:root{
  --bg:#0a0b0f; --bg2:#11131a; --card:#161922; --card2:#1c2030;
  --line:#262b3a; --text:#e7e9ee; --muted:#9aa3b5; --dim:#6b7385;
  --accent:#6ee7d2; --accent2:#7aa2ff; --green:#46d18f; --red:#f47171;
  --r:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
  line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}

/* NAV */
nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(12px);
  background:rgba(10,11,15,.72);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:28px;height:60px}
.logo{font-weight:700;font-size:18px;letter-spacing:-.3px;display:flex;align-items:center;gap:9px;text-decoration:none}
.logo .dot{width:11px;height:11px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,var(--accent),var(--accent2));box-shadow:0 0 14px var(--accent)}
.logo-img{width:28px;height:28px;object-fit:contain;display:block}
.nav-links{display:flex;gap:22px;margin-left:auto;font-size:14px;color:var(--muted);align-items:center}
.nav-links a{text-decoration:none;transition:color .15s}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-links a.cta-link{background:var(--accent);color:#04140f;padding:8px 14px;border-radius:9px;font-weight:600}

/* BUTTONS */
.btn{padding:13px 22px;border-radius:11px;font-weight:600;font-size:15px;text-decoration:none;
  border:1px solid transparent;cursor:pointer;transition:transform .12s,background .15s;display:inline-block}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:linear-gradient(180deg,var(--accent),#41b9a3);color:#04140f}
.btn-ghost{background:var(--card2);border-color:var(--line);color:var(--text)}

.eyebrow{color:var(--accent);font-size:12px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase}
.proto-badge{display:inline-block;font-size:12px;color:var(--accent2);
  background:rgba(122,162,255,.1);border:1px solid rgba(122,162,255,.25);padding:6px 13px;border-radius:999px}

/* ===== LANDING ===== */
.hero{position:relative;padding:96px 0 70px;text-align:center;overflow:hidden}
.hero-lg{padding:150px 0 36px}
/* "Bittensor in 30 seconds" emerges from the dark with a soft glow seam */
#learn30{scroll-margin-top:96px;padding-top:34px;position:relative;overflow:hidden}
#learn30::after{content:"";position:absolute;inset:0 0 auto 0;height:420px;z-index:0;pointer-events:none;
  background:radial-gradient(58% 70% at 50% -6%,rgba(110,231,210,.13),rgba(122,162,255,.06) 45%,transparent 72%)}
#learn30 .wrap{position:relative;z-index:1}
#learn30 .eyebrow{font-size:17px;letter-spacing:2px}
#learn30 .sec-head h2{font-size:clamp(22px,3vw,28px)}
.hero-cue{display:inline-block;margin-top:30px;color:var(--dim);font-size:26px;text-decoration:none;
  animation:cueBounce 1.9s ease-in-out infinite;transition:color .15s}
.hero-cue:hover{color:var(--text)}
@keyframes cueBounce{0%,100%{transform:translateY(0)}50%{transform:translateY(8px)}}
.hero::before{content:"";position:absolute;inset:-40% 0 auto 0;height:620px;z-index:0;
  background:radial-gradient(60% 50% at 50% 0,rgba(122,162,255,.20),transparent 70%),
             radial-gradient(50% 40% at 72% 8%,rgba(110,231,210,.16),transparent 70%);
  animation:drift 14s ease-in-out infinite alternate}
@keyframes drift{from{transform:translateX(-3%) scale(1)}to{transform:translateX(3%) scale(1.06)}}
.hero>*{position:relative;z-index:1}
.hero h1{font-size:clamp(36px,6vw,62px);line-height:1.04;letter-spacing:-1.8px;margin:18px 0 10px;
  font-weight:800;background:linear-gradient(180deg,#fff,#b9c0d4);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .tagline{font-size:clamp(15px,2vw,19px);color:var(--accent);font-weight:600;letter-spacing:.2px;margin:0 0 6px}
.hero p.sub{font-size:clamp(16px,2.2vw,20px);color:var(--muted);max-width:600px;margin:14px auto 32px}
.cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* scroll reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

section{padding:60px 0;position:relative}
.sec-head{margin-bottom:30px;text-align:center}
.sec-head h2{font-size:clamp(26px,3.6vw,34px);letter-spacing:-.8px;margin:8px 0 8px;font-weight:750}
.sec-head p{color:var(--muted);margin:0 auto;max-width:600px}

/* 30-sec diagram */
.diagram{display:grid;grid-template-columns:1fr auto 1fr;gap:24px;align-items:center;max-width:940px;margin:0 auto;
  background:var(--card);border:1px solid var(--line);border-radius:22px;padding:46px 44px}
@media(max-width:720px){.diagram{grid-template-columns:1fr;text-align:center;gap:14px}
  .darrow svg{transform:rotate(90deg);width:54px;height:auto}
  .darrow{margin-top:10px}}
.dnode{text-align:center}
.dnode .ic{font-size:42px}
.dnode h4{margin:14px 0 7px;font-size:20px}
.dnode p{margin:0;font-size:15.5px;line-height:1.5;color:var(--muted)}
.dnode.btc{opacity:.62}
.darrow{display:flex;align-items:center;justify-content:center}
.darrow svg{overflow:visible}
.darrow .flow{stroke-dasharray:5 7;animation:dash 1.1s linear infinite}
@keyframes dash{to{stroke-dashoffset:-24}}
.dcaption{text-align:center;color:var(--muted);max-width:760px;margin:26px auto 0;font-size:19px;line-height:1.5}
.dcaption b{color:var(--text)}

/* category teaser */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.cat-tile{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;
  text-decoration:none;display:block;transition:transform .15s,border-color .15s,background .15s}
.cat-tile:hover{transform:translateY(-4px);border-color:var(--accent2);background:var(--card2)}
.cat-tile .emoji{font-size:26px}
.cat-tile h3{margin:12px 0 4px;font-size:17px;letter-spacing:-.3px}
.cat-tile p{margin:0 0 12px;font-size:13px;color:var(--muted)}
.cat-tile .count{font-size:12px;color:var(--accent);font-weight:600}
.cat-cta{text-align:center;margin-top:26px}

/* stat band */
.stat-band{display:flex;gap:40px;justify-content:center;flex-wrap:wrap;
  background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:42px 0}
.stat-band .item{text-align:center}
.stat-band b{display:block;font-size:34px;font-weight:800;letter-spacing:-1px;
  background:linear-gradient(180deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-band span{font-size:13px;color:var(--muted)}

/* ===== DIRECTORY ===== */
.controls{display:flex;flex-direction:column;gap:14px;margin-bottom:22px}
.search-sort{display:flex;gap:12px;flex-wrap:wrap}
.search{flex:1;min-width:220px;position:relative}
.search input{width:100%;padding:12px 14px 12px 40px;border-radius:11px;border:1px solid var(--line);
  background:var(--card);color:var(--text);font-size:14px;outline:none}
.search input:focus{border-color:var(--accent2)}
.search svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);opacity:.5}
select{padding:12px 14px;border-radius:11px;border:1px solid var(--line);background:var(--card);
  color:var(--text);font-size:14px;outline:none;cursor:pointer}
.chips{display:flex;gap:9px;flex-wrap:wrap}
.chip{padding:7px 14px;border-radius:999px;border:1px solid var(--line);background:var(--card);
  color:var(--muted);font-size:13px;font-weight:500;cursor:pointer;transition:all .14s;white-space:nowrap}
.chip:hover{color:var(--text);border-color:var(--dim)}
.chip.active{background:var(--accent);color:#04140f;border-color:var(--accent);font-weight:600}

.list{display:flex;flex-direction:column;gap:11px}
.row{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:border-color .15s}
a.row{display:block;text-decoration:none;color:inherit}
.row:hover{border-color:var(--accent2)}
.row:hover .chev{opacity:1;transform:translateX(3px)}
.row.open{border-color:var(--accent2)}
.row-head{display:flex;align-items:center;gap:16px;padding:15px 22px;cursor:pointer}
.sn-id{font-size:12px;font-weight:700;color:var(--accent);background:rgba(110,231,210,.1);
  padding:4px 8px;border-radius:7px;min-width:48px;text-align:center}
.sn-main{flex:1;min-width:0}
.sn-name{font-weight:650;font-size:20px;display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.sn-cat{font-size:11px;font-weight:600;padding:3px 9px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
.sn-one{color:#bdc4d4;font-size:17.5px;line-height:1.45;margin-top:4px}
.sn-stats{display:flex;gap:26px;align-items:center;text-align:right}
.stat .v{font-weight:650;font-size:15px}
.stat .l{font-size:10.5px;color:var(--dim);text-transform:uppercase;letter-spacing:.5px}
.up{color:var(--green)} .down{color:var(--red)}
.chev{transition:transform .2s;opacity:.6;flex-shrink:0}
.row.open .chev{transform:rotate(180deg)}
@media(max-width:720px){
  /* stack the row: name/category/description full width, chevron on the title line, slim stats below */
  .row-head{flex-wrap:wrap;row-gap:10px;align-items:flex-start}
  .sn-id{order:1;align-self:flex-start}
  .sn-main{order:2;flex:1 1 60%;min-width:0}
  .chev{order:3;margin-left:auto;align-self:flex-start;margin-top:2px}
  .sn-stats{order:4;flex-basis:100%;justify-content:flex-start;text-align:left;gap:20px;padding-top:6px}
  .sn-stats .stat .v{font-size:12.5px}
  .sn-stats .stat .l{font-size:9px}
  .sn-cat{white-space:nowrap}
  .sn-name{font-size:17px}
  .sn-one{font-size:15.5px;line-height:1.5;margin-top:6px}
}

.row-body{display:none;padding:4px 18px 20px;border-top:1px solid var(--line)}
.row.open .row-body{display:block}
.body-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:26px;padding-top:18px}
@media(max-width:720px){ .body-grid{grid-template-columns:1fr} }
.body-grid p{margin:0 0 12px;font-size:14.5px;color:#cfd4e0}
.commodity{display:inline-block;font-size:12px;color:var(--accent);background:rgba(110,231,210,.08);
  border:1px solid rgba(110,231,210,.2);padding:5px 11px;border-radius:8px;margin-bottom:14px}
.links{display:flex;gap:9px;flex-wrap:wrap;margin-top:6px}
.links a{font-size:12.5px;padding:6px 12px;border-radius:8px;background:var(--card2);border:1px solid var(--line);
  text-decoration:none;color:var(--muted);transition:all .14s}
.links a:hover{color:var(--text);border-color:var(--dim)}
.market-box{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px}
.market-box h4{margin:0 0 14px;font-size:12px;text-transform:uppercase;letter-spacing:1px;color:var(--dim)}
.mkt-line{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--line);font-size:13.5px}
.mkt-line:last-child{border-bottom:none}
.mkt-line .lbl{color:var(--muted)}
.mkt-line .val{font-weight:600}
.spark{margin-top:14px;height:46px}

.page-head{padding-top:46px;padding-bottom:10px}
.page-head h1{font-size:34px;letter-spacing:-1px;margin:0 0 8px}
.page-head p{color:var(--muted);margin:0;max-width:680px}

/* ===== LEARN (scrollytelling) ===== */
.learn-rail{position:fixed;left:max(18px,calc(50vw - 560px));top:50%;transform:translateY(-50%);
  z-index:40;display:flex;flex-direction:column;gap:14px}
@media(max-width:980px){.learn-rail{display:none}}
.learn-rail a{width:34px;height:34px;border-radius:50%;border:1px solid var(--line);background:var(--card);
  color:var(--dim);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
  text-decoration:none;transition:all .25s}
.learn-rail a.active{background:var(--accent);color:#04140f;border-color:var(--accent);transform:scale(1.12);
  box-shadow:0 0 18px rgba(110,231,210,.5)}

.lm{display:flex;align-items:center;gap:60px;padding:80px 0;scroll-margin-top:70px}
.lm + .lm{border-top:1px solid var(--line)}
.lm.rev{flex-direction:row-reverse}
@media(max-width:760px){.lm{flex-direction:column !important;min-height:auto;gap:24px;text-align:center;padding:48px 0;
  border-bottom:1px solid var(--line)}}

.lm-visual{flex:0 0 300px;display:flex;align-items:center;justify-content:center;position:relative}
.orb{width:200px;height:200px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:78px;position:relative;
  background:radial-gradient(circle at 32% 28%,rgba(110,231,210,.22),rgba(122,162,255,.10) 55%,transparent 72%);
  border:1px solid var(--line);animation:float 6s ease-in-out infinite}
.orb::before{content:"";position:absolute;inset:-28px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,162,255,.16),transparent 68%);filter:blur(8px);z-index:-1}
.orb .orb-num{position:absolute;top:-10px;right:-6px;font-size:15px;font-weight:800;color:#04140f;
  background:var(--accent);width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 16px rgba(110,231,210,.45)}
@keyframes float{0%,100%{transform:translateY(-8px)}50%{transform:translateY(8px)}}

.lm-text{flex:1;max-width:520px}
.lm-kicker{color:var(--accent);font-size:12px;font-weight:700;letter-spacing:2px;text-transform:uppercase}
.lm-text h2{font-size:clamp(28px,4vw,40px);letter-spacing:-1px;margin:10px 0 18px;font-weight:780;line-height:1.05}
.lm-summary{font-size:clamp(18px,2.4vw,23px);line-height:1.4;color:#eef1f6;margin:0 0 16px;font-weight:500}
.lm-body{font-size:15.5px;color:var(--muted);margin:0}
.lm-highlight{margin-top:22px;display:inline-block;font-size:14px;font-weight:600;color:var(--accent);
  background:rgba(110,231,210,.08);border:1px solid rgba(110,231,210,.25);padding:10px 16px;border-radius:11px}

/* directional reveal */
.lm .lm-text,.lm .lm-visual{opacity:0;transition:opacity .8s ease,transform .8s ease}
.lm .lm-text{transform:translateX(30px)} .lm.rev .lm-text{transform:translateX(-30px)}
.lm .lm-visual{transform:scale(.85)}
.lm.in .lm-text,.lm.in .lm-visual{opacity:1;transform:none}

/* ===== per-module learn animations ===== */
.viz{display:flex;align-items:center;justify-content:center}
@keyframes pulseGlow{0%,100%{box-shadow:0 0 16px rgba(110,231,210,.25)}50%{box-shadow:0 0 34px rgba(110,231,210,.55)}}

/* 01 — the big idea (Bitcoin → Bittensor, reused from the landing diagram) */
.viz-idea{gap:12px}
.viz-idea .vnode{width:78px;height:78px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:38px;
  border:1px solid var(--line);background:radial-gradient(circle at 32% 28%,rgba(122,162,255,.16),transparent 72%)}
.viz-idea .vnode.dim{opacity:.5}
.viz-idea .vnode.glow{border-color:rgba(110,231,210,.4);animation:pulseGlow 3s ease-in-out infinite}

/* 02 — TAO coin + halving steps */
.viz-coin{flex-direction:column;gap:20px}
.viz-coin .coin{width:104px;height:104px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:44px;font-weight:700;color:var(--accent);border:1px solid rgba(110,231,210,.35);
  background:radial-gradient(circle at 34% 30%,rgba(110,231,210,.28),rgba(122,162,255,.08) 60%,transparent 76%);
  animation:coinPulse 3.4s ease-in-out infinite}
@keyframes coinPulse{0%,100%{box-shadow:0 0 0 0 rgba(110,231,210,.4);transform:scale(1)}50%{box-shadow:0 0 0 16px rgba(110,231,210,0);transform:scale(1.05)}}
.viz-coin .halve{display:flex;align-items:flex-end;gap:8px;height:64px}
.viz-coin .halve i{width:16px;height:var(--h);border-radius:4px 4px 0 0;transform-origin:bottom;
  background:linear-gradient(180deg,var(--accent2),rgba(122,162,255,.2));animation:halveRise 2.8s ease-in-out infinite}
.viz-coin .halve i:nth-child(2){animation-delay:.18s}.viz-coin .halve i:nth-child(3){animation-delay:.36s}
.viz-coin .halve i:nth-child(4){animation-delay:.54s}.viz-coin .halve i:nth-child(5){animation-delay:.72s}
@keyframes halveRise{0%,100%{transform:scaleY(.78);opacity:.7}50%{transform:scaleY(1);opacity:1}}

/* 03 — subnet network branching out */
.viz-net{width:210px;height:210px}
.viz-net line{stroke:var(--line);stroke-width:1.4}
.viz-net .hub{fill:var(--accent);filter:drop-shadow(0 0 7px rgba(110,231,210,.7))}
.viz-net .leaf{fill:#1b1f2c;stroke:var(--accent2);stroke-width:1.6;animation:leafPulse 2.6s ease-in-out infinite}
@keyframes leafPulse{0%,100%{fill:#1b1f2c}50%{fill:var(--accent2)}}

/* 04 — market voting via growing bars */
.viz-bars{align-items:flex-end;gap:10px;height:150px}
.viz-bars .bar{width:20px;height:var(--h);border-radius:5px 5px 0 0;transform-origin:bottom;
  background:linear-gradient(180deg,rgba(122,162,255,.55),rgba(122,162,255,.12));animation:barLive 2.6s ease-in-out infinite}
.viz-bars .bar.win{background:linear-gradient(180deg,var(--accent),rgba(110,231,210,.18));box-shadow:0 0 20px rgba(110,231,210,.4)}
@keyframes barLive{0%,100%{transform:scaleY(.72)}50%{transform:scaleY(1)}}

/* 05 — miner → validator → reward loop */
.viz-loop{position:relative;width:100%;max-width:260px;display:flex;align-items:center;justify-content:space-between;padding:0 6px 20px}
.viz-loop::before{content:"";position:absolute;left:34px;right:34px;top:31px;height:2px;
  background:repeating-linear-gradient(90deg,var(--accent2) 0 5px,transparent 5px 12px);opacity:.45}
.viz-loop .lnode{position:relative;z-index:2;width:62px;height:62px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:25px;border:1px solid var(--line);background:var(--card2)}
.viz-loop .lnode span{position:absolute;bottom:-17px;font-size:9.5px;color:var(--muted);white-space:nowrap}
.viz-loop .lnode.glow{border-color:rgba(110,231,210,.4);color:var(--accent);font-weight:700;animation:pulseGlow 3s ease-in-out infinite}
.viz-loop .travel{position:absolute;top:25px;left:34px;width:12px;height:12px;border-radius:50%;z-index:3;
  background:var(--accent);box-shadow:0 0 12px var(--accent);animation:travel 2.8s cubic-bezier(.5,0,.5,1) infinite}
@keyframes travel{0%{left:34px}100%{left:calc(100% - 46px)}}

/* 06 — volatility line */
.viz-vol{position:relative;width:230px;height:120px}
.viz-vol .vline{fill:none;stroke:var(--red);stroke-width:2.5;stroke-linejoin:round;stroke-linecap:round;
  stroke-dasharray:900;stroke-dashoffset:900;animation:draw 3.4s ease-in-out infinite}
@keyframes draw{0%{stroke-dashoffset:900}60%{stroke-dashoffset:0}100%{stroke-dashoffset:0;opacity:.85}}
.viz-vol .warn{position:absolute;top:2px;right:4px;font-size:22px;animation:warnPulse 1.6s ease-in-out infinite}
@keyframes warnPulse{0%,100%{opacity:.4;transform:scale(.9)}50%{opacity:1;transform:scale(1.1)}}

/* ===== SUBNET PAGE ===== */
.sp-hero{padding:30px 0 6px}
.sp-back{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);text-decoration:none;margin-bottom:22px;transition:color .14s}
.sp-back:hover{color:var(--text)}
.sp-badge{font-size:13px;font-weight:700;color:var(--accent);background:rgba(110,231,210,.1);padding:5px 11px;border-radius:8px}
.sp-title{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:16px 0 12px}
.sp-title h1{font-size:clamp(30px,5vw,42px);letter-spacing:-1.2px;margin:0;line-height:1.05}
.sp-lead{font-size:clamp(16px,2.2vw,19px);line-height:1.5;color:var(--text);max-width:760px;margin:0}
.sp-pricestrip{display:flex;gap:34px;flex-wrap:wrap;margin:24px 0 4px;padding:16px 22px;background:var(--bg2);border:1px solid var(--line);border-radius:12px}
.sp-pricestrip .ps{display:flex;flex-direction:column}
.sp-pricestrip .pv{font-size:21px;font-weight:700}
.sp-pricestrip .pl{font-size:11px;text-transform:uppercase;letter-spacing:.6px;color:var(--dim);margin-top:3px}
@media(max-width:600px){
  /* compact the price box on phones: all four stats on one row, smaller */
  .sp-pricestrip{gap:12px;padding:12px 14px;flex-wrap:nowrap}
  .sp-pricestrip .ps{flex:1;min-width:0}
  .sp-pricestrip .pv{font-size:15px}
  .sp-pricestrip .pl{font-size:9px;white-space:nowrap}
}
/* tighten the gap between the price box and the content to ~60px total */
.sp-hero + section{padding-top:40px}
.sp-grid{display:grid;grid-template-columns:1.7fr 1fr;gap:36px;padding:10px 0 6px;align-items:start}
@media(max-width:760px){.sp-grid{grid-template-columns:1fr}}
.sp-grid h2{font-size:13px;text-transform:uppercase;letter-spacing:1px;color:var(--dim);margin:0 0 14px}
.sp-body p{font-size:16px;line-height:1.75;color:#cfd4e0;margin:0 0 16px}
.sp-body .links{margin-top:0}
.sp-prevnext{display:flex;justify-content:space-between;gap:14px;margin:30px 0 6px;border-top:1px solid var(--line);padding-top:22px}
.sp-prevnext a,.sp-prevnext span.empty{flex:1;min-width:0;text-decoration:none;color:var(--muted);font-size:13px;font-weight:600;padding:14px 16px;border:1px solid var(--line);border-radius:10px;transition:all .14s;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sp-prevnext a:hover{color:var(--text);border-color:var(--accent2)}
.sp-prevnext .nx{text-align:right}
.sp-prevnext .dir{display:block;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.6px;color:var(--dim);margin-bottom:5px}
.sp-prevnext span.empty{border:none}

footer{border-top:1px solid var(--line);padding:38px 0;color:var(--dim);font-size:13px;text-align:center;margin-top:40px}
.disclaimer{max-width:680px;margin:0 auto 14px;line-height:1.5}
.x-social{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;margin-top:6px;
  border-radius:11px;border:1px solid var(--line);color:var(--muted);transition:color .15s,border-color .15s,background .15s}
.x-social:hover{color:var(--text);border-color:var(--accent2);background:var(--card2)}
.x-social svg{width:20px;height:20px}

/* ===== MOBILE (phones) ===== */
@media(max-width:600px){
  /* nav: drop the redundant CTA pill so Subnets/Learn fit — without shrinking nav text */
  .nav-inner{gap:16px;height:54px}
  .nav-links{gap:18px}
  .nav-links a.cta-link{display:none}
  /* hero: smaller headings, far less dead space */
  .hero{padding:48px 0 40px}
  .hero-lg{padding:56px 0 40px}
  .hero h1{font-size:clamp(25px,7.6vw,34px);letter-spacing:-1px}
  .hero p.sub{font-size:16px;margin-top:12px}
  .hero-cue{margin-top:28px}
  .cta{gap:10px}
  .cta .btn{padding:12px 18px;font-size:14.5px}
  /* sections + headings */
  section{padding:44px 0}
  .sec-head h2{font-size:clamp(21px,5.6vw,28px)}
  #learn30 .eyebrow{font-size:14px}
  /* 30-sec diagram: tighter padding (already stacks at 720) */
  .diagram{padding:30px 20px}
  .dcaption{font-size:16px;margin-top:20px}
  /* learn modules: smaller orb + heading so nothing clips */
  .orb{width:150px;height:150px;font-size:60px}
  .lm-visual{flex-basis:auto}
  .lm-text h2{font-size:clamp(24px,6.4vw,32px)}
  .lm-summary{font-size:18px}
}