:root{
  --bg:#0B0B0C; --bg2:#121214; --card:#17171A; --line:#26262B;
  --text:#F4F4F5; --muted:#A1A1AA; --dim:#71717A;
  --y:#FFD600; --y2:#FFE14D; --err:#F87171;
  --r:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
b{font-weight:700;color:var(--text)}
.wrap{width:100%;max-width:1080px;margin:0 auto;padding:0 20px}
.narrow{max-width:720px}
.center{text-align:center}
.y{color:var(--y)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;opacity:0}

/* top bar */
.topbar{position:sticky;top:0;z-index:10;background:rgba(11,11,12,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;height:52px;font-size:14px}
.handle{font-weight:800;letter-spacing:-.01em}
.live{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-weight:600}
.live b{color:var(--y)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--y);box-shadow:0 0 0 0 rgba(255,214,0,.6);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,214,0,.55)}70%{box-shadow:0 0 0 9px rgba(255,214,0,0)}100%{box-shadow:0 0 0 0 rgba(255,214,0,0)}}

/* hero */
.hero{padding:16px 0 36px}
.hero-grid{display:grid;gap:20px}
.hero-photo{position:relative;border-radius:var(--r);overflow:hidden;aspect-ratio:16/11;background:var(--card)}
.hero-photo img{width:100%;height:100%;object-fit:cover;object-position:50% 38%}
.hero-photo::after{content:"";position:absolute;inset:auto 0 0 0;height:45%;background:linear-gradient(transparent,rgba(11,11,12,.92))}
.hero-photo figcaption{position:absolute;left:14px;bottom:14px;z-index:2;font-weight:800;font-size:20px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.tag{font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;background:#fff;color:#000;padding:4px 8px;border-radius:6px}
.tag-y{background:var(--y)}
.arrow{color:var(--y)}
.eyebrow{font-size:13px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--y);margin-bottom:10px}
h1{font-size:clamp(34px,9vw,58px);line-height:1.02;font-weight:900;letter-spacing:-.035em;margin-bottom:16px}
h2{font-size:clamp(26px,6.4vw,38px);line-height:1.08;font-weight:900;letter-spacing:-.03em;margin-bottom:18px}
.sub{color:var(--muted);font-size:18px;margin-bottom:22px}

/* form */
.signup{display:grid;gap:10px;max-width:460px}
.center .signup{margin:0 auto}
.signup input{width:100%;font:inherit;font-size:17px;color:var(--text);background:var(--card);border:1.5px solid var(--line);border-radius:12px;padding:15px 16px;outline:none;transition:border-color .15s}
.signup input::placeholder{color:var(--dim)}
.signup input:focus{border-color:var(--y)}
.signup input.bad{border-color:var(--err)}
.signup button{font:inherit;font-size:18px;font-weight:800;letter-spacing:-.01em;color:#000;background:var(--y);border:0;border-radius:12px;padding:17px 18px;cursor:pointer;transition:transform .08s,background .15s;display:inline-block;text-align:center}
.signup button:hover{background:var(--y2)}
.signup button:active{transform:scale(.985)}
.signup button[disabled]{opacity:.65;cursor:wait}
.fine{font-size:13.5px;color:var(--dim)}
.fine.err{color:var(--err)}

/* stats */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg2)}
.stat-row{display:grid;grid-template-columns:repeat(2,1fr)}
.stat{padding:20px 6px;text-align:center;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat:nth-child(2n){border-right:0}
.stat:nth-child(n+3){border-bottom:0}
.stat b{display:block;font-size:28px;font-weight:900;letter-spacing:-.03em;color:var(--y)}
.stat span{font-size:13px;color:var(--muted);font-weight:600}

/* blocks */
.block{padding:56px 0}
.block.alt{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.checks{list-style:none;display:grid;gap:14px}
.checks li{position:relative;padding:16px 16px 16px 52px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);color:var(--muted)}
.checks li::before{content:"";position:absolute;left:16px;top:18px;width:22px;height:22px;border-radius:50%;background:var(--y) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center/14px no-repeat}
.about{display:grid;gap:22px;color:var(--muted)}
.creds{list-style:none;display:grid;gap:10px}
.creds li{padding:13px 16px;border-left:3px solid var(--y);background:var(--card);border-radius:0 10px 10px 0;color:var(--text);font-weight:600;font-size:16px}
.final h2{margin-bottom:24px}

/* footer */
.foot{padding:34px 0 48px;color:var(--dim);font-size:13px}
.foot p+p{margin-top:8px;max-width:620px}

@media (min-width:860px){
  .hero{padding:48px 0 64px}
  .hero-grid{grid-template-columns:.92fr 1.08fr;gap:56px;align-items:center}
  .hero-photo{aspect-ratio:4/5}
  .stat-row{grid-template-columns:repeat(4,1fr)}
  .stat{border-bottom:0}
  .stat:nth-child(2n){border-right:1px solid var(--line)}
  .stat:last-child{border-right:0}
  .block{padding:88px 0}
}
@media (prefers-reduced-motion:reduce){.dot{animation:none}}

/* ---------- sheet page ---------- */
.sheet-hero{padding:36px 0 8px}
.sheet h3{font-size:22px;font-weight:900;letter-spacing:-.02em;margin:0 0 12px}
.sheet section{margin:0 0 40px}
.rules{counter-reset:r;list-style:none;display:grid;gap:12px}
.rules li{counter-increment:r;position:relative;padding:16px 16px 16px 58px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);color:var(--muted)}
.rules li::before{content:counter(r);position:absolute;left:16px;top:14px;width:28px;height:28px;border-radius:8px;background:var(--y);color:#000;font-weight:900;display:grid;place-items:center;font-size:15px}
.quote{display:block;margin-top:6px;font-size:14px;color:var(--dim);font-style:italic}
.schemes{display:grid;gap:12px}
.scheme{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px}
.scheme-top{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:6px}
.scheme-name{font-weight:900;font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--y)}
.scheme-sets{font-weight:900;font-size:30px;letter-spacing:-.03em}
.scheme p{color:var(--muted);font-size:15.5px}
.scheme .ex{margin-top:8px;font-size:14px;color:var(--dim)}
.rot{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.rot span{font-weight:800;font-size:14px;padding:8px 12px;border-radius:999px;border:1.5px solid var(--line);background:var(--card)}
.rot span.h{border-color:var(--y);color:var(--y)}
.menu{display:grid;gap:12px}
.menu div{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px}
.menu h4{font-size:15px;font-weight:800;margin-bottom:6px}
.menu p{font-size:15px;color:var(--muted)}
.note{border:1.5px dashed var(--line);border-radius:var(--r);padding:16px;color:var(--muted);font-size:15px}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 6px}
.btn{display:inline-block;text-align:center;font-weight:800;font-size:16px;padding:13px 18px;border-radius:12px;text-decoration:none;border:0;cursor:pointer;font-family:inherit}
.btn-y{background:var(--y);color:#000}
.btn-ghost{background:transparent;color:var(--text);border:1.5px solid var(--line)}
@media (min-width:760px){.schemes{grid-template-columns:repeat(3,1fr)}.menu{grid-template-columns:1fr 1fr}}
@media print{
  :root{--bg:#fff;--bg2:#fff;--card:#fff;--line:#ccc;--text:#111;--muted:#333;--dim:#555;--y:#111}
  .topbar,.actions,.foot,.no-print{display:none!important}
  body{font-size:12.5px}
  .rules li::before{background:#111;color:#fff}
  .scheme,.rules li,.menu div{break-inside:avoid}
}

/* ---------- anatomy + bank ---------- */
.anat-fig{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px;margin:6px 0 16px;text-align:center}
.anat-fig svg{width:100%;max-width:360px;height:auto;margin:0 auto;display:block}
.anat-fig figcaption{font-size:12.5px;color:var(--dim);margin-top:6px}
.mcards{display:grid;gap:12px}
.mcard{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px 16px 14px}
.mcard h4{font-size:17px;font-weight:900;letter-spacing:-.01em;margin:0 0 8px;padding-left:22px}
.mcard .sw{position:absolute;left:16px;top:21px;width:14px;height:14px;border-radius:4px}
.mcard p{font-size:15px;color:var(--muted);margin-top:4px}
.mcard .ex{color:var(--dim);font-size:14px;margin-top:8px}
.bank{display:grid;gap:10px}
.bank-head{display:none!important}
.bank-row{display:grid;grid-template-columns:1fr auto;gap:4px 12px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:13px 14px;font-size:15px;color:var(--muted)}
.bank-row span:nth-child(1){color:var(--text)}
.bank-row span:nth-child(2){grid-column:1/2;font-weight:700;color:var(--text);font-size:14px}
.bank-row span:nth-child(3){grid-column:1/-1;font-size:14px}
.bank-row span:nth-child(4){grid-column:2/3;grid-row:1/3;align-self:center;font-weight:900;color:var(--y);font-size:16px;white-space:nowrap}
.dot-c{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:4px;vertical-align:0}
.dot-c+.dot-c{margin-left:-2px}
.dot-c:last-of-type{margin-right:7px}
.fiber{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px;display:grid;gap:12px}
.fiber-row{display:grid;grid-template-columns:1fr;gap:5px}
.fn{font-weight:800;font-size:15px}
.bar{height:12px;border-radius:99px;background:#2E2E34;overflow:hidden;display:block}
.bar i{display:block;height:100%;background:var(--y);border-radius:99px}
.bar-na{background:repeating-linear-gradient(45deg,#26262b 0 6px,#1b1b1f 6px 12px)}
.fv{font-size:13.5px;color:var(--muted)}
.legend{font-size:12.5px;color:var(--dim);margin-top:2px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;background:var(--y);margin-right:4px;vertical-align:-1px}
.cite{color:var(--dim);font-size:13px;white-space:nowrap}
.srcs ol{padding-left:20px;color:var(--dim);font-size:13px;display:grid;gap:6px}
@media (min-width:760px){
  .mcards{grid-template-columns:1fr 1fr}
  .bank-head{display:grid!important;background:transparent;border:0;padding:0 14px;font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--dim)}
  .bank-row{grid-template-columns:1.25fr 1.1fr 1.6fr 70px;align-items:center}
  .bank-row span:nth-child(n){grid-column:auto;grid-row:auto}
  .fiber-row{grid-template-columns:150px 1fr 190px;align-items:center}
}
@media print{
  .anat-fig{border:1px solid #ccc}
  .bar{background:#ddd}.bar i{background:#111}
  .mcard,.bank-row,.fiber{break-inside:avoid}
  .anat-fig svg path[fill="#1d1d21"]{fill:#f2f2f2}
  .anat-fig svg text{fill:#111}
}
@media print{
  h1{font-size:30px} h3{font-size:17px;break-after:avoid;page-break-after:avoid;margin-bottom:8px}
  .sheet section{margin:0 0 20px}
  .sub{font-size:12.5px!important;margin-bottom:10px}
  .rules{gap:6px}.rules li{padding:9px 10px 9px 44px}.rules li::before{left:10px;top:9px;width:22px;height:22px;font-size:12px}
  .schemes{grid-template-columns:repeat(3,1fr);gap:8px}.scheme{padding:10px}.scheme-sets{font-size:20px}
  .menu{grid-template-columns:1fr 1fr;gap:8px}.menu div{padding:10px}
  .anat-fig{float:left;width:42%;margin:0 14px 8px 0;padding:8px}
  .mcards{grid-template-columns:1fr;gap:6px}.mcard{padding:9px 10px}.mcard p{font-size:11.5px;margin-top:2px}
  .anat{overflow:hidden}
  .bank{gap:4px}.bank-head{display:grid!important;padding:0 10px;font-size:10px;font-weight:800;text-transform:uppercase;color:#555;background:transparent;border:0}
  .bank-row{grid-template-columns:1.3fr 1.2fr 1.7fr 60px;align-items:center;padding:6px 10px;font-size:11.5px}
  .bank-row span:nth-child(n){grid-column:auto;grid-row:auto;font-size:11.5px}
  .fiber{gap:6px;padding:10px}.fiber-row{grid-template-columns:130px 1fr 170px;align-items:center}
  .checks{gap:6px}.checks li{padding:8px 10px 8px 40px;font-size:12px}.checks li::before{left:10px;top:9px;width:18px;height:18px;background-size:11px}
  .note{padding:10px;font-size:12px}
  .srcs ol{font-size:10.5px}
}
@media print{.pb{break-before:page;page-break-before:always}}
.live{white-space:nowrap}