/* ===== ethmixer.org — ETH-toned dark theme ===== */
:root{
  --bg:#0B0E1A; --bg-2:#0E1222; --panel:#12172B; --panel-2:#161C33;
  --line:#232B47; --line-2:#2C355A;
  --eth:#627EEA; --eth-light:#92A2F4; --eth-dk:#3C4780;
  --silver:#C9CEDC; --text:#E7EAF3; --muted:#9AA3BE;
  --good:#5FD0A6; --warn:#E0B15A;
  --maxw:1120px; --r:16px;
  --shadow:0 24px 60px -30px rgba(0,0,0,.8);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:"Inter",system-ui,-apple-system,sans-serif;
  font-size:17px; line-height:1.65; -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(900px 500px at 82% -8%, rgba(98,126,234,.16), transparent 60%),
    radial-gradient(700px 500px at -10% 20%, rgba(60,71,128,.14), transparent 60%);
  background-attachment:fixed;
}
.wrap{max-width:var(--maxw); margin-inline:auto; padding-inline:24px}
.narrow{max-width:760px}
h1,h2,h3{font-family:"Space Grotesk",sans-serif; line-height:1.12; letter-spacing:-.02em; margin:0}
h1{font-size:clamp(2.6rem,7vw,4.6rem); font-weight:700}
h2{font-size:clamp(1.7rem,3.6vw,2.5rem); font-weight:600; margin-bottom:.6em}
h3{font-size:1.18rem; font-weight:600; margin-bottom:.35em}
p{margin:0 0 1em} a{color:inherit}
strong{color:#fff; font-weight:600}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:absolute;left:-999px;top:0;background:var(--eth);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip:focus{left:0}
:focus-visible{outline:2px solid var(--eth-light); outline-offset:3px; border-radius:6px}

/* ---------- NAV ---------- */
.nav{position:sticky;top:0;z-index:100;background:rgba(11,14,26,.72);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-family:"Space Grotesk",sans-serif;font-weight:600;font-size:1.12rem;text-decoration:none;letter-spacing:-.01em}
.brand .dot{color:var(--eth-light)}
.brand-mark{filter:drop-shadow(0 3px 8px rgba(98,126,234,.5))}
.menu{display:flex;gap:30px}
.menu a{text-decoration:none;color:var(--muted);font-size:.96rem;font-weight:500;position:relative;transition:color .2s}
.menu a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--eth);transition:width .25s}
.menu a:hover,.menu a.active{color:var(--text)}
.menu a:hover::after,.menu a.active::after{width:100%}
.burger{display:none;background:none;border:0;cursor:pointer;width:40px;height:40px;flex-direction:column;justify-content:center;gap:5px;padding:8px}
.burger span{height:2px;background:var(--text);border-radius:2px;transition:.3s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- HERO ---------- */
.hero{padding:clamp(48px,8vw,96px) 0 clamp(40px,6vw,72px)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.eyebrow{font-family:"IBM Plex Mono",monospace;font-size:.8rem;letter-spacing:.22em;text-transform:uppercase;color:var(--eth-light);margin-bottom:1.2em}
.eyebrow::before{content:"◇ "}
.hero h1{background:linear-gradient(180deg,#fff 30%,var(--eth-light));-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:.35em}
.lede{font-size:1.16rem;color:var(--silver);max-width:38ch;margin-bottom:1.8em}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:2.4em}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 24px;border-radius:12px;text-decoration:none;font-weight:600;font-size:.98rem;transition:transform .18s,box-shadow .25s,background .2s;border:1px solid transparent}
.btn-primary{background:linear-gradient(135deg,var(--eth),var(--eth-dk));color:#fff;box-shadow:0 12px 30px -12px rgba(98,126,234,.8)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px -14px rgba(98,126,234,.9)}
.btn-ghost{border-color:var(--line-2);color:var(--text)}
.btn-ghost:hover{border-color:var(--eth);background:rgba(98,126,234,.08)}
.hero-stats{display:flex;gap:30px;margin:0;flex-wrap:wrap}
.hero-stats div{display:flex;flex-direction:column}
.hero-stats dt{font-family:"Space Grotesk",sans-serif;font-size:2rem;font-weight:700;color:#fff;line-height:1}
.hero-stats dd{margin:.4em 0 0;font-size:.82rem;color:var(--muted);max-width:14ch}

.hero-art{margin:0;position:relative}
.hero-art svg{width:100%;height:auto;display:block}
.hero-art figcaption{text-align:center;font-size:.8rem;color:var(--muted);margin-top:8px}
.spin{transform-origin:center;animation:spin 22s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.dot{animation:pulse 3s ease-in-out infinite}
.flow-in .d1{animation:flowIn 3s ease-in infinite}
.flow-in .d2{animation:flowIn 3s ease-in .6s infinite}
.flow-in .d3{animation:flowIn 3s ease-in 1.2s infinite}
.flow-out .o1{animation:flowOut 3s ease-out 1.6s infinite}
.flow-out .o2{animation:flowOut 3s ease-out 2.1s infinite}
@keyframes flowIn{0%{transform:translateX(0);opacity:0}20%{opacity:1}80%{transform:translateX(140px);opacity:1}100%{transform:translateX(146px);opacity:0}}
@keyframes flowOut{0%{transform:translateX(-140px);opacity:0}20%{opacity:1}100%{transform:translateX(0);opacity:0}}
@keyframes pulse{0%,100%{opacity:.6}50%{opacity:1}}

/* ---------- SECTIONS ---------- */
.sec{padding:clamp(56px,8vw,96px) 0}
.sec-alt{background:linear-gradient(180deg,var(--bg-2),var(--bg));border-block:1px solid var(--line)}
.tag{font-family:"IBM Plex Mono",monospace;font-size:.78rem;letter-spacing:.14em;color:var(--eth-light);margin-bottom:1em;text-transform:uppercase}
.narrow-p,.who p{max-width:64ch}
section p{color:var(--silver)}

/* cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:26px 24px;position:relative;overflow:hidden;transition:border-color .25s,transform .25s}
.card::before{content:"";position:absolute;inset:0 0 auto 0;height:2px;background:linear-gradient(90deg,var(--eth),transparent);opacity:.7}
.card:hover{transform:translateY(-4px);border-color:var(--line-2)}
.card h3{color:#fff}
.card p{margin:0;font-size:.98rem}

/* wide art */
.wide-art{margin:44px 0 0}
.wide-art svg{width:100%;height:auto}
.wide-art figcaption{font-size:.82rem;color:var(--muted);margin-top:10px;text-align:center}

/* table */
.table-scroll{overflow-x:auto;margin-top:32px;border:1px solid var(--line);border-radius:var(--r)}
table{width:100%;border-collapse:collapse;min-width:640px;font-size:.96rem}
caption{text-align:left}
thead th{background:var(--panel-2);text-align:left;font-family:"Space Grotesk",sans-serif;font-weight:600;color:#fff;padding:16px 18px;font-size:.9rem}
tbody th,tbody td{padding:15px 18px;border-top:1px solid var(--line);color:var(--silver)}
tbody th{font-weight:600;color:#fff;text-align:left;font-family:inherit}
tbody tr:hover{background:rgba(98,126,234,.05)}
.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:.78rem;font-weight:600}
.pill.good{background:rgba(95,208,166,.14);color:var(--good)}
.pill.warn{background:rgba(224,177,90,.15);color:var(--warn)}

/* split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px}
.who{margin-top:56px;padding-top:44px;border-top:1px solid var(--line)}

/* steps */
.steps{display:grid;grid-template-columns:1.35fr .65fr;gap:44px;align-items:start;margin-top:8px}
.steps-list{list-style:none;margin:0;padding:0;position:relative}
.steps-list::before{content:"";position:absolute;left:19px;top:20px;bottom:20px;width:2px;background:linear-gradient(var(--eth),var(--eth-dk))}
.steps-list li{display:flex;gap:20px;padding:14px 0;position:relative}
.num{flex:0 0 40px;height:40px;width:40px;border-radius:50%;background:var(--bg);border:2px solid var(--eth);color:var(--eth-light);display:grid;place-items:center;font-family:"Space Grotesk",sans-serif;font-weight:700;z-index:1}
.steps-list h3{color:#fff}
.steps-list p{margin:0;font-size:.97rem}

/* simulator */
.sim{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:26px 24px;position:sticky;top:88px}
.sim h3{color:#fff}
.sim-note{font-size:.9rem;color:var(--muted)}
.sim label{display:block;font-size:.82rem;color:var(--muted);margin:14px 0 6px;font-family:"IBM Plex Mono",monospace;letter-spacing:.06em}
.sim input{width:100%;background:var(--bg);border:1px solid var(--line-2);color:#fff;padding:11px 14px;border-radius:10px;font-size:1rem;font-family:"IBM Plex Mono",monospace}
.sim input:focus{border-color:var(--eth);outline:none}
.sim-out{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px}
.chip{font-family:"IBM Plex Mono",monospace;font-size:.82rem;background:rgba(98,126,234,.12);border:1px solid var(--eth-dk);color:var(--eth-light);padding:6px 11px;border-radius:8px}
.chip.rem{background:rgba(224,177,90,.1);border-color:var(--warn);color:var(--warn)}

/* quote */
.quote{margin:0;background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--eth);border-radius:var(--r);padding:36px 40px;max-width:840px;position:relative}
.qmark{margin-bottom:8px}
.quote blockquote{margin:0;font-family:"Space Grotesk",sans-serif;font-size:clamp(1.25rem,2.4vw,1.7rem);line-height:1.4;color:#fff;letter-spacing:-.01em}
.quote figcaption{margin-top:18px;color:var(--eth-light);font-size:.92rem;font-family:"IBM Plex Mono",monospace}

/* faq */
.faq{margin-top:28px;display:flex;flex-direction:column;gap:12px}
.faq details{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:0 22px;transition:border-color .2s}
.faq details[open]{border-color:var(--line-2)}
.faq summary{cursor:pointer;list-style:none;padding:18px 0;font-family:"Space Grotesk",sans-serif;font-weight:600;color:#fff;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.5rem;color:var(--eth-light);transition:transform .25s;line-height:1}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin:0 0 20px;color:var(--silver);font-size:.98rem}

/* footer */
.foot{border-top:1px solid var(--line);background:var(--bg-2);padding:52px 0 28px;margin-top:20px}
.foot-inner{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap}
.foot-note{max-width:52ch;font-size:.86rem;color:var(--muted);margin-top:14px}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{color:var(--muted);text-decoration:none;font-size:.92rem}
.foot-links a:hover{color:var(--eth-light)}
.foot-copy{margin-top:32px;padding-top:20px;border-top:1px solid var(--line);font-size:.82rem;color:var(--muted);font-family:"IBM Plex Mono",monospace}

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

/* responsive */
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-art{max-width:380px;margin-inline:auto;order:-1}
  .cards{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:32px}
  .steps{grid-template-columns:1fr;gap:32px}
  .sim{position:static}
  .menu{position:fixed;inset:66px 0 auto 0;flex-direction:column;background:rgba(11,14,26,.98);backdrop-filter:blur(14px);padding:20px 24px;gap:20px;border-bottom:1px solid var(--line);transform:translateY(-120%);transition:transform .3s;box-shadow:var(--shadow)}
  .menu.open{transform:none}
  .burger{display:flex}
}
@media(max-width:520px){
  body{font-size:16px}
  .hero-stats{gap:22px}
  .quote{padding:26px 24px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}