/* aisopach.com — Fifth Meridian / AIsopach
   Brand: benzene mark, Doto wordmark, phosphor green on near-black.
   One stylesheet, no framework, no build step. */

:root {
  --ink-0: #04090a;
  --ink-1: #0a1416;
  --ink-2: #0f1e21;
  --phos: #34e27a;
  --phos-d: #1c7f49;
  --phos-g: #0e3b23;
  --white: #f2f7f6;
  --fog: #9fb3b4;
  --dim: #657a7c;
  --rule: #1b2c2f;
  --amber: #ffb000;
  --doto: "Doto", ui-monospace, monospace;
  --grot: "Space Grotesk", system-ui, -apple-system, sans-serif;
  --sans: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --pad: clamp(20px, 4vw, 56px);
  --wide: 1328px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink-0);
  color: var(--white);
  font-family: var(--sans);
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--grot); margin: 0; letter-spacing: -0.02em; font-weight: 600; }
h1 { font-size: clamp(34px, 5.2vw, 70px); line-height: 1.02; }
h2 { font-size: clamp(28px, 3.6vw, 46px); line-height: 1.1; }
h3 { font-size: clamp(19px, 1.7vw, 23px); line-height: 1.22; }
p { margin: 0; }
a { color: var(--phos); text-decoration: none; }
a:hover { color: var(--white); }
:focus-visible { outline: 2px solid var(--phos); outline-offset: 3px; }
::selection { background: var(--phos); color: var(--ink-0); }
svg { display: block; }

.wrap { max-width: var(--wide); margin: 0 auto; }
.eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.24em;
  text-transform: uppercase; color: var(--phos);
}
.lede { font-size: clamp(15.5px, 1.3vw, 17px); line-height: 1.65; color: var(--fog); max-width: 68ch; }
.muted { color: var(--dim); }
.num { font-family: var(--doto); font-weight: 900; }
.card p b { color: var(--white); font-weight: 500; }
.viz { max-width: 100%; height: auto; }
/* every generated data visual scales down with its container */
.card > svg, .card figure > svg, .panel > svg, .two-col > div > svg, .market svg {
  display: block; max-width: 100%; height: auto;
}
.viz-note { font-size: 12.5px; line-height: 1.55; color: var(--dim); margin-top: 8px; }

/* ---- buttons ---- */
.btn, .btn-ghost {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 14px 26px; border-radius: 4px;
  font-family: var(--grot); font-weight: 600; font-size: 15px; cursor: pointer;
  border: 1px solid transparent; transition: transform .12s ease, background .12s ease;
}
.btn { background: var(--phos); color: var(--ink-0); }
.btn:hover { background: #4bf08c; color: var(--ink-0); transform: translateY(-1px); }
.btn-ghost { background: transparent; border-color: var(--rule); color: var(--white); font-weight: 500; }
.btn-ghost:hover { border-color: var(--phos); color: var(--phos); }

/* ---- header ---- */
.site-head {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; height: 78px; padding: 0 var(--pad);
  background: rgba(4, 9, 10, .88); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-name { font-family: var(--doto); font-weight: 900; font-size: 19px; letter-spacing: .08em; }
.brand-name .ai { color: var(--phos); }
.brand-sub {
  font-family: var(--doto); font-weight: 700; font-size: 8px;
  letter-spacing: .42em; color: var(--dim); margin-top: 5px;
}
.site-nav { display: flex; align-items: center; gap: 34px; }
.site-nav a { color: var(--fog); font-size: 14px; font-weight: 400; }
.site-nav a:hover { color: var(--white); }
.site-nav .btn { min-height: 40px; padding: 10px 20px; font-size: 14px; font-weight: 600; color: var(--ink-0); }
.site-nav .btn:hover { color: var(--ink-0); }
.nav-toggle { display: none; background: none; border: 0; padding: 12px; cursor: pointer; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--fog); margin: 4px 0; }

/* ---- hero ---- */
.hero { position: relative; isolation: isolate; overflow: hidden; padding: clamp(44px, 6vw, 92px) var(--pad) clamp(40px, 5vw, 84px); }
.hero::before {
  content: ""; position: absolute; left: -180px; top: -140px; width: 760px; height: 760px;
  border-radius: 50%; pointer-events: none;
  background: radial-gradient(circle, rgba(52, 226, 122, .10) 0%, rgba(52, 226, 122, 0) 62%);
}
/* faint well-log strata behind the hero; fades out before the stat band */
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; opacity: .55;
  background: url("/assets/img/hero-bg.jpg") center / cover no-repeat;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 55%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 0%, #000 55%, transparent 100%);
}
.hero-panel svg { width: 100%; height: auto; }

/* ---- stat band ---- */
.band {
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  background: var(--ink-1); padding: 44px var(--pad);
}
.band-grid { display: grid; gap: 32px; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.stat .num { font-size: clamp(32px, 3.2vw, 44px); line-height: 1; }
.stat .unit { font-size: .44em; color: var(--dim); margin-left: 3px; }
.stat .lbl {
  font-family: var(--mono); font-size: 11px; letter-spacing: .16em;
  text-transform: uppercase; color: var(--fog); margin-top: 14px;
}
.stat .sub { font-size: 12px; color: var(--dim); margin-top: 8px; line-height: 1.45; }
.stat.on .num { color: var(--phos); }

/* ---- sections ---- */
section { padding: clamp(56px, 7vw, 96px) var(--pad); }
section.alt { background: var(--ink-1); }
section > .wrap > h2 { margin-top: 18px; max-width: 22ch; }
section > .wrap > .lede { margin-top: 18px; }

.two-col { display: grid; gap: clamp(32px, 4vw, 64px); grid-template-columns: minmax(0, 1fr) minmax(0, 520px); align-items: start; margin-top: 48px; }
.rows { border-bottom: 1px solid var(--rule); }
.row { display: flex; gap: 20px; padding: 22px 0; border-top: 1px solid var(--rule); }
.row .num { font-size: 15px; color: var(--phos); flex: 0 0 28px; }
.row h3 { font-size: 18px; }
.row p { font-size: 14.5px; line-height: 1.65; color: var(--fog); margin-top: 7px; max-width: 52ch; }

.card { background: var(--ink-1); border: 1px solid var(--rule); border-radius: 12px; padding: clamp(22px, 2.4vw, 30px); }
section.alt .card { background: var(--ink-0); }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.code { font-family: var(--mono); font-size: 11px; letter-spacing: .2em; color: var(--dim); }
.tag {
  font-family: var(--mono); font-size: 10px; letter-spacing: .16em; text-transform: uppercase;
  padding: 4px 9px; border-radius: 3px; background: var(--ink-2); color: var(--fog);
  border: 1px solid var(--rule); white-space: nowrap;
}
.tag.live { background: var(--phos); color: var(--ink-0); border-color: var(--phos); }
.card h3 { margin-top: 14px; }
.card p { font-size: 14.5px; line-height: 1.65; color: var(--fog); margin-top: 12px; }
.card figure { margin: 22px 0 0; }

.cards-2 { display: grid; gap: 20px; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 48px; }

.pipe { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border: 1px solid var(--rule); border-radius: 12px; background: var(--ink-0); overflow: hidden; margin-top: 8px; }
.pipe > div { padding: 26px 22px; border-left: 2px solid var(--rule); }
.pipe > div:first-child { border-left-color: var(--rule); }
.pipe .on { border-left-color: var(--phos); background: var(--ink-1); }
.pipe h3 { font-size: 19px; color: var(--fog); }
.pipe .on h3 { color: var(--phos); }
.pipe .hd { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; }
.pipe .hd .num { font-size: 13px; color: var(--dim); }
.pipe p { font-size: 13.5px; line-height: 1.55; color: var(--dim); margin-top: 10px; }

.market { display: grid; gap: 20px; grid-template-columns: 1.5fr 1fr 1fr; margin-top: 48px; align-items: stretch; }
.market .card { display: flex; flex-direction: column; gap: 18px; }
.market .card-label { font-family: var(--mono); font-size: 11px; letter-spacing: .2em; color: var(--dim); }
.split { display: flex; gap: 28px; padding-top: 26px; border-top: 1px solid var(--rule); flex-wrap: wrap; }
.split .stat .num { font-size: 32px; }

.lock-rows { border-bottom: 1px solid var(--rule); }
.lock { display: flex; gap: 18px; align-items: flex-start; padding: 24px 0; border-top: 1px solid var(--rule); }
.lock svg { flex: 0 0 auto; margin-top: 2px; }
.lock h3 { font-size: 17.5px; font-weight: 500; }
.lock p { font-size: 14px; color: var(--dim); margin-top: 6px; }
.after-locks { padding-top: 26px; font-size: 14.5px; line-height: 1.7; color: var(--fog); }

/* ---- subdued photo backgrounds ----
   A warm photograph sits behind a lower section at low opacity, masked top and
   bottom so it never shows an edge, and drifts slowly against the scroll. */
.has-bg { position: relative; isolation: isolate; overflow: hidden; }
.bg-photo { position: absolute; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.bg-photo img {
  position: absolute; left: 0; right: 0; top: -16%; width: 100%; height: 132%;
  object-fit: cover; opacity: .2; will-change: transform;
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 22%, #000 78%, transparent 100%);
  mask-image: linear-gradient(180deg, transparent 0%, #000 22%, #000 78%, transparent 100%);
}
.bg-photo.dim img { opacity: .14; }
.bg-photo::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(70% 80% at 50% 50%, rgba(4,9,10,0) 0%, rgba(4,9,10,.45) 100%);
}

/* ---- reveal ---- */
.motion-on .reveal { opacity: 0; transform: translate3d(0, 22px, 0); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.motion-on .reveal.in { opacity: 1; transform: none; }
.motion-on .band .stat { transition-duration: .55s; }

/* ---- access ---- */
#access { position: relative; overflow: hidden; }
#access::before {
  content: ""; position: absolute; right: -220px; top: -180px; width: 820px; height: 820px;
  border-radius: 50%; pointer-events: none;
  background: radial-gradient(circle, rgba(52, 226, 122, .09) 0%, rgba(52, 226, 122, 0) 62%);
}
.access-grid { position: relative; display: grid; gap: clamp(32px, 5vw, 72px); grid-template-columns: minmax(0, 1fr) minmax(0, 620px); align-items: center; }
.access-stats { display: flex; gap: 36px; margin-top: 36px; flex-wrap: wrap; }
.access-stats .num { font-size: 30px; }
form.access { background: var(--ink-0); }
.f-row { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; margin-bottom: 18px; }
label.f { display: flex; flex-direction: column; gap: 9px; }
label.f > span {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .16em;
  text-transform: uppercase; color: var(--fog);
}
label.f input, label.f select, label.f textarea {
  font-family: var(--sans); font-size: 14px; color: var(--white);
  background: var(--ink-0); border: 1px solid var(--rule); border-radius: 4px;
  padding: 14px; min-height: 50px; width: 100%;
}
section.alt label.f input, section.alt label.f select, section.alt label.f textarea { background: var(--ink-1); }
label.f textarea { min-height: 84px; resize: vertical; }
label.f input::placeholder, label.f textarea::placeholder { color: var(--dim); }
.consent { display: flex; gap: 11px; align-items: flex-start; margin-top: 4px; }
.consent input { width: 18px; height: 18px; margin: 3px 0 0; accent-color: var(--phos); flex: 0 0 auto; }
.consent span { font-size: 13px; line-height: 1.55; color: var(--dim); }
form.access .btn { width: 100%; margin-top: 24px; }
.form-msg { font-size: 13.5px; line-height: 1.6; margin-top: 16px; color: var(--phos); }
.form-msg:empty { display: none; }

/* ---- footer ---- */
.site-foot { border-top: 1px solid var(--rule); background: var(--ink-1); padding: 56px var(--pad) 40px; }
.foot-grid { display: grid; gap: 48px; grid-template-columns: minmax(0, 420px) minmax(0, 620px); justify-content: space-between; }
.foot-grid p { font-size: 13.5px; line-height: 1.7; color: var(--dim); margin-top: 22px; }
.foot-dom { font-family: var(--mono); font-size: 12px; color: var(--fog); margin-top: 20px; }
.sources h2 { font-family: var(--mono); font-size: 10.5px; letter-spacing: .2em; color: var(--fog); font-weight: 400; margin-bottom: 14px; }
.sources li { font-size: 11.5px; line-height: 1.7; color: var(--dim); list-style: none; }
.sources ul { margin: 0; padding: 0; }
.sources b { color: var(--fog); font-weight: 500; }
.legal { border-top: 1px solid var(--rule); margin-top: 40px; padding-top: 24px; font-size: 11.5px; line-height: 1.7; color: var(--dim); }

/* ---- responsive ---- */
@media (max-width: 1100px) {
  .market { grid-template-columns: 1fr 1fr; }
  .market .card:first-child { grid-column: 1 / -1; }
  .band-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pipe { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-grid, .two-col, .access-grid, .foot-grid { grid-template-columns: minmax(0, 1fr); }
  .hero .lede { max-width: 48ch; }
}
@media (max-width: 760px) {
  .site-nav { display: none; }
  .site-nav.open {
    display: flex; flex-direction: column; align-items: stretch; gap: 0;
    position: absolute; left: 0; right: 0; top: 78px; padding: 8px var(--pad) 20px;
    background: var(--ink-1); border-bottom: 1px solid var(--rule);
  }
  .site-nav.open a { padding: 14px 0; border-bottom: 1px solid var(--rule); }
  .site-nav.open .btn { margin-top: 16px; }
  .nav-toggle { display: block; }
  .cards-2, .market, .f-row { grid-template-columns: minmax(0, 1fr); }
  .pipe { grid-template-columns: minmax(0, 1fr); }
  .panel-bar { font-size: 9.5px; letter-spacing: .12em; }
  .panel-foot .num { font-size: 26px; }
  .panel-foot span { font-size: 9px; letter-spacing: .1em; }
  .pipe > div { border-left: 0; border-top: 2px solid var(--rule); }
  .pipe > div:first-child { border-top: 0; }
  .pipe .on { border-top-color: var(--phos); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn:hover { transform: none; }
}