/* ░░░░░░░░░░ Agentum — landing styles ░░░░░░░░░░ */
:root {
  --ink:       #050A07;
  --ink-2:     #0A130D;
  --panel:     #0C1610;
  --mint:      #A8FF60;
  --green:     #14F195;
  --text:      #E8F2EA;
  --muted:     #8A9990;
  --faint:     #586860;
  --line:      rgba(168, 255, 96, 0.10);
  --line-2:    rgba(168, 255, 96, 0.18);
  --glow:      0 0 60px rgba(20, 241, 149, 0.35);
  --maxw:      1180px;
  --ease:      cubic-bezier(0.22, 1, 0.36, 1);
  --display:   'Clash Display', 'General Sans', sans-serif;
  --body:      'General Sans', system-ui, sans-serif;
  --mono:      'Spline Sans Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--ink);
  color: var(--text);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  position: relative;
}
a { color: inherit; text-decoration: none; }
em { font-style: normal; color: var(--green); }
strong { font-weight: 600; color: var(--text); }

/* grain overlay */
.grain {
  position: fixed; inset: 0; z-index: 9999; pointer-events: none; opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

/* shared grid backdrop for canvases */
.canvas-grid {
  position: absolute; inset: 0; pointer-events: none; border-radius: inherit;
  background-image:
    linear-gradient(rgba(168,255,96,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(168,255,96,.05) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(100% 100% at 50% 40%, #000 30%, transparent 85%);
  mask-image: radial-gradient(100% 100% at 50% 40%, #000 30%, transparent 85%);
}

/* ░░ logo mark ░░ */
.brand-mark { width: 28px; height: 28px; filter: drop-shadow(0 0 8px rgba(20,241,149,.5)); }

/* ░░ buttons ░░ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 13px; font-weight: 500;
  letter-spacing: 0.04em; text-transform: uppercase;
  padding: 10px 18px; border-radius: 999px; cursor: pointer;
  transition: transform .25s var(--ease), background .25s, border-color .25s, box-shadow .25s, color .25s;
  white-space: nowrap;
}
.btn.lg { font-size: 14px; padding: 15px 28px; }
.btn-solid {
  background: linear-gradient(100deg, var(--mint), var(--green));
  color: #042013; font-weight: 600; box-shadow: 0 0 0 rgba(20,241,149,0);
}
.btn-solid:hover { transform: translateY(-2px); box-shadow: 0 10px 40px rgba(20,241,149,.32); }
.btn-ghost { background: rgba(255,255,255,.02); color: var(--text); border: 1px solid var(--line-2); }
.btn-ghost:hover { border-color: var(--green); color: #fff; transform: translateY(-2px); }

/* ░░ NAV ░░ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 48px);
  transition: background .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(5, 10, 7, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-name { font-family: var(--display); font-weight: 600; font-size: 21px; letter-spacing: -0.01em; }
.nav-links { display: flex; gap: 30px; }
.nav-links a { font-size: 14.5px; color: var(--muted); transition: color .2s; }
.nav-links a:hover { color: var(--text); }
.nav-cta { display: flex; gap: 10px; align-items: center; }

/* ░░ HERO ░░ */
.hero { position: relative; min-height: 100svh; display: flex; align-items: center; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0;
  background: url("/assets/hero-bg.png") center right / cover no-repeat;
  animation: drift 26s ease-in-out infinite alternate;
}
@keyframes drift { from { transform: scale(1.05) translateX(0); } to { transform: scale(1.12) translateX(-2%); } }
.hero-veil {
  position: absolute; inset: 0;
  background:
    radial-gradient(120% 90% at 20% 50%, rgba(5,10,7,.92) 0%, rgba(5,10,7,.55) 45%, rgba(5,10,7,.15) 75%),
    linear-gradient(to top, var(--ink) 2%, transparent 30%);
}
.hero-inner { position: relative; z-index: 2; max-width: var(--maxw); width: 100%; margin: 0 auto; padding: 120px clamp(20px, 5vw, 48px) 80px; }
.eyebrow { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--green); margin-bottom: 26px; }
.hero-title { font-family: var(--display); font-weight: 600; font-size: clamp(2.7rem, 7vw, 5.4rem); line-height: 1.02; letter-spacing: -0.025em; margin-bottom: 30px; }
.hero-title span { display: block; }
.hero-title .grad { background: linear-gradient(96deg, var(--mint) 10%, var(--green) 80%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { max-width: 600px; font-size: clamp(1.02rem, 1.6vw, 1.22rem); color: var(--muted); margin-bottom: 38px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-chain, .band-chain { display: inline-flex; align-items: center; gap: 9px; font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--faint); }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px var(--green); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }

/* ░░ SECTIONS ░░ */
.section { max-width: var(--maxw); margin: 0 auto; padding: clamp(80px, 12vw, 150px) clamp(20px, 5vw, 48px); }
.section-head { max-width: 720px; margin-bottom: 60px; }
.kicker { font-family: var(--mono); font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--green); display: inline-block; margin-bottom: 18px; padding-left: 14px; position: relative; }
.kicker::before { content: ""; position: absolute; left: 0; top: 50%; width: 8px; height: 1px; background: var(--green); }
.section-head h2 { font-family: var(--display); font-weight: 600; font-size: clamp(1.9rem, 4vw, 3rem); line-height: 1.08; letter-spacing: -0.02em; }
.lede { margin-top: 20px; color: var(--muted); font-size: 1.08rem; max-width: 620px; }

/* ░░ GRIDS / CARDS ░░ */
.grid { display: grid; gap: 18px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card { position: relative; background: var(--ink-2); border: 1px solid var(--line); border-radius: 18px; padding: 28px 24px; overflow: hidden; transition: transform .35s var(--ease), border-color .35s, background .35s; }
.card::after { content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; background: radial-gradient(130% 80% at 50% -10%, rgba(168,255,96,.07), transparent 60%); opacity: 0; transition: opacity .35s; }
.card:hover { transform: translateY(-5px); border-color: var(--line-2); background: var(--panel); }
.card:hover::after { opacity: 1; }
.card h3 { font-family: var(--display); font-weight: 600; font-size: 1.22rem; letter-spacing: -0.01em; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 0.97rem; }
.prob .num { font-family: var(--mono); font-size: 13px; color: var(--faint); display: block; margin-bottom: 22px; }
.prob h3 { color: var(--text); }

/* ░░░░░ HOW IT WORKS — flow canvas ░░░░░ */
.flowcanvas {
  position: relative; border: 1px solid var(--line); border-radius: 22px;
  background: linear-gradient(180deg, var(--ink-2), var(--ink));
  padding: 70px 40px 56px; overflow: hidden;
}
.flow-wire { position: absolute; top: 96px; left: 0; width: 100%; height: 80px; }
.flow-wire .wire-base { stroke: var(--line-2); stroke-width: 1; }
.flow-wire .wire-dash { stroke: var(--green); stroke-width: 1.6; stroke-dasharray: 5 9; opacity: .8; animation: dashmove 1.2s linear infinite; }
@keyframes dashmove { to { stroke-dashoffset: -28; } }
.flow-nodes { list-style: none; position: relative; z-index: 2; display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.fnode { text-align: center; padding: 0 8px; transition: transform .4s var(--ease); }
.fbead {
  width: 16px; height: 16px; border-radius: 50%; margin: 0 auto 26px; display: block;
  background: var(--ink); border: 2px solid var(--line-2);
  transition: background .4s, border-color .4s, box-shadow .4s, transform .4s;
}
.fnum { font-family: var(--mono); font-size: 12px; color: var(--faint); transition: color .4s; }
.fnode h3 { font-family: var(--display); font-weight: 600; font-size: 1.18rem; margin: 6px 0 8px; transition: color .4s; }
.fnode p { color: var(--muted); font-size: 0.92rem; }
.fnode.on { transform: translateY(-4px); }
.fnode.on .fbead { background: linear-gradient(var(--mint), var(--green)); border-color: var(--green); box-shadow: 0 0 0 5px rgba(20,241,149,.12), 0 0 22px rgba(20,241,149,.6); transform: scale(1.15); }
.fnode.on .fnum { color: var(--green); }
.fnode.on h3 { color: #fff; }

/* ░░░░░ PROTOCOL — interactive showcase ░░░░░ */
.showcase { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: 22px; align-items: stretch; }

/* left accordion */
.sc-tabs { display: flex; flex-direction: column; gap: 12px; }
.sc-tab {
  text-align: left; cursor: pointer; color: inherit; font: inherit;
  background: var(--ink-2); border: 1px solid var(--line); border-radius: 16px;
  padding: 20px 22px; transition: border-color .35s, background .35s;
}
.sc-tab:hover { border-color: var(--line-2); }
.sc-tab-head { display: flex; align-items: center; gap: 12px; }
.sc-tag { font-family: var(--mono); font-size: 10.5px; letter-spacing: .05em; color: var(--green); border: 1px solid var(--line-2); border-radius: 6px; padding: 3px 8px; }
.sc-title { font-family: var(--display); font-weight: 600; font-size: 1.16rem; color: var(--muted); transition: color .35s; }
.sc-no { margin-left: auto; font-family: var(--mono); font-size: 12px; color: var(--faint); width: 26px; height: 26px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 8px; }
.sc-body { display: grid; grid-template-rows: 0fr; opacity: 0; transition: grid-template-rows .45s var(--ease), opacity .45s, margin .45s; }
.sc-body > p { overflow: hidden; }
.sc-body > p { color: var(--muted); font-size: 0.98rem; margin: 0; }
.sc-tab.is-active { background: var(--panel); border-color: var(--line-2); }
.sc-tab.is-active .sc-title { color: #fff; }
.sc-tab.is-active .sc-no { color: var(--green); border-color: var(--line-2); }
.sc-tab.is-active .sc-body { grid-template-rows: 1fr; opacity: 1; margin-top: 16px; }
.sc-progress { display: block; height: 2px; border-radius: 2px; background: var(--line); margin-top: 18px; overflow: hidden; }
.sc-progress i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--mint), var(--green)); }
.sc-tab.is-active .sc-progress i { animation: fill var(--dwell, 6s) linear forwards; }
@keyframes fill { from { width: 0; } to { width: 100%; } }

/* right stage */
.sc-stage {
  position: relative; border: 1px solid var(--line); border-radius: 20px; overflow: hidden;
  background: linear-gradient(180deg, var(--ink-2), var(--ink));
  min-height: 440px; display: grid;
}
.diagram {
  grid-area: 1 / 1; position: relative; z-index: 2;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 26px;
  padding: 44px 36px; text-align: center;
  opacity: 0; transform: scale(.97) translateY(10px); pointer-events: none;
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}
.diagram.is-active { opacity: 1; transform: none; pointer-events: auto; }
.diagram figcaption { font-family: var(--mono); font-size: 12.5px; letter-spacing: .03em; color: var(--muted); }

/* nodes inside diagrams */
.node {
  position: relative; display: inline-flex; flex-direction: column; align-items: center; gap: 3px;
  background: var(--panel); border: 1px solid var(--line-2); border-radius: 14px;
  padding: 14px 20px; min-width: 92px; font-family: var(--mono); font-size: 12px; color: var(--muted);
}
.node-ic { font-size: 18px; line-height: 1; color: var(--green); }
.node-lbl { font-family: var(--display); font-weight: 600; font-size: 0.98rem; color: var(--text); }
.node-sub { font-size: 11px; color: var(--faint); }
.node-glow { border-color: var(--green); box-shadow: 0 0 0 4px rgba(20,241,149,.08), var(--glow); }

/* P1 identity */
.diagram[data-i="0"] { gap: 0; }
.dg-center { z-index: 3; margin-bottom: 88px; }
.dg-wires { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; }
.dg-wires .lk { fill: none; stroke: var(--green); stroke-width: 1.4; stroke-dasharray: 4 7; opacity: .7; animation: dashmove 1s linear infinite; }
.dg-chips { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; z-index: 3; margin-bottom: 24px; }
.chip { font-family: var(--mono); font-size: 11.5px; color: var(--muted); background: var(--ink-2); border: 1px solid var(--line-2); border-radius: 9px; padding: 8px 13px; }
.chip-on { color: #042013; background: linear-gradient(100deg, var(--mint), var(--green)); border-color: transparent; font-weight: 600; box-shadow: 0 0 18px rgba(20,241,149,.4); }

/* P2 escrow / P4 zk rows */
.esc-row, .tee-row, .zk-row { display: flex; align-items: center; justify-content: center; gap: clamp(14px, 5vw, 56px); z-index: 3; }
.esc-wires, .zk-wires { position: absolute; left: 6%; right: 6%; width: 88%; top: 50%; height: 80px; transform: translateY(-60px); z-index: 1; }
.esc-wires .wire-base, .zk-wires .wire-base { stroke: var(--line-2); stroke-width: 1; }
.esc-wires .wire-dash, .zk-wires .wire-dash { stroke: var(--green); stroke-width: 1.6; stroke-dasharray: 5 9; animation: dashmove 1.2s linear infinite; }
.coin { fill: var(--green); filter: drop-shadow(0 0 6px var(--green)); }
.proof { border-color: var(--green); }
.proof .node-ic { color: var(--green); }

/* P3 TEE enclave ring */
.tee-box { position: relative; padding: 22px 30px; }
.tee-ring { position: absolute; inset: -7px; border-radius: 18px; border: 1px solid var(--green); opacity: .5; animation: breathe 2.6s ease-in-out infinite; }
@keyframes breathe { 0%,100% { transform: scale(1); opacity: .5; } 50% { transform: scale(1.06); opacity: .15; } }

/* ░░░░░ WHY — scroll-synced ░░░░░ */
.why-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 60px; align-items: start; }
.why-sticky { position: sticky; top: 120px; }
.why-sticky h2 { font-family: var(--display); font-weight: 600; font-size: clamp(2rem, 4.4vw, 3.2rem); line-height: 1.05; letter-spacing: -0.02em; margin-bottom: 22px; }
.why-sticky .btn { margin-top: 14px; }
.why-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.why-item {
  border-top: 1px solid var(--line); padding: 34px 0 30px;
  opacity: .34; transition: opacity .5s var(--ease), transform .5s var(--ease); transform: translateX(6px);
}
.why-item:last-child { border-bottom: 1px solid var(--line); }
.why-no { font-family: var(--mono); font-size: 11.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--faint); }
.why-item h3 { font-family: var(--display); font-weight: 600; font-size: clamp(1.7rem, 3vw, 2.4rem); letter-spacing: -0.01em; margin: 10px 0 0; color: var(--muted); transition: color .5s; }
.why-item p { color: var(--muted); font-size: 1rem; margin-top: 14px; max-width: 460px; max-height: 0; opacity: 0; overflow: hidden; transition: max-height .5s var(--ease), opacity .5s, margin .5s; }
.why-item.is-active { opacity: 1; transform: none; }
.why-item.is-active h3 { color: #fff; background: linear-gradient(96deg, var(--mint), var(--green)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.why-item.is-active p { max-height: 160px; opacity: 1; }

/* ░░ CLOSING BAND ░░ */
.band { text-align: center; padding: clamp(90px, 14vw, 160px) clamp(20px, 5vw, 48px); position: relative; overflow: hidden;
  background: radial-gradient(60% 90% at 50% 120%, rgba(20,241,149,.16), transparent 70%), var(--ink); border-top: 1px solid var(--line); }
.band-mark { width: 64px; height: 64px; filter: drop-shadow(0 0 24px rgba(20,241,149,.55)); animation: float 6s ease-in-out infinite; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.band h2 { font-family: var(--display); font-weight: 600; font-size: clamp(2rem, 5vw, 3.4rem); line-height: 1.08; letter-spacing: -0.02em; margin: 28px 0 18px; }
.band p { color: var(--muted); max-width: 540px; margin: 0 auto 34px; font-size: 1.08rem; }
.band-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 30px; }

/* ░░ FOOTER ░░ */
.footer { max-width: var(--maxw); margin: 0 auto; padding: 50px clamp(20px, 5vw, 48px) 70px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 24px; border-top: 1px solid var(--line); }
.foot-brand { display: flex; align-items: center; gap: 10px; }
.foot-brand .brand-name { font-family: var(--display); font-weight: 600; font-size: 19px; }
.foot-links { display: flex; gap: 26px; }
.foot-links a { color: var(--muted); font-size: 14.5px; transition: color .2s; }
.foot-links a:hover { color: var(--green); }
.foot-copy { color: var(--faint); font-size: 13px; font-family: var(--mono); width: 100%; }

/* ░░ REVEAL ░░ */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .8s var(--ease), transform .8s var(--ease); transition-delay: var(--d, 0s); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-bg, .dot, .band-mark, .wire-dash, .lk, .tee-ring, .coin { animation: none; }
}

/* ░░ RESPONSIVE ░░ */
@media (max-width: 960px) {
  .showcase { grid-template-columns: 1fr; }
  .sc-stage { min-height: 380px; order: -1; }
  .why-grid { grid-template-columns: 1fr; gap: 30px; }
  .why-sticky { position: static; }
}
@media (max-width: 920px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .flow-nodes { grid-template-columns: repeat(2, 1fr); gap: 26px; }
  .flow-wire { display: none; }
  .fbead { margin-bottom: 14px; }
}
@media (max-width: 760px) {
  .nav-links { display: none; }
  .nav { padding: 14px 20px; }
  .hero-veil { background: linear-gradient(to top, var(--ink) 6%, rgba(5,10,7,.5) 45%, rgba(5,10,7,.7) 100%); }
  .hero-inner { padding-top: 110px; }
}
@media (max-width: 540px) {
  .grid-4, .flow-nodes { grid-template-columns: 1fr; }
  body { font-size: 16px; }
  .footer { flex-direction: column; align-items: flex-start; }
  .esc-row, .tee-row, .zk-row { gap: 12px; }
  .node { min-width: 74px; padding: 12px 12px; }
}