/* ARC Proofing — landing page (stacked). Monotone, per brand spec §6.
   Builds on arcproof.css tokens; load arcproof.css first. */

.lp { min-height: 100vh; }
.lp-wrap { max-width: 1160px; margin: 0 auto; padding: 0 40px; }
.lp-sec { border-top: 1px solid var(--n-880); padding-top: 104px; padding-bottom: 104px; }
.lp-eyebrow {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--n-600); margin: 0 0 22px;
}
.lp-h2 { font-size: clamp(28px, 3.6vw, 42px); font-weight: 400; letter-spacing: -0.025em; line-height: 1.08; margin: 0; text-wrap: balance; }
.lp-h2 .dim { color: var(--n-500); }
.lp-lead { font-size: 18px; line-height: 1.62; color: var(--n-400); font-weight: 400; }

/* ---------- masthead hero ---------- */
.mast { padding-top: 84px; padding-bottom: 48px; }

/* ---------- masthead two-column: copy + globe showpiece ---------- */
.mast-grid { display: grid; grid-template-columns: 1fr; gap: 0; align-items: center; }
@media (min-width: 1040px) {
  .mast-grid { grid-template-columns: minmax(0, 1fr) 480px; gap: 48px; align-items: stretch; }
}
.showpiece { display: none; }
@media (min-width: 1040px) {
  .showpiece { display: flex; flex-direction: column; align-items: center; position: relative; }
}
.globe-stage { position: relative; width: 100%; flex: 1 1 auto; min-height: 420px; }
.showpiece .ring {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  border: 1px solid var(--n-800); border-radius: 50%; pointer-events: none;
}
.showpiece .ring.r1 { width: 256px; height: 256px; border-color: var(--n-800); }
.showpiece .ring.r2 { width: 336px; height: 336px; border-color: var(--n-850); }
.showpiece .ring.r3 { width: 416px; height: 416px; border-color: var(--n-880); }
.showpiece .ring.r4 { width: 496px; height: 496px; border-color: var(--n-900); }
.showpiece .globe-mount {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 380px; height: 380px; opacity: 0.78; z-index: 1;
}
/* block-height readout — below the globe, inline with the CTA row (no glass) */
.bh-readout { flex: 0 0 auto; text-align: center; padding-bottom: 0; }
.showpiece .bh-val {
  font-family: var(--font-mono); font-size: 46px; font-weight: 400;
  letter-spacing: -0.02em; color: var(--n-050); line-height: 1;
}
.showpiece .bh-val.loading { animation: pulse 1.6s ease-in-out infinite; }
.showpiece .bh-label {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--n-400); margin-top: 38px; display: flex; align-items: center; justify-content: center; gap: 7px;
}
.showpiece .bh-label .d { width: 6px; height: 6px; border-radius: 50%; background: #f7931a; box-shadow: 0 0 6px #f7931a; animation: btcPulse 2s ease-in-out infinite; }
@keyframes btcPulse { 0%, 100% { opacity: 1; box-shadow: 0 0 6px #f7931a; } 50% { opacity: .4; box-shadow: 0 0 2px #f7931a; } }
.showpiece .orbit-track {
  position: absolute; top: 50%; left: 50%; width: 0; height: 0; z-index: 2; pointer-events: none;
}
.showpiece .node {
  position: absolute; top: -4px; width: 8px; height: 8px; border-radius: 50%;
  background: var(--n-600);
}
.showpiece .node.lit { top: -5px; width: 10px; height: 10px; background: var(--n-100); box-shadow: 0 0 10px rgba(240,240,240,0.35); }
.showpiece .bh-tag { position: absolute; z-index: 4; }
.showpiece .bh-tag .k { display: block; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--n-600); }
.showpiece .bh-tag .v { display: block; font-family: var(--font-mono); font-size: 12px; color: var(--n-400); margin-top: 4px; }
.showpiece .t-sha { top: 56px; right: 40px; text-align: right; }
.showpiece .t-merkle { bottom: 80px; left: 40px; }
.showpiece .t-conf { top: 50%; right: 24px; transform: translateY(-50%); text-align: right; }
@keyframes orbit { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
.mast-eyebrow {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.24em;
  text-transform: uppercase; color: var(--n-400); margin: 0 0 20px;
}
.mast-h1 {
  margin: 0; font-weight: var(--head-weight); letter-spacing: -0.035em;
  line-height: 0.98; font-size: clamp(40px, 6.4vw, 84px);
}
.mast-h1 .fixed { color: var(--n-600); display: block; font-size: 0.46em; letter-spacing: -0.02em; margin-bottom: 0.12em; }
.mast-stack { display: block; }
.mast-line { display: block; color: var(--n-800); transition: color .55s ease, transform .55s ease; }
.mast-line.on { color: var(--n-050); }
.mast-url {
  font-family: var(--font-mono); font-size: clamp(15px, 1.7vw, 21px);
  color: var(--n-500); margin: 26px 0 0; height: 1.4em; letter-spacing: 0;
}
.mast-url .arrow { color: var(--n-600); margin-right: 12px; }
.mast-url .host { color: var(--n-050); }
.mast-lead { font-size: 18px; line-height: 1.55; color: var(--n-400); max-width: 560px; margin: 26px 0 0; }
.mast-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 30px; }
.trust { display: flex; gap: 28px; flex-wrap: wrap; margin-top: 30px; }
.trust .ti { display: flex; align-items: center; gap: 9px; font-size: 13px; color: var(--n-500); }
.trust .ti .d { width: 6px; height: 6px; border-radius: 50%; background: #3d9e5f; box-shadow: 0 0 5px #3d9e5f; animation: trustPulse 2.6s ease-in-out infinite; }
@keyframes trustPulse { 0%, 100% { opacity: 1; box-shadow: 0 0 5px #3d9e5f; } 50% { opacity: .45; box-shadow: 0 0 2px #3d9e5f; } }
.trust .ti:nth-child(2) .d { background: #c8860a; box-shadow: 0 0 4px #c8860a; animation: none; }

/* ---------- verticals strip ---------- */
.vstrip-head { max-width: 720px; margin-bottom: 40px; }
.vstrip-head .lp-lead { margin-top: 22px; }
.vpills { display: flex; flex-wrap: wrap; gap: 10px; }
.vpill {
  font-family: var(--font-mono); font-size: 13px; color: var(--n-400);
  padding: 11px 18px; border: 1px solid var(--n-800); background: var(--n-925);
  transition: color .25s, border-color .25s, background .25s; cursor: pointer;
}
.vpill:hover, .vpill.on { color: var(--n-050); border-color: var(--n-500); background: var(--n-850); }
.vpill .ar { color: var(--n-700); margin-left: 9px; transition: color .25s; }
.vpill:hover .ar, .vpill.on .ar { color: var(--n-300); }

/* hovered-vertical description (reserved space → no layout shift) */
.vdesc { margin-top: 26px; min-height: 104px; max-width: 660px; }
.vd-card { animation: vdFade .28s ease both; }
@keyframes vdFade { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }
.vd-url { font-size: 12px; color: var(--n-500); margin: 0 0 10px; letter-spacing: 0; }
.vd-url::before { content: '→ '; color: var(--n-700); }
.vd-tag { font-size: 17px; font-weight: 500; color: var(--n-050); letter-spacing: -0.01em; margin: 0 0 9px; }
.vd-desc { font-size: 14.5px; line-height: 1.62; color: var(--n-400); margin: 0; }
.vd-hint { font-family: var(--font-mono); font-size: 12.5px; color: var(--n-600); margin: 0; padding-top: 2px; }

/* ---------- pillars ---------- */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--n-880); border: 1px solid var(--n-880); }
.pillar { background: var(--n-925); padding: 48px 40px; transition: background .5s, color .5s; cursor: pointer; }
.pillar .glyph { font-size: 40px; line-height: 1; color: var(--n-700); margin-bottom: 34px; transition: color .5s, transform .5s; }
.pillar h3 { font-size: 23px; font-weight: 400; margin: 0 0 12px; letter-spacing: -0.02em; }
.pillar p { font-size: 14px; line-height: 1.6; color: var(--n-500); margin: 0; transition: color .5s; }
.pillar .enter { margin-top: 34px; font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em; color: var(--n-500); display: flex; align-items: center; gap: 8px; transition: color .5s; }
.pillar .enter .ar { transition: transform .3s; }
.pillar:hover { background: var(--n-050); color: var(--n-950); }
.pillar:hover .glyph { color: #c0392b; text-shadow: 0 0 12px rgba(192,57,43,0.7), 0 0 28px rgba(192,57,43,0.35); transform: scale(1.08); }
.pillar:hover p, .pillar:hover .enter { color: var(--n-700); }
.pillar:hover .enter .ar { transform: translateX(6px); }
.pillar:nth-child(2):hover .glyph { color: #f7931a; text-shadow: 0 0 12px rgba(247,147,26,0.7), 0 0 28px rgba(247,147,26,0.35); }
.pillar:nth-child(3):hover .glyph { color: #3d9e5f; text-shadow: 0 0 12px rgba(61,158,95,0.7), 0 0 28px rgba(61,158,95,0.35); }

/* ---------- legal acceptance ---------- */
.legal-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; max-width: 1160px; margin-top: 44px; }
.lcard { border: 1px solid var(--n-800); background: var(--n-925); padding: 32px; }
.lcard .when { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--n-600); margin: 0 0 14px; }
.lcard .court { font-size: 17px; color: var(--n-100); font-weight: 400; margin: 0 0 12px; }
.lcard .what { font-size: 14px; line-height: 1.6; color: var(--n-500); margin: 0; }
/* pending / to-be-announced jurisdiction */
.lcard.ghost { border-style: dashed; border-color: var(--n-800); background: transparent; }
.lcard.ghost .when { color: var(--n-700); }
.lcard.ghost .court { color: var(--n-600); }
.lcard.ghost .what { color: var(--n-700); }

/* ---------- in the field ---------- */
.field-grid { display: grid; grid-template-columns: 2fr 3fr; gap: 64px; align-items: center; }
.field-copy .lp-h2 { margin-bottom: 22px; }
.field-copy .lp-lead { max-width: 540px; }
.scen-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 40px; }
.scen { padding: 18px; background: var(--n-925); border: 1px solid var(--n-880); }
.scen h4 { font-size: 14.5px; font-weight: 500; color: var(--n-100); margin: 0 0 6px; }
.scen p { font-size: 13px; line-height: 1.55; color: var(--n-500); margin: 0; }
.meta-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 28px; }
.meta { text-align: center; padding: 14px 6px; }
.meta .ml { font-size: 12px; color: var(--n-200); margin: 0 0 3px; font-weight: 500; }
.meta .md { font-family: var(--font-mono); font-size: 10.5px; color: var(--n-600); margin: 0; }
.field-foot { font-family: var(--font-mono); font-size: 12px; color: var(--n-500); border-left: 1px solid var(--n-700); padding-left: 16px; margin-top: 36px; }

/* phone mockup */
.phone-wrap { display: flex; align-items: center; justify-content: center; perspective: 1000px; }
.phone { position: relative; width: 272px; height: 544px; background: var(--n-900); border-radius: 46px; border: 3px solid var(--n-700); box-shadow: 0 40px 80px rgba(0,0,0,.5); overflow: hidden; transform-style: preserve-3d; transition: transform .2s ease-out; will-change: transform; }
.phone .viewfinder { position: absolute; inset: 0; z-index: 1; pointer-events: none; background: linear-gradient(to bottom, transparent 52%, rgba(10,10,10,.85)); }
.phone .notch { position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 104px; height: 26px; background: var(--n-900); border-radius: 0 0 16px 16px; z-index: 5; }
.phone .screen { position: absolute; inset: 8px; border-radius: 38px; overflow: hidden; background: linear-gradient(160deg, var(--n-800), var(--n-950)); }
.phone .grid-l { position: absolute; inset: 0; opacity: .16; }
.phone .grid-l i { position: absolute; background: #fff; }
.phone .topbar { position: absolute; top: 38px; left: 16px; right: 16px; display: flex; justify-content: space-between; align-items: center; font-family: var(--font-mono); font-size: 11px; z-index: 3; }
.phone .gps { display: flex; align-items: center; gap: 7px; color: var(--n-200); }
.phone .gps .d { width: 7px; height: 7px; border-radius: 50%; background: #3d9e5f; box-shadow: 0 0 6px rgba(61,158,95,0.8); animation: none; }
.phone .clk { color: rgba(255,255,255,.92); }
.phone .focus { position: absolute; inset: 0; z-index: 2; display: flex; align-items: center; justify-content: center; }
.phone .focus i { width: 92px; height: 92px; border: 1px solid rgba(255,255,255,.45); animation: breathe 2.4s ease-in-out infinite; }
@keyframes breathe { 0%,100% { transform: scale(1); } 50% { transform: scale(1.04); } }
.phone .readout { position: absolute; bottom: 92px; left: 16px; right: 16px; font-family: var(--font-mono); font-size: 11px; display: grid; gap: 5px; z-index: 3; }
.phone .readout .r { display: flex; justify-content: space-between; }
.phone .readout .k { color: var(--n-500); }
.phone .readout .v { color: #fff; }
.phone .readout .r:nth-child(1) .v,
.phone .readout .r:nth-child(2) .v { color: #3d9e5f; }
.phone .shutter { position: absolute; bottom: 22px; left: 50%; transform: translateX(-50%); width: 62px; height: 62px; z-index: 4; border-radius: 50%; border: 4px solid var(--n-200); display: flex; align-items: center; justify-content: center; cursor: pointer; transition: transform .2s ease; }
.phone .shutter:hover,
.phone .shutter:active { transform: translateX(-50%) scale(1.06); }
.phone .shutter i { width: 46px; height: 46px; border-radius: 50%; background: var(--n-100); animation: pulse 1.6s ease-in-out infinite; transition: background .25s, box-shadow .25s; }
.phone .shutter:hover i, .phone .shutter:active i { background: #f7931a; box-shadow: 0 0 14px rgba(247,147,26,0.6); }
.phone .flash { position: absolute; inset: 0; z-index: 6; pointer-events: none; background: #fff; opacity: 0; }
.phone .shutter:hover ~ .flash,
.phone .shutter:active ~ .flash { animation: phoneFlash 1.5s ease-out infinite; }
@keyframes phoneFlash { 0% { opacity: 0; } 16% { opacity: .5; } 33% { opacity: 0; } 100% { opacity: 0; } }
.phone .sbtn { position: absolute; background: var(--n-700); }
.phone-glow { position: absolute; inset: -40px; z-index: -1; filter: blur(60px); opacity: .25; background: radial-gradient(circle, rgba(255,255,255,.3), transparent 70%); }

/* ---------- how it works ---------- */
.steps-head { text-align: center; margin-bottom: 64px; }
.steps-head .lp-eyebrow { margin-bottom: 18px; }
.steps { position: relative; }
.steps .rail { position: absolute; left: 0; right: 0; top: 70px; height: 1px; background: linear-gradient(90deg, transparent, var(--n-700) 12%, var(--n-700) 88%, transparent); }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; }
.step { text-align: center; }
.step .num { font-size: 64px; font-weight: 300; color: var(--n-800); line-height: 1; letter-spacing: -0.02em; }
.step .node { width: 8px; height: 8px; border-radius: 50%; background: var(--n-200); margin: 22px auto 0; box-shadow: 0 0 0 4px var(--n-950); position: relative; z-index: 2; }
.step h3 { font-size: 19px; font-weight: 500; color: var(--n-050); margin: 26px 0 10px; }
.step p { font-size: 14px; line-height: 1.6; color: var(--n-500); margin: 0; }

/* ---------- use cases ---------- */
.ucases-head { text-align: center; margin-bottom: 56px; }
.ucases-head .lp-eyebrow { margin-bottom: 18px; }
.ucases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.ucard { border: 1px solid var(--n-800); background: var(--n-925); padding: 30px; transition: border-color .5s cubic-bezier(.22,1,.36,1), background .5s cubic-bezier(.22,1,.36,1); }
.ucard:hover { border-color: var(--n-650); background: var(--n-900); }
.ucard .utop { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; margin-bottom: 24px; }
.ucard .umark { font-family: var(--font-mono); font-size: 12px; color: var(--n-600); padding-top: 8px; }
.ucard .ustat { text-align: right; }
.ucard .ustat .sv { font-size: 30px; font-weight: 300; color: var(--n-100); letter-spacing: -0.02em; line-height: 1; transition: color .55s cubic-bezier(.22,1,.36,1), text-shadow .55s cubic-bezier(.22,1,.36,1); }
.ucard:hover .ustat .sv { color: #3d9e5f; text-shadow: 0 0 18px rgba(61,158,95,0.4); }
.ucard .ustat .sl { font-size: 10px; line-height: 1.35; color: var(--n-600); text-transform: uppercase; letter-spacing: 0.04em; max-width: 150px; margin-top: 8px; }
.ucard h3 { font-size: 18px; font-weight: 500; color: var(--n-050); margin: 0 0 8px; }
.ucard p { font-size: 14px; line-height: 1.6; color: var(--n-500); margin: 0; }

/* ---------- security (self-contained shader backdrop) ---------- */
.sec-shader { position: relative; overflow: hidden; }
.sec-shader .shader-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; z-index: 0; opacity: .7; pointer-events: none; }
.sec-shader .sec-veil {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    linear-gradient(90deg,
      color-mix(in srgb, var(--n-950) 90%, transparent) 0%,
      color-mix(in srgb, var(--n-950) 62%, transparent) 52%,
      color-mix(in srgb, var(--n-950) 42%, transparent) 100%),
    linear-gradient(180deg, var(--n-950), transparent 15%, transparent 85%, var(--n-950));
}
.sec-shader .sec-inner { position: relative; z-index: 2; }
.sec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.sec-copy .lp-h2 { margin-bottom: 24px; }
.sec-copy .lp-lead { margin-bottom: 30px; }
.sec-points { display: grid; gap: 14px; }
.sec-points .p { display: flex; align-items: center; gap: 13px; font-size: 15px; color: var(--n-300); }
.sec-points .p .d { width: 6px; height: 6px; border-radius: 50%; background: var(--n-600); }
.metrics { background: var(--n-925); border: 1px solid var(--n-800); padding: 32px; display: grid; gap: 24px; }
.metric .mk { font-size: 13px; color: var(--n-500); margin: 0 0 6px; }
.metric .mv { font-size: 30px; font-weight: 300; color: var(--n-050); letter-spacing: -0.02em; }
.metric .mv.em { color: var(--n-100); }
.metric .ms { font-family: var(--font-mono); font-size: 11px; color: var(--n-600); margin-top: 4px; }
.metrics .div { height: 1px; background: var(--n-800); }

/* ---------- stats bar ---------- */
.statsbar { border-top: 1px solid var(--n-880); border-bottom: 1px solid var(--n-880); background: var(--n-925); padding: 58px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.stat { text-align: center; }
.stat .sv { font-size: clamp(34px, 4vw, 50px); font-weight: 300; color: var(--n-050); letter-spacing: -0.025em; }
.stat .sl { font-family: var(--font-mono); font-size: 11px; color: var(--n-600); text-transform: uppercase; letter-spacing: 0.12em; margin-top: 10px; }

/* ---------- final cta ---------- */
.lp-final { text-align: center; padding-top: 132px; padding-bottom: 132px; }
.lp-final h2 { font-size: clamp(34px, 5vw, 56px); font-weight: 400; letter-spacing: -0.03em; margin: 0 0 18px; }
.lp-final p { font-size: 19px; color: var(--n-400); max-width: 560px; margin: 0 auto 38px; line-height: 1.55; }
.lp-final .lp-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* reveal on scroll — GSAP ScrollTrigger drives all opacity + transform,
   no CSS transition needed here */
.rv { opacity: 0; transform: translateY(18px); }

@media (max-width: 900px) {
  .field-grid, .sec-grid { grid-template-columns: 1fr; gap: 48px; }
  .field-grid .phone-wrap { order: 2; }
  .pillars, .ucases { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
  .steps .rail { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 36px; }
}
@media (max-width: 600px) {
  .lp-wrap { padding: 0 22px; }
  .legal-grid, .scen-grid, .meta-grid { grid-template-columns: 1fr; }
  .meta-grid { grid-template-columns: repeat(2, 1fr); }
}