:root {
  --ink: #07111f;
  --ink-2: #0d1b2d;
  --paper: #f5f7f4;
  --white: #ffffff;
  --mint: #5ce1b9;
  --mint-soft: #baf4e2;
  --blue: #3a7bff;
  --line: rgba(7, 17, 31, 0.14);
  --muted: #536170;
  --mono: "DM Mono", monospace;
  --sans: "Manrope", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.6; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.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-link { position: fixed; left: 1rem; top: -5rem; z-index: 1000; background: var(--mint); color: var(--ink); padding: .7rem 1rem; font-weight: 800; }
.skip-link:focus { top: 1rem; }

.site-header { height: 82px; display: flex; align-items: center; justify-content: space-between; padding: 0 clamp(1.2rem, 5vw, 5rem); border-bottom: 1px solid rgba(255,255,255,.12); color: var(--white); position: absolute; inset: 0 0 auto 0; z-index: 20; }
.brand { display: inline-flex; align-items: center; gap: .8rem; font-size: .9rem; letter-spacing: -.01em; font-weight: 500; }
.brand b { font-weight: 800; }
.brand-mark { width: 30px; height: 30px; border: 1px solid var(--mint); display: grid; place-items: center; transform: rotate(45deg); }
.brand-mark i { width: 10px; height: 10px; background: var(--mint); display: block; }
.site-nav { display: flex; align-items: center; gap: 2rem; font-size: .86rem; font-weight: 600; }
.site-nav > a:not(.nav-cta) { opacity: .72; transition: opacity .2s; }
.site-nav > a:not(.nav-cta):hover { opacity: 1; }
.nav-cta { border: 1px solid rgba(255,255,255,.35); padding: .62rem 1rem; }
.menu-toggle { display: none; background: none; border: 0; padding: .5rem; }

.hero { min-height: 780px; background: var(--ink); color: var(--white); padding: 160px clamp(1.2rem, 7vw, 8rem) 90px; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: clamp(3rem, 7vw, 7rem); position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; width: 540px; height: 540px; border-radius: 50%; background: rgba(58,123,255,.18); filter: blur(100px); top: -220px; right: 12%; }
.hero::after { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px); background-size: 54px 54px; mask-image: linear-gradient(to right, transparent 5%, black 55%, transparent 100%); pointer-events: none; }
.hero-copy, .proof-console { position: relative; z-index: 2; }
.eyebrow { display: flex; align-items: center; gap: .65rem; font: 500 .76rem/1 var(--mono); text-transform: uppercase; letter-spacing: .14em; color: var(--mint); margin: 0 0 1.8rem; }
.eyebrow span { width: 24px; height: 1px; background: currentColor; }
h1 { font-size: clamp(3.4rem, 6.4vw, 7rem); line-height: .98; letter-spacing: -.065em; margin: 0; max-width: 900px; font-weight: 700; }
h1 em, .closing h2 em { color: var(--mint); font-style: normal; }
.hero-lede { max-width: 630px; color: #afbac8; font-size: clamp(1.05rem, 1.5vw, 1.25rem); line-height: 1.7; margin: 2rem 0 2.5rem; }
.hero-actions { display: flex; align-items: center; gap: 1.8rem; flex-wrap: wrap; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 1.4rem; padding: .95rem 1.2rem; font-weight: 800; font-size: .9rem; border: 1px solid transparent; transition: transform .2s, background .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--mint); color: var(--ink); }
.button-primary:hover { background: #75ebc8; }
.text-link { font-size: .88rem; color: #cad2dc; border-bottom: 1px solid rgba(255,255,255,.3); padding-bottom: .25rem; }

.proof-console { background: rgba(11,28,46,.9); border: 1px solid rgba(92,225,185,.34); box-shadow: 0 36px 80px rgba(0,0,0,.32); backdrop-filter: blur(16px); transform: rotate(1deg); }
.console-head, .console-foot { display: flex; justify-content: space-between; align-items: center; padding: .85rem 1.1rem; font: 500 .66rem/1 var(--mono); letter-spacing: .09em; color: #7e8c9b; border-bottom: 1px solid rgba(255,255,255,.1); }
.verified { color: var(--mint); display: flex; align-items: center; gap: .45rem; }
.verified i { width: 6px; height: 6px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 12px var(--mint); }
.console-score { padding: 1.7rem; display: flex; align-items: end; justify-content: space-between; border-bottom: 1px solid rgba(255,255,255,.1); }
.meta { font: 500 .65rem/1 var(--mono); letter-spacing: .12em; color: #758698; }
.console-score strong { display: block; margin-top: .65rem; font-size: 1.3rem; }
.console-score strong b { color: var(--mint); padding: 0 .45rem; }
.delta { color: var(--mint); font: 500 3.1rem/1 var(--mono); letter-spacing: -.08em; }
.delta span { font-size: .9rem; letter-spacing: 0; }
.chain-item { display: grid; grid-template-columns: 34px 1fr auto; gap: .8rem; align-items: center; padding: 1rem 1.2rem; border-bottom: 1px solid rgba(255,255,255,.08); position: relative; }
.chain-item.active { background: rgba(92,225,185,.07); }
.chain-item.active::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: var(--mint); }
.chain-index { font: 400 .68rem var(--mono); color: #5e7082; }
.chain-item small { font: 500 .6rem var(--mono); letter-spacing: .1em; color: #77899b; }
.chain-item p { margin: .16rem 0 0; font-size: .82rem; color: #dbe3eb; }
.chain-status { font: 500 .56rem var(--mono); color: var(--mint); border: 1px solid rgba(92,225,185,.22); padding: .33rem .42rem; }
.console-foot { border: 0; font-size: .58rem; }

.signal-bar { min-height: 74px; background: var(--mint); color: var(--ink); display: flex; align-items: center; justify-content: center; gap: clamp(1rem, 3vw, 3rem); font: 500 .72rem var(--mono); letter-spacing: .15em; padding: 1rem; flex-wrap: wrap; }
.signal-bar i { width: 5px; height: 5px; background: var(--ink); transform: rotate(45deg); }
.section { padding: clamp(5rem, 10vw, 9rem) clamp(1.2rem, 7vw, 8rem); }
.section-number { color: var(--blue); font: 500 .72rem/1 var(--mono); letter-spacing: .12em; margin: 0 0 1.6rem; }
.section-intro { display: grid; grid-template-columns: .65fr 1.4fr 1fr; gap: 3rem; align-items: start; margin-bottom: 4.5rem; }
.section-intro .section-number { margin-top: .65rem; }
.section h2 { font-size: clamp(2.4rem, 4.3vw, 4.9rem); line-height: 1.02; letter-spacing: -.055em; margin: 0; font-weight: 700; }
.section-intro > p:last-child { color: var(--muted); max-width: 480px; margin: .2rem 0 0; }
.method { background: var(--paper); }
.method-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.method-card { min-height: 460px; padding: 2rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); position: relative; }
.method-card .step { position: absolute; right: 1.5rem; top: 1.4rem; font: 500 .7rem var(--mono); color: #83909d; }
.method-icon { height: 100px; margin: 1.3rem 0 2rem; position: relative; }
.method-icon.baseline { display: flex; align-items: end; gap: 8px; }
.method-icon.baseline i { width: 13px; background: var(--ink); display: block; }
.method-icon.baseline i:nth-child(1) { height: 32px; opacity: .25; }.method-icon.baseline i:nth-child(2) { height: 58px; opacity: .55; }.method-icon.baseline i:nth-child(3) { height: 88px; }
.method-icon.action i:first-child { position: absolute; left: 0; top: 47px; width: 82px; height: 2px; background: var(--ink); transform: rotate(-28deg); transform-origin: left; }
.method-icon.action i:last-child { position: absolute; left: 70px; top: 7px; width: 14px; height: 14px; border-top: 2px solid var(--ink); border-right: 2px solid var(--ink); transform: rotate(16deg); }
.method-icon.verify i { display: block; width: 70px; height: 38px; border-left: 3px solid var(--mint); border-bottom: 3px solid var(--mint); transform: rotate(-45deg); margin: 10px 0 0 13px; }
.method-card h3 { margin: 0 0 .8rem; font-size: 1.35rem; letter-spacing: -.03em; }
.method-card > p { color: var(--muted); margin: 0; }
.method-card ul { list-style: none; padding: 0; margin: 2rem 0 0; display: grid; gap: .55rem; font: 500 .7rem var(--mono); letter-spacing: .04em; text-transform: uppercase; }
.method-card li::before { content: "+"; color: var(--blue); margin-right: .7rem; }

.proof-section { background: var(--ink-2); color: var(--white); }
.proof-heading { display: grid; grid-template-columns: .65fr 2.4fr; gap: 3rem; margin-bottom: 5rem; }
.proof-heading .section-number { margin-top: .65rem; color: var(--mint); }
.proof-layout { display: grid; grid-template-columns: 1fr 1.35fr; gap: 7vw; }
.proof-statement > p { color: #a7b3c1; max-width: 480px; font-size: 1.1rem; }
blockquote { margin: 3rem 0 0; padding: 1.8rem 0 1.8rem 1.5rem; border-left: 2px solid var(--mint); font-size: clamp(1.5rem, 2.5vw, 2.3rem); line-height: 1.2; letter-spacing: -.04em; }
.evidence-list { border-top: 1px solid rgba(255,255,255,.15); }
.evidence-row { display: grid; grid-template-columns: 46px 1fr; gap: 1.2rem; padding: 1.65rem 0; border-bottom: 1px solid rgba(255,255,255,.15); }
.evidence-row > span { color: var(--mint); font: 500 .65rem var(--mono); padding-top: .4rem; }
.evidence-row h3 { margin: 0; font-size: 1.25rem; }
.evidence-row p { margin: .3rem 0 0; color: #91a0af; }

.principles { background: #e8edeb; }
.principle-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.principle-grid article { padding: 2rem; min-height: 240px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.principle-grid span { color: var(--blue); font: 500 .7rem var(--mono); }
.principle-grid h3 { margin: 3rem 0 .7rem; font-size: 1.3rem; }
.principle-grid p { margin: 0; color: var(--muted); max-width: 530px; }

.closing { background: var(--blue); color: var(--white); padding: clamp(5rem, 11vw, 10rem) clamp(1.2rem, 7vw, 8rem); position: relative; overflow: hidden; }
.closing-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.11) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.11) 1px, transparent 1px); background-size: 68px 68px; mask-image: linear-gradient(to right, transparent, black); }
.closing-content { max-width: 920px; position: relative; z-index: 1; }
.closing .eyebrow { color: var(--white); }
.closing h2 { font-size: clamp(2.7rem, 5.3vw, 6rem); line-height: 1.02; letter-spacing: -.06em; margin: 0; }
.closing h2 em { color: var(--ink); }
.closing-content > p:not(.eyebrow) { font-size: 1.15rem; margin: 2rem 0; max-width: 590px; color: #e7efff; }
.button-light { background: var(--white); color: var(--ink); }
.site-footer { min-height: 110px; background: var(--ink); color: #8493a4; padding: 1.6rem clamp(1.2rem, 5vw, 5rem); display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 2.5rem; font-size: .75rem; }
.footer-brand { color: var(--white); }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease, transform .65s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; min-height: auto; padding-top: 145px; }
  .proof-console { max-width: 700px; }
  .section-intro { grid-template-columns: 1fr 2fr; }
  .section-intro > p:last-child { grid-column: 2; }
  .method-grid { grid-template-columns: 1fr; }
  .method-card { min-height: 350px; }
  .proof-heading { grid-template-columns: 1fr; gap: 1rem; }
  .proof-layout { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .site-header { height: 70px; }
  .menu-toggle { display: grid; gap: 5px; z-index: 22; }
  .menu-toggle > span:not(.sr-only) { width: 24px; height: 1px; background: white; display: block; }
  .site-nav { position: fixed; inset: 0; background: var(--ink); display: flex; flex-direction: column; justify-content: center; align-items: flex-start; padding: 2rem; font-size: 1.5rem; transform: translateX(100%); transition: transform .3s ease; }
  .site-nav.open { transform: translateX(0); }
  .nav-cta { margin-top: 1rem; }
  .hero { padding-left: 1.2rem; padding-right: 1.2rem; }
  h1 { font-size: clamp(3.2rem, 15vw, 5rem); }
  .proof-console { transform: none; }
  .chain-status { display: none; }
  .chain-item { grid-template-columns: 28px 1fr; }
  .signal-bar { justify-content: flex-start; gap: .8rem; font-size: .61rem; }
  .section-intro { display: block; }
  .section-intro h2 { margin-bottom: 1.5rem; }
  .section-intro > p:last-child { margin-top: 0; }
  .principle-grid { grid-template-columns: 1fr; }
  .site-footer { grid-template-columns: 1fr; gap: .7rem; padding-top: 2.5rem; padding-bottom: 2.5rem; }
  .site-footer p { margin: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}