:root {
  --ink: #eef2f5;
  --muted: #9aa7b5;
  --dim: #667484;
  --night: #050913;
  --night-soft: #09111f;
  --panel: rgba(13, 24, 40, 0.72);
  --panel-solid: #0d1828;
  --line: rgba(164, 190, 209, 0.18);
  --line-strong: rgba(217, 184, 108, 0.45);
  --gold: #d9b86c;
  --gold-bright: #f1d48b;
  --cyan: #64c7ce;
  --cyan-soft: rgba(100, 199, 206, 0.16);
  --max: 1180px;
  --serif: Georgia, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 6rem; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 75% 7%, rgba(32, 96, 115, 0.16), transparent 28rem),
    radial-gradient(circle at 12% 38%, rgba(217, 184, 108, 0.06), transparent 25rem),
    var(--night);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.7;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.16;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, black, transparent 85%);
  z-index: -1;
}

a { color: inherit; }
p { margin: 0 0 1.15rem; }
h1, h2, h3 { margin: 0; font-family: var(--serif); font-weight: 400; line-height: 1.08; }
h2 { font-size: clamp(2.45rem, 5vw, 4.8rem); letter-spacing: -0.035em; }
h3 { font-size: 1.55rem; }

.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;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  transform: translateY(-150%);
  background: var(--gold-bright);
  color: #111;
  padding: .7rem 1rem;
  border-radius: .3rem;
  font-weight: 700;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  padding: .7rem clamp(1.25rem, 4vw, 4rem);
  border-bottom: 1px solid transparent;
  transition: background .25s ease, border-color .25s ease, backdrop-filter .25s ease;
}

.site-header.scrolled {
  background: rgba(5, 9, 19, .82);
  border-color: var(--line);
  backdrop-filter: blur(18px);
}

.brand { display: inline-flex; align-items: center; gap: .75rem; text-decoration: none; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 43px;
  height: 43px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--gold-bright);
  font-family: var(--serif);
  font-size: 1.8rem;
}
.brand-copy { display: flex; flex-direction: column; line-height: 1.15; }
.brand-copy strong { font-family: var(--serif); font-size: 1.05rem; font-weight: 400; }
.brand-copy small { margin-top: .18rem; color: var(--dim); font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; }

.primary-nav { display: flex; align-items: center; gap: clamp(1rem, 2.2vw, 2rem); }
.primary-nav a {
  position: relative;
  color: var(--muted);
  font-size: .82rem;
  letter-spacing: .08em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color .2s ease;
}
.primary-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -.55rem;
  height: 1px;
  background: var(--gold);
  transition: right .25s ease;
}
.primary-nav a:hover, .primary-nav a:focus-visible, .primary-nav a.active { color: var(--ink); }
.primary-nav a:hover::after, .primary-nav a:focus-visible::after, .primary-nav a.active::after { right: 0; }
.menu-button { display: none; }

.section-shell { width: min(var(--max), calc(100% - 2.5rem)); margin-inline: auto; padding: clamp(5.5rem, 10vw, 9rem) 0; }
.section-index {
  margin-bottom: 1.25rem;
  color: var(--gold);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .17em;
  text-transform: uppercase;
}
.section-heading { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(260px, .7fr); gap: 3rem; align-items: end; margin-bottom: 4rem; }
.section-heading > p { max-width: 34rem; margin: 0; color: var(--muted); }
.section-heading.compact { grid-template-columns: 1fr; }
.lead { color: var(--ink); font-family: var(--serif); font-size: clamp(1.35rem, 2vw, 1.8rem); line-height: 1.45; }

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 100svh;
  padding: 8rem clamp(1.25rem, 7vw, 7rem) 3.5rem;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  left: clamp(1.25rem, 7vw, 7rem);
  right: clamp(1.25rem, 7vw, 7rem);
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--line), transparent);
}
.hero-content { position: relative; z-index: 2; width: min(760px, 70%); }
.eyebrow { color: var(--gold); font-size: .78rem; font-weight: 700; letter-spacing: .19em; text-transform: uppercase; }
.hero h1 { margin: 1rem 0 1.5rem; font-size: clamp(3.9rem, 8.6vw, 8.6rem); letter-spacing: -.055em; }
.hero h1 span { color: transparent; -webkit-text-stroke: 1px rgba(238,242,245,.55); }
.hero-thesis { font-family: var(--serif); font-size: clamp(1.35rem, 2.3vw, 2rem); }
.hero-thesis strong { color: var(--gold-bright); font-weight: 400; }
.hero-intro { max-width: 43rem; color: var(--muted); font-size: 1.05rem; }
.hero-actions, .invitation-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .7rem;
  min-height: 50px;
  padding: .72rem 1.2rem;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .09em;
  text-decoration: none;
  text-transform: uppercase;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button-primary { background: var(--gold-bright); color: #111722; }
.button-primary:hover, .button-primary:focus-visible { background: #ffe5a3; }
.button-quiet { border-color: var(--line); color: var(--muted); }
.button-quiet:hover, .button-quiet:focus-visible, .button-outline:hover, .button-outline:focus-visible { border-color: var(--gold); color: var(--ink); }
.button-outline { border-color: rgba(255,255,255,.27); }
.hero-meta { display: flex; flex-wrap: wrap; gap: .6rem 1.8rem; margin-top: 3.2rem; color: var(--dim); font-size: .72rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }

.hero-field {
  position: absolute;
  top: 50%;
  right: -5vw;
  width: min(48vw, 680px);
  aspect-ratio: 1;
  transform: translateY(-50%);
  display: grid;
  place-items: center;
}
.psi-glyph {
  position: relative;
  z-index: 2;
  color: var(--gold-bright);
  font-family: var(--serif);
  font-size: clamp(10rem, 27vw, 25rem);
  line-height: 1;
  text-shadow: 0 0 60px rgba(217,184,108,.2);
}
.orbit { position: absolute; border: 1px solid var(--line); border-radius: 50%; }
.orbit-one { inset: 4%; animation: spin 34s linear infinite; border-style: dashed; }
.orbit-two { inset: 18%; border-color: rgba(100,199,206,.22); animation: spinReverse 22s linear infinite; }
.orbit-three { inset: 31%; border-color: var(--line-strong); }
.orbit-one::before, .orbit-two::before {
  content: "";
  position: absolute;
  top: 50%;
  left: -4px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 16px var(--cyan);
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes spinReverse { to { transform: rotate(-360deg); } }

.statement { border-bottom: 1px solid var(--line); }
.statement-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(3rem, 8vw, 8rem); align-items: start; }
.statement-copy { max-width: 37rem; color: var(--muted); }

.continuum { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); }
.continuum-card { position: relative; min-height: 350px; padding: 1.5rem; border-right: 1px solid var(--line); background: linear-gradient(160deg, rgba(255,255,255,.025), transparent 60%); transition: background .25s ease, transform .25s ease; }
.continuum-card:last-child { border-right: 0; }
.continuum-card:hover { z-index: 2; background: var(--panel-solid); transform: translateY(-5px); }
.card-number { color: var(--dim); font-size: .73rem; letter-spacing: .12em; }
.continuum-card h3 { margin: 4.5rem 0 1.1rem; font-size: 2.15rem; }
.continuum-card p { color: var(--muted); font-size: .94rem; }
.card-term { position: absolute; left: 1.5rem; bottom: 1.5rem; color: var(--gold); font-size: .72rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.formula-strip { display: grid; grid-template-columns: auto 1fr auto 1fr auto 1fr auto; align-items: center; gap: 1rem; margin-top: 2.3rem; color: var(--muted); font-family: var(--serif); font-size: clamp(1.2rem, 2vw, 1.7rem); }
.formula-strip > span:first-child { color: var(--gold-bright); font-size: 2.2rem; }
.formula-strip i { height: 1px; background: linear-gradient(90deg, var(--line-strong), var(--cyan)); }

.principles { border-top: 1px solid var(--line); }
.principle-list { list-style: none; margin: 2rem 0 0; padding: 0; border-top: 1px solid var(--line); }
.principle-list li { display: grid; grid-template-columns: 70px minmax(0, 1fr); gap: 2rem; padding: 2rem 0; border-bottom: 1px solid var(--line); }
.principle-list li > span { color: var(--gold); font-size: .74rem; font-weight: 800; letter-spacing: .12em; }
.principle-list h3 { margin-bottom: .55rem; font-size: clamp(1.35rem, 2.4vw, 2rem); }
.principle-list p { max-width: 56rem; margin: 0; color: var(--muted); }

.frontiers { width: 100%; max-width: none; padding-inline: max(1.25rem, calc((100vw - var(--max)) / 2)); background: rgba(9,17,31,.62); border-block: 1px solid var(--line); }
.frontier-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1rem; }
.frontier-card { grid-column: span 2; min-height: 310px; padding: 1.6rem; border: 1px solid var(--line); background: rgba(5,9,19,.45); }
.frontier-card.featured { grid-column: span 3; min-height: 360px; background: linear-gradient(145deg, rgba(100,199,206,.12), rgba(217,184,108,.055)); border-color: rgba(100,199,206,.25); }
.frontier-card.featured + .frontier-card { grid-column: span 3; }
.card-label { color: var(--gold); font-size: .7rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.frontier-card h3 { margin: 2.2rem 0 1.2rem; font-size: clamp(1.7rem, 2.7vw, 2.6rem); }
.frontier-card p:not(.card-label) { color: var(--muted); font-size: .94rem; }
.frontier-card a, .text-link, .spring-note a { display: inline-flex; gap: .45rem; color: var(--cyan); font-size: .78rem; font-weight: 800; letter-spacing: .08em; text-decoration: none; text-transform: uppercase; }
.frontier-card a:hover, .frontier-card a:focus-visible, .text-link:hover, .text-link:focus-visible, .spring-note a:hover, .spring-note a:focus-visible { color: #9ce8ed; }

.water { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(3rem, 9vw, 8rem); align-items: center; }
.water-visual { position: relative; width: min(100%, 460px); aspect-ratio: 1; display: grid; place-items: center; margin-inline: auto; }
.water-core { position: relative; z-index: 2; display: grid; place-items: center; width: 150px; height: 150px; border: 1px solid var(--line-strong); border-radius: 50%; background: radial-gradient(circle, rgba(217,184,108,.15), rgba(5,9,19,.88) 65%); color: var(--gold-bright); font-family: var(--serif); font-size: 2.8rem; box-shadow: 0 0 80px rgba(100,199,206,.11); }
.water-core sub { font-size: .48em; }
.water-ring { position: absolute; border: 1px solid rgba(100,199,206,.22); border-radius: 50%; }
.ring-a { inset: 10%; }
.ring-b { inset: 24%; border-style: dashed; }
.ring-c { inset: 38%; border-color: var(--line-strong); }
.water-node { position: absolute; width: 10px; height: 10px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 18px var(--cyan); }
.node-a { top: 11%; left: 48%; }.node-b { right: 17%; top: 46%; }.node-c { bottom: 18%; left: 23%; }.node-d { top: 29%; left: 17%; }
.water-copy h2 { margin-bottom: 1.8rem; }
.water-copy > p:not(.section-index):not(.lead) { color: var(--muted); }
blockquote { margin: 2rem 0; padding: .3rem 0 .3rem 1.5rem; border-left: 1px solid var(--gold); color: var(--gold-bright); font-family: var(--serif); font-size: clamp(1.18rem, 2vw, 1.55rem); line-height: 1.5; }

.spring { border-top: 1px solid var(--line); }
.spring-layout { display: grid; grid-template-columns: 1.2fr .8fr; gap: clamp(2.5rem, 7vw, 7rem); }
.spring-origin { color: var(--muted); font-size: 1.04rem; }
.drop-cap::first-letter { float: left; margin: .08rem .65rem 0 0; color: var(--gold-bright); font-family: var(--serif); font-size: 4.8rem; line-height: .78; }
.spring-note { align-self: start; padding: 2rem; border: 1px solid var(--line-strong); background: linear-gradient(145deg, rgba(217,184,108,.065), rgba(9,17,31,.76)); }
.spring-note > span { color: var(--gold); font-size: .72rem; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.spring-note p { margin: 1rem 0 1.5rem; color: var(--muted); }

.development {
  width: 100%;
  max-width: none;
  padding-inline: max(1.25rem, calc((100vw - var(--max)) / 2));
  background:
    radial-gradient(circle at 84% 22%, rgba(217,184,108,.08), transparent 25rem),
    linear-gradient(145deg, rgba(13,24,40,.96), rgba(5,9,19,.98));
  border-block: 1px solid var(--line);
}
.development-layout { display: grid; grid-template-columns: .86fr 1.14fr; gap: clamp(3rem, 8vw, 7rem); align-items: start; }
.development-vision > p:not(.lead) { color: var(--muted); }
.development-detail { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--line); color: var(--dim) !important; font-size: .84rem; }
.development-program { border-top: 1px solid var(--line); }
.development-program article { display: grid; grid-template-columns: 48px minmax(0,1fr); gap: 1.2rem; padding: 1.45rem 0; border-bottom: 1px solid var(--line); }
.development-program article > span { padding-top: .22rem; color: var(--gold); font-size: .72rem; font-weight: 800; letter-spacing: .12em; }
.development-program h3 { margin-bottom: .45rem; font-size: clamp(1.35rem, 2vw, 1.75rem); }
.development-program p { margin: 0; color: var(--muted); font-size: .92rem; }
.development-callout { display: grid; grid-template-columns: 1.05fr 1fr auto; gap: clamp(1.5rem, 4vw, 3rem); align-items: center; margin-top: 4.5rem; padding: clamp(1.6rem, 3.6vw, 2.6rem); border: 1px solid var(--line-strong); background: rgba(5,9,19,.6); }
.development-callout .card-label { margin-bottom: .8rem; }
.development-callout h3 { font-size: clamp(1.55rem, 2.7vw, 2.35rem); }
.development-opportunity > p { margin: 0; color: var(--muted); font-size: .94rem; }
.development-opportunity .profit-potential { margin-top: 1rem; color: var(--ink); font-family: var(--serif); font-size: 1.06rem; line-height: 1.5; }
.development-actions { display: flex; flex-direction: column; gap: .7rem; min-width: 13.5rem; }

.research { width: 100%; max-width: none; padding-inline: max(1.25rem, calc((100vw - var(--max)) / 2)); background: var(--night-soft); border-block: 1px solid var(--line); }
.research-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.research-grid article { min-height: 255px; padding: 1.8rem; background: var(--night-soft); }
.research-grid article > span { color: var(--gold); font-size: .73rem; font-weight: 800; }
.research-grid h3 { margin: 2.4rem 0 .8rem; font-size: 1.7rem; }
.research-grid p { color: var(--muted); font-size: .94rem; }
.research-ethics { max-width: 58rem; margin: 2.3rem 0 0; color: var(--dim); font-size: .82rem; }

.paper-list { border-top: 1px solid var(--line); }
.paper-row { display: grid; grid-template-columns: 90px minmax(280px, 1.5fr) minmax(210px, .7fr) 32px; gap: 1.2rem; align-items: center; min-height: 112px; padding: 1rem .3rem; border-bottom: 1px solid var(--line); text-decoration: none; transition: background .2s ease, padding .2s ease; }
.paper-row:hover, .paper-row:focus-visible { padding-inline: 1rem; background: rgba(100,199,206,.055); }
.paper-year, .paper-doi { color: var(--dim); font-size: .78rem; letter-spacing: .08em; }
.paper-title { display: flex; flex-direction: column; }
.paper-title strong { font-family: var(--serif); font-size: 1.35rem; font-weight: 400; }
.paper-title small { margin-top: .25rem; color: var(--muted); }
.paper-arrow { color: var(--gold); font-size: 1.25rem; }

.invitation { position: relative; padding: clamp(6rem, 12vw, 11rem) 1.25rem; overflow: hidden; background: radial-gradient(circle at 70% 45%, rgba(100,199,206,.12), transparent 28rem), linear-gradient(135deg, #101c2c, #070c16 65%); border-bottom: 1px solid var(--line); }
.invitation::before { content: "Ψ"; position: absolute; right: -2vw; bottom: -15rem; color: rgba(217,184,108,.045); font-family: var(--serif); font-size: min(52vw, 45rem); line-height: 1; }
.invitation-inner { position: relative; z-index: 2; width: min(920px, 100%); margin-inline: auto; text-align: center; }
.invitation h2 span { color: var(--gold-bright); }
.invitation p:not(.section-index) { max-width: 50rem; margin: 2rem auto 0; color: var(--muted); font-size: 1.05rem; }
.invitation-actions { justify-content: center; }
.contact-links { display: flex; flex-wrap: wrap; justify-content: center; gap: .8rem; margin-top: 1rem; }
.contact-links a { display: flex; min-width: min(100%, 18rem); flex-direction: column; gap: .3rem; padding: 1rem 1.2rem; border: 1px solid var(--line-strong); color: var(--ink); text-align: left; text-decoration: none; transition: border-color .2s ease, background .2s ease, transform .2s ease; }
.contact-links a:hover, .contact-links a:focus-visible { border-color: var(--cyan); background: rgba(100,199,206,.07); transform: translateY(-2px); }
.contact-links span { color: var(--gold); font-size: .7rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.contact-links strong { font-size: .95rem; font-weight: 600; }

.site-footer { display: grid; grid-template-columns: auto 1fr auto; gap: 1.2rem; align-items: center; padding: 2.2rem clamp(1.25rem, 5vw, 4rem); color: var(--muted); }
.footer-mark { color: var(--gold-bright); font-family: var(--serif); font-size: 2.6rem; }
.site-footer strong { color: var(--ink); font-family: var(--serif); font-size: 1.05rem; font-weight: 400; }
.site-footer p { margin: .15rem 0 0; font-size: .78rem; }
.footer-meta { display: flex; gap: 1.2rem; font-size: .74rem; letter-spacing: .08em; text-transform: uppercase; }
.footer-meta a { color: var(--gold); text-decoration: none; }

@media (max-width: 980px) {
  .hero-content { width: min(760px, 82%); }
  .hero-field { right: -16vw; opacity: .58; }
  .continuum { grid-template-columns: repeat(2, 1fr); }
  .continuum-card:nth-child(2) { border-right: 0; }
  .continuum-card:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .frontier-card, .frontier-card.featured, .frontier-card.featured + .frontier-card { grid-column: span 3; }
  .paper-row { grid-template-columns: 70px minmax(0, 1fr) 30px; }
  .paper-doi { display: none; }
  .development-callout { grid-template-columns: 1fr 1fr; }
  .development-actions { grid-column: 1 / -1; flex-direction: row; }
}

@media (max-width: 780px) {
  html { scroll-padding-top: 5rem; }
  .site-header { min-height: 70px; }
  .menu-button { display: grid; gap: 5px; width: 44px; height: 44px; place-content: center; border: 1px solid var(--line); background: rgba(5,9,19,.75); color: var(--ink); }
  .menu-button span:not(.sr-only) { display: block; width: 20px; height: 1px; background: currentColor; transition: transform .2s ease, opacity .2s ease; }
  .menu-button[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-button[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .primary-nav { position: absolute; top: calc(100% + 1px); left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: .65rem 1.25rem 1.2rem; background: rgba(5,9,19,.97); border-bottom: 1px solid var(--line); }
  .primary-nav.open { display: flex; }
  .primary-nav a { padding: .85rem 0; }
  .primary-nav a::after { bottom: .5rem; }
  .hero { min-height: 920px; align-items: flex-start; padding-top: 9.2rem; }
  .hero-content { width: 100%; }
  .hero h1 { font-size: clamp(3.6rem, 17vw, 6.5rem); }
  .hero-field { top: auto; right: -28vw; bottom: -3rem; width: 100vw; transform: none; opacity: .35; }
  .hero-meta { margin-top: 2.4rem; }
  .section-heading, .statement-grid, .water, .spring-layout, .development-layout { grid-template-columns: 1fr; }
  .section-heading { gap: 1.5rem; margin-bottom: 3rem; }
  .statement-grid { gap: 2.2rem; }
  .water-visual { order: 2; max-width: 390px; }
  .research-grid { grid-template-columns: 1fr; }
  .development-callout { grid-template-columns: 1fr; }
  .development-actions { grid-column: auto; }
  .site-footer { grid-template-columns: auto 1fr; }
  .footer-meta { grid-column: 2; flex-wrap: wrap; }
}

@media (max-width: 560px) {
  .section-shell { width: min(100% - 2rem, var(--max)); padding-block: 5rem; }
  h2 { font-size: clamp(2.35rem, 12vw, 3.5rem); }
  .brand-copy small { display: none; }
  .hero { min-height: 850px; padding-inline: 1rem; }
  .hero h1 { font-size: clamp(3.35rem, 18vw, 5.25rem); }
  .hero h1 br { display: none; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .development-actions { flex-direction: column; }
  .button { width: 100%; }
  .hero-meta { display: grid; gap: .5rem; }
  .continuum { grid-template-columns: 1fr; }
  .continuum-card { min-height: 290px; border-right: 0; border-bottom: 1px solid var(--line); }
  .continuum-card:nth-child(3) { border-bottom: 1px solid var(--line); }
  .continuum-card:last-child { border-bottom: 0; }
  .formula-strip { grid-template-columns: 1fr; justify-items: center; gap: .4rem; }
  .formula-strip i { width: 1px; height: 26px; background: linear-gradient(var(--line-strong), var(--cyan)); }
  .frontier-grid { grid-template-columns: 1fr; }
  .frontier-card, .frontier-card.featured, .frontier-card.featured + .frontier-card { grid-column: auto; min-height: 0; }
  .paper-row { grid-template-columns: 1fr 26px; gap: .7rem; padding-block: 1.35rem; }
  .paper-year { grid-column: 1; }
  .paper-title { grid-column: 1; }
  .paper-arrow { grid-column: 2; grid-row: 1 / span 2; align-self: center; }
  .site-footer { grid-template-columns: 1fr; text-align: center; }
  .footer-mark { margin-inline: auto; }
  .footer-meta { grid-column: 1; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}