/* ============================================================
   The VIBE — Vertically Integrated Behavioral Engagement
   Shared design system
   Palette + type derived from brand: crimson #A1262E / charcoal #5F5F61
   ============================================================ */

@import url("https://fonts.googleapis.com/css2?family=Archivo:wght@500;600;700;800;900&family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;450;500;600;700&display=swap");

:root {
  --crimson: #a1262e;
  --crimson-bright: #be2130;
  --crimson-deep: #5f111c;
  --charcoal: #5f5f61;
  --ink: #161519;
  --ink-2: #201f24;
  --paper: #f2f1ee;
  --paper-2: #e9e7e1;
  --paper-3: #dfdcd4;
  --line: rgba(22, 21, 25, 0.12);
  --line-strong: rgba(22, 21, 25, 0.24);
  --line-light: rgba(255, 255, 255, 0.14);
  --white: #fbfaf8;

  --font-display: "Archivo", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --maxw: 1200px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 14px;
  --radius-lg: 22px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
::selection {
  background: var(--crimson);
  color: #fff;
}

/* ---------- Typography ---------- */
h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.02em;
}
.h-xl {
  font-size: clamp(2.9rem, 7vw, 6.2rem);
  letter-spacing: -0.035em;
  line-height: 0.96;
}
.h-lg {
  font-size: clamp(2.1rem, 4.6vw, 3.9rem);
  letter-spacing: -0.03em;
  line-height: 1;
}
.h-md {
  font-size: clamp(1.5rem, 2.8vw, 2.3rem);
  letter-spacing: -0.02em;
}
.h-sm {
  font-size: clamp(1.15rem, 1.8vw, 1.4rem);
  letter-spacing: -0.01em;
  font-weight: 700;
}
p {
  max-width: 62ch;
}
.lede {
  font-size: clamp(1.08rem, 1.5vw, 1.32rem);
  line-height: 1.55;
  color: #3a393f;
  font-weight: 450;
}

/* mono eyebrow / label */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--crimson);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
}
.eyebrow::before {
  content: "";
  width: 14px;
  height: 8px;
  flex: none;
  background:
    linear-gradient(
      45deg,
      transparent 45%,
      var(--crimson) 45% 55%,
      transparent 55%
    ),
    linear-gradient(
      -45deg,
      transparent 45%,
      var(--crimson) 45% 55%,
      transparent 55%
    );
  background-size: 8px 8px;
  background-position:
    0 0,
    6px 0;
  background-repeat: no-repeat;
  transform: translateY(-1px);
}
.mono {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

/* ---------- Layout ---------- */
.wrap {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section {
  padding-block: clamp(64px, 9vw, 128px);
}
.section-tight {
  padding-block: clamp(44px, 6vw, 80px);
}
.ink {
  background: var(--ink);
  color: #edecea;
}
.ink .lede {
  color: #b9b7bd;
}
.ink .eyebrow {
  color: #e8a9ab;
}
.ink h1,
.ink h2,
.ink h3,
.ink h4 {
  color: #f4f3f1;
}
.stack > * + * {
  margin-top: 1.1rem;
}
.center {
  text-align: center;
}
.measure {
  max-width: 52ch;
}
.measure-wide {
  max-width: 64ch;
}

.grid {
  display: grid;
  gap: clamp(18px, 2.2vw, 30px);
}
.g-2 {
  grid-template-columns: repeat(2, 1fr);
}
.g-3 {
  grid-template-columns: repeat(3, 1fr);
}
.g-4 {
  grid-template-columns: repeat(4, 1fr);
}
@media (max-width: 900px) {
  .g-3,
  .g-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 620px) {
  .g-2,
  .g-3,
  .g-4 {
    grid-template-columns: 1fr;
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.98rem;
  padding: 0.86em 1.5em;
  border-radius: 100px;
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    transform 0.35s var(--ease),
    background 0.3s,
    color 0.3s,
    border-color 0.3s;
  will-change: transform;
  line-height: 1;
}
.btn svg {
  width: 16px;
  height: 16px;
  transition: transform 0.35s var(--ease);
}
.btn-primary {
  background: var(--crimson);
  color: #fff;
}
.btn-primary:hover {
  background: var(--crimson-bright);
  transform: translateY(-2px);
}
.btn-primary:hover svg {
  transform: translateX(3px);
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  border-color: var(--ink);
  transform: translateY(-2px);
}
.ink .btn-ghost {
  color: #f4f3f1;
  border-color: var(--line-light);
}
.ink .btn-ghost:hover {
  border-color: #f4f3f1;
}
.btn-lg {
  padding: 1.05em 1.9em;
  font-size: 1.05rem;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 60;
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s;
}
.nav-inner {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 12px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  display: flex;
  align-items: center;
}
.brand img {
  height: 65px;
  width: auto;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(.65rem, 1.5vw, 2rem);
}
.nav-links a {
  font-size: 0.94rem;
  font-weight: 500;
  color: #33323a;
  position: relative;
  padding: 0.42em 0.78em;
  border-radius: 100px;
  transition:
    color 0.25s,
    background 0.25s;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0.78em;
  right: 0.78em;
  bottom: 0.18em;
  height: 2px;
  background: var(--crimson);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav-links a:hover {
  color: var(--ink);
}
.nav-links a:hover::after {
  transform: scaleX(1);
}
.nav-links a.active {
  color: var(--crimson-deep);
  background: rgba(161, 38, 46, 0.1);
  font-weight: 600;
}
.nav-links a.active::after {
  transform: scaleX(0);
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.nav-toggle {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  width: 30px;
  height: 22px;
  position: relative;
}
.nav-toggle span {
  position: absolute;
  left: 0;
  height: 2px;
  width: 100%;
  background: var(--ink);
  transition: 0.3s var(--ease);
}
.nav-toggle span:nth-child(1) {
  top: 0;
}
.nav-toggle span:nth-child(2) {
  top: 10px;
}
.nav-toggle span:nth-child(3) {
  top: 20px;
}
.nav-toggle.open span:nth-child(1) {
  top: 10px;
  transform: rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
  top: 10px;
  transform: rotate(-45deg);
}
@media (max-width: 860px) {
  .nav-links {
    position: fixed;
    inset: 63px 0 auto 0;
    flex-direction: column;
    background: var(--paper);
    padding: 24px var(--gutter) 34px;
    gap: 1.3rem;
    align-items: flex-start;
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%);
    transition: transform 0.4s var(--ease);
    box-shadow: 0 24px 40px -30px rgba(0, 0, 0, 0.4);
  }
  .nav-links.open {
    transform: translateY(0);
  }
  .nav-links a {
    font-size: 1.1rem;
    padding: 0.42em 0.7em;
  }
  .nav-cta .btn {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(32px, 5vw, 68px) clamp(40px, 6vw, 84px);
}
.nav + header.section {
  padding-top: clamp(36px, 5vw, 64px);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(20px, 3vw, 44px);
  align-items: center;
}
@media (max-width: 940px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}
.hero h1 {
  margin: 0.5rem 0 1.1rem;
}
.hero .accent {
  color: var(--crimson);
}
.hero-cta {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-top: 1.8rem;
}
.hero-sub {
  margin-top: 2.4rem;
  display: flex;
  gap: 1.6rem;
  flex-wrap: wrap;
  align-items: center;
}
.hero-sub .mono {
  color: var(--charcoal);
}
.hero-viz {
  position: relative;
  aspect-ratio: 1/1;
  max-width: 570px;
  width: 100%;
  margin-inline: auto;
  align-self: center;
}
@media (max-width: 940px) {
  .hero-viz {
    max-width: 460px;
    margin-top: 4px;
  }
}
@media (min-width: 941px) and (max-height: 1050px) {
  .hero {
    padding-top: clamp(24px, 3.5vw, 46px);
  }
  .hero-viz {
    max-width: min(530px, 52vh);
  }
}
@media (max-width: 620px) {
  .nav-inner {
    padding-block: 10px;
  }
  .brand img {
    height: 34px;
  }
  .nav-links {
    inset: 55px 0 auto 0;
  }
  .hero {
    padding-top: 28px;
  }
  .nav + header.section {
    padding-top: 32px;
  }
}
/* readout chips */
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.4rem;
}
.chip {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  border: 1px solid var(--line-strong);
  border-radius: 100px;
  padding: 0.42em 0.85em;
  color: #3a393f;
  background: rgba(255, 255, 255, 0.4);
}
.ink .chip {
  border-color: var(--line-light);
  color: #cfcdd3;
  background: rgba(255, 255, 255, 0.04);
}
.chip b {
  color: var(--crimson);
  font-weight: 600;
}

/* ---------- Cards ---------- */
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 2.4vw, 32px);
  transition:
    transform 0.4s var(--ease),
    box-shadow 0.4s var(--ease),
    border-color 0.3s;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 30px 50px -40px rgba(22, 21, 25, 0.5);
  border-color: var(--line-strong);
}
.ink .card {
  background: var(--ink-2);
  border-color: var(--line-light);
}
.ink .card:hover {
  border-color: rgba(255, 255, 255, 0.28);
}
.card .idx {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--crimson);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 1.2rem;
}
.card h3 {
  margin-bottom: 0.5rem;
}
.card p {
  color: #4a494f;
  font-size: 0.98rem;
}
.ink .card p {
  color: #b7b5bb;
}

/* icon tile */
.itile {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  margin-bottom: 1.1rem;
  background: linear-gradient(150deg, var(--crimson), var(--crimson-deep));
  color: #fff;
}
.itile svg {
  width: 22px;
  height: 22px;
}

/* ---------- Stream / data-source module ---------- */
.stream {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.4rem 0;
  border-top: 1px solid var(--line);
}
.stream:last-child {
  border-bottom: 1px solid var(--line);
}
.stream .tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--crimson);
  letter-spacing: 0.12em;
  padding-top: 0.35em;
  min-width: 52px;
}
.stream h4 {
  font-size: 1.2rem;
  margin-bottom: 0.3rem;
}
.stream p {
  color: #4a494f;
  font-size: 0.96rem;
}

/* ---------- Stat / readout ---------- */
.stat {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.stat .num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 4.4vw, 3.6rem);
  line-height: 1;
  letter-spacing: -0.03em;
}
.stat .num .u {
  font-size: 0.42em;
  color: var(--crimson);
  vertical-align: super;
  margin-left: 0.15em;
  letter-spacing: 0;
}
.stat .lbl {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--charcoal);
  text-transform: uppercase;
}
.ink .stat .lbl {
  color: #98969c;
}

/* ---------- Process steps ---------- */
.steps {
  counter-reset: step;
  display: grid;
  gap: 0;
}
.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.4rem;
  padding: 1.8rem 0;
  border-top: 1px solid var(--line-light);
  align-items: start;
}
.step:first-child {
  border-top: 0;
}
.step .n {
  counter-increment: step;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--crimson);
  border: 1px solid var(--line-light);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
}
.step .n::before {
  content: "0" counter(step);
}
.step h3 {
  font-size: 1.35rem;
  margin-bottom: 0.4rem;
}
.step p {
  color: #b7b5bb;
  font-size: 1rem;
  max-width: 56ch;
}

/* ---------- Pricing ---------- */
.tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2vw, 26px);
  align-items: start;
}
@media (max-width: 900px) {
  .tiers {
    grid-template-columns: 1fr;
    max-width: 460px;
    margin-inline: auto;
  }
}
.tier {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 2.6vw, 34px);
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.tier.featured {
  border-color: var(--crimson);
  box-shadow: 0 40px 60px -50px var(--crimson);
}
.tier .badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--crimson);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.45em 1em;
  border-radius: 100px;
}
.tier .tname {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--charcoal);
}
.tier .price {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.2rem, 3.6vw, 2.9rem);
  letter-spacing: -0.03em;
  margin: 0.5rem 0 0.1rem;
  line-height: 1;
}
.tier .price .per {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--charcoal);
  letter-spacing: 0;
}
.tier .markers {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--crimson);
  margin: 0.2rem 0 1.3rem;
}
.tier ul {
  list-style: none;
  display: grid;
  gap: 0.7rem;
  margin: 0 0 1.8rem;
}
.tier li {
  display: flex;
  gap: 0.7rem;
  font-size: 0.94rem;
  color: #3f3e44;
  line-height: 1.4;
}
.tier li svg {
  width: 16px;
  height: 16px;
  flex: none;
  color: var(--crimson);
  margin-top: 0.2em;
}
.tier .btn {
  margin-top: auto;
  justify-content: center;
}

/* ---------- Marquee readout strip ---------- */
.strip {
  border-block: 1px solid var(--line-light);
  overflow: hidden;
  background: var(--ink);
}
.strip-track {
  display: flex;
  gap: 3.5rem;
  white-space: nowrap;
  padding: 16px 0;
  width: max-content;
  animation: marq 34s linear infinite;
}
.strip-track span {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  color: #8f8d93;
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
}
.strip-track span b {
  color: #e8a9ab;
  font-weight: 500;
}
.strip-track span::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--crimson);
  border-radius: 50%;
}
@keyframes marq {
  to {
    transform: translateX(-50%);
  }
}

/* ---------- FAQ ---------- */
.faq {
  border-top: 1px solid var(--line);
}
.faq details {
  border-bottom: 1px solid var(--line);
  padding: 1.3rem 0;
}
.faq summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.12rem;
  letter-spacing: -0.01em;
  align-items: center;
}
.faq summary::-webkit-details-marker {
  display: none;
}
.faq summary .pm {
  flex: none;
  width: 22px;
  height: 22px;
  position: relative;
}
.faq summary .pm::before,
.faq summary .pm::after {
  content: "";
  position: absolute;
  background: var(--crimson);
  inset: 0;
  margin: auto;
}
.faq summary .pm::before {
  width: 100%;
  height: 2px;
}
.faq summary .pm::after {
  width: 2px;
  height: 100%;
  transition: transform 0.3s var(--ease);
}
.faq details[open] summary .pm::after {
  transform: rotate(90deg);
  opacity: 0;
}
.faq p {
  margin-top: 0.9rem;
  color: #4a494f;
  max-width: 70ch;
}

/* ---------- CTA band ---------- */
.cta-band {
  position: relative;
  overflow: hidden;
  background: radial-gradient(
    120% 140% at 80% 0%,
    var(--crimson-deep),
    var(--ink) 55%
  );
}
.cta-band .wrap {
  position: relative;
  z-index: 2;
}
.cta-arrow {
  position: absolute;
  right: -4%;
  bottom: -20%;
  width: 46%;
  opacity: 0.16;
  z-index: 1;
  color: var(--crimson-bright);
}
@media (max-width: 700px) {
  .cta-arrow {
    width: 80%;
    right: -20%;
    opacity: 0.1;
  }
}

/* ---------- Disclaimer / footnote ---------- */
.note {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.6;
  color: var(--charcoal);
  max-width: 74ch;
}
.ink .note {
  color: #8f8d93;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--ink);
  color: #c9c7cd;
  padding-block: clamp(48px, 6vw, 80px) 32px;
}
.footer .wrap {
  display: grid;
  gap: 2.5rem;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2rem;
}
@media (max-width: 820px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 480px) {
  .footer-top {
    grid-template-columns: 1fr;
  }
}
.footer img {
  height: 70px;
  width: auto;
  margin-bottom: 1.2rem;
  padding: 10px 14px;
  background: var(--paper);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
}
.footer h5 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #8f8d93;
  margin-bottom: 1.1rem;
  font-weight: 500;
}
.footer ul {
  list-style: none;
  display: grid;
  gap: 0.7rem;
}
.footer a {
  font-size: 0.92rem;
  color: #c9c7cd;
  transition: color 0.2s;
}
.footer a:hover {
  color: #fff;
}
.footer .tm {
  font-size: 0.9rem;
  color: #8f8d93;
  max-width: 34ch;
  line-height: 1.6;
}
.footer-bot {
  border-top: 1px solid var(--line-light);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #7c7a80;
  letter-spacing: 0.03em;
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.8s var(--ease),
    transform 0.8s var(--ease);
}
.reveal.in {
  opacity: 1;
  transform: none;
}
.reveal[data-d="1"] {
  transition-delay: 0.08s;
}
.reveal[data-d="2"] {
  transition-delay: 0.16s;
}
.reveal[data-d="3"] {
  transition-delay: 0.24s;
}

/* pill/label used on inline sections */
.kicker {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1.3rem;
  flex-wrap: wrap;
}

/* two-col content */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}
@media (max-width: 860px) {
  .split {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* science highlight box */
.callout {
  background: var(--ink);
  color: #edecea;
  border-radius: var(--radius-lg);
  padding: clamp(26px, 3vw, 44px);
  border-left: 4px solid var(--crimson);
}
.callout .src {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #8f8d93;
  margin-top: 1.2rem;
  letter-spacing: 0.03em;
}
.callout p {
  color: #cdccd2;
  max-width: none;
}

/* compact research credibility band */
.research-band {
  padding-block: clamp(28px, 4vw, 48px);
  border-block: 1px solid var(--line);
}
.research-head {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(24px, 5vw, 72px);
  align-items: end;
  margin-bottom: clamp(24px, 3vw, 36px);
}
.research-head p {
  color: #4a494f;
  font-size: 0.98rem;
}
.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.28);
}
.research-item {
  display: flex;
  flex-direction: column;
  min-height: 260px;
  padding: clamp(22px, 2.5vw, 30px);
  border-left: 1px solid var(--line);
  transition:
    background 0.25s,
    transform 0.35s var(--ease);
}
.research-item:first-child {
  border-left: 0;
}
.research-item:hover {
  background: var(--white);
}
.research-meta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.45;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--charcoal);
}
.research-item strong {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.2vw, 2.8rem);
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--crimson);
  margin: 1.1rem 0 0.8rem;
}
.research-item strong small {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--charcoal);
}
.research-item p {
  color: #45444a;
  font-size: 0.92rem;
  line-height: 1.55;
}
.research-link {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--crimson);
  margin-top: auto;
  padding-top: 1.2rem;
}
.research-link span {
  display: inline-block;
  transition: transform 0.25s var(--ease);
}
.research-item:hover .research-link span {
  transform: translate(2px, -2px);
}
.research-note {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.55;
  color: var(--charcoal);
  max-width: 92ch;
  margin-top: 1rem;
}
@media (max-width: 820px) {
  .research-head {
    grid-template-columns: 1fr;
  }
  .research-grid {
    grid-template-columns: 1fr;
  }
  .research-item {
    min-height: 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .research-item:first-child {
    border-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ============================================================
   Hero convergence viz — four data streams -> one rising line
   ============================================================ */
.viz-stream {
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  opacity: 0.55;
  stroke-dasharray: 1 6;
  animation: flow 2.4s linear infinite;
}
.viz-stream.s1 {
  stroke: #8f8d93;
  animation-delay: 0s;
}
.viz-stream.s2 {
  stroke: #8f8d93;
  animation-delay: 0.5s;
}
.viz-stream.s3 {
  stroke: #8f8d93;
  animation-delay: 1s;
}
.viz-stream.s4 {
  stroke: #8f8d93;
  animation-delay: 1.5s;
}
@keyframes flow {
  to {
    stroke-dashoffset: -28;
  }
}

.viz-trunk {
  fill: none;
  stroke: var(--crimson);
  stroke-width: 4.5;
  stroke-linecap: round;
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: draw 2.4s var(--ease) 0.3s forwards;
}
@keyframes draw {
  to {
    stroke-dashoffset: 0;
  }
}

.viz-arrow {
  fill: var(--crimson);
  opacity: 0;
  transform-origin: center;
  animation: pop 0.5s var(--ease) 2.5s forwards;
}
@keyframes pop {
  0% {
    opacity: 0;
    transform: translateY(8px) scale(0.7);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.viz-node {
  fill: var(--paper);
  stroke-width: 2;
}
.viz-node.n1,
.viz-node.n2,
.viz-node.n3,
.viz-node.n4 {
  stroke: #8f8d93;
}
.viz-pulse {
  fill: var(--crimson);
  r: 4;
}
.viz-ring {
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 1;
  opacity: 0.5;
}
.viz-lbl {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.07em;
  fill: var(--charcoal);
  text-transform: uppercase;
}
.viz-glow {
  filter: drop-shadow(0 0 10px rgba(161, 38, 46, 0.5));
}

/* moving pulse dot along trunk */
.viz-dot {
  fill: var(--crimson);
}
@media (prefers-reduced-motion: reduce) {
  .viz-stream,
  .viz-trunk,
  .viz-arrow {
    animation: none;
    stroke-dashoffset: 0;
    opacity: 1;
  }
  .viz-arrow {
    opacity: 1;
    transform: none;
  }
}

/* ============================================================
   Member portal
   ============================================================ */
.portal-page { min-height: 100vh; }
.portal-shell { padding-block: clamp(40px, 6vw, 84px); }
.portal-intro { max-width: 760px; margin-bottom: clamp(28px, 4vw, 48px); }
.portal-intro h1 { margin: .65rem 0 1.1rem; }
.portal-intro h1 span { color: var(--crimson); }
.portal-trust { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1.5rem; }
.portal-trust span {
  font-family: var(--font-mono); font-size: .7rem; letter-spacing: .04em;
  border: 1px solid var(--line-strong); border-radius: 100px; padding: .48em .85em;
  color: var(--charcoal); background: rgba(255,255,255,.35);
}
.portal-auth { max-width: 580px; padding: clamp(26px, 4vw, 44px); }
.portal-panel-head { margin-bottom: 1.5rem; }
.portal-panel-head .mono { display: block; color: var(--crimson); text-transform: uppercase; letter-spacing: .11em; margin-bottom: .7rem; }
.portal-panel-head h2 { margin-bottom: .65rem; }
.portal-panel-head p { color: #56545b; font-size: .95rem; }
.auth-social { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.btn-provider { justify-content: center; border-color: var(--line-strong); background: var(--white); color: var(--ink); }
.btn-provider:hover { border-color: var(--ink); transform: translateY(-2px); }
.auth-divider { display: flex; align-items: center; gap: 1rem; margin: 1.35rem 0; color: var(--charcoal); }
.auth-divider::before,.auth-divider::after { content: ""; height: 1px; background: var(--line); flex: 1; }
.auth-divider span { font-family: var(--font-mono); font-size: .68rem; text-transform: uppercase; letter-spacing: .08em; }
.portal-fields { display: grid; gap: 1rem; }
.portal-field { display: grid; gap: .48rem; margin-bottom: 1rem; }
.portal-field label { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .09em; text-transform: uppercase; color: var(--charcoal); }
.portal-field label span { text-transform: none; letter-spacing: 0; }
.portal-field input,.portal-field select,.portal-field textarea {
  width: 100%; font: inherit; color: var(--ink); background: var(--paper); border: 1px solid var(--line-strong);
  border-radius: 10px; padding: .9rem 1rem; outline: none; transition: border-color .2s, box-shadow .2s;
}
.portal-field textarea { resize: vertical; min-height: 90px; }
.portal-field input:focus,.portal-field select:focus,.portal-field textarea:focus { border-color: var(--crimson); box-shadow: 0 0 0 3px rgba(161,38,46,.1); }
.portal-submit { width: 100%; justify-content: center; margin-top: .25rem; }
.portal-submit:disabled,.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.portal-mode { display: block; margin: 1.1rem auto 0; border: 0; background: none; color: var(--crimson); font: 500 .88rem var(--font-body); cursor: pointer; }
.portal-mode:hover { text-decoration: underline; }
.portal-app-gate { display: grid; gap: .25rem; margin-top: 1.1rem; padding: .9rem 1rem; border-radius: 10px; background: var(--paper-2); color: #4a494f; }
.portal-app-gate strong { font-size: .84rem; color: var(--ink); }
.portal-app-gate span { font-size: .78rem; line-height: 1.5; }
.portal-message { min-height: 1.4em; margin-top: .8rem; font: .76rem/1.5 var(--font-mono); color: #3f684e; }
.portal-message.error { color: var(--crimson); }
.portal-dashboard[hidden],.portal-auth[hidden] { display: none; }
.portal-userbar { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding-bottom: 1.6rem; margin-bottom: 2rem; border-bottom: 1px solid var(--line); }
.portal-userbar .mono { color: var(--crimson); text-transform: uppercase; letter-spacing: .1em; }
.portal-userbar h2 { margin: .35rem 0 .2rem; }
.portal-userbar p { color: var(--charcoal); }
.portal-commerce { margin-bottom: clamp(36px, 5vw, 64px); }
.commerce-head { display: flex; justify-content: space-between; align-items: end; gap: 2rem; }
.commerce-status { flex: none; padding: .5rem .75rem; border: 1px solid var(--line); border-radius: 100px; color: var(--charcoal); font: .7rem var(--font-mono); }
.plan-selector-shell { padding: 12px; border: 1px solid var(--line); border-radius: calc(var(--radius) + 6px); background: rgba(255,255,255,.2); }
.commerce-plans { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); align-items: start; gap: 12px; }
.commerce-plan { position: relative; display: flex; flex-direction: column; min-height: 300px; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,255,.28); }
.commerce-plan.featured { border-color: rgba(161,38,46,.5); box-shadow: 0 15px 40px -34px var(--crimson); }
.commerce-plan.requested { border-color: var(--crimson); box-shadow: 0 0 0 3px rgba(161,38,46,.1), 0 18px 42px -34px var(--crimson); }
.commerce-plan.owned::after { content: "Active"; position: absolute; top: 14px; right: 14px; padding: .3rem .55rem; border-radius: 100px; background: #dce9df; color: #31583b; font: 600 .62rem var(--font-mono); text-transform: uppercase; }
.commerce-plan .plan-kicker { color: var(--crimson); font: .65rem var(--font-mono); letter-spacing: .08em; text-transform: uppercase; }
.commerce-plan h3 { margin: .65rem 0 .7rem; font-size: 1.2rem; }
.plan-price { min-height: 3.65rem; margin: -.1rem 0 .75rem; }
.plan-price-main { display: flex; flex-wrap: wrap; align-items: baseline; gap: .25rem .45rem; }
.plan-price-current { color: var(--ink); font: 700 1.65rem/1.15 var(--font-display); }
.plan-price-cadence { color: var(--charcoal); font: .72rem var(--font-mono); }
.plan-price-detail { display: block; margin-top: .28rem; color: var(--charcoal); font: .66rem/1.35 var(--font-mono); }
.plan-price-compare { text-decoration: line-through; }
.plan-price.loading .plan-price-current,.plan-price.unavailable .plan-price-current { color: var(--charcoal); font: .7rem/1.4 var(--font-mono); }
.plan-price.unavailable { min-height: 2.4rem; }
.commerce-plan p { margin-bottom: 1.4rem; color: #56545b; font-size: .86rem; line-height: 1.55; }
.commerce-plan .btn { justify-content: center; width: 100%; margin-top: auto; padding-inline: .8rem; font-size: .84rem; }
.commerce-plan.web-plan { background: var(--paper-2); }
.plan-detail-stage { position: relative; margin-top: 14px; padding: clamp(22px,3vw,36px); border: 1px solid rgba(161,38,46,.35); border-radius: var(--radius); background: linear-gradient(135deg,rgba(161,38,46,.055),rgba(255,255,255,.44)); box-shadow: 0 22px 52px -48px var(--crimson); }
.plan-detail-stage[hidden],.plan-detail-content[hidden] { display: none; }
.plan-detail-close { position: absolute; top: 14px; right: 16px; display: grid; place-items: center; width: 32px; height: 32px; border: 1px solid var(--line); border-radius: 50%; background: rgba(255,255,255,.6); color: var(--charcoal); font-size: 1.2rem; cursor: pointer; }
.plan-detail-close:hover { border-color: var(--crimson); color: var(--crimson); }
.plan-detail-head { max-width: 70ch; padding-right: 2.5rem; }
.plan-details-label { display: block; margin-bottom: .65rem; color: var(--crimson); font: 600 .65rem var(--font-mono); letter-spacing: .07em; text-transform: uppercase; }
.plan-detail-head h3 { margin-bottom: .45rem; font-size: clamp(1.25rem,2vw,1.65rem); }
.plan-detail-head p { color: #56545b; font-size: .9rem; line-height: 1.55; }
.plan-detail-grid { display: grid; grid-template-columns: minmax(0,1.5fr) minmax(240px,.65fr); gap: clamp(20px,4vw,52px); align-items: end; margin-top: 1.35rem; padding-top: 1.25rem; border-top: 1px solid var(--line); }
.plan-detail-grid ul { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: .65rem 1.5rem; margin: 0; padding: 0; list-style: none; }
.plan-detail-grid li { position: relative; padding-left: 1.1rem; color: #4f4d54; font-size: .82rem; line-height: 1.5; }
.plan-detail-grid li::before { content: ""; position: absolute; left: 0; top: .55em; width: 6px; height: 6px; border-radius: 50%; background: var(--crimson); }
.plan-purchase-box { padding: 1rem; border-radius: 10px; background: rgba(255,255,255,.58); }
.plan-purchase-box .plan-terms { margin: 0; color: var(--charcoal); font: .67rem/1.5 var(--font-mono); }
.plan-purchase-box .btn { justify-content: center; width: 100%; margin-top: .9rem; padding-inline: .8rem; font-size: .82rem; }
.portal-dashboard-grid { display: grid; grid-template-columns: minmax(320px,.8fr) minmax(440px,1.2fr); gap: clamp(24px, 4vw, 48px); align-items: start; }
.portal-upload { padding: clamp(24px, 3vw, 34px); position: sticky; top: 110px; }
.drop-zone { min-height: 150px; display: grid; place-content: center; text-align: center; gap: .35rem; padding: 1.4rem; border: 1.5px dashed var(--line-strong); border-radius: var(--radius); cursor: pointer; background: rgba(255,255,255,.3); transition: border-color .2s, background .2s; }
.drop-zone:hover,.drop-zone.dragging { border-color: var(--crimson); background: rgba(161,38,46,.05); }
.drop-zone input { position: absolute; width: 1px; height: 1px; overflow: hidden; opacity: 0; }
.drop-zone strong { font-family: var(--font-display); font-size: 1.05rem; }
.drop-zone span { color: var(--charcoal); font-size: .82rem; }
.file-queue { display: grid; gap: .55rem; margin: .8rem 0; }
.queued-file { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .7rem .8rem; background: var(--paper-2); border-radius: 9px; }
.queued-file div { min-width: 0; display: grid; }
.queued-file strong { font-size: .82rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.queued-file span { color: var(--charcoal); font: .67rem var(--font-mono); }
.queued-file button { width: 28px; height: 28px; border: 0; border-radius: 50%; background: transparent; color: var(--charcoal); font-size: 1.25rem; cursor: pointer; }
.queued-file button:hover { background: rgba(161,38,46,.1); color: var(--crimson); }
.upload-progress { margin-top: 1rem; }
.upload-progress div { display: flex; justify-content: space-between; gap: 1rem; margin-bottom: .4rem; font: .7rem var(--font-mono); color: var(--charcoal); }
.upload-progress progress { width: 100%; height: 7px; border: 0; border-radius: 100px; overflow: hidden; accent-color: var(--crimson); }
.history-head { display: flex; align-items: end; justify-content: space-between; gap: 1rem; }
.history-count { flex: none; font: .7rem var(--font-mono); color: var(--charcoal); border: 1px solid var(--line); border-radius: 100px; padding: .4em .75em; }
.submission-list { display: grid; border-top: 1px solid var(--line); }
.submission-item { display: flex; justify-content: space-between; gap: 1.25rem; padding: 1.15rem 0; border-bottom: 1px solid var(--line); }
.submission-main { display: flex; align-items: center; gap: .9rem; min-width: 0; }
.submission-icon { flex: none; display: grid; place-items: center; width: 46px; height: 46px; border-radius: 10px; background: var(--paper-2); color: var(--crimson); font: 600 .61rem var(--font-mono); letter-spacing: .04em; }
.submission-main div { min-width: 0; }
.submission-main h3 { font: 700 .98rem var(--font-display); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: .2rem; }
.submission-main p { font: .68rem/1.5 var(--font-mono); color: var(--charcoal); text-transform: capitalize; }
.submission-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; align-items: center; gap: .45rem .8rem; }
.submission-status { font: .63rem var(--font-mono); letter-spacing: .04em; text-transform: uppercase; color: #3f684e; background: rgba(63,104,78,.09); border-radius: 100px; padding: .48em .7em; }
.submission-status.pending { color: #805f22; background: rgba(128,95,34,.1); }
.text-action { border: 0; padding: .2rem 0; background: none; color: var(--crimson); font: 500 .75rem var(--font-body); cursor: pointer; }
.text-action:hover { text-decoration: underline; }
.text-action.muted { color: var(--charcoal); }
.portal-empty { padding: 2.5rem 1rem; text-align: center; color: var(--charcoal); border-bottom: 1px solid var(--line); font-size: .92rem; }
.portal-footer { margin-top: auto; padding-block: 28px; }
.portal-footer .footer-bot { border-top: 0; padding-top: 0; }
@media(max-width:960px){
  .commerce-plans { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .plan-detail-grid { grid-template-columns: 1fr; }
  .portal-dashboard-grid { grid-template-columns: 1fr; }
  .portal-upload { position: static; }
}
@media(max-width:620px){
  .commerce-head { display: block; }
  .commerce-status { display: inline-block; margin-top: 1rem; }
  .commerce-plans { grid-template-columns: 1fr; }
  .commerce-plan { min-height: 0; }
  .plan-detail-grid ul { grid-template-columns: 1fr; }
  .portal-shell { padding-top: 32px; }
  .auth-social { grid-template-columns: 1fr; }
  .portal-userbar,.submission-item { align-items: flex-start; }
  .submission-item { flex-direction: column; }
  .submission-actions { justify-content: flex-start; padding-left: 55px; }
  .portal-userbar .btn { padding-inline: 1rem; }
}