/* =====================================================
   NERIS — Page styles (neris.html) + NERIS callout band
   used on pid-product.html. Depends on variables &
   shared components in css/styles.css.
   ===================================================== */

/* ===== NERIS HERO ===== */
.neris-hero {
  padding: 9rem 0 5rem;
  background: var(--g50);
  position: relative;
  overflow: hidden;
}

.neris-hero .wrap {
  max-width: 880px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.neris-hero .nh-tag {
  font-family: var(--display);
  font-size: .95rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 1.25rem;
}

.neris-hero h1 {
  font-family: var(--display);
  font-size: clamp(3rem, 7vw, 5.5rem);
  line-height: .95;
  letter-spacing: .02em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.neris-hero h1 span {
  color: var(--red);
}

.neris-hero .nh-lead {
  font-size: 1.2rem;
  line-height: 1.7;
  color: var(--g600);
  max-width: 640px;
  margin: 0 auto 2rem;
}

/* ===== EXPLAINER SECTION ===== */
.neris-explainer {
  padding: 6rem 0;
}

.neris-explainer .wrap {
  max-width: 880px;
}

.ne-eyebrow {
  font-family: var(--display);
  font-size: .9rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 1rem;
  text-align: center;
}

.ne-h2 {
  font-family: var(--display);
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  letter-spacing: .02em;
  text-transform: uppercase;
  line-height: .95;
  text-align: center;
  margin-bottom: 2.5rem;
}

.ne-body p {
  font-size: 1.08rem;
  line-height: 1.85;
  color: var(--g600);
}

.ne-body p + p {
  margin-top: 1.25rem;
}

.ne-body strong {
  color: var(--dark);
}

.ne-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
  padding: 2.5rem;
  background: var(--dark);
  border-radius: 16px;
  color: var(--white);
}

.ne-stat {
  text-align: center;
}

.ne-stat-n {
  font-family: var(--display);
  font-size: 2.6rem;
  color: var(--red);
  line-height: 1;
  margin-bottom: .35rem;
}

.ne-stat-l {
  font-size: .82rem;
  color: rgba(255, 255, 255, .65);
  line-height: 1.5;
}

@media (max-width: 640px) {
  .ne-stats {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

/* ===== TIMELINE ===== */
.neris-timeline {
  padding: 6rem 0;
  background: var(--g50);
}

.nt-header {
  text-align: center;
  margin-bottom: 4rem;
}

.nt-header h2 {
  font-family: var(--display);
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  letter-spacing: .02em;
  text-transform: uppercase;
  line-height: .95;
}

.nt-header p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--g600);
  max-width: 600px;
  margin: 1rem auto 0;
}

.nt-rail {
  max-width: 760px;
  margin: 0 auto;
  position: relative;
  padding-left: 2rem;
}

.nt-rail::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--g200);
}

.nt-item {
  position: relative;
  padding: 0 0 2.25rem 1.75rem;
}

.nt-item:last-child {
  padding-bottom: 0;
}

.nt-item::before {
  content: '';
  position: absolute;
  left: -1.95rem;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--white);
  border: 3px solid var(--g400);
}

.nt-item.is-cutover::before {
  border-color: var(--red);
  background: var(--red);
  box-shadow: 0 0 0 4px rgba(206, 32, 41, .15);
}

.nt-date {
  font-family: var(--display);
  font-size: 1rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: .35rem;
}

.nt-title {
  font-family: var(--display);
  font-size: 1.35rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: .35rem;
}

.nt-body {
  font-size: .95rem;
  line-height: 1.7;
  color: var(--g600);
}

@media (max-width: 640px) {
  .nt-rail {
    padding-left: 1rem;
  }

  .nt-item {
    padding-left: 1.25rem;
  }

  .nt-item::before {
    left: -1.45rem;
  }
}

/* ===== COMPARISON TABLE ===== */
.neris-compare {
  padding: 6rem 0;
}

.nc-header {
  text-align: center;
  margin-bottom: 3rem;
}

.nc-header h2 {
  font-family: var(--display);
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  letter-spacing: .02em;
  text-transform: uppercase;
  line-height: .95;
}

.nc-header p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--g600);
  max-width: 600px;
  margin: 1rem auto 0;
}

.nc-table {
  max-width: 960px;
  margin: 0 auto;
  border: 1px solid var(--g200);
  border-radius: 14px;
  overflow: hidden;
}

.nc-row {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1fr;
  border-bottom: 1px solid var(--g200);
}

.nc-row:last-child {
  border-bottom: none;
}

.nc-row.is-head {
  background: var(--dark);
  color: var(--white);
}

.nc-cell {
  padding: 1.15rem 1.5rem;
  font-size: .95rem;
  line-height: 1.6;
  color: var(--g600);
  border-right: 1px solid var(--g200);
}

.nc-cell:last-child {
  border-right: none;
}

.nc-row.is-head .nc-cell {
  color: var(--white);
  border-right-color: rgba(255, 255, 255, .12);
  font-family: var(--display);
  font-size: 1rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.nc-row.is-head .nc-cell.is-neris {
  color: var(--red);
}

.nc-cell.is-label {
  font-family: var(--display);
  font-size: 1rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--dark);
}

@media (max-width: 640px) {
  .nc-row {
    grid-template-columns: 1fr;
  }

  .nc-cell {
    border-right: none;
    border-bottom: 1px solid var(--g200);
  }

  .nc-row:last-child .nc-cell:last-child {
    border-bottom: none;
  }
}

/* ===== HOW PID USES NERIS ===== */
.neris-pid {
  padding: 6rem 0;
  background: var(--g50);
}

.np-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem;
}

.np-eyebrow {
  font-family: var(--display);
  font-size: .9rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 1rem;
}

.np-header h2 {
  font-family: var(--display);
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  letter-spacing: .02em;
  text-transform: uppercase;
  line-height: .95;
}

.np-header p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--g600);
  margin-top: 1rem;
}

.np-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 1080px;
  margin: 0 auto;
}

.np-card {
  padding: 2rem;
  background: var(--white);
  border-radius: 14px;
  border: 1px solid var(--g200);
  transition: all .35s;
}

.np-card:hover {
  border-color: var(--red);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, .06);
}

.np-card-label {
  font-family: var(--display);
  font-size: .85rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: .75rem;
}

.np-card h4 {
  font-family: var(--display);
  font-size: 1.4rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  line-height: 1.05;
  margin-bottom: .65rem;
}

.np-card p {
  font-size: .92rem;
  line-height: 1.7;
  color: var(--g600);
}

@media (max-width: 900px) {
  .np-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== FLOW (RMS + PID) ===== */
.neris-flow {
  padding: 6rem 0;
}

.nf-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3rem;
}

.nf-header h2 {
  font-family: var(--display);
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  letter-spacing: .02em;
  text-transform: uppercase;
  line-height: .95;
}

.nf-header p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--g600);
  margin-top: 1rem;
}

.nf-diagram {
  max-width: 980px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  align-items: stretch;
}

.nf-node {
  padding: 1.5rem 1.25rem;
  border: 1px solid var(--g200);
  border-radius: 12px;
  text-align: center;
  position: relative;
  background: var(--white);
}

.nf-node.is-neris {
  border-color: var(--dark);
  background: var(--dark);
  color: var(--white);
}

.nf-node.is-pid {
  border-color: var(--red);
  background: var(--red);
  color: var(--white);
}

.nf-node-label {
  font-family: var(--display);
  font-size: 1.2rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  line-height: 1;
  margin-bottom: .5rem;
}

.nf-node-sub {
  font-size: .82rem;
  line-height: 1.5;
  color: var(--g600);
}

.nf-node.is-neris .nf-node-sub,
.nf-node.is-pid .nf-node-sub {
  color: rgba(255, 255, 255, .8);
}

.nf-legend {
  max-width: 760px;
  margin: 2.5rem auto 0;
  text-align: center;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--g600);
}

.nf-legend strong {
  color: var(--dark);
}

@media (max-width: 768px) {
  .nf-diagram {
    grid-template-columns: 1fr;
  }
}

/* ===== RESOURCES ===== */
.neris-resources {
  padding: 5rem 0;
  background: var(--g50);
}

.nr-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.nr-header h2 {
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: .02em;
  text-transform: uppercase;
  line-height: .95;
}

.nr-header p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--g600);
  margin-top: .75rem;
}

.nr-grid {
  max-width: 760px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.nr-card {
  display: block;
  padding: 1.5rem 1.75rem;
  background: var(--white);
  border: 1px solid var(--g200);
  border-radius: 12px;
  transition: all .25s;
}

.nr-card:hover {
  border-color: var(--red);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, .06);
}

.nr-card-label {
  font-family: var(--display);
  font-size: .8rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: .4rem;
}

.nr-card-title {
  font-family: var(--display);
  font-size: 1.15rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: .25rem;
}

.nr-card-host {
  font-size: .85rem;
  color: var(--g600);
}

@media (max-width: 640px) {
  .nr-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== FAQ (NERIS page; pid-product.html has its own) ===== */
.neris-faq {
  padding: 6rem 0;
}

.neris-faq .faq-header {
  text-align: center;
  margin-bottom: 3rem;
}

.neris-faq .faq-header h2 {
  font-family: var(--display);
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  letter-spacing: .02em;
  text-transform: uppercase;
  line-height: .95;
}

.neris-faq .faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.neris-faq .faq-item {
  border-bottom: 1px solid var(--g200);
}

.neris-faq .faq-q {
  width: 100%;
  background: none;
  border: none;
  font-family: var(--body);
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
  padding: 1.5rem 2rem 1.5rem 0;
  cursor: pointer;
  position: relative;
  color: var(--dark);
}

.neris-faq .faq-q::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--display);
  font-size: 1.5rem;
  color: var(--red);
  transition: transform .3s;
}

.neris-faq .faq-item.open .faq-q::after {
  content: '−';
}

.neris-faq .faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
}

.neris-faq .faq-item.open .faq-a {
  max-height: 320px;
  padding-bottom: 1.5rem;
}

.neris-faq .faq-a p {
  font-size: .95rem;
  line-height: 1.75;
  color: var(--g600);
}

/* ===== DISCLAIMER ===== */
.neris-disclaimer {
  padding: 2.5rem 0 4rem;
  text-align: center;
}

.neris-disclaimer p {
  max-width: 720px;
  margin: 0 auto;
  font-size: .85rem;
  line-height: 1.7;
  color: var(--g400);
}

/* =====================================================
   NERIS CALLOUT BAND (used on pid-product.html)
   ===================================================== */
.neris-band {
  padding: 5rem 0;
  background: var(--dark);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.neris-band::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--red);
}

.neris-band .wrap {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 3.5rem;
  align-items: center;
}

.nb-eyebrow {
  font-family: var(--display);
  font-size: .9rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 1rem;
}

.nb-title {
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1;
  letter-spacing: .02em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.nb-body {
  font-size: 1.05rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, .75);
  margin-bottom: 1.75rem;
}

.nb-body strong {
  color: var(--white);
}

.nb-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.nb-link {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--display);
  font-size: 1rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--white);
  border-bottom: 2px solid var(--red);
  padding-bottom: .25rem;
  transition: color .2s;
}

.nb-link:hover {
  color: var(--red);
}

.nb-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .85rem;
  padding-left: 0;
}

.nb-bullets li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 1rem;
  align-items: baseline;
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, .04);
  border-radius: 10px;
  border-left: 3px solid var(--red);
}

.nb-bullets .nb-label {
  font-family: var(--display);
  font-size: .85rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--red);
}

.nb-bullets .nb-text {
  font-size: .92rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, .78);
}

@media (max-width: 900px) {
  .neris-band .wrap {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 480px) {
  .nb-bullets li {
    grid-template-columns: 1fr;
    gap: .25rem;
  }
}