/* ==========================================
   Impulse Campus — articles + calculator
   ========================================== */

/* ---- Articles as campus floors ---- */
body.has-nx-shell .articles-page.nx-articles {
  position: relative;
  z-index: 2;
  padding-bottom: 48px;
}

.campus-page-stage {
  position: fixed;
  inset: 0;
  z-index: 0;
  background-size: cover;
  background-position: center 42%;
  background-repeat: no-repeat;
  pointer-events: none;
  /* Photo is a hero atmosphere, not wallpaper. Mask dissolves it into
     --nx-bg-void so long-form text sits on the page colour, not a photo. */
  -webkit-mask-image: linear-gradient(
    180deg,
    #000 0%,
    #000 34%,
    rgba(0, 0, 0, 0.55) 56%,
    transparent 78%
  );
  mask-image: linear-gradient(
    180deg,
    #000 0%,
    #000 34%,
    rgba(0, 0, 0, 0.55) 56%,
    transparent 78%
  );
}
.campus-page-stage--cloud { background-position: 40% 48%; }
.campus-page-stage--desk { background-position: 52% 50%; }
.campus-page-stage--studio { background-position: 50% 40%; }
.campus-page-stage--security { background-position: 48% 42%; }
.campus-page-stage--vault { background-position: 36% 50%; }
.campus-page-stage::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 52% at 50% 28%, transparent 18%, color-mix(in oklab, var(--nx-bg-void) 32%, transparent) 100%),
    linear-gradient(180deg, color-mix(in oklab, var(--nx-bg-void) 30%, transparent) 0%, color-mix(in oklab, var(--nx-bg-void) 10%, transparent) 38%, color-mix(in oklab, var(--nx-bg-void) 40%, transparent) 100%);
}
[data-theme="dark"] .campus-page-stage::after {
  background:
    radial-gradient(ellipse 70% 52% at 50% 28%, transparent 14%, color-mix(in oklab, var(--nx-bg-void) 42%, transparent) 100%),
    linear-gradient(180deg, color-mix(in oklab, var(--nx-bg-void) 38%, transparent) 0%, color-mix(in oklab, var(--nx-bg-void) 16%, transparent) 38%, color-mix(in oklab, var(--nx-bg-void) 52%, transparent) 100%);
}
@media (max-width: 720px) {
  .campus-page-stage {
    background-position: center 28%;
    -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 22%, rgba(0, 0, 0, 0.4) 42%, transparent 62%);
    mask-image: linear-gradient(180deg, #000 0%, #000 22%, rgba(0, 0, 0, 0.4) 42%, transparent 62%);
  }
}

body.has-nx-shell .ap-intro.nx-ap-intro {
  min-height: auto;
  padding: calc(110px + env(safe-area-inset-top, 0px)) 0 var(--space-8);
  position: relative;
  z-index: 2;
}
body.has-nx-shell .ap-intro.nx-ap-intro::before,
body.has-nx-shell .ap-intro.nx-ap-intro::after {
  display: none;
}
body.has-nx-shell .nx-ap-intro .container {
  max-width: var(--container-max);
  padding-left: var(--nx-gutter);
  padding-right: var(--nx-gutter);
}
body.has-nx-shell .nx-ap-intro__panel {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-5);
  padding: 28px;
  background: var(--campus-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--nx-border-glass);
  border-radius: var(--nx-radius-xl);
  box-shadow: 0 16px 48px rgba(10, 16, 24, 0.1);
}
body.has-nx-shell .nx-ap-intro__panel::before { display: none; }
body.has-nx-shell .nx-ap-intro__title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 600;
  margin: 0 0 12px;
  color: var(--campus-ink);
}
body.has-nx-shell .nx-ap-intro__brand {
  display: block;
  color: var(--campus-ink);
}
body.has-nx-shell .nx-ap-intro__sub {
  color: var(--campus-ink-dim);
  max-width: 40ch;
  margin: 0;
  line-height: 1.55;
}
body.has-nx-shell .nx-ap-intro__chapters {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
body.has-nx-shell .nx-ap-intro__chip {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  text-decoration: none;
  color: var(--campus-ink-dim);
  border: 1px solid var(--nx-border);
  border-radius: var(--nx-radius-md);
  background: rgba(255, 255, 255, 0.25);
  transition: border-color 220ms, color 220ms, background 220ms;
  font-size: 13px;
}
body.has-nx-shell .nx-ap-intro__chip:hover {
  color: var(--campus-ink);
  border-color: rgba(28, 36, 48, 0.4);
  background: rgba(28, 36, 48, 0.08);
}
body.has-nx-shell .nx-ap-intro__chip-num {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  color: var(--campus-ink);
}
body.has-nx-shell .nx-ap-intro__scroll {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  color: var(--campus-ink-dim);
  text-decoration: none;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

body.has-nx-shell .chapter-nav {
  position: fixed;
  top: 50%;
  right: max(16px, env(safe-area-inset-right, 0px));
  left: auto;
  bottom: auto;
  transform: translateY(-50%);
  z-index: 80;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: min(168px, calc(100vw - 32px));
  padding: 14px 12px;
  margin: 0;
  background: color-mix(in srgb, var(--campus-glass-strong) 88%, #fff);
  border: 1px solid var(--nx-border-glass);
  border-radius: var(--nx-radius-xl);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.55) inset,
    0 18px 48px rgba(10, 16, 24, 0.12);
  backdrop-filter: blur(18px) saturate(1.1);
  -webkit-backdrop-filter: blur(18px) saturate(1.1);
}
[data-theme="dark"] body.has-nx-shell .chapter-nav {
  background: color-mix(in srgb, var(--campus-glass-strong) 92%, #000);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.06) inset,
    0 18px 48px rgba(0, 0, 0, 0.35);
}
body.has-nx-shell .chapter-nav__eyebrow {
  font-family: var(--nx-font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--campus-mark);
  padding: 0 8px 4px;
}
body.has-nx-shell .chapter-nav__list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
body.has-nx-shell .chapter-nav__dot {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 10px;
  width: 100%;
  height: auto;
  min-height: 40px;
  padding: 8px 10px;
  margin: 0;
  border-radius: var(--nx-radius-md);
  border: 1px solid transparent;
  background: transparent;
  color: var(--campus-ink-dim);
  text-decoration: none;
  box-shadow: none;
  transition:
    background 200ms var(--nx-ease-out),
    border-color 200ms var(--nx-ease-out),
    color 200ms var(--nx-ease-out),
    transform 200ms var(--nx-ease-out);
}
body.has-nx-shell .chapter-nav__dot::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 2px;
  border-radius: 2px;
  background: transparent;
  transition: background 200ms var(--nx-ease-out);
}
body.has-nx-shell .chapter-nav__num {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  color: var(--campus-mark);
}
body.has-nx-shell .chapter-nav__name {
  font-family: var(--nx-font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: inherit;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
body.has-nx-shell .chapter-nav__dot .dot-num,
body.has-nx-shell .chapter-nav__dot .dot-text {
  display: none !important;
}
body.has-nx-shell .chapter-nav__dot:hover {
  background: color-mix(in srgb, var(--campus-ink) 5%, transparent);
  border-color: var(--campus-line-dim);
  color: var(--campus-ink);
  transform: translateX(-2px);
  width: 100%;
  border-radius: var(--nx-radius-md);
}
body.has-nx-shell .chapter-nav__dot.is-active {
  background: color-mix(in srgb, var(--campus-ink) 7%, transparent);
  border-color: color-mix(in srgb, var(--campus-ink) 18%, transparent);
  color: var(--campus-ink);
  width: 100%;
  border-radius: var(--nx-radius-md);
  box-shadow: none;
}
body.has-nx-shell .chapter-nav__dot.is-active::before {
  background: linear-gradient(
    180deg,
    var(--campus-impulse, #d4c4a8),
    color-mix(in srgb, var(--campus-ink) 55%, var(--campus-impulse, #d4c4a8))
  );
}
body.has-nx-shell .chapter-nav__dot.is-active .chapter-nav__num {
  color: color-mix(in srgb, var(--campus-ink) 50%, var(--campus-impulse, #d4c4a8));
}
body.has-nx-shell .chapter-nav__dot:focus-visible {
  outline: 2px solid var(--campus-ink);
  outline-offset: 2px;
}

@media (max-width: 1100px) {
  body.has-nx-shell .chapter-nav {
    width: auto;
    min-width: 0;
    padding: 10px;
  }
  body.has-nx-shell .chapter-nav__eyebrow,
  body.has-nx-shell .chapter-nav__name {
    display: none;
  }
  body.has-nx-shell .chapter-nav__dot {
    grid-template-columns: 1fr;
    justify-items: center;
    min-height: 34px;
    padding: 8px 10px;
  }
  body.has-nx-shell .chapter-nav__dot::before { display: none; }
  body.has-nx-shell .chapter-nav__num {
    font-size: 10px;
  }
  body.has-nx-shell .chapter-nav__dot.is-active {
    background: var(--campus-ink);
  }
  body.has-nx-shell .chapter-nav__dot.is-active .chapter-nav__num {
    color: #f4f6f8;
  }
  [data-theme="dark"] body.has-nx-shell .chapter-nav__dot.is-active {
    background: var(--campus-impulse, #d4c4a8);
  }
  [data-theme="dark"] body.has-nx-shell .chapter-nav__dot.is-active .chapter-nav__num {
    color: #14181e;
  }}

@media (max-width: 700px) {
  body.has-nx-shell .chapter-nav {
    display: flex;
    top: auto;
    bottom: max(14px, env(safe-area-inset-bottom, 0px));
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    flex-direction: row;
    align-items: center;
    width: auto;
    max-width: calc(100vw - 24px);
    padding: 8px;
    border-radius: 999px;
  }
  body.has-nx-shell .chapter-nav__list {
    flex-direction: row;
    gap: 2px;
  }
  body.has-nx-shell .chapter-nav__dot {
    min-width: 40px;
    min-height: 36px;
    border-radius: 999px;
  }
  body.has-nx-shell .chapter-nav__dot:hover {
    transform: none;
  }
  body.has-nx-shell .chapter-nav__dot.is-active {
    border-radius: 999px;
  }}

@media (prefers-reduced-motion: reduce) {
  body.has-nx-shell .chapter-nav__dot {
    transition: none;
  }}

body.has-nx-shell .art-wrap {
  position: relative;
  z-index: 2;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--nx-gutter) 48px;
}
body.has-nx-shell .art-title { color: var(--campus-ink); }
body.has-nx-shell .tldr,
body.has-nx-shell .inline-case,
body.has-nx-shell .stage-box,
body.has-nx-shell .faq-block,
body.has-nx-shell .price-card,
body.has-nx-shell .ap-outro__inner {
  background: var(--campus-glass);
  backdrop-filter: blur(16px);
  border: 1px solid var(--nx-border-glass);
  border-radius: var(--nx-radius-lg);
  box-shadow: none;
}
body.has-nx-shell .tldr.tilt-card:hover { transform: none !important; }
body.has-nx-shell .scroll-progress {
  background: var(--campus-ink);
  height: 2px;
}

@media (max-width: 900px) {
  body.has-nx-shell .nx-ap-intro__panel { grid-template-columns: 1fr; }}

@keyframes campus-flash {
  0% { opacity: 0.45; }
  100% { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .campus-page-stage { transition: none; }
}

/* ==========================================
   Cloud Hall — articles #chapter-1
   Spacious interactive service floor
   ========================================== */

body.has-nx-shell .chapter.chapter--cloud {
  padding-top: clamp(28px, 4vw, 48px);
  padding-bottom: clamp(56px, 8vw, 96px);
}
body.has-nx-shell .chapter.chapter--cloud::before {
  display: none;
}

.ch-cloud {
  position: relative;
  z-index: 2;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--nx-gutter);
}

/* ---- Hero ---- */
.ch-cloud__hero {
  display: flex;
  align-items: flex-end;
  padding: clamp(16px, 3vw, 28px) 0 clamp(28px, 4vw, 40px);
}
.ch-cloud__panel {
  width: min(100%, 34rem);
  padding: clamp(24px, 3vw, 32px);
  background: color-mix(in srgb, var(--campus-glass-strong) 88%, #fff);
  backdrop-filter: blur(22px) saturate(1.15);
  -webkit-backdrop-filter: blur(22px) saturate(1.15);
  border: 1px solid var(--nx-border-glass);
  border-radius: var(--nx-radius-xl);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.55) inset,
    0 18px 48px rgba(10, 16, 24, 0.12);
}
[data-theme="dark"] .ch-cloud__panel {
  background: color-mix(in srgb, var(--campus-glass-strong) 92%, #000);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.06) inset,
    0 18px 48px rgba(0, 0, 0, 0.35);
}
.ch-cloud__title {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.7rem, 3.4vw, 2.45rem);
  line-height: 1.14;
  letter-spacing: -0.03em;
  color: var(--campus-ink);
  margin: 0 0 12px;
}
.ch-cloud__support {
  margin: 0 0 16px;
  font-size: 0.98rem;
  line-height: 1.55;
  color: var(--campus-ink-dim);
  max-width: 40ch;
}
.ch-cloud__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 0;
  margin-bottom: 18px;
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--campus-ink-dim);
}
.ch-cloud__price {
  color: var(--campus-ink);
  font-weight: 600;
}
.ch-cloud__meta-sep {
  display: inline-block;
  width: 1px;
  height: 10px;
  margin: 0 10px;
  background: var(--campus-line-dim);
  vertical-align: middle;
}
.ch-cloud__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---- Sheet ---- */
.ch-cloud__sheet {
  margin-top: 4px;
  padding: clamp(36px, 5vw, 56px) clamp(24px, 4vw, 48px) clamp(36px, 5vw, 48px);
  background: rgba(247, 248, 250, 0.72);
  backdrop-filter: blur(18px) saturate(1.1);
  -webkit-backdrop-filter: blur(18px) saturate(1.1);
  border: 1px solid rgba(20, 28, 40, 0.08);
  border-radius: calc(var(--nx-radius-xl) + 4px);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.65) inset,
    0 24px 64px rgba(10, 16, 24, 0.08);
}
[data-theme="dark"] .ch-cloud__sheet {
  background: rgba(16, 22, 32, 0.68);
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.04) inset,
    0 24px 64px rgba(0, 0, 0, 0.35);
}

.ch-cloud__section-head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 28px;
}
.ch-cloud__section-title {
  margin: 0;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.35rem, 2.4vw, 1.7rem);
  color: var(--campus-ink);
  line-height: 1.2;
  letter-spacing: -0.03em;
}
.ch-cloud__section-note {
  margin: 0;
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--campus-mark);
}

/* ---- Compact signal facts ---- */
.ch-cloud__tldr {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-cloud__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.ch-cloud__facts li {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.42);
  border: 1px solid rgba(20, 28, 40, 0.1);
  border-radius: var(--nx-radius-md);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  min-height: 0;
  transition: border-color 220ms var(--nx-ease-out), transform 220ms var(--nx-ease-out), box-shadow 220ms var(--nx-ease-out);
}
.ch-cloud__facts li:hover {
  border-color: color-mix(in srgb, var(--campus-ink) 28%, transparent);
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(10, 16, 24, 0.1);
}
[data-theme="dark"] .ch-cloud__facts li {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
}
.ch-cloud__fact-media {
  margin: 0;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: color-mix(in srgb, var(--campus-ink) 8%, transparent);
}
.ch-cloud__fact-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 480ms var(--nx-ease-out);
}
.ch-cloud__facts li:hover .ch-cloud__fact-media img {
  transform: scale(1.04);
}
.ch-cloud__fact-k {
  font-family: var(--nx-font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--campus-mark);
  padding: 14px 16px 0;
}
.ch-cloud__fact-v {
  font-family: var(--nx-font-mono);
  font-weight: 500;
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  line-height: 1.3;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--campus-ink);
  padding: 6px 16px 16px;
}

/* ---- Interactive rack ---- */
.ch-cloud__rack {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-cloud__rack-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.95fr);
  gap: 28px;
  align-items: stretch;
}
.ch-cloud__nodes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.ch-cloud__node {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  padding: 18px 16px;
  text-align: left;
  cursor: pointer;
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-md);
  background: rgba(255, 255, 255, 0.28);
  color: var(--campus-ink);
  transition:
    border-color 220ms var(--nx-ease-out),
    background 220ms var(--nx-ease-out),
    transform 220ms var(--nx-ease-out),
    box-shadow 220ms var(--nx-ease-out);
}
.ch-cloud__node i {
  font-size: 1.35rem;
  color: var(--campus-mark);
  margin-bottom: 6px;
  transition: color 220ms var(--nx-ease-out);
}
.ch-cloud__node span {
  font-family: var(--nx-font-display);
  font-size: 1.15rem;
  line-height: 1.2;
}
.ch-cloud__node em {
  font-style: normal;
  font-family: var(--nx-font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--campus-mark);
}
.ch-cloud__node:hover {
  border-color: color-mix(in srgb, var(--campus-ink) 28%, transparent);
  background: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
}
.ch-cloud__node.is-active {
  border-color: var(--campus-ink);
  background: color-mix(in srgb, var(--campus-ink) 6%, #fff);
  box-shadow: 0 10px 28px rgba(10, 16, 24, 0.08);
}
.ch-cloud__node.is-active i {
  color: color-mix(in srgb, var(--campus-ink) 55%, var(--campus-impulse, #d4c4a8));
}
.ch-cloud__node:focus-visible {
  outline: 2px solid var(--campus-ink);
  outline-offset: 2px;
}
[data-theme="dark"] .ch-cloud__node {
  background: rgba(255, 255, 255, 0.04);
}
[data-theme="dark"] .ch-cloud__node:hover,
[data-theme="dark"] .ch-cloud__node.is-active {
  background: rgba(255, 255, 255, 0.08);
}

.ch-cloud__node-panel {
  padding: 0;
  overflow: hidden;
  border-radius: var(--nx-radius-lg);
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.42);
  min-height: 100%;
  display: flex;
  flex-direction: column;
}
[data-theme="dark"] .ch-cloud__node-panel {
  background: rgba(255, 255, 255, 0.04);
}
.ch-cloud__viz {
  margin: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: color-mix(in srgb, var(--campus-ink) 8%, transparent);
}
.ch-cloud__viz img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 180ms var(--nx-ease-out), transform 480ms var(--nx-ease-out);
}
.ch-cloud__viz img.is-fading {
  opacity: 0.35;
}
.ch-cloud__node-copy,
.ch-cloud__journey-copy {
  padding: 22px 22px 24px;
}
.ch-cloud__node-panel.is-swap,
.ch-cloud__journey-panel.is-swap {
  animation: chCloudSwap 280ms var(--nx-ease-out);
}
@keyframes chCloudSwap {
  from { opacity: 0.35; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}
.ch-cloud__node-kicker {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-bottom: 10px;
}
.ch-cloud__node-title {
  margin: 0 0 12px;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--campus-ink);
}
.ch-cloud__node-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--campus-ink-dim);
  max-width: 36ch;
}

/* ---- Cost duel ---- */
.ch-cloud__duel {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-cloud__duel-toggle {
  display: inline-flex;
  padding: 4px;
  margin-bottom: 28px;
  border-radius: 999px;
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.35);
  gap: 4px;
}
[data-theme="dark"] .ch-cloud__duel-toggle {
  background: rgba(255, 255, 255, 0.05);
}
.ch-cloud__duel-btn {
  border: 0;
  background: transparent;
  color: var(--campus-ink-dim);
  font-family: var(--nx-font-body);
  font-size: 13px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 200ms, color 200ms;
}
.ch-cloud__duel-btn.is-active {
  background: var(--campus-ink);
  color: #f4f6f8;
}
[data-theme="dark"] .ch-cloud__duel-btn.is-active {
  background: var(--campus-impulse, #d4c4a8);
  color: #14181e;
}
.ch-cloud__duel-btn:focus-visible {
  outline: 2px solid var(--campus-ink);
  outline-offset: 2px;
}
.ch-cloud__duel-stage {
  display: grid;
  grid-template-columns: minmax(220px, 1.05fr) minmax(120px, 0.55fr) minmax(0, 1.1fr);
  gap: 24px;
  align-items: stretch;
}
.ch-cloud__duel-viz {
  margin: 0;
  border-radius: var(--nx-radius-lg);
  overflow: hidden;
  border: 1px solid var(--campus-line-dim);
  background: color-mix(in srgb, var(--campus-ink) 8%, transparent);
  min-height: 220px;
}
.ch-cloud__duel-viz img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 180ms var(--nx-ease-out);
}
.ch-cloud__duel-viz img.is-fading {
  opacity: 0.35;
}
.ch-cloud__bars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: end;
  min-height: 220px;
}
.ch-cloud__bar {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  height: 100%;
  min-height: 180px;
}
.ch-cloud__bar-fill {
  display: block;
  width: 100%;
  border-radius: 12px 12px 6px 6px;
  background: color-mix(in srgb, var(--campus-ink) 14%, transparent);
  transition: height 420ms var(--nx-ease-out), background 280ms;
}
.ch-cloud__bar--staff .ch-cloud__bar-fill { height: 100%; }
.ch-cloud__bar--impulse .ch-cloud__bar-fill { height: 28%; }
.ch-cloud__bar.is-hot .ch-cloud__bar-fill {
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--campus-impulse-bright, #e8d9b8) 75%, #fff),
    color-mix(in srgb, var(--campus-impulse, #d4c4a8) 55%, var(--campus-ink))
  );
}
.ch-cloud__duel[data-mode="staff"] .ch-cloud__bar--staff .ch-cloud__bar-fill {
  background: linear-gradient(180deg, rgba(28, 36, 48, 0.35), rgba(28, 36, 48, 0.75));
}
.ch-cloud__duel[data-mode="staff"] .ch-cloud__bar--impulse .ch-cloud__bar-fill {
  background: color-mix(in srgb, var(--campus-ink) 10%, transparent);
}
.ch-cloud__bar-label {
  margin-top: 10px;
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--campus-mark);
  text-align: center;
}
.ch-cloud__duel-sum {
  font-family: var(--nx-font-mono);
  font-weight: 600;
  font-size: clamp(1.45rem, 2.8vw, 1.9rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  color: var(--campus-ink);
  margin-bottom: 12px;
}
.ch-cloud__duel-lead {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--campus-ink-dim);
  max-width: 42ch;
}
.ch-cloud__duel-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.ch-cloud__duel-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--campus-ink);
}
.ch-cloud__duel-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 7px;
  height: 1px;
  background: var(--campus-ink);
}
.ch-cloud__duel-save {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--campus-ink-dim);
  padding: 14px 16px;
  border-radius: var(--nx-radius-md);
  border: 1px solid var(--campus-line-dim);
  background: color-mix(in srgb, var(--campus-impulse, #d4c4a8) 14%, transparent);
}
.ch-cloud__duel-save strong { color: var(--campus-ink); }

/* ---- Journey ---- */
.ch-cloud__journey {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-cloud__journey-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 24px;
  align-items: stretch;
}
.ch-cloud__process {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.ch-cloud__process > li { margin: 0; }
.ch-cloud__step {
  width: 100%;
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 20px 18px;
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-md);
  background: rgba(255, 255, 255, 0.28);
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition:
    border-color 220ms var(--nx-ease-out),
    background 220ms var(--nx-ease-out),
    transform 220ms var(--nx-ease-out);
}
.ch-cloud__step:hover {
  border-color: color-mix(in srgb, var(--campus-ink) 28%, transparent);
  transform: translateX(3px);
}
.ch-cloud__step.is-active {
  border-color: var(--campus-ink);
  background: color-mix(in srgb, var(--campus-ink) 6%, #fff);
}
[data-theme="dark"] .ch-cloud__step {
  background: rgba(255, 255, 255, 0.04);
}
[data-theme="dark"] .ch-cloud__step.is-active {
  background: rgba(255, 255, 255, 0.08);
}
.ch-cloud__step:focus-visible {
  outline: 2px solid var(--campus-ink);
  outline-offset: 2px;
}
.ch-cloud__step-num {
  flex-shrink: 0;
  font-family: var(--nx-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: color-mix(in srgb, var(--campus-ink) 45%, var(--campus-impulse, #d4c4a8));
}
.ch-cloud__step-body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}
.ch-cloud__step-title {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--campus-ink);
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.ch-cloud__step-sub {
  font-size: 13px;
  line-height: 1.45;
  color: var(--campus-ink-dim);
}
.ch-cloud__journey-panel {
  padding: 0;
  overflow: hidden;
  border-radius: var(--nx-radius-lg);
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.42);
  display: flex;
  flex-direction: column;
  min-height: 100%;
}
[data-theme="dark"] .ch-cloud__journey-panel {
  background: rgba(255, 255, 255, 0.04);
}
.ch-cloud__journey-time {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-bottom: 10px;
  font-variant-numeric: tabular-nums;
}
.ch-cloud__journey-title {
  margin: 0 0 12px;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  color: var(--campus-ink);
  line-height: 1.2;
  letter-spacing: -0.03em;
}
.ch-cloud__journey-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--campus-ink-dim);
  max-width: 40ch;
}

/* ---- FAQ ---- */
.ch-cloud__qs {
  margin-bottom: clamp(32px, 4vw, 44px);
}
.ch-cloud__q {
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-md);
  margin-bottom: 12px;
  background: rgba(255, 255, 255, 0.28);
  overflow: hidden;
}
[data-theme="dark"] .ch-cloud__q {
  background: rgba(255, 255, 255, 0.04);
}
.ch-cloud__q[open] {
  border-color: color-mix(in srgb, var(--campus-ink) 22%, transparent);
  background: rgba(255, 255, 255, 0.42);
}
.ch-cloud__q-sum {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.ch-cloud__q-sum::-webkit-details-marker { display: none; }
.ch-cloud__q-sum:focus-visible {
  outline: 2px solid var(--campus-ink);
  outline-offset: -2px;
}
.ch-cloud__q-num {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  font-weight: 600;
  color: var(--campus-mark);
}
.ch-cloud__q-title {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--campus-ink);
}
.ch-cloud__q-caret {
  font-size: 16px;
  color: var(--campus-mark);
  transition: transform 220ms var(--nx-ease-out);
}
.ch-cloud__q[open] .ch-cloud__q-caret {
  transform: rotate(180deg);
}
.ch-cloud__q-body {
  padding: 0 20px 20px;
  padding-left: calc(20px + 2ch + 14px);
  color: var(--campus-ink-dim);
  font-size: 15px;
  line-height: 1.65;
  max-width: 68ch;
}
.ch-cloud__q-body p { margin: 0; }
.ch-cloud__q-body strong { color: var(--campus-ink); font-weight: 600; }

/* ---- Footer CTA ---- */
.ch-cloud__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding: 24px 26px;
  margin-top: 8px;
  border-radius: var(--nx-radius-lg);
  border: 1px solid var(--campus-line-dim);
  background: color-mix(in srgb, var(--campus-ink) 4%, transparent);
}
.ch-cloud__foot-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}
.ch-cloud__foot-text strong {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  color: var(--campus-ink);
}
.ch-cloud__foot-text span {
  font-size: 13px;
  color: var(--campus-ink-dim);
}

/* Chapter heroes are hash targets (tabindex=-1) — no focus ring on jump */
body.has-nx-shell .ch-cloud__hero:focus {
  outline: none;
}

@media (max-width: 900px) {
  .ch-cloud__panel { width: 100%; }
  .ch-cloud__facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ch-cloud__rack-layout,
  .ch-cloud__duel-stage,
  .ch-cloud__journey-layout {
    grid-template-columns: 1fr;
  }
  .ch-cloud__duel-viz { min-height: 180px; aspect-ratio: 16 / 10; }
  .ch-cloud__bars {
    min-height: 160px;
    order: 2;
  }
  .ch-cloud__duel-copy { order: 3; }
  .ch-cloud__duel-viz { order: 1; }
  .ch-cloud__bar { min-height: 140px; }
  .ch-cloud__q-body { padding-left: 20px; }
  .ch-cloud__foot { align-items: flex-start; }}

@media (max-width: 560px) {
  .ch-cloud__facts,
  .ch-cloud__nodes { grid-template-columns: 1fr; }}

@media (prefers-reduced-motion: reduce) {
  .ch-cloud__q-caret,
  .ch-cloud__step,
  .ch-cloud__node,
  .ch-cloud__bar-fill,
  .ch-cloud__facts li,
  .ch-cloud__fact-media img { transition: none; }
  .ch-cloud__facts li:hover { transform: none; }
  .ch-cloud__facts li:hover .ch-cloud__fact-media img { transform: none; }
  .ch-cloud__node-panel.is-swap,
  .ch-cloud__journey-panel.is-swap { animation: none; }}

/* ==========================================
   Build Studio — articles #chapter-2
   Conversion-led product floor
   ========================================== */

body.has-nx-shell .chapter.chapter--studio {
  padding-top: clamp(28px, 4vw, 48px);
  padding-bottom: clamp(56px, 8vw, 96px);
}
body.has-nx-shell .chapter.chapter--studio::before { display: none; }

.ch-studio {
  position: relative;
  z-index: 2;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--nx-gutter);
}

.ch-studio__hero {
  display: flex;
  align-items: flex-end;
  padding: clamp(16px, 3vw, 28px) 0 clamp(28px, 4vw, 40px);
}
.ch-studio__panel {
  width: min(100%, 38rem);
  padding: clamp(24px, 3vw, 32px);
  background: color-mix(in srgb, var(--campus-glass-strong) 88%, #fff);
  backdrop-filter: blur(22px) saturate(1.15);
  -webkit-backdrop-filter: blur(22px) saturate(1.15);
  border: 1px solid var(--nx-border-glass);
  border-radius: var(--nx-radius-xl);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.55) inset,
    0 18px 48px rgba(10, 16, 24, 0.12);
}
[data-theme="dark"] .ch-studio__panel {
  background: color-mix(in srgb, var(--campus-glass-strong) 92%, #000);
}
.ch-studio__title {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.75rem, 3.6vw, 2.55rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--campus-ink);
  margin: 0 0 12px;
}
.ch-studio__support {
  margin: 0 0 16px;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--campus-ink-dim);
  max-width: 42ch;
}
.ch-studio__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 0;
  margin-bottom: 18px;
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--campus-ink-dim);
  font-variant-numeric: tabular-nums;
}
.ch-studio__price {
  color: var(--campus-ink);
  font-weight: 600;
}
.ch-studio__meta-sep {
  display: inline-block;
  width: 1px;
  height: 10px;
  margin: 0 10px;
  background: var(--campus-line-dim);
}
.ch-studio__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.ch-studio__sheet {
  margin-top: 4px;
  padding: clamp(36px, 5vw, 56px) clamp(24px, 4vw, 48px) clamp(36px, 5vw, 48px);
  background: rgba(247, 248, 250, 0.72);
  backdrop-filter: blur(18px) saturate(1.1);
  -webkit-backdrop-filter: blur(18px) saturate(1.1);
  border: 1px solid rgba(20, 28, 40, 0.08);
  border-radius: calc(var(--nx-radius-xl) + 4px);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.65) inset,
    0 24px 64px rgba(10, 16, 24, 0.08);
}
[data-theme="dark"] .ch-studio__sheet {
  background: rgba(16, 22, 32, 0.68);
  border-color: rgba(255, 255, 255, 0.08);
}

.ch-studio__section-head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 28px;
}
.ch-studio__section-title {
  margin: 0;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  color: var(--campus-ink);
  letter-spacing: -0.03em;
}
.ch-studio__section-note {
  margin: 0;
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--campus-mark);
}

/* Signals */
.ch-studio__signals {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-studio__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.ch-studio__facts li {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.42);
  border: 1px solid rgba(20, 28, 40, 0.1);
  border-radius: var(--nx-radius-md);
  transition: transform 220ms var(--nx-ease-out), border-color 220ms, box-shadow 220ms;
}
.ch-studio__facts li:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--campus-ink) 28%, transparent);
  box-shadow: 0 16px 36px rgba(10, 16, 24, 0.1);
}
[data-theme="dark"] .ch-studio__facts li {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
}
.ch-studio__fact-media {
  margin: 0;
  aspect-ratio: 1;
  overflow: hidden;
}
.ch-studio__fact-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 480ms var(--nx-ease-out);
}
.ch-studio__facts li:hover .ch-studio__fact-media img { transform: scale(1.04); }
.ch-studio__fact-k {
  font-family: var(--nx-font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--campus-mark);
  padding: 14px 16px 0;
}
.ch-studio__fact-v {
  font-family: var(--nx-font-mono);
  font-weight: 500;
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  font-variant-numeric: tabular-nums;
  color: var(--campus-ink);
  padding: 6px 16px 16px;
}

/* Format picker */
.ch-studio__format {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-studio__format-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: stretch;
}
.ch-studio__format-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.ch-studio__format-tab {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  min-height: 108px;
  padding: 18px 16px;
  text-align: left;
  cursor: pointer;
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-md);
  background: rgba(255, 255, 255, 0.28);
  color: var(--campus-ink);
  transition: border-color 200ms, background 200ms, transform 200ms, box-shadow 200ms;
}
.ch-studio__format-tab em {
  font-style: normal;
  font-family: var(--nx-font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-top: auto;
  padding-top: 8px;
}
.ch-studio__format-num {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--campus-mark);
}
.ch-studio__format-label {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.ch-studio__format-tab:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--campus-ink) 28%, transparent);
}
.ch-studio__format-tab.is-active {
  border-color: var(--campus-ink);
  background: color-mix(in srgb, var(--campus-ink) 6%, #fff);
  box-shadow: 0 12px 28px rgba(10, 16, 24, 0.08);
}
[data-theme="dark"] .ch-studio__format-tab { background: rgba(255,255,255,0.04); }
[data-theme="dark"] .ch-studio__format-tab.is-active { background: rgba(255,255,255,0.08); }

.ch-studio__format-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.72fr);
  gap: 0;
  align-items: stretch;
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-lg);
  overflow: hidden;
  background: #f4f5f7;
}
[data-theme="dark"] .ch-studio__format-stage {
  background: #121820;
}
.ch-studio__format-stage.is-swap,
.ch-studio__journey-panel.is-swap,
.ch-studio__ai-panel.is-swap {
  animation: chStudioSwap 280ms var(--nx-ease-out);
}
@keyframes chStudioSwap {
  from { opacity: 0.35; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}
.ch-studio__mock {
  margin: 0;
  min-width: 0;
  min-height: 320px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #0e1218;
  isolation: isolate;
  padding: 14px;
}
.ch-studio__mock img,
.ch-studio__viz img,
.ch-studio__vs-viz img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 180ms var(--nx-ease-out);
}
.ch-studio__mock img {
  width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
}
.ch-studio__mock img.is-fading,
.ch-studio__viz img.is-fading,
.ch-studio__vs-viz img.is-fading { opacity: 0.35; }

.ch-studio__format-copy {
  min-width: 0;
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0;
  background: #f7f8fa;
  border-left: 1px solid var(--campus-line-dim);
  color: var(--campus-ink);
  z-index: 1;
}
[data-theme="dark"] .ch-studio__format-copy {
  background: #161c26;
  border-left-color: rgba(255, 255, 255, 0.1);
}
.ch-studio__format-kicker {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-bottom: 8px;
}
.ch-studio__format-title {
  margin: 0 0 10px;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.3rem, 2.2vw, 1.6rem);
  letter-spacing: -0.03em;
  color: var(--campus-ink);
}
.ch-studio__format-body {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--campus-ink-dim);
  max-width: 52ch;
}
.ch-studio__format-points {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.ch-studio__format-points li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--campus-ink);
}
.ch-studio__format-points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 7px;
  height: 1px;
  background: var(--campus-ink);
}
.ch-studio__estimate {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 6px;
  padding: 16px;
  border-radius: var(--nx-radius-md);
  border: 1px solid rgba(20, 28, 40, 0.12);
  background: #fff;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7) inset;
}
[data-theme="dark"] .ch-studio__estimate {
  background: #0f141c;
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: none;
}
.ch-studio__estimate > div {
  min-width: 0;
}
.ch-studio__estimate-k {
  display: block;
  font-family: var(--nx-font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-bottom: 6px;
}
.ch-studio__estimate-v,
.ch-studio__estimate-t {
  display: block;
  font-family: var(--nx-font-mono);
  font-weight: 600;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--campus-ink);
  word-break: break-word;
}
.ch-studio__estimate .btn-nexus {
  grid-column: 1 / -1;
  justify-content: center;
  margin-top: 4px;
}

/* Journey */
.ch-studio__journey {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-studio__journey-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 22px;
}
.ch-studio__process {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.ch-studio__process > li { margin: 0; }
.ch-studio__step {
  width: 100%;
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 20px 18px;
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-md);
  background: rgba(255, 255, 255, 0.28);
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 200ms, background 200ms, transform 200ms;
}
.ch-studio__step:hover { transform: translateX(3px); border-color: color-mix(in srgb, var(--campus-ink) 28%, transparent); }
.ch-studio__step.is-active {
  border-color: var(--campus-ink);
  background: color-mix(in srgb, var(--campus-ink) 6%, #fff);
}
[data-theme="dark"] .ch-studio__step { background: rgba(255,255,255,0.04); }
[data-theme="dark"] .ch-studio__step.is-active { background: rgba(255,255,255,0.08); }
.ch-studio__step-num {
  font-family: var(--nx-font-mono);
  font-size: 12px;
  font-weight: 600;
  color: color-mix(in srgb, var(--campus-ink) 45%, var(--campus-impulse, #d4c4a8));
}
.ch-studio__step-body { display: flex; flex-direction: column; gap: 4px; }
.ch-studio__step-title {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--campus-ink);
}
.ch-studio__step-sub { font-size: 13px; color: var(--campus-ink-dim); }
.ch-studio__journey-panel {
  padding: 0;
  overflow: hidden;
  border-radius: var(--nx-radius-lg);
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.42);
  display: flex;
  flex-direction: column;
}
[data-theme="dark"] .ch-studio__journey-panel { background: rgba(255,255,255,0.04); }
.ch-studio__viz {
  margin: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: color-mix(in srgb, var(--campus-ink) 8%, transparent);
}
.ch-studio__journey-copy { padding: 22px; }
.ch-studio__journey-time {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-bottom: 10px;
  font-variant-numeric: tabular-nums;
}
.ch-studio__journey-title {
  margin: 0 0 12px;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  letter-spacing: -0.03em;
  color: var(--campus-ink);
}
.ch-studio__journey-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--campus-ink-dim);
  max-width: 42ch;
}

/* VS */
.ch-studio__vs {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-studio__vs-toggle {
  display: inline-flex;
  padding: 4px;
  margin-bottom: 24px;
  border-radius: 999px;
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.35);
  gap: 4px;
}
[data-theme="dark"] .ch-studio__vs-toggle { background: rgba(255,255,255,0.05); }
.ch-studio__vs-btn {
  border: 0;
  background: transparent;
  color: var(--campus-ink-dim);
  font-family: var(--nx-font-body);
  font-size: 13px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: 999px;
  cursor: pointer;
}
.ch-studio__vs-btn.is-active {
  background: var(--campus-ink);
  color: #f4f6f8;
}
[data-theme="dark"] .ch-studio__vs-btn.is-active {
  background: var(--campus-impulse, #d4c4a8);
  color: #14181e;
}
.ch-studio__vs-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 22px;
  align-items: stretch;
}
.ch-studio__vs-viz {
  margin: 0;
  min-height: 240px;
  border-radius: var(--nx-radius-lg);
  overflow: hidden;
  border: 1px solid var(--campus-line-dim);
}
.ch-studio__vs-sum {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.25rem, 2.2vw, 1.55rem);
  letter-spacing: -0.03em;
  color: var(--campus-ink);
  margin-bottom: 16px;
  line-height: 1.25;
}
.ch-studio__vs-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.ch-studio__vs-list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  color: var(--campus-ink);
  line-height: 1.45;
}
.ch-studio__vs-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 7px;
  height: 1px;
  background: var(--campus-ink);
}
.ch-studio__vs-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--campus-ink-dim);
  padding: 14px 16px;
  border-radius: var(--nx-radius-md);
  border: 1px solid var(--campus-line-dim);
  background: color-mix(in srgb, var(--campus-impulse, #d4c4a8) 12%, transparent);
}
.ch-studio__vs[data-mode="template"] .ch-studio__vs-note {
  background: color-mix(in srgb, var(--campus-ink) 5%, transparent);
}

/* AI */
.ch-studio__ai {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-studio__ai-layout {
  display: grid;
  gap: 18px;
}
.ch-studio__ai-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.ch-studio__ai-tab {
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.28);
  color: var(--campus-ink-dim);
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 200ms, color 200ms, border-color 200ms;
}
.ch-studio__ai-tab.is-active {
  background: var(--campus-ink);
  border-color: var(--campus-ink);
  color: #f4f6f8;
}
[data-theme="dark"] .ch-studio__ai-tab.is-active {
  background: var(--campus-impulse, #d4c4a8);
  border-color: var(--campus-impulse, #d4c4a8);
  color: #14181e;
}
.ch-studio__ai-panel {
  padding: 24px 26px;
  border-radius: var(--nx-radius-lg);
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.42);
}
[data-theme="dark"] .ch-studio__ai-panel { background: rgba(255,255,255,0.04); }
.ch-studio__ai-title {
  margin: 0 0 10px;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  color: var(--campus-ink);
}
.ch-studio__ai-body {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--campus-ink-dim);
  max-width: 62ch;
}
.ch-studio__ai-gain {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--campus-ink);
  padding: 12px 14px;
  border-radius: var(--nx-radius-md);
  background: color-mix(in srgb, var(--campus-impulse, #d4c4a8) 16%, transparent);
  border: 1px solid var(--campus-line-dim);
  display: inline-block;
}
.ch-studio__ai-gain strong {
  font-family: var(--nx-font-mono);
  font-variant-numeric: tabular-nums;
}

/* FAQ + foot */
.ch-studio__qs { margin-bottom: clamp(32px, 4vw, 44px); }
.ch-studio__q {
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-md);
  margin-bottom: 12px;
  background: rgba(255, 255, 255, 0.28);
  overflow: hidden;
}
[data-theme="dark"] .ch-studio__q { background: rgba(255,255,255,0.04); }
.ch-studio__q[open] {
  border-color: color-mix(in srgb, var(--campus-ink) 22%, transparent);
  background: rgba(255, 255, 255, 0.42);
}
.ch-studio__q-sum {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}
.ch-studio__q-sum::-webkit-details-marker { display: none; }
.ch-studio__q-num {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  font-weight: 600;
  color: var(--campus-mark);
}
.ch-studio__q-title {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  letter-spacing: -0.02em;
  color: var(--campus-ink);
}
.ch-studio__q-caret {
  font-size: 16px;
  color: var(--campus-mark);
  transition: transform 220ms var(--nx-ease-out);
}
.ch-studio__q[open] .ch-studio__q-caret { transform: rotate(180deg); }
.ch-studio__q-body {
  padding: 0 20px 20px;
  padding-left: calc(20px + 2ch + 14px);
  color: var(--campus-ink-dim);
  font-size: 15px;
  line-height: 1.65;
  max-width: 68ch;
}
.ch-studio__q-body p { margin: 0; }
.ch-studio__q-body strong { color: var(--campus-ink); }

.ch-studio__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding: 24px 26px;
  border-radius: var(--nx-radius-lg);
  border: 1px solid var(--campus-line-dim);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--campus-impulse, #d4c4a8) 18%, transparent), transparent 55%),
    color-mix(in srgb, var(--campus-ink) 4%, transparent);
}
.ch-studio__foot-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.ch-studio__foot-text strong {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--campus-ink);
}
.ch-studio__foot-text span {
  font-size: 13px;
  color: var(--campus-ink-dim);
}

body.has-nx-shell .ch-studio__hero:focus {
  outline: none;
}

@media (max-width: 900px) {
  .ch-studio__panel { width: 100%; }
  .ch-studio__facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ch-studio__format-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ch-studio__format-stage,
  .ch-studio__journey-layout,
  .ch-studio__vs-stage {
    grid-template-columns: 1fr;
  }
  .ch-studio__format-copy {
    border-left: 0;
    border-top: 1px solid var(--campus-line-dim);
  }
  .ch-studio__mock {
    min-height: 240px;
    padding: 12px;
  }
  .ch-studio__q-body { padding-left: 20px; }
  .ch-studio__foot { align-items: flex-start; }}
@media (max-width: 560px) {
  .ch-studio__facts,
  .ch-studio__format-tabs { grid-template-columns: 1fr; }}
@media (prefers-reduced-motion: reduce) {
  .ch-studio__facts li,
  .ch-studio__fact-media img,
  .ch-studio__format-tab,
  .ch-studio__step,
  .ch-studio__q-caret { transition: none; }
  .ch-studio__facts li:hover { transform: none; }
  .ch-studio__format-stage.is-swap,
  .ch-studio__journey-panel.is-swap,
  .ch-studio__ai-panel.is-swap { animation: none; }}

/* ==========================================
   Service Desk — articles #chapter-3
   Managed support conversion floor
   ========================================== */

body.has-nx-shell .chapter.chapter--desk {
  padding-top: clamp(28px, 4vw, 48px);
  padding-bottom: clamp(56px, 8vw, 96px);
}
body.has-nx-shell .chapter.chapter--desk::before { display: none; }

.ch-desk {
  position: relative;
  z-index: 2;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--nx-gutter);
}

.ch-desk__hero {
  display: flex;
  align-items: flex-end;
  padding: clamp(16px, 3vw, 28px) 0 clamp(28px, 4vw, 40px);
}
.ch-desk__panel {
  width: min(100%, 38rem);
  padding: clamp(24px, 3vw, 32px);
  background: color-mix(in srgb, var(--campus-glass-strong) 88%, #fff);
  backdrop-filter: blur(22px) saturate(1.15);
  -webkit-backdrop-filter: blur(22px) saturate(1.15);
  border: 1px solid var(--nx-border-glass);
  border-radius: var(--nx-radius-xl);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.55) inset,
    0 18px 48px rgba(10, 16, 24, 0.12);
}
[data-theme="dark"] .ch-desk__panel {
  background: color-mix(in srgb, var(--campus-glass-strong) 92%, #000);
}
.ch-desk__title {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.75rem, 3.6vw, 2.55rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--campus-ink);
  margin: 0 0 12px;
}
.ch-desk__support {
  margin: 0 0 16px;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--campus-ink-dim);
  max-width: 42ch;
}
.ch-desk__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 0;
  margin-bottom: 18px;
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--campus-ink-dim);
  font-variant-numeric: tabular-nums;
}
.ch-desk__price {
  color: var(--campus-ink);
  font-weight: 600;
}
.ch-desk__meta-sep {
  display: inline-block;
  width: 1px;
  height: 10px;
  margin: 0 10px;
  background: var(--campus-line-dim);
}
.ch-desk__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.ch-desk__sheet {
  margin-top: 4px;
  padding: clamp(36px, 5vw, 56px) clamp(24px, 4vw, 48px) clamp(36px, 5vw, 48px);
  background: rgba(247, 248, 250, 0.72);
  backdrop-filter: blur(18px) saturate(1.1);
  -webkit-backdrop-filter: blur(18px) saturate(1.1);
  border: 1px solid rgba(20, 28, 40, 0.08);
  border-radius: calc(var(--nx-radius-xl) + 4px);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.65) inset,
    0 24px 64px rgba(10, 16, 24, 0.08);
}
[data-theme="dark"] .ch-desk__sheet {
  background: rgba(16, 22, 32, 0.68);
  border-color: rgba(255, 255, 255, 0.08);
}

.ch-desk__section-head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 28px;
}
.ch-desk__section-title {
  margin: 0;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  color: var(--campus-ink);
  letter-spacing: -0.03em;
}
.ch-desk__section-note {
  margin: 0;
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--campus-mark);
}

/* Signals */
.ch-desk__signals {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-desk__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.ch-desk__facts li {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.42);
  border: 1px solid rgba(20, 28, 40, 0.1);
  border-radius: var(--nx-radius-md);
  transition: transform 220ms var(--nx-ease-out), border-color 220ms, box-shadow 220ms;
}
.ch-desk__facts li:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--campus-ink) 28%, transparent);
  box-shadow: 0 16px 36px rgba(10, 16, 24, 0.1);
}
[data-theme="dark"] .ch-desk__facts li {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
}
.ch-desk__fact-media {
  margin: 0;
  aspect-ratio: 1;
  overflow: hidden;
}
.ch-desk__fact-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 480ms var(--nx-ease-out);
}
.ch-desk__facts li:hover .ch-desk__fact-media img { transform: scale(1.04); }
.ch-desk__fact-k {
  font-family: var(--nx-font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--campus-mark);
  padding: 14px 16px 0;
}
.ch-desk__fact-v {
  font-family: var(--nx-font-mono);
  font-weight: 500;
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  font-variant-numeric: tabular-nums;
  color: var(--campus-ink);
  padding: 6px 16px 16px;
}

/* Format picker */
.ch-desk__plan {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-desk__plan-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: stretch;
}
.ch-desk__plan-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.ch-desk__plan-tab {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  min-height: 108px;
  padding: 18px 16px;
  text-align: left;
  cursor: pointer;
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-md);
  background: rgba(255, 255, 255, 0.28);
  color: var(--campus-ink);
  transition: border-color 200ms, background 200ms, transform 200ms, box-shadow 200ms;
}
.ch-desk__plan-tab em {
  font-style: normal;
  font-family: var(--nx-font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-top: auto;
  padding-top: 8px;
}
.ch-desk__plan-num {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--campus-mark);
}
.ch-desk__plan-label {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.ch-desk__plan-tab:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--campus-ink) 28%, transparent);
}
.ch-desk__plan-tab.is-active {
  border-color: var(--campus-ink);
  background: color-mix(in srgb, var(--campus-ink) 6%, #fff);
  box-shadow: 0 12px 28px rgba(10, 16, 24, 0.08);
}
[data-theme="dark"] .ch-desk__plan-tab { background: rgba(255,255,255,0.04); }
[data-theme="dark"] .ch-desk__plan-tab.is-active { background: rgba(255,255,255,0.08); }

.ch-desk__plan-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.72fr);
  gap: 0;
  align-items: stretch;
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-lg);
  overflow: hidden;
  background: #f4f5f7;
}
[data-theme="dark"] .ch-desk__plan-stage {
  background: #121820;
}
.ch-desk__plan-stage.is-swap,
.ch-desk__journey-panel.is-swap,
.ch-desk__ai-panel.is-swap {
  animation: chDeskSwap 280ms var(--nx-ease-out);
}
@keyframes chDeskSwap {
  from { opacity: 0.35; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}
.ch-desk__mock {
  margin: 0;
  min-width: 0;
  min-height: 320px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #0e1218;
  isolation: isolate;
  padding: 14px;
}
.ch-desk__mock img,
.ch-desk__viz img,
.ch-desk__vs-viz img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 180ms var(--nx-ease-out);
}
.ch-desk__mock img {
  width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
}
.ch-desk__mock img.is-fading,
.ch-desk__viz img.is-fading,
.ch-desk__vs-viz img.is-fading { opacity: 0.35; }

.ch-desk__plan-copy {
  min-width: 0;
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0;
  background: #f7f8fa;
  border-left: 1px solid var(--campus-line-dim);
  color: var(--campus-ink);
  z-index: 1;
}
[data-theme="dark"] .ch-desk__plan-copy {
  background: #161c26;
  border-left-color: rgba(255, 255, 255, 0.1);
}
.ch-desk__plan-kicker {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-bottom: 8px;
}
.ch-desk__plan-title {
  margin: 0 0 10px;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.3rem, 2.2vw, 1.6rem);
  letter-spacing: -0.03em;
  color: var(--campus-ink);
}
.ch-desk__plan-body {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--campus-ink-dim);
  max-width: 52ch;
}
.ch-desk__plan-points {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.ch-desk__plan-points li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--campus-ink);
}
.ch-desk__plan-points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 7px;
  height: 1px;
  background: var(--campus-ink);
}
.ch-desk__estimate {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 6px;
  padding: 16px;
  border-radius: var(--nx-radius-md);
  border: 1px solid rgba(20, 28, 40, 0.12);
  background: #fff;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7) inset;
}
[data-theme="dark"] .ch-desk__estimate {
  background: #0f141c;
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: none;
}
.ch-desk__estimate > div {
  min-width: 0;
}
.ch-desk__estimate-k {
  display: block;
  font-family: var(--nx-font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-bottom: 6px;
}
.ch-desk__estimate-v,
.ch-desk__estimate-t {
  display: block;
  font-family: var(--nx-font-mono);
  font-weight: 600;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--campus-ink);
  word-break: break-word;
}
.ch-desk__estimate .btn-nexus {
  grid-column: 1 / -1;
  justify-content: center;
  margin-top: 4px;
}

/* Journey */
.ch-desk__journey {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-desk__journey-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 22px;
}
.ch-desk__process {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.ch-desk__process > li { margin: 0; }
.ch-desk__step {
  width: 100%;
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 20px 18px;
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-md);
  background: rgba(255, 255, 255, 0.28);
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 200ms, background 200ms, transform 200ms;
}
.ch-desk__step:hover { transform: translateX(3px); border-color: color-mix(in srgb, var(--campus-ink) 28%, transparent); }
.ch-desk__step.is-active {
  border-color: var(--campus-ink);
  background: color-mix(in srgb, var(--campus-ink) 6%, #fff);
}
[data-theme="dark"] .ch-desk__step { background: rgba(255,255,255,0.04); }
[data-theme="dark"] .ch-desk__step.is-active { background: rgba(255,255,255,0.08); }
.ch-desk__step-num {
  font-family: var(--nx-font-mono);
  font-size: 12px;
  font-weight: 600;
  color: color-mix(in srgb, var(--campus-ink) 45%, var(--campus-impulse, #d4c4a8));
}
.ch-desk__step-body { display: flex; flex-direction: column; gap: 4px; }
.ch-desk__step-title {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--campus-ink);
}
.ch-desk__step-sub { font-size: 13px; color: var(--campus-ink-dim); }
.ch-desk__journey-panel {
  padding: 0;
  overflow: hidden;
  border-radius: var(--nx-radius-lg);
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.42);
  display: flex;
  flex-direction: column;
}
[data-theme="dark"] .ch-desk__journey-panel { background: rgba(255,255,255,0.04); }
.ch-desk__viz {
  margin: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: color-mix(in srgb, var(--campus-ink) 8%, transparent);
}
.ch-desk__journey-copy { padding: 22px; }
.ch-desk__journey-time {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-bottom: 10px;
  font-variant-numeric: tabular-nums;
}
.ch-desk__journey-title {
  margin: 0 0 12px;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  letter-spacing: -0.03em;
  color: var(--campus-ink);
}
.ch-desk__journey-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--campus-ink-dim);
  max-width: 42ch;
}

/* VS */
.ch-desk__vs {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-desk__vs-toggle {
  display: inline-flex;
  padding: 4px;
  margin-bottom: 24px;
  border-radius: 999px;
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.35);
  gap: 4px;
}
[data-theme="dark"] .ch-desk__vs-toggle { background: rgba(255,255,255,0.05); }
.ch-desk__vs-btn {
  border: 0;
  background: transparent;
  color: var(--campus-ink-dim);
  font-family: var(--nx-font-body);
  font-size: 13px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: 999px;
  cursor: pointer;
}
.ch-desk__vs-btn.is-active {
  background: var(--campus-ink);
  color: #f4f6f8;
}
[data-theme="dark"] .ch-desk__vs-btn.is-active {
  background: var(--campus-impulse, #d4c4a8);
  color: #14181e;
}
.ch-desk__vs-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 22px;
  align-items: stretch;
}
.ch-desk__vs-viz {
  margin: 0;
  min-height: 240px;
  border-radius: var(--nx-radius-lg);
  overflow: hidden;
  border: 1px solid var(--campus-line-dim);
}
.ch-desk__vs-sum {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.25rem, 2.2vw, 1.55rem);
  letter-spacing: -0.03em;
  color: var(--campus-ink);
  margin-bottom: 16px;
  line-height: 1.25;
}
.ch-desk__vs-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.ch-desk__vs-list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  color: var(--campus-ink);
  line-height: 1.45;
}
.ch-desk__vs-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 7px;
  height: 1px;
  background: var(--campus-ink);
}
.ch-desk__vs-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--campus-ink-dim);
  padding: 14px 16px;
  border-radius: var(--nx-radius-md);
  border: 1px solid var(--campus-line-dim);
  background: color-mix(in srgb, var(--campus-impulse, #d4c4a8) 12%, transparent);
}
.ch-desk__vs[data-mode="template"] .ch-desk__vs-note {
  background: color-mix(in srgb, var(--campus-ink) 5%, transparent);
}

/* AI */
.ch-desk__ai {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-desk__ai-layout {
  display: grid;
  gap: 18px;
}
.ch-desk__ai-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.ch-desk__ai-tab {
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.28);
  color: var(--campus-ink-dim);
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 200ms, color 200ms, border-color 200ms;
}
.ch-desk__ai-tab.is-active {
  background: var(--campus-ink);
  border-color: var(--campus-ink);
  color: #f4f6f8;
}
[data-theme="dark"] .ch-desk__ai-tab.is-active {
  background: var(--campus-impulse, #d4c4a8);
  border-color: var(--campus-impulse, #d4c4a8);
  color: #14181e;
}
.ch-desk__ai-panel {
  padding: 24px 26px;
  border-radius: var(--nx-radius-lg);
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.42);
}
[data-theme="dark"] .ch-desk__ai-panel { background: rgba(255,255,255,0.04); }
.ch-desk__ai-title {
  margin: 0 0 10px;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  color: var(--campus-ink);
}
.ch-desk__ai-body {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--campus-ink-dim);
  max-width: 62ch;
}
.ch-desk__ai-gain {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--campus-ink);
  padding: 12px 14px;
  border-radius: var(--nx-radius-md);
  background: color-mix(in srgb, var(--campus-impulse, #d4c4a8) 16%, transparent);
  border: 1px solid var(--campus-line-dim);
  display: inline-block;
}
.ch-desk__ai-gain strong {
  font-family: var(--nx-font-mono);
  font-variant-numeric: tabular-nums;
}

/* FAQ + foot */
.ch-desk__qs { margin-bottom: clamp(32px, 4vw, 44px); }
.ch-desk__q {
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-md);
  margin-bottom: 12px;
  background: rgba(255, 255, 255, 0.28);
  overflow: hidden;
}
[data-theme="dark"] .ch-desk__q { background: rgba(255,255,255,0.04); }
.ch-desk__q[open] {
  border-color: color-mix(in srgb, var(--campus-ink) 22%, transparent);
  background: rgba(255, 255, 255, 0.42);
}
.ch-desk__q-sum {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}
.ch-desk__q-sum::-webkit-details-marker { display: none; }
.ch-desk__q-num {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  font-weight: 600;
  color: var(--campus-mark);
}
.ch-desk__q-title {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  letter-spacing: -0.02em;
  color: var(--campus-ink);
}
.ch-desk__q-caret {
  font-size: 16px;
  color: var(--campus-mark);
  transition: transform 220ms var(--nx-ease-out);
}
.ch-desk__q[open] .ch-desk__q-caret { transform: rotate(180deg); }
.ch-desk__q-body {
  padding: 0 20px 20px;
  padding-left: calc(20px + 2ch + 14px);
  color: var(--campus-ink-dim);
  font-size: 15px;
  line-height: 1.65;
  max-width: 68ch;
}
.ch-desk__q-body p { margin: 0; }
.ch-desk__q-body strong { color: var(--campus-ink); }

.ch-desk__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding: 24px 26px;
  border-radius: var(--nx-radius-lg);
  border: 1px solid var(--campus-line-dim);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--campus-impulse, #d4c4a8) 18%, transparent), transparent 55%),
    color-mix(in srgb, var(--campus-ink) 4%, transparent);
}
.ch-desk__foot-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.ch-desk__foot-text strong {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--campus-ink);
}
.ch-desk__foot-text span {
  font-size: 13px;
  color: var(--campus-ink-dim);
}

body.has-nx-shell .ch-desk__hero:focus {
  outline: none;
}

@media (max-width: 900px) {
  .ch-desk__panel { width: 100%; }
  .ch-desk__facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ch-desk__plan-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ch-desk__plan-stage,
  .ch-desk__journey-layout,
  .ch-desk__vs-stage {
    grid-template-columns: 1fr;
  }
  .ch-desk__plan-copy {
    border-left: 0;
    border-top: 1px solid var(--campus-line-dim);
  }
  .ch-desk__mock {
    min-height: 240px;
    padding: 12px;
  }
  .ch-desk__q-body { padding-left: 20px; }
  .ch-desk__foot { align-items: flex-start; }}
@media (max-width: 560px) {
  .ch-desk__facts,
  .ch-desk__plan-tabs { grid-template-columns: 1fr; }}
@media (prefers-reduced-motion: reduce) {
  .ch-desk__facts li,
  .ch-desk__fact-media img,
  .ch-desk__plan-tab,
  .ch-desk__step,
  .ch-desk__q-caret { transition: none; }
  .ch-desk__facts li:hover { transform: none; }
  .ch-desk__plan-stage.is-swap,
  .ch-desk__journey-panel.is-swap,
  .ch-desk__ai-panel.is-swap { animation: none; }}

/* ==========================================
   Security Gallery — articles #chapter-4
   Video + telephony conversion floor
   ========================================== */

body.has-nx-shell .chapter.chapter--sec {
  padding-top: clamp(28px, 4vw, 48px);
  padding-bottom: clamp(56px, 8vw, 96px);
}
body.has-nx-shell .chapter.chapter--sec::before { display: none; }

.ch-sec {
  position: relative;
  z-index: 2;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--nx-gutter);
}

.ch-sec__hero {
  display: flex;
  align-items: flex-end;
  padding: clamp(16px, 3vw, 28px) 0 clamp(28px, 4vw, 40px);
}
.ch-sec__panel {
  width: min(100%, 38rem);
  padding: clamp(24px, 3vw, 32px);
  background: color-mix(in srgb, var(--campus-glass-strong) 88%, #fff);
  backdrop-filter: blur(22px) saturate(1.15);
  -webkit-backdrop-filter: blur(22px) saturate(1.15);
  border: 1px solid var(--nx-border-glass);
  border-radius: var(--nx-radius-xl);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.55) inset,
    0 18px 48px rgba(10, 16, 24, 0.12);
}
[data-theme="dark"] .ch-sec__panel {
  background: color-mix(in srgb, var(--campus-glass-strong) 92%, #000);
}
.ch-sec__title {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.75rem, 3.6vw, 2.55rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--campus-ink);
  margin: 0 0 12px;
}
.ch-sec__support {
  margin: 0 0 16px;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--campus-ink-dim);
  max-width: 42ch;
}
.ch-sec__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 0;
  margin-bottom: 18px;
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--campus-ink-dim);
  font-variant-numeric: tabular-nums;
}
.ch-sec__price {
  color: var(--campus-ink);
  font-weight: 600;
}
.ch-sec__meta-sep {
  display: inline-block;
  width: 1px;
  height: 10px;
  margin: 0 10px;
  background: var(--campus-line-dim);
}
.ch-sec__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.ch-sec__sheet {
  margin-top: 4px;
  padding: clamp(36px, 5vw, 56px) clamp(24px, 4vw, 48px) clamp(36px, 5vw, 48px);
  background: rgba(247, 248, 250, 0.72);
  backdrop-filter: blur(18px) saturate(1.1);
  -webkit-backdrop-filter: blur(18px) saturate(1.1);
  border: 1px solid rgba(20, 28, 40, 0.08);
  border-radius: calc(var(--nx-radius-xl) + 4px);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.65) inset,
    0 24px 64px rgba(10, 16, 24, 0.08);
}
[data-theme="dark"] .ch-sec__sheet {
  background: rgba(16, 22, 32, 0.68);
  border-color: rgba(255, 255, 255, 0.08);
}

.ch-sec__section-head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 28px;
}
.ch-sec__section-title {
  margin: 0;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  color: var(--campus-ink);
  letter-spacing: -0.03em;
}
.ch-sec__section-note {
  margin: 0;
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--campus-mark);
}

/* Signals */
.ch-sec__signals {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-sec__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.ch-sec__facts li {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.42);
  border: 1px solid rgba(20, 28, 40, 0.1);
  border-radius: var(--nx-radius-md);
  transition: transform 220ms var(--nx-ease-out), border-color 220ms, box-shadow 220ms;
}
.ch-sec__facts li:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--campus-ink) 28%, transparent);
  box-shadow: 0 16px 36px rgba(10, 16, 24, 0.1);
}
[data-theme="dark"] .ch-sec__facts li {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
}
.ch-sec__fact-media {
  margin: 0;
  aspect-ratio: 1;
  overflow: hidden;
}
.ch-sec__fact-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 480ms var(--nx-ease-out);
}
.ch-sec__facts li:hover .ch-sec__fact-media img { transform: scale(1.04); }
.ch-sec__fact-k {
  font-family: var(--nx-font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--campus-mark);
  padding: 14px 16px 0;
}
.ch-sec__fact-v {
  font-family: var(--nx-font-mono);
  font-weight: 500;
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  font-variant-numeric: tabular-nums;
  color: var(--campus-ink);
  padding: 6px 16px 16px;
}

/* Format picker */
.ch-sec__plan {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-sec__plan-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: stretch;
}
.ch-sec__plan-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.ch-sec__plan-tab {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  min-height: 108px;
  padding: 18px 16px;
  text-align: left;
  cursor: pointer;
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-md);
  background: rgba(255, 255, 255, 0.28);
  color: var(--campus-ink);
  transition: border-color 200ms, background 200ms, transform 200ms, box-shadow 200ms;
}
.ch-sec__plan-tab em {
  font-style: normal;
  font-family: var(--nx-font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-top: auto;
  padding-top: 8px;
}
.ch-sec__plan-num {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--campus-mark);
}
.ch-sec__plan-label {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.ch-sec__plan-tab:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--campus-ink) 28%, transparent);
}
.ch-sec__plan-tab.is-active {
  border-color: var(--campus-ink);
  background: color-mix(in srgb, var(--campus-ink) 6%, #fff);
  box-shadow: 0 12px 28px rgba(10, 16, 24, 0.08);
}
[data-theme="dark"] .ch-sec__plan-tab { background: rgba(255,255,255,0.04); }
[data-theme="dark"] .ch-sec__plan-tab.is-active { background: rgba(255,255,255,0.08); }

.ch-sec__plan-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.72fr);
  gap: 0;
  align-items: stretch;
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-lg);
  overflow: hidden;
  background: #f4f5f7;
}
[data-theme="dark"] .ch-sec__plan-stage {
  background: #121820;
}
.ch-sec__plan-stage.is-swap,
.ch-sec__journey-panel.is-swap,
.ch-sec__ai-panel.is-swap {
  animation: chSecSwap 280ms var(--nx-ease-out);
}
@keyframes chSecSwap {
  from { opacity: 0.35; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}
.ch-sec__mock {
  margin: 0;
  min-width: 0;
  min-height: 320px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #0e1218;
  isolation: isolate;
  padding: 14px;
}
.ch-sec__mock img,
.ch-sec__viz img,
.ch-sec__vs-viz img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 180ms var(--nx-ease-out);
}
.ch-sec__mock img {
  width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
}
.ch-sec__mock img.is-fading,
.ch-sec__viz img.is-fading,
.ch-sec__vs-viz img.is-fading { opacity: 0.35; }

.ch-sec__plan-copy {
  min-width: 0;
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0;
  background: #f7f8fa;
  border-left: 1px solid var(--campus-line-dim);
  color: var(--campus-ink);
  z-index: 1;
}
[data-theme="dark"] .ch-sec__plan-copy {
  background: #161c26;
  border-left-color: rgba(255, 255, 255, 0.1);
}
.ch-sec__plan-kicker {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-bottom: 8px;
}
.ch-sec__plan-title {
  margin: 0 0 10px;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.3rem, 2.2vw, 1.6rem);
  letter-spacing: -0.03em;
  color: var(--campus-ink);
}
.ch-sec__plan-body {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--campus-ink-dim);
  max-width: 52ch;
}
.ch-sec__plan-points {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.ch-sec__plan-points li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--campus-ink);
}
.ch-sec__plan-points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 7px;
  height: 1px;
  background: var(--campus-ink);
}
.ch-sec__estimate {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 6px;
  padding: 16px;
  border-radius: var(--nx-radius-md);
  border: 1px solid rgba(20, 28, 40, 0.12);
  background: #fff;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7) inset;
}
[data-theme="dark"] .ch-sec__estimate {
  background: #0f141c;
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: none;
}
.ch-sec__estimate > div {
  min-width: 0;
}
.ch-sec__estimate-k {
  display: block;
  font-family: var(--nx-font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-bottom: 6px;
}
.ch-sec__estimate-v,
.ch-sec__estimate-t {
  display: block;
  font-family: var(--nx-font-mono);
  font-weight: 600;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--campus-ink);
  word-break: break-word;
}
.ch-sec__estimate .btn-nexus {
  grid-column: 1 / -1;
  justify-content: center;
  margin-top: 4px;
}

/* Journey */
.ch-sec__journey {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-sec__journey-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 22px;
}
.ch-sec__process {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.ch-sec__process > li { margin: 0; }
.ch-sec__step {
  width: 100%;
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 20px 18px;
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-md);
  background: rgba(255, 255, 255, 0.28);
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 200ms, background 200ms, transform 200ms;
}
.ch-sec__step:hover { transform: translateX(3px); border-color: color-mix(in srgb, var(--campus-ink) 28%, transparent); }
.ch-sec__step.is-active {
  border-color: var(--campus-ink);
  background: color-mix(in srgb, var(--campus-ink) 6%, #fff);
}
[data-theme="dark"] .ch-sec__step { background: rgba(255,255,255,0.04); }
[data-theme="dark"] .ch-sec__step.is-active { background: rgba(255,255,255,0.08); }
.ch-sec__step-num {
  font-family: var(--nx-font-mono);
  font-size: 12px;
  font-weight: 600;
  color: color-mix(in srgb, var(--campus-ink) 45%, var(--campus-impulse, #d4c4a8));
}
.ch-sec__step-body { display: flex; flex-direction: column; gap: 4px; }
.ch-sec__step-title {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--campus-ink);
}
.ch-sec__step-sub { font-size: 13px; color: var(--campus-ink-dim); }
.ch-sec__journey-panel {
  padding: 0;
  overflow: hidden;
  border-radius: var(--nx-radius-lg);
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.42);
  display: flex;
  flex-direction: column;
}
[data-theme="dark"] .ch-sec__journey-panel { background: rgba(255,255,255,0.04); }
.ch-sec__viz {
  margin: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: color-mix(in srgb, var(--campus-ink) 8%, transparent);
}
.ch-sec__journey-copy { padding: 22px; }
.ch-sec__journey-time {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-bottom: 10px;
  font-variant-numeric: tabular-nums;
}
.ch-sec__journey-title {
  margin: 0 0 12px;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  letter-spacing: -0.03em;
  color: var(--campus-ink);
}
.ch-sec__journey-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--campus-ink-dim);
  max-width: 42ch;
}

/* VS */
.ch-sec__vs {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-sec__vs-toggle {
  display: inline-flex;
  padding: 4px;
  margin-bottom: 24px;
  border-radius: 999px;
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.35);
  gap: 4px;
}
[data-theme="dark"] .ch-sec__vs-toggle { background: rgba(255,255,255,0.05); }
.ch-sec__vs-btn {
  border: 0;
  background: transparent;
  color: var(--campus-ink-dim);
  font-family: var(--nx-font-body);
  font-size: 13px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: 999px;
  cursor: pointer;
}
.ch-sec__vs-btn.is-active {
  background: var(--campus-ink);
  color: #f4f6f8;
}
[data-theme="dark"] .ch-sec__vs-btn.is-active {
  background: var(--campus-impulse, #d4c4a8);
  color: #14181e;
}
.ch-sec__vs-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 22px;
  align-items: stretch;
}
.ch-sec__vs-viz {
  margin: 0;
  min-height: 240px;
  border-radius: var(--nx-radius-lg);
  overflow: hidden;
  border: 1px solid var(--campus-line-dim);
}
.ch-sec__vs-sum {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.25rem, 2.2vw, 1.55rem);
  letter-spacing: -0.03em;
  color: var(--campus-ink);
  margin-bottom: 16px;
  line-height: 1.25;
}
.ch-sec__vs-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.ch-sec__vs-list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  color: var(--campus-ink);
  line-height: 1.45;
}
.ch-sec__vs-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 7px;
  height: 1px;
  background: var(--campus-ink);
}
.ch-sec__vs-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--campus-ink-dim);
  padding: 14px 16px;
  border-radius: var(--nx-radius-md);
  border: 1px solid var(--campus-line-dim);
  background: color-mix(in srgb, var(--campus-impulse, #d4c4a8) 12%, transparent);
}
.ch-sec__vs[data-mode="template"] .ch-sec__vs-note {
  background: color-mix(in srgb, var(--campus-ink) 5%, transparent);
}

/* AI */
.ch-sec__ai {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-sec__ai-layout {
  display: grid;
  gap: 18px;
}
.ch-sec__ai-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.ch-sec__ai-tab {
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.28);
  color: var(--campus-ink-dim);
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 200ms, color 200ms, border-color 200ms;
}
.ch-sec__ai-tab.is-active {
  background: var(--campus-ink);
  border-color: var(--campus-ink);
  color: #f4f6f8;
}
[data-theme="dark"] .ch-sec__ai-tab.is-active {
  background: var(--campus-impulse, #d4c4a8);
  border-color: var(--campus-impulse, #d4c4a8);
  color: #14181e;
}
.ch-sec__ai-panel {
  padding: 24px 26px;
  border-radius: var(--nx-radius-lg);
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.42);
}
[data-theme="dark"] .ch-sec__ai-panel { background: rgba(255,255,255,0.04); }
.ch-sec__ai-title {
  margin: 0 0 10px;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  color: var(--campus-ink);
}
.ch-sec__ai-body {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--campus-ink-dim);
  max-width: 62ch;
}
.ch-sec__ai-gain {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--campus-ink);
  padding: 12px 14px;
  border-radius: var(--nx-radius-md);
  background: color-mix(in srgb, var(--campus-impulse, #d4c4a8) 16%, transparent);
  border: 1px solid var(--campus-line-dim);
  display: inline-block;
}
.ch-sec__ai-gain strong {
  font-family: var(--nx-font-mono);
  font-variant-numeric: tabular-nums;
}

/* FAQ + foot */
.ch-sec__qs { margin-bottom: clamp(32px, 4vw, 44px); }
.ch-sec__q {
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-md);
  margin-bottom: 12px;
  background: rgba(255, 255, 255, 0.28);
  overflow: hidden;
}
[data-theme="dark"] .ch-sec__q { background: rgba(255,255,255,0.04); }
.ch-sec__q[open] {
  border-color: color-mix(in srgb, var(--campus-ink) 22%, transparent);
  background: rgba(255, 255, 255, 0.42);
}
.ch-sec__q-sum {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}
.ch-sec__q-sum::-webkit-details-marker { display: none; }
.ch-sec__q-num {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  font-weight: 600;
  color: var(--campus-mark);
}
.ch-sec__q-title {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  letter-spacing: -0.02em;
  color: var(--campus-ink);
}
.ch-sec__q-caret {
  font-size: 16px;
  color: var(--campus-mark);
  transition: transform 220ms var(--nx-ease-out);
}
.ch-sec__q[open] .ch-sec__q-caret { transform: rotate(180deg); }
.ch-sec__q-body {
  padding: 0 20px 20px;
  padding-left: calc(20px + 2ch + 14px);
  color: var(--campus-ink-dim);
  font-size: 15px;
  line-height: 1.65;
  max-width: 68ch;
}
.ch-sec__q-body p { margin: 0; }
.ch-sec__q-body strong { color: var(--campus-ink); }

.ch-sec__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding: 24px 26px;
  border-radius: var(--nx-radius-lg);
  border: 1px solid var(--campus-line-dim);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--campus-impulse, #d4c4a8) 18%, transparent), transparent 55%),
    color-mix(in srgb, var(--campus-ink) 4%, transparent);
}
.ch-sec__foot-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.ch-sec__foot-text strong {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--campus-ink);
}
.ch-sec__foot-text span {
  font-size: 13px;
  color: var(--campus-ink-dim);
}

body.has-nx-shell .ch-sec__hero:focus {
  outline: none;
}

@media (max-width: 900px) {
  .ch-sec__panel { width: 100%; }
  .ch-sec__facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ch-sec__plan-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ch-sec__plan-stage,
  .ch-sec__journey-layout,
  .ch-sec__vs-stage {
    grid-template-columns: 1fr;
  }
  .ch-sec__plan-copy {
    border-left: 0;
    border-top: 1px solid var(--campus-line-dim);
  }
  .ch-sec__mock {
    min-height: 240px;
    padding: 12px;
  }
  .ch-sec__q-body { padding-left: 20px; }
  .ch-sec__foot { align-items: flex-start; }}
@media (max-width: 560px) {
  .ch-sec__facts,
  .ch-sec__plan-tabs { grid-template-columns: 1fr; }}
@media (prefers-reduced-motion: reduce) {
  .ch-sec__facts li,
  .ch-sec__fact-media img,
  .ch-sec__plan-tab,
  .ch-sec__step,
  .ch-sec__q-caret { transition: none; }
  .ch-sec__facts li:hover { transform: none; }
  .ch-sec__plan-stage.is-swap,
  .ch-sec__journey-panel.is-swap,
  .ch-sec__ai-panel.is-swap { animation: none; }}

/* ==========================================
   Backup Vault — articles #chapter-5
   Backup + DR conversion floor
   ========================================== */

body.has-nx-shell .chapter.chapter--vault {
  padding-top: clamp(28px, 4vw, 48px);
  padding-bottom: clamp(56px, 8vw, 96px);
}
body.has-nx-shell .chapter.chapter--vault::before { display: none; }

.ch-vault {
  position: relative;
  z-index: 2;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--nx-gutter);
}

.ch-vault__hero {
  display: flex;
  align-items: flex-end;
  padding: clamp(16px, 3vw, 28px) 0 clamp(28px, 4vw, 40px);
}
.ch-vault__panel {
  width: min(100%, 38rem);
  padding: clamp(24px, 3vw, 32px);
  background: color-mix(in srgb, var(--campus-glass-strong) 88%, #fff);
  backdrop-filter: blur(22px) saturate(1.15);
  -webkit-backdrop-filter: blur(22px) saturate(1.15);
  border: 1px solid var(--nx-border-glass);
  border-radius: var(--nx-radius-xl);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.55) inset,
    0 18px 48px rgba(10, 16, 24, 0.12);
}
[data-theme="dark"] .ch-vault__panel {
  background: color-mix(in srgb, var(--campus-glass-strong) 92%, #000);
}
.ch-vault__title {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.75rem, 3.6vw, 2.55rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--campus-ink);
  margin: 0 0 12px;
}
.ch-vault__support {
  margin: 0 0 16px;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--campus-ink-dim);
  max-width: 42ch;
}
.ch-vault__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 0;
  margin-bottom: 18px;
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--campus-ink-dim);
  font-variant-numeric: tabular-nums;
}
.ch-vault__price {
  color: var(--campus-ink);
  font-weight: 600;
}
.ch-vault__meta-sep {
  display: inline-block;
  width: 1px;
  height: 10px;
  margin: 0 10px;
  background: var(--campus-line-dim);
}
.ch-vault__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.ch-vault__sheet {
  margin-top: 4px;
  padding: clamp(36px, 5vw, 56px) clamp(24px, 4vw, 48px) clamp(36px, 5vw, 48px);
  background: rgba(247, 248, 250, 0.72);
  backdrop-filter: blur(18px) saturate(1.1);
  -webkit-backdrop-filter: blur(18px) saturate(1.1);
  border: 1px solid rgba(20, 28, 40, 0.08);
  border-radius: calc(var(--nx-radius-xl) + 4px);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.65) inset,
    0 24px 64px rgba(10, 16, 24, 0.08);
}
[data-theme="dark"] .ch-vault__sheet {
  background: rgba(16, 22, 32, 0.68);
  border-color: rgba(255, 255, 255, 0.08);
}

.ch-vault__section-head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 28px;
}
.ch-vault__section-title {
  margin: 0;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  color: var(--campus-ink);
  letter-spacing: -0.03em;
}
.ch-vault__section-note {
  margin: 0;
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--campus-mark);
}

/* Signals */
.ch-vault__signals {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-vault__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.ch-vault__facts li {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.42);
  border: 1px solid rgba(20, 28, 40, 0.1);
  border-radius: var(--nx-radius-md);
  transition: transform 220ms var(--nx-ease-out), border-color 220ms, box-shadow 220ms;
}
.ch-vault__facts li:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--campus-ink) 28%, transparent);
  box-shadow: 0 16px 36px rgba(10, 16, 24, 0.1);
}
[data-theme="dark"] .ch-vault__facts li {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
}
.ch-vault__fact-media {
  margin: 0;
  aspect-ratio: 1;
  overflow: hidden;
}
.ch-vault__fact-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 480ms var(--nx-ease-out);
}
.ch-vault__facts li:hover .ch-vault__fact-media img { transform: scale(1.04); }
.ch-vault__fact-k {
  font-family: var(--nx-font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--campus-mark);
  padding: 14px 16px 0;
}
.ch-vault__fact-v {
  font-family: var(--nx-font-mono);
  font-weight: 500;
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  font-variant-numeric: tabular-nums;
  color: var(--campus-ink);
  padding: 6px 16px 16px;
}

/* Format picker */
.ch-vault__plan {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-vault__plan-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: stretch;
}
.ch-vault__plan-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.ch-vault__plan-tab {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  min-height: 108px;
  padding: 18px 16px;
  text-align: left;
  cursor: pointer;
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-md);
  background: rgba(255, 255, 255, 0.28);
  color: var(--campus-ink);
  transition: border-color 200ms, background 200ms, transform 200ms, box-shadow 200ms;
}
.ch-vault__plan-tab em {
  font-style: normal;
  font-family: var(--nx-font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-top: auto;
  padding-top: 8px;
}
.ch-vault__plan-num {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--campus-mark);
}
.ch-vault__plan-label {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.ch-vault__plan-tab:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--campus-ink) 28%, transparent);
}
.ch-vault__plan-tab.is-active {
  border-color: var(--campus-ink);
  background: color-mix(in srgb, var(--campus-ink) 6%, #fff);
  box-shadow: 0 12px 28px rgba(10, 16, 24, 0.08);
}
[data-theme="dark"] .ch-vault__plan-tab { background: rgba(255,255,255,0.04); }
[data-theme="dark"] .ch-vault__plan-tab.is-active { background: rgba(255,255,255,0.08); }

.ch-vault__plan-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.72fr);
  gap: 0;
  align-items: stretch;
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-lg);
  overflow: hidden;
  background: #f4f5f7;
}
[data-theme="dark"] .ch-vault__plan-stage {
  background: #121820;
}
.ch-vault__plan-stage.is-swap,
.ch-vault__journey-panel.is-swap,
.ch-vault__ai-panel.is-swap {
  animation: chVaultSwap 280ms var(--nx-ease-out);
}
@keyframes chVaultSwap {
  from { opacity: 0.35; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}
.ch-vault__mock {
  margin: 0;
  min-width: 0;
  min-height: 320px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #0e1218;
  isolation: isolate;
  padding: 14px;
}
.ch-vault__mock img,
.ch-vault__viz img,
.ch-vault__vs-viz img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 180ms var(--nx-ease-out);
}
.ch-vault__mock img {
  width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
}
.ch-vault__mock img.is-fading,
.ch-vault__viz img.is-fading,
.ch-vault__vs-viz img.is-fading { opacity: 0.35; }

.ch-vault__plan-copy {
  min-width: 0;
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0;
  background: #f7f8fa;
  border-left: 1px solid var(--campus-line-dim);
  color: var(--campus-ink);
  z-index: 1;
}
[data-theme="dark"] .ch-vault__plan-copy {
  background: #161c26;
  border-left-color: rgba(255, 255, 255, 0.1);
}
.ch-vault__plan-kicker {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-bottom: 8px;
}
.ch-vault__plan-title {
  margin: 0 0 10px;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.3rem, 2.2vw, 1.6rem);
  letter-spacing: -0.03em;
  color: var(--campus-ink);
}
.ch-vault__plan-body {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--campus-ink-dim);
  max-width: 52ch;
}
.ch-vault__plan-points {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.ch-vault__plan-points li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--campus-ink);
}
.ch-vault__plan-points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 7px;
  height: 1px;
  background: var(--campus-ink);
}
.ch-vault__estimate {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 6px;
  padding: 16px;
  border-radius: var(--nx-radius-md);
  border: 1px solid rgba(20, 28, 40, 0.12);
  background: #fff;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7) inset;
}
[data-theme="dark"] .ch-vault__estimate {
  background: #0f141c;
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: none;
}
.ch-vault__estimate > div {
  min-width: 0;
}
.ch-vault__estimate-k {
  display: block;
  font-family: var(--nx-font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-bottom: 6px;
}
.ch-vault__estimate-v,
.ch-vault__estimate-t {
  display: block;
  font-family: var(--nx-font-mono);
  font-weight: 600;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--campus-ink);
  word-break: break-word;
}
.ch-vault__estimate .btn-nexus {
  grid-column: 1 / -1;
  justify-content: center;
  margin-top: 4px;
}

/* Journey */
.ch-vault__journey {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-vault__journey-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 22px;
}
.ch-vault__process {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.ch-vault__process > li { margin: 0; }
.ch-vault__step {
  width: 100%;
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 20px 18px;
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-md);
  background: rgba(255, 255, 255, 0.28);
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 200ms, background 200ms, transform 200ms;
}
.ch-vault__step:hover { transform: translateX(3px); border-color: color-mix(in srgb, var(--campus-ink) 28%, transparent); }
.ch-vault__step.is-active {
  border-color: var(--campus-ink);
  background: color-mix(in srgb, var(--campus-ink) 6%, #fff);
}
[data-theme="dark"] .ch-vault__step { background: rgba(255,255,255,0.04); }
[data-theme="dark"] .ch-vault__step.is-active { background: rgba(255,255,255,0.08); }
.ch-vault__step-num {
  font-family: var(--nx-font-mono);
  font-size: 12px;
  font-weight: 600;
  color: color-mix(in srgb, var(--campus-ink) 45%, var(--campus-impulse, #d4c4a8));
}
.ch-vault__step-body { display: flex; flex-direction: column; gap: 4px; }
.ch-vault__step-title {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--campus-ink);
}
.ch-vault__step-sub { font-size: 13px; color: var(--campus-ink-dim); }
.ch-vault__journey-panel {
  padding: 0;
  overflow: hidden;
  border-radius: var(--nx-radius-lg);
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.42);
  display: flex;
  flex-direction: column;
}
[data-theme="dark"] .ch-vault__journey-panel { background: rgba(255,255,255,0.04); }
.ch-vault__viz {
  margin: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: color-mix(in srgb, var(--campus-ink) 8%, transparent);
}
.ch-vault__journey-copy { padding: 22px; }
.ch-vault__journey-time {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--campus-mark);
  margin-bottom: 10px;
  font-variant-numeric: tabular-nums;
}
.ch-vault__journey-title {
  margin: 0 0 12px;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  letter-spacing: -0.03em;
  color: var(--campus-ink);
}
.ch-vault__journey-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--campus-ink-dim);
  max-width: 42ch;
}

/* VS */
.ch-vault__vs {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-vault__vs-toggle {
  display: inline-flex;
  padding: 4px;
  margin-bottom: 24px;
  border-radius: 999px;
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.35);
  gap: 4px;
}
[data-theme="dark"] .ch-vault__vs-toggle { background: rgba(255,255,255,0.05); }
.ch-vault__vs-btn {
  border: 0;
  background: transparent;
  color: var(--campus-ink-dim);
  font-family: var(--nx-font-body);
  font-size: 13px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: 999px;
  cursor: pointer;
}
.ch-vault__vs-btn.is-active {
  background: var(--campus-ink);
  color: #f4f6f8;
}
[data-theme="dark"] .ch-vault__vs-btn.is-active {
  background: var(--campus-impulse, #d4c4a8);
  color: #14181e;
}
.ch-vault__vs-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 22px;
  align-items: stretch;
}
.ch-vault__vs-viz {
  margin: 0;
  min-height: 240px;
  border-radius: var(--nx-radius-lg);
  overflow: hidden;
  border: 1px solid var(--campus-line-dim);
}
.ch-vault__vs-sum {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.25rem, 2.2vw, 1.55rem);
  letter-spacing: -0.03em;
  color: var(--campus-ink);
  margin-bottom: 16px;
  line-height: 1.25;
}
.ch-vault__vs-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.ch-vault__vs-list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  color: var(--campus-ink);
  line-height: 1.45;
}
.ch-vault__vs-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 7px;
  height: 1px;
  background: var(--campus-ink);
}
.ch-vault__vs-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--campus-ink-dim);
  padding: 14px 16px;
  border-radius: var(--nx-radius-md);
  border: 1px solid var(--campus-line-dim);
  background: color-mix(in srgb, var(--campus-impulse, #d4c4a8) 12%, transparent);
}
.ch-vault__vs[data-mode="template"] .ch-vault__vs-note {
  background: color-mix(in srgb, var(--campus-ink) 5%, transparent);
}

/* AI */
.ch-vault__ai {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(36px, 5vw, 52px);
  border-bottom: 1px solid var(--campus-line-dim);
}
.ch-vault__ai-layout {
  display: grid;
  gap: 18px;
}
.ch-vault__ai-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.ch-vault__ai-tab {
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.28);
  color: var(--campus-ink-dim);
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 200ms, color 200ms, border-color 200ms;
}
.ch-vault__ai-tab.is-active {
  background: var(--campus-ink);
  border-color: var(--campus-ink);
  color: #f4f6f8;
}
[data-theme="dark"] .ch-vault__ai-tab.is-active {
  background: var(--campus-impulse, #d4c4a8);
  border-color: var(--campus-impulse, #d4c4a8);
  color: #14181e;
}
.ch-vault__ai-panel {
  padding: 24px 26px;
  border-radius: var(--nx-radius-lg);
  border: 1px solid var(--campus-line-dim);
  background: rgba(255, 255, 255, 0.42);
}
[data-theme="dark"] .ch-vault__ai-panel { background: rgba(255,255,255,0.04); }
.ch-vault__ai-title {
  margin: 0 0 10px;
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  color: var(--campus-ink);
}
.ch-vault__ai-body {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--campus-ink-dim);
  max-width: 62ch;
}
.ch-vault__ai-gain {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--campus-ink);
  padding: 12px 14px;
  border-radius: var(--nx-radius-md);
  background: color-mix(in srgb, var(--campus-impulse, #d4c4a8) 16%, transparent);
  border: 1px solid var(--campus-line-dim);
  display: inline-block;
}
.ch-vault__ai-gain strong {
  font-family: var(--nx-font-mono);
  font-variant-numeric: tabular-nums;
}

/* FAQ + foot */
.ch-vault__qs { margin-bottom: clamp(32px, 4vw, 44px); }
.ch-vault__q {
  border: 1px solid var(--campus-line-dim);
  border-radius: var(--nx-radius-md);
  margin-bottom: 12px;
  background: rgba(255, 255, 255, 0.28);
  overflow: hidden;
}
[data-theme="dark"] .ch-vault__q { background: rgba(255,255,255,0.04); }
.ch-vault__q[open] {
  border-color: color-mix(in srgb, var(--campus-ink) 22%, transparent);
  background: rgba(255, 255, 255, 0.42);
}
.ch-vault__q-sum {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}
.ch-vault__q-sum::-webkit-details-marker { display: none; }
.ch-vault__q-num {
  font-family: var(--nx-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  font-weight: 600;
  color: var(--campus-mark);
}
.ch-vault__q-title {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  letter-spacing: -0.02em;
  color: var(--campus-ink);
}
.ch-vault__q-caret {
  font-size: 16px;
  color: var(--campus-mark);
  transition: transform 220ms var(--nx-ease-out);
}
.ch-vault__q[open] .ch-vault__q-caret { transform: rotate(180deg); }
.ch-vault__q-body {
  padding: 0 20px 20px;
  padding-left: calc(20px + 2ch + 14px);
  color: var(--campus-ink-dim);
  font-size: 15px;
  line-height: 1.65;
  max-width: 68ch;
}
.ch-vault__q-body p { margin: 0; }
.ch-vault__q-body strong { color: var(--campus-ink); }

.ch-vault__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding: 24px 26px;
  border-radius: var(--nx-radius-lg);
  border: 1px solid var(--campus-line-dim);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--campus-impulse, #d4c4a8) 18%, transparent), transparent 55%),
    color-mix(in srgb, var(--campus-ink) 4%, transparent);
}
.ch-vault__foot-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.ch-vault__foot-text strong {
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--campus-ink);
}
.ch-vault__foot-text span {
  font-size: 13px;
  color: var(--campus-ink-dim);
}

body.has-nx-shell .ch-vault__hero:focus {
  outline: none;
}

@media (max-width: 900px) {
  .ch-vault__panel { width: 100%; }
  .ch-vault__facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ch-vault__plan-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ch-vault__plan-stage,
  .ch-vault__journey-layout,
  .ch-vault__vs-stage {
    grid-template-columns: 1fr;
  }
  .ch-vault__plan-copy {
    border-left: 0;
    border-top: 1px solid var(--campus-line-dim);
  }
  .ch-vault__mock {
    min-height: 240px;
    padding: 12px;
  }
  .ch-vault__q-body { padding-left: 20px; }
  .ch-vault__foot { align-items: flex-start; }}
@media (max-width: 560px) {
  .ch-vault__facts,
  .ch-vault__plan-tabs { grid-template-columns: 1fr; }}
@media (prefers-reduced-motion: reduce) {
  .ch-vault__facts li,
  .ch-vault__fact-media img,
  .ch-vault__plan-tab,
  .ch-vault__step,
  .ch-vault__q-caret { transition: none; }
  .ch-vault__facts li:hover { transform: none; }
  .ch-vault__plan-stage.is-swap,
  .ch-vault__journey-panel.is-swap,
  .ch-vault__ai-panel.is-swap { animation: none; }}