html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { background: var(--bg); color: var(--text); font-family: var(--sans); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img { max-width: 100%; }
a { color: var(--accent-ink); }
a:hover { color: var(--accent-ink-2); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 6px; }
.nu-main { display: block; overflow-x: clip; }
.nu-vh { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }


.nu-js .nu-rise { opacity: 0; transform: translate3d(0, 18px, 0); transition: opacity .7s cubic-bezier(.2, .7, .2, 1), transform .7s cubic-bezier(.2, .7, .2, 1); transition-delay: calc(var(--d, 0) * 90ms); }
.nu-js .nu-rise.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .nu-js .nu-rise { opacity: 1; transform: none; transition: none; } }


.nu-js .nu-card.nu-rise.is-in { transition: opacity .7s cubic-bezier(.2, .7, .2, 1), transform .25s cubic-bezier(.2, .7, .2, 1), border-color .2s, box-shadow .25s; transition-delay: 0s; }
.nu-js a.nu-card.nu-rise.is-in:hover, .nu-js .nu-card--lift.nu-rise.is-in:hover { transform: translateY(-3px); }


.nu-sec { position: relative; padding-block: clamp(44px, 6vw, 92px); }
.nu-sec--tight { padding-block: clamp(28px, 4vw, 56px); }
.nu-sec--flush-top { padding-top: 0; }
.nu-wrap { width: 100%; max-width: 1280px; margin-inline: auto; padding-inline: var(--gutter); }
.nu-wrap--narrow { max-width: 920px; }
.nu-wrap--read { max-width: 780px; }


.nu-eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: 15px; font-weight: 600; letter-spacing: .005em; color: var(--accent-ink); }
.nu-eyebrow::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: currentColor; opacity: .9; flex: none; }


.nu-head { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 14px clamp(24px, 5vw, 80px); align-items: end; }
.nu-head--solo { grid-template-columns: minmax(0, 1fr); }
.nu-head--center { grid-template-columns: minmax(0, 1fr); text-align: center; justify-items: center; }
.nu-title { margin-top: 14px; font-family: var(--serif); font-weight: 400; letter-spacing: -0.024em; font-size: clamp(34px, 4.4vw, 62px); line-height: 1.03; text-wrap: balance; }
.nu-title em { font-style: italic; color: var(--accent-ink); }
.nu-lede { font-size: clamp(16px, 1.3vw, 19px); line-height: 1.6; color: var(--text-2); max-width: 34em; text-wrap: pretty; }
.nu-lede strong { color: var(--text); font-weight: 600; }
.nu-lede a { color: var(--text); text-decoration-color: var(--text-3); }
.nu-fine { font-size: 13.5px; line-height: 1.55; color: var(--text-3); }
.nu-fine a { color: var(--text-2); }
@media (max-width: 860px) { .nu-head { grid-template-columns: minmax(0, 1fr); } }


.nu-hero { position: relative; isolation: isolate; overflow: hidden; background: var(--hero-bg); padding: calc(var(--nav-h) + clamp(22px, 4vw, 56px)) 0 clamp(32px, 4.6vw, 64px); }
.nu-hero__grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: clamp(28px, 4vw, 64px); align-items: center; }
.nu-hero--split .nu-hero__grid { grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); }
@media (max-width: 960px) { .nu-hero--split .nu-hero__grid { grid-template-columns: minmax(0, 1fr); } }
.nu-crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: clamp(18px, 2.6vw, 30px); font-size: 14px; color: var(--text-3); }
.nu-crumbs a { color: var(--text-2); text-decoration: none; }
.nu-crumbs a:hover { color: var(--text); text-decoration: underline; }
.nu-crumbs [aria-hidden] { opacity: .6; }
.nu-h1 { margin-top: 16px; font-family: var(--serif); font-weight: 400; letter-spacing: -0.026em; font-size: clamp(42px, 5.4vw, 80px); line-height: .99; text-wrap: balance; }
.nu-h1 em, .nu-em { position: relative; display: inline-block; font-style: italic; color: var(--accent-ink); padding-right: .04em; }
.nu-swoosh { position: absolute; left: -2%; bottom: -0.16em; width: 104%; height: 0.3em; overflow: visible; }
.nu-swoosh path { fill: none; stroke: var(--coral); stroke-width: 3.2px; stroke-linecap: round; stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.nu-hero .nu-lede { margin-top: 22px; font-size: clamp(18px, 1.5vw, 21px); line-height: 1.55; max-width: 30em; }
.nu-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 30px; }
.nu-note { margin-top: 14px; font-size: 14.5px; line-height: 1.7; color: var(--text-3); }
.nu-note a { color: var(--text); text-decoration-color: var(--text-3); }
.nu-hero__art { position: relative; min-width: 0; }


.nu-stage { position: relative; isolation: isolate; overflow: hidden; margin-top: clamp(22px, 3vw, 40px); padding: clamp(22px, 3.4vw, 48px); border-radius: 30px; background: var(--tint-bg); border: 1px solid var(--tint-line); }
.nu-stage::before { content: ''; position: absolute; inset: -4%; z-index: -1; pointer-events: none;
  background: radial-gradient(60% 70% at 88% 8%, rgba(255, 138, 96, 0.22), transparent 70%), radial-gradient(55% 65% at 4% 100%, rgba(127, 227, 196, 0.18), transparent 70%), radial-gradient(40% 50% at 55% 55%, rgba(176, 150, 255, 0.08), transparent 70%);
  animation: nuDrift 18s ease-in-out infinite alternate; }
@keyframes nuDrift { to { transform: translate3d(-2%, 3%, 0) scale(1.06); } }
.nu-stage--plain { background: var(--surface); border-color: var(--line); }
.nu-stage--plain::before { display: none; }
.nu-stage--flush { padding: 0; }
@media (prefers-reduced-motion: reduce) { .nu-stage::before { animation: none; } }


.nu-card { position: relative; padding: clamp(18px, 2vw, 26px); border-radius: 20px; background: var(--surface); border: 1px solid var(--line); box-shadow: 0 1px 2px rgba(60, 50, 40, 0.05), 0 24px 44px -28px rgba(60, 40, 28, 0.38); min-width: 0; }
.nu-card--flat { box-shadow: none; }
.nu-card--lift { transition: transform .25s cubic-bezier(.2, .7, .2, 1), border-color .2s, box-shadow .25s; }
a.nu-card, .nu-card--lift { text-decoration: none; color: var(--text); display: block; }
a.nu-card:hover, .nu-card--lift:hover { color: var(--text); transform: translateY(-3px); border-color: var(--coral-2); box-shadow: 0 1px 2px rgba(60, 50, 40, 0.05), 0 30px 54px -28px rgba(228, 84, 60, 0.42); }
.nu-card--tint { background: var(--tint-bg); border-color: var(--tint-line); }
.nu-card--mint { background: var(--mint-soft); border-color: var(--mint-line); }
.nu-card--amber { background: var(--amber-soft); border-color: rgba(138, 90, 18, 0.22); }
.nu-card--float { animation: nuFloat 7s ease-in-out infinite alternate; }
.nu-card--float.nu-d2 { animation-duration: 8.5s; animation-delay: -3s; }
@keyframes nuFloat { to { transform: translate3d(0, -7px, 0); } }
@media (prefers-reduced-motion: reduce) { .nu-card--float { animation: none; } }
.nu-card h3 { font-family: var(--serif); font-weight: 400; font-size: clamp(21px, 1.9vw, 26px); line-height: 1.12; letter-spacing: -0.012em; }
.nu-card p { margin-top: 8px; font-size: 15.5px; line-height: 1.58; color: var(--text-2); }
.nu-card p + p { margin-top: 10px; }
.nu-card__icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 14px; background: var(--peach); color: var(--peach-ink); margin-bottom: 14px; flex: none; }
.nu-card__icon svg { width: 22px; height: 22px; }
.nu-card__icon--mint { background: var(--mint-soft); color: var(--mint-ink); }
.nu-card__icon--amber { background: var(--amber-soft); color: var(--amber-ink); }
.nu-rowcard { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 16px; align-items: center; padding: 18px 20px; border-radius: 20px; background: var(--surface); border: 1px solid var(--line); box-shadow: 0 1px 2px rgba(60, 50, 40, 0.05), 0 24px 44px -26px rgba(60, 40, 28, 0.4); }
.nu-rowcard .nu-card__icon { margin: 0; }


.nu-grid { display: grid; gap: clamp(14px, 1.8vw, 24px); margin-top: clamp(20px, 2.8vw, 36px); }
.nu-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.nu-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.nu-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.nu-grid--auto { grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr)); }
.nu-grid--stretch > * { height: 100%; }
@media (max-width: 1000px) { .nu-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .nu-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 680px) { .nu-grid--2, .nu-grid--3, .nu-grid--4 { grid-template-columns: minmax(0, 1fr); } }
.nu-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 80px); align-items: center; }
.nu-split--top { align-items: start; }
@media (max-width: 960px) { .nu-split { grid-template-columns: minmax(0, 1fr); } }


.nu-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.nu-chip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 11px; border-radius: 999px; font-size: 13px; font-weight: 600; line-height: 1.25; background: var(--fill); color: var(--text-2); border: 1px solid var(--hair); white-space: nowrap; }
.nu-chip--coral { background: var(--peach); color: var(--peach-ink); border-color: var(--tint-line); }
.nu-chip--mint { background: var(--mint-soft); color: var(--mint-ink); border-color: var(--mint-line); }
.nu-chip--amber { background: var(--amber-soft); color: var(--amber-ink); border-color: rgba(138, 90, 18, 0.22); }
.nu-chip--ink { background: var(--chip-bg); color: var(--chip-ink); border-color: transparent; }
.nu-chip i { width: 7px; height: 7px; border-radius: 50%; background: currentColor; flex: none; }
.nu-chip svg { width: 14px; height: 14px; flex: none; }


.nu-tile { position: relative; display: flex; align-items: center; justify-content: center; gap: 10px; min-width: 0; min-height: 84px; padding: 0 16px; border-radius: 20px; background: var(--surface); border: 1px solid var(--line); box-shadow: 0 12px 26px -20px rgba(20, 16, 40, 0.45); color: var(--text); text-decoration: none; transition: border-color .2s, transform .2s; }
a.nu-tile:hover { color: var(--text); border-color: var(--coral-2); transform: translateY(-2px); }
.nu-tile--lg { min-height: 112px; }
.nu-mark { display: block; width: var(--w, 100%); height: var(--h, 34px); background: currentColor; -webkit-mask: var(--m) center / contain no-repeat; mask: var(--m) center / contain no-repeat; opacity: .92; flex: none; }
.nu-mono { display: grid; place-items: center; min-width: 32px; height: 32px; padding: 0 4px; border-radius: 9px; border: 1.5px solid var(--line-2); background: var(--surface-2); font: 700 12px/1 var(--sans); letter-spacing: -0.02em; color: var(--text); flex: none; }
.nu-tile__name { font: 600 15px/1.2 var(--sans); }


.nu-stats { display: grid; grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr)); background: var(--surface); border: 1px solid var(--line); border-radius: 20px; box-shadow: 0 12px 32px -18px rgba(20, 16, 40, 0.28); overflow: hidden; }
.nu-stat { position: relative; display: flex; flex-direction: column; gap: 6px; padding: 20px 18px 18px; min-width: 0; font-size: 14px; line-height: 1.38; color: var(--text-2); }
.nu-stat + .nu-stat::before { content: ''; position: absolute; left: 0; top: 18px; bottom: 18px; width: 1px; background: var(--line); }
.nu-stat::after { content: ''; position: absolute; left: 18px; top: 0; width: 22px; height: 2px; border-radius: 2px; background: var(--coral); }
.nu-stat strong { font-family: var(--serif); font-weight: 500; font-size: clamp(26px, 2.6vw, 38px); line-height: 1; letter-spacing: -0.02em; color: var(--text); }
.nu-stat a { color: var(--text); }
@media (max-width: 680px) { .nu-stats { grid-template-columns: minmax(0, 1fr); } .nu-stat + .nu-stat::before { left: 18px; right: 18px; top: 0; bottom: auto; width: auto; height: 1px; } }


.nu-steps { list-style: none; counter-reset: nu; display: grid; gap: clamp(14px, 2vw, 22px); }
.nu-steps > li { counter-increment: nu; position: relative; display: grid; grid-template-columns: 52px minmax(0, 1fr); gap: 18px; align-items: start; }
.nu-steps > li::before { content: counter(nu); display: grid; place-items: center; width: 52px; height: 52px; border-radius: 16px; background: var(--surface); border: 1.5px solid var(--coral-2); box-shadow: 0 0 0 6px rgba(255, 138, 96, 0.10); font-family: var(--serif); font-size: 24px; color: var(--accent-ink); position: relative; z-index: 1; }
.nu-steps > li::after { content: ''; position: absolute; left: 25px; top: 56px; bottom: calc(clamp(14px, 2vw, 22px) * -1 - 4px); width: 2px; background: linear-gradient(var(--coral-2), var(--line-2)); opacity: .7; }
.nu-steps > li:last-child::after { display: none; }
.nu-steps h3 { font-family: var(--serif); font-weight: 400; font-size: clamp(21px, 2vw, 27px); line-height: 1.12; letter-spacing: -0.012em; padding-top: 4px; }
.nu-steps p { margin-top: 6px; font-size: 16px; line-height: 1.6; color: var(--text-2); max-width: 44em; }


.nu-notice { display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 14px; padding: 16px 18px; border-radius: 16px; background: var(--surface); border: 1px solid var(--line); font-size: 15px; line-height: 1.6; color: var(--text-2); }
.nu-notice > svg { width: 24px; height: 24px; color: var(--accent-ink); margin-top: 1px; }
.nu-notice strong { color: var(--text); }
.nu-notice--mint { background: var(--mint-soft); border-color: var(--mint-line); }
.nu-notice--mint > svg { color: var(--mint-ink); }
.nu-notice--amber { background: var(--amber-soft); border-color: rgba(138, 90, 18, 0.22); }
.nu-notice--amber > svg { color: var(--amber-ink); }


.nu-tablewrap { overflow-x: auto; border-radius: 22px; background: var(--surface); border: 1px solid var(--line); box-shadow: 0 1px 2px rgba(60, 50, 40, 0.05), 0 24px 44px -28px rgba(60, 40, 28, 0.32); }
.nu-table { width: 100%; border-collapse: collapse; min-width: 640px; font-size: 15px; line-height: 1.45; }
.nu-table th { text-align: left; padding: 14px 18px; font-size: 12px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; color: var(--accent-ink); border-bottom: 1px solid var(--line); background: var(--surface-2); white-space: nowrap; }
.nu-table td { padding: 15px 18px; vertical-align: top; border-bottom: 1px solid var(--line); color: var(--text-2); }
.nu-table tr:last-child td { border-bottom: 0; }
.nu-table tbody tr { transition: background .15s; }
.nu-table tbody tr:hover { background: var(--surface-2); }
.nu-table td:first-child { color: var(--text); font-weight: 600; }
.nu-table a { color: var(--text); text-decoration-color: var(--coral-2); text-underline-offset: 3px; }


.nu-acc { display: grid; gap: 12px; }
.nu-acc__item { border-radius: 18px; background: var(--surface); border: 1px solid var(--line); box-shadow: 0 1px 2px rgba(60, 50, 40, 0.04); overflow: hidden; transition: border-color .2s, box-shadow .2s; }
.nu-acc__item:hover { border-color: var(--line-2); }
.nu-acc__item.is-open { border-color: var(--coral-2); box-shadow: 0 24px 44px -30px rgba(228, 84, 60, 0.4); }
.nu-acc__q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 18px 22px; background: none; border: 0; text-align: left; color: var(--text); font: 600 17px/1.35 var(--sans); cursor: pointer; }
.nu-acc__q svg { width: 20px; height: 20px; flex: none; color: var(--accent-ink); transition: transform .25s; }
.nu-acc__item.is-open .nu-acc__q svg { transform: rotate(45deg); }
.nu-acc__a { padding: 0 22px 20px; font-size: 16px; line-height: 1.65; color: var(--text-2); max-width: 52em; }
.nu-acc__a[hidden] { display: none; }
.nu-acc__a p + p, .nu-acc__a ul, .nu-acc__a ol { margin-top: 10px; }
.nu-acc__a ul, .nu-acc__a ol { padding-left: 1.2em; }
.nu-acc__a a { color: var(--text); text-decoration-color: var(--coral-2); }


.nu-prose { font-size: 17.5px; line-height: 1.72; color: var(--text-2); }
.nu-prose > * + * { margin-top: 1.1em; }
.nu-prose h2 { margin-top: 2.1em; font-family: var(--serif); font-weight: 400; font-size: clamp(28px, 3vw, 38px); line-height: 1.1; letter-spacing: -0.02em; color: var(--text); scroll-margin-top: calc(var(--nav-h) + 20px); }
.nu-prose h3 { margin-top: 1.7em; font-family: var(--serif); font-weight: 500; font-size: clamp(22px, 2.2vw, 27px); line-height: 1.18; color: var(--text); scroll-margin-top: calc(var(--nav-h) + 20px); }
.nu-prose p strong, .nu-prose li strong { color: var(--text); }
.nu-prose a { color: var(--text); text-decoration-color: var(--coral-2); text-underline-offset: 3px; }
.nu-prose ul, .nu-prose ol { padding-left: 1.3em; }
.nu-prose li + li { margin-top: .45em; }
.nu-prose li::marker { color: var(--coral-2); }
.nu-prose blockquote { padding: 4px 0 4px 20px; border-left: 3px solid var(--coral-2); font-family: var(--serif); font-size: 1.12em; line-height: 1.5; color: var(--text); }
.nu-prose code { font: 600 .88em/1 ui-monospace, SFMono-Regular, Menlo, monospace; padding: .15em .4em; border-radius: 6px; background: var(--fill); color: var(--text); }
.nu-prose hr { border: 0; height: 1px; background: var(--line); margin-block: 2em; }
.nu-prose table { width: 100%; border-collapse: collapse; font-size: .92em; }
.nu-prose th, .nu-prose td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.nu-prose th { font-size: .78em; letter-spacing: .08em; text-transform: uppercase; color: var(--accent-ink); }
.nu-layout { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: clamp(32px, 5vw, 80px); align-items: start; }
.nu-layout--toc-left { grid-template-columns: 240px minmax(0, 1fr); }
.nu-toc { position: sticky; top: calc(var(--nav-h) + 24px); padding: 18px 18px 16px; border-radius: 18px; background: var(--surface); border: 1px solid var(--line); font-size: 14px; }
.nu-toc h2 { font: 700 12px/1 var(--sans); letter-spacing: .09em; text-transform: uppercase; color: var(--accent-ink); margin-bottom: 12px; }
.nu-toc ol, .nu-toc ul { list-style: none; display: grid; gap: 2px; }
.nu-toc a { display: block; padding: 6px 10px; margin-inline: -10px; border-radius: 9px; color: var(--text-2); text-decoration: none; line-height: 1.35; }
.nu-toc a:hover, .nu-toc a.is-on { color: var(--text); background: var(--peach); }
@media (max-width: 960px) { .nu-layout, .nu-layout--toc-left { grid-template-columns: minmax(0, 1fr); } .nu-toc { position: static; } }


.nu-auth { width: 100%; max-width: 480px; margin-inline: auto; padding: clamp(24px, 3.4vw, 40px); border-radius: 28px; background: var(--surface); border: 1px solid var(--line); box-shadow: 0 1px 2px rgba(60, 50, 40, 0.05), 0 40px 80px -40px rgba(60, 40, 28, 0.45); }
.nu-field { display: grid; gap: 7px; margin-top: 18px; }
.nu-field label, .nu-label { font-size: 14px; font-weight: 600; color: var(--text); }
.nu-field input, .nu-field select, .nu-field textarea { width: 100%; min-height: 52px; padding: 0 16px; border-radius: 14px; border: 1.5px solid var(--line-2); background: var(--surface-2); color: var(--text); font: 500 16px/1.2 var(--sans); transition: border-color .15s, box-shadow .15s; }
.nu-field textarea { min-height: 140px; padding: 14px 16px; line-height: 1.5; resize: vertical; }
.nu-field input:focus, .nu-field select:focus, .nu-field textarea:focus { outline: 0; border-color: var(--coral); box-shadow: 0 0 0 4px rgba(255, 138, 96, 0.18); }
.nu-field small { font-size: 13px; color: var(--text-3); }
.nu-check { display: flex; gap: 12px; align-items: flex-start; margin-top: 16px; font-size: 14.5px; line-height: 1.5; color: var(--text-2); }
.nu-check input { width: 20px; height: 20px; margin-top: 2px; accent-color: var(--coral); flex: none; }
.nu-btn-full { width: 100%; margin-top: 22px; }
.nu-or { display: flex; align-items: center; gap: 14px; margin-top: 22px; font-size: 13px; color: var(--text-3); }
.nu-or::before, .nu-or::after { content: ''; height: 1px; flex: 1; background: var(--line); }


.nu-band { position: relative; overflow: hidden; isolation: isolate; text-align: center; background: var(--final-bg); padding-block: clamp(64px, 9vw, 120px); border-top: 1px solid var(--line); }
.nu-band h2 { font-family: var(--serif); font-weight: 400; font-size: clamp(40px, 5.6vw, 80px); line-height: .99; letter-spacing: -0.028em; text-wrap: balance; }
.nu-band h2 em { font-style: italic; color: var(--accent-ink); }
.nu-band__sub { margin: 20px auto 0; max-width: 34em; font-size: clamp(17px, 1.3vw, 19px); line-height: 1.6; color: var(--text-2); }
.nu-band .nu-actions { justify-content: center; margin-top: 32px; }
.nu-band .nu-note { margin-top: 16px; }


[data-nu-alive] { --nx: 0; --ny: 0; }
.nu-lean { transform: perspective(1500px) rotateY(calc(var(--nx, 0) * 3.5deg)) rotateX(calc(var(--ny, 0) * -2.5deg)); transition: transform .35s cubic-bezier(.2, .7, .2, 1); will-change: transform; }
.nu-depth-1 { transform: translate3d(calc(var(--nx, 0) * -12px), calc(var(--ny, 0) * -9px), 0); transition: transform .35s cubic-bezier(.2, .7, .2, 1); }
.nu-depth-2 { transform: translate3d(calc(var(--nx, 0) * -20px), calc(var(--ny, 0) * -14px), 0); transition: transform .35s cubic-bezier(.2, .7, .2, 1); }
.nu-stack::before, .nu-stack::after { content: ''; position: absolute; inset: 0; z-index: -1; border-radius: 20px; background: var(--surface); border: 1px solid var(--line); }
.nu-stack::before { transform: translate3d(10px, 12px, 0) rotate(1deg); opacity: .75; }
.nu-stack::after { transform: translate3d(20px, 24px, 0) rotate(2deg); opacity: .45; }
@media (hover: none), (prefers-reduced-motion: reduce) { .nu-lean, .nu-depth-1, .nu-depth-2 { transform: none !important; transition: none; } }
@media (max-width: 960px) { .nu-lean, .nu-depth-1, .nu-depth-2 { transform: none !important; } }


.nu-mt { margin-top: clamp(20px, 2.8vw, 36px); }
.nu-center { text-align: center; }
.nu-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.nu-link-arrow { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; color: var(--text); text-decoration: none; }
.nu-link-arrow svg { width: 18px; height: 18px; transition: transform .2s; }
.nu-link-arrow:hover { color: var(--text); }
.nu-link-arrow:hover svg { transform: translateX(4px); }
.mock-toast { position: fixed; left: 50%; bottom: 22px; z-index: 300; transform: translate(-50%, 12px); opacity: 0; padding: 10px 16px; border-radius: 12px; background: var(--chip-bg); color: var(--chip-ink); font: 600 14px/1.2 var(--sans); box-shadow: 0 16px 40px rgba(0, 0, 0, .28); pointer-events: none; transition: opacity .2s, transform .2s; }
.mock-toast.is-on { opacity: 1; transform: translate(-50%, 0); }
.nu-mockbar { position: fixed; left: 12px; bottom: 12px; z-index: 80; padding: 6px 10px; border-radius: 999px; background: var(--chip-bg); color: var(--chip-ink); font: 600 12px/1 var(--sans); opacity: .86; pointer-events: none; }
@media (max-width: 760px) { .nu-mockbar { display: none; } }