:root {
    --nb-ink: #271b16;
    --nb-paper: #fbf8f2;
    --nb-orange: #b8662f;
    --nb-orange-dark: #7b3f21;
    --nb-sand: #eadbc6;
    --nb-cream: #fff8ed;
    --nb-rule: rgb(39 27 22 / 0.2);
}

.home-template {
    background: var(--nb-paper);
}

.home-template .gh-navigation {
    background: var(--nb-paper);
    border-bottom: 1px solid var(--nb-rule);
}

.gh-navigation-logo {
    font-weight: 800;
    letter-spacing: -0.055em;
}

.nb-dot {
    color: var(--nb-orange);
    font-size: 0.45em;
    margin-left: 0.15em;
    vertical-align: 0.25em;
}

.nb-home {
    color: var(--nb-ink);
}

.nb-intro {
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--nb-rule);
}

.nb-intro-inner {
    position: relative;
    min-height: min(820px, calc(100vh - 80px));
    padding-top: clamp(5rem, 7vw, 9rem);
    padding-bottom: clamp(6rem, 9vw, 12rem);
}

.nb-intro-meta {
    display: flex;
    align-items: baseline;
    gap: 2.2rem;
    max-width: 900px;
}

.nb-name {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.nb-platform {
    margin: 0;
    font-size: clamp(1.35rem, 1.5vw, 1.75rem);
    line-height: 1.5;
}

.nb-pulse {
    display: inline-block;
    padding: 0.18em 0.55em;
    color: var(--nb-cream);
    background: var(--nb-orange);
    border-radius: 999px;
    font-weight: 700;
    animation: nb-pulse 2.8s ease-out infinite;
}

@keyframes nb-pulse {
    0%, 35% { box-shadow: 0 0 0 0 rgb(184 102 47 / 0.38); }
    75%, 100% { box-shadow: 0 0 0 12px rgb(184 102 47 / 0); }
}

.nb-questions {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: max-content max-content;
    align-items: baseline;
    row-gap: 0.22em;
    width: max-content;
    max-width: 100%;
    margin-top: clamp(7rem, 10vw, 13rem);
}

.nb-question {
    display: contents;
    margin: 0;
    font-weight: 760;
    line-height: 0.94;
    letter-spacing: -0.065em;
    white-space: nowrap;
}

.nb-question-prefix {
    justify-self: end;
    padding-right: 0.3em;
}

.nb-question-tail {
    white-space: nowrap;
}

.nb-question-tail > span {
    margin-left: 0.16em;
}

.nb-question-1 { font-size: clamp(5.2rem, 6.7vw, 9.2rem); }
.nb-question-2 { font-size: clamp(4.8rem, 6.1vw, 8.4rem); }
.nb-question-3 { font-size: clamp(4.4rem, 5.4vw, 7.4rem); }
.nb-question-4 { font-size: clamp(4rem, 4.7vw, 6.5rem); }

.nb-question mark {
    position: relative;
    z-index: 0;
    display: inline;
    justify-self: start;
    padding: 0 0.1em 0.04em;
    color: var(--nb-ink);
    background: transparent;
    isolation: isolate;
}

.nb-question mark::before {
    position: absolute;
    z-index: -1;
    inset: 30% -0.04em 0.08em;
    background: rgb(228 130 48 / 0.6);
    clip-path: polygon(1% 10%, 98% 0, 100% 89%, 2% 100%, 0 62%);
    content: "";
    transform: rotate(-0.7deg) skewX(-3deg);
}

.nb-question-2 mark::before,
.nb-question-4 mark::before {
    clip-path: polygon(0 0, 99% 8%, 97% 100%, 1% 88%);
    transform: rotate(0.8deg) skewX(2deg);
}

.nb-explainer {
    background: var(--nb-sand);
    border-bottom: 1px solid var(--nb-rule);
}

.nb-explainer-inner {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
    gap: clamp(5rem, 10vw, 15rem);
    padding-top: clamp(7rem, 10vw, 14rem);
    padding-bottom: clamp(7rem, 10vw, 14rem);
}

.nb-explainer-lead {
    margin: 0;
    font: 400 clamp(4.5rem, 6.3vw, 8.5rem)/0.98 Georgia, serif;
    letter-spacing: -0.055em;
}

.nb-explainer-copy {
    display: grid;
    align-content: start;
    gap: 4rem;
}

.nb-explainer-copy > div {
    padding-top: 1.5rem;
    border-top: 1px solid var(--nb-ink);
}

.nb-label {
    margin: 0 0 1.4rem;
    color: var(--nb-orange-dark);
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.nb-explainer-copy > div > p:last-child {
    margin: 0;
    font-size: clamp(1.8rem, 2vw, 2.35rem);
    line-height: 1.48;
}

.nb-engage {
    padding-top: clamp(7rem, 9vw, 12rem);
    padding-bottom: clamp(7rem, 9vw, 12rem);
    background: var(--nb-paper);
}

.nb-section-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 3rem;
    margin-bottom: 4rem;
}

.nb-section-heading h2 {
    max-width: 850px;
    margin: 0;
    font-size: clamp(4rem, 6vw, 8rem);
    line-height: 0.95;
    letter-spacing: -0.06em;
}

.nb-choice-row {
    display: grid;
    grid-template-columns: minmax(0, 1.7fr) minmax(280px, 1fr);
    gap: 1.5rem;
}

.nb-choice {
    position: relative;
    display: grid;
    grid-template-rows: auto 1fr auto;
    min-height: 340px;
    padding: clamp(2.5rem, 3vw, 4rem);
    overflow: hidden;
    color: var(--nb-ink);
    font: inherit;
    text-align: left;
    background: transparent;
    border: 1px solid var(--nb-ink);
    border-radius: 0;
    cursor: pointer;
    transition: color 180ms ease, background 180ms ease, transform 180ms ease;
}

.nb-choice:hover {
    transform: translateY(-3px);
}

.nb-choice:focus-visible,
.nb-participate-bridge:focus-visible,
.nb-resource-card:focus-visible,
.nb-participate-list a:focus-visible {
    outline: 3px solid var(--nb-ink);
    outline-offset: 4px;
}

.nb-choice-learn {
    color: var(--nb-cream);
    background: var(--nb-orange);
    border-color: var(--nb-orange);
}

.nb-choice-learn:hover,
.nb-choice-learn[aria-expanded="true"] {
    background: var(--nb-orange-dark);
    border-color: var(--nb-orange-dark);
}

.nb-choice-participate:hover,
.nb-choice-participate[aria-expanded="true"] {
    color: var(--nb-cream);
    background: var(--nb-ink);
}

.nb-choice-kicker {
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.nb-choice strong {
    align-self: end;
    display: block;
    padding: 4rem 0 1.4rem;
    font-size: clamp(4.5rem, 6vw, 8rem);
    line-height: 0.9;
    letter-spacing: -0.065em;
}

.nb-choice-participate strong {
    font-size: clamp(3.6rem, 4.4vw, 6rem);
}

.nb-choice-summary {
    max-width: 34rem;
    padding-right: 5rem;
    font-size: 1.55rem;
    line-height: 1.4;
}

.nb-choice-arrow {
    position: absolute;
    right: clamp(2.5rem, 3vw, 4rem);
    bottom: clamp(2.5rem, 3vw, 4rem);
    font-size: 3.4rem;
    line-height: 1;
    transition: transform 180ms ease;
}

.nb-choice[aria-expanded="true"] .nb-choice-arrow {
    transform: rotate(180deg);
}

.nb-panel[hidden] {
    display: none !important;
}

.nb-panel {
    margin-top: clamp(6rem, 8vw, 10rem);
    padding-top: clamp(5rem, 7vw, 8rem);
    border-top: 1px solid var(--nb-rule);
    animation: nb-reveal 300ms ease both;
}

@keyframes nb-reveal {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}

.nb-panel-heading {
    display: grid;
    grid-template-columns: minmax(130px, 0.34fr) minmax(0, 1fr);
    gap: clamp(3rem, 6vw, 9rem);
    align-items: start;
    margin-bottom: clamp(3.5rem, 5vw, 6rem);
}

.nb-panel-heading h3 {
    max-width: 900px;
    margin: 0;
    font-size: clamp(3.8rem, 6vw, 7.5rem);
    line-height: 0.95;
    letter-spacing: -0.06em;
}

.nb-resource-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
}

.nb-resource-card {
    display: grid;
    grid-template-rows: auto 1fr;
    overflow: hidden;
    color: var(--nb-ink);
    background: #fffdf9;
    border: 1px solid var(--nb-ink);
    transition: color 180ms ease, background 180ms ease, transform 180ms ease;
}

.nb-resource-card:hover {
    transform: translateY(-4px);
}

.nb-resource-image {
    position: relative;
    display: flex;
    min-height: clamp(230px, 24vw, 360px);
    overflow: hidden;
    border-bottom: 1px solid var(--nb-ink);
}

.nb-resource-image-essay {
    align-items: flex-end;
    justify-content: space-between;
    padding: clamp(2.5rem, 4vw, 5rem);
    color: var(--nb-cream);
    background: var(--nb-orange-dark);
}

.nb-resource-image-essay::before,
.nb-resource-image-essay::after {
    position: absolute;
    content: "";
}

.nb-resource-image-essay::before {
    top: -28%;
    right: 9%;
    width: clamp(13rem, 17vw, 24rem);
    aspect-ratio: 1;
    border: 1px solid rgb(255 248 237 / 0.4);
    border-radius: 50%;
}

.nb-resource-image-essay::after {
    top: 18%;
    left: 7%;
    width: 43%;
    height: 34%;
    background: repeating-linear-gradient(0deg, transparent 0 1.7rem, rgb(255 248 237 / 0.24) 1.7rem calc(1.7rem + 1px));
    transform: rotate(-4deg);
}

.nb-resource-symbol {
    position: relative;
    z-index: 1;
    font-size: clamp(5.5rem, 8vw, 10rem);
    font-weight: 780;
    line-height: 0.8;
    letter-spacing: -0.07em;
}

.nb-resource-equation {
    position: relative;
    z-index: 1;
    max-width: 16rem;
    font: 400 1.4rem/1.35 Georgia, serif;
    text-align: right;
}

.nb-resource-image-roadmap {
    align-items: center;
    padding: clamp(2.5rem, 4vw, 5rem);
    color: var(--nb-ink);
    background: var(--nb-sand);
}

.nb-roadmap-ten {
    font-size: clamp(11rem, 16vw, 22rem);
    font-weight: 780;
    line-height: 0.7;
    letter-spacing: -0.1em;
}

.nb-roadmap-label {
    margin-left: 2rem;
    font-size: clamp(1.4rem, 1.6vw, 2rem);
    font-weight: 760;
    line-height: 1.15;
    text-transform: uppercase;
}

.nb-roadmap-bars {
    position: absolute;
    right: clamp(2rem, 3vw, 4rem);
    bottom: clamp(2rem, 3vw, 4rem);
    display: flex;
    align-items: end;
    gap: 0.55rem;
}

.nb-roadmap-bars i {
    display: block;
    width: 0.8rem;
    height: 2.2rem;
    background: var(--nb-orange);
}

.nb-roadmap-bars i:nth-child(2) { height: 3.4rem; }
.nb-roadmap-bars i:nth-child(3) { height: 4.8rem; }
.nb-roadmap-bars i:nth-child(4) { height: 6.4rem; }
.nb-roadmap-bars i:nth-child(5) { height: 8.2rem; background: var(--nb-orange-dark); }

.nb-resource-copy {
    display: flex;
    flex-direction: column;
    min-height: 330px;
    padding: clamp(2.5rem, 3.5vw, 4.5rem);
}

.nb-resource-meta {
    color: var(--nb-orange-dark);
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.nb-resource-copy h4 {
    margin: auto 0 1.5rem;
    padding-top: 4rem;
    font-size: clamp(3rem, 3.6vw, 4.8rem);
    line-height: 0.98;
    letter-spacing: -0.055em;
}

.nb-resource-copy p {
    max-width: 48rem;
    margin: 0;
    font-size: 1.55rem;
    line-height: 1.5;
}

.nb-resource-link {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
    margin-top: 3rem;
    padding-top: 1.8rem;
    border-top: 1px solid var(--nb-rule);
    font-size: 1.35rem;
    font-weight: 780;
}

.nb-participate-bridge {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: clamp(2rem, 5vw, 8rem);
    align-items: center;
    width: 100%;
    margin-top: 1.5rem;
    padding: clamp(3rem, 5vw, 6rem);
    color: var(--nb-cream);
    font: inherit;
    text-align: left;
    background: var(--nb-orange);
    border: 0;
    cursor: pointer;
    transition: background 180ms ease;
}

.nb-participate-bridge:hover,
.nb-participate-bridge[aria-expanded="true"] {
    background: var(--nb-orange-dark);
}

.nb-participate-bridge > span:first-child {
    font: 400 clamp(2rem, 3vw, 3.4rem)/1.2 Georgia, serif;
}

.nb-participate-bridge strong {
    font-size: clamp(4rem, 6vw, 8rem);
    line-height: 0.9;
    letter-spacing: -0.06em;
}

.nb-participate-bridge-arrow {
    font-size: clamp(3rem, 5vw, 6rem);
}

.nb-participate-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin: 0;
    padding: 0;
    list-style: none;
    border: 1px solid var(--nb-ink);
}

.nb-participate-list li + li {
    border-left: 1px solid var(--nb-ink);
}

.nb-participate-list a {
    display: grid;
    grid-template-rows: auto 1fr auto;
    min-height: 320px;
    padding: clamp(2.5rem, 3vw, 4rem);
    color: var(--nb-ink);
    transition: color 180ms ease, background 180ms ease;
}

.nb-participate-list a:hover,
.nb-participate-list a:focus-visible {
    color: var(--nb-cream);
    background: var(--nb-orange-dark);
}

.nb-participate-number {
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: 0.13em;
}

.nb-participate-list a > span:nth-child(2) {
    align-self: end;
}

.nb-participate-list strong {
    display: block;
    margin-bottom: 1.4rem;
    font-size: clamp(2.6rem, 3vw, 4rem);
    line-height: 1;
    letter-spacing: -0.05em;
}

.nb-participate-list small {
    display: block;
    max-width: 32rem;
    font-size: 1.45rem;
    line-height: 1.45;
}

.nb-participate-arrow {
    justify-self: end;
    margin-top: 2.5rem;
    font-size: 2.8rem;
}

.nb-latest {
    border-top: 1px solid var(--nb-rule);
}

.nb-latest .gh-container {
    padding-top: clamp(6rem, 8vw, 11rem);
    padding-bottom: clamp(6rem, 8vw, 11rem);
}

.nb-latest .gh-container-title {
    font-size: 1.2rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.home-template .gh-footer {
    background: var(--nb-sand);
}

.nb-document {
    max-width: 920px;
    margin: 0 auto;
    padding: clamp(6rem, 10vw, 14rem) max(2rem, 5vw) 12rem;
    color: var(--nb-ink);
}

.nb-document-back {
    display: inline-block;
    margin-bottom: 6rem;
    color: var(--nb-orange-dark);
    font-size: 1.3rem;
    font-weight: 700;
}

.nb-document-status {
    margin: 0 0 2rem;
    color: var(--nb-orange-dark);
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.nb-document h1 {
    margin: 0 0 5rem;
    font-size: clamp(5rem, 8vw, 10rem);
    line-height: 0.9;
    letter-spacing: -0.07em;
}

.nb-document-lead {
    margin-bottom: 7rem;
    font: 400 clamp(2.6rem, 4vw, 4.2rem)/1.25 Georgia, serif;
}

.nb-document section {
    padding: 3.5rem 0;
    border-top: 1px solid var(--nb-rule);
}

.nb-document h2 {
    margin: 0 0 1.8rem;
    font-size: clamp(2.8rem, 4vw, 4.4rem);
    letter-spacing: -0.045em;
}

.nb-document section p,
.nb-document li {
    font-size: 1.8rem;
    line-height: 1.65;
}

.nb-document ol,
.nb-document ul {
    padding-left: 1.4em;
}

.nb-roadmap-week {
    display: grid;
    grid-template-columns: 7rem 1fr;
    gap: 2rem;
}

.nb-roadmap-week strong {
    color: var(--nb-orange-dark);
    font-size: 1.2rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.nb-document-cta {
    display: inline-block;
    margin-top: 3rem;
    padding: 1.4rem 2rem;
    color: var(--nb-cream);
    background: var(--nb-orange);
    border-radius: 999px;
    font-size: 1.4rem;
    font-weight: 750;
}

@media (max-width: 900px) {
    .nb-explainer-inner { grid-template-columns: 1fr; }
    .nb-resource-grid { grid-template-columns: 1fr; }
    .nb-participate-list { grid-template-columns: 1fr; }
    .nb-participate-list a { min-height: 250px; }
    .nb-participate-list li + li {
        border-top: 1px solid var(--nb-ink);
        border-left: 0;
    }
}

@media (max-width: 600px) {
    .nb-intro-inner {
        min-height: auto;
        padding-top: 4.5rem;
        padding-bottom: 6rem;
    }

    .nb-intro-meta {
        align-items: flex-start;
        flex-direction: column;
        gap: 1.2rem;
    }

    .nb-platform { max-width: 30rem; }
    .nb-pulse { margin-top: 0.45rem; }
    .nb-questions { margin-top: 7rem; }
    .nb-question { line-height: 1; }
    .nb-question-1 { font-size: 6.15vw; }
    .nb-question-2 { font-size: 6vw; }
    .nb-question-3 { font-size: 5.8vw; }
    .nb-question-4 { font-size: 5.6vw; }

    .nb-explainer-inner {
        gap: 5.5rem;
        padding-top: 7rem;
        padding-bottom: 7rem;
    }

    .nb-explainer-lead { font-size: 12vw; }
    .nb-section-heading { display: block; }
    .nb-section-heading h2 { font-size: 12vw; }
    .nb-choice-row { grid-template-columns: 1fr; }
    .nb-choice { min-height: 245px; }
    .nb-choice-participate { min-height: 215px; }
    .nb-panel-heading { grid-template-columns: 1fr; gap: 1.5rem; }
    .nb-resource-image { min-height: 220px; }
    .nb-resource-copy { min-height: 290px; }
    .nb-participate-bridge { grid-template-columns: 1fr auto; }
    .nb-participate-bridge > span:first-child { grid-column: 1 / -1; }
    .nb-roadmap-week { grid-template-columns: 1fr; gap: 0.8rem; }
}

@media (prefers-reduced-motion: reduce) {
    .nb-pulse { animation: none; }
    .nb-choice,
    .nb-choice-arrow,
    .nb-resource-card,
    .nb-participate-bridge,
    .nb-participate-list a { transition: none; }
    .nb-panel { animation: none; }
}