.ethernaut-series-nav{margin: 2.25rem 0 2.5rem}.ethernaut-series-nav__bar{align-items: center;background: var(--sch-panel);border: 1px solid var(--sch-line);border-radius: 14px;display: grid;gap: 0.8rem 1rem;grid-template-columns: 36px minmax(0,1fr) auto;padding: 0.75rem 1rem}.ethernaut-series-icon{background-color: currentColor;display: block;-webkit-mask-image: var(--ethernaut-series-icon);mask-image: var(--ethernaut-series-icon);-webkit-mask-position: center;mask-position: center;-webkit-mask-repeat: no-repeat;mask-repeat: no-repeat;-webkit-mask-size: contain;mask-size: contain}.ethernaut-series-icon--ethernaut-fallback{--ethernaut-series-icon: url('../images/ctfs/levels/ethernaut-fallback.svg')}.ethernaut-series-icon--ethernaut-fallout{--ethernaut-series-icon: url('../images/ctfs/levels/ethernaut-fallout.svg')}.ethernaut-series-icon--ethernaut-coin-flip{--ethernaut-series-icon: url('../images/ctfs/levels/ethernaut-coin-flip.svg')}.ethernaut-series-icon--ethernaut-telephone{--ethernaut-series-icon: url('../images/ctfs/levels/ethernaut-telephone.svg')}.ethernaut-series-icon--ethernaut-token{--ethernaut-series-icon: url('../images/ctfs/levels/ethernaut-token.svg')}.ethernaut-series-icon--ethernaut-delegation{--ethernaut-series-icon: url('../images/ctfs/levels/ethernaut-delegation.svg')}.ethernaut-series-icon--ethernaut-force{--ethernaut-series-icon: url('../images/ctfs/levels/ethernaut-force.svg')}.ethernaut-series-icon--ethernaut-vault{--ethernaut-series-icon: url('../images/ctfs/levels/ethernaut-vault.svg')}.ethernaut-series-icon--ethernaut-king{--ethernaut-series-icon: url('../images/ctfs/levels/ethernaut-king.svg')}.ethernaut-series-icon--ethernaut-reentrance{--ethernaut-series-icon: url('../images/ctfs/levels/ethernaut-reentrance.svg')}.ethernaut-series-icon--ethernaut-elevator{--ethernaut-series-icon: url('../images/ctfs/levels/ethernaut-elevator.svg')}.ethernaut-series-icon--ethernaut-privacy{--ethernaut-series-icon: url('../images/ctfs/levels/ethernaut-privacy.svg')}.ethernaut-series-nav__icon{color: var(--accent-secondary-strong);height: 36px;width: 36px}.ethernaut-series-nav__current{display: grid;gap: 0.2rem;margin: 0;min-width: 0}.article-content .ethernaut-series-nav__current{margin: 0}.ethernaut-series-nav__current>span,.ethernaut-series-nav__item-copy small,.ethernaut-series-pagination__step small,.ethernaut-series-card__level{color: var(--sch-dim);font-family: var(--font-mono);font-size: 0.68rem;font-weight: 700;letter-spacing: 0.08em;line-height: 1.3;text-transform: uppercase}.ethernaut-series-nav__current strong{color: var(--sch-ink);font-size: 0.92rem;line-height: 1.35}.ethernaut-series-nav__actions{align-items: center;display: flex;gap: 0.75rem}.ethernaut-series-nav__index-link,.ethernaut-series-nav__details summary{align-items: center;color: var(--sch-ink);cursor: pointer;display: inline-flex;font-size: 0.84rem;font-weight: 700;gap: 0.45rem;justify-content: center;min-height: 40px;padding: 0.45rem 0.75rem;text-decoration: none;white-space: nowrap}.ethernaut-series-nav__index-link:hover,.ethernaut-series-nav__details summary:hover{color: var(--accent-secondary-strong)}.ethernaut-series-nav__details{position: relative}.ethernaut-series-nav__details summary{border: 1px solid var(--sch-line);border-radius: 10px;list-style: none}.ethernaut-series-nav__details summary::-webkit-details-marker{display: none}.ethernaut-series-nav__details summary span{color: var(--accent-secondary-strong);font-size: 1rem;transition: transform 160ms ease}.ethernaut-series-nav__details[open] summary span{transform: rotate(180deg)}.ethernaut-series-nav__details summary:focus-visible,.ethernaut-series-nav__index-link:focus-visible,.ethernaut-series-nav__item:focus-visible,.ethernaut-series-pagination a:focus-visible,.ethernaut-series-card:focus-visible{outline: 2px solid var(--accent-secondary-strong);outline-offset: 3px}.ethernaut-series-nav__list{background: var(--sch-panel);border: 1px solid var(--sch-line-strong);border-radius: 14px;box-shadow: 0 18px 48px rgba(0,0,0,0.3);display: grid;gap: 0.45rem;grid-template-columns: repeat(3,minmax(0,1fr));left: 0;list-style: none;margin: 0.6rem 0 0;max-height: min(430px,65vh);left: auto;overflow: auto;padding: 0.65rem;position: absolute;right: 0;top: calc(100% + 0.6rem);z-index: 20;width: min(760px,82vw)}.article-content .ethernaut-series-nav__list{margin: 0;padding: 0.65rem}.article-content .ethernaut-series-nav__list>li{margin: 0;padding: 0}.article-content .ethernaut-series-nav__list>li::before{content: none}.ethernaut-series-nav__list li{min-width: 0}.ethernaut-series-nav__item{align-items: center;background: var(--sch-sunken);border: 1px solid var(--sch-line);border-radius: 10px;color: var(--sch-body);display: flex;gap: 0.6rem;height: 100%;min-height: 58px;padding: 0.55rem;text-decoration: none;transition: background-color 140ms ease,border-color 140ms ease,color 140ms ease}.ethernaut-series-nav__item:hover{background: var(--sch-raised);border-color: var(--sch-line-strong);color: var(--sch-ink)}.ethernaut-series-nav__item.is-current{background: var(--sch-raised);border-color: var(--accent-primary);color: var(--sch-ink)}.ethernaut-series-nav__item-icon{color: var(--accent-secondary-strong);flex: 0 0 32px;height: 32px;width: 32px}.ethernaut-series-nav__item-copy{display: grid;gap: 0.16rem;min-width: 0}.ethernaut-series-nav__item-copy small{font-size: 0.58rem}.ethernaut-series-nav__item-copy strong{color: inherit;font-size: 0.78rem;line-height: 1.25;overflow-wrap: anywhere}.ethernaut-series-nav__you-are-here{color: var(--accent-secondary-strong);font-size: 0.62rem;font-weight: 700;margin-left: auto;white-space: nowrap}.ethernaut-series-pagination{align-items: stretch;border: 1px solid var(--sch-line);border-radius: 14px;display: grid;gap: 0.5rem;grid-template-columns: minmax(0,1fr) auto minmax(0,1fr);margin: 1.75rem 0 0;padding: 0.6rem}.ethernaut-series-pagination__step{align-items: center;border: 1px solid transparent;border-radius: 10px;color: var(--sch-ink);display: flex;gap: 0.7rem;min-width: 0;padding: 0.55rem 0.75rem;text-decoration: none;transition: background-color 140ms ease,border-color 140ms ease}.ethernaut-series-pagination__step:hover{background: var(--sch-raised);border-color: var(--sch-line-strong)}.ethernaut-series-pagination__arrow{color: var(--accent-secondary-strong);flex: 0 0 auto;font-size: 1.1rem;line-height: 1}.ethernaut-series-pagination__copy{display: grid;gap: 0.2rem;min-width: 0}.ethernaut-series-pagination__step strong{color: var(--sch-ink);font-size: 0.82rem;line-height: 1.3;overflow-wrap: anywhere}.ethernaut-series-pagination__step.is-next{justify-content: flex-end;text-align: right}.ethernaut-series-pagination__index{align-items: center;align-self: center;color: var(--accent-secondary-strong);display: inline-flex;font-size: 0.82rem;font-weight: 700;justify-content: center;padding: 0.5rem;text-align: center;text-decoration: none;white-space: nowrap}.ethernaut-series-pagination__index:hover{color: var(--sch-ink)}.ethernaut-series-page{min-height: 70vh;padding-bottom: clamp(3rem,7vw,6rem)}.ethernaut-series-container{max-width: 1120px}.ethernaut-series-hero{margin: 1rem 0 2rem;padding: clamp(1.35rem,4vw,2.5rem)}.ethernaut-series-hero__copy{max-width: 760px}.ethernaut-series-hero h1{font-size: clamp(2rem,4vw,3.2rem);letter-spacing: -0.045em;line-height: 1.08;margin: 0.45rem 0 0.8rem}.ethernaut-series-hero p:not(.sfc-label){color: var(--sch-body);font-size: 1rem;line-height: 1.7;margin: 0;max-width: 66ch}.ethernaut-series-hero__meta{align-items: center;display: flex;flex-wrap: wrap;gap: 0.8rem 1.25rem;margin-top: 1.2rem}.ethernaut-series-hero__meta>span{color: var(--sch-dim);font-family: var(--font-mono);font-size: 0.75rem;font-weight: 700;letter-spacing: 0.06em;text-transform: uppercase}.ethernaut-series-hero__meta a{color: var(--accent-secondary-strong);font-size: 0.84rem;font-weight: 700;text-decoration: none}.ethernaut-series-hero__meta a:hover{color: var(--sch-ink)}.ethernaut-series-grid{display: grid;gap: 1rem;grid-template-columns: repeat(3,minmax(0,1fr));list-style: none;margin: 0;padding: 0}.ethernaut-series-grid>li{min-width: 0}.ethernaut-series-card{color: var(--sch-body);display: flex;flex-direction: column;box-sizing: border-box;gap: 0.75rem;height: 100%;padding: 1.15rem;text-decoration: none;transition: background-color 140ms ease,border-color 140ms ease}.ethernaut-series-card:hover{background: var(--sch-raised);border-color: var(--sch-line-strong)}.ethernaut-series-card__head{align-items: center;display: flex;gap: 0.65rem;min-height: 40px}.ethernaut-series-card__heading{display: grid;gap: 0.2rem;min-width: 0}.ethernaut-series-card__icon{color: var(--accent-secondary-strong);flex: 0 0 40px;height: 40px;width: 40px}.ethernaut-series-card__draft{background: var(--sch-sunken);border: 1px solid var(--sch-line);border-radius: 999px;color: var(--sch-dim);font-size: 0.65rem;font-weight: 700;margin-left: auto;padding: 0.22rem 0.5rem;text-transform: uppercase}.ethernaut-series-card__title{color: var(--sch-ink);font-family: var(--font-display);font-size: 1.12rem;font-weight: 700;letter-spacing: -0.02em;line-height: 1.3}.ethernaut-series-card__summary{color: var(--sch-dim);font-size: 0.88rem;line-height: 1.55}.ethernaut-series-card__link{color: var(--accent-secondary-strong);font-size: 0.82rem;font-weight: 700;margin-top: auto;padding-top: 0.1rem}.ethernaut-series-empty{background: var(--sch-panel);border: 1px solid var(--sch-line);border-radius: 14px;color: var(--sch-body);padding: 1.3rem}@media (max-width: 900px){.ethernaut-series-grid{grid-template-columns: repeat(2,minmax(0,1fr))}.ethernaut-series-nav__list{grid-template-columns: repeat(2,minmax(0,1fr));bottom: calc(100% + 0.6rem);top: auto}}@media (max-width: 620px){.ethernaut-series-nav__bar{gap: 0.6rem 0.75rem;grid-template-columns: 36px minmax(0,1fr);padding: 0.7rem}.ethernaut-series-nav__actions{grid-column: 2;justify-content: space-between}.ethernaut-series-nav__current strong{font-size: 0.8rem}.ethernaut-series-nav__index-link{justify-content: flex-start;min-height: 34px;padding-inline: 0}.ethernaut-series-nav__details summary{font-size: 0.75rem;padding-inline: 0.55rem}.ethernaut-series-nav__list{bottom: calc(100% + 0.6rem);grid-template-columns: minmax(0,1fr);left: auto;max-height: min(38vh,320px);right: 0;top: auto;width: min(320px,calc(100vw - 3rem))}.ethernaut-series-pagination{grid-template-columns: minmax(0,1fr) minmax(0,1fr)}.ethernaut-series-pagination__index{grid-column: 1 / -1;grid-row: 1;padding-block: 0.45rem}.ethernaut-series-pagination__step{grid-row: 2;padding-inline: 0.4rem}.ethernaut-series-pagination__step.is-next{grid-column: 2}.ethernaut-series-pagination__step strong{font-size: 0.73rem}.ethernaut-series-pagination__step.is-empty{display: none}.ethernaut-series-grid{grid-template-columns: minmax(0,1fr)}.ethernaut-series-card{min-height: 0}}@media (max-width: 360px){.ethernaut-series-nav__actions{gap: 0.4rem}.ethernaut-series-nav__index-link{font-size: 0.72rem}.ethernaut-series-nav__details summary{font-size: 0.65rem;gap: 0.25rem;padding-inline: 0.38rem}}.ethernaut-series-nav__details.is-open-below .ethernaut-series-nav__list{bottom: auto;top: calc(100% + 0.6rem);margin: 0}.ethernaut-series-nav__details.is-open-above .ethernaut-series-nav__list{bottom: calc(100% + 0.6rem);top: auto;margin: 0}@media (prefers-reduced-motion: reduce){.ethernaut-series-nav__details summary span,.ethernaut-series-nav__item,.ethernaut-series-pagination__step,.ethernaut-series-card{transition: none}}