* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background: var(--space-black);
}

body {
    margin: 0;
    overflow-x: hidden;
    background: var(--space-black);
    color: var(--primary-text);
    font-family: var(--body);
    font-size: 16px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

body.menu-open {
    overflow: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input {
    font: inherit;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--focus);
    outline-offset: 4px;
}

.page-gutter {
    width: min(100%, calc(var(--content-max) + (var(--gutter) * 2)));
    margin-inline: auto;
    padding-inline: var(--gutter);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: fixed;
    top: 12px;
    left: 16px;
    z-index: 100;
    padding: 10px 14px;
    background: var(--primary-text);
    color: var(--space-black);
    transform: translateY(-150%);
    transition: transform 180ms ease;
}

.skip-link:focus {
    transform: translateY(0);
}

.brand {
    display: inline-block;
    color: var(--primary-text);
    font-family: var(--body);
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: 0.31em;
    line-height: 1;
    white-space: nowrap;
}

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 20;
    border-bottom: 1px solid transparent;
    transition: background-color 220ms ease, border-color 220ms ease;
}

.site-header.is-scrolled {
    background: rgba(3, 7, 11, 0.92);
    border-color: var(--hairline-dark);
}

.site-header__inner {
    display: flex;
    align-items: center;
    min-height: 84px;
}

.desktop-nav {
    display: flex;
    gap: clamp(28px, 4vw, 62px);
    margin: 0 auto;
    padding-left: 8%;
    color: rgba(241, 238, 231, 0.84);
    font-size: 0.88rem;
    letter-spacing: 0.04em;
}

.desktop-nav a,
.header-cta,
.mobile-menu__nav a,
.source-list a,
.mission-list__link,
.inline-link,
.site-footer a {
    transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.desktop-nav a:hover,
.desktop-nav a:focus-visible,
.site-footer a:hover,
.site-footer a:focus-visible {
    color: var(--copper-hover);
}

.header-cta {
    display: inline-flex;
    align-items: center;
    gap: 18px;
    min-height: 46px;
    padding: 0 19px;
    border: 1px solid rgba(200, 117, 67, 0.8);
    color: var(--copper-hover);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    white-space: nowrap;
}

.header-cta:hover,
.header-cta:focus-visible {
    border-color: var(--copper-hover);
    background: rgba(200, 117, 67, 0.1);
}

.header-cta svg,
.button svg,
.inline-link svg,
.mission-list__link svg,
.signup-note svg,
.connect-option svg,
.source-list svg,
.source-note svg,
.mobile-menu__cta svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: square;
    stroke-linejoin: miter;
    stroke-width: 1.5;
    flex: 0 0 auto;
}

.menu-toggle,
.mobile-menu {
    display: none;
}

.mobile-menu[hidden] {
    display: none;
}

.hero {
    position: relative;
    display: flex;
    min-height: 840px;
    height: min(100svh, 840px);
    overflow: hidden;
    isolation: isolate;
    background: var(--space-black);
}

.hero__media {
    position: absolute;
    inset: 0;
    z-index: -1;
    display: block;
    overflow: hidden;
}

.hero__media img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center bottom;
    animation: asteroid-drift 26s ease-in-out infinite alternate;
}

.hero__content {
    position: relative;
    display: flex;
    width: 100%;
    flex-direction: column;
    align-items: center;
    padding-top: 195px;
    text-align: center;
}

.hero__title,
.encounter-intro h2,
.why-section h2,
.missions-intro h2,
.connect-section h2,
.updates-section h2 {
    margin: 0;
    font-family: var(--display);
    font-weight: 500;
    letter-spacing: -0.035em;
}

.hero__title {
    max-width: 1000px;
    font-size: clamp(3rem, 4.5vw, 5.4rem);
    line-height: 1;
}

.countdown {
    width: 100%;
    margin-top: 64px;
}

.countdown__grid {
    display: grid;
    grid-template-columns: 1.08fr 1fr 1fr 1fr;
    width: 100%;
    margin: 0;
}

.countdown__unit {
    display: flex;
    min-width: 0;
    flex-direction: column;
    align-items: center;
    border-left: 1px solid var(--hairline-light);
}

.countdown__unit:first-child {
    border-left: 0;
}

.countdown__value {
    margin: 0;
    color: var(--primary-text);
    font-family: var(--countdown);
    font-size: clamp(6rem, 11vw, 10rem);
    font-weight: 500;
    letter-spacing: 0.03em;
    line-height: 0.76;
    font-variant-numeric: tabular-nums lining-nums;
    transition: opacity 160ms ease, transform 160ms ease;
}

.countdown__unit dt {
    margin-top: 28px;
    color: rgba(241, 238, 231, 0.8);
    font-family: var(--body);
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.28em;
    line-height: 1;
}

.hero__date {
    margin: 51px 0 0;
    color: var(--primary-text);
    font-size: 0.92rem;
    font-weight: 500;
    letter-spacing: 0.27em;
    line-height: 1.4;
}

.hero__date time {
    white-space: nowrap;
}

.hero__date-mobile {
    display: none;
}

.local-time {
    min-height: 22px;
    margin-top: 11px;
}

.text-button {
    padding: 4px 0;
    border: 0;
    border-bottom: 1px solid rgba(241, 238, 231, 0.35);
    background: transparent;
    color: var(--muted-text);
    cursor: pointer;
    font-size: 0.7rem;
    letter-spacing: 0.08em;
}

.text-button:hover,
.text-button:focus-visible {
    border-color: var(--copper-hover);
    color: var(--copper-hover);
}

.local-time__output {
    max-width: 600px;
    margin: 7px auto 0;
    color: var(--muted-text);
    font-size: 0.72rem;
    letter-spacing: 0.04em;
}

.hero__safety {
    margin: 24px 0 0;
    font-size: clamp(1.28rem, 1.8vw, 1.62rem);
    line-height: 1.2;
}

.hero__actions {
    display: flex;
    justify-content: center;
    gap: 26px;
    margin-top: 48px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
    min-width: 294px;
    min-height: 58px;
    padding: 13px 25px;
    border: 1px solid transparent;
    border-radius: 2px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    line-height: 1.2;
    transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.button:hover,
.button:focus-visible {
    transform: translateY(-2px);
}

.button--primary {
    border-color: var(--copper);
    background: var(--copper);
    color: var(--space-black);
}

.button--primary:hover,
.button--primary:focus-visible {
    border-color: var(--copper-hover);
    background: var(--copper-hover);
}

.button--secondary {
    border-color: rgba(241, 238, 231, 0.72);
    background: rgba(3, 7, 11, 0.08);
    color: var(--primary-text);
}

.button--secondary:hover,
.button--secondary:focus-visible {
    border-color: var(--primary-text);
    background: rgba(241, 238, 231, 0.08);
}

.section {
    position: relative;
    overflow: hidden;
}

.section__inner {
    padding-top: clamp(92px, 9vw, 150px);
    padding-bottom: clamp(92px, 9vw, 150px);
}

.encounter-section {
    background: var(--deep-indigo);
}

.encounter-section .section__inner {
    padding-top: clamp(68px, 6vw, 88px);
}

.encounter-intro {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.75fr);
    gap: clamp(44px, 9vw, 150px);
    align-items: end;
}

.encounter-intro h2 {
    font-size: clamp(3.3rem, 6vw, 6.5rem);
    line-height: 0.9;
}

.encounter-intro p,
.why-section__copy > p,
.missions-intro > p,
.updates-section__copy > p {
    max-width: 680px;
    margin: 0;
    color: var(--muted-text);
    font-size: clamp(1.15rem, 1.8vw, 1.45rem);
    line-height: 1.5;
}

.fact-rail {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: clamp(72px, 8vw, 120px);
    border-top: 1px solid var(--hairline-light);
    border-bottom: 1px solid var(--hairline-light);
}

.fact-rail__item {
    min-height: 192px;
    padding: 25px 24px 30px 0;
}

.fact-rail__item + .fact-rail__item {
    padding-left: 24px;
    border-left: 1px solid var(--hairline-light);
}

.fact-rail__label,
.eyebrow,
.section-kicker,
.signup-form label,
.signup-form__privacy,
.mission-list__row p,
.confidence-label,
.source-note,
.site-footer__bottom,
.orbit-figure span {
    font-family: var(--body);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    line-height: 1.4;
    text-transform: uppercase;
}

.fact-rail__label {
    color: var(--copper-hover);
}

.fact-rail__item p {
    max-width: 230px;
    margin: 29px 0 0;
    color: var(--primary-text);
    font-size: 1rem;
    line-height: 1.45;
}

.source-note {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 27px;
    margin-top: 23px;
    color: var(--faint-text);
    letter-spacing: 0.08em;
    text-transform: none;
}

.source-note a {
    color: var(--primary-text);
}

.source-note a:hover,
.source-note a:focus-visible {
    color: var(--copper-hover);
}

.source-note a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.why-section {
    background: var(--space-black);
}

.why-section__inner {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
    gap: clamp(50px, 11vw, 180px);
    align-items: center;
}

.why-section__copy {
    position: relative;
    padding-left: 32px;
}

.why-section__copy::before {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 1px;
    background: var(--copper);
    content: "";
}

.section-kicker,
.eyebrow {
    display: block;
    margin-bottom: 24px;
    color: var(--copper-hover);
}

.why-section h2,
.missions-intro h2,
.updates-section h2 {
    max-width: 720px;
    font-size: clamp(3.2rem, 5.5vw, 6rem);
    line-height: 0.92;
}

.why-section__copy > p {
    margin-top: 34px;
    font-size: 1.07rem;
}

.inline-link {
    display: inline-flex;
    align-items: center;
    gap: 13px;
    margin-top: 34px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--copper);
    color: var(--primary-text);
    font-size: 0.85rem;
    letter-spacing: 0.06em;
}

.inline-link:hover,
.inline-link:focus-visible {
    color: var(--copper-hover);
}

.orbit-figure {
    position: relative;
    min-height: 480px;
    border-top: 1px solid var(--hairline-dark);
    border-bottom: 1px solid var(--hairline-dark);
}

.orbit-figure svg {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 480px;
}

.orbit-figure__orbit,
.orbit-figure__curve {
    fill: none;
    stroke: var(--copper);
    stroke-width: 1.25;
}

.orbit-figure__orbit--faint {
    opacity: 0.3;
}

.orbit-figure__earth-glow {
    fill: none;
    stroke: rgba(141, 200, 238, 0.38);
    stroke-width: 1;
}

.orbit-figure__earth {
    fill: var(--earth-blue);
    opacity: 0.84;
}

.orbit-figure__point {
    fill: var(--copper-hover);
}

.orbit-figure__tick {
    fill: none;
    stroke: var(--primary-text);
    stroke-width: 1.25;
}

.orbit-figure span {
    position: absolute;
    right: 20px;
    bottom: 20px;
    color: var(--muted-text);
    letter-spacing: 0.1em;
    text-transform: none;
}

.missions-section {
    background: var(--deep-indigo);
}

.missions-section__inner {
    display: grid;
    grid-template-columns: minmax(240px, 0.7fr) minmax(0, 1.3fr);
    gap: clamp(48px, 10vw, 160px);
    align-items: start;
}

.missions-intro > p {
    margin-top: 31px;
    font-size: 1rem;
}

.mission-list {
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--hairline-light);
    list-style: none;
}

.mission-list__row {
    display: grid;
    grid-template-columns: 52px minmax(180px, 1fr) 120px minmax(150px, auto);
    gap: 24px;
    align-items: center;
    min-height: 104px;
    border-bottom: 1px solid var(--hairline-light);
}

.mission-list__number {
    color: var(--copper);
    font-size: 0.76rem;
    letter-spacing: 0.12em;
}

.mission-list__name h3 {
    margin: 0;
    font-family: var(--countdown);
    font-size: 1.8rem;
    font-weight: 500;
    letter-spacing: 0.05em;
}

.mission-list__row p {
    margin: 3px 0 0;
    color: var(--faint-text);
    font-size: 0.64rem;
    letter-spacing: 0.1em;
}

.confidence-label {
    color: var(--muted-text);
    font-size: 0.66rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.confidence-label--confirmed {
    color: var(--earth-blue);
}

.confidence-label--planned {
    color: var(--copper-hover);
}

.mission-list__link {
    display: inline-flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    color: var(--muted-text);
    font-size: 0.75rem;
    letter-spacing: 0.04em;
}

.mission-list__link:hover,
.mission-list__link:focus-visible {
    color: var(--primary-text);
}

.connect-section {
    background: var(--night-surface);
}

.connect-section__inner {
    display: grid;
    grid-template-columns: minmax(0, 0.88fr) minmax(320px, 1.12fr);
    gap: clamp(48px, 10vw, 160px);
    align-items: center;
}

.connect-section__copy {
    position: relative;
    padding-left: 32px;
}

.connect-section__copy::before {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 1px;
    background: var(--copper);
    content: "";
}

.connect-section h2 {
    max-width: 630px;
    font-size: clamp(3.2rem, 5.4vw, 6rem);
    line-height: 0.92;
}

.connect-section__copy > p {
    max-width: 560px;
    margin: 34px 0 0;
    color: var(--muted-text);
    font-size: 1.08rem;
    line-height: 1.5;
}

.connect-options {
    border-top: 1px solid var(--hairline-light);
}

.connect-option {
    display: flex;
    width: 100%;
    min-height: 104px;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    padding: 18px 0;
    border: 0;
    border-bottom: 1px solid var(--hairline-light);
    background: transparent;
    color: var(--primary-text);
    cursor: pointer;
    text-align: left;
    transition: color 180ms ease, padding 180ms ease, border-color 180ms ease;
}

.connect-option:hover,
.connect-option:focus-visible {
    padding-inline: 10px;
    color: var(--copper-hover);
}

.connect-option span {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.connect-option strong {
    font-family: var(--countdown);
    font-size: clamp(1.7rem, 2.7vw, 2.4rem);
    font-weight: 500;
    letter-spacing: 0.04em;
    line-height: 1;
}

.connect-option small {
    color: var(--muted-text);
    font-family: var(--body);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.connect-option svg {
    width: 22px;
    height: 22px;
}

.updates-section {
    background: var(--space-black);
}

.updates-section__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.75fr);
    gap: clamp(48px, 11vw, 180px);
    align-items: center;
}

.updates-section__copy > p {
    max-width: 560px;
    margin-top: 34px;
    font-size: 1.08rem;
}

.signup-panel {
    min-height: 300px;
    padding: 36px;
    border-top: 1px solid var(--copper);
    border-bottom: 1px solid var(--hairline-light);
}

.signup-form {
    display: flex;
    flex-direction: column;
}

.signup-form label {
    margin-bottom: 10px;
    color: var(--muted-text);
    font-size: 0.68rem;
    letter-spacing: 0.11em;
}

.signup-form input[type="email"] {
    width: 100%;
    min-height: 52px;
    padding: 0 15px;
    border: 1px solid var(--hairline-light);
    border-radius: 0;
    background: transparent;
    color: var(--primary-text);
    font-size: 0.9rem;
}

.signup-form input[type="email"]::placeholder {
    color: var(--faint-text);
}

.signup-form input[type="email"]:focus {
    border-color: var(--focus);
    outline: 0;
}

.signup-form .button {
    width: 100%;
    margin-top: 18px;
}

.signup-form__privacy {
    margin: 18px 0 0;
    color: var(--faint-text);
    font-size: 0.64rem;
    font-weight: 400;
    letter-spacing: 0.03em;
    text-transform: none;
}

.signup-form__privacy a,
.signup-note a {
    color: var(--primary-text);
    text-decoration: underline;
    text-decoration-color: var(--copper);
    text-underline-offset: 4px;
}

.signup-form__trap {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.signup-note {
    display: flex;
    height: 100%;
    min-height: 225px;
    flex-direction: column;
    justify-content: center;
}

.signup-note p {
    margin: 0;
    color: var(--primary-text);
    font-family: var(--display);
    font-size: clamp(2.1rem, 3.7vw, 3.6rem);
    line-height: 0.98;
}

.signup-note a {
    display: inline-flex;
    align-items: center;
    align-self: flex-start;
    gap: 12px;
    margin-top: 28px;
    font-size: 0.8rem;
}

.enquiry-lightbox {
    position: fixed;
    inset: 0;
    z-index: 80;
    display: grid;
    place-items: center;
    padding: 28px;
}

.enquiry-lightbox[hidden] {
    display: none;
}

.enquiry-lightbox__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(3, 7, 11, 0.84);
    cursor: pointer;
}

.enquiry-modal {
    position: relative;
    width: min(100%, 760px);
    max-height: min(900px, calc(100svh - 56px));
    overflow: auto;
    padding: clamp(28px, 4.5vw, 58px);
    border: 1px solid var(--hairline-light);
    border-top: 2px solid var(--copper);
    background: var(--modal-surface);
    box-shadow: 0 24px 90px rgba(0, 0, 0, 0.42);
}

.enquiry-modal__topline {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
}

.enquiry-modal .section-kicker {
    margin: 0;
}

.enquiry-modal__close {
    display: inline-flex;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    margin: -12px -12px 0 0;
    padding: 0;
    border: 1px solid var(--hairline-light);
    background: transparent;
    color: var(--primary-text);
    cursor: pointer;
    transition: border-color 180ms ease, color 180ms ease, background-color 180ms ease;
}

.enquiry-modal__close:hover,
.enquiry-modal__close:focus-visible {
    border-color: var(--copper-hover);
    background: rgba(200, 117, 67, 0.1);
    color: var(--copper-hover);
}

.enquiry-modal__close svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: square;
    stroke-width: 1.5;
}

.enquiry-modal__heading {
    max-width: 610px;
    margin-top: 36px;
}

.enquiry-modal__heading h2 {
    margin: 0;
    font-family: var(--display);
    font-size: clamp(2.8rem, 5.4vw, 5rem);
    font-weight: 500;
    letter-spacing: -0.035em;
    line-height: 0.92;
}

.enquiry-modal__heading p {
    max-width: 520px;
    margin: 25px 0 0;
    color: var(--muted-text);
    font-size: 1rem;
    line-height: 1.5;
}

.enquiry-form {
    margin-top: 42px;
}

.enquiry-form__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 25px 20px;
}

.enquiry-field {
    min-width: 0;
}

.enquiry-field--wide {
    grid-column: 1 / -1;
}

.enquiry-field label {
    display: block;
    margin-bottom: 9px;
    color: var(--muted-text);
    font-family: var(--body);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    line-height: 1.4;
    text-transform: uppercase;
}

.enquiry-field label span {
    color: var(--copper-hover);
}

.enquiry-field input,
.enquiry-field textarea {
    display: block;
    width: 100%;
    border: 1px solid var(--hairline-light);
    border-radius: 0;
    background: rgba(3, 7, 11, 0.22);
    color: var(--primary-text);
    font-family: var(--body);
    font-size: 0.9rem;
    line-height: 1.4;
    transition: border-color 180ms ease, background-color 180ms ease;
}

.enquiry-field input {
    min-height: 50px;
    padding: 0 14px;
}

.enquiry-field textarea {
    min-height: 128px;
    padding: 13px 14px;
    resize: vertical;
}

.enquiry-field input::placeholder,
.enquiry-field textarea::placeholder {
    color: var(--faint-text);
}

.enquiry-field input:focus,
.enquiry-field textarea:focus {
    border-color: var(--focus);
    background: rgba(3, 7, 11, 0.34);
    outline: 0;
}

.enquiry-form__trap {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.enquiry-consent {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-top: 25px;
    color: var(--muted-text);
    cursor: pointer;
    font-size: 0.76rem;
    line-height: 1.45;
}

.enquiry-consent input {
    width: 17px;
    height: 17px;
    flex: 0 0 auto;
    margin: 1px 0 0;
    accent-color: var(--copper);
}

.enquiry-form__footer {
    display: flex;
    align-items: center;
    gap: 22px;
    margin-top: 28px;
}

.enquiry-form__footer .button {
    min-width: 220px;
}

.enquiry-form__note {
    max-width: 260px;
    margin: 0;
    color: var(--faint-text);
    font-size: 0.72rem;
    line-height: 1.45;
}

.enquiry-form__status {
    min-height: 22px;
    margin: 20px 0 0;
    color: var(--muted-text);
    font-size: 0.82rem;
    line-height: 1.45;
}

.enquiry-form__status:empty {
    display: none;
}

.enquiry-form__status.is-success {
    color: var(--earth-blue);
}

.enquiry-form__status.is-error {
    color: #E2A18A;
}

body.modal-open {
    overflow: hidden;
}

.site-footer {
    background: var(--night-surface);
}

.site-footer__main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    padding-top: 72px;
    padding-bottom: 72px;
}

.site-footer__identity p {
    max-width: 290px;
    margin: 28px 0 0;
    color: var(--muted-text);
    font-size: 0.9rem;
}

.site-footer__sources .eyebrow {
    margin-top: 0;
    margin-bottom: 15px;
}

.source-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.source-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    min-height: 54px;
    border-top: 1px solid var(--hairline-dark);
    color: var(--muted-text);
    font-size: 0.7rem;
    letter-spacing: 0.03em;
}

.source-list a:hover,
.source-list a:focus-visible {
    color: var(--primary-text);
}

.source-list svg {
    width: 15px;
    height: 15px;
}

.site-footer__bottom {
    display: flex;
    flex-wrap: wrap;
    gap: 13px 26px;
    padding-top: 18px;
    padding-bottom: 22px;
    border-top: 1px solid var(--hairline-dark);
    color: var(--faint-text);
    font-size: 0.64rem;
    font-weight: 400;
    letter-spacing: 0.04em;
    text-transform: none;
}

.site-footer__bottom p {
    margin: 0;
}

.site-footer__bottom a {
    color: var(--muted-text);
}

@keyframes asteroid-drift {
    0% { transform: scale(1.015) translate3d(0, 0, 0); }
    100% { transform: scale(1.03) translate3d(-8px, 5px, 0); }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
}

@media (max-width: 1100px) {
    .desktop-nav {
        gap: 24px;
        padding-left: 2%;
    }

    .mission-list__row {
        grid-template-columns: 36px minmax(150px, 1fr) 100px minmax(130px, auto);
        gap: 16px;
    }
}

@media (max-width: 899px) {
    .desktop-nav,
    .header-cta {
        display: none;
    }

    .site-header__inner {
        justify-content: space-between;
        min-height: 72px;
    }

    .menu-toggle {
        display: inline-flex;
        width: 48px;
        height: 48px;
        align-items: center;
        justify-content: center;
        padding: 0;
        border: 0;
        background: transparent;
        color: var(--primary-text);
        cursor: pointer;
    }

    .menu-toggle__icon {
        width: 32px;
        height: 32px;
        fill: none;
        stroke: currentColor;
        stroke-linecap: square;
        stroke-width: 1.5;
    }

    .menu-toggle__icon--close {
        display: none;
    }

    .menu-toggle[aria-expanded="true"] .menu-toggle__icon--menu {
        display: none;
    }

    .menu-toggle[aria-expanded="true"] .menu-toggle__icon--close {
        display: block;
    }

    .mobile-menu {
        display: block;
        border-top: 1px solid var(--hairline-dark);
        background: rgba(3, 7, 11, 0.98);
    }

    .mobile-menu__nav {
        display: flex;
        min-height: calc(100svh - 73px);
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        gap: 24px;
        padding-top: 45px;
        padding-bottom: 45px;
    }

    .mobile-menu__nav a {
        font-family: var(--display);
        font-size: clamp(2.2rem, 8vw, 3.7rem);
        line-height: 0.95;
    }

    .mobile-menu__nav a:hover,
    .mobile-menu__nav a:focus-visible {
        color: var(--copper-hover);
    }

    .mobile-menu__nav .mobile-menu__cta {
        margin-top: 19px;
        padding: 13px 0;
        border-bottom: 1px solid var(--copper);
        color: var(--copper-hover);
        font-family: var(--body);
        font-size: 0.84rem;
        letter-spacing: 0.08em;
    }

    .mobile-menu__cta svg {
        width: 18px;
        height: 18px;
    }
}

@media (max-width: 699px) {
    .page-gutter {
        padding-inline: 24px;
    }

    .site-header__inner {
        min-height: 72px;
    }

    .brand {
        font-size: 0.82rem;
        letter-spacing: 0.26em;
    }

    .hero {
        min-height: max(100svh, 780px);
        height: auto;
    }

    .hero__media img {
        object-position: 64% center;
        animation-duration: 30s;
    }

    .hero__content {
        min-height: max(100svh, 780px);
        align-items: stretch;
        padding-top: 150px;
        padding-bottom: 52px;
        text-align: left;
    }

    .hero__title {
        max-width: 9ch;
        font-size: clamp(3.3rem, 15vw, 5.2rem);
        line-height: 0.88;
    }

    .countdown {
        margin-top: 45px;
    }

    .countdown__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .countdown__unit {
        min-height: 96px;
        justify-content: center;
        border-left: 0;
    }

    .countdown__unit:nth-child(even) {
        border-left: 1px solid var(--hairline-light);
    }

    .countdown__unit:nth-child(n + 3) {
        border-top: 1px solid var(--hairline-light);
    }

    .countdown__value {
        font-size: clamp(4.6rem, 27vw, 7.5rem);
        letter-spacing: 0.02em;
        line-height: 0.82;
    }

    .countdown__unit dt {
        margin-top: 14px;
        font-size: 0.68rem;
        letter-spacing: 0.23em;
    }

    .hero__date {
        margin-top: 29px;
        text-align: center;
        font-size: 0.84rem;
        letter-spacing: 0.2em;
    }

    .hero__date-desktop {
        display: none;
    }

    .hero__date-mobile {
        display: inline;
    }

    .local-time {
        text-align: center;
    }

    .hero__safety {
        margin-top: 22px;
        text-align: center;
        font-size: 1.05rem;
    }

    .hero__actions {
        flex-direction: column;
        align-items: stretch;
        gap: 25px;
        margin-top: 42px;
        text-align: center;
    }

    .button {
        min-width: 0;
        min-height: 60px;
        padding: 14px 19px;
        font-size: 0.93rem;
    }

    .button--secondary {
        min-height: 42px;
        border: 0;
        border-bottom: 1px solid var(--copper);
        border-radius: 0;
        align-self: center;
        padding: 4px 0 8px;
    }

    .section__inner {
        padding-top: 92px;
        padding-bottom: 92px;
    }

    .encounter-intro,
    .why-section__inner,
    .missions-section__inner,
    .connect-section__inner,
    .updates-section__inner {
        display: block;
    }

    .encounter-intro h2,
    .why-section h2,
    .missions-intro h2,
    .connect-section h2,
    .updates-section h2 {
        font-size: clamp(2.85rem, 13vw, 4.5rem);
        line-height: 0.91;
    }

    .encounter-intro p,
    .why-section__copy > p,
    .missions-intro > p,
    .updates-section__copy > p {
        margin-top: 32px;
        font-size: 1rem;
    }

    .fact-rail {
        display: block;
        margin-top: 65px;
    }

    .fact-rail__item,
    .fact-rail__item + .fact-rail__item {
        display: grid;
        grid-template-columns: 0.82fr 1.18fr;
        gap: 20px;
        min-height: 0;
        padding: 22px 0;
        border-left: 0;
    }

    .fact-rail__item p {
        margin: 0;
        font-size: 0.95rem;
    }

    .source-note {
        display: block;
        line-height: 2;
    }

    .source-note span,
    .source-note a {
        display: block;
    }

    .why-section__copy {
        padding-left: 20px;
    }

    .orbit-figure {
        min-height: 340px;
        margin-top: 64px;
    }

    .orbit-figure svg {
        min-height: 340px;
    }

    .missions-intro > p,
    .updates-section__copy > p {
        max-width: 500px;
    }

    .mission-list {
        margin-top: 59px;
    }

    .mission-list__row {
        grid-template-columns: 32px 1fr auto;
        gap: 12px;
        min-height: 105px;
    }

    .mission-list__number {
        align-self: start;
        padding-top: 4px;
    }

    .mission-list__name h3 {
        font-size: 1.6rem;
    }

    .mission-list__row p {
        font-size: 0.58rem;
    }

    .confidence-label {
        align-self: start;
        padding-top: 5px;
        font-size: 0.58rem;
    }

    .mission-list__link {
        grid-column: 2 / -1;
        justify-content: flex-start;
        margin-top: -18px;
        padding-bottom: 17px;
        font-size: 0.7rem;
    }

    .connect-section__copy {
        padding-left: 20px;
    }

    .connect-section__copy > p {
        margin-top: 32px;
        font-size: 1rem;
    }

    .connect-options {
        margin-top: 58px;
    }

    .connect-option {
        min-height: 96px;
        gap: 18px;
    }

    .connect-option strong {
        font-size: clamp(1.55rem, 7.5vw, 2.2rem);
    }

    .connect-option small {
        font-size: 0.63rem;
        letter-spacing: 0.1em;
    }

    .updates-section__copy > p {
        margin-bottom: 48px;
    }

    .signup-panel {
        min-height: 260px;
        padding: 27px 0 0;
    }

    .enquiry-lightbox {
        place-items: start center;
        padding: 12px;
    }

    .enquiry-modal {
        max-height: calc(100svh - 24px);
        padding: 27px 20px 30px;
    }

    .enquiry-modal__close {
        margin: -9px -5px 0 0;
    }

    .enquiry-modal__heading {
        margin-top: 29px;
    }

    .enquiry-modal__heading h2 {
        font-size: clamp(2.55rem, 12.5vw, 4rem);
    }

    .enquiry-modal__heading p {
        margin-top: 20px;
        font-size: 0.92rem;
    }

    .enquiry-form {
        margin-top: 31px;
    }

    .enquiry-form__grid {
        display: block;
    }

    .enquiry-field + .enquiry-field {
        margin-top: 21px;
    }

    .enquiry-form__footer {
        display: block;
    }

    .enquiry-form__footer .button {
        width: 100%;
    }

    .enquiry-form__note {
        max-width: none;
        margin-top: 16px;
    }

    .site-footer__main {
        display: block;
        padding-top: 61px;
        padding-bottom: 60px;
    }

    .site-footer__sources {
        margin-top: 52px;
    }

    .source-list {
        display: block;
    }

    .source-list li + li {
        margin-top: 10px;
    }

    .site-footer__bottom {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 360px) {
    .page-gutter {
        padding-inline: 20px;
    }

    .hero__content {
        padding-top: 138px;
    }

    .hero__title {
        font-size: clamp(3rem, 15.2vw, 4.6rem);
    }

    .countdown__unit {
        min-height: 90px;
    }

    .countdown__value {
        font-size: clamp(4.1rem, 26vw, 6.5rem);
    }

    .hero__date {
        font-size: 0.73rem;
        letter-spacing: 0.12em;
    }
}