:root {
    --colour-dark: #121a22;
    --colour-dark-2: #1c2934;
    --colour-teal: #19a7a4;
    --colour-teal-dark: #087d7c;
    --colour-text: #26313a;
    --colour-muted: #64707a;
    --colour-line: #dbe1e3;
    --colour-light: #f4f7f6;
    --max-width: 1170px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
    color: var(--colour-text);
    font-family: Inter, Avenir Next, Avenir, Helvetica Neue, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    background: #ffffff;
}

main {
    flex: 1 0 auto;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

a {
    color: inherit;
}

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

.skip-link:focus {
    z-index: 1000;
    top: 12px;
    left: 12px;
    width: auto;
    height: auto;
    padding: 10px 14px;
    clip: auto;
    color: #ffffff;
    background: var(--colour-teal);
}

.site-header {
    position: sticky;
    z-index: 20;
    top: 0;
    background: rgba(18, 26, 34, 0.98);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.09);
    box-shadow: 0 8px 18px rgba(8, 10, 13, 0.22);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: min(100% - 40px, var(--max-width));
    min-height: 88px;
    margin: 0 auto;
}

.brand img {
    width: 169px;
    max-height: 80px;
}

.brand {
    display: inline-flex;
    align-items: center;
    min-width: 226px;
    padding: 16px 28px 16px 0;
}

.primary-nav {
    display: flex;
    align-items: center;
    gap: clamp(4px, 1.2vw, 18px);
}

.primary-nav a {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-height: 88px;
    padding: 0 clamp(8px, 1.1vw, 17px);
    color: #c5c8cd;
    font-size: 12px;
    font-weight: 700;
    text-decoration: none;
    text-transform: uppercase;
    transition: color 180ms ease, background-color 180ms ease;
}

.primary-nav a::after {
    position: absolute;
    right: 16px;
    bottom: 17px;
    left: 16px;
    height: 2px;
    background: transparent;
    content: "";
    transition: background-color 180ms ease;
}

.primary-nav a:hover,
.primary-nav a:focus,
.primary-nav a[aria-current='page'] {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.035);
}

.primary-nav a:hover::after,
.primary-nav a:focus::after,
.primary-nav a[aria-current='page']::after {
    background: var(--colour-teal);
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
    display: block;
    width: 30px;
    height: 2px;
    background: #ffffff;
    content: "";
    transition: transform 180ms ease, opacity 180ms ease;
}

.nav-toggle-bars {
    position: relative;
    margin: 0 auto;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
    position: absolute;
    left: 0;
}

.nav-toggle-bars::before {
    top: -9px;
}

.nav-toggle-bars::after {
    top: 9px;
}

.nav-open .nav-toggle-bars {
    background: transparent;
}

.nav-open .nav-toggle-bars::before {
    transform: translateY(9px) rotate(45deg);
}

.nav-open .nav-toggle-bars::after {
    transform: translateY(-9px) rotate(-45deg);
}

.hero {
    position: relative;
    display: grid;
    min-height: clamp(520px, 82vh, 760px);
    overflow: hidden;
    color: #ffffff;
    background: var(--colour-dark);
}

.page-home .hero {
    min-height: calc(100svh - 88px);
}

.hero-media {
    position: absolute;
    inset: 0;
}

.hero-media::after {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(36, 39, 45, 0.92) 0%, rgba(36, 39, 45, 0.58) 42%, rgba(36, 39, 45, 0.16) 100%);
    content: "";
}

.page-home .hero-media::after {
    display: block;
    background: linear-gradient(90deg, rgba(8, 18, 27, 0.88) 0%, rgba(8, 18, 27, 0.6) 43%, rgba(8, 18, 27, 0.16) 100%);
}

.hero-media img,
.hero-media video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-content {
    position: relative;
    align-self: center;
    width: min(100% - 40px, var(--max-width));
    margin: 0 auto;
    padding: 96px 0 120px;
}

.home-hero .hero-content {
    padding: clamp(80px, 11vw, 150px) 0;
}

.home-hero.hero h1 {
    text-transform: none;
}

.hero h1 {
    max-width: 760px;
    margin: 0;
    font-size: clamp(52px, 7vw, 94px);
    font-weight: 700;
    letter-spacing: -0.055em;
    line-height: 0.98;
    text-transform: capitalize;
}

.hero p:not(.eyebrow) {
    max-width: 660px;
    margin: 26px 0 0;
    color: rgba(255, 255, 255, 0.88);
    font-size: clamp(18px, 2.2vw, 24px);
    line-height: 1.45;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
    align-items: center;
    margin-top: 36px;
}

.button.button-light {
    color: var(--colour-dark);
    background: #ffffff;
}

.button.button-light:hover,
.button.button-light:focus {
    color: #ffffff;
    background: var(--colour-teal);
}

.hero-link {
    display: inline-flex;
    gap: 12px;
    align-items: center;
    color: #ffffff;
    font-weight: 700;
    text-decoration: none;
}

.hero-link span {
    color: var(--colour-teal);
    font-size: 24px;
    transition: transform 180ms ease;
}

.hero-link:hover span,
.hero-link:focus span {
    transform: translateX(5px);
}

.hero-scroll {
    position: absolute;
    z-index: 1;
    right: max(20px, calc((100% - var(--max-width)) / 2));
    bottom: 28px;
    display: inline-flex;
    gap: 13px;
    align-items: center;
    color: rgba(255, 255, 255, 0.86);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-decoration: none;
    text-transform: uppercase;
}

.hero-scroll span {
    color: var(--colour-teal);
    font-size: 19px;
}

.eyebrow {
    margin: 0 0 18px;
    color: var(--colour-teal);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
}

.section {
    width: min(100% - 40px, 1216px);
    margin: 0 auto;
    padding: clamp(70px, 9vw, 130px) 0;
}

.section-heading h2,
.intro-heading h2,
.feature-copy h2,
.services-heading h2 {
    margin: 0;
    color: var(--colour-dark);
    font-size: clamp(34px, 5vw, 56px);
    line-height: 1.08;
    text-transform: capitalize;
}

.intro-heading {
    display: grid;
    grid-template-columns: minmax(300px, 1fr) minmax(280px, 0.55fr);
    column-gap: clamp(42px, 8vw, 140px);
    margin-bottom: clamp(48px, 7vw, 88px);
}

.intro-heading .eyebrow {
    grid-column: 1 / -1;
}

.intro-heading h2 {
    max-width: 620px;
}

.intro-heading > p:not(.eyebrow) {
    align-self: end;
    margin: 0;
    color: var(--colour-muted);
    font-size: 20px;
    line-height: 1.55;
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr minmax(240px, 360px) 1fr;
    gap: clamp(28px, 5vw, 70px);
    align-items: start;
}

.intro-grid p {
    margin: 0 0 20px;
}

.intro-grid figure {
    margin: 0;
}

.intro-grid figure img {
    width: 100%;
    aspect-ratio: 4 / 5;
    object-fit: cover;
    border-radius: 2px;
}

.tower-facts {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    margin: clamp(56px, 8vw, 95px) 0 0;
    border-top: 1px solid var(--colour-line);
    border-bottom: 1px solid var(--colour-line);
}

.tower-facts div {
    padding: 25px 30px 27px;
    border-right: 1px solid var(--colour-line);
}

.tower-facts div:first-child {
    padding-left: 0;
}

.tower-facts div:last-child {
    border-right: 0;
}

.tower-facts dt {
    color: var(--colour-dark);
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 700;
    letter-spacing: -0.055em;
    line-height: 1;
}

.tower-facts dd {
    margin: 8px 0 0;
    color: var(--colour-muted);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
}

.feature-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 560px;
    background: var(--colour-light);
}

.feature-split-dark {
    color: #ffffff;
    background: var(--colour-dark-2);
}

.feature-image {
    min-height: 460px;
    overflow: hidden;
}

.feature-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 400ms ease;
}

.feature-split:hover .feature-image img {
    transform: scale(1.035);
}

.feature-copy {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: clamp(56px, 10vw, 140px) clamp(28px, 8vw, 135px);
}

.feature-split-dark .feature-copy h2 {
    color: #ffffff;
}

.feature-copy p:not(.eyebrow) {
    margin: 26px 0 0;
}

.text-link {
    display: inline-flex;
    align-self: flex-start;
    margin-top: 28px;
    border-bottom: 2px solid currentColor;
    color: var(--colour-teal);
    font-weight: 700;
    text-decoration: none;
}

.services {
    padding-top: clamp(80px, 11vw, 150px);
}

.services-heading {
    display: grid;
    grid-template-columns: minmax(220px, 0.45fr) 1fr;
    gap: clamp(28px, 5vw, 64px);
    align-items: center;
    margin-bottom: 54px;
}

.services-heading h2 {
    margin-top: 4px;
}

.services-heading p {
    margin: 0;
    color: var(--colour-muted);
    font-size: 20px;
}

.services-heading > div {
    padding-right: 28px;
    border-right: 3px solid var(--colour-teal);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    position: relative;
    min-height: 350px;
    overflow: hidden;
    color: #ffffff;
    background: var(--colour-dark);
    text-decoration: none;
}

.service-card img {
    width: 100%;
    height: 100%;
    min-height: 350px;
    object-fit: cover;
    opacity: 0.9;
    transition: transform 300ms ease, opacity 300ms ease;
}

.service-card::after {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(36, 39, 45, 0) 35%, rgba(36, 39, 45, 0.88) 100%);
    content: "";
}

.service-card span {
    position: absolute;
    z-index: 1;
    right: 28px;
    bottom: 28px;
    left: 28px;
    font-size: 25px;
    font-weight: 700;
    line-height: 1.2;
}

.service-card .service-card-number {
    top: 24px;
    right: auto;
    bottom: auto;
    left: 28px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 12px;
    letter-spacing: 0.1em;
}

.service-card:hover img,
.service-card:focus img {
    opacity: 1;
    transform: scale(1.06);
}

.services-hero {
    min-height: clamp(430px, 62vh, 620px);
}

.services-intro {
    display: grid;
    grid-template-columns: minmax(320px, 1fr) minmax(300px, 0.62fr);
    gap: clamp(44px, 10vw, 160px);
    align-items: start;
}

.services-intro h2,
.services-list-heading h2,
.services-contact h2 {
    margin: 0;
    color: var(--colour-dark);
    font-size: clamp(36px, 5vw, 60px);
    letter-spacing: -0.045em;
    line-height: 1.04;
}

.services-intro > div:last-child {
    padding-top: 8px;
}

.services-intro > div:last-child p {
    margin: 0 0 20px;
    color: var(--colour-muted);
    font-size: 18px;
}

.service-overview {
    padding-top: clamp(28px, 4vw, 52px);
}

.services-list-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 30px;
    margin-bottom: clamp(38px, 5vw, 62px);
}

.service-overview-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
}

.service-overview-card {
    position: relative;
    display: grid;
    min-height: 480px;
    overflow: hidden;
    color: #ffffff;
    background: var(--colour-dark);
    text-decoration: none;
}

.service-overview-card::after {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(7, 16, 24, 0.08) 17%, rgba(7, 16, 24, 0.9) 100%);
    content: "";
}

.service-overview-card img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.88;
    transition: transform 450ms ease, opacity 450ms ease;
}

.service-overview-card > div {
    position: relative;
    z-index: 1;
    align-self: end;
    padding: clamp(28px, 4vw, 44px);
}

.service-overview-number {
    display: block;
    margin-bottom: 54px;
    color: var(--colour-teal);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
}

.service-overview-card h3 {
    max-width: 440px;
    margin: 0;
    font-size: clamp(28px, 3vw, 38px);
    letter-spacing: -0.04em;
    line-height: 1.05;
}

.service-overview-card p {
    max-width: 430px;
    margin: 15px 0 0;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.5;
}

.service-overview-link {
    display: inline-flex;
    gap: 10px;
    align-items: center;
    margin-top: 24px;
    border-bottom: 1px solid var(--colour-teal);
    padding-bottom: 3px;
    font-size: 14px;
    font-weight: 700;
}

.service-overview-link b {
    color: var(--colour-teal);
    font-size: 20px;
    font-weight: 400;
    transition: transform 180ms ease;
}

.service-overview-card:hover img,
.service-overview-card:focus img {
    opacity: 1;
    transform: scale(1.045);
}

.service-overview-card:hover .service-overview-link b,
.service-overview-card:focus .service-overview-link b {
    transform: translateX(5px);
}

.services-contact {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
    margin-top: clamp(38px, 7vw, 100px);
    padding: clamp(54px, 8vw, 108px) max(20px, calc((100% - var(--max-width)) / 2));
    color: #ffffff;
    background: var(--colour-dark);
}

.services-contact > div {
    max-width: 700px;
}

.services-contact h2 {
    color: #ffffff;
}

.services-contact p:not(.eyebrow) {
    max-width: 600px;
    margin: 20px 0 0;
    color: rgba(255, 255, 255, 0.72);
    font-size: 18px;
}

.services-contact .button {
    flex: 0 0 auto;
}

.site-footer {
    color: #bec2c7;
    background: #191c21;
    border-top: 4px solid var(--colour-teal);
}

.simple-page {
    display: flex;
    align-items: center;
    min-height: 62vh;
    width: min(100% - 40px, var(--max-width));
    margin: 0 auto;
    padding: clamp(80px, 12vw, 150px) 0;
}

.simple-page div {
    max-width: 760px;
}

.simple-page h1 {
    margin: 0;
    color: var(--colour-dark);
    font-size: clamp(44px, 7vw, 82px);
    line-height: 1;
}

.simple-page p:not(.eyebrow) {
    margin: 28px 0 0;
    color: var(--colour-muted);
    font-size: 20px;
}

.page-hero {
    position: relative;
    display: flex;
    align-items: center;
    min-height: clamp(360px, 55vh, 560px);
    overflow: hidden;
    color: #ffffff;
    background: var(--colour-dark);
}

.page-hero::before {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(36, 39, 45, 0.88), rgba(36, 39, 45, 0.48));
    content: "";
}

.page-hero-image {
    background-image: var(--hero-image);
    background-position: center;
    background-size: cover;
}

.page-hero-dark {
    background: linear-gradient(135deg, var(--colour-dark), var(--colour-dark-2));
}

.page-hero > div {
    position: relative;
    width: min(100% - 40px, var(--max-width));
    margin: 0 auto;
    padding: 80px 0;
}

.page-hero h1 {
    max-width: 860px;
    margin: 0;
    font-size: clamp(46px, 7vw, 86px);
    line-height: 1;
}

.page-hero p:not(.eyebrow) {
    max-width: 680px;
    margin: 24px 0 0;
    color: rgba(255, 255, 255, 0.88);
    font-size: clamp(18px, 2.2vw, 24px);
    line-height: 1.45;
}

.content-section {
    width: min(100% - 40px, 1216px);
    margin: 0 auto;
    padding: clamp(64px, 8vw, 110px) 0;
}

.two-column {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.9fr);
    gap: clamp(34px, 6vw, 78px);
    align-items: center;
}

.two-column-reverse {
    grid-template-columns: minmax(300px, 0.9fr) minmax(0, 1fr);
}

.prose {
    max-width: 860px;
}

.prose h2,
.timeline-section h2,
.faq-item h2,
.story-grid h2 {
    margin: 0 0 18px;
    color: var(--colour-dark);
    font-size: clamp(28px, 4vw, 44px);
    line-height: 1.12;
}

.prose p,
.faq-item p,
.story-grid p,
.timeline-list {
    margin: 0 0 18px;
    color: var(--colour-muted);
    font-size: 18px;
}

.media-panel {
    margin: 0;
}

.media-panel img,
.story-grid img,
.gallery-grid img,
.image-grid img {
    width: 100%;
    border-radius: 4px;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.faq-list {
    display: grid;
    gap: 22px;
}

.faq-item {
    padding: 28px 0;
    border-bottom: 1px solid var(--colour-line);
}

.faq-item:first-child {
    border-top: 1px solid var(--colour-line);
}

.faq-intro {
    display: grid;
    grid-template-columns: minmax(300px, 1fr) minmax(260px, 0.56fr);
    gap: clamp(38px, 8vw, 130px);
    align-items: end;
    padding-bottom: clamp(42px, 6vw, 74px);
}

.faq-intro h2,
.faq-group > h2,
.faq-contact h2 {
    margin: 0;
    color: var(--colour-dark);
    font-size: clamp(34px, 5vw, 58px);
    line-height: 1.08;
}

.faq-intro > p:not(.eyebrow) {
    margin: 0;
    color: var(--colour-muted);
    font-size: 19px;
    line-height: 1.55;
}

.faq-groups {
    display: grid;
    gap: clamp(56px, 8vw, 100px);
    padding-top: 0;
}

.faq-group > h2 {
    margin-bottom: 22px;
    font-size: clamp(27px, 3.4vw, 40px);
}

.faq-accordion {
    border-top: 1px solid var(--colour-line);
}

.faq-item {
    margin: 0;
    padding: 0;
    border-bottom: 1px solid var(--colour-line);
}

.faq-item:first-child {
    border-top: 0;
}

.faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 25px 0;
    color: var(--colour-dark);
    font-size: clamp(19px, 2.2vw, 24px);
    font-weight: 700;
    line-height: 1.3;
    cursor: pointer;
    list-style: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-marker {
    position: relative;
    flex: 0 0 34px;
    width: 34px;
    height: 34px;
    border: 1px solid var(--colour-line);
    border-radius: 50%;
}

.faq-marker::before,
.faq-marker::after {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 12px;
    height: 2px;
    background: var(--colour-teal-dark);
    content: "";
    transform: translate(-50%, -50%);
    transition: transform 180ms ease;
}

.faq-marker::after {
    transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item[open] .faq-marker {
    border-color: var(--colour-teal);
    background: var(--colour-teal);
}

.faq-item[open] .faq-marker::before,
.faq-item[open] .faq-marker::after {
    background: #ffffff;
}

.faq-item[open] .faq-marker::after {
    transform: translate(-50%, -50%) rotate(0deg);
}

.faq-answer {
    max-width: 820px;
    padding: 0 54px 26px 0;
}

.faq-answer p {
    margin: 0;
    color: var(--colour-muted);
    font-size: 18px;
    line-height: 1.65;
}

.faq-contact {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 32px;
    margin-top: clamp(70px, 10vw, 140px);
    padding: clamp(56px, 8vw, 100px) max(20px, calc((100% - var(--max-width)) / 2));
    color: #ffffff;
    background: var(--colour-dark-2);
}

.faq-contact h2 {
    color: #ffffff;
}

.faq-contact > div > p:not(.eyebrow) {
    max-width: 620px;
    margin: 20px 0 0;
    color: rgba(255, 255, 255, 0.78);
    font-size: 18px;
}

.history-intro,
.history-testing {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.86fr);
    gap: clamp(38px, 7vw, 100px);
    align-items: center;
}

.history-facts {
    padding-top: 0;
}

.history-facts dl {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin: 0;
    border-top: 1px solid var(--colour-line);
    border-bottom: 1px solid var(--colour-line);
}

.history-facts div {
    padding: 26px 30px;
    border-right: 1px solid var(--colour-line);
}

.history-facts div:first-child {
    padding-left: 0;
}

.history-facts div:last-child {
    border-right: 0;
}

.history-facts dt {
    color: var(--colour-dark);
    font-size: clamp(34px, 4.5vw, 54px);
    font-weight: 700;
    line-height: 1;
}

.history-facts dd {
    margin: 9px 0 0;
    color: var(--colour-muted);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
}

.history-timeline {
    padding-top: clamp(52px, 8vw, 110px);
}

.history-timeline-heading {
    max-width: 670px;
    margin-bottom: clamp(38px, 6vw, 68px);
}

.history-timeline-heading h2,
.history-today h2 {
    margin: 0;
    color: var(--colour-dark);
    font-size: clamp(38px, 5vw, 62px);
    line-height: 1.06;
}

.history-milestones {
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--colour-line);
    list-style: none;
}

.history-milestones li {
    display: grid;
    grid-template-columns: minmax(118px, 0.2fr) 1fr;
    gap: clamp(28px, 5vw, 82px);
    padding: 26px 0;
    border-bottom: 1px solid var(--colour-line);
}

.history-milestones time {
    color: var(--colour-teal-dark);
    font-size: clamp(25px, 3vw, 36px);
    font-weight: 700;
    line-height: 1.1;
}

.history-milestones h3 {
    margin: 0;
    color: var(--colour-dark);
    font-size: 22px;
    line-height: 1.25;
}

.history-milestones p {
    max-width: 700px;
    margin: 7px 0 0;
    color: var(--colour-muted);
    font-size: 17px;
}

.history-today {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 1fr;
    min-height: 560px;
    color: #ffffff;
    background: var(--colour-dark-2);
}

.history-today > div {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: clamp(54px, 9vw, 130px);
}

.history-today h2 {
    color: #ffffff;
}

.history-today > div > p:not(.eyebrow) {
    max-width: 560px;
    margin: 20px 0 0;
    color: rgba(255, 255, 255, 0.78);
    font-size: 18px;
}

.history-today img {
    width: 100%;
    height: 100%;
    min-height: 420px;
    object-fit: cover;
}

.video-frame {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    background: var(--colour-dark);
    aspect-ratio: 16 / 9;
}

.video-frame iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.timeline-section {
    border-top: 1px solid var(--colour-line);
    border-bottom: 1px solid var(--colour-line);
}

.timeline-list {
    display: grid;
    gap: 14px;
    padding-left: 24px;
}

.gallery-grid,
.story-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.gallery-grid figure {
    margin: 0;
}

.gallery-grid img {
    aspect-ratio: 3 / 4;
    object-fit: cover;
}

.gallery-grid figcaption {
    margin-top: 10px;
    color: var(--colour-muted);
    font-size: 14px;
}

.story-grid article {
    display: grid;
    gap: 14px;
}

.story-grid img {
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.contact-heading {
    max-width: 820px;
    margin-bottom: 54px;
}

.contact-heading h1 {
    margin: 0;
    color: var(--colour-dark);
    font-size: clamp(44px, 7vw, 82px);
    line-height: 1;
}

.contact-heading p:not(.eyebrow) {
    margin: 24px 0 0;
    color: var(--colour-muted);
    font-size: 20px;
}

.contact-hero {
    color: #ffffff;
    background: var(--colour-dark-2);
}

.contact-hero > div {
    width: min(100% - 40px, var(--max-width));
    margin: 0 auto;
    padding: clamp(74px, 11vw, 140px) 0;
}

.contact-hero h1 {
    max-width: 780px;
    margin: 0;
    font-size: clamp(48px, 7vw, 84px);
    line-height: 1;
}

.contact-hero > div > p:not(.eyebrow) {
    max-width: 670px;
    margin: 25px 0 0;
    color: rgba(255, 255, 255, 0.8);
    font-size: clamp(18px, 2.2vw, 23px);
    line-height: 1.5;
}

.contact-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 18px 32px;
    margin-top: 34px;
}

.contact-hero-actions a {
    border-bottom: 2px solid var(--colour-teal);
    padding-bottom: 4px;
    color: #ffffff;
    font-weight: 700;
    text-decoration: none;
}

.contact-hero-actions a:hover,
.contact-hero-actions a:focus {
    color: var(--colour-teal);
}

.contact-layout {
    display: grid;
    grid-template-columns: minmax(240px, 0.45fr) 1fr;
    gap: clamp(32px, 6vw, 80px);
    align-items: start;
}

.contact-details {
    padding-top: 10px;
    border-top: 3px solid var(--colour-line);
}

.contact-details h2 {
    margin: 0 0 22px;
    color: var(--colour-dark);
    font-size: 26px;
    line-height: 1.2;
}

.contact-details address {
    color: var(--colour-muted);
    font-style: normal;
}

.contact-layout-updated {
    grid-template-columns: minmax(290px, 0.7fr) minmax(0, 1.3fr);
}

.contact-details-updated {
    display: grid;
    gap: 22px;
    padding-top: 0;
    border-top: 0;
}

.contact-details-updated > img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.contact-details-updated .eyebrow {
    margin-bottom: 10px;
}

.contact-details-updated h2 {
    margin: 0;
    font-size: clamp(28px, 3vw, 38px);
}

.contact-details-updated address {
    padding: 20px 0;
    border-top: 1px solid var(--colour-line);
    border-bottom: 1px solid var(--colour-line);
    color: var(--colour-text);
    font-size: 18px;
    line-height: 1.65;
}

.contact-facts {
    display: grid;
    gap: 18px;
    margin: 0;
}

.contact-facts div {
    display: grid;
    gap: 3px;
}

.contact-facts dt {
    color: var(--colour-muted);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.contact-facts dd {
    margin: 0;
    color: var(--colour-dark);
    font-size: 18px;
    font-weight: 700;
}

.contact-facts a {
    text-decoration-color: var(--colour-teal);
    text-underline-offset: 4px;
}

.contact-form {
    display: grid;
    gap: 20px;
}

.contact-form-heading {
    margin-bottom: 8px;
}

.contact-form-heading .eyebrow {
    margin-bottom: 10px;
}

.contact-form-heading h2 {
    margin: 0;
    color: var(--colour-dark);
    font-size: clamp(32px, 4vw, 48px);
    line-height: 1.08;
}

.contact-form-heading p:not(.eyebrow) {
    max-width: 620px;
    margin: 13px 0 0;
    color: var(--colour-muted);
}

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

.contact-form label {
    display: grid;
    gap: 8px;
    color: var(--colour-dark);
    font-weight: 700;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    border: 1px solid var(--colour-line);
    border-radius: 4px;
    padding: 13px 14px;
    color: var(--colour-text);
    font: inherit;
    background: #ffffff;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--colour-teal);
    outline: 2px solid rgba(43, 160, 163, 0.18);
}

.form-honeypot {
    position: absolute;
    left: -9999px;
}

.form-alert {
    border-radius: 4px;
    padding: 16px 18px;
}

.form-alert p,
.form-alert ul {
    margin: 0;
}

.form-alert ul {
    padding-left: 20px;
}

.form-alert-success {
    color: #174d38;
    background: #e7f6ee;
}

.form-alert-error {
    color: #6f2626;
    background: #fdecec;
}

.turnstile-note {
    margin: 0;
    color: var(--colour-muted);
    font-size: 14px;
}

.button {
    justify-self: start;
    border: 0;
    border-radius: 4px;
    padding: 13px 22px;
    color: #ffffff;
    font: inherit;
    font-weight: 700;
    background: var(--colour-teal);
    cursor: pointer;
}

.button:hover,
.button:focus {
    background: var(--colour-dark);
}

.footer-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: min(100% - 40px, var(--max-width));
    margin: 0 auto;
    padding: 42px 0 34px;
}

.footer-brand {
    display: inline-flex;
    align-items: center;
}

.footer-brand img {
    width: 169px;
    height: auto;
}

.footer-social {
    display: flex;
    align-items: center;
    gap: 28px;
}

.footer-social a {
    display: grid;
    width: 36px;
    height: 36px;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.22);
    color: #eef0f2;
    text-decoration: none;
    transition: border-color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.footer-social img {
    width: 18px;
    height: 18px;
    filter: invert(1);
}

.footer-social a:hover,
.footer-social a:focus {
    border-color: var(--colour-teal);
    background: var(--colour-teal);
    transform: translateY(-2px);
}

.footer-bottom {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    gap: 30px;
    width: min(100% - 40px, var(--max-width));
    margin: 0 auto;
    padding: 28px 0 34px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    color: #9fa4aa;
    font-size: 13px;
}

.footer-bottom p {
    margin: 0 0 8px;
}

.footer-bottom address {
    color: #ffffff;
    font-style: normal;
    text-align: right;
}

.footer-bottom a {
    color: #ffffff;
    text-decoration: none;
}

.footer-privacy-control {
    border: 0;
    padding: 0;
    color: #ffffff;
    font: inherit;
    background: transparent;
    cursor: pointer;
}

.footer-privacy-control:hover,
.footer-privacy-control:focus {
    color: var(--colour-teal);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.cookie-banner {
    position: fixed;
    z-index: 100;
    right: 20px;
    bottom: 20px;
    width: min(440px, calc(100% - 40px));
    padding: 24px;
    border: 2px solid #e2b35e;
    border-radius: 4px;
    color: #ffffff;
    background: var(--colour-dark);
    box-shadow: 0 18px 46px rgba(0, 0, 0, 0.28);
}

.cookie-banner h2 {
    margin: 0;
    font-size: 22px;
    line-height: 1.2;
}

.cookie-banner p {
    margin: 10px 0 18px;
    color: rgba(255, 255, 255, 0.78);
    font-size: 14px;
    line-height: 1.55;
}

.cookie-banner > a {
    color: #ffffff;
    font-size: 13px;
    text-underline-offset: 3px;
}

.cookie-banner-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 16px;
}

.cookie-button {
    min-height: 46px;
    border: 1px solid #087443;
    border-radius: 4px;
    padding: 11px 16px;
    color: #ffffff;
    font: inherit;
    font-size: 14px;
    font-weight: 700;
    background: #087443;
    cursor: pointer;
}

.cookie-button:hover,
.cookie-button:focus {
    border-color: #ffffff;
    background: #055b35;
}

.cookie-button-secondary {
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.5);
    background: transparent;
}

.cookie-button-secondary:hover,
.cookie-button-secondary:focus {
    background: rgba(255, 255, 255, 0.1);
}

@media (max-width: 900px) {
    .header-inner {
        min-height: 82px;
    }

    .page-home .hero {
        min-height: calc(100svh - 82px);
    }

    .nav-toggle {
        display: block;
    }

    .primary-nav {
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 10px 20px 20px;
        background: #242830;
    }

    .nav-open .primary-nav {
        display: flex;
    }

    .primary-nav a {
        min-height: 48px;
        padding: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .primary-nav a::after {
        right: auto;
        bottom: 7px;
        left: 0;
        width: 34px;
    }

    .intro-grid,
    .intro-heading,
    .faq-intro,
    .history-intro,
    .history-testing,
    .history-today,
    .feature-split,
    .services-heading,
    .two-column,
    .two-column-reverse,
    .card-grid,
    .gallery-grid,
    .story-grid,
    .contact-layout,
    .footer-bottom {
        grid-template-columns: 1fr;
        align-items: start;
    }

    .intro-heading > p:not(.eyebrow) {
        margin-top: 22px;
    }

    .footer-top {
        align-items: flex-start;
        flex-direction: column;
        gap: 26px;
    }

    .footer-brand {
        padding: 0 0 22px;
        border-right: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.14);
    }

    .feature-split .feature-image:last-child {
        order: -1;
    }

    .services-heading > div {
        padding-right: 0;
        padding-bottom: 20px;
        border-right: 0;
        border-bottom: 3px solid var(--colour-teal);
    }

    .service-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom address {
        text-align: left;
    }

    .services-intro,
    .service-overview-grid {
        grid-template-columns: 1fr;
    }

    .services-contact {
        align-items: flex-start;
        flex-direction: column;
    }

    .faq-contact {
        align-items: flex-start;
        flex-direction: column;
    }

    .history-today img {
        min-height: 340px;
    }
}

@media (max-width: 560px) {
    .header-inner,
    .section,
    .hero-content,
    .footer-social,
    .footer-top,
    .footer-bottom {
        width: min(100% - 28px, var(--max-width));
    }

    .brand img {
        width: 145px;
    }

    .brand {
        min-width: auto;
        padding: 14px 20px 14px 0;
    }

    .footer-social {
        gap: 18px;
    }

    .hero {
        min-height: 560px;
    }

    .page-home .hero {
        min-height: calc(100svh - 82px);
    }

    .hero-media::after {
        background: linear-gradient(180deg, rgba(36, 39, 45, 0.72) 0%, rgba(36, 39, 45, 0.94) 100%);
    }

    .page-home .hero-media::after {
        background: linear-gradient(180deg, rgba(8, 18, 27, 0.56) 0%, rgba(8, 18, 27, 0.9) 100%);
    }

    .home-hero .hero-content {
        align-self: end;
        padding: 70px 0 86px;
    }

    .hero h1 {
        font-size: clamp(46px, 14vw, 62px);
    }

    .hero-actions {
        gap: 18px;
        margin-top: 28px;
    }

    .hero-scroll {
        right: 14px;
        bottom: 20px;
        font-size: 9px;
    }

    .tower-facts {
        grid-template-columns: 1fr;
    }

    .history-facts dl {
        grid-template-columns: 1fr;
    }

    .history-facts div,
    .history-facts div:first-child {
        padding: 20px 0;
        border-right: 0;
        border-bottom: 1px solid var(--colour-line);
    }

    .history-facts div:last-child {
        border-bottom: 0;
    }

    .history-milestones li {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .contact-form-grid {
        grid-template-columns: 1fr;
    }

    .contact-hero > div {
        width: min(100% - 28px, var(--max-width));
    }

    .contact-hero-actions {
        align-items: flex-start;
        flex-direction: column;
    }

    .tower-facts div,
    .tower-facts div:first-child {
        display: flex;
        align-items: baseline;
        justify-content: space-between;
        padding: 18px 0;
        border-right: 0;
        border-bottom: 1px solid var(--colour-line);
    }

    .tower-facts div:last-child {
        border-bottom: 0;
    }

    .tower-facts dd {
        margin: 0;
    }

    .feature-copy {
        padding: 46px 20px;
    }

    .feature-image,
    .service-card,
    .service-card img {
        min-height: 320px;
    }
}