:root {
    --navy-950: #071220;
    --navy-900: #0b1b2e;
    --navy-800: #102a45;
    --navy-700: #173d61;
    --blue-600: #126da9;
    --blue-500: #147bc1;
    --blue-400: #3b9ad4;
    --blue-100: #dceefa;
    --red-500: #f23a31;
    --red-600: #db3029;
    --white: #ffffff;
    --off-white: #f5f7f9;
    --grey-100: #e4e9ed;
    --grey-200: #d3dbe1;
    --grey-300: #aeb9c3;
    --grey-600: #566575;
    --grey-800: #263442;
    --text-dark: #162638;
    --text-light: #d4e0e9;
    --container-width: 1180px;
    --header-height: 88px;
    --section-padding: 104px;
    --border-radius: 5px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--text-dark);
    background: var(--white);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
    line-height: 1.65;
    text-rendering: optimizeLegibility;
}

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

button {
    color: inherit;
    font: inherit;
}

:focus-visible {
    outline: 3px solid #68b9ea;
    outline-offset: 4px;
}

#home,
#about,
#focus,
#contact {
    scroll-margin-top: var(--header-height);
}

.container {
    width: min(calc(100% - 48px), var(--container-width));
    margin: 0 auto;
}

.skip-link {
    position: fixed;
    z-index: 2000;
    top: 12px;
    left: 12px;
    padding: 10px 16px;
    color: var(--navy-950);
    background: var(--white);
    border-radius: 3px;
    font-size: 0.9rem;
    font-weight: 750;
    transform: translateY(-160%);
    transition: transform 160ms ease;
}

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

/* Header */

.site-header {
    position: fixed;
    z-index: 1000;
    top: 0;
    right: 0;
    left: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.11);
    background: rgba(7, 18, 32, 0.96);
    backdrop-filter: blur(12px);
}

.header-inner {
    position: relative;
    display: flex;
    min-height: var(--header-height);
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.brand,
.footer-brand {
    --logo-width: 164px;
    --logo-height: 60px;
    --logo-offset: -11px;

    display: block;
    width: var(--logo-width);
    height: var(--logo-height);
    flex: 0 0 auto;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    background: var(--white);
}

.brand-logo {
    display: block;
    width: 100%;
    max-width: none;
    height: auto;
    transform: translateY(var(--logo-offset));
}

.main-navigation {
    display: flex;
    align-items: center;
    gap: 30px;
}

.main-navigation a {
    position: relative;
    padding: 8px 0;
    color: rgba(255, 255, 255, 0.76);
    font-size: 0.88rem;
    font-weight: 650;
    transition: color 160ms ease;
}

.main-navigation a::after {
    position: absolute;
    right: 0;
    bottom: 2px;
    left: 0;
    height: 1px;
    content: "";
    background: var(--blue-400);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 160ms ease;
}

.main-navigation a:hover,
.main-navigation a:focus-visible {
    color: var(--white);
}

.main-navigation a:hover::after,
.main-navigation a:focus-visible::after {
    transform: scaleX(1);
    transform-origin: left;
}

.header-button {
    padding: 10px 17px;
    border: 1px solid var(--red-500);
    border-radius: 3px;
    color: var(--white);
    font-size: 0.84rem;
    font-weight: 720;
    transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.header-button:hover {
    color: var(--white);
    background: var(--red-600);
    border-color: var(--red-600);
}

.menu-toggle {
    display: none;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border: 0;
    color: var(--white);
    background: transparent;
    cursor: pointer;
    font-size: 0.84rem;
    font-weight: 700;
}

.menu-toggle-icon {
    display: flex;
    width: 22px;
    height: 16px;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
}

.menu-toggle-icon span {
    display: block;
    width: 100%;
    height: 1px;
    background: currentColor;
    transition: transform 160ms ease;
}

.menu-toggle[aria-expanded="true"] .menu-toggle-icon span:first-child {
    transform: translateY(3.5px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-icon span:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
}

/* Hero */

.hero {
    position: relative;
    display: flex;
    min-height: 740px;
    align-items: center;
    overflow: hidden;
    padding-top: var(--header-height);
    color: var(--white);
    background: var(--navy-950);
}

.hero::after {
    position: absolute;
    inset: 0 0 0 58%;
    content: "";
    background: linear-gradient(105deg, transparent, rgba(18, 76, 117, 0.22));
    pointer-events: none;
}

.hero-background-grid {
    position: absolute;
    inset: 0;
    opacity: 0.24;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
    background-size: 58px 58px;
    mask-image: linear-gradient(90deg, transparent 4%, black 55%, black 100%);
}

.hero-layout {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(340px, 0.8fr);
    gap: clamp(58px, 7vw, 104px);
    align-items: center;
    padding-top: 84px;
    padding-bottom: 84px;
}

.eyebrow,
.section-label {
    margin: 0 0 19px;
    color: var(--blue-600);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.165em;
    line-height: 1.4;
    text-transform: uppercase;
}

.eyebrow {
    color: var(--blue-400);
}

.hero h1 {
    max-width: 760px;
    margin: 0;
    font-size: clamp(3.25rem, 5.7vw, 5.25rem);
    font-weight: 730;
    letter-spacing: -0.06em;
    line-height: 0.99;
}

.hero h1 span {
    display: block;
    color: var(--blue-400);
}

.hero-text {
    max-width: 650px;
    margin: 29px 0 0;
    color: var(--text-light);
    font-size: 1.08rem;
    line-height: 1.72;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 38px;
}

.button {
    display: inline-flex;
    min-height: 49px;
    align-items: center;
    justify-content: center;
    padding: 0 22px;
    border: 1px solid transparent;
    border-radius: 3px;
    font-size: 0.89rem;
    font-weight: 730;
    transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.button:hover {
    transform: translateY(-1px);
}

.button-primary {
    color: var(--white);
    background: var(--blue-600);
}

.button-primary:hover {
    background: var(--blue-500);
}

.button-secondary {
    border-color: rgba(255, 255, 255, 0.46);
    color: var(--white);
}

.button-secondary:hover {
    border-color: rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.06);
}

/* Infrastructure visual */

.hero-visual {
    position: relative;
    min-height: 438px;
    padding: 23px;
    border: 1px solid rgba(129, 184, 219, 0.2);
    border-radius: 7px;
    background: rgba(13, 33, 53, 0.72);
    box-shadow: 0 26px 60px rgba(0, 0, 0, 0.25);
}

.visual-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
}

.visual-label,
.visual-status {
    color: rgba(255, 255, 255, 0.58);
    font-size: 0.66rem;
    font-weight: 760;
    letter-spacing: 0.15em;
    line-height: 1;
    text-transform: uppercase;
}

.visual-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    letter-spacing: 0.09em;
}

.visual-status::before {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    content: "";
    background: var(--blue-400);
}

.infrastructure-frame {
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    min-height: 285px;
    padding: 26px 20px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    background: rgba(4, 14, 25, 0.68);
}

.frame-scale {
    position: absolute;
    right: 12px;
    left: 12px;
    height: 1px;
    background: repeating-linear-gradient(90deg, rgba(147, 190, 217, 0.3) 0 1px, transparent 1px 18px);
}

.scale-top {
    top: 10px;
}

.scale-bottom {
    bottom: 10px;
}

.server-column {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 12px;
    border: 1px solid rgba(113, 177, 216, 0.17);
    background: rgba(8, 27, 44, 0.74);
}

.server-column span {
    position: relative;
    min-height: 26px;
    border: 1px solid rgba(117, 198, 243, 0.18);
    background: linear-gradient(90deg, rgba(26, 92, 135, 0.18), rgba(84, 183, 236, 0.025));
}

.server-column span::before {
    position: absolute;
    top: 6px;
    bottom: 6px;
    left: 7px;
    width: 1px;
    content: "";
    background: rgba(97, 177, 224, 0.35);
}

.server-column span::after {
    position: absolute;
    top: 50%;
    right: 7px;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    content: "";
    background: var(--blue-400);
    box-shadow: -9px 0 0 rgba(59, 154, 212, 0.35);
    transform: translateY(-50%);
}

.efficiency-line {
    position: absolute;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(75, 169, 224, 0.9), transparent);
    transform-origin: left center;
}

.line-one {
    top: 28%;
    left: 14%;
    width: 66%;
    transform: rotate(9deg);
}

.line-two {
    top: 56%;
    left: 11%;
    width: 75%;
    transform: rotate(-6deg);
}

.line-three {
    top: 76%;
    left: 20%;
    width: 61%;
    transform: rotate(4deg);
}

.efficiency-node {
    position: absolute;
    width: 9px;
    height: 9px;
    border: 2px solid rgba(255, 255, 255, 0.75);
    border-radius: 50%;
    background: var(--blue-600);
    box-shadow: 0 0 0 4px rgba(59, 154, 212, 0.09);
}

.node-one {
    top: 24%;
    left: 31%;
}

.node-two {
    top: 52%;
    left: 65%;
}

.node-three {
    top: 73%;
    left: 43%;
}

.visual-caption {
    display: flex;
    flex-direction: column;
    gap: 1px;
    margin-top: 20px;
}

.visual-caption strong {
    color: var(--white);
    font-size: 0.95rem;
    font-weight: 680;
}

.visual-caption span {
    color: rgba(255, 255, 255, 0.58);
    font-size: 0.79rem;
}

/* Credibility */

.credibility-strip {
    border-bottom: 1px solid var(--grey-100);
    background: var(--off-white);
}

.credibility-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.credibility-grid article {
    min-height: 128px;
    padding: 29px 27px;
    border-right: 1px solid var(--grey-100);
}

.credibility-grid article:first-child {
    border-left: 1px solid var(--grey-100);
}

.credibility-grid strong {
    display: block;
    margin-bottom: 3px;
    color: var(--navy-800);
    font-size: 1.08rem;
    font-weight: 740;
    letter-spacing: -0.015em;
}

.credibility-grid span {
    color: var(--grey-600);
    font-size: 0.85rem;
}

/* General sections */

.section {
    padding: var(--section-padding) 0;
}

.two-column {
    display: grid;
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    gap: clamp(60px, 9vw, 112px);
    align-items: start;
}

.section h2,
.contact-section h2 {
    margin: 0;
    color: var(--navy-900);
    font-size: clamp(2.2rem, 4vw, 3.45rem);
    font-weight: 710;
    letter-spacing: -0.05em;
    line-height: 1.07;
}

.section-copy {
    max-width: 690px;
    color: var(--grey-600);
    font-size: 1.03rem;
}

.section-copy p {
    margin-top: 0;
    margin-bottom: 22px;
}

.section-copy p:last-child {
    margin-bottom: 0;
}

.section-heading {
    max-width: 760px;
    margin-bottom: 50px;
}

.section-heading > p:last-child {
    max-width: 705px;
    margin: 22px 0 0;
    color: var(--grey-600);
    font-size: 1.03rem;
}

.section-heading.compact {
    max-width: 640px;
    margin-bottom: 0;
}

/* Current focus */

.focus-section {
    border-top: 1px solid var(--grey-100);
    border-bottom: 1px solid var(--grey-100);
    background: var(--off-white);
}

.focus-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--grey-200);
    border-bottom: 1px solid var(--grey-200);
}

.focus-card {
    min-height: 254px;
    padding: 31px 30px 34px;
    border-right: 1px solid var(--grey-200);
    background: rgba(255, 255, 255, 0.5);
    transition: background-color 180ms ease;
}

.focus-card:first-child {
    border-left: 1px solid var(--grey-200);
}

.focus-card:hover {
    background: var(--white);
}

.card-number {
    display: inline-block;
    margin-bottom: 40px;
    color: var(--blue-600);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.14em;
}

.focus-card h3,
.partner-note h3,
.principles-grid h3 {
    margin: 0 0 12px;
    color: var(--navy-900);
    font-size: 1.13rem;
    font-weight: 710;
}

.focus-card p,
.partner-note p,
.principles-grid p {
    margin: 0;
    color: var(--grey-600);
    font-size: 0.94rem;
}

.partner-note {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 74px;
    align-items: center;
    margin-top: 28px;
    padding: 34px 38px;
    border-left: 3px solid var(--blue-500);
    background: var(--navy-900);
}

.partner-note .section-label {
    margin-bottom: 7px;
    color: var(--blue-400);
}

.partner-note h3 {
    margin: 0;
    color: var(--white);
}

.partner-note > p {
    color: var(--text-light);
    font-size: 0.94rem;
}

/* Principles */

.principles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 52px;
    margin-top: 46px;
}

.principles-grid article {
    padding-top: 23px;
    border-top: 2px solid var(--blue-600);
}

/* Contact */

.contact-section {
    padding: 86px 0;
    color: var(--white);
    background: var(--navy-900);
}

.contact-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 70px;
}

.contact-inner > div {
    max-width: 730px;
}

.contact-section h2 {
    color: var(--white);
}

.contact-section p:not(.section-label) {
    max-width: 650px;
    margin: 20px 0 0;
    color: var(--text-light);
}

.section-label.light {
    color: var(--blue-400);
}

.button-light {
    flex: 0 0 auto;
    color: var(--navy-900);
    background: var(--white);
}

.button-light:hover {
    background: var(--blue-100);
}

/* Footer */

.site-footer {
    padding: 27px 0;
    color: var(--grey-300);
    background: var(--navy-950);
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.footer-brand {
    --logo-width: 150px;
    --logo-height: 55px;
    --logo-offset: -10px;

    border-color: rgba(255, 255, 255, 0.12);
}

.footer-inner p {
    margin: 0;
    font-size: 0.8rem;
}

/* Responsive */

@media (max-width: 1020px) {
    .hero-layout {
        grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
        gap: 48px;
    }

    .hero h1 {
        font-size: clamp(3rem, 5.4vw, 4.5rem);
    }
}

@media (max-width: 900px) {
    :root {
        --section-padding: 78px;
    }

    .menu-toggle {
        display: inline-flex;
        margin-left: auto;
    }

    .main-navigation {
        position: absolute;
        top: calc(100% + 1px);
        right: -24px;
        left: -24px;
        display: none;
        align-items: stretch;
        flex-direction: column;
        gap: 0;
        padding: 12px 24px 20px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        background: var(--navy-950);
        box-shadow: 0 18px 30px rgba(0, 0, 0, 0.18);
    }

    .main-navigation[data-open="true"] {
        display: flex;
    }

    .main-navigation a {
        padding: 12px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        font-size: 0.95rem;
    }

    .main-navigation a:last-child {
        border-bottom: 0;
    }

    .main-navigation a::after {
        display: none;
    }

    .header-button {
        margin-left: 5px;
    }

    .hero {
        min-height: 0;
    }

    .hero::after {
        inset: 46% 0 0;
    }

    .hero-layout {
        grid-template-columns: 1fr;
        gap: 54px;
        padding-top: 76px;
        padding-bottom: 76px;
    }

    .hero-content {
        max-width: 720px;
    }

    .hero-visual {
        width: min(100%, 570px);
        min-height: 410px;
        justify-self: center;
    }

    .credibility-grid,
    .focus-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .credibility-grid article:nth-child(3) {
        border-left: 1px solid var(--grey-100);
    }

    .credibility-grid article:nth-child(-n + 2) {
        border-bottom: 1px solid var(--grey-100);
    }

    .two-column,
    .partner-note {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .focus-grid {
        border-bottom: 0;
    }

    .focus-card:nth-child(2) {
        border-right: 1px solid var(--grey-200);
    }

    .focus-card:nth-child(-n + 2) {
        border-bottom: 1px solid var(--grey-200);
    }

    .focus-card:nth-child(3) {
        grid-column: 1 / -1;
        min-height: 220px;
        border-bottom: 1px solid var(--grey-200);
        border-left: 1px solid var(--grey-200);
    }

    .principles-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .contact-inner {
        align-items: flex-start;
        flex-direction: column;
        gap: 36px;
    }
}

@media (max-width: 600px) {
    :root {
        --header-height: 76px;
        --section-padding: 66px;
    }

    .brand {
        --logo-width: 138px;
        --logo-height: 52px;
        --logo-offset: -9px;
    }

    .container {
        width: min(calc(100% - 32px), var(--container-width));
    }

    .header-inner {
        gap: 12px;
    }

    .header-button {
        flex: 0 0 auto;
        margin-left: 0;
        padding: 8px 11px;
        font-size: 0.74rem;
        white-space: nowrap;
    }

    .main-navigation {
        right: -16px;
        left: -16px;
        padding-right: 16px;
        padding-left: 16px;
    }

    .hero-layout {
        gap: 44px;
        padding-top: 58px;
        padding-bottom: 60px;
    }

    .hero h1 {
        font-size: clamp(2.75rem, 13.5vw, 3.55rem);
        line-height: 1;
    }

    .hero-text {
        margin-top: 24px;
        font-size: 0.98rem;
        line-height: 1.67;
    }

    .hero-actions {
        align-items: stretch;
        flex-direction: column;
        margin-top: 32px;
    }

    .button {
        width: 100%;
    }

    .hero-visual {
        min-height: 349px;
        padding: 17px;
    }

    .infrastructure-frame {
        min-height: 224px;
        gap: 8px;
        padding: 22px 11px;
    }

    .server-column {
        gap: 7px;
        padding: 7px;
    }

    .server-column span {
        min-height: 21px;
    }

    .server-column span::before {
        left: 4px;
    }

    .server-column span::after {
        right: 4px;
        box-shadow: none;
    }

    .credibility-grid,
    .focus-grid {
        grid-template-columns: 1fr;
    }

    .credibility-grid article {
        min-height: auto;
        padding: 23px 22px;
        border-bottom: 1px solid var(--grey-100);
        border-left: 1px solid var(--grey-100);
    }

    .credibility-grid article:last-child {
        border-bottom: 0;
    }

    .section h2,
    .contact-section h2 {
        font-size: clamp(2rem, 10vw, 2.75rem);
    }

    .section-heading {
        margin-bottom: 38px;
    }

    .focus-grid {
        border-top: 0;
    }

    .focus-card,
    .focus-card:nth-child(3) {
        grid-column: auto;
        min-height: auto;
        padding: 27px 25px 30px;
        border: 1px solid var(--grey-200);
        border-bottom: 0;
    }

    .focus-card:last-child {
        border-bottom: 1px solid var(--grey-200);
    }

    .card-number {
        margin-bottom: 25px;
    }

    .partner-note {
        padding: 28px 25px;
    }

    .contact-section {
        padding: 68px 0;
    }

    .footer-inner {
        align-items: flex-start;
        flex-direction: column;
        gap: 18px;
    }
}

@media (max-width: 390px) {
    .brand {
        --logo-width: 126px;
        --logo-height: 47px;
        --logo-offset: -8px;
    }

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

    .hero-visual {
        min-height: 328px;
    }

    .infrastructure-frame {
        min-height: 205px;
    }

    .server-column-tertiary {
        display: none;
    }

    .infrastructure-frame {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}