:root {
    --navy: #102b46;
    --deep: #0b2035;
    --blue: #247bb6;
    --sky: #cde7f6;
    --ink: #223545;
    --muted: #657482;
    --line: #dce5eb;
    --pale: #f3f7fa;
    --white: #fff;
    --green: #74b995;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--ink);
    background: white
}

* {
    box-sizing: border-box
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 85px
}

body {
    margin: 0;
    min-width: 320px
}

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

button, input, textarea {
    font: inherit
}

button {
    cursor: pointer
}

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible {
    outline: 3px solid var(--blue);
    outline-offset: 3px
}

.container {
    width: min(100% - 40px, 1200px);
    margin-inline: auto
}

.narrow {
    max-width: 820px
}

.skip {
    position: absolute;
    top: -100px;
    left: 20px;
    background: white;
    padding: 12px;
    z-index: 50
}

.skip:focus {
    top: 5px
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: #ffffffee;
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(12px)
}

.header-inner {
    height: 78px;
    display: flex;
    align-items: center;
    gap: 36px
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--navy);
    font-weight: 800;
    font-size: 21px;
    letter-spacing: -.04em;
    line-height: 1
}

.brand small {
    display: block;
    font-size: 10px;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--muted);
    font-weight: 600;
    margin-top: 6px
}

.brand-mark {
    width: 37px;
    height: 37px;
    display: grid;
    place-items: center;
    position: relative;
    background: var(--navy);
    color: white;
    border-radius: 8px;
    font-size: 24px;
    letter-spacing: 0
}

.brand-mark span {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: #79b7db;
    position: absolute;
    right: 5px;
    bottom: 5px
}

.desktop-nav {
    display: flex;
    gap: 28px;
    margin-left: auto;
    align-items: center;
    font-size: 15px;
    font-weight: 600;
    color: var(--navy)
}

.desktop-nav > a:hover, .dropdown > a:hover, .footer a:hover, .contact-links a:hover {
    color: var(--blue)
}

.dropdown {
    position: relative;
    padding: 25px 0
}

.dropdown > a {
    display: inline-flex;
    align-items: center;
    gap: 5px
}

.dropdown > a span {
    width: 7px;
    height: 7px;
    border: solid currentColor;
    border-width: 0 2px 2px 0;
    color: inherit;
    font-size: 0;
    line-height: 0;
    transform: translateY(-2px) rotate(45deg)
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: -18px;
    min-width: 270px;
    background: white;
    border: 1px solid var(--line);
    box-shadow: 0 18px 38px #0b203523;
    padding: 10px;
    border-radius: 7px
}

.dropdown:hover .dropdown-menu, .dropdown:focus-within .dropdown-menu {
    display: grid
}

.dropdown-menu a {
    padding: 12px;
    font-weight: 500
}

.dropdown-menu a:hover {
    background: var(--pale)
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 19px
}

.phone {
    white-space: nowrap;
    color: var(--navy);
    font-weight: 700;
    font-size: 15px
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 12px 24px;
    border: 1px solid var(--blue);
    border-radius: 5px;
    background: var(--blue);
    color: white;
    font-weight: 700;
    font-size: 15px;
    text-align: center;
    transition: background .2s, transform .2s
}

.btn:hover {
    background: #146392;
    transform: translateY(-1px)
}

.btn-small {
    min-height: 43px;
    padding: 9px 16px;
    font-size: 13px;
    white-space: nowrap
}

.btn-outline {
    background: transparent;
    color: var(--navy);
    border-color: #b8cad8
}

.btn-outline:hover {
    background: #e9f3f9;
    color: var(--navy)
}

.btn-dark {
    background: var(--navy);
    border-color: var(--navy)
}

.mobile-call, .mobile-menu {
    display: none
}

.hero {
    background: linear-gradient(115deg, #f5f9fc 0%, #e9f2f8 100%);
    overflow: hidden
}

.hero-grid {
    min-height: 575px;
    display: grid;
    grid-template-columns:1.05fr .95fr;
    align-items: center;
    gap: 60px;
    padding-block: 70px
}

.hero-copy {
    max-width: 630px
}

h1, h2, h3, p {
    margin-top: 0
}

h1, h2, h3 {
    color: var(--navy);
    letter-spacing: -.035em
}

h1 {
    font-size: clamp(42px, 4.5vw, 66px);
    line-height: 1.08;
    margin: 23px 0
}

h1 em {
    font-style: normal;
    color: var(--blue)
}

.hero-copy > p {
    font-size: 19px;
    line-height: 1.65;
    max-width: 590px;
    color: #425c6f;
    margin-bottom: 29px
}

.hero-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap
}

.hero-phone {
    display: inline-block;
    margin-top: 28px;
    color: var(--muted);
    font-size: 15px
}

.hero-phone strong {
    color: var(--navy);
    margin-left: 5px
}

.network-panel {
    min-height: 390px;
    background: var(--navy);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 25px 60px #102b4629;
    color: white
}

.network-panel:before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: linear-gradient(#ffffff0d 1px, transparent 1px), linear-gradient(90deg, #ffffff0d 1px, transparent 1px);
    background-size: 40px 40px
}

.net-caption, .net-foot {
    position: absolute;
    left: 30px;
    right: 30px;
    font-size: 11px;
    letter-spacing: .13em;
    font-weight: 700;
    color: #aac8dc
}

.net-caption {
    top: 27px
}

.net-foot {
    bottom: 26px;
    display: flex;
    justify-content: space-between;
    border-top: 1px solid #ffffff26;
    padding-top: 18px
}

.net-orbit {
    position: absolute;
    inset: 65px 35px 57px
}

.net-orbit:before, .net-orbit:after {
    content: "";
    position: absolute;
    border: 1px solid #5ca8d35c;
    border-radius: 50%;
    inset: 7% 10%
}

.net-orbit:after {
    inset: 23% 26%;
    border-color: #5ca8d380
}

.net-center {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    background: #1e5274;
    border: 1px solid #76b9dc;
    width: 135px;
    height: 135px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    z-index: 2;
    box-shadow: 0 0 0 10px #ffffff0a
}

.net-center b {
    font-size: 31px
}

.net-center span {
    font-size: 11px;
    text-align: center;
    line-height: 1.3
}

.net-node {
    position: absolute;
    background: white;
    color: var(--navy);
    border-radius: 4px;
    padding: 12px 15px;
    font-size: 13px;
    font-weight: 700;
    box-shadow: 0 7px 20px #0002;
    z-index: 3
}

.node-a {
    left: 3%;
    top: 16%
}

.node-b {
    right: 0;
    top: 15%
}

.node-c {
    left: 0;
    bottom: 12%
}

.node-d {
    right: 9%;
    bottom: 8%
}

.section {
    padding-block: 90px
}

.alt {
    background: var(--pale)
}

.section-head {
    max-width: 700px;
    margin-bottom: 36px
}

.section-head h2, .fiber-feature h2, .cta-band h2 {
    font-size: clamp(30px, 3vw, 43px);
    line-height: 1.16;
    margin: 13px 0 14px
}

.section-head p, .lead {
    font-size: 18px;
    line-height: 1.65;
    color: var(--muted);
    margin: 0
}

.service-grid {
    display: grid;
    grid-template-columns:repeat(6, 1fr);
    gap: 16px
}

.service-card {
    grid-column: span 2;
    display: flex;
    flex-direction: column;
    min-height: 275px;
    padding: 29px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: white;
    transition: box-shadow .2s, border-color .2s, transform .2s
}

.service-card:nth-child(4), .service-card:nth-child(5) {
    grid-column: span 3;
    min-height: 235px
}

.service-card:hover {
    border-color: #8dbbd8;
    box-shadow: 0 14px 35px #102b4612;
    transform: translateY(-3px)
}

.service-icon {
    width: 45px;
    height: 45px;
    border-radius: 5px;
    display: grid;
    place-items: center;
    background: #e7f3fa;
    color: var(--blue);
    font-size: 24px;
    margin-bottom: 15px
}

.service-card h3, .card h3 {
    font-size: 22px;
    margin: 14px 0 10px
}

.service-card p, .card p {
    color: var(--muted);
    line-height: 1.55;
    font-size: 16px;
    margin-bottom: 17px
}

.text-link {
    margin-top: auto;
    color: var(--blue);
    font-weight: 700;
    font-size: 14px
}

.text-link span {
    margin-left: 5px
}

.split {
    display: grid;
    grid-template-columns:.8fr 1.2fr;
    gap: 90px;
    align-items: start
}

.task-list > div {
    position: relative;
    border-bottom: 1px solid var(--line);
    padding: 18px 0 18px 28px
}

.task-list p {
    font-size: 19px;
    color: var(--navy);
    font-weight: 600;
    line-height: 1.35;
    margin: 0
}

.task-list > div:before {
    content: "";
    position: absolute;
    left: 0;
    top: 25px;
    width: 10px;
    height: 10px;
    background: var(--blue);
    border-radius: 50%
}

.cards {
    display: grid;
    gap: 17px
}

.cards.three {
    grid-template-columns:repeat(3, 1fr)
}

.card {
    padding: 28px;
    background: white;
    border: 1px solid var(--line);
    border-radius: 6px;
    min-height: 200px
}

.alt .card {
    background: white
}

.dark-section {
    background: var(--navy);
    color: white
}

.dark-section h2, .dark-section h3 {
    color: white
}

.process-grid {
    display: grid;
    grid-template-columns:repeat(5, 1fr);
    gap: 20px
}

.process-grid > div {
    border-top: 1px solid #7ea4bc;
    padding-top: 20px
}

.process-grid h3 {
    font-size: 19px;
    margin: 0 0 10px
}

.process-grid p {
    color: #b8cbd9;
    line-height: 1.5
}

.fiber-feature {
    display: grid;
    grid-template-columns:1fr .8fr;
    gap: 85px;
    align-items: center
}

.fiber-feature p {
    font-size: 18px;
    line-height: 1.65;
    color: var(--muted);
    max-width: 600px;
    margin-bottom: 25px
}

.fiber-visual {
    padding: 0
}

.fiber-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.fiber-list li {
    position: relative;
    border-bottom: 1px solid var(--line);
    padding: 18px 0 18px 28px;
    font-size: 19px;
    color: var(--navy);
    font-weight: 600;
    line-height: 1.35
}

.fiber-list li:before {
    content: "";
    position: absolute;
    left: 0;
    top: 25px;
    width: 10px;
    height: 10px;
    background: var(--blue);
    border-radius: 50%
}

.faq {
    border-bottom: 1px solid var(--line);
    padding: 18px 0
}

.faq:first-of-type {
    border-top: 1px solid var(--line)
}

.faq summary {
    cursor: pointer;
    color: var(--navy);
    font-size: 18px;
    font-weight: 700;
    list-style: none;
    display: flex;
    justify-content: space-between;
    gap: 15px;
    min-height: 35px;
    align-items: center
}

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

.faq summary:after {
    content: "+";
    color: var(--blue);
    font-size: 26px;
    line-height: 1;
    font-weight: 400
}

.faq[open] summary:after {
    content: "−"
}

.faq p {
    color: var(--muted);
    line-height: 1.6;
    margin: 12px 40px 5px 0
}

.cta-band {
    background: var(--deep);
    color: white;
    padding-block: 85px
}

.cta-grid {
    display: grid;
    grid-template-columns:1fr .85fr;
    gap: 100px;
    align-items: start
}

.cta-band h2 {
    color: white;
    max-width: 550px
}

.cta-band p {
    color: #becfdb;
    line-height: 1.6;
    font-size: 18px;
    max-width: 550px
}

.cta-direct {
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-top: 40px
}

.cta-direct a {
    font-size: 24px;
    font-weight: 700
}

.cta-direct span {
    color: #9db5c5
}

.request-form {
    padding: 30px;
    background: white;
    border-radius: 6px;
    color: var(--ink);
    display: grid;
    gap: 14px
}

.request-form h3 {
    font-size: 25px;
    margin: 0
}

.request-form > p {
    font-size: 14px;
    color: var(--muted);
    margin: 0 0 4px;
    line-height: 1.4
}

.request-form label {
    font-size: 14px;
    font-weight: 700;
    display: grid;
    gap: 6px
}

.request-form label span:not(.consent span) {
    font-weight: 400;
    color: var(--muted)
}

.request-form input:not([type=checkbox]), .request-form textarea {
    width: 100%;
    min-height: 44px;
    padding: 10px 12px;
    border: 1px solid #b8c7d1;
    border-radius: 4px;
    background: white;
    color: var(--ink);
    font-size: 16px
}

.request-form input.uncompleted-phonemask {
    border-color: #d98c8c;
    background: #fff8f8
}

.request-form input.valid-phonemask {
    border-color: #74b995
}

.request-form input.invalid-name {
    border-color: #d98c8c;
    background: #fff8f8
}

.request-form input.valid-name {
    border-color: #74b995
}

.request-form textarea {
    resize: vertical
}

.request-form .consent {
    display: flex;
    align-items: flex-start;
    font-weight: 400;
    gap: 9px;
    line-height: 1.4
}

.consent input {
    width: 18px;
    height: 18px;
    flex: none;
    margin: 1px 0
}

.consent a {
    text-decoration: underline;
    color: var(--blue)
}

.form-consent {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.45
}

.form-consent a {
    color: var(--blue);
    text-decoration: underline;
    text-underline-offset: 3px
}

.request-form .btn {
    width: 100%
}

.request-form .btn:disabled {
    cursor: wait;
    opacity: .72;
    transform: none
}

.form-status {
    display: none;
    margin: 0;
    padding: 12px 14px;
    border-radius: 5px;
    border: 1px solid transparent;
    font-size: 14px;
    font-weight: 700;
    line-height: 1.4
}

.form-status.sending, .form-status.success, .form-status.error {
    display: block
}

.form-status.sending {
    background: #eef6fb;
    border-color: #c7deec;
    color: var(--navy)
}

.form-status.success {
    background: #edf8f2;
    border-color: #bfe3cf;
    color: #276045
}

.form-status.error {
    background: #fff1f1;
    border-color: #efc0c0;
    color: #8a2e2e
}

.request-form small {
    font-size: 12px;
    color: var(--muted);
    line-height: 1.4
}

.contact-grid {
    display: grid;
    grid-template-columns:1fr 1fr;
    gap: 80px;
    align-items: center
}

.contact-grid > div > p {
    color: var(--muted);
    line-height: 1.6
}

.contact-links {
    display: grid;
    gap: 10px;
    margin: 24px 0;
    color: var(--navy);
    font-size: 20px;
    font-weight: 700
}

.map-placeholder {
    background: repeating-linear-gradient(27deg, #e8eff4 0 28px, #edf3f7 28px 58px);
    border: 1px solid var(--line);
    min-height: 290px;
    padding: 35px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: var(--navy);
    border-radius: 6px
}

.map-placeholder span {
    font-size: 12px;
    letter-spacing: .14em;
    font-weight: 800;
    color: var(--blue)
}

.map-placeholder strong {
    font-size: 24px;
    margin: 8px 0 23px
}

.map-placeholder a {
    background: white;
    border: 1px solid var(--line);
    padding: 12px 18px;
    border-radius: 4px;
    font-weight: 700
}

.footer {
    background: #091b2b;
    color: #aabecb;
    padding-top: 65px
}

.footer-grid {
    display: grid;
    grid-template-columns:1.6fr 1fr 1fr 1.15fr;
    gap: 38px
}

.footer-brand {
    color: white
}

.footer-brand .brand-mark {
    background: #1d5b83
}

.footer-grid p {
    max-width: 280px;
    line-height: 1.6;
    margin: 20px 0
}

.footer-grid > div:not(:first-child) {
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 14px
}

.footer-grid strong {
    color: white;
    margin-bottom: 8px
}

.footer-bottom {
    border-top: 1px solid #ffffff20;
    margin-top: 55px;
    padding-block: 23px;
    display: flex;
    justify-content: space-between;
    gap: 20px;
    font-size: 12px
}

.page-hero {
    background: var(--pale);
    padding: 20px 0 66px
}

.breadcrumbs {
    display: flex;
    gap: 11px;
    font-size: 13px;
    color: var(--muted);
    padding: 13px 0 30px
}

.breadcrumbs a:hover {
    color: var(--blue)
}

.page-hero-grid {
    display: grid;
    grid-template-columns:1.5fr .5fr;
    align-items: center;
    gap: 60px
}

.page-hero h1 {
    font-size: clamp(39px, 4.2vw, 59px);
    max-width: 840px
}

.page-hero p {
    font-size: 19px;
    line-height: 1.6;
    color: #4d6374;
    max-width: 730px;
    margin-bottom: 25px
}

.hero-line-art {
    display: flex;
    align-items: center;
    transform: rotate(-35deg);
    color: var(--blue);
    font-size: 13px;
    font-weight: 800
}

.hero-line-art i {
    height: 3px;
    background: #8dbbd8;
    width: 60px
}

.hero-line-art span {
    border: 2px solid var(--blue);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: grid;
    place-items: center;
    background: white;
    flex: none
}

.number-list {
    list-style: none;
    margin: 0;
    padding: 0
}

.number-list li {
    position: relative;
    border-bottom: 1px solid var(--line);
    padding: 18px 0 18px 28px;
    font-size: 19px;
    color: var(--navy);
    font-weight: 600;
    line-height: 1.35
}

.number-list li:before {
    content: "";
    position: absolute;
    left: 0;
    top: 25px;
    width: 10px;
    height: 10px;
    background: var(--blue);
    border-radius: 50%
}

.requisites {
    border-top: 1px solid var(--line)
}

.requisites > div {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid var(--line);
    padding: 18px 0
}

.requisites dt {
    color: var(--muted)
}

.requisites dd {
    font-weight: 700;
    margin: 0
}

.muted {
    color: var(--muted);
    line-height: 1.6
}

.prose {
    font-size: 17px;
    line-height: 1.75
}

.prose h2 {
    margin: 30px 0 8px
}

.prose a {
    text-decoration: underline;
    color: var(--blue)
}

.not-found {
    min-height: 65vh;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding-block: 60px
}

.error-num {
    font-size: 100px;
    font-weight: 800;
    color: #d2e7f3
}

.not-found h1 {
    font-size: 45px;
    margin: 0
}

.not-found p {
    color: var(--muted);
    font-size: 18px
}

@media (max-width: 1120px) {
    .header-inner {
        gap: 20px
    }

    .desktop-nav {
        gap: 17px
    }

    .header-actions .btn {
        display: none
    }

    .hero-grid {
        gap: 35px
    }

    .cta-grid {
        gap: 55px
    }
}

@media (max-width: 900px) {
    .desktop-nav, .header-actions {
        display: none
    }

    .header-inner {
        height: 68px
    }

    .mobile-call {
        display: grid;
        margin-left: auto;
        width: 44px;
        height: 44px;
        place-items: center;
        color: var(--navy);
        font-size: 23px
    }

    .mobile-menu {
        display: block;
        position: relative
    }

    .mobile-menu summary {
        list-style: none;
        width: 44px;
        height: 44px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 5px;
        cursor: pointer
    }

    .mobile-menu summary::-webkit-details-marker {
        display: none
    }

    .mobile-menu summary span {
        width: 22px;
        height: 2px;
        background: var(--navy)
    }

    .mobile-menu nav {
        position: absolute;
        right: -20px;
        top: 51px;
        width: min(360px, 100vw);
        background: white;
        box-shadow: 0 14px 28px #102b4625;
        border: 1px solid var(--line);
        display: grid;
        padding: 15px
    }

    .mobile-menu nav a {
        padding: 11px;
        font-size: 15px
    }

    .mobile-menu nav a:nth-child(n+2):nth-child(-n+6) {
        padding-left: 25px;
        color: var(--muted)
    }

    .mobile-menu .menu-cta {
        background: var(--blue);
        color: white;
        margin-top: 6px;
        text-align: center
    }

    .hero-grid {
        grid-template-columns:1fr;
        padding-block: 65px
    }

    .network-panel {
        min-height: 310px
    }

    .split, .fiber-feature, .contact-grid, .cta-grid {
        gap: 35px
    }

    .process-grid {
        grid-template-columns:repeat(3, 1fr)
    }

    .footer-grid {
        grid-template-columns:repeat(2, 1fr)
    }
}

@media (max-width: 650px) {
    .container {
        width: min(100% - 32px, 1200px)
    }

    .hero-grid {
        padding-block: 48px;
        gap: 35px
    }

    .hero h1 {
        font-size: clamp(38px, 9vw, 52px)
    }

    .hero-copy > p, .page-hero p {
        font-size: 17px
    }

    .hero-buttons .btn {
        width: 100%
    }

    .network-panel {
        min-height: 290px
    }

    .net-orbit {
        inset: 55px 20px 50px
    }

    .net-node {
        font-size: 11px;
        padding: 8px
    }

    .net-center {
        height: 100px;
        width: 100px
    }

    .net-caption, .net-foot {
        left: 15px;
        right: 15px;
        font-size: 9px
    }

    .section {
        padding-block: 64px
    }

    .section-head h2, .fiber-feature h2, .cta-band h2 {
        font-size: 31px
    }

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

    .service-card, .service-card:nth-child(4), .service-card:nth-child(5) {
        grid-column: auto;
        min-height: 0;
        padding: 23px
    }

    .cards.three, .split, .fiber-feature, .contact-grid, .cta-grid, .page-hero-grid {
        grid-template-columns:1fr
    }

    .split {
        gap: 26px
    }

    .card {
        min-height: 0
    }

    .process-grid {
        grid-template-columns:1fr 1fr
    }

    .process-grid h3 {
        margin-top: 15px
    }

    .cta-band {
        padding-block: 65px
    }

    .cta-direct {
        margin-top: 20px
    }

    .request-form {
        padding: 23px
    }

    .footer-grid {
        grid-template-columns:1fr 1fr;
        gap: 30px
    }

    .footer-grid > div:first-child {
        grid-column: span 2
    }

    .footer-bottom {
        display: grid
    }

    .page-hero {
        padding-bottom: 45px
    }

    .page-hero h1 {
        font-size: 38px
    }

    .hero-line-art {
        display: none
    }
}

@media (max-width: 390px) {
    .brand {
        font-size: 18px
    }

    .brand-mark {
        width: 33px;
        height: 33px
    }

    .process-grid, .footer-grid {
        grid-template-columns:1fr
    }

    .footer-grid > div:first-child {
        grid-column: auto
    }

    .net-foot {
        font-size: 8px
    }

    .contact-links {
        font-size: 18px
    }
}

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

    *, *:before, *:after {
        transition: none !important;
        animation: none !important
    }
}