* {
    box-sizing: border-box;
}

:root {
    --paper: #f6fbfd;
    --surface: #ffffff;
    --surface-soft: #eaf5f7;
    --ink: #234858;
    --ink-soft: #55727d;
    --blue: #2778a5;
    --blue-deep: #205f82;
    --teal: #2f8f88;
    --mint: #bfe6df;
    --coral: #e46f58;
    --line: #bfd5dd;
    --line-strong: #8db5c5;
    --radius: 18px;
    --shadow: 0 18px 45px rgba(53, 111, 132, 0.12);
    --max: 1180px;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: "Trebuchet MS", Arial, sans-serif;
    line-height: 1.6;
}

a {
    color: var(--blue-deep);
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

a:hover {
    color: var(--coral);
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid var(--coral);
    outline-offset: 4px;
}

.site-shell {
    width: min(calc(100% - 32px), var(--max));
    margin: 0 auto;
}

.site-header {
    padding: 22px 0 0;
}

.header-rail {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 24px;
    padding: 14px 18px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 999px;
    box-shadow: 0 10px 30px rgba(53, 111, 132, 0.08);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--ink);
    font-weight: 800;
    letter-spacing: -0.02em;
    text-decoration: none;
}

.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 34px;
    height: 34px;
    background: var(--blue);
    color: #ffffff;
    border-radius: 10px 10px 4px 10px;
    font-size: 14px;
    letter-spacing: 0.04em;
}

.site-nav {
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 8px;
}

.site-nav a {
    padding: 8px 12px;
    border-radius: 999px;
    color: var(--ink);
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
    background: var(--surface-soft);
    color: var(--blue-deep);
}

main {
    padding: 34px 0 72px;
}

.service-board {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(270px, 0.65fr);
    gap: 18px;
    align-items: stretch;
}

.service-intro {
    position: relative;
    overflow: hidden;
    padding: clamp(34px, 6vw, 74px);
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 34px 12px 34px 12px;
    box-shadow: var(--shadow);
}

.service-intro::after {
    content: "";
    position: absolute;
    width: 220px;
    height: 220px;
    right: -88px;
    bottom: -92px;
    border: 30px solid var(--mint);
    border-radius: 50%;
}

.eyebrow {
    display: block;
    margin: 0 0 16px;
    color: var(--teal);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

h1,
h2,
h3 {
    margin-top: 0;
    line-height: 1.08;
    letter-spacing: -0.035em;
}

h1 {
    max-width: 780px;
    margin-bottom: 20px;
    font-size: 40px;
    font-weight: 800;
}

h2 {
    margin-bottom: 16px;
    font-size: 28px;
}

h3 {
    margin-bottom: 10px;
    font-size: 20px;
}

p {
    margin-top: 0;
    font-size: 16px;
}

.lead {
    max-width: 720px;
    margin-bottom: 0;
    color: var(--ink-soft);
}

.route-panel {
    display: grid;
    align-content: space-between;
    gap: 28px;
    padding: 28px;
    background: var(--blue);
    color: #ffffff;
    border-radius: 12px 34px 12px 34px;
}

.route-panel h2,
.route-panel p,
.route-panel a {
    color: #ffffff;
}

.route-code {
    display: inline-flex;
    width: max-content;
    padding: 7px 10px;
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.route-list {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.route-list li {
    padding-top: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.28);
}

.device-ledger {
    margin-top: 18px;
    padding: clamp(28px, 5vw, 58px);
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: 18px 34px 18px 34px;
}

.section-head {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(280px, 1.2fr);
    gap: 24px;
    align-items: end;
    margin-bottom: 28px;
}

.section-head p {
    margin-bottom: 0;
    color: var(--ink-soft);
}

.ledger-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    background: var(--surface);
    border: 1px solid var(--line-strong);
    border-radius: 18px;
    overflow: hidden;
}

.ledger-item {
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 16px;
    padding: 24px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.ledger-item:nth-child(2n) {
    border-right: 0;
}

.ledger-item:nth-last-child(-n + 2) {
    border-bottom: 0;
}

.ledger-index {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    background: var(--mint);
    border-radius: 12px 12px 4px 12px;
    font-weight: 800;
}

.ledger-item p {
    margin-bottom: 0;
    color: var(--ink-soft);
}

.diagnostic-strip {
    display: grid;
    grid-template-columns: 0.72fr 1.28fr;
    margin-top: 18px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 34px 18px 34px 18px;
    overflow: hidden;
}

.diagnostic-title {
    padding: clamp(28px, 5vw, 52px);
    background: var(--teal);
    color: #ffffff;
}

.diagnostic-title h2,
.diagnostic-title p,
.diagnostic-title .eyebrow {
    color: #ffffff;
}

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

.case {
    padding: 28px;
    border-left: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.case:nth-last-child(-n + 2) {
    border-bottom: 0;
}

.case p {
    margin-bottom: 0;
    color: var(--ink-soft);
}

.city-band {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(250px, 0.75fr);
    gap: 18px;
    margin-top: 18px;
}

.city-copy,
.city-note {
    padding: clamp(28px, 5vw, 52px);
    border: 1px solid var(--line);
}

.city-copy {
    background: var(--surface);
    border-radius: 18px 34px 18px 34px;
}

.city-note {
    background: #eef8f4;
    border-radius: 34px 18px 34px 18px;
}

.city-copy p:last-child,
.city-note p:last-child {
    margin-bottom: 0;
}

.inline-link {
    font-weight: 800;
}

.topic-stack {
    display: grid;
    gap: 14px;
    margin-top: 18px;
}

.topic-row {
    display: grid;
    grid-template-columns: minmax(160px, 0.38fr) minmax(0, 1fr);
    gap: 18px;
    padding: 22px 24px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 16px;
}

.topic-row h2,
.topic-row h3,
.topic-row p {
    margin-bottom: 0;
}

.topic-label {
    color: var(--teal);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.local-frame {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 18px;
}

.local-heading,
.local-body {
    padding: clamp(28px, 5vw, 54px);
    border: 1px solid var(--line);
}

.local-heading {
    background: var(--blue);
    color: #ffffff;
    border-radius: 34px 12px 34px 12px;
}

.local-heading h1,
.local-heading p,
.local-heading .eyebrow {
    color: #ffffff;
}

.local-body {
    background: var(--surface);
    border-radius: 12px 34px 12px 34px;
}

.local-body p:last-child {
    margin-bottom: 0;
}

.site-footer {
    padding: 0 0 34px;
}

.footer-rail {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    padding: 20px 22px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 18px;
    color: var(--ink-soft);
    font-size: 14px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.footer-links a {
    color: var(--ink);
    font-weight: 700;
}

@media (max-width: 860px) {
    .service-board,
    .diagnostic-strip,
    .city-band,
    .local-frame,
    .section-head {
        grid-template-columns: 1fr;
    }

    .diagnostic-cases {
        grid-template-columns: 1fr;
    }

    .case,
    .case:nth-last-child(-n + 2) {
        border-left: 0;
        border-bottom: 1px solid var(--line);
    }

    .case:last-child {
        border-bottom: 0;
    }
}

@media (max-width: 640px) {
    .site-shell {
        width: min(calc(100% - 20px), var(--max));
    }

    .header-rail {
        grid-template-columns: 1fr;
        border-radius: 22px;
    }

    .site-nav {
        justify-content: flex-start;
    }

    .site-nav a {
        padding-left: 0;
        padding-right: 10px;
    }

    main {
        padding-top: 20px;
    }

    .service-intro,
    .route-panel,
    .device-ledger,
    .diagnostic-title,
    .city-copy,
    .city-note,
    .local-heading,
    .local-body {
        border-radius: 20px;
    }

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

    .ledger-item,
    .ledger-item:nth-child(2n),
    .ledger-item:nth-last-child(-n + 2) {
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .ledger-item:last-child {
        border-bottom: 0;
    }

    .topic-row {
        grid-template-columns: 1fr;
    }

    .footer-rail {
        flex-direction: column;
    }
}


.location-rail {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-top: 18px;
}

.location-rail a {
    display: block;
    padding: 15px 16px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 14px;
    color: var(--ink);
    font-weight: 800;
    text-decoration: none;
}

.location-rail a:hover,
.location-rail a:focus-visible {
    background: var(--surface-soft);
    color: var(--blue-deep);
}

.local-switch {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 22px;
    padding-top: 20px;
    border-top: 1px solid var(--line);
}

.local-switch a {
    padding: 8px 11px;
    background: var(--surface-soft);
    border-radius: 999px;
    color: var(--ink);
    font-size: 14px;
    font-weight: 800;
    text-decoration: none;
}

@media (max-width: 860px) {
    .location-rail {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .location-rail {
        grid-template-columns: 1fr;
    }
}