/* ==========================================================================
   Final CSU Visual Evolution — shared system
   Brand anchors kept: navy ground, single cyan accent, Space Grotesk + Inter.
   ========================================================================== */

:root {
    --bg: #010812;
    --bg-band: #030c18;
    --surface: #071421;
    --surface-2: #0a1b2c;

    --title: #f4f8ff;
    --text-strong: #d3dce8;
    --text: #aab7c8;
    --text-muted: #8494a8;

    --accent: #00cbec;
    --accent-hover: #3ddcf3;
    --accent-ink: #01121f;
    --accent-soft: rgba(0, 203, 236, 0.08);

    --line: rgba(0, 209, 255, 0.16);
    --line-strong: rgba(0, 209, 255, 0.4);
    --hair: rgba(170, 183, 200, 0.12);

    --glow: 0 0 28px rgba(0, 203, 236, 0.35);

    --font-heading: "Space Grotesk", system-ui, sans-serif;
    --font-body: "Inter", system-ui, sans-serif;

    --radius: 16px;
    --radius-btn: 10px;

    --section: 112px;
    --header-h: 84px;
}

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

html {
    -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

button,
input,
textarea {
    font: inherit;
    color: inherit;
}

h1,
h2,
h3,
h4,
p,
ul,
ol,
dl,
dd,
figure {
    margin: 0;
}

ul,
ol {
    padding: 0;
    list-style: none;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
}

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

.skip-link {
    position: absolute;
    left: 16px;
    top: -60px;
    z-index: 100;
    padding: 10px 16px;
    background: var(--accent);
    color: var(--accent-ink);
    font-weight: 600;
    border-radius: var(--radius-btn);
}

.skip-link:focus {
    top: 12px;
}

/* ---------- Layout ---------- */

.container {
    width: min(100% - 48px, 1200px);
    margin-inline: auto;
}

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

.section--flush-top {
    padding-top: 0;
}

/* Full-bleed band: used for one "chapter" per page so sections stop reading
   as a stack of identical boxes (C V-07, V-13; X visual #14). */
.band {
    background:
        radial-gradient(ellipse 60% 80% at 100% 0%, rgba(0, 203, 236, 0.05), transparent 60%),
        var(--bg-band);
    border-block: 1px solid var(--hair);
}

/* Restrained hairline grid motif — decorative only. */
.gridlines {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(0, 203, 236, 0.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 203, 236, 0.055) 1px, transparent 1px);
    background-size: 64px 64px;
    background-position: center top;
    -webkit-mask-image: radial-gradient(ellipse 65% 70% at 72% 38%, #000 10%, transparent 72%);
    mask-image: radial-gradient(ellipse 65% 70% at 72% 38%, #000 10%, transparent 72%);
}

/* ---------- Typography ---------- */

h1,
.h1 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 60px;
    line-height: 1.06;
    letter-spacing: -0.015em;
    color: #fff;
}

h2,
.h2 {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 40px;
    line-height: 1.15;
    letter-spacing: -0.01em;
    color: var(--title);
}

.h2-sub {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 28px;
    line-height: 1.2;
    color: var(--title);
}

h3,
.h3 {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 20px;
    line-height: 1.35;
    color: var(--title);
}

.accent {
    color: var(--accent);
}

.lead {
    font-size: 19px;
    line-height: 1.6;
    color: var(--text-strong);
    max-width: 34em;
}

.support {
    font-size: 15px;
    line-height: 1.55;
    color: var(--text);
}

.kicker {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
}

.kicker::before {
    content: "";
    width: 28px;
    height: 1px;
    background: var(--accent);
    opacity: 0.7;
}

.section-head {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 56px;
    max-width: 720px;
}

.section-head p {
    font-size: 17px;
    color: var(--text);
}

.section-head--split {
    max-width: none;
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
    gap: 32px;
}

/* ---------- Buttons: two tiers only (I-01 / G4) ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    height: 54px;
    padding: 0 26px;
    border-radius: var(--radius-btn);
    border: 1px solid transparent;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 16px;
    line-height: 1;
    white-space: nowrap;
    cursor: pointer;
    transition: background-color 0.2s, box-shadow 0.2s, border-color 0.2s, color 0.2s;
}

.btn svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.btn--primary {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-ink);
    box-shadow: 0 0 0 rgba(0, 203, 236, 0);
}

.btn--primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    box-shadow: var(--glow);
}

.btn--secondary {
    background: transparent;
    border-color: rgba(0, 203, 236, 0.55);
    color: var(--accent);
}

.btn--secondary:hover {
    background: var(--accent-soft);
    border-color: var(--accent);
}

.btn--sm {
    height: 44px;
    padding: 0 18px;
    font-size: 15px;
}

.btn--sm svg {
    width: 18px;
    height: 18px;
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 16px;
    color: var(--accent);
    white-space: nowrap;
}

.link-arrow::after {
    content: "→";
    transition: transform 0.2s;
}

.link-arrow:hover::after {
    transform: translateX(4px);
}

.link-arrow:hover {
    text-decoration: underline;
    text-underline-offset: 4px;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px 28px;
}

/* ---------- Lists ---------- */

.tick-list {
    display: grid;
    gap: 14px;
}

.tick-list li {
    position: relative;
    padding-left: 32px;
    color: var(--text-strong);
    line-height: 1.5;
}

.tick-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 2px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 1px solid var(--line-strong);
    background:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M6 10.4l2.6 2.6L14 7.6' fill='none' stroke='%2300CBEC' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 20px no-repeat,
        rgba(0, 203, 236, 0.06);
}

.dot-list {
    display: grid;
    gap: 10px;
}

.dot-list li {
    position: relative;
    padding-left: 20px;
    font-size: 15px;
    line-height: 1.5;
    color: var(--text-strong);
}

.dot-list li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 9px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}

/* ---------- Panels: only where grouping carries meaning ---------- */

.panel {
    background: linear-gradient(180deg, var(--surface-2), var(--surface));
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

/* ---------- Header ---------- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(1, 8, 18, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--hair);
}

.header-inner {
    position: relative;
    height: var(--header-h);
    display: flex;
    align-items: center;
    gap: 40px;
}

.logo img {
    width: 136px;
    height: auto;
}

.nav {
    display: flex;
    align-items: center;
    gap: 36px;
    margin-left: auto;
}

.nav a:not(.btn) {
    position: relative;
    padding-block: 8px;
    font-weight: 500;
    font-size: 15px;
    color: var(--text);
    transition: color 0.2s;
}

.nav a:not(.btn):hover,
.nav a[aria-current="page"] {
    color: var(--title);
}

.nav a[aria-current="page"]::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px;
    border-radius: 2px;
    background: var(--accent);
}

.nav .nav-cta {
    display: none;
}

.burger {
    display: none;
}

/* ---------- Closing CTA band: a conclusion, not another panel (C V-07, M W-2) ---------- */

.cta-band {
    position: relative;
    overflow: hidden;
    padding-block: 104px;
    border-top: 1px solid var(--hair);
    background:
        radial-gradient(ellipse 55% 90% at 15% 0%, rgba(0, 203, 236, 0.12), transparent 70%),
        linear-gradient(180deg, #03101d, var(--bg));
}

.cta-band::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.6;
}

.cta-band::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -10px;
    width: 1400px;
    height: 240px;
    transform: translateX(-50%);
    background: url("../assets/images/cta-bg.png") center bottom / contain no-repeat;
    opacity: 0.55;
    /* cta-bg.png ships with an opaque navy ground; fade its box edges so the
       line art blends into the band instead of showing a rectangle. */
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent), linear-gradient(180deg, transparent, #000 45%);
    -webkit-mask-composite: source-in;
    mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent), linear-gradient(180deg, transparent, #000 45%);
    mask-composite: intersect;
    pointer-events: none;
}

.cta-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    gap: 64px;
    align-items: end;
}

.cta-inner h2 {
    font-size: 48px;
    line-height: 1.1;
}

.cta-side {
    display: grid;
    gap: 28px;
}

.cta-side p {
    font-size: 18px;
    color: var(--text-strong);
}

.cta-mail {
    font-size: 15px;
    color: var(--text);
}

.cta-mail a {
    color: var(--title);
    text-decoration: underline;
    text-decoration-color: var(--line-strong);
    text-underline-offset: 4px;
}

.cta-mail a:hover {
    color: var(--accent);
}

/* ---------- Footer: copyright back on the content grid (I-05) ---------- */

.site-footer {
    border-top: 1px solid var(--hair);
    padding-top: 72px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1.2fr 1.2fr;
    gap: 40px;
}

.footer-brand img {
    width: 150px;
    margin-bottom: 20px;
}

.footer-brand p {
    max-width: 18em;
    font-size: 15px;
}

.footer-col h2 {
    font-family: var(--font-heading);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.footer-col ul {
    display: grid;
    gap: 12px;
}

.footer-col a {
    font-size: 15px;
    color: var(--text);
    transition: color 0.2s;
}

.footer-col a:hover,
.footer-col a[aria-current="page"] {
    color: var(--accent);
}

.footer-bottom {
    margin-top: 64px;
    padding-block: 28px;
    border-top: 1px solid var(--hair);
    font-size: 14px;
    color: var(--text-muted);
}

/* ==========================================================================
   Responsive frame
   ========================================================================== */

@media (max-width: 1199px) {
    :root {
        --section: 96px;
    }

    h1,
    .h1 {
        font-size: 52px;
    }

    .nav {
        gap: 28px;
    }
}

/* Tablet: keep full nav AND the consultation action (I-02, M W-3). */
@media (max-width: 991px) {
    :root {
        --section: 80px;
        --header-h: 76px;
    }

    h1,
    .h1 {
        font-size: 44px;
    }

    h2,
    .h2 {
        font-size: 34px;
    }

    .header-inner {
        gap: 24px;
    }

    .logo img {
        width: 120px;
    }

    .nav {
        gap: 22px;
    }

    .header-cta svg {
        display: none;
    }

    .header-cta {
        padding: 0 14px;
    }

    .cta-inner {
        grid-template-columns: 1fr;
        gap: 32px;
        align-items: start;
    }

    .cta-inner h2 {
        font-size: 40px;
        max-width: 14em;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 48px 32px;
    }
}

/* Mobile: burger; menu panel starts exactly at the header edge (I-03). */
@media (max-width: 767px) {
    :root {
        --section: 64px;
        --header-h: 68px;
    }

    .container {
        width: min(100% - 32px, 1200px);
    }

    body {
        font-size: 16px;
    }

    h1,
    .h1 {
        font-size: 38px;
        line-height: 1.1;
    }

    h2,
    .h2 {
        font-size: 28px;
    }

    .h2-sub {
        font-size: 24px;
    }

    h3,
    .h3 {
        font-size: 18px;
    }

    .lead {
        font-size: 17px;
    }

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

    .section-head--split {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .logo img {
        width: 116px;
    }

    .header-cta {
        display: none;
    }

    .burger {
        display: inline-flex;
        flex-direction: column;
        justify-content: center;
        gap: 5px;
        width: 44px;
        height: 44px;
        margin-left: auto;
        padding: 0 11px;
        background: transparent;
        border: 1px solid var(--hair);
        border-radius: var(--radius-btn);
        cursor: pointer;
    }

    .burger span {
        display: block;
        height: 2px;
        border-radius: 2px;
        background: var(--title);
        transition: transform 0.2s, opacity 0.2s;
    }

    .burger[aria-expanded="true"] span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .burger[aria-expanded="true"] span:nth-child(2) {
        opacity: 0;
    }

    .burger[aria-expanded="true"] span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: -16px;
        right: -16px;
        margin: 0;
        padding: 8px 16px 24px;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background: #030b16;
        border-bottom: 1px solid var(--line);
        box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
    }

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

    .nav a:not(.btn) {
        padding: 16px 0;
        font-size: 18px;
        border-bottom: 1px solid var(--hair);
    }

    .nav a[aria-current="page"]::after {
        left: auto;
        right: 0;
        top: 50%;
        bottom: auto;
        width: 8px;
        height: 8px;
        border-radius: 50%;
        transform: translateY(-50%);
    }

    .nav .nav-cta {
        display: inline-flex;
        margin-top: 24px;
        width: 100%;
        height: 52px;
    }

    .actions {
        gap: 16px 24px;
    }

    .actions .btn--primary {
        width: 100%;
    }

    .cta-band {
        padding-block: 72px;
    }

    .cta-inner h2 {
        font-size: 32px;
    }

    .cta-side .btn {
        width: 100%;
    }

    .cta-band::after {
        width: 900px;
        height: 150px;
        opacity: 0.4;
    }

    .site-footer {
        padding-top: 56px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .footer-bottom {
        margin-top: 48px;
    }
}

/* ---------- Shared hero frame (copy left, art right — kept, M N-6) ---------- */

.hero {
    position: relative;
    overflow: hidden;
    padding-block: 72px 104px;
}

.hero::after {
    content: "";
    position: absolute;
    right: -10%;
    top: -30%;
    width: 70%;
    height: 120%;
    background: radial-gradient(closest-side, rgba(0, 203, 236, 0.1), transparent);
    pointer-events: none;
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
    gap: 48px;
}

.hero-copy {
    display: grid;
    gap: 28px;
    justify-items: start;
}

.hero-copy .actions {
    margin-top: 8px;
}

.hero-art img {
    width: 100%;
}

@media (max-width: 991px) {
    .hero {
        padding-block: 48px 80px;
    }

    .hero-grid {
        grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr);
        gap: 32px;
    }
}

@media (max-width: 767px) {
    .hero {
        padding-block: 36px 64px;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .hero-copy {
        gap: 22px;
    }

    .hero-copy .actions {
        width: 100%;
    }

    /* Decorative art capped so content reaches the first screens (O-05, C V-24). */
    .hero-art {
        max-height: 300px;
        display: flex;
        justify-content: center;
    }

    .hero-art img {
        width: auto;
        max-height: 300px;
        object-fit: contain;
    }
}

/* ---------- Shared "Why choose CSU?" strip (About, Services) ---------- */

.why-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-top: 36px;
}

.why-strip li {
    position: relative;
    display: grid;
    gap: 8px;
    align-content: start;
    padding-top: 52px;
    border-top: 1px solid var(--hair);
}

.why-strip li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 20px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 1px solid var(--line-strong);
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M6 10.4l2.6 2.6L14 7.6' fill='none' stroke='%2300CBEC' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 20px no-repeat;
}

.why-strip h3 {
    font-size: 18px;
}

@media (max-width: 991px) {
    .why-strip {
        grid-template-columns: 1fr 1fr;
        gap: 8px 40px;
    }
}

@media (max-width: 767px) {
    .why-strip {
        grid-template-columns: 1fr;
        gap: 0;
        margin-top: 24px;
    }

    .why-strip li {
        padding: 22px 0 22px 38px;
    }

    .why-strip li::before {
        top: 25px;
    }
}

/* Radar artwork ships with a lighter rectangular ground; fade its edges so no
   image box shows (same defect class as C V-17). */
.radar-fade img {
    -webkit-mask-image: radial-gradient(circle closest-side at 50% 50%, #000 78%, transparent 100%);
    mask-image: radial-gradient(circle closest-side at 50% 50%, #000 78%, transparent 100%);
}


/* ==========================================================================
   Page layer
   ========================================================================== */

/* ---------- Services: hero ---------- */

.hero--services {
    padding-bottom: 64px;
}

.hero--services + .section {
    padding-top: 64px;
}

.hero--services .hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 80px;
}

.hero--services h1 {
    font-size: 58px;
}

.hero-rings {
    position: absolute;
    right: -160px;
    top: 50%;
    width: 760px;
    height: 760px;
    transform: translateY(-50%);
    border-radius: 50%;
    pointer-events: none;
    background:
        radial-gradient(circle, transparent 0 169px, rgba(0, 203, 236, 0.16) 170px, transparent 171px),
        radial-gradient(circle, transparent 0 259px, rgba(0, 203, 236, 0.12) 260px, transparent 261px),
        radial-gradient(circle, transparent 0 359px, rgba(0, 203, 236, 0.08) 360px, transparent 361px),
        radial-gradient(circle, rgba(0, 203, 236, 0.08), transparent 45%);
}

.hero-areas {
    position: relative;
    padding: 36px 36px 36px 32px;
    gap: 0;
    border-left: 1px solid var(--line-strong);
    background: linear-gradient(90deg, rgba(0, 203, 236, 0.06), transparent 80%);
}

.hero-areas li {
    padding-block: 14px;
    padding-left: 36px;
    font-size: 17px;
    font-weight: 500;
    color: var(--title);
    border-bottom: 1px solid var(--hair);
}

.hero-areas li:last-child {
    border-bottom: 0;
}

.hero-areas li::before {
    top: 15px;
}

/* ---------- Services: explorer ---------- */

.explorer {
    display: grid;
    grid-template-columns: 380px minmax(0, 1fr);
    column-gap: 32px;
    row-gap: 10px;
    align-items: start;
}

.svc-item {
    display: contents;
}

.svc-tab {
    grid-column: 1;
    position: relative;
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 16px;
    align-items: center;
    width: 100%;
    padding: 16px 20px 16px 18px;
    text-align: left;
    background: transparent;
    border: 1px solid var(--hair);
    border-radius: 12px;
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s, box-shadow 0.2s;
}

.svc-tab:hover {
    border-color: var(--line-strong);
    background: rgba(0, 203, 236, 0.03);
}

.svc-tab .svc-icon {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid var(--line);
    background: rgba(0, 203, 236, 0.04);
}

.svc-tab .svc-icon img {
    width: 24px;
    height: 24px;
}

.svc-tab-text {
    display: grid;
    gap: 2px;
}

.svc-name {
    font-weight: 600;
    font-size: 17px;
    color: var(--title);
}

.svc-short {
    font-size: 14px;
    line-height: 1.45;
    color: var(--text);
}

/* Selected state: accent edge + restrained glow — glow means "active" (C V-06). */
.svc-item.is-active .svc-tab {
    background: linear-gradient(90deg, rgba(0, 203, 236, 0.1), rgba(0, 203, 236, 0.02));
    border-color: var(--accent);
    box-shadow: 0 0 22px rgba(0, 203, 236, 0.16);
}

.svc-item.is-active .svc-tab::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 14px;
    bottom: 14px;
    width: 3px;
    border-radius: 0 3px 3px 0;
    background: var(--accent);
}

.svc-item.is-active .svc-name {
    color: var(--accent);
}

.svc-panel {
    display: none;
    grid-column: 2;
    grid-row: 1 / span 6;
    align-self: stretch;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 32px;
    align-items: center;
    padding: 48px;
    background: linear-gradient(160deg, var(--surface-2), var(--surface) 70%);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.svc-item.is-active .svc-panel {
    display: grid;
}

.svc-panel-copy {
    display: grid;
    gap: 22px;
    align-content: start;
}

.svc-panel h3 {
    font-family: var(--font-heading);
    font-size: 32px;
    line-height: 1.15;
}

.svc-panel p {
    font-size: 17px;
    color: var(--text-strong);
}

.svc-panel .actions {
    margin-top: 10px;
}

.orbit {
    width: 100%;
    height: auto;
}

.o-ring {
    fill: none;
    stroke: rgba(0, 203, 236, 0.28);
    stroke-width: 1;
}

.o-ring--dash {
    stroke-dasharray: 2 6;
    stroke: rgba(0, 203, 236, 0.35);
}

.o-ring--faint {
    stroke: rgba(0, 203, 236, 0.1);
}

.o-link {
    stroke: var(--accent);
    stroke-width: 1;
    opacity: 0.6;
}

.o-node {
    fill: #06121f;
    stroke: rgba(0, 203, 236, 0.3);
}

.o-node.is-on {
    fill: #0a2233;
    stroke: var(--accent);
    stroke-width: 1.5;
    filter: drop-shadow(0 0 10px rgba(0, 203, 236, 0.55));
}

.o-core {
    fill: rgba(0, 203, 236, 0.07);
    stroke: rgba(0, 203, 236, 0.5);
}

/* ---------- Services: supporting band ---------- */

.approach-strip-wrap {
    margin-top: 88px;
    padding-top: 64px;
    border-top: 1px solid var(--hair);
}

.approach-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-top: 36px;
}

.approach-strip li {
    position: relative;
    display: grid;
    gap: 8px;
    align-content: start;
}

.approach-strip li:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 18px;
    left: 52px;
    right: -20px;
    height: 1px;
    background: linear-gradient(90deg, var(--line-strong), transparent);
}

.approach-strip .num {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    margin-bottom: 12px;
    border-radius: 50%;
    border: 1px solid var(--accent);
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--accent);
}

.approach-strip h3 {
    font-size: 18px;
}

/* ---------- Services: responsive ---------- */

@media (max-width: 1199px) {
    .hero--services h1 {
        font-size: 50px;
    }

    .explorer {
        grid-template-columns: 340px minmax(0, 1fr);
    }

    .svc-panel {
        grid-template-columns: 1fr;
        padding: 40px;
    }

    .svc-panel .orbit {
        display: none;
    }
}

@media (max-width: 991px) {
    .hero--services .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero--services h1 {
        font-size: 44px;
        max-width: 13em;
    }

    .hero-rings {
        right: -360px;
        top: 30%;
    }

    .hero-areas {
        display: grid;
        grid-template-columns: 1fr 1fr;
        column-gap: 32px;
        padding: 20px 24px;
    }

    .hero-areas li:nth-last-child(2) {
        border-bottom: 0;
    }

    /* Tablet: names only in the control column; the panel carries the detail. */
    .explorer {
        grid-template-columns: 260px minmax(0, 1fr);
        column-gap: 24px;
    }

    .svc-tab {
        grid-template-columns: 40px 1fr;
        gap: 12px;
        padding: 14px 16px 14px 14px;
    }

    .svc-tab .svc-icon {
        width: 40px;
        height: 40px;
    }

    .svc-tab .svc-icon img {
        width: 20px;
        height: 20px;
    }

    .svc-short {
        display: none;
    }

    .svc-name {
        font-size: 16px;
    }

    .svc-panel {
        padding: 32px;
    }

    .svc-panel h3 {
        font-size: 26px;
    }

    .approach-strip {
        grid-template-columns: 1fr 1fr;
        gap: 36px 40px;
    }

    .approach-strip li::after {
        display: none;
    }
}

@media (max-width: 767px) {
    .hero--services h1 {
        font-size: 36px;
    }

    .hero-rings {
        display: none;
    }

    .hero-areas {
        grid-template-columns: 1fr;
        padding: 8px 0 8px 20px;
    }

    .hero-areas li:nth-last-child(2) {
        border-bottom: 1px solid var(--hair);
    }

    .hero-areas li {
        font-size: 16px;
    }

    /* Phone: a disclosure list — the selected service opens in place under its own name. */
    .explorer {
        display: grid;
        grid-template-columns: 1fr;
        row-gap: 10px;
    }

    .svc-item {
        display: block;
    }

    .svc-short {
        display: block;
    }

    .svc-tab {
        grid-template-columns: 44px 1fr;
    }

    .svc-item.is-active .svc-tab {
        border-radius: 12px 12px 0 0;
        box-shadow: none;
    }

    .svc-panel {
        grid-row: auto;
        padding: 24px 20px 28px;
        border-top: 0;
        border-color: var(--accent);
        border-radius: 0 0 12px 12px;
    }

    .svc-panel h3 {
        font-size: 22px;
    }

    .svc-panel p {
        font-size: 16px;
    }

    .svc-panel .actions .btn {
        width: 100%;
    }

    .approach-strip-wrap {
        margin-top: 56px;
        padding-top: 48px;
    }

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

    .approach-strip li {
        grid-template-columns: 36px 1fr;
        column-gap: 16px;
        row-gap: 4px;
    }

    .approach-strip .num {
        grid-row: 1 / span 2;
        margin: 0;
    }
}