/* =========================================
   MakeBig Digital Solutions — site styles
   =========================================

   Colour palette (use the tokens, never raw hex, in page styles)

   Ink (dark surfaces + text)
     --ink-900  #16181D   header, footer, dark bands, primary text
     --ink-800  #1F2228   raised surface on dark (code panel)
     --ink-700  #2C3038   borders on dark
     --ink-600  #4B5059   secondary text on light      (7.4:1 on paper)
     --ink-500  #6B7079   muted text on light          (4.6:1 on paper)
     --ink-300  #A3A7AE   secondary text on dark       (7.3:1 on ink-900)
     --ink-200  #C9CCD1   body text on dark

   Paper (light surfaces)
     --paper     #F7F5F0  page background
     --paper-2   #EFECE5  alternate section background
     --white     #FFFFFF  forms, panels
     --line      #E2DED5  hairlines on light

   Brand orange (from the logo)
     --brand-500 #EE6A1B  buttons, marks, numbers. Text on it is ink-900 (5.7:1)
     --brand-600 #D45A12  button hover
     --brand-700 #A8450D  links / orange text on light (5.5:1 on paper)
     --brand-300 #F3A26B  orange text on dark          (8.6:1 on ink-900)
     --brand-100 #FBE8DA  subtle highlight

   Status
     --ok  #1F7A4D   --err #B42318

   Type: IBM Plex Sans for everything, IBM Plex Mono for code and small labels.
   ========================================= */

:root {
    --ink-900: #16181D;
    --ink-800: #1F2228;
    --ink-700: #2C3038;
    --ink-600: #4B5059;
    --ink-500: #6B7079;
    --ink-300: #A3A7AE;
    --ink-200: #C9CCD1;

    --paper: #F7F5F0;
    --paper-2: #EFECE5;
    --white: #FFFFFF;
    --line: #E2DED5;

    --brand-500: #EE6A1B;
    --brand-600: #D45A12;
    --brand-700: #A8450D;
    --brand-300: #F3A26B;
    --brand-100: #FBE8DA;

    --ok: #1F7A4D;
    --err: #B42318;

    --font: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

    --radius: 6px;
    --max-width: 1160px;
    --gutter: 24px;
    --header-h: 68px;
}

/* --- Reset --- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
    font-family: var(--font);
    font-size: 17px;
    line-height: 1.6;
    background: var(--paper);
    color: var(--ink-900);
}

a {
    color: var(--brand-700);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

a:hover {
    color: var(--ink-900);
}

img,
svg {
    display: block;
    max-width: 100%;
}

ul,
ol {
    list-style: none;
}

:focus-visible {
    outline: 2px solid var(--brand-500);
    outline-offset: 2px;
}

.skip-link {
    position: absolute;
    left: 16px;
    top: -48px;
    z-index: 2000;
    padding: 8px 14px;
    background: var(--brand-500);
    color: var(--ink-900);
    font-weight: 600;
    text-decoration: none;
}

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

/* --- Layout --- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.section {
    padding: 96px 0;
}

.section-alt {
    background: var(--paper-2);
}

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

/* Two-column section: heading on the left, content on the right */
.split {
    display: grid;
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 48px;
}

.split-head {
    position: sticky;
    top: calc(var(--header-h) + 32px);
    align-self: start;
}

/* --- Type --- */
.eyebrow {
    display: block;
    font-family: var(--mono);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--brand-700);
    margin-bottom: 14px;
}

h1,
h2,
h3,
h4 {
    font-weight: 600;
    letter-spacing: -0.015em;
    line-height: 1.2;
}

.h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    margin-bottom: 16px;
}

.lead {
    font-size: 1.15rem;
    color: var(--ink-600);
    max-width: 62ch;
}

.muted {
    color: var(--ink-500);
}

.prose p {
    color: var(--ink-600);
    margin-bottom: 18px;
    max-width: 66ch;
}

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

.prose strong {
    color: var(--ink-900);
    font-weight: 600;
}

code,
.mono {
    font-family: var(--mono);
    font-size: 0.9em;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 13px 22px;
    font-family: var(--font);
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.2;
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.15s, border-color 0.15s, color 0.15s;
}

.btn-primary {
    background: var(--brand-500);
    color: var(--ink-900);
}

.btn-primary:hover {
    background: var(--brand-600);
    color: var(--ink-900);
}

.btn-outline {
    background: transparent;
    color: var(--ink-900);
    border-color: var(--ink-900);
}

.btn-outline:hover {
    background: var(--ink-900);
    color: var(--white);
}

.on-dark .btn-outline {
    color: var(--white);
    border-color: var(--ink-600);
}

.on-dark .btn-outline:hover {
    background: var(--white);
    border-color: var(--white);
    color: var(--ink-900);
}

.btn .arrow {
    transition: transform 0.15s;
}

.btn:hover .arrow {
    transform: translateX(3px);
}

.text-link {
    font-weight: 600;
    color: var(--ink-900);
    text-decoration: none;
    border-bottom: 2px solid var(--brand-500);
    padding-bottom: 2px;
}

.text-link:hover {
    color: var(--brand-700);
}

/* --- Header --- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-h);
    background: var(--ink-900);
    border-bottom: 1px solid var(--ink-700);
}

.header-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

.logo img {
    height: 38px;
    width: auto;
}

.nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav a {
    padding: 8px 14px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--ink-200);
    text-decoration: none;
    border-radius: var(--radius);
}

.nav a:hover {
    color: var(--white);
}

.nav a[aria-current="page"] {
    color: var(--white);
    box-shadow: inset 0 -2px 0 var(--brand-500);
    border-radius: 0;
}

.nav .nav-cta {
    margin-left: 12px;
    background: var(--brand-500);
    color: var(--ink-900);
    font-weight: 600;
}

.nav .nav-cta:hover {
    background: var(--brand-600);
    color: var(--ink-900);
}

.menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: 1px solid var(--ink-700);
    border-radius: var(--radius);
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--white);
    transition: transform 0.2s, opacity 0.2s;
}

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

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

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

/* --- Dark bands (home hero, CTA) --- */
.on-dark {
    background: var(--ink-900);
    color: var(--white);
}

.on-dark .eyebrow {
    color: var(--brand-300);
}

.on-dark .lead,
.on-dark p {
    color: var(--ink-300);
}

.on-dark a:not(.btn) {
    color: var(--white);
}

.on-dark a:not(.btn):hover {
    color: var(--brand-300);
}

/* --- Home hero --- */
.hero {
    padding: 88px 0 96px;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: center;
}

.hero h1 {
    font-size: clamp(2.2rem, 4.6vw, 3.4rem);
    letter-spacing: -0.025em;
    line-height: 1.1;
    margin-bottom: 22px;
}

.hero h1 em {
    font-style: normal;
    color: var(--brand-500);
}

.hero .lead {
    margin-bottom: 32px;
}

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

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 28px;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--ink-700);
    font-size: 0.9rem;
    color: var(--ink-300);
}

.hero-meta span::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    margin-right: 10px;
    vertical-align: middle;
    background: var(--brand-500);
}

/* Code panel (used in the hero and on the MCP page) */
.code-panel {
    background: var(--ink-800);
    border: 1px solid var(--ink-700);
    border-radius: var(--radius);
    overflow: hidden;
}

.code-panel-bar {
    display: flex;
    justify-content: space-between;
    padding: 10px 16px;
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--ink-300);
    border-bottom: 1px solid var(--ink-700);
}

.code-panel pre {
    margin: 0;
    padding: 18px 16px 20px;
    overflow-x: auto;
    font-family: var(--mono);
    font-size: 0.8rem;
    line-height: 1.7;
    color: var(--ink-200);
}

.code-panel .c { color: var(--ink-300); font-style: italic; }
.code-panel .k { color: var(--brand-300); }
.code-panel .s { color: #9FD3A8; }
.code-panel .f { color: var(--white); }

.light-code {
    background: var(--white);
    border-color: var(--line);
}

.light-code .code-panel-bar {
    color: var(--ink-500);
    border-color: var(--line);
}

.light-code pre { color: var(--ink-900); }
.light-code .c { color: var(--ink-500); }
.light-code .k { color: var(--brand-700); }
.light-code .s { color: var(--ok); }
.light-code .f { color: var(--ink-900); font-weight: 600; }

/* --- Page header (inner pages) --- */
.page-header {
    padding: 64px 0 56px;
    border-bottom: 1px solid var(--line);
}

.page-header h1 {
    font-size: clamp(2rem, 4vw, 2.9rem);
    letter-spacing: -0.025em;
    line-height: 1.12;
    margin-bottom: 18px;
    max-width: 22ch;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
    font-size: 0.85rem;
    color: var(--ink-500);
}

.breadcrumb a {
    color: var(--ink-600);
    text-decoration: none;
}

.breadcrumb a:hover {
    color: var(--brand-700);
    text-decoration: underline;
}

/* --- Service index (numbered rows) --- */
.service-list {
    border-top: 1px solid var(--ink-900);
}

.service-row {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr) auto;
    gap: 20px;
    align-items: baseline;
    padding: 26px 0;
    border-bottom: 1px solid var(--line);
    color: var(--ink-900);
    text-decoration: none;
}

.service-row:hover {
    color: var(--ink-900);
}

.service-row:hover h3 {
    color: var(--brand-700);
}

.service-row .num {
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--brand-700);
}

.service-row h3 {
    font-size: 1.3rem;
    margin-bottom: 6px;
}

.service-row p {
    color: var(--ink-600);
    max-width: 60ch;
}

.service-row .go {
    font-size: 1.2rem;
    color: var(--ink-500);
    transition: transform 0.15s, color 0.15s;
}

.service-row:hover .go {
    color: var(--brand-700);
    transform: translateX(4px);
}

.tag-new {
    display: inline-block;
    margin-left: 10px;
    padding: 2px 7px;
    font-family: var(--mono);
    font-size: 0.7rem;
    font-weight: 500;
    vertical-align: middle;
    color: var(--brand-700);
    background: var(--brand-100);
    border-radius: 3px;
}

/* --- AI / MCP feature block --- */
.feature-pair {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border: 1px solid var(--line);
    background: var(--white);
    border-radius: var(--radius);
}

.feature-pair > div {
    padding: 36px;
}

.feature-pair > div + div {
    border-left: 1px solid var(--line);
}

.feature-pair h3 {
    font-size: 1.35rem;
    margin-bottom: 12px;
}

.feature-pair > div > p {
    color: var(--ink-600);
    margin-bottom: 20px;
}

.feature-pair .text-link {
    display: inline-block;
    margin-top: 24px;
}

/* Bullet list with orange square markers */
.ticks li {
    position: relative;
    padding: 9px 0 9px 22px;
    border-top: 1px solid var(--line);
    color: var(--ink-600);
}

.ticks li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 19px;
    width: 7px;
    height: 7px;
    background: var(--brand-500);
}

.ticks li strong {
    color: var(--ink-900);
    font-weight: 600;
}

.note {
    margin-top: 40px;
    padding: 18px 22px;
    border-left: 3px solid var(--brand-500);
    background: var(--white);
    color: var(--ink-600);
    max-width: 75ch;
}

.note strong {
    color: var(--ink-900);
}

/* --- Process steps --- */
.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    counter-reset: step;
    border-top: 1px solid var(--ink-900);
}

.steps li {
    counter-increment: step;
    padding: 24px 24px 0 0;
}

.steps li::before {
    content: "0" counter(step);
    display: block;
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--brand-700);
    margin-bottom: 12px;
}

.steps h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.steps p {
    font-size: 0.95rem;
    color: var(--ink-600);
}

/* --- Engagement models --- */
.models {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.model {
    padding: 28px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.model h3 {
    font-size: 1.15rem;
    margin-bottom: 4px;
}

.model .fit {
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--brand-700);
    margin-bottom: 14px;
}

.model p {
    font-size: 0.95rem;
    color: var(--ink-600);
}

/* --- Stack table --- */
.stack {
    border-top: 1px solid var(--ink-900);
}

.stack-row {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 24px;
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
}

.stack-row dt {
    font-weight: 600;
}

.stack-row dd {
    color: var(--ink-600);
}

/* --- Service detail page --- */
.offer-list {
    border-top: 1px solid var(--ink-900);
}

.offer {
    display: grid;
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 32px;
    padding: 28px 0;
    border-bottom: 1px solid var(--line);
}

.offer h3 {
    font-size: 1.2rem;
}

.offer p {
    color: var(--ink-600);
    margin-bottom: 12px;
}

.tools {
    font-family: var(--mono);
    font-size: 0.8rem;
    color: var(--ink-500);
}

.columns-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.columns-2 h3 {
    font-size: 1.15rem;
    margin-bottom: 14px;
}

/* --- FAQ --- */
.faq {
    border-top: 1px solid var(--ink-900);
}

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

.faq summary {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    padding: 20px 0;
    font-weight: 600;
    font-size: 1.05rem;
    cursor: pointer;
    list-style: none;
}

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

.faq summary::after {
    content: "+";
    font-family: var(--mono);
    font-weight: 400;
    color: var(--brand-700);
}

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

.faq details p {
    padding: 0 0 22px;
    color: var(--ink-600);
    max-width: 70ch;
}

/* --- CTA band --- */
.cta-band {
    padding: 80px 0;
}

.cta-band-inner {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: end;
}

.cta-band h2 {
    font-size: clamp(1.8rem, 3.4vw, 2.5rem);
    letter-spacing: -0.02em;
    margin-bottom: 14px;
}

.cta-direct {
    display: grid;
    gap: 10px;
    font-size: 0.95rem;
}

.cta-direct .label {
    display: inline-block;
    width: 84px;
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--ink-300);
}

.cta-band .btn {
    margin-top: 22px;
}

/* --- About --- */
.founder {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 20px;
    margin-top: 40px;
    padding-top: 28px;
    border-top: 1px solid var(--line);
}

.founder-mark {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ink-900);
    color: var(--brand-500);
    font-size: 1.6rem;
    font-weight: 600;
    border-radius: var(--radius);
}

.founder h3 {
    font-size: 1.15rem;
}

.founder .role {
    font-size: 0.9rem;
    color: var(--brand-700);
    margin-bottom: 8px;
}

.founder p {
    color: var(--ink-600);
    font-size: 0.95rem;
}

.principles {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 48px;
}

.principles li {
    padding: 22px 0;
    border-top: 1px solid var(--line);
}

.principles h3 {
    font-size: 1.05rem;
    margin-bottom: 6px;
}

.principles p {
    color: var(--ink-600);
    font-size: 0.95rem;
}

/* --- Contact --- */
.contact-grid {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 56px;
    align-items: start;
}

.form {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 32px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.field {
    margin-bottom: 18px;
}

.field label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.field .opt {
    font-weight: 400;
    color: var(--ink-500);
}

.input {
    width: 100%;
    padding: 11px 13px;
    font-family: var(--font);
    font-size: 1rem;
    color: var(--ink-900);
    background: var(--white);
    border: 1px solid #CFCAC0;
    border-radius: var(--radius);
}

.input:focus {
    outline: none;
    border-color: var(--ink-900);
    box-shadow: 0 0 0 3px var(--brand-100);
}

.input::placeholder {
    color: var(--ink-500);
}

textarea.input {
    min-height: 150px;
    resize: vertical;
}

select.input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 16 16'%3E%3Cpath fill='%2316181D' d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
    cursor: pointer;
}

.form .btn {
    width: 100%;
    justify-content: center;
}

.form-note {
    margin-top: 14px;
    font-size: 0.85rem;
    color: var(--ink-500);
}

.form-message {
    display: none;
    margin-top: 16px;
    padding: 12px 14px;
    font-size: 0.95rem;
    border-radius: var(--radius);
}

.form-message.success {
    display: block;
    color: var(--ok);
    background: #E7F3EC;
    border: 1px solid #B9DCC7;
}

.form-message.error {
    display: block;
    color: var(--err);
    background: #FBEAE8;
    border: 1px solid #F0C3BE;
}

.contact-side h2 {
    font-size: 1.1rem;
    margin-bottom: 14px;
}

.contact-side dl {
    border-top: 1px solid var(--ink-900);
    margin-bottom: 40px;
}

.contact-side dl div {
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
}

.contact-side dt {
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--ink-500);
    margin-bottom: 2px;
}

.contact-side ol {
    counter-reset: next;
}

.contact-side ol li {
    counter-increment: next;
    position: relative;
    padding: 0 0 14px 30px;
    color: var(--ink-600);
    font-size: 0.95rem;
}

.contact-side ol li::before {
    content: counter(next);
    position: absolute;
    left: 0;
    top: 1px;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--mono);
    font-size: 0.75rem;
    background: var(--ink-900);
    color: var(--white);
    border-radius: 3px;
}

/* --- Footer --- */
.site-footer {
    background: var(--ink-900);
    border-top: 1px solid var(--ink-700);
    color: var(--ink-300);
    padding: 64px 0 28px;
    font-size: 0.95rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: minmax(0, 5fr) repeat(3, minmax(0, 2fr));
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--ink-700);
}

.footer-grid img {
    height: 40px;
    width: auto;
    margin-bottom: 16px;
}

.footer-grid p {
    max-width: 36ch;
}

.footer-grid h4 {
    font-family: var(--mono);
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0;
    color: var(--ink-300);
    margin-bottom: 14px;
}

.footer-grid ul li {
    margin-bottom: 8px;
}

.footer-grid a {
    color: var(--ink-200);
    text-decoration: none;
}

.footer-grid a:hover {
    color: var(--brand-300);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding-top: 24px;
    font-size: 0.85rem;
}

/* --- Brand assets page --- */
.swatches {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 16px;
}

.swatch {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--white);
}

.swatch-chip {
    height: 72px;
}

.swatch-info {
    padding: 10px 12px;
    font-size: 0.85rem;
}

.swatch-info b {
    display: block;
    font-weight: 600;
}

.swatch-info span {
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--ink-500);
}

.logo-tiles {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.logo-tile {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 28px;
    border-radius: var(--radius);
    border: 1px solid var(--line);
}

.logo-tile img {
    height: 72px;
    width: auto;
    object-fit: contain;
    object-position: left center;
}

.logo-tile.dark {
    background: var(--ink-900);
    border-color: var(--ink-900);
    color: var(--ink-300);
}

.logo-tile.light {
    background: var(--white);
    color: var(--ink-600);
}

/* --- Responsive --- */
@media (max-width: 960px) {
    .hero-grid,
    .split,
    .cta-band-inner,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .split {
        gap: 28px;
    }

    .split-head {
        position: static;
    }

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

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

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

    .footer-grid > div:first-child {
        grid-column: 1 / -1;
    }
}

@media (max-width: 820px) {
    .menu-toggle {
        display: inline-flex;
    }

    .nav {
        display: none;
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 8px var(--gutter) 20px;
        background: var(--ink-900);
        border-bottom: 1px solid var(--ink-700);
    }

    .nav.open {
        display: flex;
    }

    .nav a {
        padding: 14px 0;
        border-bottom: 1px solid var(--ink-700);
        border-radius: 0;
    }

    .nav a[aria-current="page"] {
        box-shadow: inset 3px 0 0 var(--brand-500);
        padding-left: 12px;
    }

    .nav .nav-cta {
        margin: 16px 0 0;
        text-align: center;
        border-radius: var(--radius);
        border-bottom: 0;
    }
}

@media (max-width: 720px) {
    :root {
        --gutter: 16px;
    }

    body {
        font-size: 16px;
    }

    .section {
        padding: 64px 0;
    }

    .hero {
        padding: 56px 0 64px;
    }

    .feature-pair,
    .columns-2,
    .principles,
    .logo-tiles,
    .form-row {
        grid-template-columns: 1fr;
    }

    .feature-pair > div {
        padding: 26px 22px;
    }

    .feature-pair > div + div {
        border-left: 0;
        border-top: 1px solid var(--line);
    }

    .offer {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .stack-row {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .service-row {
        grid-template-columns: 36px minmax(0, 1fr);
    }

    .service-row .go {
        display: none;
    }

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

    .form {
        padding: 22px 18px;
    }

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

    .logo img {
        height: 32px;
    }
}

/* --- Spacing utilities --- */
.mb-16 { margin-bottom: 16px; }
.mb-32 { margin-bottom: 32px; }
.mb-40 { margin-bottom: 40px; }

/* --- Brand logos --- */
.logos-band {
    padding: 48px 0 40px;
    background: var(--white);
    border-bottom: 1px solid var(--line);
}

.logos-title,
.works-with {
    font-family: var(--mono);
    font-size: 0.8rem;
    color: var(--ink-500);
    margin-bottom: 20px;
}

.logos-note {
    margin-top: 20px;
    font-size: 0.8rem;
    color: var(--ink-500);
}

.logo-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
}

.logo-grid li,
.logo-row li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--ink-600);
}

.logo-grid li {
    padding: 16px 18px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.brand-icon {
    flex: none;
    width: 22px;
    height: 22px;
    background-color: currentColor;
    -webkit-mask: var(--icon) center / contain no-repeat;
    mask: var(--icon) center / contain no-repeat;
    transition: background-color 0.15s;
}

.logo-grid li:hover {
    color: var(--ink-900);
}

.logo-grid li:hover .brand-icon {
    background-color: var(--brand);
}

.works-with {
    margin: 32px 0 12px;
}

.logo-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 28px;
}

.logo-row .brand-icon {
    width: 20px;
    height: 20px;
    background-color: var(--brand);
}

@media (max-width: 960px) {
    .logo-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 720px) {
    .logo-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.was-validated .input:invalid {
    border-color: var(--err);
}