/* --- Font Declarations --- */
@font-face {
    font-family: 'Outfit';
    src: url('fonts/Outfit-VariableFont_wght.ttf') format('truetype');
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Newsreader';
    src: url('fonts/Newsreader-Variable.woff2') format('woff2');
    font-weight: 400 500;
    font-style: normal;
    font-display: swap;
}

/* --- Brand Tokens --- */
:root {
    /* Pillars (from the logo) */
    --pillar-1: #2D3C59;
    --pillar-2: #B34233;
    --pillar-3: #FB8500;
    --pillar-1-on-dark: #6F86B0;

    /* The three stages of the model, matching the logo bars */
    --stage-1: var(--pillar-1);
    --stage-2: var(--pillar-2);
    --stage-3: var(--pillar-3);

    /* Surfaces */
    --ink: #0B1120;
    --ink-raised: #121A2E;
    --paper: #F4F5F7;

    /* Text */
    --text-on-dark: #FFFFFF;
    --text-muted-on-dark: #A3ABBD;
    --text-on-paper: #141A29;
    --text-muted-on-paper: #4F586B;

    --rule-on-dark: rgba(255, 255, 255, 0.16);
    --rule-on-paper: rgba(20, 26, 41, 0.14);

    --font-display: 'Newsreader', Georgia, 'Times New Roman', serif;
    --font-body: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --gutter: clamp(20px, 5vw, 56px);
    --max-width: 1240px;
    --header-height: 76px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    background-color: var(--ink);
    color: var(--text-on-paper);
    font-family: var(--font-body);
    font-size: 1.0625rem;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

a {
    color: inherit;
}

:focus-visible {
    outline: 2px solid var(--pillar-3);
    outline-offset: 3px;
}

.wrap {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

/* --- Shared elements --- */
.eyebrow {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    text-wrap: balance;
    color: var(--text-muted-on-paper);
}

.eyebrow::before {
    content: '';
    width: 28px;
    height: 2px;
    background: var(--pillar-2);
}

.eyebrow--light {
    color: var(--text-muted-on-dark);
}

.eyebrow--large {
    gap: 16px;
    font-size: 1rem;
    letter-spacing: 0.16em;
    color: var(--text-on-dark);
}

.eyebrow--large::before {
    width: 40px;
    height: 3px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 28px;
    border: 0;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    line-height: 1;
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.button__icon {
    flex: none;
    width: 20px;
    height: 20px;
    margin-right: 10px;
}

.button--primary {
    background: var(--pillar-1);
    color: var(--text-on-dark);
}

.button--primary:hover {
    background: #3B4E72;
}

/* --- Header --- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--ink);
    border-bottom: 1px solid var(--rule-on-dark);
}

.site-header__inner {
    display: flex;
    align-items: center;
    gap: 40px;
    width: 100%;
    max-width: var(--max-width);
    height: var(--header-height);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.site-header__brand {
    display: block;
    margin-right: auto;
}

.logo {
    width: 116px;
    height: auto;
}

.site-nav {
    display: flex;
    gap: 32px;
}

.site-nav__link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-muted-on-dark);
    text-decoration: none;
    transition: color 0.2s ease;
}

.site-nav__link:hover {
    color: var(--text-on-dark);
}

.menu-toggle {
    display: none;
    position: relative;
    width: 44px;
    height: 44px;
    margin-right: -10px;
    background: none;
    border: 0;
    color: var(--text-on-dark);
    cursor: pointer;
}

.menu-toggle__bar {
    position: absolute;
    left: 11px;
    right: 11px;
    height: 2px;
    background: currentColor;
    transition: top 0.2s ease, transform 0.2s ease;
}

.menu-toggle__bar:nth-child(1) { top: 17px; }
.menu-toggle__bar:nth-child(2) { top: 25px; }

.site-header.is-open .menu-toggle__bar:nth-child(1) {
    top: 21px;
    transform: rotate(45deg);
}

.site-header.is-open .menu-toggle__bar:nth-child(2) {
    top: 21px;
    transform: rotate(-45deg);
}

/* --- Hero --- */
.hero {
    background: var(--ink);
    color: var(--text-on-dark);
    padding: clamp(56px, 9vw, 120px) 0 clamp(64px, 9vw, 128px);
}

.hero__inner {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
    gap: clamp(40px, 6vw, 96px);
}

.hero__headline {
    margin-top: 28px;
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 4.7vw, 4.25rem);
    text-wrap: balance;
    font-weight: 400;
    line-height: 1.02;
    letter-spacing: -0.02em;
}

.hero__lede {
    max-width: 38rem;
    margin-top: 32px;
    font-size: 1.1875rem;
    color: var(--text-muted-on-dark);
}


/* --- Signature: pixels settle into a staircase --- */
.bars {
    width: 100%;
}

.bars__field {
    display: block;
    width: 100%;
    height: clamp(220px, 30vw, 380px);
    padding: 0;
    background: none;
    border: 0;
    border-bottom: 1px solid var(--rule-on-dark);
    cursor: pointer;
}

.bars__canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.bars__caption {
    margin-top: 14px;
    font-size: 0.875rem;
    color: var(--text-muted-on-dark);
}

/* --- Sections --- */
.section {
    padding: clamp(56px, 7vw, 96px) 0;
}

.section--paper {
    background: var(--paper);
    color: var(--text-on-paper);
}

.section--dark {
    --stage-1: var(--pillar-1-on-dark);
    background: var(--ink-raised);
    color: var(--text-on-dark);
}

.section__title {
    margin-top: 20px;
    max-width: 22ch;
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.8vw, 3.25rem);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -0.015em;
    text-wrap: balance;
}

.section__title--wide {
    max-width: 28ch;
}

.section__lede {
    max-width: 40rem;
    margin-top: 24px;
    font-size: 1.1875rem;
    color: var(--text-muted-on-paper);
}

.section__lede--light {
    color: var(--text-muted-on-dark);
}

/* --- The model (three stages) --- */
.focus {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(24px, 3vw, 48px);
    margin-top: clamp(40px, 6vw, 72px);
}

.focus__item {
    padding-top: 28px;
    border-top: 4px solid var(--stage-1);
}

.focus__item--2 { border-top-color: var(--stage-2); }
.focus__item--3 { border-top-color: var(--stage-3); }

.stage-glyph {
    display: block;
    width: 32px;
    height: 32px;
    margin-bottom: 22px;
    color: currentColor;
}

.stage-glyph rect {
    fill: currentColor;
    opacity: 0.16;
}

.stage-glyph--1 .b1 { fill: var(--stage-1); opacity: 1; }
.stage-glyph--2 .b2 { fill: var(--stage-2); opacity: 1; }
.stage-glyph--3 .b3 { fill: var(--stage-3); opacity: 1; }

.focus__title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 2.2vw, 1.875rem);
    font-weight: 400;
    line-height: 1.2;
}

.focus__text {
    margin-top: 16px;
    color: var(--text-muted-on-paper);
}

.section--dark .focus__text {
    color: var(--text-muted-on-dark);
}

.practice__note {
    margin-top: clamp(32px, 5vw, 56px);
    max-width: 40rem;
    font-size: 0.9375rem;
    color: var(--text-muted-on-paper);
}

.section--dark .practice__note {
    color: var(--text-muted-on-dark);
}

/* --- The model: three steps and a diagram --- */
.model__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(32px, 6vw, 96px);
    align-items: center;
}

.model__steps {
    margin-top: 32px;
    list-style: none;
}

.model__step {
    --stage-color: var(--stage-1);
    padding: 16px 0 18px 24px;
    border-left: 3px solid var(--stage-color);
}

.model__step--2 { --stage-color: var(--stage-2); }
.model__step--3 { --stage-color: var(--stage-3); }

.model__title {
    font-family: var(--font-display);
    font-size: clamp(1.375rem, 2vw, 1.75rem);
    font-weight: 400;
    line-height: 1.2;
}

.model__text {
    display: grid;
    grid-template-rows: 1fr;
}

.model__text-inner {
    min-height: 0;
    overflow: hidden;
}

.model__text p {
    max-width: 30rem;
    padding-top: 10px;
    color: var(--text-muted-on-paper);
}

.model__figure svg {
    display: block;
    width: 100%;
    height: auto;
    max-height: calc(100vh - var(--header-height) - 96px);
}

/* Diagram states: data-stage says how far the story has got (1 = visibility, 2 = clarity, 3 = velocity). */
.mdl-base {
    stroke: var(--rule-on-paper);
    stroke-width: 1;
}

.mdl-mist {
    transition: opacity 0.5s ease;
}

.mdl-bar {
    fill: var(--stage-1);
    opacity: 0.14;
    transition: opacity 0.5s ease;
}

.mdl-bar--2 { fill: var(--stage-2); }
.mdl-bar--3 { fill: var(--stage-3); }

.mdl-label {
    fill: var(--text-muted-on-paper);
    opacity: 0.55;
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    transition: opacity 0.4s ease;
}

.model__figure[data-stage="1"] .mdl-mist,
.model__figure[data-stage="1"] .mdl-label--0 { opacity: 1; }
.model__figure[data-stage="2"] .mdl-mist { opacity: 0.4; }
.model__figure[data-stage="3"] .mdl-mist { opacity: 0.28; }
.model__figure[data-stage="2"] .mdl-label--0,
.model__figure[data-stage="3"] .mdl-label--0 { opacity: 0.55; }

.model__figure[data-stage="1"] .mdl-bar--1,
.model__figure[data-stage="2"] .mdl-bar--1,
.model__figure[data-stage="3"] .mdl-bar--1,
.model__figure[data-stage="2"] .mdl-bar--2,
.model__figure[data-stage="3"] .mdl-bar--2,
.model__figure[data-stage="3"] .mdl-bar--3 { opacity: 1; }

.model__figure[data-stage="1"] .mdl-label--1,
.model__figure[data-stage="2"] .mdl-label--1,
.model__figure[data-stage="3"] .mdl-label--1,
.model__figure[data-stage="2"] .mdl-label--2,
.model__figure[data-stage="3"] .mdl-label--2,
.model__figure[data-stage="3"] .mdl-label--3 { opacity: 1; fill: var(--text-on-paper); }

/* Scroll-linked mode: the section stays in place while the story advances. */
.model.is-scroll {
    padding: 0;
}

.model.is-scroll .model__sticky {
    position: sticky;
    top: var(--header-height);
    display: flex;
    align-items: center;
    height: calc(100vh - var(--header-height));
}

.model.is-scroll .model__sticky > .wrap {
    padding-top: 8px;
    padding-bottom: 8px;
}

.model.is-scroll .model__step {
    opacity: 0.4;
    transition: opacity 0.4s ease;
}

.model.is-scroll .model__step.is-active {
    opacity: 1;
}

.model.is-scroll .model__text {
    transition: grid-template-rows 0.4s ease;
}

.model.is-scroll .model__step:not(.is-active) .model__text {
    grid-template-rows: 0fr;
}

/* --- Approach --- */
.approach__head {
    max-width: 46rem;
}

.approach__steps {
    margin-top: clamp(40px, 5vw, 64px);
}

/* Four steps in one row, read left to right; one continuous line runs across the top. */
.steps {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    list-style: none;
}

.steps__item {
    position: relative;
    padding: 32px clamp(20px, 2.4vw, 36px) 0 0;
    border-top: 1px solid var(--rule-on-dark);
}

.steps__item::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 0;
    width: 56px;
    height: 4px;
    background: var(--text-on-dark);
}

.steps__title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 2.6vw, 2.25rem);
    font-weight: 400;
    line-height: 1.1;
}

.steps__text {
    max-width: 22rem;
    margin-top: 12px;
    color: var(--text-muted-on-dark);
}



/* Divider only where two light sections meet */
.section--paper + .section--paper {
    border-top: 1px solid var(--rule-on-paper);
}

/* --- Where visibility matters --- */
.uses__sub {
    margin-bottom: 20px;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted-on-paper);
}

.uses__list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    list-style: none;
}

.uses__question {
    font-family: var(--font-display);
    font-size: 1.3125rem;
    line-height: 1.3;
}

.uses__text {
    margin-top: 10px;
    font-size: 1rem;
    color: var(--text-muted-on-paper);
}

/* Tabs. Without scripting every area is shown, stacked. */
.where__tabs {
    display: none;
}

.where.is-enhanced .where__tabs {
    position: relative;
    display: flex;
    gap: clamp(20px, 3vw, 44px);
    margin-top: 36px;
    border-bottom: 1px solid var(--rule-on-paper);
}

.where__tab {
    flex: none;
    position: relative;
    margin-bottom: -1px;
    padding: 14px 0 17px;
    background: none;
    border: 0;
    cursor: pointer;
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 2vw, 1.625rem);
    line-height: 1.1;
    color: var(--text-muted-on-paper);
    transition: color 0.2s ease;
}

.where__tab:hover,
.where__tab[aria-selected="true"] {
    color: var(--text-on-paper);
}

.where__tab[aria-selected="true"]::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 3px;
    background: var(--pillar-2);
}

/* All panels share one grid cell, so the section keeps the tallest height and the page never jumps. */
.where.is-enhanced .where__panels {
    display: grid;
    margin-top: 36px;
}

.where.is-enhanced .where__panel {
    grid-area: 1 / 1;
    transition: opacity 0.3s ease, visibility 0s;
}

.where.is-enhanced .where__panel[hidden] {
    display: block;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.3s ease, visibility 0s linear 0.3s;
}

/* Phones, tablets and plain-tab mode: size the section to the open tab, so short tabs leave no empty space below. */
.where.is-enhanced:not(.is-scroll) .where__panels {
    display: block;
}

.where.is-enhanced:not(.is-scroll) .where__panel[hidden] {
    display: none;
}

.where.is-enhanced:not(.is-scroll) .where__panel:not([hidden]) {
    animation: where-in 0.3s ease;
}

@keyframes where-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* The area headings stay in the page for search engines and screen readers; the tabs act as the visible labels. */
.where.is-enhanced .where__title {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.where:not(.is-enhanced) .where__panel {
    padding: 40px 0;
    border-top: 1px solid var(--rule-on-paper);
}

.where:not(.is-enhanced) .where__panel:first-child {
    margin-top: 44px;
}

.where__title {
    margin-bottom: 28px;
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 2.8vw, 2.25rem);
    font-weight: 400;
    line-height: 1.1;
}

.where__cols {
    display: grid;
    gap: clamp(24px, 3.5vw, 56px);
}

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

.where__cols--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.where__cols--1 .where__group {
    grid-column: 1 / -1;
}

.where__cols--1 .where__group .uses__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(24px, 3.5vw, 56px);
}

/* Scroll-linked mode: the section stays in place while its content advances as you scroll. */
.where.is-scroll {
    padding: 0;
}

.where.is-scroll .where__sticky {
    position: sticky;
    top: var(--header-height);
    display: flex;
    align-items: center;
    height: calc(100vh - var(--header-height));
}

.where.is-scroll .where__sticky > .wrap {
    padding-top: 8px;
    padding-bottom: 8px;
}

/* --- The challenge --- */
.stakes {
    padding: clamp(56px, 8vw, 104px) 0;
}

.stakes__statement {
    max-width: 32ch;
    margin-top: 28px;
    font-family: var(--font-display);
    font-size: clamp(1.875rem, 3.6vw, 3.25rem);
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -0.015em;
    text-wrap: balance;
}

.stakes__text {
    max-width: 40rem;
    margin-top: 32px;
    font-size: 1.1875rem;
    color: var(--text-muted-on-dark);
}

/* --- Perspectives --- */
.perspectives__head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 24px;
}

.perspectives-nav {
    display: flex;
    gap: 12px;
    flex-shrink: 0;
}

.perspectives-nav__btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--rule-on-dark);
    border-radius: 50%;
    background: transparent;
    color: inherit;
    cursor: pointer;
    transition: border-color 0.2s ease, color 0.2s ease, opacity 0.2s ease;
}

.perspectives-nav__btn svg {
    width: 20px;
    height: 20px;
}

.perspectives-nav__btn:hover,
.perspectives-nav__btn:focus-visible {
    border-color: var(--pillar-3);
    color: var(--pillar-3);
}

.perspectives-nav__btn:disabled {
    opacity: 0.3;
    cursor: default;
    pointer-events: none;
}

.perspectives-rail {
    display: flex;
    gap: clamp(20px, 3vw, 32px);
    margin-top: clamp(40px, 6vw, 72px);
    padding-bottom: 4px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
}

.perspectives-rail::-webkit-scrollbar {
    display: none;
}

.perspective-card {
    display: flex;
    flex-direction: column;
    flex: 0 0 clamp(280px, 34vw, 400px);
    scroll-snap-align: start;
    padding: clamp(24px, 2.6vw, 32px);
    border: 1px solid var(--rule-on-dark);
    color: inherit;
    text-decoration: none;
    transition: border-color 0.2s ease;
}

.perspective-card:hover,
.perspective-card:focus-visible {
    border-color: var(--pillar-3);
}

.perspective-card__meta {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted-on-dark);
}

.perspective-card__title {
    margin-top: 20px;
    font-family: var(--font-display);
    font-size: clamp(1.375rem, 2vw, 1.625rem);
    font-weight: 400;
    line-height: 1.2;
}

.perspective-card__text {
    margin-top: 14px;
    color: var(--text-muted-on-dark);
}

.perspective-card__cta {
    display: inline-block;
    margin-top: auto;
    padding-top: 24px;
    padding-bottom: 3px;
    font-weight: 600;
    border-bottom: 1px solid currentColor;
    transition: color 0.2s ease;
}

.perspective-card__cta::after {
    content: ' \2192';
}

.perspective-card:hover .perspective-card__cta {
    color: var(--pillar-3);
}

/* --- Article page --- */
.article__cover {
    width: 100%;
    height: clamp(200px, 32vw, 420px);
    overflow: hidden;
    background: var(--ink);
}

.article__cover img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.article {
    padding: clamp(56px, 8vw, 104px) 0;
}

.article__inner {
    max-width: 44rem;
}

.article__title {
    margin-top: 20px;
    font-family: var(--font-display);
    font-size: clamp(2.25rem, 4.6vw, 3.75rem);
    font-weight: 400;
    line-height: 1.08;
    letter-spacing: -0.02em;
    text-wrap: balance;
}

.article__byline {
    margin-top: 24px;
    font-size: 0.9375rem;
    color: var(--text-muted-on-paper);
}

.article__standfirst {
    margin-top: 32px;
    font-family: var(--font-display);
    font-size: clamp(1.375rem, 2.2vw, 1.75rem);
    line-height: 1.4;
}

.article__body {
    margin-top: 48px;
    padding-top: 16px;
    border-top: 1px solid var(--rule-on-paper);
}

.article__body p {
    margin-top: 1.25em;
    font-size: 1.125rem;
    line-height: 1.75;
}

.article__body h2 {
    margin-top: 2.2em;
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 2.6vw, 1.875rem);
    font-weight: 400;
    line-height: 1.2;
}

.article__body ol {
    margin-top: 1.25em;
    padding-left: 1.4em;
    font-size: 1.125rem;
    line-height: 1.75;
}

.article__body li {
    margin-top: 0.8em;
    padding-left: 0.3em;
}

.article__body .article__close {
    margin-top: 2.5em;
    padding-left: 24px;
    border-left: 4px solid var(--pillar-2);
    font-family: var(--font-display);
    font-size: clamp(1.375rem, 2.4vw, 1.625rem);
    line-height: 1.35;
}

/* --- About --- */
.about__inner {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
    gap: clamp(40px, 7vw, 112px);
}

.about__lead {
    margin-top: 40px;
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 2.6vw, 2rem);
    line-height: 1.25;
}

.about__story p {
    max-width: 36rem;
    color: var(--text-muted-on-paper);
}

.about__story .about__lead {
    color: var(--text-on-paper);
}

.about__story p + p {
    margin-top: 1.1em;
}

.beliefs__label {
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted-on-paper);
}

.beliefs__list {
    margin-top: 20px;
    list-style: none;
}

.beliefs__item {
    padding: 28px 0 32px;
    border-top: 1px solid var(--rule-on-paper);
}

.beliefs__title {
    font-family: var(--font-display);
    font-size: clamp(1.375rem, 2.2vw, 1.75rem);
    line-height: 1.2;
}

.beliefs__text {
    max-width: 26rem;
    margin-top: 10px;
    color: var(--text-muted-on-paper);
}

/* --- Contact --- */
.contact__inner {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: clamp(28px, 4vw, 44px);
}

.contact__title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5.2vw, 4.5rem);
    font-weight: 400;
    line-height: 1.02;
    letter-spacing: -0.02em;
}

/* --- Footer --- */
.site-footer {
    background: var(--ink);
    color: var(--text-muted-on-dark);
    padding: 24px 0;
    border-top: 1px solid var(--rule-on-dark);
}

.site-footer__legal {
    font-size: 0.875rem;
}

/* --- Mid-size screens: steps in two rows --- */
@media (min-width: 961px) and (max-width: 1100px) {
    .steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .steps__item {
        padding-bottom: 32px;
    }
}

/* --- Tablet --- */
@media (max-width: 960px) {
    .hero__inner {
        grid-template-columns: 1fr;
    }

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

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

    .steps__item {
        padding: 28px 0 28px;
    }

    .hero__inner {
        align-items: start;
    }

    .focus {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .where.is-enhanced .where__tabs {
        overflow-x: auto;
        overflow-y: hidden;
    }

    .where__cols--1,
    .where__cols--2,
    .where__cols--3,
    .where__cols--1 .where__group .uses__list {
        grid-template-columns: 1fr;
    }

    .perspective-card {
        flex-basis: 82vw;
    }

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

    .menu-toggle {
        display: block;
    }

    .site-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        padding: 0 var(--gutter) 8px;
        background: var(--ink);
        border-bottom: 1px solid var(--rule-on-dark);
    }

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

    .site-nav__link {
        padding: 16px 0;
        font-size: 1.0625rem;
        border-top: 1px solid var(--rule-on-dark);
    }

    .site-nav__link:first-child {
        border-top: 0;
    }
}

/* --- Mobile --- */
@media (max-width: 600px) {
    :root {
        --header-height: 64px;
    }

    .eyebrow--large {
        gap: 12px;
        font-size: 0.875rem;
        letter-spacing: 0.12em;
    }

    .eyebrow--large::before {
        width: 28px;
    }

    .logo {
        width: 94px;
    }

    .site-header__inner {
        gap: 16px;
    }

    .button {
        width: 100%;
    }
}

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

    .mdl-mist,
    .mdl-bar,
    .mdl-label,
    .menu-toggle__bar,
    .where.is-enhanced .where__panel,
    .where.is-enhanced .where__panel[hidden] {
        transition: none;
        animation: none;
    }
}