:root {
    --ink: #111827;
    --navy: #1f4e79;
    --navy-dark: #173a5c;
    --copper: #ad5735;
    --copper-soft: #f1ddd3;
    --text: #263241;
    --muted: #586069;
    --line: #d7dee8;
    --line-strong: #b8c6d6;
    --wash: #f2f5f9;
    --paper: #fbfaf6;
    --white: #ffffff;
    --max: 1120px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-width: 320px;
    background: var(--paper);
    color: var(--text);
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 17px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

a {
    color: inherit;
}

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

.site-nav {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(251, 250, 246, 0.96);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(16px);
}

.nav-inner,
.section-inner,
.footer-inner {
    width: min(var(--max), calc(100% - 40px));
    margin: 0 auto;
}

.nav-inner {
    min-height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--ink);
    font-weight: 800;
    text-decoration: none;
    white-space: nowrap;
}

.brand-mark {
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    border: 1px solid var(--line-strong);
    border-radius: 6px;
    color: var(--copper);
    font-size: 0.72rem;
    letter-spacing: -0.03em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
    list-style: none;
}

.nav-links a {
    color: var(--muted);
    font-size: 0.84rem;
    font-weight: 700;
    text-decoration: none;
}

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

.nav-cta,
.button {
    display: inline-flex;
    min-height: 46px;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
    border: 1px solid var(--navy);
    border-radius: 6px;
    background: var(--navy);
    color: var(--white);
    font-size: 0.88rem;
    font-weight: 800;
    text-decoration: none;
}

.nav-cta:hover,
.button:hover {
    background: var(--navy-dark);
}

.button.secondary {
    background: transparent;
    color: var(--navy);
}

.button.secondary:hover {
    background: var(--wash);
}

.hero {
    padding: 108px 0 88px;
    border-bottom: 1px solid var(--line);
}

.breadcrumbs {
    margin-bottom: 30px;
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.breadcrumbs a {
    color: var(--navy);
    text-decoration: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.65fr);
    gap: 72px;
    align-items: start;
}

.eyebrow,
.section-label {
    color: var(--copper);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

h1,
h2,
h3 {
    color: var(--ink);
    line-height: 1.08;
    letter-spacing: -0.035em;
}

h1 {
    max-width: 820px;
    margin: 16px 0 24px;
    font-size: clamp(2.8rem, 6vw, 5.3rem);
}

.hero-copy {
    max-width: 760px;
    color: var(--muted);
    font-size: clamp(1.08rem, 2vw, 1.32rem);
    line-height: 1.55;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}

.answer-card {
    padding: 28px;
    border: 1px solid var(--line-strong);
    border-top: 5px solid var(--copper);
    background: var(--white);
}

.answer-card h2 {
    margin: 10px 0 16px;
    font-size: 1.5rem;
}

.answer-card p,
.answer-card li {
    color: var(--muted);
    font-size: 0.94rem;
}

.answer-card ul,
.check-list {
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}

.answer-card li,
.check-list li {
    position: relative;
    padding: 11px 0 11px 20px;
    border-top: 1px solid var(--line);
}

.answer-card li::before,
.check-list li::before {
    content: "";
    position: absolute;
    top: 19px;
    left: 0;
    width: 7px;
    height: 7px;
    background: var(--copper);
}

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

.proof-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.proof-item {
    min-height: 128px;
    padding: 26px;
    border-right: 1px solid var(--line);
}

.proof-item:last-child {
    border-right: 0;
}

.proof-item strong {
    display: block;
    margin-bottom: 6px;
    color: var(--navy);
    font-size: 1.28rem;
}

.proof-item span {
    color: var(--muted);
    font-size: 0.82rem;
}

.section {
    padding: 92px 0;
}

.section.tint {
    background: var(--wash);
}

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

.section.dark h2,
.section.dark h3 {
    color: var(--white);
}

.section.dark p,
.section.dark li {
    color: #ced9d6;
}

.section-head {
    display: grid;
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 50px;
    margin-bottom: 44px;
}

.section-title {
    max-width: 850px;
    font-size: clamp(2rem, 4vw, 3.45rem);
}

.section-copy {
    max-width: 780px;
    margin-top: 18px;
    color: var(--muted);
    font-size: 1.04rem;
}

.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--line-strong);
    border-left: 1px solid var(--line-strong);
}

.card {
    min-height: 260px;
    padding: 28px;
    border-right: 1px solid var(--line-strong);
    border-bottom: 1px solid var(--line-strong);
    background: var(--white);
}

.card-number {
    color: var(--copper);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.12em;
}

.card h3 {
    margin: 38px 0 14px;
    font-size: 1.35rem;
}

.card p {
    color: var(--muted);
    font-size: 0.94rem;
}

.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
}

.text-block h3 {
    margin-bottom: 16px;
    font-size: 1.65rem;
}

.text-block p + p {
    margin-top: 16px;
}

.check-list li {
    color: var(--text);
}

.evidence-card {
    padding: 38px;
    border: 1px solid var(--line-strong);
    background: var(--white);
}

.evidence-card h3 {
    margin: 12px 0 18px;
    font-size: 2rem;
}

.evidence-card p {
    color: var(--muted);
}

.evidence-meta {
    margin-top: 28px;
    padding-top: 22px;
    border-top: 1px solid var(--line);
    color: var(--navy);
    font-size: 0.84rem;
    font-weight: 800;
}

.process {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.process-step {
    padding: 28px 0;
    border-top: 3px solid var(--copper);
}

.process-step h3 {
    margin: 12px 0;
    font-size: 1.35rem;
}

.process-step p {
    color: var(--muted);
    font-size: 0.92rem;
}

.comparison {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
}

.comparison th,
.comparison td {
    padding: 18px;
    border: 1px solid var(--line-strong);
    text-align: left;
    vertical-align: top;
}

.comparison th {
    color: var(--ink);
    font-size: 0.84rem;
}

.comparison td {
    color: var(--muted);
    font-size: 0.9rem;
}

.faq-list {
    max-width: 860px;
    margin-left: auto;
}

.faq-item {
    padding: 26px 0;
    border-top: 1px solid var(--line-strong);
}

.faq-item:last-child {
    border-bottom: 1px solid var(--line-strong);
}

.faq-item h3 {
    margin-bottom: 12px;
    font-size: 1.25rem;
}

.faq-item p {
    color: var(--muted);
}

.cta-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 50px;
    align-items: end;
}

.cta-grid h2 {
    max-width: 780px;
    font-size: clamp(2.2rem, 5vw, 4.2rem);
}

.cta-grid p {
    max-width: 690px;
    margin-top: 18px;
}

footer {
    border-top: 1px solid var(--line);
    background: var(--paper);
}

.footer-inner {
    min-height: 104px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    color: var(--muted);
    font-size: 0.8rem;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
}

.footer-links a {
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--navy);
}

.byline {
    margin-top: 18px;
    color: var(--muted);
    font-size: 0.82rem;
}

.role-line {
    margin: 10px 0 20px;
    color: var(--navy);
    font-size: 0.88rem;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.timeline {
    border-top: 1px solid var(--line-strong);
}

.timeline-item {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 44px;
    padding: 30px 0;
    border-bottom: 1px solid var(--line-strong);
}

.timeline-label {
    color: var(--copper);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.timeline-item h3 {
    margin-bottom: 10px;
    font-size: 1.45rem;
}

.timeline-item p {
    max-width: 760px;
    color: var(--muted);
}

.evidence-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.evidence-grid .evidence-card {
    min-height: 100%;
}

.source-list {
    margin-top: 22px;
    padding-left: 20px;
}

.source-list li + li {
    margin-top: 10px;
}

.source-list a {
    color: var(--navy);
}

.source-note {
    margin-top: 20px;
    padding: 18px 20px;
    border-left: 4px solid var(--copper);
    background: var(--copper-soft);
    color: var(--text);
    font-size: 0.9rem;
}

.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 760px) minmax(230px, 1fr);
    gap: 72px;
    align-items: start;
}

.article-body > * + * {
    margin-top: 22px;
}

.article-body h2 {
    margin-top: 52px;
    font-size: clamp(1.8rem, 3vw, 2.5rem);
}

.article-body h3 {
    margin-top: 36px;
    font-size: 1.4rem;
}

.article-body p,
.article-body li {
    color: #34413c;
}

.article-body ul,
.article-body ol {
    padding-left: 24px;
}

.article-body li + li {
    margin-top: 10px;
}

.article-body blockquote {
    padding: 24px 0 24px 28px;
    border-left: 4px solid var(--copper);
    color: var(--ink);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.35rem;
    line-height: 1.45;
}

.article-aside {
    position: sticky;
    top: 96px;
    padding: 24px;
    border: 1px solid var(--line-strong);
    background: var(--white);
}

.article-aside h2 {
    margin-bottom: 14px;
    font-size: 1.25rem;
}

.article-aside p,
.article-aside li {
    color: var(--muted);
    font-size: 0.86rem;
}

.article-aside ul {
    margin-top: 16px;
    padding-left: 18px;
}

.article-aside li + li {
    margin-top: 9px;
}

.related-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--line-strong);
    border-left: 1px solid var(--line-strong);
}

.related-link {
    min-height: 190px;
    padding: 24px;
    border-right: 1px solid var(--line-strong);
    border-bottom: 1px solid var(--line-strong);
    background: var(--white);
    text-decoration: none;
}

.related-link:hover h3 {
    color: var(--navy);
}

.related-link h3 {
    margin: 24px 0 10px;
    font-size: 1.2rem;
}

.related-link p {
    color: var(--muted);
    font-size: 0.86rem;
}

@media (max-width: 900px) {
    .nav-links {
        display: none;
    }

    .hero {
        padding-top: 78px;
    }

    .hero-grid,
    .section-head,
    .two-col,
    .cta-grid,
    .article-layout {
        grid-template-columns: 1fr;
        gap: 34px;
    }

    .proof-grid,
    .cards,
    .process,
    .evidence-grid,
    .related-links {
        grid-template-columns: 1fr 1fr;
    }

    .article-aside {
        position: static;
    }

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

    .proof-item:nth-child(-n + 2) {
        border-bottom: 1px solid var(--line);
    }
}

@media (max-width: 620px) {
    body {
        font-size: 16px;
    }

    .nav-inner,
    .section-inner,
    .footer-inner {
        width: min(100% - 28px, var(--max));
    }

    .nav-cta {
        display: none;
    }

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

    h1 {
        font-size: clamp(2.5rem, 14vw, 4rem);
    }

    .hero-actions,
    .hero-actions .button {
        width: 100%;
    }

    .proof-grid,
    .cards,
    .process,
    .evidence-grid,
    .related-links {
        grid-template-columns: 1fr;
    }

    .timeline-item {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .proof-item {
        min-height: auto;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

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

    .section {
        padding: 66px 0;
    }

    .comparison-wrap {
        overflow-x: auto;
    }

    .comparison {
        min-width: 680px;
    }

    .footer-inner {
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        padding: 28px 0;
    }
}

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