:root {
    --ink: #102a43;
    --ink-soft: #526a7d;
    --teal: #087f73;
    --teal-dark: #075e57;
    --teal-pale: #e6f5f1;
    --lime: #d8ef69;
    --line: #d9e5e7;
    --paper: #ffffff;
    --mist: #f4f8f8;
    --navy: #082d33;
    --shadow: 0 18px 54px rgba(16, 42, 67, 0.10);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    color: var(--ink);
    background: var(--mist);
    font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

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

.research-notice {
    padding: 8px 18px;
    color: #d8f5ef;
    background: #072e33;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.05em;
    text-align: center;
    text-transform: uppercase;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    border-bottom: 1px solid rgba(16, 42, 67, 0.10);
    background: rgba(255,255,255,0.94);
    backdrop-filter: blur(18px);
}

.site-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: min(1240px, calc(100% - 36px));
    min-height: 72px;
    margin: 0 auto;
    gap: 28px;
}

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

.brand-logo-mark {
    display: block;
    width: 42px;
    height: 42px;
    flex: 0 0 auto;
    object-fit: contain;
}

.brand span:last-child { display: grid; gap: 1px; }
.brand strong { font-size: 17px; line-height: 1.05; }
.brand small { color: #6b8293; font-size: 10px; font-weight: 700; }

.site-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 26px;
    margin-left: auto;
}

.site-links a {
    position: relative;
    color: #456176;
    font-size: 13px;
    font-weight: 850;
    text-decoration: none;
}

.site-links a:hover,
.site-links a.active { color: var(--teal-dark); }

.site-links a.active:after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -12px;
    height: 2px;
    border-radius: 2px;
    background: var(--teal);
}

.nav-cta,
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 43px;
    padding: 10px 17px;
    border: 1px solid var(--teal);
    border-radius: 10px;
    color: #ffffff;
    background: var(--teal);
    font-size: 12px;
    font-weight: 900;
    text-decoration: none;
    transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.nav-cta:hover,
.button:hover {
    transform: translateY(-1px);
    background: var(--teal-dark);
    box-shadow: 0 10px 25px rgba(8,127,115,0.22);
}

.site-menu-toggle,
.site-mobile-menu { display: none; }

.site-menu-toggle {
    position: relative;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    margin-left: auto;
    padding: 0;
    border: 1px solid var(--line);
    border-radius: 11px;
    color: var(--ink);
    background: #ffffff;
    cursor: pointer;
}

.site-menu-toggle span {
    position: absolute;
    width: 20px;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    transition: transform 180ms ease, opacity 180ms ease;
}

.site-menu-toggle span:nth-child(1) { transform: translateY(-6px); }
.site-menu-toggle span:nth-child(3) { transform: translateY(6px); }
.site-menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: rotate(45deg); }
.site-menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.site-menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: rotate(-45deg); }
.site-mobile-menu[hidden] { display: none !important; }

.site-menu-toggle:focus-visible,
.site-mobile-menu a:focus-visible {
    outline: 3px solid rgba(8,127,115,0.24);
    outline-offset: 2px;
}

.button.secondary {
    color: var(--teal-dark);
    background: #ffffff;
}

.blog-hero {
    position: relative;
    overflow: hidden;
    padding: 82px 20px 74px;
    color: #ffffff;
    background:
        radial-gradient(circle at 15% 5%, rgba(216,239,105,0.18), transparent 29%),
        radial-gradient(circle at 86% 22%, rgba(34,207,180,0.18), transparent 26%),
        linear-gradient(135deg, #072d33, #0b5458 58%, #087f73);
}

.blog-hero:before,
.blog-hero:after {
    content: "";
    position: absolute;
    border: 1px solid rgba(255,255,255,0.10);
    border-radius: 50%;
}

.blog-hero:before { width: 360px; height: 360px; right: -170px; top: -170px; }
.blog-hero:after { width: 220px; height: 220px; left: -90px; bottom: -130px; }

.hero-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    width: min(1160px, 100%);
    margin: 0 auto;
    gap: 48px;
}

.eyebrow {
    margin: 0 0 15px;
    color: var(--lime);
    font-size: 11px;
    font-weight: 950;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.blog-hero h1,
.article-hero h1 {
    max-width: 850px;
    margin: 0;
    font-size: clamp(42px, 6vw, 72px);
    line-height: 0.98;
    letter-spacing: -0.045em;
}

.blog-hero p:not(.eyebrow) {
    max-width: 690px;
    margin: 22px 0 0;
    color: rgba(255,255,255,0.76);
    font-size: 17px;
    line-height: 1.7;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(95px, 1fr));
    gap: 10px;
}

.hero-stat {
    min-width: 110px;
    padding: 16px;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 14px;
    background: rgba(255,255,255,0.07);
}

.hero-stat strong { display: block; font-size: 27px; }
.hero-stat span { color: rgba(255,255,255,0.68); font-size: 10px; font-weight: 800; text-transform: uppercase; }

.blog-main {
    width: min(1240px, calc(100% - 36px));
    margin: 0 auto;
    padding: 58px 0 88px;
}

.blog-toolbar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(260px, 360px);
    align-items: end;
    gap: 24px;
    margin-bottom: 30px;
}

.filter-row { display: flex; flex-wrap: wrap; gap: 8px; }

.filter-button {
    min-height: 40px;
    padding: 8px 14px;
    border: 1px solid #cfdddf;
    border-radius: 999px;
    color: #4c6577;
    background: #ffffff;
    font-size: 11px;
    font-weight: 900;
    cursor: pointer;
}

.filter-button.active,
.filter-button:hover {
    color: #ffffff;
    border-color: var(--teal);
    background: var(--teal);
}

.blog-search { display: grid; gap: 6px; }
.blog-search span { color: #5b7386; font-size: 10px; font-weight: 900; letter-spacing: 0.08em; text-transform: uppercase; }
.blog-search input {
    width: 100%;
    min-height: 45px;
    padding: 11px 14px;
    border: 1px solid #cfdcdf;
    border-radius: 10px;
    color: var(--ink);
    background: #ffffff;
    font: inherit;
    font-size: 13px;
}

.blog-search input:focus { outline: 2px solid rgba(8,127,115,0.25); outline-offset: 2px; }

.article-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.article-card {
    display: flex;
    overflow: hidden;
    min-width: 0;
    flex-direction: column;
    border: 1px solid var(--line);
    border-radius: 17px;
    color: inherit;
    background: var(--paper);
    box-shadow: 0 13px 36px rgba(16,42,67,0.06);
    text-decoration: none;
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.article-card[data-hidden="1"] { display: none; }

.card-cover {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    background: #cfe5e2;
}

.card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 300ms ease;
}

.article-card:hover .card-cover img { transform: scale(1.035); }

.card-cover:after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(7,45,51,0.48), transparent 55%);
}

.category-pill {
    position: absolute;
    z-index: 2;
    left: 14px;
    top: 14px;
    padding: 6px 9px;
    border-radius: 999px;
    color: #173a3c;
    background: rgba(232,248,244,0.92);
    font-size: 9px;
    font-weight: 950;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.card-body {
    display: flex;
    min-height: 264px;
    flex: 1;
    flex-direction: column;
    padding: 20px;
}

.card-meta {
    display: flex;
    gap: 8px;
    color: #708597;
    font-size: 10px;
    font-weight: 800;
}

.card-body h2 {
    margin: 12px 0 10px;
    color: var(--ink);
    font-size: 20px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.card-body p {
    display: -webkit-box;
    overflow: hidden;
    margin: 0;
    color: var(--ink-soft);
    font-size: 13px;
    line-height: 1.6;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
}

.card-link {
    margin-top: auto;
    padding-top: 18px;
    color: var(--teal-dark);
    font-size: 11px;
    font-weight: 950;
    text-transform: uppercase;
}

.blog-more {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-top: 30px;
}

.result-count { color: #657c8e; font-size: 11px; font-weight: 800; }

.standards-strip {
    margin-top: 76px;
    padding: 36px;
    border-radius: 24px;
    color: #ffffff;
    background: linear-gradient(135deg, #0a373d, #0a625f);
}

.section-kicker { margin: 0 0 10px; color: var(--lime); font-size: 10px; font-weight: 950; letter-spacing: 0.12em; text-transform: uppercase; }
.standards-strip h2 { margin: 0; font-size: clamp(28px, 4vw, 44px); letter-spacing: -0.035em; }
.standards-strip > p { max-width: 690px; color: rgba(255,255,255,0.72); line-height: 1.65; }
.standards-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-top: 25px; }
.standard-card { padding: 18px; border: 1px solid rgba(255,255,255,0.13); border-radius: 14px; color: #ffffff; background: rgba(255,255,255,0.07); text-decoration: none; }
.standard-card small { color: var(--lime); font-size: 9px; font-weight: 950; text-transform: uppercase; }
.standard-card strong { display: block; margin-top: 8px; font-size: 15px; line-height: 1.3; }

.article-page { background: #f5f8f8; }

.article-hero {
    padding: 58px 20px 42px;
    background: #ffffff;
}

.article-hero-inner {
    width: min(1040px, 100%);
    margin: 0 auto;
}

.breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
    color: #6d8190;
    font-size: 11px;
    font-weight: 800;
}

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

.article-hero .category-label {
    display: inline-flex;
    margin-bottom: 16px;
    padding: 6px 10px;
    border-radius: 999px;
    color: var(--teal-dark);
    background: var(--teal-pale);
    font-size: 10px;
    font-weight: 950;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.article-hero h1 {
    max-width: 960px;
    color: var(--ink);
    font-size: clamp(38px, 6vw, 68px);
}

.article-deck {
    max-width: 820px;
    margin: 22px 0 0;
    color: var(--ink-soft);
    font-size: 18px;
    line-height: 1.68;
}

.article-byline {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 9px;
    margin-top: 24px;
    color: #6d8190;
    font-size: 11px;
    font-weight: 850;
}

.article-cover {
    position: relative;
    overflow: hidden;
    width: min(1120px, calc(100% - 36px));
    aspect-ratio: 16 / 7.3;
    margin: 0 auto;
    border-radius: 22px;
    background: #cfe5e2;
    box-shadow: var(--shadow);
}

.article-cover img { width: 100%; height: 100%; object-fit: cover; }
.article-cover:after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(5,40,46,0.26), transparent 65%); }

.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 250px;
    align-items: start;
    width: min(1040px, calc(100% - 36px));
    margin: 0 auto;
    padding: 62px 0 88px;
    gap: 54px;
}

.article-content {
    min-width: 0;
    color: #344f64;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 18px;
    line-height: 1.82;
}

.article-content h2,
.article-content h3 {
    color: var(--ink);
    font-family: Inter, ui-sans-serif, sans-serif;
    letter-spacing: -0.025em;
}

.article-content h2 { margin: 48px 0 15px; font-size: 30px; line-height: 1.2; }
.article-content h3 { margin: 26px 0 8px; font-size: 18px; }
.article-content p { margin: 0 0 20px; }

.lead-callout {
    padding: 22px 24px;
    border-left: 4px solid var(--teal);
    border-radius: 0 14px 14px 0;
    color: #24485a;
    background: #eaf5f2;
    font-size: 19px;
    font-weight: 700;
}

.question-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin: 24px 0 30px;
}

.question-card {
    padding: 17px;
    border: 1px solid var(--line);
    border-radius: 13px;
    color: #36566b;
    background: #ffffff;
    font-family: Inter, ui-sans-serif, sans-serif;
    font-size: 12px;
    font-weight: 800;
    line-height: 1.5;
}

.question-card span { display: block; margin-bottom: 8px; color: var(--teal); font-size: 10px; font-weight: 950; }

.verification-table {
    width: 100%;
    margin: 22px 0 30px;
    border-collapse: collapse;
    border: 1px solid var(--line);
    border-radius: 14px;
    overflow: hidden;
    background: #ffffff;
    font-family: Inter, ui-sans-serif, sans-serif;
    font-size: 12px;
    line-height: 1.5;
}

.verification-table th,
.verification-table td { padding: 13px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.verification-table th { width: 120px; color: var(--teal-dark); background: #f0f7f5; font-weight: 950; }
.verification-table tr:last-child th,
.verification-table tr:last-child td { border-bottom: 0; }

.research-warning {
    margin-top: 38px;
    padding: 22px;
    border: 1px solid #d9e5e7;
    border-radius: 14px;
    color: #5e7383;
    background: #ffffff;
    font-family: Inter, ui-sans-serif, sans-serif;
    font-size: 12px;
    line-height: 1.65;
}

.article-sidebar { position: sticky; top: 108px; display: grid; gap: 14px; }
.sidebar-card { padding: 19px; border: 1px solid var(--line); border-radius: 14px; background: #ffffff; }
.sidebar-card small { color: var(--teal); font-size: 9px; font-weight: 950; letter-spacing: 0.08em; text-transform: uppercase; }
.sidebar-card strong { display: block; margin: 8px 0; font-size: 16px; line-height: 1.25; }
.sidebar-card p { margin: 0 0 14px; color: #647a8b; font-size: 12px; line-height: 1.55; }
.sidebar-card a:not(.button) { color: var(--teal-dark); font-size: 11px; font-weight: 900; text-decoration: none; }

.related-section {
    padding: 68px 20px;
    border-top: 1px solid var(--line);
    background: #ffffff;
}

.related-inner { width: min(1040px, 100%); margin: 0 auto; }
.related-inner h2 { margin: 0 0 24px; font-size: 32px; letter-spacing: -0.03em; }
.related-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.related-card { padding: 20px; border: 1px solid var(--line); border-radius: 14px; color: inherit; background: #f9fbfb; text-decoration: none; }
.related-card small { color: var(--teal); font-size: 9px; font-weight: 950; text-transform: uppercase; }
.related-card strong { display: block; margin-top: 9px; font-size: 16px; line-height: 1.35; }

.site-footer {
    padding: 54px 20px 20px;
    color: #d8e9e7;
    background: #072e33;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.8fr repeat(3, 1fr);
    width: min(1160px, 100%);
    margin: 0 auto;
    gap: 42px;
}

.footer-brand { color: #ffffff; }
.footer-grid p { max-width: 350px; color: #9fb8b7; font-size: 12px; line-height: 1.6; }
.footer-grid > div { display: grid; align-content: start; gap: 9px; }
.footer-grid > div > strong { margin-bottom: 6px; color: #ffffff; font-size: 11px; text-transform: uppercase; }
.footer-grid > div > a:not(.brand) { color: #a9c0bf; font-size: 12px; text-decoration: none; }
.footer-grid > div > a:hover { color: #ffffff; }

.footer-bottom {
    display: flex;
    justify-content: space-between;
    width: min(1160px, 100%);
    margin: 42px auto 0;
    padding-top: 18px;
    border-top: 1px solid rgba(255,255,255,0.10);
    color: #83a3a1;
    font-size: 10px;
}

@media (max-width: 980px) {
    .site-links { display: none; }
    .nav-cta { display: none; }
    .site-menu-toggle { display: inline-flex; }
    .site-mobile-menu {
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px;
        max-height: calc(100vh - 96px);
        max-height: calc(100svh - 96px);
        padding: 14px 16px 18px;
        overflow-y: auto;
        border-top: 1px solid rgba(16,42,67,0.08);
        border-bottom: 1px solid rgba(16,42,67,0.12);
        background: rgba(255,255,255,0.99);
        box-shadow: 0 18px 36px rgba(16,42,67,0.14);
    }
    .site-mobile-menu a {
        display: flex;
        align-items: center;
        min-height: 48px;
        padding: 11px 14px;
        border: 1px solid var(--line);
        border-radius: 10px;
        color: var(--ink);
        background: #f7fbfa;
        font-size: 14px;
        font-weight: 850;
        text-decoration: none;
    }
    .site-mobile-menu a:hover,
    .site-mobile-menu a:focus-visible {
        color: var(--teal-dark);
        border-color: #a8d0c9;
        background: var(--teal-pale);
    }
    .hero-inner { grid-template-columns: 1fr; }
    .hero-stats { width: min(440px, 100%); }
    .article-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .standards-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 680px) {
    .research-notice { font-size: 9px; }
    .site-nav { width: min(100% - 24px, 1240px); min-height: 64px; gap: 12px; }
    .brand small { display: none; }
    .brand strong { font-size: 14px; }
    .brand-logo-mark { width: 37px; height: 37px; }
    .site-mobile-menu { grid-template-columns: 1fr; padding-right: 12px; padding-left: 12px; }
    .blog-hero { padding: 58px 16px 52px; }
    .blog-hero h1 { font-size: 44px; }
    .blog-hero p:not(.eyebrow) { font-size: 14px; }
    .hero-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .hero-stat { min-width: 0; padding: 12px 9px; }
    .hero-stat strong { font-size: 21px; }
    .hero-stat span { font-size: 8px; }
    .blog-main { width: min(100% - 24px, 1240px); padding-top: 34px; }
    .blog-toolbar { grid-template-columns: 1fr; gap: 18px; }
    .filter-row { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 4px; }
    .filter-button { flex: 0 0 auto; }
    .article-grid { grid-template-columns: 1fr; }
    .card-body { min-height: 240px; }
    .standards-strip { margin-top: 52px; padding: 24px 18px; }
    .standards-grid { grid-template-columns: 1fr; }
    .article-hero { padding: 40px 16px 30px; }
    .article-hero h1 { font-size: 39px; }
    .article-deck { font-size: 16px; }
    .article-cover { width: calc(100% - 24px); aspect-ratio: 16 / 10; border-radius: 16px; }
    .article-layout { width: calc(100% - 28px); padding: 42px 0 60px; gap: 35px; }
    .article-content { font-size: 17px; }
    .article-content h2 { font-size: 26px; }
    .question-grid { grid-template-columns: 1fr; }
    .verification-table { display: block; overflow-x: auto; }
    .article-sidebar { grid-template-columns: 1fr; }
    .related-section { padding: 48px 14px; }
    .related-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .footer-bottom { flex-direction: column; gap: 8px; }
}