:root {
  --ink: #13242d;
  --ink-soft: #263a43;
  --muted: #617178;
  --paper: #f7f4ee;
  --white: #fff;
  --line: #d9e0df;
  --teal: #1f6f78;
  --teal-dark: #174f56;
  --blue: #3b73d1;
  --sand: #e8dfd1;
  --soft: #eef4f3;
  --dark: #102a31;
  --shadow: 0 24px 70px rgba(24, 47, 55, .14);
  --shadow-soft: 0 12px 36px rgba(24, 47, 55, .09);
  --radius: 26px;
  --shell: min(1220px, calc(100% - 40px));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font-size: 17px; line-height: 1.65; text-rendering: optimizeLegibility; }
a { color: inherit; }
img { max-width: 100%; display: block; }
button, input { font: inherit; }
.shell { width: var(--shell); margin-inline: auto; }
.shell--narrow { max-width: 860px; }
[hidden] { display: none !important; }

.skip-link { position: fixed; left: 18px; top: -80px; z-index: 999; padding: 12px 16px; border-radius: 12px; background: #0e2831; color: #fff; }
.skip-link:focus { top: 14px; }
.preview-notice { background: #7a4b00; color: #fff; padding: 10px 16px; text-align: center; font: 700 14px/1.4 Arial, sans-serif; position: relative; z-index: 9999; }
.preview-notice a { color: #fff; text-decoration: underline; }
.reading-progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 120; pointer-events: none; }
.reading-progress span { display: block; width: 0; height: 100%; background: linear-gradient(90deg, var(--teal), #6ac1c3); box-shadow: 0 0 12px rgba(106, 193, 195, .6); }

.site-header { position: sticky; top: 0; z-index: 80; background: rgba(255, 255, 255, .92); backdrop-filter: blur(18px); border-bottom: 1px solid rgba(217, 224, 223, .82); transition: box-shadow .2s, background .2s; }
.site-header.is-scrolled { box-shadow: 0 10px 30px rgba(23, 47, 55, .08); background: rgba(255, 255, 255, .97); }
.header-inner { min-height: 80px; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; min-width: max-content; }
.brand-mark { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 15px; background: linear-gradient(135deg, var(--teal), #64a7a9); color: #fff; font-weight: 900; font-size: 21px; box-shadow: 0 10px 25px rgba(31, 111, 120, .25); }
.brand strong { display: block; font-size: 21px; line-height: 1; }
.brand small { display: block; font-size: 10px; letter-spacing: .09em; text-transform: uppercase; color: var(--muted); margin-top: 5px; }
.primary-nav { margin-left: auto; display: flex; align-items: center; gap: 22px; }
.primary-nav > a, .nav-dropdown > button { border: 0; background: none; text-decoration: none; font-size: 13px; font-weight: 780; color: #31474f; white-space: nowrap; cursor: pointer; padding: 12px 0; }
.primary-nav > a:hover, .primary-nav > a:focus, .nav-dropdown > button:hover, .nav-dropdown > button:focus { color: var(--teal); }
.primary-nav .nav-cta { padding: 11px 15px; border-radius: 12px; background: var(--ink); color: #fff; }
.primary-nav .nav-cta:hover { color: #fff; background: var(--teal-dark); }
.nav-dropdown { position: relative; }
.nav-dropdown__panel { position: absolute; right: -100px; top: calc(100% + 12px); width: min(640px, calc(100vw - 40px)); padding: 15px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 7px; border: 1px solid var(--line); border-radius: 20px; background: #fff; box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(-8px); transition: .2s; }
.nav-dropdown.is-open .nav-dropdown__panel { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-dropdown__panel a { padding: 13px; border-radius: 13px; text-decoration: none; }
.nav-dropdown__panel a:hover { background: var(--soft); }
.nav-dropdown__panel span { display: block; font-weight: 800; font-size: 14px; }
.nav-dropdown__panel small { display: block; color: var(--muted); font-size: 11px; line-height: 1.35; margin-top: 4px; }
.menu-button { display: none; margin-left: auto; background: none; border: 0; }

.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; color: #57b2b4; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 20px; border-radius: 15px; text-decoration: none; font-size: 14px; font-weight: 800; transition: .2s; }
.button:hover { transform: translateY(-2px); }
.button--primary { background: #fff; color: #14333b; }
.button--glass { border: 1px solid rgba(255, 255, 255, .4); background: rgba(255, 255, 255, .08); color: #fff; }
.button--dark { background: var(--ink); color: #fff; }
.text-link { display: inline-flex; gap: 8px; text-decoration: none; color: var(--teal); font-weight: 850; }
.section--dark .text-link { color: #7fd1d2; }

.home-hero { position: relative; height: min(650px, calc(100vh - 80px)); min-height: 520px; overflow: hidden; background: #d9d5cc; }
.home-hero__picture { position: absolute; inset: 0; display: block; }
.home-hero__image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.home-hero__shade { position: absolute; inset: auto 0 0; height: 30%; background: linear-gradient(transparent, rgba(9, 27, 32, .32)); pointer-events: none; }
.home-hero__badge { position: absolute; left: 50%; bottom: 25px; transform: translateX(-50%); display: flex; gap: 9px; flex-wrap: wrap; }
.home-hero__badge span { padding: 8px 12px; border: 1px solid rgba(255, 255, 255, .52); border-radius: 999px; background: rgba(8, 26, 31, .58); backdrop-filter: blur(10px); color: #fff; font-size: 11px; font-weight: 750; letter-spacing: .04em; }
.hero-copy-band { background: #0e252c; color: #fff; padding: 49px 0 47px; }
.hero-copy-band__inner { display: grid; grid-template-columns: 1.08fr .92fr; gap: 70px; align-items: center; }
.hero-copy-band h1 { font-family: Georgia, "Times New Roman", serif; font-weight: 500; letter-spacing: -.045em; line-height: .98; margin: .55rem 0 0; font-size: clamp(46px, 5vw, 76px); }
.hero-copy-band p { font-size: 19px; line-height: 1.55; color: rgba(255, 255, 255, .86); max-width: 52ch; margin: 0; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 24px 0; }
.hero-proof { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-proof span { font-size: 12px; padding: 7px 10px; border-radius: 999px; background: rgba(255, 255, 255, .11); border: 1px solid rgba(255, 255, 255, .14); }
.intro-strip { background: var(--ink); color: #fff; }
.intro-grid { min-height: 120px; display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 30px; }
.intro-grid p { font-size: 19px; margin: 0; color: #d8e4e5; }
.intro-grid div { display: flex; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
.intro-grid span { border: 1px solid #3f575e; padding: 8px 12px; border-radius: 999px; font-size: 12px; color: #cfe0e1; }

.section { padding: 96px 0; }
.section--soft, .visual-link-section--soft { background: var(--soft); }
.section--dark { background: #102a31; color: #fff; }
.section-heading { max-width: 790px; margin-bottom: 38px; }
.section-heading--row { max-width: none; display: grid; grid-template-columns: 1fr minmax(300px, 470px); justify-content: space-between; align-items: end; gap: 44px; }
.section-heading--row > p { margin: 0 0 8px; }
.section-heading--compact { margin-top: 72px; }
.section-heading h2, .split-feature h2, .editorial-band h2 { font-family: Georgia, "Times New Roman", serif; font-size: clamp(38px, 5vw, 64px); font-weight: 500; line-height: 1.04; letter-spacing: -.035em; margin: .5rem 0 1rem; }
.section-heading p { color: var(--muted); font-size: 19px; }

.topic-visual-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.topic-visual-card { position: relative; min-height: 390px; border-radius: 27px; overflow: hidden; text-decoration: none; background: #17343c; box-shadow: var(--shadow-soft); isolation: isolate; transition: transform .25s, box-shadow .25s; }
.topic-visual-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.topic-visual-card__picture, .topic-visual-card__picture img { position: absolute; inset: 0; width: 100%; height: 100%; }
.topic-visual-card__picture img { object-fit: cover; object-position: center; transition: transform .5s; }
.topic-visual-card:hover .topic-visual-card__picture img { transform: scale(1.035); }
.topic-visual-card__veil { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6, 23, 28, .05) 10%, rgba(6, 23, 28, .25) 43%, rgba(6, 23, 28, .92) 100%); }
.topic-visual-card__number { position: absolute; top: 23px; left: 24px; width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.5); border-radius: 50%; background: rgba(10, 37, 43, .45); color: #fff; font-size: 11px; font-weight: 900; backdrop-filter: blur(8px); }
.topic-visual-card__content { position: absolute; left: 28px; right: 28px; bottom: 27px; color: #fff; }
.topic-visual-card__content > span { font-size: 11px; letter-spacing: .11em; text-transform: uppercase; color: #a8dfe0; font-weight: 800; }
.topic-visual-card h3 { font-family: Georgia, "Times New Roman", serif; font-size: 35px; line-height: 1.02; margin: 9px 0 10px; }
.topic-visual-card p { margin: 0 0 16px; max-width: 56ch; color: rgba(255,255,255,.83); font-size: 14px; line-height: 1.48; }
.topic-visual-card b { font-size: 13px; }
.topic-visual-card b i { font-style: normal; margin-left: 6px; }
.topic-visual-grid--compact .topic-visual-card { min-height: 330px; }

.split-feature { display: grid; grid-template-columns: .9fr 1.1fr; gap: 80px; align-items: start; }
.split-feature__copy p { color: #c9d8da; font-size: 19px; }
.principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
.principle-grid > div { padding: 26px; border-radius: 22px; border: 1px solid #365057; background: #17343c; }
.principle-grid strong { color: #7fd1d2; font-size: 13px; }
.principle-grid h3 { font-size: 21px; line-height: 1.15; }
.principle-grid p { color: #c7d5d7; font-size: 14px; }

.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 19px; }
.scenario-card { border: 1px solid var(--line); border-radius: 24px; overflow: hidden; background: #fff; text-decoration: none; transition: .25s; }
.scenario-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.scenario-card__picture { display: block; aspect-ratio: 16 / 9; overflow: hidden; background: #dde7e6; }
.scenario-card__picture img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s; }
.scenario-card:hover img { transform: scale(1.035); }
.scenario-card__body { padding: 25px; }
.scenario-card h3 { font-family: Georgia, "Times New Roman", serif; font-size: 27px; line-height: 1.08; margin: 10px 0; }
.scenario-card p { color: var(--muted); font-size: 14px; margin: 0 0 18px; }
.scenario-card b { color: var(--teal); font-size: 13px; }
.scenario-card b i { font-style: normal; }

.visual-link-section { padding: 18px 0 95px; }
.visual-link-section--soft { padding-top: 75px; }
.visual-link-banner { position: relative; display: block; height: 360px; border-radius: 28px; overflow: hidden; color: #fff; text-decoration: none; box-shadow: var(--shadow-soft); isolation: isolate; }
.visual-link-banner__picture, .visual-link-banner__picture img { position: absolute; inset: 0; width: 100%; height: 100%; }
.visual-link-banner__picture img { object-fit: cover; object-position: center; transition: transform .5s; }
.visual-link-banner:hover img { transform: scale(1.02); }
.visual-link-banner__shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(8, 29, 35, .88) 0%, rgba(8, 29, 35, .72) 34%, rgba(8, 29, 35, .07) 67%); }
.visual-link-banner__content { position: absolute; left: clamp(28px, 5vw, 66px); top: 50%; transform: translateY(-50%); width: min(530px, calc(100% - 60px)); }
.visual-link-banner__content small { display: block; color: #8ed6d7; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; font-size: 11px; }
.visual-link-banner__content strong { display: block; font-family: Georgia, "Times New Roman", serif; font-size: clamp(35px, 4.2vw, 58px); line-height: 1.02; font-weight: 500; margin: 11px 0 15px; }
.visual-link-banner__content em { display: block; font-style: normal; font-weight: 700; color: rgba(255,255,255,.88); }
.visual-link-banner__content em i { font-style: normal; margin-left: 6px; }
.visual-link-banner--article { height: 330px; }
.article-topic-banner { padding: 0 0 90px; }

.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.article-grid--featured .article-card { box-shadow: var(--shadow-soft); }
.article-card { border: 1px solid var(--line); border-radius: 22px; background: #fff; display: flex; flex-direction: column; min-height: 340px; overflow: hidden; transition: .22s; }
.article-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.article-card__media { position: relative; display: block; aspect-ratio: 16 / 8.7; overflow: hidden; background: #e4eceb; }
.article-card__picture, .article-card__picture img { width: 100%; height: 100%; }
.article-card__picture img { object-fit: cover; transition: transform .45s; }
.article-card:hover .article-card__picture img { transform: scale(1.04); }
.article-card__media:after { content: ""; position: absolute; inset: 50% 0 0; background: linear-gradient(transparent, rgba(5,22,27,.55)); }
.article-card__topic { position: absolute; z-index: 2; left: 14px; bottom: 13px; padding: 7px 10px; border-radius: 999px; background: rgba(8, 30, 36, .7); backdrop-filter: blur(8px); color: #fff; font-size: 10px; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.article-card__body { display: flex; flex-direction: column; flex: 1; padding: 23px 24px 25px; }
.article-card__meta { display: flex; justify-content: space-between; gap: 12px; font-size: 10px; text-transform: uppercase; letter-spacing: .1em; font-weight: 800; color: var(--teal); }
.article-card h3 { font-family: Georgia, "Times New Roman", serif; font-size: 25px; line-height: 1.13; margin: 18px 0 11px; }
.article-card h3 a { text-decoration: none; }
.article-card p { color: var(--muted); font-size: 14px; margin: 0 0 18px; }
.card-link { margin-top: auto; text-decoration: none; font-weight: 800; font-size: 13px; }

.editorial-band { display: grid; grid-template-columns: .8fr 1fr auto; gap: 42px; align-items: center; }
.editorial-band h2 { font-size: 43px; }
.editorial-band p { color: var(--muted); font-size: 18px; }

.breadcrumbs { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-size: 13px; color: var(--muted); margin-bottom: 30px; }
.breadcrumbs a { text-decoration: none; color: var(--teal); }
.topic-hero, .article-hero, .library-hero, .page-hero, .error-hero { background: linear-gradient(135deg, #eef4f3, #f7f4ee); padding: 68px 0; }
.topic-hero__grid, .article-hero__grid, .library-hero__grid, .page-hero__grid, .error-hero__grid { display: grid; grid-template-columns: minmax(0, .93fr) minmax(440px, 1.07fr); gap: 55px; align-items: center; }
.topic-hero h1, .library-hero h1, .page-hero h1, .error-hero h1 { font-family: Georgia, "Times New Roman", serif; font-size: clamp(50px, 6.4vw, 84px); font-weight: 500; line-height: .98; letter-spacing: -.045em; margin: .55rem 0 1rem; }
.topic-hero p, .library-hero p, .page-hero p, .error-hero p { font-size: 20px; max-width: 760px; color: var(--muted); }
.topic-stats { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 27px; }
.topic-stats span { padding: 9px 13px; border-radius: 999px; background: #fff; border: 1px solid var(--line); font-size: 12px; }
.topic-hero__media, .library-hero__media, .page-hero__media, .error-hero__media { position: relative; border-radius: 27px; overflow: hidden; box-shadow: var(--shadow); background: #dce6e5; }
.topic-hero__picture, .library-hero__picture, .page-hero__picture, .error-hero__picture { display: block; aspect-ratio: 21 / 9; }
.topic-hero__picture img, .library-hero__picture img, .page-hero__picture img, .error-hero__picture img { width: 100%; height: 100%; object-fit: cover; }
.topic-hero__caption, .error-hero__media > span { position: absolute; left: 18px; right: 18px; bottom: 16px; padding: 9px 12px; border-radius: 12px; background: rgba(8,30,36,.72); backdrop-filter: blur(8px); color: #fff; font-size: 11px; }
.topic-intents { border-bottom: 1px solid var(--line); background: #fff; }
.topic-intents__inner { min-height: 94px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.topic-intents__inner > span { font-size: 12px; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; color: var(--teal); }
.topic-intents__inner > div { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
.topic-intents b { padding: 8px 11px; border: 1px solid var(--line); border-radius: 999px; font-size: 12px; color: var(--ink-soft); background: #fafbfa; }

.article-hero { padding: 58px 0 68px; }
.article-hero__grid { grid-template-columns: minmax(0, 1.08fr) minmax(390px, .92fr); }
.article-hero h1 { font-family: Georgia, "Times New Roman", serif; font-size: clamp(47px, 6.2vw, 80px); font-weight: 500; line-height: .99; letter-spacing: -.045em; margin: .55rem 0 1rem; }
.article-dek { font-size: 21px; line-height: 1.5; color: var(--muted); max-width: 850px; }
.article-meta { display: flex; gap: 9px; flex-wrap: wrap; margin-top: 25px; }
.article-meta span { padding: 8px 10px; background: #fff; border: 1px solid var(--line); border-radius: 999px; font-size: 11px; }
.article-hero__visual { margin: 0; position: relative; border-radius: 27px; overflow: hidden; box-shadow: var(--shadow); background: #dce6e5; }
.article-hero__picture { display: block; aspect-ratio: 16 / 10.5; }
.article-hero__picture img { width: 100%; height: 100%; object-fit: cover; }
.article-hero__visual figcaption { position: absolute; left: 16px; right: 16px; bottom: 14px; padding: 9px 11px; border-radius: 11px; background: rgba(8,30,36,.7); backdrop-filter: blur(8px); color: #fff; font-size: 10px; }
.article-section { padding: 70px 0 90px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 315px; gap: 36px; align-items: start; }
.prose-card { background: #fff; border: 1px solid var(--line); border-radius: 28px; padding: clamp(25px, 5vw, 60px); box-shadow: 0 15px 50px rgba(26, 51, 60, .06); }
.prose { font-family: Georgia, "Times New Roman", serif; font-size: 19px; line-height: 1.82; color: #26383e; }
.prose h2, .prose h3 { font-family: Inter, ui-sans-serif, system-ui, sans-serif; color: var(--ink); letter-spacing: -.025em; line-height: 1.15; scroll-margin-top: 110px; }
.prose h2 { font-size: 34px; margin: 2.15em 0 .65em; }
.prose h3 { font-size: 24px; margin: 1.8em 0 .5em; }
.prose p { margin: 0 0 1.25em; }
.prose a { color: var(--teal); text-underline-offset: 3px; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose table { width: 100%; border-collapse: collapse; font-family: Inter, ui-sans-serif, system-ui, sans-serif; font-size: 14px; display: block; overflow: auto; }
.prose th, .prose td { border: 1px solid var(--line); padding: 11px; vertical-align: top; }
.prose blockquote { margin: 30px 0; padding: 20px 24px; border-left: 4px solid var(--teal); background: var(--soft); font-style: italic; }
.prose .key-points, .prose .next-step, .prose .sources, .prose .author-box, .prose .editorial-note { font-family: Inter, ui-sans-serif, system-ui, sans-serif; padding: 24px; border-radius: 20px; background: var(--soft); margin: 0 0 28px; }
.prose .sources { background: #f8f6f2; }
.prose img, .prose svg { border-radius: 18px; }
.article-visual-inline { margin: 34px 0 40px; }
.article-visual-inline__picture { display: block; aspect-ratio: 16 / 9; border-radius: 20px; overflow: hidden; background: #dce6e5; }
.article-visual-inline__picture img { width: 100%; height: 100%; object-fit: cover; }
.article-visual-inline figcaption { margin-top: 9px; color: var(--muted); font-family: Inter, ui-sans-serif, system-ui, sans-serif; font-size: 11px; line-height: 1.5; }
.article-aside { position: sticky; top: 105px; display: grid; gap: 16px; }
.aside-card { border: 1px solid var(--line); border-radius: 22px; padding: 24px; background: #fff; }
.aside-card--accent { background: #15333a; color: #fff; }
.aside-card h2 { font-family: Georgia, "Times New Roman", serif; font-size: 30px; line-height: 1.08; }
.aside-card p { font-size: 14px; color: inherit; opacity: .8; }
.aside-links { list-style: none; padding: 0; margin: 15px 0 0; }
.aside-links li + li { border-top: 1px solid var(--line); }
.aside-links a { display: block; padding: 12px 0; text-decoration: none; font-size: 14px; font-weight: 700; }
.aside-card--toc ol { list-style: none; padding: 0; margin: 14px 0 0; counter-reset: toc; }
.aside-card--toc li { counter-increment: toc; display: grid; grid-template-columns: 24px 1fr; gap: 8px; padding: 8px 0; border-bottom: 1px solid #edf1f0; }
.aside-card--toc li:before { content: counter(toc, decimal-leading-zero); color: var(--teal); font-size: 10px; font-weight: 900; padding-top: 4px; }
.aside-card--toc a { text-decoration: none; font-size: 12px; font-weight: 700; line-height: 1.4; }

.guide-tools { position: sticky; top: 80px; z-index: 35; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); backdrop-filter: blur(15px); }
.guide-tools__inner { padding: 20px 0 17px; }
.guide-search { display: grid; grid-template-columns: 180px 1fr; align-items: center; gap: 18px; }
.guide-search span { font-size: 12px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; color: var(--teal); }
.guide-search input { width: 100%; height: 48px; border: 1px solid var(--line); border-radius: 14px; padding: 0 15px; color: var(--ink); background: #fafcfb; outline: none; }
.guide-search input:focus { border-color: #83b7b9; box-shadow: 0 0 0 4px rgba(31,111,120,.1); }
.guide-filters { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 13px; }
.guide-filters button { border: 1px solid var(--line); border-radius: 999px; padding: 7px 11px; background: #fff; color: var(--ink-soft); font-size: 11px; font-weight: 750; cursor: pointer; }
.guide-filters button:hover, .guide-filters button.is-active { border-color: var(--teal); background: var(--teal); color: #fff; }
.guide-results { margin: 10px 0 0; font-size: 11px; color: var(--muted); }
.section--library { padding-top: 54px; }
.empty-state { padding: 70px 0; }
.empty-state--filtered { text-align: center; }

.error-hero { min-height: 620px; display: grid; align-items: center; }
.error-hero__copy .button--primary { background: var(--teal); color: #fff; }
.error-hero__copy .button--dark { background: var(--ink); }

.site-footer { background: #0e252c; color: #d8e3e5; padding: 68px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr .75fr .75fr; gap: 70px; }
.brand--footer { color: #fff; }
.footer-about p { max-width: 520px; color: #a9bdc1; }
.footer-principles { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 22px; }
.footer-principles span { border: 1px solid #37515a; border-radius: 999px; padding: 7px 10px; font-size: 10px; color: #bcd0d3; }
.footer-topics, .footer-links { display: grid; align-content: start; gap: 9px; }
.footer-topics h2, .footer-links h2 { margin: 0 0 10px; color: #fff; font-size: 13px; text-transform: uppercase; letter-spacing: .1em; }
.footer-topics a, .footer-links a { text-decoration: none; color: #b8c9cc; font-size: 13px; }
.footer-topics a:hover, .footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid #294149; margin-top: 43px; padding-top: 22px; display: flex; justify-content: space-between; gap: 20px; font-size: 12px; color: #91a7ab; }

.reveal-pending { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal-pending.is-visible { opacity: 1; transform: none; }

@media (max-width: 1080px) {
  .primary-nav { position: absolute; left: 20px; right: 20px; top: 74px; padding: 18px; border-radius: 18px; box-shadow: var(--shadow); background: #fff; display: none; flex-direction: column; align-items: stretch; gap: 4px; }
  .primary-nav.is-open { display: flex; }
  .primary-nav > a, .nav-dropdown > button { padding: 10px; text-align: left; width: 100%; }
  .primary-nav .nav-cta { text-align: center; }
  .menu-button { display: flex; align-items: center; gap: 5px; cursor: pointer; }
  .menu-button span { display: block; width: 17px; height: 2px; background: var(--ink); }
  .menu-button b { font-size: 12px; margin-left: 5px; }
  .nav-dropdown__panel { position: static; width: 100%; box-shadow: none; border: 0; padding: 5px; grid-template-columns: 1fr; display: none; opacity: 1; visibility: visible; transform: none; }
  .nav-dropdown.is-open .nav-dropdown__panel { display: grid; }
  .article-grid { grid-template-columns: repeat(2, 1fr); }
  .article-layout { grid-template-columns: 1fr; }
  .article-aside { position: static; grid-template-columns: repeat(2, 1fr); }
  .aside-card--toc { grid-column: 1 / -1; }
  .split-feature { grid-template-columns: 1fr; }
  .editorial-band { grid-template-columns: 1fr; }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .scenario-card:last-child { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; }
  .scenario-card:last-child .scenario-card__picture { aspect-ratio: auto; min-height: 320px; }
  .topic-hero__grid, .article-hero__grid, .library-hero__grid, .page-hero__grid, .error-hero__grid { grid-template-columns: 1fr; }
  .topic-hero__media, .library-hero__media, .page-hero__media, .error-hero__media { order: -1; }
  .article-hero__visual { order: -1; }
  .topic-hero__picture, .library-hero__picture, .page-hero__picture, .error-hero__picture { aspect-ratio: 21 / 8; }
}

@media (max-width: 760px) {
  :root { --shell: min(100% - 24px, 1220px); }
  body { font-size: 16px; }
  .site-header { position: relative; }
  .header-inner { min-height: 70px; }
  .brand small { display: none; }
  .home-hero { height: 430px; min-height: 0; }
  .home-hero__image { object-position: 64% center; }
  .home-hero__badge { left: 12px; right: 12px; transform: none; justify-content: center; bottom: 14px; }
  .home-hero__badge span { font-size: 9px; }
  .hero-copy-band { padding: 35px 0; }
  .hero-copy-band__inner { grid-template-columns: 1fr; gap: 23px; }
  .hero-copy-band h1 { font-size: 44px; }
  .hero-copy-band p { font-size: 17px; }
  .intro-grid { grid-template-columns: 1fr; padding: 26px 0; }
  .intro-grid div { justify-content: flex-start; }
  .section { padding: 67px 0; }
  .section-heading--row { grid-template-columns: 1fr; gap: 5px; }
  .topic-visual-grid, .article-grid, .principle-grid, .scenario-grid { grid-template-columns: 1fr; }
  .topic-visual-card { min-height: 350px; }
  .scenario-card:last-child { grid-column: auto; display: block; }
  .scenario-card:last-child .scenario-card__picture { aspect-ratio: 16 / 9; min-height: 0; }
  .visual-link-section { padding-bottom: 67px; }
  .visual-link-banner { height: 410px; }
  .visual-link-banner__picture img { object-position: 68% center; }
  .visual-link-banner__shade { background: linear-gradient(180deg, rgba(8,29,35,.1), rgba(8,29,35,.92)); }
  .visual-link-banner__content { left: 24px; right: 24px; top: auto; bottom: 25px; transform: none; width: auto; }
  .visual-link-banner__content strong { font-size: 37px; }
  .topic-hero, .article-hero, .library-hero, .page-hero, .error-hero { padding: 28px 0 48px; }
  .topic-hero h1, .library-hero h1, .page-hero h1, .error-hero h1, .article-hero h1 { font-size: 44px; }
  .topic-hero__picture, .library-hero__picture, .page-hero__picture, .error-hero__picture { aspect-ratio: 16 / 10; }
  .article-hero__picture { aspect-ratio: 16 / 11; }
  .topic-intents__inner { align-items: flex-start; flex-direction: column; padding: 22px 0; }
  .topic-intents__inner > div { justify-content: flex-start; }
  .article-aside { grid-template-columns: 1fr; }
  .article-section { padding: 48px 0 67px; }
  .prose-card { padding: 24px; border-radius: 20px; }
  .prose { font-size: 17px; }
  .prose h2 { font-size: 29px; }
  .prose h3 { font-size: 22px; }
  .guide-tools { position: relative; top: auto; }
  .guide-search { grid-template-columns: 1fr; gap: 7px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom { display: block; }
  .footer-bottom span { display: block; margin-bottom: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *:before, *:after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal-pending { opacity: 1; transform: none; }
}