@font-face {
  font-family: "Hanken Grotesk";
  src: url("assets/hanken-grotesk-400.ttf") format("truetype");
  font-style: normal;
  font-weight: 300 400;
  font-display: swap;
}

@font-face {
  font-family: "Hanken Grotesk";
  src: url("assets/hanken-grotesk-500.ttf") format("truetype");
  font-style: normal;
  font-weight: 500 700;
  font-display: swap;
}

:root {
  /* Current Safe in the Seat / MAST variables from the active style guide. */
  --_color---neutral--charcoal: #1a1917;
  --_color---neutral--dark-gray: #3d3835;
  --_color---neutral--mid-gray: #6d6560;
  --_color---neutral--warm-gray: #9b9490;
  --_color---neutral--stone: #c8c3be;
  --_color---neutral--sand: #e8e4df;
  --_color---primary--ocean: #3c4d49;
  --_color---primary--ocean-deep: #2a3634;
  --_color---primary--ocean-light: #9db5b0;
  --_color---primary--seafoam: #c8d3cc;
  --_color---secondary--sky-dark: #5a7ab0;
  --_color---secondary--sky: #8ea6d1;
  --_color---secondary--blush: #fac4a6;
  --_color---neutral--light-gray: #f7f5f2;
  --_color---neutral--white: #fff;
  --_theme---primary--text: #3f4d49;
  --_theme---primary--accent: #f7f5f2;
  --_components---container--max-width: 90rem;
  --_layout---grid--columns: 12;
  --_layout---grid--gap-main: clamp(1.5rem, 3vw, 2.5rem);
  --_typography---fonts--primary-font: "Hanken Grotesk", Arial, sans-serif;
  --_typography---h1--font-size: clamp(3.65rem, 7vw, 6.7rem);
  --_typography---h2--font-size: clamp(2.55rem, 5.3vw, 4.8rem);
  --_typography---h3--font-size: clamp(1.65rem, 2.7vw, 2.35rem);
  --_typography---paragraph-xl--font-size: clamp(1.22rem, 2vw, 1.5rem);
  --_components---button--horizontal-padding: 1.5em;
  --_components---button--font-weight: 500;
  --section-space: clamp(5.5rem, 9vw, 9rem);
  --content-width: 46rem;
  --radius-sm: .5rem;
  --radius-md: 1rem;
  --radius-lg: 1.25rem;
  --shadow-border: 0 0 0 1px rgb(0 0 0 / .06), 0 1px 2px -1px rgb(0 0 0 / .06), 0 2px 4px rgb(0 0 0 / .04);
  --shadow-border-hover: 0 0 0 1px rgb(0 0 0 / .08), 0 1px 2px -1px rgb(0 0 0 / .08), 0 2px 4px rgb(0 0 0 / .06);
  --shadow-soft: 0 1rem 3rem rgb(26 25 23 / .08);
}

* { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  margin: 0;
  overflow-x: clip;
  background: var(--_color---neutral--white);
  color: var(--_theme---primary--text);
  font-family: var(--_typography---fonts--primary-font);
  font-size: 1.08rem;
  font-weight: 300;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
figure img,
.author-card img,
.byline img { outline: 1px solid rgb(0 0 0 / .1); outline-offset: -1px; }
a { color: inherit; }
p { margin: 0 0 1.35em; }
p, li, figcaption { text-wrap: pretty; }
strong { font-weight: 500; }
h1, h2, h3, h4 { margin: 0 0 .5em; font-weight: 500; line-height: 1.05; text-wrap: balance; }
h1 { font-size: var(--_typography---h1--font-size); letter-spacing: -.05em; }
h2 { font-size: var(--_typography---h2--font-size); letter-spacing: -.04em; }
h3 { font-size: var(--_typography---h3--font-size); letter-spacing: -.025em; line-height: 1.12; }
h4 { font-size: 1.22rem; line-height: 1.25; }
button { font: inherit; }

.section { position: relative; padding: var(--section-space) 0; }
.container { width: min(calc(100% - clamp(2rem, 7vw, 7rem)), var(--_components---container--max-width)); margin-inline: auto; }
.row { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--_layout---grid--gap-main); }
.col-lg-7 { grid-column: span 7; }
.col-lg-5 { grid-column: span 5; }
.row-align-center { align-items: center; }
.eyebrow { margin: 0 0 1.55em; font-size: .76rem; font-weight: 500; letter-spacing: .12em; line-height: 1.2; text-transform: uppercase; }
.paragraph-xl { font-size: var(--_typography---paragraph-xl--font-size); line-height: 1.48; }
.paragraph-lg { font-size: clamp(1.12rem, 2vw, 1.3rem); line-height: 1.55; }
.u-text-balance { text-wrap: balance; }
.u-bg-ocean { background: var(--_color---primary--ocean); }
.u-bg-ocean-deep { background: var(--_color---primary--ocean-deep); }
.u-bg-seafoam { background: var(--_color---primary--seafoam); }
.u-bg-sky { background: var(--_color---secondary--sky); }
.u-bg-blush { background: var(--_color---secondary--blush); }
.u-bg-lightgray { background: var(--_color---neutral--light-gray); }
.u-bg-white { background: var(--_color---neutral--white); }
.u-mode-dark { color: var(--_color---neutral--light-gray); }

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: .72rem;
  padding: .8em calc(var(--_components---button--horizontal-padding) - 2px) .8em var(--_components---button--horizontal-padding);
  border: 1px solid transparent;
  border-radius: 10rem;
  background: var(--_color---primary--ocean);
  color: white;
  font-weight: var(--_components---button--font-weight);
  line-height: 1.3;
  text-decoration: none;
  transition-property: scale, background-color, box-shadow;
  transition-duration: 160ms;
  transition-timing-function: ease-out;
}
.button:hover { background: var(--_color---primary--ocean-deep); box-shadow: var(--shadow-border-hover); }
.button:active { scale: .96; }
.button:focus-visible,
.text-link:focus-visible,
.faq-list summary:focus-visible,
.prototype-switcher button:focus-visible { outline: 2px solid var(--_color---secondary--sky-dark); outline-offset: 3px; }
.button-small { min-height: 2.75rem; font-size: .9rem; }
.button-ghost { border-color: rgb(255 255 255 / .55); background: transparent; color: white; }
.button[disabled] { cursor: not-allowed; opacity: .7; }
.button[disabled]:active { scale: 1; }
.text-link { display: inline-flex; min-height: 2.5rem; gap: .5rem; align-items: center; border-bottom: 1px solid currentColor; font-weight: 500; line-height: 1.35; text-decoration: none; }
.text-link-compact { margin-top: .65rem; font-size: .9rem; }

/* Editorial masthead: a typographic lead followed by broad site photography. */
.hero { min-height: 0; overflow: hidden; padding: clamp(4.5rem, 8vw, 7.5rem) 0 0; background: var(--_color---neutral--light-gray) !important; color: var(--_color---primary--ocean) !important; }
.hero-grid { row-gap: clamp(2.5rem, 5vw, 4.5rem); }
.hero-copy { grid-column: 2 / span 10; max-width: 76rem; padding: 0; }
.hero-copy h1 { max-width: 16ch; }
.hero-deck { max-width: 42rem; color: var(--_color---neutral--mid-gray); }
.byline { display: flex; gap: 1rem; align-items: center; margin-top: 2.5rem; }
.byline img { width: 3.5rem; aspect-ratio: 1; border-radius: 50%; object-fit: cover; object-position: 50% 20%; }
.byline p { margin: 0; line-height: 1.35; }
.byline span { color: var(--_color---neutral--mid-gray); font-size: .88rem; }
.hero-media { grid-column: 1 / -1; }
.image-frame { margin: 0; }
.image-frame-hero { padding: 0; border: 0; border-radius: var(--radius-lg) var(--radius-lg) 0 0; overflow: hidden; }
.image-frame-hero img { width: 100%; height: clamp(27rem, 50vw, 43rem); border-radius: inherit; object-fit: cover; object-position: 50% 46%; }
.image-frame-hero figcaption { margin: 0; padding: .8rem 0; color: var(--_color---neutral--mid-gray); font-size: .82rem; line-height: 1.45; }

.intro-section { padding-top: clamp(4.5rem, 7vw, 7rem); background: var(--_color---neutral--white); }
.article-shell { display: grid; grid-template-columns: minmax(11rem, 14rem) minmax(0, 60rem); gap: clamp(3rem, 6vw, 6.5rem); align-items: start; justify-content: center; }
.toc-card { position: sticky; top: 1.5rem; padding: .25rem 0 .25rem 1.35rem; border-left: 1px solid var(--_color---neutral--stone); background: transparent; }
.toc-card ol { margin: 0 0 1.7rem; padding: 0; list-style: none; }
.toc-card li { margin: .7rem 0; font-size: .92rem; line-height: 1.35; }
.toc-card a:not(.button) { text-decoration: none; }
.toc-card a:not(.button):hover { text-decoration: underline; text-underline-offset: .2em; }
.toc-card .button { width: 100%; }
.article-flow { min-width: 0; }
.intro-copy { max-width: var(--content-width); margin-bottom: var(--section-space); }
.intro-copy > .paragraph-xl:first-child { padding-left: 1.25rem; border-left: .25rem solid var(--_color---secondary--blush); }
.content-section { max-width: var(--content-width); margin: 0 0 var(--section-space); scroll-margin-top: 5rem; }
.content-section-wide { max-width: 60rem; }
.section-heading { margin-bottom: clamp(2.75rem, 5vw, 4.5rem); padding-top: 1.15rem; border-top: 1px solid var(--_color---primary--ocean); }
.section-heading .eyebrow { color: var(--_color---neutral--mid-gray); }
.section-heading .paragraph-lg { max-width: 42rem; margin-bottom: 0; }

.type-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: clamp(2rem, 4vw, 4rem); }
.info-card { position: relative; min-height: 0; padding: 2rem 0 2.5rem; border-top: 1px solid var(--_color---neutral--stone); border-radius: 0; background: transparent !important; color: var(--_theme---primary--text); }
.info-card h3 { max-width: 15ch; }
.info-card p:last-of-type { margin-bottom: 0; }
.card-number { display: block; margin-bottom: 1.5rem; color: var(--_color---secondary--sky-dark); font-size: .78rem; font-weight: 500; letter-spacing: .1em; line-height: 1; }
.callout { display: grid; grid-template-columns: .75fr 1.25fr; gap: clamp(2rem, 5vw, 4rem); margin: 1.5rem 0 4.5rem; padding: clamp(2rem, 4.5vw, 3.5rem); border-radius: var(--radius-lg); box-shadow: var(--shadow-soft); }
.split-feature { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(2rem, 5vw, 4rem); margin: 4.5rem 0; align-items: center; }
.feature-copy { padding: 0; }
.production-placeholder { min-height: 18rem; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1rem; margin: 0; padding: 2rem; border: 1px dashed var(--_color---neutral--warm-gray); border-radius: var(--radius-md); background: var(--_color---neutral--light-gray); color: var(--_color---neutral--dark-gray); text-align: center; }
.placeholder-icon { display: grid; width: 3rem; height: 3rem; place-items: center; border-radius: 50%; background: var(--_color---primary--seafoam); font-size: 1.2rem; }
.production-placeholder figcaption { max-width: 18rem; font-size: .88rem; line-height: 1.45; }
.statement-card { margin-top: 4.5rem; padding: clamp(2.25rem, 5vw, 4.5rem); border-radius: var(--radius-lg); }
.statement-card blockquote { margin: .25rem 0 1.75rem; font-size: clamp(1.9rem, 4vw, 3.25rem); font-weight: 300; line-height: 1.12; letter-spacing: -.035em; text-wrap: balance; }
.statement-card p:last-child { max-width: 42rem; margin-bottom: 0; color: rgb(255 255 255 / .78); }

.age-list { margin-bottom: 4.5rem; border-top: 1px solid var(--_color---neutral--stone); }
.age-list article { display: grid; grid-template-columns: 9rem 1fr; gap: 2rem; padding: 2.25rem 0; border-bottom: 1px solid var(--_color---neutral--stone); }
.age-list article > span { color: var(--_color---secondary--sky-dark); font-size: .78rem; font-weight: 500; letter-spacing: .09em; text-transform: uppercase; }
.age-list article p { margin-bottom: 0; }
.travel-mode-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: clamp(2rem, 5vw, 5rem); margin: 1.8rem 0 4.5rem; border-top: 1px solid var(--_color---neutral--stone); }
.travel-mode-grid article,
.travel-mode-grid article:nth-child(n) { grid-column: auto; min-height: 0; padding: 1.75rem 0 2rem; border-bottom: 1px solid var(--_color---neutral--stone); background: transparent; }
.travel-mode-grid article > span { display: block; margin-bottom: 1rem; color: var(--_color---secondary--sky-dark); font-size: 1.45rem; }
.travel-mode-grid p { margin-bottom: 0; font-size: .98rem; line-height: 1.55; }
.cta-block { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: clamp(2.25rem, 5vw, 4rem); border-radius: var(--radius-lg); box-shadow: var(--shadow-border); }
.cta-block > div { max-width: 34rem; }
.cta-block p:last-child { margin-bottom: 0; }
.cta-block .button { flex: 0 0 auto; }

.table-scroll { margin-bottom: 4.5rem; overflow-x: auto; border-radius: var(--radius-md); background: white; box-shadow: var(--shadow-border); scrollbar-color: var(--_color---neutral--stone) transparent; }
table { width: 100%; min-width: 58rem; border-collapse: collapse; text-align: left; }
th, td { padding: 1rem 1.1rem; border-bottom: 1px solid var(--_color---neutral--sand); vertical-align: top; }
thead th { background: var(--_color---primary--ocean); color: white; font-size: .75rem; letter-spacing: .09em; text-transform: uppercase; }
thead th:first-child { border-radius: var(--radius-md) 0 0; }
thead th:last-child { border-radius: 0 var(--radius-md) 0 0; }
tbody th { font-weight: 500; }
tbody tr:last-child > * { border-bottom: 0; }
tbody tr { transition-property: background-color; transition-duration: 150ms; transition-timing-function: ease-out; }
tbody tr:hover { background: var(--_color---neutral--light-gray); }
td, tbody th { font-size: .9rem; line-height: 1.42; }
td a { font-weight: 500; }
.status { display: inline-block; padding: .3rem .55rem; border-radius: 2rem; font-size: .77rem; font-weight: 500; line-height: 1.25; }
.status-yes { background: var(--_color---primary--seafoam); }
.status-no { background: var(--_color---secondary--blush); }
.status-check { background: var(--_color---neutral--sand); }
.recommendation-groups { display: grid; grid-template-columns: 1fr; }
.recommendation-groups section { padding: 2.75rem 0; border-top: 1px solid var(--_color---neutral--stone); background: transparent; }
.recommendation-groups section:last-child { border-bottom: 1px solid var(--_color---neutral--stone); }
.recommendation-groups section > * { max-width: var(--content-width); }
.recommendation-groups p { font-size: 1rem; line-height: 1.62; }

.media-band { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(2.5rem, 5vw, 5rem); margin-bottom: 4.5rem; align-items: center; }
.media-band figure, .photo-pair figure, .original-media-grid figure { margin: 0; }
.media-band img { width: 100%; aspect-ratio: .84; border-radius: var(--radius-md); object-fit: cover; }
figcaption { margin-top: .7rem; color: var(--_color---neutral--mid-gray); font-size: .82rem; line-height: 1.45; }
.cta-sky, .cta-freebie { margin: 3.5rem 0 4.5rem; }
.step-list { margin: 2rem 0 4.5rem; padding: 0; list-style: none; border-top: 1px solid var(--_color---neutral--stone); }
.step-list li { display: grid; grid-template-columns: 3rem 1fr; gap: 1.5rem; padding: 1.75rem 0; border-bottom: 1px solid var(--_color---neutral--stone); }
.step-list li > span { display: grid; width: 2.5rem; height: 2.5rem; place-items: center; border-radius: 50%; background: var(--_color---primary--ocean); color: white; font-weight: 500; }
.step-list p { margin-bottom: 0; }
.photo-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin: 4.5rem 0; }
.photo-pair img { width: 100%; aspect-ratio: 1; border-radius: var(--radius-md); object-fit: cover; }
.international-note { margin: 4.5rem 0; padding: clamp(1.75rem, 4vw, 3rem); border-left: .3rem solid var(--_color---secondary--sky-dark); border-radius: 0 var(--radius-md) var(--radius-md) 0; }
.original-media-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin: 4.5rem 0; }
.original-media-grid > * { min-height: 18rem; }
.existing-media img { width: 100%; height: 18rem; border-radius: var(--radius-md); object-fit: cover; }
.original-media-grid .production-placeholder { min-height: 18rem; }

.accessory-columns { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(2rem, 5vw, 5rem); border-top: 1px solid var(--_color---neutral--stone); }
.accessory-columns > section { padding: 2.5rem 0; background: transparent; }
.accessory-columns > section:first-child,
.accessory-columns > section:last-child { border-top: 0; }
.accessory-columns h4 { margin-top: 2.4rem; }
.placeholder-inline { min-height: 10rem; margin: 2rem 0; }

.faq-list { border-top: 1px solid var(--_color---neutral--stone); }
.faq-list details { border-bottom: 1px solid var(--_color---neutral--stone); }
.faq-list summary { display: flex; min-height: 3.5rem; align-items: center; justify-content: space-between; gap: 2rem; padding: 1.55rem 0; cursor: pointer; font-size: 1.18rem; font-weight: 500; line-height: 1.35; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; flex: 0 0 auto; font-size: 1.55rem; font-weight: 300; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { max-width: 42rem; padding: 0 3rem 1.75rem 0; }

.checklist-section { max-width: 60rem; padding: clamp(2.5rem, 6vw, 5rem); border-radius: var(--radius-lg); color: white; }
.checklist-section .section-heading { border-color: rgb(255 255 255 / .35); }
.checklist-section .section-heading .eyebrow { color: rgb(255 255 255 / .72); }
.checklist { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 2rem; margin: 0; padding: 0; list-style: none; border-top: 1px solid rgb(255 255 255 / .25); }
.checklist li { display: flex; gap: 1rem; padding: 1.35rem 0; border-bottom: 1px solid rgb(255 255 255 / .25); background: transparent; }
.checklist li > span { display: grid; flex: 0 0 1.8rem; height: 1.8rem; place-items: center; border-radius: 50%; background: var(--_color---secondary--blush); color: var(--_color---primary--ocean-deep); font-weight: 500; }
.checklist p { margin: 0; font-size: .93rem; line-height: 1.5; }
.download-mockup { display: flex; align-items: center; gap: 1rem; margin-top: 2rem; padding-top: 2rem; border-top: 1px solid rgb(255 255 255 / .25); }
.download-mockup > span { font-size: 2rem; }
.download-mockup p { margin: 0; color: rgb(255 255 255 / .7); font-size: .86rem; }
.download-mockup .button { margin-left: auto; }

.support-card { display: flex; align-items: end; justify-content: space-between; gap: 2rem; padding: clamp(2.5rem, 6vw, 5rem); border-radius: var(--radius-lg); box-shadow: var(--shadow-border); }
.support-card > div { max-width: 39rem; }
.author-card { display: grid; grid-template-columns: 10rem 1fr; gap: 2.25rem; margin: 4.5rem 0 0; padding: 2.5rem 0; border-top: 1px solid var(--_color---neutral--stone); border-bottom: 1px solid var(--_color---neutral--stone); align-items: center; }
.author-card img { width: 10rem; aspect-ratio: .85; border-radius: var(--radius-md); object-fit: cover; object-position: 50% 20%; }
.author-card p { max-width: 35rem; }
.signoff { margin: 4.5rem 0 0; font-size: clamp(2.8rem, 7vw, 5.5rem); line-height: 1; letter-spacing: -.05em; }

.prototype-switcher { position: fixed; z-index: 30; left: 50%; bottom: 1rem; display: none; align-items: center; gap: .8rem; padding: .55rem; border-radius: 10rem; background: var(--_color---neutral--charcoal); color: white; box-shadow: 0 1rem 3rem rgb(0 0 0 / .25); transform: translateX(-50%); }
.prototype-switcher.is-visible { display: flex; }
.prototype-switcher button { display: grid; width: 2.75rem; height: 2.75rem; place-items: center; border: 0; border-radius: 50%; background: rgb(255 255 255 / .12); color: white; cursor: pointer; transition-property: scale, background-color; transition-duration: 150ms; transition-timing-function: ease-out; }
.prototype-switcher button:hover { background: rgb(255 255 255 / .2); }
.prototype-switcher button:active { scale: .96; }
.prototype-switcher span { min-width: 10.5rem; text-align: center; line-height: 1.15; }
.prototype-switcher small { display: block; margin-bottom: .2rem; color: rgb(255 255 255 / .6); font-size: .62rem; letter-spacing: .08em; text-transform: uppercase; }
.prototype-switcher strong { font-size: .82rem; }

/* Variant B: the full-width photographic pattern used on major site landing pages. */
html[data-variant="B"] .hero { padding: 0; background: var(--_color---primary--ocean) !important; }
html[data-variant="B"] .hero .container { width: 100%; max-width: none; }
html[data-variant="B"] .hero-grid { position: relative; display: block; }
html[data-variant="B"] .hero-copy { position: absolute; z-index: 2; left: clamp(2rem, 8vw, 8rem); bottom: clamp(3rem, 8vw, 7rem); width: min(52rem, calc(100% - 4rem)); color: white; }
html[data-variant="B"] .hero-copy h1 { max-width: 14ch; }
html[data-variant="B"] .hero-deck,
html[data-variant="B"] .byline span { color: rgb(255 255 255 / .8); }
html[data-variant="B"] .hero-media { position: relative; }
html[data-variant="B"] .hero-media::after { position: absolute; inset: 0; background: linear-gradient(90deg, rgb(26 25 23 / .78) 0%, rgb(26 25 23 / .32) 58%, rgb(26 25 23 / .08) 100%); content: ""; pointer-events: none; }
html[data-variant="B"] .image-frame-hero { border-radius: 0; }
html[data-variant="B"] .image-frame-hero img { height: min(88svh, 58rem); min-height: 46rem; border-radius: 0; }
html[data-variant="B"] .image-frame-hero figcaption { display: none; }
html[data-variant="B"] .article-shell { display: block; max-width: 66rem; margin-inline: auto; }
html[data-variant="B"] .toc-card { position: sticky; z-index: 10; top: 0; display: flex; align-items: center; gap: 1.5rem; margin: calc(-1 * clamp(4.5rem, 7vw, 7rem)) 0 5rem; padding: .8rem 1rem; overflow-x: auto; border: 0; border-radius: 0 0 var(--radius-md) var(--radius-md); background: rgb(255 255 255 / .96); box-shadow: var(--shadow-border); scrollbar-width: none; }
html[data-variant="B"] .toc-card::-webkit-scrollbar { display: none; }
html[data-variant="B"] .toc-card .eyebrow,
html[data-variant="B"] .toc-card .button { display: none; }
html[data-variant="B"] .toc-card ol { display: flex; gap: 2rem; margin: 0; padding: 0 .5rem; white-space: nowrap; }
html[data-variant="B"] .intro-copy { max-width: 56rem; }
html[data-variant="B"] .content-section:not(.content-section-wide) { max-width: 52rem; }
html[data-variant="B"] .content-section-wide { max-width: 66rem; }

/* Variant C: a compact, reading-first expression using the same site system. */
html[data-variant="C"] { --content-width: 42rem; --section-space: clamp(4.5rem, 7vw, 7rem); }
html[data-variant="C"] .hero { padding-bottom: clamp(4.5rem, 7vw, 7rem); background: white !important; }
html[data-variant="C"] .hero-copy { grid-column: 1 / span 7; align-self: center; }
html[data-variant="C"] .hero-copy h1 { font-size: clamp(3rem, 5.3vw, 5.3rem); }
html[data-variant="C"] .hero-media { grid-column: 9 / -1; }
html[data-variant="C"] .image-frame-hero { border-radius: var(--radius-md); }
html[data-variant="C"] .image-frame-hero img { height: min(58vw, 39rem); aspect-ratio: .82; }
html[data-variant="C"] .article-shell { grid-template-columns: minmax(10rem, 12rem) minmax(0, 48rem); gap: clamp(2.5rem, 5vw, 5rem); }
html[data-variant="C"] .content-section-wide { max-width: 48rem; }
html[data-variant="C"] .type-grid,
html[data-variant="C"] .travel-mode-grid,
html[data-variant="C"] .accessory-columns { grid-template-columns: 1fr; }

@media (max-width: 1024px) {
  :root { --section-space: clamp(4.75rem, 8vw, 7rem); }
  .col-md-12 { grid-column: 1 / -1; }
  .hero-copy { grid-column: 1 / -1; }
  .hero-media { grid-column: 1 / -1; max-width: none; }
  .image-frame-hero img { height: clamp(25rem, 63vw, 38rem); }
  .article-shell,
  html[data-variant="C"] .article-shell { grid-template-columns: minmax(0, 1fr); }
  .toc-card,
  html[data-variant="B"] .toc-card { position: sticky; z-index: 15; top: 0; display: flex; align-items: center; gap: 1.25rem; margin: calc(-1 * clamp(4.5rem, 7vw, 7rem)) calc(-1 * clamp(1rem, 3.5vw, 3.5rem)) 4.5rem; padding: .75rem clamp(1rem, 3.5vw, 3.5rem); overflow-x: auto; border: 0; border-radius: 0; background: rgb(255 255 255 / .96); box-shadow: var(--shadow-border); scrollbar-width: none; }
  .toc-card::-webkit-scrollbar { display: none; }
  .toc-card .eyebrow,
  .toc-card .button { display: none; }
  .toc-card ol { display: flex; flex: 0 0 auto; gap: 2rem; margin: 0; padding: 0; white-space: nowrap; }
  .toc-card li { margin: 0; }
  .intro-copy,
  .content-section,
  html[data-variant="B"] .intro-copy,
  html[data-variant="B"] .content-section:not(.content-section-wide) { max-width: var(--content-width); }
  .content-section-wide,
  html[data-variant="B"] .content-section-wide,
  html[data-variant="C"] .content-section-wide { max-width: 100%; }
  .recommendation-groups section > * { max-width: var(--content-width); }
  .original-media-grid { grid-template-columns: 1fr 1fr; }
  .original-media-grid > :first-child { grid-column: 1 / -1; }
  .accessory-columns { grid-template-columns: 1fr; gap: 0; }
  .accessory-columns > section { border-bottom: 1px solid var(--_color---neutral--stone); }
  html[data-variant="C"] .hero-copy { grid-column: 1 / span 7; }
  html[data-variant="C"] .hero-media { grid-column: 8 / -1; }
  html[data-variant="C"] .image-frame-hero img { height: clamp(24rem, 55vw, 34rem); }
}

@media (max-width: 900px) {
  .callout,
  .split-feature,
  .media-band { grid-template-columns: 1fr; }
  .callout { gap: .5rem; }
  .split-feature { align-items: start; }
  .media-band figure { max-width: 32rem; }
  .table-scroll { overflow: visible; background: transparent; box-shadow: none; }
  table, thead, tbody, tr, th, td { display: block; min-width: 0; width: 100%; }
  thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; clip-path: inset(50%); }
  tbody { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
  tbody tr { padding: 1.35rem; border-radius: var(--radius-md); background: white; box-shadow: var(--shadow-border); }
  tbody tr:hover { background: white; }
  tbody th { margin-bottom: .45rem; padding: 0 0 1rem; border-bottom: 1px solid var(--_color---neutral--sand); font-size: 1.12rem; }
  tbody td { display: grid; grid-template-columns: minmax(5.5rem, .75fr) minmax(0, 1.25fr); gap: .75rem; padding: .65rem 0; border-bottom: 1px solid var(--_color---neutral--sand); }
  tbody td:last-child { border-bottom: 0; padding-bottom: 0; }
  tbody td::before { color: var(--_color---neutral--mid-gray); font-size: .7rem; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; }
  tbody td:nth-child(2)::before { content: "Best for"; }
  tbody td:nth-child(3)::before { content: "Stage"; }
  tbody td:nth-child(4)::before { content: "Weight"; }
  tbody td:nth-child(5)::before { content: "Aircraft"; }
  tbody td:nth-child(6)::before { content: "Price"; }
  .original-media-grid > * { min-height: 15rem; }
  .existing-media img,
  .original-media-grid .production-placeholder { height: 15rem; min-height: 15rem; }
}

@media (max-width: 680px) {
  :root {
    --_typography---h1--font-size: clamp(2.65rem, 13vw, 3.65rem);
    --_typography---h2--font-size: clamp(2.2rem, 10vw, 3rem);
    --_typography---h3--font-size: clamp(1.55rem, 7vw, 2rem);
    --section-space: 4.5rem;
  }
  body { font-size: 1rem; line-height: 1.67; }
  .container { width: calc(100% - 2rem); }
  .row { gap: 1.5rem; }
  .section { padding-block: var(--section-space); }
  .hero { padding: 3.5rem 0 0; }
  .hero-copy h1 { max-width: 13ch; }
  .hero-deck { font-size: 1.14rem; }
  .byline { gap: .8rem; margin-top: 2rem; }
  .byline img { width: 2.85rem; }
  .byline span { font-size: .8rem; }
  .hero-media { margin-inline: -1rem; }
  .image-frame-hero { border-radius: 0; }
  .image-frame-hero img { height: auto; aspect-ratio: 4 / 3; border-radius: 0; }
  .image-frame-hero figcaption { padding: .75rem 1rem 0; }
  .intro-section { padding-top: 4.5rem; }
  .toc-card,
  html[data-variant="B"] .toc-card { margin: -4.5rem -1rem 3.75rem; padding: .75rem 1rem; }
  .toc-card ol { gap: 1.5rem; }
  .toc-card li { font-size: .85rem; }
  .intro-copy { margin-bottom: 4.5rem; }
  .intro-copy > .paragraph-xl:first-child { padding-left: 1rem; }
  .content-section { margin-bottom: 4.5rem; }
  .section-heading { margin-bottom: 2.5rem; padding-top: .9rem; }
  .section-heading .paragraph-lg { font-size: 1.08rem; }
  .type-grid { grid-template-columns: 1fr; }
  .info-card { padding: 1.75rem 0 2rem; }
  .callout,
  .statement-card,
  .cta-block,
  .checklist-section,
  .support-card { border-radius: var(--radius-md); }
  .callout { margin-bottom: 3.75rem; padding: 1.75rem; }
  .split-feature { margin: 3.75rem 0; }
  .production-placeholder { min-height: 14rem; }
  .statement-card { margin-top: 3.75rem; padding: 2rem 1.5rem; }
  .statement-card blockquote { font-size: 1.85rem; }
  .age-list { margin-bottom: 3.75rem; }
  .age-list article { grid-template-columns: 1fr; gap: .7rem; padding: 1.75rem 0; }
  .travel-mode-grid { grid-template-columns: 1fr; margin-bottom: 3.75rem; }
  .travel-mode-grid article { padding: 1.5rem 0 1.75rem; }
  .cta-block,
  .support-card { align-items: stretch; flex-direction: column; padding: 1.75rem; }
  .cta-block .button,
  .support-card .button { width: 100%; }
  tbody { grid-template-columns: 1fr; }
  tbody tr { padding: 1.2rem; }
  .recommendation-groups section { padding: 2.2rem 0; }
  .media-band figure { max-width: none; }
  .media-band img { aspect-ratio: 4 / 3; }
  .step-list { margin-bottom: 3.75rem; }
  .step-list li { grid-template-columns: 2.5rem 1fr; gap: 1rem; }
  .step-list li > span { width: 2.25rem; height: 2.25rem; }
  .photo-pair,
  .original-media-grid { grid-template-columns: 1fr; }
  .original-media-grid > :first-child { grid-column: auto; }
  .international-note { margin: 3.75rem 0; padding: 1.5rem; }
  .original-media-grid > *,
  .existing-media img,
  .original-media-grid .production-placeholder { height: auto; min-height: 14rem; }
  .accessory-columns > section { padding: 2rem 0; }
  .faq-list summary { gap: 1.25rem; padding: 1.35rem 0; font-size: 1.08rem; }
  .faq-list details p { padding: 0 1.5rem 1.5rem 0; }
  .checklist-section { padding: 2rem 1.5rem; }
  .checklist { grid-template-columns: 1fr; gap: 0; }
  .download-mockup { align-items: flex-start; flex-wrap: wrap; }
  .download-mockup .button { width: 100%; margin-left: 0; }
  .author-card { grid-template-columns: 6.5rem 1fr; gap: 1.25rem; margin-top: 3.75rem; padding: 2rem 0; align-items: start; }
  .author-card img { width: 6.5rem; }
  .author-card .eyebrow { margin-bottom: .8rem; }
  .signoff { margin-top: 3.75rem; }
  .prototype-switcher { bottom: .6rem; max-width: calc(100% - 1rem); gap: .45rem; padding: .4rem; }
  .prototype-switcher span { min-width: 8.5rem; }
  .prototype-switcher button { width: 2.75rem; height: 2.75rem; }
  .prototype-switcher strong { font-size: .75rem; }
  html[data-variant="B"] .hero { min-height: 42rem; padding: 0; }
  html[data-variant="B"] .hero-copy { left: 1rem; bottom: 2.5rem; width: calc(100% - 2rem); }
  html[data-variant="B"] .hero-copy h1 { font-size: clamp(2.7rem, 12vw, 3.65rem); }
  html[data-variant="B"] .hero-media { margin: 0; }
  html[data-variant="B"] .image-frame-hero img { height: 42rem; min-height: 42rem; aspect-ratio: auto; object-position: 58% 50%; }
  html[data-variant="B"] .hero-media::after { background: linear-gradient(0deg, rgb(26 25 23 / .86) 0%, rgb(26 25 23 / .28) 67%, rgb(26 25 23 / .06) 100%); }
  html[data-variant="C"] .hero { padding-bottom: 0; }
  html[data-variant="C"] .hero-copy,
  html[data-variant="C"] .hero-media { grid-column: 1 / -1; }
  html[data-variant="C"] .hero-media { margin-inline: -1rem; }
  html[data-variant="C"] .image-frame-hero img { height: auto; aspect-ratio: 4 / 3; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .001ms !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
}

@media print {
  .prototype-switcher, .toc-card { display: none !important; }
  .article-shell { display: block; }
  .section { padding: 2rem 0; }
  .hero { min-height: auto; padding: 2rem 0; color: black !important; background: white !important; }
  .hero-copy { grid-column: 1 / -1; }
  .hero-media { display: none; }
  .button { border-color: black; background: transparent; color: black; }
}