:root {
  color-scheme: light;
  --paper: #fff;
  --ink: #262623;
  --muted: #6a6a63;
  --line: #deded7;
  --accent: #7c4d30;
  --display: 'Lora', Georgia, serif;
}
html[lang="ko"] { --display: 'Gowun Batang', 'Batang', serif; }
html[lang="ja"] { --display: 'Noto Serif JP', 'Hiragino Mincho ProN', serif; }
html[lang="zh-CN"] { --display: 'Noto Serif SC', 'Songti SC', serif; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 30px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 14px/1.8 -apple-system, BlinkMacSystemFont, 'Helvetica Neue', 'Apple SD Gothic Neo', sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, select { font: inherit; }
a:focus-visible, button:focus-visible, select:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
h1, h2, h3, p, figure, dl, dd { margin: 0; }
.page { max-width: 1510px; margin: auto; padding: 0 clamp(25px,4vw,62px); display: grid; grid-template-columns: 164px minmax(0,1fr); column-gap: clamp(45px,6vw,90px); }
.skip-link { position: absolute; top: -70px; left: 24px; padding: 12px; background: white; z-index: 10; }
.skip-link:focus { top: 12px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
.header { grid-column: 1; grid-row: 1 / 3; position: sticky; top: 0; align-self: start; display: flex; flex-direction: column; align-items: flex-start; height: 100dvh; min-height: 490px; padding: 41px 0 30px; }
.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand img { width: 24px; height: 24px; border-radius: 5px; }
.brand span { font-family: 'Lora', Georgia, serif; font-size: 46px; font-style: normal; font-weight: 400; letter-spacing: 0; line-height: 1.2; }
.header nav { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; margin-top: 61px; font-size: 13px; }
.header nav a { padding: 5px 0; text-underline-offset: 5px; }
.header nav a:hover { text-decoration: underline; }
.sidebar-footer { margin-top: auto; width: 100%; padding-top: 40px; }
.sidebar-note { max-width: 145px; font-size: 11px; line-height: 1.8; color: var(--muted); }
.language-control { display: flex; align-items: center; gap: 9px; margin-top: 17px; }
.language-control svg { width: 15px; height: 15px; stroke: var(--muted); stroke-width: 1.1; }
#language { width: 91px; min-height: 44px; padding: 8px 0; border: 0; background: transparent; color: var(--ink); font-size: 11px; cursor: pointer; }
main { grid-column: 2; min-width: 0; }
.hero { padding: 58px 0 37px; }
.mobile-status { display: none; }
.eyebrow { font-size: 11px; color: var(--muted); font-weight: 400; line-height: 1.7; }
h1 { margin: 28px 0 30px; font-family: var(--display); font-size: clamp(48px,5.15vw,76px); line-height: 1.3; font-weight: 400; letter-spacing: 0; word-break: keep-all; }
html[lang="en"] h1 { font-size: clamp(58px,5.6vw,84px); line-height: 1.16; letter-spacing: 0; }
html[lang="en"] h1 span:last-child { font-style: normal; }
html[lang="ja"] h1 { font-size: clamp(41px,4.25vw,64px); letter-spacing: 0; }
.hero-intro { display: flex; align-items: flex-end; justify-content: space-between; gap: 35px; }
.hero-description { max-width: 620px; font-size: 14px; line-height: 1.95; color: #55564f; word-break: keep-all; }
.text-link { flex: none; display: inline-flex; align-items: center; gap: 18px; padding: 7px 0; border-bottom: 1px solid var(--ink); font-size: 12px; white-space: nowrap; }
.text-link:hover { color: var(--accent); border-color: var(--accent); }
.preview-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; margin-bottom: 13px; }
.preview-product { font-family: 'Lora', Georgia, serif; font-size: 20px; letter-spacing: 0; }
.preview-product > span { font-family: -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', sans-serif; font-size: 11px; color: var(--muted); margin-left: 8px; }
.preview-tabs { display: flex; align-items: baseline; gap: 17px; font-size: 12px; }
.preview-tabs > span { color: #adada5; }
.preview-tabs button { min-width: 44px; min-height: 44px; padding: 7px 0; border: 0; background: transparent; color: var(--muted); font-size: 12px; cursor: pointer; }
.preview-tabs button[aria-pressed="true"] { color: var(--ink); text-decoration: underline; text-underline-offset: 6px; }
.preview-tabs button:hover { color: var(--accent); }
.preview-image-link { display: block; min-width: 0; }
.preview img { display: block; width: 100%; height: auto; aspect-ratio: 4/3; object-fit: contain; background: #242a25; }
.preview figcaption { display: flex; justify-content: space-between; gap: 20px; margin-top: 10px; color: var(--muted); font-size: 11px; line-height: 1.8; }
.preview figcaption a { flex: none; text-decoration: underline; text-underline-offset: 4px; }
.section { margin-top: 68px; padding-top: 24px; border-top: 1px solid var(--ink); }
h2 { font-family: var(--display); font-size: clamp(29px,2.7vw,39px); line-height: 1.4; letter-spacing: 0; font-weight: 400; word-break: keep-all; text-wrap: balance; }
.title-line { display: block; }
.section-heading { display: grid; grid-template-columns: 1fr 1fr; column-gap: 45px; }
.section-heading .eyebrow { grid-column: 1 / -1; margin-bottom: 25px; }
.section-heading > p:last-child { align-self: center; color: #55564f; font-size: 13px; line-height: 1.95; word-break: keep-all; }
.features { margin-top: 38px; }
.features > div { display: grid; grid-template-columns: 230px 1fr; gap: 30px; border-top: 1px solid var(--line); padding: 22px 0; }
.features dt { font-family: var(--display); font-size: 22px; letter-spacing: 0; line-height: 1.6; text-wrap: balance; }
.features dd { max-width: 650px; font-size: 13px; line-height: 1.95; color: #55564f; word-break: keep-all; }
.installation { margin-top: 52px; }
.installation-heading .eyebrow { margin-bottom: 24px; }
.installation-heading h2 { max-width: 660px; }
.products { margin: 35px 0 31px; }
.products article { display: grid; grid-template-columns: 205px 1fr; gap: 2px 30px; padding: 24px 0; border-top: 1px solid var(--line); scroll-margin-top: 30px; }
.product-type { grid-column: 1; grid-row: 1; font-size: 11px; line-height: 1.7; color: var(--muted); }
.products h3 { grid-column: 1; grid-row: 2 / 4; font-family: 'Lora', Georgia, serif; font-size: 27px; line-height: 1.35; font-weight: 400; letter-spacing: 0; margin-top: 7px; }
.products h3 span { display: block; font: 11px/1.8 -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', sans-serif; color: var(--muted); margin-top: 8px; letter-spacing: 0; }
.products article > p:not(.product-type) { grid-column: 2; grid-row: 1 / 3; font-size: 13px; line-height: 1.95; color: #55564f; word-break: keep-all; }
.products article > p.compatibility { grid-row: 3; margin-top: 9px; font-size: 11px; color: var(--muted); }
.downloads table { width: 100%; border-collapse: collapse; text-align: left; }
.downloads th, .downloads td { padding: 15px 14px; border-bottom: 1px solid var(--line); }
.downloads thead { border-top: 1px solid var(--ink); }
.downloads thead th { font-size: 12px; font-weight: 400; color: var(--muted); }
.downloads tbody th { width: 28%; font-size: 14px; font-weight: 500; }
.downloads td { width: 36%; font-size: 12px; color: var(--muted); }
.format { display: inline-block; min-width: 55px; padding-right: 10px; color: var(--ink); font-size: 11px; }
.download-note { margin-top: 13px; font-size: 11px; line-height: 1.8; color: var(--muted); }
.release { padding-top: 24px; margin-top: 55px; }
.release .eyebrow { margin-bottom: 25px; }
.release h2 { max-width: 700px; font-size: 32px; margin-bottom: 22px; }
.release > div > p { max-width: 700px; font-size: 13px; line-height: 1.95; color: #55564f; word-break: keep-all; }
.footer { grid-column: 2; padding: 27px 0 30px; border-top: 1px solid var(--line); margin-top: 45px; }
.footer p, .footer small { color: var(--muted); font-size: 11px; line-height: 1.9; }
.footer small { display: block; margin-top: 13px; }
.footer-bottom { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; }
.footer-bottom a { padding: 10px 0; font-size: 12px; text-decoration: underline; text-underline-offset: 5px; }
.header nav [aria-current="page"] { text-decoration: underline; }
.sponsor-main .hero { padding-bottom: 0; }
.sponsor-main h1 { margin-bottom: 24px; }
.sponsor-intro { max-width: 580px; font-size: 15px; line-height: 1.95; color: #55564f; word-break: keep-all; }
.sponsor-byline { margin-top: 20px; font-size: 12px; color: var(--muted); }
.sponsor-methods { margin-top: 48px; }
.sponsor-methods > .eyebrow { margin-bottom: 24px; }
.sponsor-method { display: grid; grid-template-columns: 230px minmax(0,1fr); gap: 30px; padding: 27px 0; border-top: 1px solid var(--line); }
.sponsor-method h2 { font-size: 25px; text-wrap: balance; }
.sponsor-method > div > p { max-width: 520px; font-size: 13px; line-height: 1.95; color: #55564f; word-break: keep-all; }
.sponsor-status { display: block; margin-top: 16px; font-size: 11px; color: var(--muted); }
.sponsor-region { display: block; margin-top: 6px; font: 11px/1.8 -apple-system, BlinkMacSystemFont, sans-serif; color: var(--muted); }
.sponsor-note { margin-top: 18px; padding-top: 26px; border-top: 1px solid var(--ink); }
.sponsor-note h2 { font-size: 25px; margin-bottom: 13px; }
.sponsor-note p { max-width: 650px; font-size: 13px; line-height: 1.95; color: #55564f; word-break: keep-all; }
.sponsor-main .text-link { margin-top: 30px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 24px; }
.guide-invitation { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.guide-invitation h2 { font-size: 30px; }
.guide-invitation p { max-width: 480px; font-size: 13px; color: #55564f; }
.guide-invitation .text-link { margin-top: 15px; }
.guide-main .hero { padding-bottom: 35px; border-bottom: 1px solid var(--ink); }
.guide-main h1 { font-size: clamp(39px,4.7vw,64px); }
.guide-intro { max-width: 650px; font-size: 15px; color: #55564f; line-height: 1.95; word-break: keep-all; }
.guide-layout { display: grid; grid-template-columns: minmax(0,1fr) 160px; gap: 50px; align-items: start; }
.guide-article { grid-column: 1; grid-row: 1; min-width: 0; }
.guide-toc { grid-column: 2; grid-row: 1; position: sticky; top: 30px; display: flex; flex-direction: column; align-items: flex-start; gap: 5px; padding-top: 29px; }
.guide-toc .eyebrow { margin-bottom: 8px; }
.guide-toc a { display: inline-block; padding: 5px 0; font-size: 12px; line-height: 1.6; text-underline-offset: 5px; }
.guide-toc a:hover { text-decoration: underline; }
.guide-chapter { padding: 32px 0 36px; border-bottom: 1px solid var(--line); overflow-wrap: anywhere; }
.guide-section-heading { display: flex; align-items: baseline; gap: 16px; margin-bottom: 22px; }
.guide-number { color: var(--muted); font-size: 11px; flex: none; }
.guide-section-heading h2 { font-size: clamp(25px,2.5vw,31px); text-wrap: initial; }
.guide-chapter > p { margin-top: 18px; }
.guide-chapter p, .guide-notes dd { font-size: 14px; color: #55564f; line-height: 1.95; }
.guide-table { margin: 23px 0 17px; }
.guide-table table { width: 100%; border-collapse: collapse; text-align: left; }
.guide-table th, .guide-table td { padding: 16px 12px 16px 0; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 12px; line-height: 1.8; }
.guide-table thead th { color: var(--muted); font-weight: 400; font-size: 11px; }
.guide-table tbody th { width: 24%; min-width: 95px; font-family: 'Lora', Georgia, serif; font-weight: 400; font-size: 16px; }
.guide-table tbody td:nth-child(2) { width: 26%; }
.guide-table td { color: #55564f; }
.guide-chapter p.guide-footnote { font-size: 12px; color: var(--muted); }
.guide-inline-link { display: inline-block; padding: 10px 0; font-size: 12px; text-decoration: underline; text-underline-offset: 5px; }
.guide-steps { margin: 27px 0 0; padding-left: 21px; }
.guide-steps li { padding-left: 8px; margin-top: 22px; }
.guide-steps li::marker { font-size: 12px; color: var(--muted); }
.guide-steps li + li { margin-top: 42px; }
.guide-shot { margin: 24px 0 31px; }
.guide-picture { display: block; overflow: hidden; background: #f1ede5; border: 1px solid var(--line); }
.guide-picture:hover { border-color: var(--muted); }
.guide-picture img { display: block; width: 100%; height: auto; }
.guide-shot--host { max-width: 530px; }
.guide-shot--host .guide-picture { aspect-ratio: 4/5; }
.guide-shot--host img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.guide-shot--install .guide-picture { aspect-ratio: 4.3/1; }
.guide-shot--address .guide-picture { aspect-ratio: 16/5; }
.guide-shot figcaption { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; margin-top: 10px; font-size: 11px; color: var(--muted); line-height: 1.8; }
.guide-shot figcaption a { flex: none; padding: 4px 0; text-decoration: underline; text-underline-offset: 4px; }
.guide-steps h3, .guide-notes dt { margin-bottom: 7px; font-size: 15px; line-height: 1.7; font-weight: 500; }
.guide-notes { margin-top: 25px; }
.guide-notes > div { margin-top: 25px; }
.guide-questions { margin-top: 25px; }
.guide-questions details { padding: 17px 0; border-top: 1px solid var(--line); }
.guide-questions summary { cursor: pointer; min-height: 30px; padding: 4px 4px 4px 0; font-size: 14px; line-height: 1.7; }
.guide-questions summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.guide-questions details p { margin: 12px 0 5px; }
.guide-article > .text-link { margin-top: 26px; }
html[lang="ja"] .page :is(h1,h2,p,dd), html[lang="zh-CN"] .page :is(h1,h2,p,dd) { word-break: normal; }
@media (min-width: 1450px) { .hero { padding-top: 76px; } }
@media (max-width: 1100px) {
  .page { grid-template-columns: 140px minmax(0,1fr); column-gap: 42px; }
  .brand span { font-size: 42px; }
  .hero-intro { display: block; }
  .text-link { margin-top: 19px; }
  .section-heading { column-gap: 30px; }
  .features > div { grid-template-columns: 200px 1fr; gap: 20px; }
  .products article { grid-template-columns: 175px 1fr; gap: 20px; }
  .features dt { font-size: 20px; }
  .products h3 { font-size: 25px; }
  .guide-layout { grid-template-columns: minmax(0,1fr); gap: 0; }
  .guide-toc { position: static; grid-column: 1; grid-row: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 4px 24px; padding: 22px 0; border-bottom: 1px solid var(--line); }
  .guide-toc .eyebrow { grid-column: 1 / -1; }
  .guide-article { grid-row: 2; }
}
@media (max-width: 800px) {
  .page { display: block; padding: 0 25px; }
  .header { position: static; height: 82px; min-height: 0; flex-direction: row; align-items: center; gap: 26px; padding: 0; border-bottom: 1px solid var(--line); }
  .brand span { font-size: 38px; }
  .brand img { width: 22px; height: 22px; }
  .header nav { flex-direction: row; margin-top: 0; margin-left: auto; gap: 18px; font-size: 11px; }
  .header nav .sponsor-nav { display: none; }
  .sidebar-footer { display: contents; }
  .sidebar-note { display: none; }
  .language-control { margin-top: 0; margin-left: auto; }
  .language-control svg { display: none; }
  #language { width: 80px; }
  .hero { padding: 38px 0 29px; }
  .mobile-status { display: block; margin-top: 16px; font-size: 11px; color: var(--muted); }
  h1 { font-size: 58px; margin: 22px 0 25px; }
  html[lang="ja"] h1 { font-size: 45px; }
  html[lang="en"] h1 { font-size: 64px; }
  .hero-intro { display: flex; gap: 30px; }
  .hero-description { max-width: 540px; font-size: 13px; }
  .text-link { margin-top: 0; }
  .section { margin-top: 48px; }
  h2 { font-size: 32px; }
  .features > div { grid-template-columns: 200px 1fr; gap: 24px; }
  .products article { grid-template-columns: 180px 1fr; gap: 24px; }
  .products h3 { font-size: 26px; }
  .release h2 { font-size: 30px; }
}
@media (max-width: 550px) {
  .page { padding: 0 21px; }
  .header { height: 75px; gap: 17px; }
  .brand span { font-size: 38px; }
  .header nav { display: flex; gap: 0; }
  .header nav a:not(.help-nav) { display: none; }
  .language-control svg { display: block; }
  .hero { padding-top: 29px; }
  .eyebrow { font-size: 11px; }
  h1 { font-size: clamp(34px,9.7vw,49px); line-height: 1.4; letter-spacing: 0; margin: 21px 0 24px; }
  html[lang="ja"] h1 { font-size: clamp(29px,7.8vw,40px); letter-spacing: 0; }
  html[lang="en"] h1 { font-size: clamp(38px,11.5vw,62px); line-height: 1.18; }
  .hero-intro { display: block; }
  .hero-description { font-size: 13px; }
  .text-link { margin-top: 19px; font-size: 11px; }
  .preview-heading { gap: 10px; margin-bottom: 9px; }
  .preview-product { font-size: 20px; }
  .preview-product > span { margin-left: 5px; font-size: 11px; }
  .preview-tabs { gap: 13px; }
  .preview-tabs button { font-size: 11px; }
  .preview figcaption { font-size: 11px; gap: 13px; }
  .section { margin-top: 38px; padding-top: 19px; }
  .section-heading { display: block; }
  .section-heading .eyebrow { margin-bottom: 22px; }
  h2 { font-size: 28px; }
  .section-heading > p:last-child { margin-top: 22px; font-size: 13px; }
  .features { margin-top: 28px; }
  .features > div { grid-template-columns: 1fr; gap: 10px; padding: 21px 0; }
  .features dt { font-size: 23px; }
  .features dd { font-size: 13px; }
  .installation { margin-top: 26px; }
  .installation-heading h2 { font-size: 27px; }
  .products { margin-top: 25px; }
  .products article { display: block; padding: 24px 0; }
  .products h3 { display: flex; align-items: baseline; gap: 15px; margin: 9px 0 15px; font-size: 28px; }
  .products h3 span { margin: 0; }
  .products article > p:not(.product-type) { font-size: 13px; }
  .products article > p.compatibility { margin-top: 12px; font-size: 11px; }
  .downloads th, .downloads td { padding: 14px 9px; vertical-align: top; }
  .downloads thead th { font-size: 12px; }
  .downloads tbody th { font-size: 12px; }
  .downloads td { font-size: 12px; line-height: 1.7; }
  .format { display: block; padding: 0; min-width: 0; font-size: 11px; }
  .release { margin-top: 35px; }
  .release h2 { font-size: 27px; }
  .footer { margin-top: 32px; padding-top: 21px; }
  .footer p { font-size: 11px; }
  .sponsor-intro { font-size: 14px; }
  .sponsor-methods { margin-top: 34px; }
  .sponsor-method { grid-template-columns: minmax(0,1fr); gap: 15px; padding: 24px 0; }
  .sponsor-method h2, .sponsor-note h2 { font-size: 25px; }
  .sponsor-status { margin-top: 12px; }
  .guide-invitation { grid-template-columns: 1fr; gap: 14px; }
  .guide-invitation h2 { font-size: 27px; }
  .guide-main h1 { font-size: clamp(32px,9.7vw,48px); }
  .guide-intro { font-size: 14px; }
  .guide-section-heading { gap: 12px; margin-bottom: 18px; }
  .guide-section-heading h2 { font-size: 26px; }
  .guide-chapter { padding: 27px 0 30px; }
  .guide-steps { padding-left: 18px; }
  .guide-steps li { padding-left: 3px; }
  .guide-shot figcaption { display: block; }
  .guide-shot figcaption a { display: inline-block; margin-top: 6px; min-height: 32px; }
  .guide-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
  .guide-table tbody tr { display: grid; grid-template-columns: 105px minmax(0,1fr); padding: 16px 0; border-bottom: 1px solid var(--line); }
  .guide-table tbody th { width: auto; min-width: 0; grid-column: 1; grid-row: 1 / 3; padding: 0 12px 0 0; }
  .guide-table tbody td { width: auto; grid-column: 2; border: 0; padding: 0; }
  .guide-table tbody td:nth-child(2) { width: auto; color: var(--ink); margin-bottom: 8px; }
  .guide-table tbody th { border: 0; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* Mobile keyboard names remain visible when the handbook table stacks. */
.guide-chapter > h3 { margin: 34px 0 12px; font-family: var(--display); font-size: 23px; line-height: 1.5; font-weight: 400; }
.guide-shortcut-device { display: none; }
@media (max-width: 650px) {
  .guide-shortcut-device { display: block; color: var(--muted); font-size: 12px; }
}

/* The four native capture choices keep the established preview controls. */
.preview-tabs { flex-wrap: wrap; }
.mobile-release { margin: 25px 0 32px; max-width: 640px; }
.mobile-release h3 { font-size: 18px; font-weight: 500; margin-bottom: 8px; }
.content-updated { color: var(--muted); font-size: 11px; }
.footer > a { display: inline-block; margin-top: 15px; text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 550px) { .preview-heading { align-items: flex-start; flex-direction: column; gap: 4px; } .footer-bottom { flex-wrap: wrap; gap: 12px; } }
.not-found { max-width: 700px; margin: 12vh auto; padding: 25px; } .not-found p { margin: 20px 0; } .not-found a { text-decoration: underline; }