:root {
  --ink: #202121;
  --muted: #666b69;
  --paper: #ffffff;
  --line: #dedfdd;
  --accent: #ffab18;
  --dark: #111211;
  --green: #234a3c;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}
* { box-sizing: border-box; letter-spacing: 0; }
body { margin: 0; line-height: 1.55; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { font-weight: 600; line-height: 1.15; text-wrap: balance; }
p { text-wrap: pretty; }
a, button, summary { touch-action: manipulation; }
:focus-visible { outline: 3px solid #267659; outline-offset: 5px; }
[hidden] { display: none !important; }
.skip-link { position: fixed; z-index: 10; top: 8px; left: 12px; padding: 10px 20px; background: white; transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.site-header { height: 68px; border-bottom: 1px solid var(--line); background: #fff; }
.nav-inner, .footer-inner { width: min(1120px, calc(100% - 64px)); margin: auto; display: flex; align-items: center; }
.nav-inner { height: 100%; gap: 40px; }
.brand { display: flex; align-items: center; gap: 9px; font-weight: 650; font-size: 20px; }
.brand img { flex: none; width: 44px; height: 44px; margin-inline: -6px; }
.site-header nav { display: flex; gap: 30px; margin-left: auto; font-size: 14px; }
.site-header nav a, .language { display: flex; align-items: center; min-height: 44px; }
.site-header a:hover, .site-footer a:hover { color: #936000; }
.language { border-left: 1px solid var(--line); padding-left: 26px; font-size: 13px; }
.hero { background: var(--dark); color: #f6f7f5; position: relative; height: calc(100svh - 122px); min-height: 590px; max-height: 1000px; display: grid; grid-template-rows: auto minmax(0, 1fr); gap: 24px; padding: 30px 24px 0; overflow: hidden; }
.hero-copy { position: relative; z-index: 1; text-align: center; }
.eyebrow { font-size: 12px; font-weight: 600; margin-bottom: 16px; }
.hero .eyebrow { color: #b7bab6; margin-bottom: 8px; }
.hero h1 { font-size: 64px; line-height: 1.05; margin-bottom: 12px; }
.hero-lead { font-size: 30px; font-weight: 550; line-height: 1.2; }
.hero-intro { font-size: 16px; color: #b7bab6; margin: 14px 0 18px; }
.hero-intro br { display: none; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 16px; padding: 12px 22px; min-height: 48px; background: var(--accent); color: #151611; border-radius: 6px; font-size: 14px; font-weight: 600; transition: background .18s, transform .18s; }
.button:hover { background: #ffbd49; transform: translateY(-2px); }
.button span { font-size: 18px; }
.hero :focus-visible { outline-color: var(--accent); }
.requirement { color: #aaaead; font-size: 11px; margin-top: 10px; }
.hero-media { min-height: 0; display: flex; justify-content: center; align-items: flex-start; }
.hero-media .screenshot-link { height: 100%; max-width: 1120px; }
.hero-media img { width: auto; height: 100%; object-fit: contain; object-position: top; }
.screenshot-link { display: block; cursor: zoom-in; }
/* Follow the captured macOS continuous corners without adding a second radius. */
.screenshot-link img, .guide-figure img, .image-dialog img {
  --window-contour: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 2720 1440' preserveAspectRatio='none'%3E%3Cpath fill='white' d='M80 .75H2640C2685 .75 2691 3 2704 16C2717 29 2719.25 35 2719.25 80V1360C2719.25 1405 2717 1411 2704 1424C2691 1437 2685 1439.25 2640 1439.25H80C35 1439.25 29 1437 16 1424C3 1411 .75 1405 .75 1360V80C.75 35 3 29 16 16C29 3 35 .75 80 .75Z'/%3E%3C/svg%3E");
  -webkit-mask: var(--window-contour) center / 100% 100% no-repeat;
  mask: var(--window-contour) center / 100% 100% no-repeat;
}
.section { padding: 100px 32px; }
.content-width, .workspace-gallery { width: min(1120px, 100%); margin: auto; }
.reading-width { width: min(720px, 100%); margin: auto; }
.section-intro { width: min(690px, 100%); margin: 0 auto 48px; text-align: center; }
.section-intro .eyebrow { color: var(--muted); }
h2 { font-size: 40px; }
.section-intro > p:last-child:not(.eyebrow) { color: var(--muted); font-size: 18px; margin-top: 22px; }
.workflow { scroll-margin-top: 28px; }
.gallery-tabs { display: none; }
.gallery-tabs[role="tablist"] { display: grid; grid-template-columns: repeat(4, 1fr); width: min(680px, 100%); margin: 0 auto 36px; border-bottom: 1px solid var(--line); }
.gallery-tabs button { cursor: pointer; appearance: none; border: 0; border-bottom: 2px solid transparent; background: transparent; color: var(--muted); height: 56px; padding: 8px; display: flex; align-items: center; justify-content: center; gap: 9px; font-size: 15px; white-space: nowrap; }
.gallery-tabs button[aria-selected="true"] { color: var(--ink); border-color: var(--ink); font-weight: 600; }
.gallery-tabs button:hover { color: #936000; }
.tab-number { font-size: 11px; color: #797e79; font-variant-numeric: tabular-nums; }
.panel-copy { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: start; min-height: 138px; padding: 0 32px 26px; }
.panel-copy h3 { font-size: 27px; max-width: 410px; }
.panel-copy p { font-size: 16px; color: var(--muted); }
.gallery-panel { margin-bottom: 36px; }
.gallery-panel[role="tabpanel"] { margin-bottom: 0; }
.gallery-panel img { width: 100%; aspect-ratio: 17 / 9; object-fit: contain; }
.caption { font-size: 12px; color: var(--muted); text-align: center; margin-top: 18px; }
.principles { background: #f5f6f4; }
.principle-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; }
.principle { border-top: 1px solid #cfd2cf; padding-top: 24px; }
.number { display: block; color: #757b75; font-size: 12px; margin-bottom: 30px; font-variant-numeric: tabular-nums; }
.principle h3 { font-size: 24px; margin-bottom: 18px; }
.principle p, .boundary-grid p { font-size: 16px; color: var(--muted); }
.text-link { display: inline-block; color: var(--green); font-size: 15px; padding: 10px 0; margin-top: 22px; }
.text-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.principles .content-width > .text-link { margin-top: 40px; }
.boundaries { background: #e9efeb; }
.boundaries .section-intro { margin-left: 0; text-align: left; }
.boundary-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; }
.boundary-grid h3 { font-size: 21px; margin-bottom: 16px; }
.boundary-grid p { color: #4f5f55; }
.faq h2 { margin-bottom: 40px; }
details { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-size: 18px; font-weight: 550; padding: 24px 32px 24px 0; position: relative; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: '+'; position: absolute; right: 2px; top: 23px; font-weight: 400; }
details[open] summary::after { content: '−'; }
details p { color: var(--muted); font-size: 16px; padding: 0 30px 26px 0; }
.download-section { background: var(--dark); color: #f6f7f5; text-align: center; }
.download-icon { width: 120px; height: 120px; margin: 0 auto 14px; }
.download-section .eyebrow { color: #babeba; }
.download-section h2 { margin-bottom: 26px; }
.download-section .reading-width > p:not(.eyebrow) { color: #babeba; font-size: 16px; }
.download-section .button { margin: 28px 0 20px; }
.download-section p.small { font-size: 12px !important; }
.site-footer { padding: 32px; background: #f5f6f4; }
.footer-inner { width: min(1120px, 100%); flex-wrap: wrap; gap: 28px; }
.footer-brand { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; }
.footer-brand img { width: 40px; height: 40px; margin-inline: -6px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 24px; margin-left: auto; font-size: 12px; }
.site-footer nav a { min-height: 32px; display: flex; align-items: center; }
.site-footer p { width: 100%; font-size: 11px; color: var(--muted); border-top: 1px solid var(--line); padding-top: 20px; }
.document-body { padding: 80px 0; }
.document-header { border-bottom: 1px solid var(--line); padding-bottom: 40px; margin-bottom: 48px; }
.document-header h1 { font-size: 52px; margin-bottom: 22px; }
.document-lead { font-size: 24px; color: var(--muted); }
.updated { color: var(--muted); font-size: 12px; margin-top: 20px; }
.document-body section { margin-bottom: 40px; }
.document-body h2 { font-size: 24px; margin-bottom: 16px; }
.document-body section p { font-size: 17px; line-height: 1.8; color: #555c57; overflow-wrap: anywhere; }
.document-body section a { color: var(--green); text-decoration: underline; text-underline-offset: 4px; }
.guide-toc { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 32px; padding: 24px 0; margin-bottom: 48px; border-block: 1px solid var(--line); font-size: 14px; }
.guide-toc a { display: block; padding: 7px 0; color: var(--green); }
.guide-toc a:hover { text-decoration: underline; }
.guide-figure { margin: 28px 0; }
.guide-figure img { width: 100%; }
.guide-figure a { display: block; cursor: zoom-in; }
.guide-figure figcaption { margin-top: 12px; font-size: 11px; color: var(--muted); }
.method-link { margin-top: 8px; }
.method-body h1 { font-size: 48px; }
.method-example { margin: 28px 0 0; padding: 24px; background: #f5f6f4; border-block: 1px solid var(--line); }
.method-example figcaption { font-size: 12px; color: var(--muted); margin-bottom: 20px; }
.method-example pre { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; font-size: 15px; line-height: 1.9; }
.method-example code, .method-key code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.method-key { margin: 0 0 24px; }
.method-key > div { display: grid; grid-template-columns: 160px 1fr; gap: 20px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.method-key dt { font-size: 14px; font-weight: 600; }
.method-key dt code { color: var(--green); margin-right: 8px; }
.method-key dd { margin: 0; font-size: 14px; color: var(--muted); }
.method-steps { padding-left: 24px; margin: 28px 0; }
.method-steps li { padding: 0 0 24px 8px; }
.method-steps li::marker { color: var(--green); font-weight: 600; }
.method-steps h3 { font-size: 18px; margin-bottom: 8px; }
.method-resources { padding-left: 20px; margin-block: 24px; }
.method-resources li { margin: 10px 0; overflow-wrap: anywhere; }
.method-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 28px; margin-top: 32px; }
.method-actions .text-link { margin: 0; }
.document-body .method-actions .button { color: #151611; text-decoration: none; }
.method-attribution { font-size: 12px; color: var(--muted); border-top: 1px solid var(--line); padding-top: 24px; }
.guide-invitation, .support-guide { margin-top: 32px; padding-top: 24px; }
.guide-invitation p, .support-guide p { font-size: 20px; font-weight: 550; }
.guide-invitation .text-link, .support-guide .text-link { margin-top: 8px; }
.support-guide { border-bottom: 1px solid var(--line); padding: 0 0 24px; margin-bottom: 40px; }
.document-body section { scroll-margin-top: 32px; }
.image-dialog { width: min(96vw, 1800px); max-width: none; height: auto; max-height: 95dvh; padding: 50px 16px 16px; border: 0; border-radius: 8px; background: #f3f4f2; overflow: auto; }
.image-dialog::backdrop { background: #000c; }
.image-dialog img { width: 100%; height: auto; }
.dialog-close { position: absolute; top: 6px; right: 12px; width: 40px; height: 40px; border: 0; border-radius: 50%; background: transparent; color: var(--ink); font-size: 30px; cursor: pointer; }
.dialog-close:hover { background: #dedfdb; }
html:has(dialog[open]) { overflow: hidden; }
[aria-current="page"] { font-weight: 650; }
@media (min-width: 1000px) and (max-height: 780px) {
  .hero { padding-top: 20px; gap: 16px; min-height: 560px; }
  .hero h1 { font-size: 52px; }
  .hero-lead { font-size: 26px; }
  .hero-lead br { display: none; }
  .hero-intro { margin: 8px 0 12px; }
}
@media (max-width: 800px) {
  .nav-inner { width: calc(100% - 40px); gap: 22px; }
  .site-header nav { gap: 20px; }
  .language { padding-left: 18px; }
  .hero { min-height: 560px; max-height: 780px; }
  .section { padding: 72px 24px; }
  h2 { font-size: 34px; }
  .panel-copy { padding: 0 0 24px; gap: 24px; min-height: 170px; }
  .panel-copy h3 { font-size: 24px; }
  .principle-grid { gap: 24px; }
  .principle h3 { font-size: 21px; }
  .boundary-grid { gap: 36px; }
  .document-body { width: calc(100% - 48px); }
}
@media (max-width: 540px) {
  .site-header { height: 60px; }
  .nav-inner { gap: 16px; width: calc(100% - 32px); }
  .brand { font-size: 18px; gap: 4px; }
  .brand img { width: 40px; height: 40px; }
  .site-header nav { gap: 0; }
  .site-header nav a:not(:last-child) { display: none; }
  .language { padding-left: 14px; }
  .hero { height: calc(100svh - 114px); min-height: 505px; max-height: 650px; padding: 28px 16px 0; gap: 26px; }
  .hero h1 { font-size: 50px; margin-bottom: 14px; }
  .hero-lead { font-size: 27px; }
  .hero-intro { font-size: 15px; margin: 16px auto 20px; max-width: 290px; }
  .hero-intro br { display: initial; }
  .hero .eyebrow { font-size: 11px; }
  .hero-media { align-items: end; }
  .hero-media .screenshot-link { height: auto; width: 100%; }
  .hero-media img { width: 100%; height: auto; }
  .requirement { font-size: 10px; }
  .section { padding: 64px 22px; }
  h2 { font-size: 30px; }
  .section-intro { text-align: left; margin-bottom: 32px; }
  .section-intro > p:last-child:not(.eyebrow) { font-size: 16px; margin-top: 18px; }
  .gallery-tabs[role="tablist"] { margin-bottom: 28px; }
  .gallery-tabs button { font-size: 12px; height: 48px; padding: 4px 2px; }
  .tab-number { display: none; }
  .panel-copy { display: block; min-height: 180px; padding-bottom: 24px; }
  .panel-copy h3 { font-size: 23px; margin-bottom: 14px; }
  .panel-copy p { font-size: 15px; }
  .caption { font-size: 10px; }
  .principle-grid, .boundary-grid { grid-template-columns: 1fr; gap: 32px; }
  .number { margin-bottom: 16px; }
  .principle h3 { font-size: 23px; }
  .faq h2 { margin-bottom: 24px; }
  summary { font-size: 16px; }
  .site-footer { padding: 24px; }
  .footer-inner { gap: 16px; }
  .site-footer nav { width: 100%; margin-left: 0; gap: 22px; }
  .document-body { padding: 56px 0; }
  .document-header h1 { font-size: 42px; }
  .method-body h1 { font-size: 32px; }
  .method-example { padding: 18px 12px; }
  .method-example pre { font-size: 12px; }
  .method-key > div { grid-template-columns: 1fr; gap: 4px; }
  .document-lead { font-size: 21px; }
  .document-body h2 { font-size: 22px; }
  .document-body section p { font-size: 16px; }
  .guide-toc { grid-template-columns: 1fr; }
  .image-dialog { width: 96vw; padding: 50px 8px 8px; }
  .image-dialog img { min-width: 850px; max-width: none; }
}
@media (max-width: 540px) and (max-height: 740px) {
  .hero { min-height: 0; padding-top: 20px; gap: 18px; }
  .hero .eyebrow, .hero-intro { display: none; }
  .hero h1 { font-size: 44px; }
  .hero-lead { margin-bottom: 18px; }
}
.workflow { padding-top: 32px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}