@font-face {
  font-family: "SkyShare Serif";
  src: url("../fonts/skyshare-serif-jp-subset.woff") format("woff");
  font-display: swap;
}

@font-face {
  font-family: "Outfit";
  src: url("../fonts/outfit-latin.woff2") format("woff2");
  font-weight: 300 800;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --navy: #071225;
  --text: #e6edf4;
  --muted: #a9bdcf;
  --cyan: #79e0e4;
  --line: #304358;
  --serif: "SkyShare Serif", "Hiragino Mincho ProN", "Yu Mincho", serif;
}

* { box-sizing: border-box; }
html { scroll-padding-top: 2rem; }
body {
  margin: 0;
  background: radial-gradient(ellipse at 80% 0, #13334a 0, transparent 38rem), var(--navy);
  color: var(--text);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.95;
  overflow-wrap: anywhere;
  -webkit-text-size-adjust: 100%;
}
a { color: var(--cyan); text-underline-offset: .3em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 3px solid var(--cyan); outline-offset: 5px; border-radius: 3px; }
img { display: block; max-width: 100%; height: auto; }
p { margin: 0 0 1.25rem; }
h1, h2, h3 { color: #f6f8fb; font-weight: 500; }
h1, h2 { font-family: var(--serif); }
h1 { margin: 1.1rem 0; font-size: clamp(2rem, 3.7vw, 3.2rem); line-height: 1.65; letter-spacing: .02em; }
h2 { margin: .5rem 0 1.4rem; font-size: clamp(1.5rem, 2.6vw, 2rem); line-height: 1.7; }
h3 { margin: 0 0 .5rem; font-size: 1.12rem; font-weight: 600; line-height: 1.7; }
.wrap { width: min(1160px, calc(100% - 64px)); margin-inline: auto; }
.skip-link { position: absolute; top: -8rem; left: 1rem; z-index: 10; padding: .6rem 1rem; background: var(--navy); }
.skip-link:focus { top: 1rem; }
.site-header { min-height: 94px; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: .65rem; font-family: "Outfit", sans-serif; font-size: 1.5rem; font-weight: 500; color: #fff; text-decoration: none; }
.header-link { font-size: .85rem; padding-block: .65rem; }
.breadcrumb { padding-top: 1.7rem; font-size: .8rem; color: var(--muted); }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: .5rem 1rem; list-style: none; padding: 0; margin: 0; }
.breadcrumb li + li::before { content: "/"; margin-right: 1rem; color: var(--muted); }
.guide-hero { display: grid; grid-template-columns: 1.12fr 1fr; align-items: center; gap: clamp(2rem, 5vw, 4.5rem); padding: 3rem 0 5rem; }
.hero-copy { min-width: 0; }
.eyebrow, .section-number { font-family: "Outfit", sans-serif; font-size: .75rem; letter-spacing: .16em; color: var(--cyan); }
.hero-subtitle { margin-bottom: 1.7rem; font-family: var(--serif); font-size: 1.2rem; color: var(--cyan); }
.byline { font-size: .75rem; color: var(--muted); margin: 1.6rem 0 0; }
.hero-photo { margin: 0; }
.hero-photo img { width: 100%; aspect-ratio: 1 / 1.13; object-fit: cover; border-radius: 180px 180px 8px 8px; border: 1px solid #486174; }
.hero-photo figcaption { padding-top: .8rem; font-size: .75rem; color: var(--muted); text-align: center; }
.guide-layout { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: clamp(2rem, 6vw, 6rem); border-top: 1px solid var(--line); padding-top: 3.5rem; }
.contents { position: sticky; top: 2rem; align-self: start; font-size: .85rem; }
.contents ol { margin: 0; padding-left: 1.5rem; color: var(--muted); }
.contents li { padding-left: .25rem; }
.contents a { display: inline-block; padding: .5rem 0; color: var(--muted); }
.contents a:hover { color: var(--cyan); }
.guide-body { max-width: 740px; min-width: 0; }
.guide-body section { margin-bottom: 3.5rem; padding-bottom: 2.5rem; border-bottom: 1px solid var(--line); }
.guide-body section:last-child { border-bottom: 0; margin-bottom: 0; }
.section-number { margin-bottom: .5rem; }
.steps { margin: 0; padding-left: 1.7rem; }
.steps li { padding-left: .5rem; margin-bottom: 1.8rem; }
.steps li::marker { color: var(--cyan); font-family: "Outfit", sans-serif; font-size: 1.2rem; }
.photo-tip { padding: 1.4rem 1.6rem; background: #10253a; border-left: 2px solid var(--cyan); }
.photo-tip p { margin: 0; font-size: .94rem; }
.photo-tip strong { color: var(--cyan); font-weight: 500; }
.reactions { display: grid; grid-template-columns: repeat(4, 1fr); gap: .6rem; list-style: none; padding: 0; margin: 1.5rem 0; }
.reactions li { text-align: center; padding: .6rem .25rem; color: var(--cyan); background: #10253a; border: 1px solid #385568; border-radius: 999px; font-size: .9rem; }
.faq { margin: 0; }
.faq dt { margin-top: 1.5rem; font-weight: 600; color: #f6f8fb; }
.faq dd { margin: .6rem 0 0; }
.download { margin: 1rem 0 3.5rem; padding: clamp(1.5rem, 5vw, 3.5rem); border: 1px solid #385568; border-radius: 8px; background: radial-gradient(ellipse at 50% 100%, #183b51, #0b1b30); text-align: center; }
.download p { color: var(--muted); }
.download .eyebrow { color: var(--cyan); }
.store-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; margin-top: 1.8rem; }
.site-footer { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1rem 2rem; border-top: 1px solid var(--line); padding-block: 1.8rem 2.5rem; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: .5rem 1.4rem; font-size: .8rem; }
.site-footer nav a { display: inline-block; padding-block: .5rem; color: var(--muted); }

@media (max-width: 899px) {
  .guide-hero { grid-template-columns: 1fr; gap: 2rem; padding-bottom: 3rem; }
  .desktop-break { display: none; }
  .hero-photo img { aspect-ratio: 16 / 9; border-radius: 6px; object-position: center 40%; }
  .guide-layout { grid-template-columns: 1fr; gap: 2.5rem; padding-top: 2rem; }
  .contents { position: static; }
  .contents ol { columns: 2; column-gap: 2rem; }
  .contents li { break-inside: avoid; }
  .guide-body { max-width: none; }
}

@media (max-width: 540px) {
  .wrap { width: calc(100% - 40px); }
  .site-header { min-height: 80px; gap: .8rem; }
  .brand { font-size: 1.3rem; }
  .brand img { width: 28px; height: 28px; }
  .header-link { max-width: 10em; font-size: .75rem; text-align: right; }
  .guide-hero { padding-top: 2rem; }
  .byline { font-size: .7rem; }
  .contents ol { columns: 1; }
  .guide-body section { padding-bottom: 1.5rem; margin-bottom: 2.5rem; }
  .reactions { grid-template-columns: repeat(2, 1fr); }
  .photo-tip { padding: 1rem 1.2rem; }
}

@media print {
  body { background: #fff; color: #111; }
  h1, h2, h3, a, .faq dt { color: #111; }
  .site-header, .contents, .store-links, .site-footer, .skip-link { display: none; }
  .wrap { width: 100%; }
  .guide-hero, .guide-layout { display: block; }
  .hero-photo { max-width: 400px; }
  .hero-photo img { aspect-ratio: 16 / 9; border-radius: 0; }
  .guide-body { max-width: none; }
  .photo-tip, .download, .reactions li { background: transparent; color: #111; }
}

.guide-screens { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px; margin:28px 0; }
.guide-screens figure { margin:0; min-width:0; }
.guide-screens img { width:100%; height:auto; border-radius:18px; border:1px solid #526077; }
.guide-screens figcaption { font-size:13px; line-height:1.8; margin-top:12px; }
.guide-screens figcaption strong { display:block; color:#fff; }
.screen-note { font-size:13px; }
@media(max-width:600px) { .guide-screens { grid-template-columns:1fr; gap:28px; } .guide-screens figure { max-width:280px; margin:auto; } }