:root { --ink: #1f2328; --muted: #5b6470; --line: #e3e6ea; --soft: #f5f7f8; --accent: #0a7896; --bg: #ffffff; }
@media (prefers-color-scheme: dark) {
  :root { --ink: #e8eaed; --muted: #a2a9b3; --line: #2c3138; --soft: #1d2126; --accent: #67cde3; --bg: #15181c; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.8 -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif; }
a { color: var(--accent); }

header.site { border-bottom: 1px solid var(--line); }
header.site .bar, header.site nav, main, footer.site { max-width: 880px; margin: 0 auto; padding-left: 20px; padding-right: 20px; }
header.site .bar { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 800; font-size: 20px; color: var(--ink); text-decoration: none; }
.brand img { border-radius: 7px; }
.login { font-weight: 700; text-decoration: none; border: 1px solid var(--accent); border-radius: 8px; padding: 4px 14px; }
header.site nav { display: flex; flex-wrap: wrap; gap: 4px 18px; padding-top: 8px; padding-bottom: 12px; font-size: 14px; }
header.site nav a { color: var(--muted); text-decoration: none; }
header.site nav a[aria-current="page"] { color: var(--ink); font-weight: 700; }

main { padding-top: 40px; padding-bottom: 56px; }
h1 { font-size: 30px; line-height: 1.4; margin: 0 0 12px; }
h2 { font-size: 20px; margin: 44px 0 8px; }
h3 { font-size: 16px; margin: 0 0 4px; }
.lead { color: var(--muted); margin: 0 0 24px; }
.hero h1 { font-size: 34px; }
.button { display: inline-block; background: var(--accent); color: #fff; text-decoration: none; padding: 12px 24px; border-radius: 10px; font-weight: 700; }
@media (prefers-color-scheme: dark) { .button { color: #0b1f26; } }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin: 16px 0; }
.card { background: var(--soft); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

.steps { padding-left: 1.4em; }
.steps li { margin-bottom: 8px; }
.steps strong { display: block; }

.shot { margin: 20px 0; }
.shot .placeholder { aspect-ratio: 16 / 10; border: 1px dashed var(--line); border-radius: 12px; background: var(--soft); display: grid; place-items: center; color: var(--muted); font-size: 14px; }
.shot img { width: 100%; border: 1px solid var(--line); border-radius: 12px; }
.shot figcaption { color: var(--muted); font-size: 14px; margin-top: 6px; }

.faq h2 { font-size: 17px; margin-top: 28px; }
.info { border-collapse: collapse; width: 100%; }
.info th, .info td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
.info th { width: 10em; color: var(--muted); font-weight: 600; }
ol, ul { padding-left: 1.4em; }

footer.site { border-top: 1px solid var(--line); padding-top: 20px; padding-bottom: 40px; color: var(--muted); font-size: 14px; }
footer.site nav { display: flex; flex-wrap: wrap; gap: 4px 16px; }
footer.site p { margin: 8px 0 0; }