/* ChatBrief の紹介・マニュアル（ログイン不要の文書のページ）。アプリと同じ色・書体（Brief シリーズ）。
   外の部品・フォントは読み込まない。色の帯（左の線）は使わない（ワークスペースのルール）。 */
:root {
  --bg: #f5f8fc; --card: #fff; --ink: #1e293b; --ink-soft: #334155; --muted: #64748b; --line: #e2e8f0; --line-soft: #eef2f7;
  --blue: #1565ff; --blue-deep: #0d47c9; --blue-tint: #eaf2ff; --violet: #6e56cf; --violet-tint: #f5f3ff; --teal: #0e7490; --teal-tint: #ecfeff;
  --red: #d92d20; --amber: #93370d; --green: #067647; --shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 6px 20px rgba(13, 71, 201, .06); --radius: 14px;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: "BIZ UDPGothic", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", Meiryo, system-ui, sans-serif; line-height: 1.8; word-break: auto-phrase; overflow-wrap: anywhere; -webkit-text-size-adjust: 100%; }
a { color: var(--blue-deep); }
img { max-width: 100%; height: auto; }

.top { position: sticky; top: 0; z-index: 10; background: rgba(255, 255, 255, .92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.top-in { max-width: 1080px; margin: 0 auto; display: flex; align-items: center; gap: 16px; padding: 10px 20px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand img { height: 22px; width: auto; }
.brand .sep { width: 1px; height: 18px; background: var(--line); }
.brand .name { font-weight: 800; }
.brand .name em { font-style: normal; color: var(--blue); }
.top nav { margin-left: auto; display: flex; gap: 6px; align-items: center; }
.top nav a { text-decoration: none; color: var(--ink-soft); font-weight: 700; font-size: .9rem; padding: 8px 12px; border-radius: 8px; }
.top nav a:hover { background: var(--line-soft); }
.top nav a.btn-login { background: var(--blue); color: #fff; }
.top nav a.btn-login:hover { background: var(--blue-deep); }

main { max-width: 1080px; margin: 0 auto; padding: 0 20px 56px; }
.hero { display: grid; grid-template-columns: 1.1fr .9fr; gap: 32px; align-items: center; padding: 48px 0 36px; }
.hero h1 { font-size: 2.1rem; line-height: 1.45; margin: 0 0 14px; letter-spacing: .01em; }
.hero h1 em { font-style: normal; color: var(--blue); }
.hero p.lead { font-size: 1.05rem; color: var(--ink-soft); margin: 0 0 22px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; font-weight: 700; border-radius: 10px; padding: 12px 20px; }
.btn.main { background: var(--blue); color: #fff; }
.btn.main:hover { background: var(--blue-deep); }
.btn.ghost { background: #fff; color: var(--blue-deep); border: 1px solid rgba(21, 101, 255, .3); }
.hero-pic { background: var(--card); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); padding: 18px; }

section.block { margin: 40px 0; }
section.block > h2 { font-size: 1.45rem; margin: 0 0 6px; }
section.block > p.sub { color: var(--muted); margin: 0 0 18px; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px 18px 16px; }
.card h3 { margin: 10px 0 4px; font-size: 1.02rem; }
.card p { margin: 0; color: var(--ink-soft); font-size: .92rem; }
.ico { width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center; background: var(--blue-tint); color: var(--blue); }
.ico.violet { background: var(--violet-tint); color: var(--violet); }
.ico.teal { background: var(--teal-tint); color: var(--teal); }
.figure { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; overflow-x: auto; }
.figure svg { display: block; min-width: 720px; width: 100%; height: auto; }

.price { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.price .big { font-size: 2rem; font-weight: 800; color: var(--blue-deep); }
.price ul, .card ul { margin: 8px 0 0; padding-left: 1.2em; color: var(--ink-soft); font-size: .92rem; }
.note { background: var(--blue-tint); color: var(--blue-deep); border-radius: 12px; padding: 12px 16px; font-size: .9rem; }
.warn { background: #fff7e6; color: #7a3e00; border: 1px solid #f3dca6; border-radius: 12px; padding: 12px 16px; font-size: .9rem; }
.confirm { background: #fde2df; color: #912018; font-weight: 700; border-radius: 6px; padding: 0 6px; font-size: .85em; }

.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.steps > li { counter-increment: s; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px 14px 60px; position: relative; box-shadow: var(--shadow); }
.steps > li::before { content: counter(s); position: absolute; left: 16px; top: 14px; width: 30px; height: 30px; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 800; display: grid; place-items: center; }
.steps h3 { margin: 0 0 4px; font-size: 1rem; }
.steps p { margin: 0; color: var(--ink-soft); font-size: .92rem; }

details.faq { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; margin-bottom: 10px; }
details.faq summary { font-weight: 700; cursor: pointer; }
details.faq p { margin: 8px 0 0; color: var(--ink-soft); font-size: .92rem; }

/* マニュアル */
.doc { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 28px; padding-top: 28px; }
.toc { position: sticky; top: 72px; align-self: start; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; font-size: .9rem; }
.toc strong { display: block; margin-bottom: 6px; }
.toc ol { margin: 0; padding-left: 1.3em; }
.toc a { text-decoration: none; color: var(--ink-soft); }
.toc a:hover { color: var(--blue-deep); }
.doc article h1 { font-size: 1.7rem; margin: 0 0 6px; }
.doc article h2 { font-size: 1.25rem; margin: 34px 0 8px; padding-top: 8px; scroll-margin-top: 72px; }
.doc article h3 { font-size: 1.02rem; margin: 18px 0 6px; }
.doc article p, .doc article li { color: var(--ink-soft); }
.doc article table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; font-size: .92rem; }
.doc article th, .doc article td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
.doc article th { background: #f8fafc; color: var(--muted); font-size: .82rem; }
.chip { display: inline-block; font-size: .78rem; font-weight: 700; border-radius: 6px; padding: 1px 8px; background: var(--line-soft); color: var(--ink-soft); }
.chip.hi { background: var(--red); color: #fff; } .chip.mid { background: #fac515; color: #4e1d09; } .chip.lo { background: var(--green); color: #fff; } .chip.ai { background: var(--violet-tint); color: var(--violet); }

/* 写真と画面の撮影（2026-10-11 岩城さん「人の目に触れるところは写真や画像を」） */
.photo { display: block; width: 100%; aspect-ratio: 3 / 2; object-fit: cover; border-radius: 18px; box-shadow: var(--shadow); background: var(--blue-tint); }
.shot { background: #fff; border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 10px 30px rgba(13, 71, 201, .10); overflow: hidden; }
.shot::before { content: ""; display: block; height: 26px; background: #f1f5f9 radial-gradient(circle at 16px 13px, #f87171 4px, transparent 5px), radial-gradient(circle at 32px 13px, #fbbf24 4px, transparent 5px), radial-gradient(circle at 48px 13px, #34d399 4px, transparent 5px); border-bottom: 1px solid var(--line); }
.shot img { display: block; width: 100%; height: auto; }
.shot.phone { max-width: 260px; border-radius: 26px; border: 8px solid #1e293b; margin: 0 auto; }
.shot.phone::before { display: none; }
.caption { color: var(--muted); font-size: .85rem; text-align: center; margin: 8px 0 0; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: center; margin: 34px 0; }
.row.flip > :first-child { order: 2; }
.row h3 { font-size: 1.3rem; margin: 8px 0 8px; }
.row p { color: var(--ink-soft); margin: 0 0 8px; }
.pains { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.pains li { display: flex; gap: 14px; align-items: center; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; box-shadow: var(--shadow); font-weight: 700; }
.pains .ico { flex: none; background: #fde2df; color: var(--red); }
.screens { display: grid; grid-template-columns: 1fr 260px; gap: 28px; align-items: start; }
.doc article .shot { margin: 12px 0 6px; }

footer { border-top: 1px solid var(--line); color: var(--muted); font-size: .82rem; text-align: center; padding: 22px 16px 30px; }
footer a { color: var(--muted); }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 28px; }
  .hero h1 { font-size: 1.6rem; }
  .grid { grid-template-columns: 1fr; }
  .price { grid-template-columns: 1fr; }
  .doc { grid-template-columns: 1fr; }
  .toc { position: static; }
  .top nav a:not(.btn-login) { display: none; }
  .row, .screens { grid-template-columns: 1fr; gap: 18px; }
  .row.flip > :first-child { order: 0; }
}