/* 蔵帳のサイト。色はアイコンの瑠璃と朱。フォントは端末のものだけ（外部から読み込まない） */
:root {
  --ruri: #1F468F; --ruri-2: #3A72C8; --shu: #D7402B;
  --bg: #F6F3EC; --bg-2: #EFEAE0; --card: #FFFFFF; --text: #1B1D22; --sub: #5E6470; --line: rgba(27,29,34,.08);
  --link: #2C5FB0; --shadow: 0 10px 30px rgba(20,30,60,.10);
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0F1116; --bg-2: #151923; --card: #1A1E27; --text: #EEF0F4; --sub: #A3A9B5; --line: rgba(255,255,255,.08); --link: #8DB3F0; --shadow: 0 10px 30px rgba(0,0,0,.35); }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text); line-height: 1.85; letter-spacing: .02em;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

/* 見出しの帯 */
.topbar { position: sticky; top: 0; z-index: 10; backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px);
  background: color-mix(in srgb, var(--bg) 82%, transparent); border-bottom: 1px solid var(--line); }
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; letter-spacing: .12em; }
.brand img { width: 30px; height: 30px; border-radius: 7px; }
.brand:hover { text-decoration: none; }
.topbar nav { display: flex; gap: 22px; font-size: .92rem; }
.topbar nav a { color: var(--sub); }
.topbar nav a[aria-current] { color: var(--text); font-weight: 600; }

/* 最初の画面 */
.hero { padding: 72px 0 40px; overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; align-items: center; }
.eyebrow { display: inline-block; font-size: .8rem; color: var(--shu); font-weight: 700; letter-spacing: .18em; margin-bottom: 14px; }
.hero h1 { font-size: clamp(2.2rem, 4.4vw, 3.3rem); line-height: 1.3; margin: 0 0 18px; letter-spacing: .04em; }
.hero h1 .accent { color: var(--ruri-2); }
.lead { font-size: 1.08rem; color: var(--sub); margin: 0 0 28px; max-width: 30em; }
.badges { display: flex; flex-wrap: wrap; gap: 10px; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: 999px; background: var(--card); border: 1px solid var(--line); font-size: .86rem; color: var(--sub); }
.chip svg { width: 16px; height: 16px; color: var(--ruri-2); }

.phones { position: relative; height: 520px; }
.phone { position: absolute; width: 230px; border-radius: 38px; padding: 9px; background: #0c0d10; box-shadow: var(--shadow), 0 0 0 1px rgba(255,255,255,.06) inset; }
.phone img { display: block; width: 100%; border-radius: 30px; }
.phone.p1 { left: 50%; top: 0; transform: translateX(-50%); z-index: 3; }
.phone.p2 { left: 4%; top: 60px; transform: rotate(-7deg); z-index: 2; opacity: .96; }
.phone.p3 { right: 4%; top: 60px; transform: rotate(7deg); z-index: 1; opacity: .96; }

/* できること */
.section { padding: 56px 0; }
.section.alt { background: var(--bg-2); }
.section h2 { font-size: 1.6rem; margin: 0 0 8px; letter-spacing: .06em; }
.section .sub { color: var(--sub); margin: 0 0 30px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 22px 22px 20px; }
.feature .icon { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: color-mix(in srgb, var(--ruri-2) 14%, transparent); color: var(--ruri-2); margin-bottom: 12px; }
.feature .icon svg { width: 22px; height: 22px; }
.feature h3 { font-size: 1.02rem; margin: 0 0 6px; }
.feature p { margin: 0; color: var(--sub); font-size: .93rem; line-height: 1.75; }

/* プライバシーの帯 */
.privacy-card { display: grid; grid-template-columns: auto 1fr; gap: 24px; align-items: center; background: linear-gradient(135deg, var(--ruri-2), var(--ruri)); color: #fff;
  border-radius: 24px; padding: 34px 36px; box-shadow: var(--shadow); }
.privacy-card .lock { width: 64px; height: 64px; border-radius: 18px; background: rgba(255,255,255,.16); display: grid; place-items: center; }
.privacy-card .lock svg { width: 32px; height: 32px; }
.privacy-card h2 { margin: 0 0 6px; font-size: 1.4rem; }
.privacy-card p { margin: 0; opacity: .92; }
.privacy-card a { color: #fff; text-decoration: underline; }

/* 文章のページ */
.page { padding: 48px 0 72px; }
.page .wrap { max-width: 760px; }
.page h1 { font-size: 1.9rem; line-height: 1.4; margin: 0 0 6px; letter-spacing: .05em; }
.page .updated { color: var(--sub); font-size: .88rem; margin-bottom: 24px; }
.page h2 { font-size: 1.15rem; margin: 34px 0 10px; padding-left: 12px; border-left: 4px solid var(--shu); line-height: 1.5; }
.page section, .page .card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px 22px; margin: 12px 0; }
.page ul { padding-left: 1.2em; margin: .4em 0; }
.page hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 20px; margin: 10px 0; }
.faq summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "＋"; color: var(--sub); }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: 10px 0 2px; color: var(--sub); }
.muted { color: var(--sub); font-size: .9rem; }

footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--sub); font-size: .86rem; }
footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
footer nav { display: flex; gap: 18px; }
footer a { color: var(--sub); }

@media (max-width: 820px) {
  .hero { padding: 40px 0 20px; }
  .hero .wrap { grid-template-columns: 1fr; text-align: left; }
  .phones { height: 430px; margin-top: 8px; }
  .phone { width: 190px; border-radius: 32px; padding: 7px; }
  .phone img { border-radius: 26px; }
  .phone.p2 { left: -2%; } .phone.p3 { right: -2%; }
  .grid { grid-template-columns: 1fr; }
  .privacy-card { grid-template-columns: 1fr; padding: 28px 24px; }
  .topbar nav { gap: 14px; font-size: .85rem; }
}