/*
 * 紹介ページ(編集デザイン版)。
 * 温かみのある生成り色の地に、細く大きな小文字の見出し、ひとつだけの朱色、手描きの線画、
 * 見出しの中に差し込む小さな写真、点滅するカーソル。余白を大きく取り、静かに読ませる。
 */
:root {
  --bg: #f3f1ec;
  --ink: #1b1b1a;
  --muted: #6d6b66;
  --line: #d8d4cb;
  --accent: #ff5a1f;
  --accent-ink: #ffffff;
  --note: #ffd54a;
  --surface: #faf9f6;
  --display: "Inter Tight", "Noto Sans JP", system-ui, sans-serif;
  --text: "Inter Tight", "Noto Sans JP", system-ui, sans-serif;
  color-scheme: light;
}
/* 日本語のページ:見出しはしっぽり明朝、本文は Zen角ゴシック New(どちらもサイト内のフォント) */
html[lang="ja"] {
  --display: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", YuMincho, serif;
  --text: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", YuGothic, sans-serif;
}
html[lang="ja"] body { font-weight: 400; letter-spacing: 0.02em; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #161514; --ink: #f1efe9; --muted: #a39f97; --line: #34322e; --surface: #1d1c1a; color-scheme: dark; }
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 300 16px/1.75 var(--text); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
img { display: block; max-width: 100%; height: auto; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.wrap { width: min(1180px, 100% - 48px); margin: 0 auto; }

/* ---------- 小さな部品 ---------- */
.micro { font: 500 0.68rem/1.4 var(--text); letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink); }
.micro--muted { color: var(--muted); }
.pill {
  display: inline-flex; align-items: center; gap: 8px; padding: 9px 18px; border-radius: 999px;
  background: var(--accent); color: var(--accent-ink); border: 0;
  font: 600 0.72rem/1 var(--text); letter-spacing: 0.12em; text-transform: uppercase; text-decoration: none; cursor: pointer;
}
.pill:hover { filter: brightness(1.08); }
.pill--ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); }
.cursor::after { content: ""; display: inline-block; width: 2px; height: 0.82em; margin-left: 0.08em; background: var(--ink); vertical-align: -0.04em; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.mark { background: var(--ink); color: var(--bg); padding: 0 0.15em; }
.doodle { color: var(--ink); }
.doodle .hot { color: var(--accent); }
@media (prefers-reduced-motion: reduce) { .cursor::after { animation: none; } html { scroll-behavior: auto; } }

/* ---------- ヘッダー ---------- */
.site-header { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 20px 0; }
.wordmark { font: 400 1.05rem/1 var(--display); letter-spacing: -0.02em; text-decoration: none; text-transform: lowercase; }
.site-header nav { display: flex; gap: 28px; }
.site-header nav a { text-decoration: none; }
.header-right { display: flex; justify-content: flex-end; align-items: center; gap: 14px; }
.lang a { text-decoration: none; color: var(--muted); }
.lang a[aria-current="true"] { color: var(--ink); }
.dot { width: 26px; height: 26px; border-radius: 50%; background: var(--accent); display: inline-block; }

/* ---------- 大きな見出し ---------- */
.display { font: 200 clamp(3.2rem, 9.2vw, 7.8rem)/0.92 var(--display); letter-spacing: -0.045em; margin: 0; }
.display--ja { font-weight: 400; letter-spacing: 0.02em; line-height: 1.18; font-size: clamp(2.3rem, min(6vw, 10.5vh), 5.4rem); }
.display .line { display: block; white-space: nowrap; }
.display .seg { display: inline-block; }
.display .indent-1 { padding-left: min(8vw, 110px); }
.display .indent-2 { padding-left: min(18vw, 230px); }
.chip { object-position: center; display: inline-block; height: 0.62em; width: 1.1em; border-radius: 0.08em; object-fit: cover; vertical-align: 0.02em; margin: 0 0.06em; }
/* 最初の画面のイラストは大きく(見出しの文字の約2.5倍の高さ)。1行目に単独で置き、文字の中央にそろえる */
.chip--hero { height: 2.48em; width: auto; aspect-ratio: 1376 / 768; border-radius: 0.1em; vertical-align: middle; margin: 0.12em 0 0.12em 0.18em; }
.chip--round { width: 0.62em; border-radius: 50%; }
.chip--icon { width: 0.62em; border-radius: 0.12em; background: var(--surface); }
.heading { font: 200 clamp(2.4rem, 6vw, 5.2rem)/1 var(--display); letter-spacing: -0.04em; margin: 10px 0 0; }
.heading--ja { font-weight: 400; letter-spacing: 0.03em; line-height: 1.4; font-size: clamp(1.8rem, 4vw, 3.2rem); }
.heading .line { display: block; }
.heading .indent-1 { padding-left: 6vw; }

/* ---------- ヒーロー ---------- */
.hero { position: relative; padding: 48px 0 40px; }
.hero__title { position: relative; --ds: clamp(3.2rem, 9.2vw, 7.8rem); --lh: 0.92; }
.hero__title--ja { --ds: clamp(2.3rem, min(6vw, 10.5vh), 5.4rem); --lh: 1.18; }
/* 説明文は、最後の行の右側の余白に置く(最後の行の高さだけ上に詰める) */
.hero__side { position: relative; margin: calc(-1 * var(--ds) * var(--lh) + 0.3rem) 0 0 auto; width: min(320px, 30%); font-size: 0.82rem; line-height: 1.65; color: var(--muted); border-left: 1px solid var(--ink); padding-left: 14px; }
.hero__side p { margin: 0; }
.hero__side .pill { margin-top: 14px; }
.hero__ctas { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 48px; justify-content: center; }
.hero__note { text-align: center; color: var(--muted); font-size: 0.82rem; margin-top: 14px; }
.hero__doodle { position: absolute; left: 1%; top: 54%; width: 120px; }
.hero__title--ja .hero__doodle { left: auto; right: 8%; top: 12%; }

/* 過去の今日のカード(このページの主役のひとつ) */
.memories { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--ink); margin-top: 72px; }
.memory { padding: 22px 22px 26px 0; border-right: 1px solid var(--line); }
.memory + .memory { padding-left: 22px; }
.memory:last-child { border-right: 0; }
.memory__ago { color: var(--accent); }
.memory__day { font: 200 4.4rem/1 var(--display); letter-spacing: -0.05em; margin: 10px 0 2px; }
.memory__year { color: var(--muted); font-size: 0.8rem; }
.memory p { margin: 14px 0 0; font-size: 0.98rem; }

/* ---------- セクション ---------- */
.section { padding: 120px 0; }
.section--tight { padding: 80px 0; }
.section-head { display: grid; grid-template-columns: minmax(0, 1fr); justify-items: center; text-align: center; margin-bottom: 64px; }
.section-head .heading { text-align: left; }
.lead { font: 300 clamp(1.15rem, 2.1vw, 1.6rem)/1.5 var(--text); letter-spacing: -0.01em; max-width: 30em; }
.lead--center { margin: 26px auto 0; text-align: center; }
.rule { border: 0; border-top: 1px solid var(--line); margin: 0; }

.problems { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
.problem { border-top: 1px solid var(--ink); padding-top: 16px; }
.problem .num { font: 200 2.6rem/1 var(--display); color: var(--accent); letter-spacing: -0.04em; }
.problem h3 { font: 400 1.15rem/1.4 var(--text); margin: 14px 0 8px; }
.problem p { margin: 0; color: var(--muted); font-size: 0.94rem; }

.feature { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 64px; align-items: center; padding: 56px 0; border-top: 1px solid var(--line); }
.feature--flip { grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr); }
.feature--flip .feature__text { order: 2; }
.feature__text .num { color: var(--accent); }
.feature__text h3 { font: 200 clamp(2rem, 3.6vw, 3rem)/1.05 var(--display); letter-spacing: -0.035em; margin: 12px 0 16px; }
.feature__text p { color: var(--muted); margin: 0; max-width: 26em; }
.shot { border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: var(--surface); }

/* 円が重なる行(機能の名前) */
.rings { display: flex; justify-content: center; flex-wrap: wrap; margin: 72px 0 16px; }
.ring { width: 150px; height: 150px; border-radius: 50%; border: 1px solid var(--accent); margin-left: -22px; display: grid; place-items: center; text-align: center; font: 400 0.9rem/1.3 var(--text); padding: 18px; background: color-mix(in srgb, var(--bg) 80%, transparent); }
.ring:first-child { margin-left: 0; }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; margin-top: 48px; }
.card { border-top: 1px solid var(--ink); padding-top: 16px; }
.card h3 { font: 400 1.1rem/1.4 var(--text); margin: 0 0 8px; }
.card p { margin: 0; color: var(--muted); font-size: 0.94rem; }

.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
.steps li { counter-increment: s; border-top: 1px solid var(--ink); padding-top: 16px; }
.steps li::before { content: "0" counter(s); display: block; font: 200 4rem/1 var(--display); letter-spacing: -0.05em; color: var(--accent); margin-bottom: 18px; }
.steps h3 { font: 400 1.1rem/1.4 var(--text); margin: 0 0 8px; }
.steps p { margin: 0; color: var(--muted); font-size: 0.94rem; }

.privacy { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 64px; align-items: start; }
.privacy__doodle { width: 200px; margin-top: 28px; }
.privacy ul { list-style: none; margin: 0; padding: 0; }
.privacy li { padding: 18px 0 18px 36px; border-top: 1px solid var(--line); position: relative; }
.privacy li::before { content: ""; position: absolute; left: 0; top: 30px; width: 18px; height: 1px; background: var(--accent); }

.plans { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--ink); }
.plan { padding: 28px 32px 32px 0; }
.plan + .plan { padding-left: 32px; border-left: 1px solid var(--line); }
.plan h3 { margin: 10px 0 0; font: 400 1.1rem var(--text); }
.plan .price { font: 200 clamp(3rem, 6vw, 5rem)/1 var(--display); letter-spacing: -0.05em; margin: 18px 0 10px; }
.plan .price small { font: 500 0.7rem var(--text); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin-left: 8px; }
.plan ul { padding-left: 1.1em; color: var(--muted); margin: 0; }
.plan--pro .micro { color: var(--accent); }

.faq { max-width: 820px; margin: 0 auto; }
.faq details { border-top: 1px solid var(--line); padding: 22px 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 16px; font: 300 1.2rem/1.4 var(--text); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-weight: 300; font-size: 1.4rem; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { color: var(--muted); margin: 14px 0 0; max-width: 40em; }

/* ---------- 事前登録 ---------- */
.signup { position: relative; text-align: center; }
.signup form { display: grid; gap: 14px; width: min(460px, 100%); margin: 40px auto 0; text-align: left; }
.signup label { display: grid; gap: 6px; }
.signup input { font: 300 1.05rem var(--text); padding: 12px 0; border: 0; border-bottom: 1px solid var(--ink); background: transparent; color: var(--ink); }
.signup input:focus { outline: none; border-bottom-color: var(--accent); }
.signup .pill { justify-self: start; margin-top: 10px; }
.signup .status { min-height: 1.6em; }
.signup .status--ok { color: var(--accent); }
.signup .status--error { color: #c0392b; }
.signup small { color: var(--muted); font-size: 0.8rem; }
.sticky {
  position: absolute; right: 8%; top: 40px; width: 150px; padding: 14px 14px 18px; background: var(--note); color: #1b1b1a;
  transform: rotate(4deg); box-shadow: 0 10px 18px -12px rgb(0 0 0 / 0.5); font-size: 0.82rem; line-height: 1.5; text-align: left;
}
.sticky .micro { color: #1b1b1a; display: block; margin-bottom: 6px; }

/* ---------- フッター ---------- */
.site-footer { background: #1b1b1a; color: #f1efe9; padding: 72px 0 28px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 40px; align-items: end; }
.footer-word { font: 200 clamp(3.6rem, 11vw, 9.5rem)/0.9 var(--display); letter-spacing: -0.055em; text-transform: lowercase; margin: 0; }
.footer-doodle { width: 110px; margin-top: 24px; }
.footer-doodle .doodle { color: #f1efe9; }
.footer-nav { list-style: none; padding: 0; margin: 0; min-width: 300px; }
.footer-nav li { display: flex; justify-content: space-between; gap: 40px; padding: 7px 0; border-top: 1px solid #34322e; }
.footer-nav a { color: #f1efe9; text-decoration: none; text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.82rem; }
.footer-nav .n { color: #8c8880; font-size: 0.75rem; }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 48px; color: #8c8880; font-size: 0.72rem; letter-spacing: 0.06em; }

/* ---------- 文書ページ ---------- */
.doc { width: min(760px, 100% - 48px); margin: 0 auto; padding: 40px 0 80px; }
.doc h1 { font: 200 clamp(2.6rem, 6vw, 4.4rem)/1 var(--display); letter-spacing: -0.04em; }
.doc h2 { font: 400 1.15rem var(--text); margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--line); }
.doc li, .doc p { font-size: 0.98rem; }

@media (max-width: 860px) {
  .site-header { grid-template-columns: 1fr auto; }
  .site-header nav { display: none; }
  .hero__side, .hero__doodle { position: static; width: auto; margin-top: 28px; }
  .hero__side { border-left: 0; padding-left: 0; margin: 28px 0 0; width: auto; }
  .hero__doodle { width: 90px; }
  .display .line { white-space: normal; }
  .display .indent-1, .display .indent-2, .heading .indent-1 { padding-left: 0; }
  .memories, .problems, .cards, .steps, .plans, .privacy, .feature, .footer-grid { grid-template-columns: 1fr; }
  .memory, .memory + .memory { padding: 20px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .plan + .plan { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .feature--flip { grid-template-columns: 1fr; }
  .feature--flip .feature__text { order: 0; }
  .feature { gap: 28px; }
  .ring { width: 116px; height: 116px; font-size: 0.78rem; margin-left: -14px; }
  .sticky { position: static; transform: rotate(2deg); margin: 24px auto 0; }
  .section { padding: 80px 0; }
}

/* 日本語の小見出しは、読点の位置で改行する(単語の途中で折り返さない) */
html[lang="ja"] .feature__text h3, html[lang="ja"] .problem h3, html[lang="ja"] .card h3, html[lang="ja"] .steps h3 { word-break: keep-all; overflow-wrap: anywhere; }

/* 英語版は見出しが5行になるので、イラストを少し小さくし、文字の大きさを画面の高さにも合わせて、最初の画面に収める */
.hero__title--en { --ds: clamp(2.8rem, min(9.2vw, 11.2vh), 7.8rem); }
.hero__title--en .display { font-size: var(--ds); }
.hero__title--en .chip--hero { height: 2em; }
.hero__title--en .hero__doodle { left: auto; right: 8%; top: 32%; }
@media (max-width: 860px) { .hero__title--en .hero__doodle, .hero__title--ja .hero__doodle { right: auto; } }

/* ロボット対策の見えない欄 */
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }