/* デザインの決めは Addness「6 見本からデザインの決めを書き出し…」の本文の表にある */
:root {
  --bg: #F5F1EA;
  --surface: #FFFFFF;
  --surface-soft: #EDE6DA;
  --ink: #1F2A33;
  --ink-sub: #555E66;
  --line: #D8D0C3;
  --light: #8A4F1D;
  --light-hover: #74411A;
  --serif: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --section: 128px;
  --gutter: 40px;
}

* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 400;
  font-size: 16px;
  line-height: 2;
  letter-spacing: 0.08em;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
p { margin: 0 0 1.4em; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 var(--gutter); }
.narrow { max-width: 720px; margin: 0 auto; padding: 0 var(--gutter); }

/* ヘッダー */
.header { border-bottom: 1px solid var(--line); }
.header .wrap { display: flex; align-items: center; justify-content: space-between; height: 80px; gap: 24px; }
.logo { text-decoration: none; font-size: 22px; font-weight: 500; letter-spacing: 0.2em; white-space: nowrap; }
.nav { display: flex; gap: 32px; }
.nav a { text-decoration: none; font-size: 15px; letter-spacing: 0.12em; padding: 6px 0; border-bottom: 1px solid transparent; }
.nav a:hover, .nav a[aria-current="page"] { border-bottom-color: var(--ink); }

/* 冒頭 */
.hero { padding: 112px 0 var(--section); }
.hero .wrap { display: grid; grid-template-columns: 1fr 1.05fr; gap: 72px; align-items: center; }
.hero h1 { margin: 0 0 40px; font-size: 34px; font-weight: 500; line-height: 1.9; letter-spacing: 0.15em; white-space: pre-line; }
.hero p { color: var(--ink-sub); max-width: 26em; margin: 0; }
.hero figure { margin: 0; }
.hero img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 2px; }
.fade { animation: fade 0.9s ease-out both; }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .fade { animation: none; } }

/* 段 */
.section { padding: var(--section) 0; border-top: 1px solid var(--line); }
.section.soft { background: var(--surface-soft); border-top: 0; }
.section h2 { margin: 0 0 48px; font-size: 26px; font-weight: 500; line-height: 1.7; letter-spacing: 0.15em; }
.lead { color: var(--ink-sub); margin-bottom: 56px; }

.intro { display: grid; grid-template-columns: 220px 1fr; gap: 56px; }
.intro h2 { margin: 0; }

/* できること */
.menu { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.menu a { display: flex; flex-direction: column; height: 100%; text-decoration: none; background: var(--surface); border: 1px solid var(--line); border-radius: 2px; padding: 40px 32px 32px; transition: border-color 0.2s; }
.menu a:hover { border-color: var(--ink); }
.menu .num { font-size: 15px; color: var(--light); letter-spacing: 0.2em; margin-bottom: 16px; }
.menu h3 { margin: 0 0 20px; font-size: 20px; font-weight: 500; line-height: 1.7; letter-spacing: 0.1em; }
.menu p { color: var(--ink-sub); font-size: 15px; margin-bottom: 28px; }
.menu .meta { margin-top: auto; padding-top: 20px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 12px; font-size: 15px; }
.menu .where { color: var(--ink-sub); }

/* ボタン：灯の色はボタンにしか使わない */
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 36px; background: var(--light); color: #FFFFFF; text-decoration: none; border-radius: 2px; font-size: 15px; letter-spacing: 0.15em; transition: background 0.2s; }
.button:hover { background: var(--light-hover); }
.button-note { display: block; margin-top: 16px; font-size: 14px; color: var(--ink-sub); }

/* 下層ページの見出し */
.page-head { padding: 112px 0 80px; }
.page-head h1 { margin: 0; font-size: 32px; font-weight: 500; line-height: 1.8; letter-spacing: 0.15em; }
.page-head .sub { display: block; font-size: 16px; color: var(--ink-sub); letter-spacing: 0.12em; margin-bottom: 12px; }

/* わたしについて */
.about { display: grid; grid-template-columns: auto 1fr; gap: 80px; align-items: start; }
.vertical { writing-mode: vertical-rl; font-size: 22px; font-weight: 500; letter-spacing: 0.3em; line-height: 1; margin: 0; padding-top: 4px; }
.about figure { margin: 0 0 56px; }
.about img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 2px; }
.numbers { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.numbers li { border-top: 1px solid var(--ink); padding-top: 24px; }
.numbers .value { display: block; font-size: 30px; font-weight: 500; letter-spacing: 0.08em; line-height: 1.5; margin-bottom: 8px; }
.numbers .label { font-size: 15px; color: var(--ink-sub); }
.small { font-size: 14px; color: var(--ink-sub); margin-top: 32px; }

/* 手紙と言葉 */
.feature { background: var(--surface); border: 1px solid var(--line); border-radius: 2px; padding: 56px; display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: end; }
.feature h3, .tool h3 { margin: 0 0 20px; font-size: 22px; font-weight: 500; line-height: 1.7; letter-spacing: 0.1em; }
.feature p { color: var(--ink-sub); margin: 0; }
.tag { display: block; font-size: 15px; color: var(--ink-sub); letter-spacing: 0.12em; margin-bottom: 12px; }
.price { display: block; font-size: 22px; letter-spacing: 0.08em; margin-bottom: 20px; text-align: right; }
.tools { list-style: none; margin: 0; padding: 0; }
.tool { display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: center; padding: 36px 0; border-top: 1px solid var(--line); }
.tool:last-child { border-bottom: 1px solid var(--line); }
.tool h3 { font-size: 19px; margin-bottom: 8px; }
.tool p { color: var(--ink-sub); font-size: 15px; margin: 0; }
.tool .side { text-align: right; }
.tool .price { font-size: 18px; margin-bottom: 12px; }
.text-link { font-size: 15px; letter-spacing: 0.12em; text-decoration: none; border-bottom: 1px solid var(--ink); padding-bottom: 2px; }

.letters-top { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; margin-bottom: 72px; }
.letters-top .lead { margin: 0; }
.letters-top figure { margin: 0; }
.letters-top img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 2px; }

/* 講座 */
.lesson-top { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.lesson-top img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 2px; }
.lesson-top .lead-big { font-size: 22px; font-weight: 500; line-height: 2; letter-spacing: 0.12em; margin: 0; }
.list { list-style: none; margin: 0; padding: 0; }
.list li { padding: 18px 0 18px 28px; border-bottom: 1px solid var(--line); position: relative; }
.list li::before { content: ""; position: absolute; left: 4px; top: 34px; width: 8px; height: 1px; background: var(--ink); }
.details { margin: 0; }
.details div { display: grid; grid-template-columns: 160px 1fr; gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.details dt { color: var(--ink-sub); }
.details dd { margin: 0; }
.notice { margin-top: 40px; padding: 28px 32px; background: var(--surface); border: 1px solid var(--line); font-size: 15px; color: var(--ink-sub); }
.cta { text-align: center; padding-top: 72px; }

/* フッター */
.footer { border-top: 1px solid var(--line); padding: 72px 0 56px; }
.footer .wrap { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.footer .logo { font-size: 18px; }
.footer p { font-size: 14px; color: var(--ink-sub); margin: 16px 0 0; max-width: 34em; }
.footer nav { display: flex; flex-direction: column; gap: 8px; font-size: 15px; }
.footer nav a { text-decoration: none; }
.footer nav a:hover { text-decoration: underline; }
.copy { font-size: 14px; color: var(--ink-sub); margin-top: 48px; }

/* スマホ */
@media (max-width: 760px) {
  :root { --section: 80px; --gutter: 20px; }
  body { font-size: 15px; }
  .header .wrap { height: auto; padding-top: 18px; padding-bottom: 14px; flex-direction: column; align-items: flex-start; gap: 10px; }
  .logo { font-size: 20px; }
  .nav { gap: 20px; flex-wrap: wrap; }
  .nav a { font-size: 14px; }
  .hero { padding: 48px 0 var(--section); }
  .hero .wrap { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 24px; margin-bottom: 24px; }
  .section h2 { font-size: 21px; margin-bottom: 32px; }
  .intro { grid-template-columns: 1fr; gap: 24px; }
  .menu { grid-template-columns: 1fr; }
  .menu a { padding: 32px 24px 24px; }
  .page-head { padding: 64px 0 48px; }
  .page-head h1 { font-size: 24px; }
  .about { grid-template-columns: 1fr; gap: 40px; }
  .vertical { writing-mode: horizontal-tb; font-size: 20px; letter-spacing: 0.2em; line-height: 1.6; }
  .numbers { grid-template-columns: 1fr; gap: 0; }
  .numbers li { padding: 20px 0; }
  .numbers .value { font-size: 26px; }
  .feature { padding: 32px 24px; grid-template-columns: 1fr; gap: 24px; }
  .price { text-align: left; }
  .tool { grid-template-columns: 1fr; gap: 16px; }
  .tool .side { text-align: left; display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
  .tool .price { margin: 0; }
  .lesson-top, .letters-top { grid-template-columns: 1fr; gap: 40px; }
  .letters-top { margin-bottom: 48px; }
  .lesson-top .lead-big { font-size: 19px; }
  .details div { grid-template-columns: 1fr; gap: 4px; }
  .button { width: 100%; }
}