@charset "UTF-8";

:root {
  color-scheme: light;
  --paper: #f7f6f1;
  --paper-deep: #eeece4;
  --ink: #222821;
  --muted: #697069;
  --line: #d9d8cf;
  --green: #456a4d;
  --green-deep: #2d4933;
  --green-pale: #e5eadd;
  --white: #fffefa;
  --serif: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", "MS PMincho", Georgia, serif;
  --sans: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", "Meiryo", sans-serif;
  font-family: var(--sans);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: var(--paper); font-size: 15px; line-height: 1.9; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .24em; }
a:hover { color: var(--green); }
a:focus-visible { outline: 3px solid #9aa991; outline-offset: 4px; border-radius: 2px; }
.wrap { width: min(1100px, calc(100% - 64px)); margin-inline: auto; }
.skip-link { position: absolute; top: -100px; left: 1rem; z-index: 20; padding: .7rem 1rem; color: #fff; background: var(--green-deep); }
.skip-link:focus { top: 1rem; }

.site-header { min-height: 82px; padding: 0 5.2%; display: flex; align-items: center; justify-content: space-between; gap: 28px; border-bottom: 1px solid var(--line); }
.wordmark { display: inline-flex; flex: 0 0 auto; gap: 10px; align-items: center; font-size: 15px; font-weight: 700; letter-spacing: .035em; text-decoration: none; }
.wordmark:hover { color: var(--ink); }
.wordmark-mark { display: grid; width: 30px; height: 30px; place-items: center; border-radius: 50% 50% 45% 45%; color: var(--white); background: var(--green); font-family: var(--serif); font-size: 16px; font-weight: 500; }
.main-nav { display: flex; justify-content: center; gap: clamp(17px, 3.4vw, 50px); }
.main-nav a, .header-link { font-size: 12px; font-weight: 600; text-decoration: none; letter-spacing: .04em; }
.header-link { flex: 0 0 auto; padding: 7px 0; color: var(--green-deep); }
.header-link span { padding-left: 3px; }

.hero { position: relative; display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(230px, .65fr); align-items: center; gap: 8%; min-height: 515px; padding-block: 79px 92px; }
.hero-copy { max-width: 695px; }
.eyebrow { margin: 0 0 21px; color: var(--green); font-size: 10px; font-weight: 700; letter-spacing: .17em; line-height: 1.7; }
.eyebrow-dot { display: inline-block; width: 7px; height: 7px; margin: 0 9px 1px 0; border-radius: 100%; background: var(--green); }
h1, h2, h3, h4, p { margin-top: 0; }
.hero h1 { margin: 0; font-family: var(--serif); font-size: clamp(42px, 6.7vw, 79px); font-weight: 500; letter-spacing: .025em; line-height: 1.38; }
.hero h1 em { color: var(--green); font-style: normal; }
.hero-lede { max-width: 575px; margin: 28px 0 21px; color: #555d55; font-size: 14px; line-height: 2.05; }
.text-link { display: inline-flex; gap: 15px; align-items: center; color: var(--green-deep); font-size: 13px; font-weight: 700; text-decoration: none; }
.text-link span { display: grid; width: 27px; height: 27px; place-items: center; border: 1px solid #aab5a4; border-radius: 100%; transition: transform .18s ease; }
.text-link:hover span { transform: translateY(3px); }
.hero-note { position: relative; justify-self: end; width: min(100%, 265px); padding: 28px 25px 25px; background: var(--green-pale); }
.note-index { color: var(--green); font-size: 9px; font-weight: 700; letter-spacing: .13em; }
.hero-note p { margin: 25px 0 22px; font-family: var(--serif); font-size: 24px; line-height: 1.9; }
.note-rule { display: block; width: 36px; height: 2px; background: #7b9679; }
.note-caption { display: block; margin-top: 15px; color: #646e63; font-size: 10px; }
.hero-bottom { position: absolute; right: 0; bottom: 27px; left: 0; display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: 10px; letter-spacing: .07em; }
.scroll-mark { color: var(--green); font-size: 16px; }

.intro-band { background: var(--paper-deep); }
.intro-inner { display: grid; grid-template-columns: 190px 1fr; gap: 5%; align-items: start; padding-block: 37px; }
.section-label { margin: 4px 0 0; color: var(--green); font-size: 10px; font-weight: 700; letter-spacing: .08em; }
.intro-text { margin: 0; font-family: var(--serif); font-size: clamp(18px, 2.15vw, 24px); line-height: 1.9; }
.intro-text strong { color: var(--green-deep); font-weight: 500; }

.notes-section { padding-top: 91px; padding-bottom: 93px; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 24px; padding-bottom: 29px; border-bottom: 1px solid var(--line); }
.section-heading .eyebrow { margin-bottom: 9px; }
.section-heading h2, .principles-title h2 { margin-bottom: 0; font-family: var(--serif); font-size: clamp(29px, 4vw, 42px); font-weight: 500; letter-spacing: .025em; line-height: 1.55; }
.heading-aside { margin-bottom: 2px; color: var(--muted); font-size: 11px; line-height: 1.8; }
.note-article { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 6%; padding: 42px 0 48px; border-bottom: 1px solid var(--line); }
.article-meta { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; padding-top: 7px; color: var(--muted); font-size: 11px; }
.article-meta span:first-child { color: var(--green); font-family: var(--serif); font-size: 31px; line-height: 1.2; }
.article-meta span:nth-child(2) { color: var(--ink); font-size: 13px; font-weight: 700; }
.article-content { max-width: 735px; }
.article-content h3 { margin: 0 0 14px; font-family: var(--serif); font-size: clamp(25px, 3.2vw, 34px); font-weight: 500; line-height: 1.55; }
.article-lead { max-width: 660px; margin-bottom: 24px; color: #596059; font-size: 13px; line-height: 2.05; }
.steps-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.steps-grid > div { min-height: 133px; padding: 16px 15px 16px 0; }
.steps-grid > div + div { padding-left: 17px; border-left: 1px solid var(--line); }
.step-num { color: var(--green); font-size: 10px; font-weight: 700; letter-spacing: .14em; }
.steps-grid h4 { margin: 4px 0 4px; font-size: 12px; }
.steps-grid p { margin: 0; color: var(--muted); font-size: 10px; line-height: 1.9; }
.prompt-card { margin-top: 21px; padding: 18px 22px; border-left: 2px solid var(--green); background: var(--white); }
.prompt-head { display: flex; justify-content: space-between; color: var(--green); font-size: 10px; font-weight: 700; }
.prompt-head span:last-child { color: #777f75; font-weight: 500; }
.prompt-card p { margin: 8px 0 0; color: #414940; font-size: 11px; line-height: 2.05; }
.prompt-insert { color: #728071; }
.article-footnote { margin: 15px 0 0; color: var(--muted); font-size: 10px; line-height: 1.9; }
.example-box { padding: 19px 21px 16px; background: var(--green-pale); }
.example-title { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; font-size: 12px; font-weight: 700; }
.example-icon { display: grid; width: 24px; height: 24px; place-items: center; border-radius: 50%; color: var(--white); background: var(--green); font-size: 12px; }
.simple-list { margin: 0; padding-left: 19px; color: #535e53; font-size: 11px; line-height: 2.05; }
.workflow-list { border-top: 1px solid var(--line); }
.workflow-list > div { display: grid; grid-template-columns: 43px 1fr; gap: 12px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.workflow-list > div > span { color: var(--green); font-family: var(--serif); font-size: 16px; }
.workflow-list h4 { margin: 0 0 3px; font-size: 12px; }
.workflow-list p { margin: 0; color: var(--muted); font-size: 10px; line-height: 1.85; }

.principles-section { padding: 72px 0 75px; background: var(--green-deep); color: var(--white); }
.principles-wrap { display: grid; grid-template-columns: .9fr 1.1fr; gap: 9%; align-items: start; }
.principles-title .eyebrow { color: #b8c8ad; }
.principles-title h2 { font-size: clamp(29px, 3.8vw, 39px); }
.check-list { margin: 0; padding: 0; list-style: none; }
.check-list li { display: grid; grid-template-columns: 40px 1fr; gap: 9px; padding: 12px 0; border-bottom: 1px solid rgb(255 255 255 / 22%); }
.check-list li:first-child { padding-top: 0; }
.check-list li > span { color: #c8d5bf; font-family: var(--serif); font-size: 13px; }
.check-list p { margin: 0; font-size: 12px; line-height: 1.7; }
.check-list small { color: #ccd4c7; font-size: 10px; }

.channel-section { padding-top: 72px; padding-bottom: 76px; }
.channel-card { display: grid; grid-template-columns: 44px 1fr auto; align-items: center; gap: 25px; padding: 30px 33px; border: 1px solid var(--line); background: #f4f2ea; }
.channel-mark { display: grid; width: 42px; height: 42px; place-items: center; border: 1px solid #b8c4b2; border-radius: 50%; color: var(--green); font-size: 13px; }
.channel-copy .eyebrow { margin: 0 0 6px; }
.channel-copy h2 { margin: 0 0 5px; font-family: var(--serif); font-size: clamp(20px, 2.5vw, 26px); font-weight: 500; line-height: 1.5; }
.channel-copy > p:last-child { max-width: 610px; margin: 0; color: var(--muted); font-size: 10px; line-height: 1.8; }
.button-link { display: inline-flex; gap: 13px; align-items: center; justify-content: center; padding: 12px 17px; color: var(--white); background: var(--green); font-size: 11px; font-weight: 600; text-decoration: none; white-space: nowrap; }
.button-link:hover { color: var(--white); background: var(--green-deep); }

.site-footer { border-top: 1px solid var(--line); background: #f0efe8; }
.footer-main { display: grid; grid-template-columns: 1fr 1.2fr 1fr; gap: 24px; align-items: start; padding-top: 37px; padding-bottom: 32px; }
.footer-wordmark { align-self: start; }
.footer-description { margin: 0; color: var(--muted); font-size: 10px; line-height: 1.8; }
.footer-nav { display: flex; flex-direction: column; align-items: flex-start; gap: 5px; font-size: 10px; }
.footer-nav a { text-decoration: none; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 11px; padding-bottom: 16px; border-top: 1px solid var(--line); color: #73786f; font-size: 9px; }

.subpage { max-width: 850px; padding-top: 82px; padding-bottom: 95px; }
.subpage > .eyebrow { margin-bottom: 11px; }
.subpage h1 { margin: 0; font-family: var(--serif); font-size: clamp(38px, 6vw, 60px); font-weight: 500; letter-spacing: .03em; line-height: 1.5; }
.subpage-lede { max-width: 690px; margin: 19px 0 28px; color: #586058; font-family: var(--serif); font-size: 18px; line-height: 2; }
.updated-note { margin: 0; padding: 13px 16px; border-left: 2px solid var(--green); background: var(--green-pale); color: #4d584d; font-size: 11px; line-height: 1.9; }
.content-section { display: grid; grid-template-columns: 175px 1fr; gap: 5%; padding: 34px 0; border-bottom: 1px solid var(--line); }
.content-section:first-of-type { margin-top: 16px; }
.content-section .section-label { padding-top: 5px; }
.prose { max-width: 620px; }
.prose h2 { margin: 0 0 13px; font-family: var(--serif); font-size: 23px; font-weight: 500; line-height: 1.65; }
.prose p { margin-bottom: 12px; color: #535b53; font-size: 12px; line-height: 2.05; }
.prose p:last-child { margin-bottom: 0; }
.prose ul { margin: 0; padding-left: 1.4em; color: #535b53; font-size: 12px; line-height: 2.15; }
.info-list { margin: 12px 0 15px; }
.info-list > div { display: grid; grid-template-columns: 128px 1fr; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 11px; line-height: 1.8; }
.info-list dt { color: var(--muted); }
.info-list dd { margin: 0; }
.prose .small-print { color: #73786f; font-size: 10px; }
.back-link { display: inline-block; margin-top: 31px; color: var(--green-deep); font-size: 12px; font-weight: 700; text-decoration: none; }

@media (min-width: 1450px) { .site-header { padding-inline: max(5.2%, calc((100vw - 1300px) / 2)); } }
@media (max-width: 760px) {
  .wrap { width: min(100% - 40px, 640px); }
  .site-header { min-height: 69px; padding-inline: 20px; gap: 13px; }
  .wordmark { gap: 8px; font-size: 13px; }
  .wordmark-mark { width: 27px; height: 27px; }
  .main-nav { gap: 13px; }
  .main-nav a { font-size: 10px; }
  .header-link { font-size: 10px; }
  .hero { grid-template-columns: 1fr; gap: 25px; min-height: 0; padding-block: 64px 90px; }
  .hero h1 { font-size: clamp(43px, 10.5vw, 66px); }
  .hero-note { justify-self: start; width: min(100%, 360px); padding: 18px 20px; }
  .hero-note p { margin-block: 12px; font-size: 20px; }
  .hero-bottom { bottom: 23px; }
  .intro-inner { grid-template-columns: 1fr; gap: 10px; padding-block: 27px; }
  .notes-section { padding-block: 63px; }
  .note-article { grid-template-columns: 1fr; gap: 15px; padding-block: 29px 35px; }
  .article-meta { flex-direction: row; flex-wrap: wrap; align-items: baseline; gap: 9px 15px; padding: 0; }
  .article-meta span:first-child { font-size: 24px; }
  .steps-grid > div { padding-right: 8px; }
  .steps-grid > div + div { padding-left: 10px; }
  .principles-wrap { grid-template-columns: 1fr; gap: 26px; }
  .principles-section { padding-block: 52px; }
  .channel-card { grid-template-columns: 39px 1fr; gap: 15px; padding: 21px; }
  .channel-mark { width: 37px; height: 37px; }
  .button-link { grid-column: 2; justify-self: start; }
  .channel-section { padding-block: 50px; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 17px; }
  .footer-description { grid-column: 1 / -1; grid-row: 2; }
  .footer-nav { grid-column: 2; grid-row: 1 / span 2; }
  .footer-bottom { flex-direction: column; gap: 3px; }
  .subpage { padding-top: 58px; padding-bottom: 65px; }
  .content-section { grid-template-columns: 1fr; gap: 12px; padding-block: 25px; }
  .content-section .section-label { padding: 0; }
}
@media (max-width: 460px) {
  body { font-size: 14px; }
  .wrap { width: calc(100% - 34px); }
  .site-header { flex-wrap: wrap; min-height: 0; padding: 12px 17px 10px; }
  .wordmark { margin-right: auto; }
  .main-nav { order: 3; width: 100%; justify-content: space-between; padding-top: 7px; border-top: 1px solid var(--line); }
  .main-nav a { font-size: 10px; }
  .hero { padding-top: 49px; }
  .hero h1 { font-size: 41px; }
  .hero-lede { font-size: 13px; }
  .hero-note { width: 100%; }
  .hero-bottom { font-size: 9px; }
  .section-heading { align-items: start; flex-direction: column; gap: 9px; }
  .heading-aside br { display: none; }
  .section-heading h2 { font-size: 30px; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid > div { min-height: 114px; padding: 12px 11px 12px 0; }
  .steps-grid > div + div { padding-left: 12px; }
  .steps-grid > div:nth-child(3) { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .steps-grid > div:nth-child(4) { border-top: 1px solid var(--line); }
  .prompt-card { padding: 15px; }
  .channel-card { grid-template-columns: 1fr; }
  .button-link { grid-column: 1; }
  .footer-main { grid-template-columns: 1fr; }
  .footer-description, .footer-nav { grid-column: 1; grid-row: auto; }
  .footer-nav { padding-top: 9px; border-top: 1px solid var(--line); }
  .info-list > div { grid-template-columns: 105px 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}