@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,700;1,9..40,400&family=Noto+Sans+JP:wght@400;500;700;900&display=swap');

:root {
  --ink: #1a1f2e;
  --body: #4a5568;
  --muted: #8896a6;
  --paper: #fafbfc;
  --paper-warm: #f5f7f9;
  --white: #ffffff;
  --line: #e2e8f0;
  --mint: #e8f2f7;
  --lime: #9dcbde;
  --yellow: #e8f2f7;
  --coral: #3a7ca5;
  --dark: #1e3a5f;
  --radius: 12px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, .04);
  --shadow-hover: 0 12px 32px rgba(30, 58, 95, .06);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    linear-gradient(rgba(226, 232, 240, .42) 1px, transparent 1px),
    linear-gradient(90deg, rgba(226, 232, 240, .42) 1px, transparent 1px),
    var(--paper);
  background-size: 32px 32px;
  color: var(--ink);
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--coral); }
.wrap { width: min(1200px, calc(100% - 48px)); margin: auto; }
.site-header { min-height: 82px; display: flex; justify-content: space-between; align-items: center; gap: 24px; border-bottom: 1px solid var(--line); background: rgba(250, 251, 252, .82); }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-family: "DM Sans", sans-serif; font-size: 12px; font-weight: 700; letter-spacing: .13em; line-height: 1.16; color: var(--ink); }
.brand-dot { width: 20px; height: 20px; border-radius: 6px; display: inline-block; background: linear-gradient(90deg, var(--dark) 0 36%, var(--lime) 36% 53%, var(--coral) 53% 100%); border: 0; box-shadow: none; }
nav { display: flex; gap: 20px; flex-wrap: wrap; justify-content: flex-end; }
nav a { text-decoration: none; color: var(--muted); font-size: 13px; font-weight: 500; padding: 5px 0; border-bottom: 2px solid transparent; }
nav a:hover, nav a.is-active { color: var(--coral); border-color: var(--coral); }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(38px, 5vw, 58px); font-weight: 900; letter-spacing: -.05em; line-height: 1.28; margin-bottom: 24px; }
h2 { font-size: clamp(27px, 3.8vw, 42px); font-weight: 900; letter-spacing: -.04em; line-height: 1.38; margin-bottom: 0; }
h3 { font-size: 19px; font-weight: 700; letter-spacing: -.02em; line-height: 1.5; }
.eyebrow { color: var(--coral); font-family: "DM Sans", sans-serif; font-size: 11px; font-weight: 700; letter-spacing: .19em; line-height: 1.3; margin: 0 0 17px; }
.lede { max-width: 660px; color: var(--body); font-size: 16px; line-height: 2; margin-bottom: 28px; }
.hero { padding: 88px 0 74px; display: grid; grid-template-columns: 1.35fr .65fr; align-items: end; gap: 52px; }
.article-hero { padding: 78px 0 56px; display: grid; grid-template-columns: 1.25fr .55fr; gap: 80px; align-items: end; }
.article-hero h1 { font-size: clamp(38px, 5vw, 58px); }
.hero-note, .hero-aside { border-top: 2px solid var(--coral); padding: 17px 0 0; display: flex; gap: 14px; }
.hero-note p, .hero-aside p { color: var(--body); font-size: 14px; margin: 6px 0; }
.note-mark { display: grid; place-content: center; flex: 0 0 28px; height: 28px; border-radius: 50%; background: var(--coral); color: #fff; font-family: "DM Sans", sans-serif; font-weight: 700; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 11px 22px; text-decoration: none; border: 1px solid transparent; font-weight: 700; font-size: 14px; border-radius: 100px; transition: transform .2s, box-shadow .2s, background .2s; }
.button:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.button-primary { background: var(--dark); color: #fff; box-shadow: 0 8px 24px rgba(58, 124, 165, .20); }
.button-secondary { color: var(--coral); background: var(--white); border-color: var(--line); }
.hero-links { display: flex; gap: 12px; flex-wrap: wrap; }
.tool-section { padding: 62px 0 88px; background: var(--mint); }
.section { padding: 92px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 32px; margin-bottom: 32px; }
.section-heading > p { max-width: 390px; color: var(--body); margin-bottom: 2px; }
.finder { display: grid; grid-template-columns: .85fr 1.15fr; gap: 20px; }
.finder-controls, .answer-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-card); }
.finder-controls { padding: 27px; }
fieldset { border: 0; padding: 0; margin: 0; }
fieldset + fieldset { border-top: 1px solid var(--line); margin-top: 25px; padding-top: 25px; }
legend { font-weight: 800; font-size: 15px; margin-bottom: 10px; }
.select-wrap select { width: 100%; appearance: none; background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 12px 15px; color: var(--ink); font: inherit; font-weight: 700; }
.field-note, .reviewed, .caption, .stat-source { color: var(--muted); font-size: 12px; }
.field-note { margin: 9px 0 0; }
.choice-grid { display: grid; gap: 8px; }
.choice { border: 1px solid var(--line); background: #fff; text-align: left; padding: 11px 12px; font: inherit; font-size: 14px; cursor: pointer; border-radius: 8px; }
.choice:hover, .choice.is-selected { border-color: var(--coral); background: var(--yellow); }
.answer-card { padding: 38px; display: flex; flex-direction: column; align-items: flex-start; }
.answer-kicker { color: var(--muted); font-weight: 700; font-size: 12px; margin-bottom: 10px; }
.answer-card h3 { font-size: clamp(25px, 3vw, 37px); letter-spacing: -.045em; margin: 0 0 15px; }
.answer-card > p:not(.answer-kicker):not(.answer-note):not(.reviewed) { font-size: 16px; max-width: 640px; margin-bottom: 14px; }
.answer-note { border-left: 3px solid var(--coral); padding-left: 12px; color: var(--body); font-size: 13px; }
.source-link { margin-top: auto; padding-top: 18px; font-weight: 800; }
.reviewed { margin: 6px 0 0; }
.index-grid, .type-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.index-card { min-height: 245px; background: var(--white); padding: 24px; display: flex; flex-direction: column; text-decoration: none; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-card); transition: border .2s, box-shadow .2s, transform .2s; }
.index-card:hover, .taxonomy-card:hover { transform: translateY(-3px); border-color: var(--lime); box-shadow: var(--shadow-hover); }
.index-card > span, .card-number { color: var(--coral); font-size: 12px; font-weight: 800; }
.index-card h3 { margin: 34px 0 10px; }
.index-card p, .type-grid p { color: var(--body); font-size: 14px; margin-bottom: 14px; }
.index-card b, .taxonomy-card b { font-size: 13px; margin-top: auto; }
.topic-strip { padding: 20px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); display: flex; gap: 22px; align-items: center; }
.topic-strip p { font-size: 12px; font-weight: 800; margin: 0; white-space: nowrap; }
.topic-strip div, .inline-links { display: flex; flex-wrap: wrap; gap: 8px; }
.topic-strip a, .tag { display: inline-flex; background: var(--white); border: 1px solid var(--line); border-radius: 99px; padding: 4px 10px; text-decoration: none; font-size: 12px; }
.principle, .two-column, .source-panel, .recall-section, .spec-read { display: grid; grid-template-columns: .8fr 1.2fr; gap: 11%; }
.principle { padding: 92px 0; }
.principle-copy, .article-body { max-width: 580px; color: var(--body); font-size: 16px; line-height: 2; }
.text-link { color: var(--coral); font-weight: 700; }
.type-grid article { padding: 22px; min-height: 235px; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-card); }
.type-grid h3 { margin: 33px 0 8px; }
.factor-list { padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--line); }
.factor-list li { display: grid; grid-template-columns: 82px 1fr; gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.factor-list span { color: var(--coral); font-weight: 800; }
.factor-list h3 { margin: 0 0 5px; }
.factor-list p { color: var(--body); margin: 0; }
.source-panel { background: var(--dark); color: #fff; padding: 46px; border-radius: var(--radius); box-shadow: var(--shadow-card); }
.source-panel .eyebrow, .relationship .eyebrow { color: var(--lime); }
.source-panel p, .relationship p { color: rgba(255,255,255,.70); }
.inline-links { gap: 16px; }
.inline-links a { color: #fff; font-weight: 800; }
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-card); }
.stat-grid div { background: var(--white); min-height: 180px; padding: 25px; display: flex; flex-direction: column; justify-content: space-between; }
.stat-grid strong { font-size: clamp(42px, 6vw, 72px); letter-spacing: -.08em; line-height: 1; }
.stat-grid span { font-size: 13px; font-weight: 700; }
.stat-source { margin-top: 10px; }
.warning-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.warning-grid article { padding: 22px; border-top: 3px solid var(--coral); background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow-card); }
.warning-grid span { font-weight: 800; color: var(--coral); }
.warning-grid h3 { margin: 23px 0 8px; }
.warning-grid p { color: var(--body); font-size: 14px; }
.recall-section { background: var(--mint); padding: 48px; border-radius: var(--radius); }
.recall-actions { display: grid; gap: 10px; }
.recall-actions a { color: var(--ink); text-decoration: none; padding: 18px; background: var(--white); border: 1px solid var(--line); border-radius: 8px; display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.recall-actions span { font-size: 13px; font-weight: 700; }
.action-panel { background: var(--mint); padding: 54px; margin-bottom: 88px; border-radius: var(--radius); }
.action-panel > p:not(.eyebrow) { max-width: 650px; color: var(--body); margin: 20px 0; }
.product-grid, .product-picks, .taxonomy-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.product-card, .product-pick { border: 1px solid var(--line); background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow-card); padding: 22px; min-height: 260px; display: flex; flex-direction: column; }
.product-card > p, .product-pick > p { font-size: 11px; color: var(--muted); font-weight: 800; letter-spacing: .1em; }
.product-card h3, .product-pick h3 { margin: 5px 0 11px; }
.tag { align-self: flex-start; background: var(--mint); border-color: transparent; }
.product-card ul, .product-pick ul { padding-left: 18px; color: var(--body); font-size: 13px; margin: 17px 0; }
.product-card a, .product-pick a { color: var(--coral); font-weight: 700; font-size: 13px; margin-top: auto; }
.catalog-intro { padding-bottom: 72px; }
.catalog-rule-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.catalog-rule-grid article { min-height: 205px; padding: 24px; background: var(--white); border: 1px solid var(--line); border-top: 3px solid var(--coral); border-radius: var(--radius); box-shadow: var(--shadow-card); }
.catalog-rule-grid span, .catalog-maker { color: var(--coral); font-family: "DM Sans", sans-serif; font-size: 12px; font-weight: 700; letter-spacing: .14em; }
.catalog-rule-grid h3 { margin: 28px 0 8px; }
.catalog-rule-grid p { color: var(--body); font-size: 14px; margin: 0; }
.catalog-section { padding-top: 72px; }
.catalog-entry { display: grid; grid-template-columns: .72fr 1.28fr; gap: 54px; padding: 28px; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-card); }
.catalog-photo-stage { min-height: 340px; padding: 28px; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; background: linear-gradient(rgba(157, 203, 222, .10), rgba(157, 203, 222, .10)), linear-gradient(rgba(226, 232, 240, .80) 1px, transparent 1px), linear-gradient(90deg, rgba(226, 232, 240, .80) 1px, transparent 1px), var(--paper-warm); background-size: auto, 22px 22px, 22px 22px, auto; border: 1px dashed var(--lime); border-radius: 9px; }
.catalog-photo-stage span { color: var(--coral); font-family: "DM Sans", sans-serif; font-size: 11px; font-weight: 700; letter-spacing: .16em; }
.catalog-photo-stage p { margin: 8px 0 0; color: var(--body); font-size: 16px; font-weight: 700; }
.catalog-photo-stage small { margin-top: 18px; color: var(--muted); font-family: "DM Sans", sans-serif; font-size: 10px; font-weight: 700; letter-spacing: .1em; }
.catalog-record { max-width: 690px; }
.catalog-maker { margin: 0 0 9px; }
.catalog-record h3 { margin: 0 0 14px; font-size: clamp(21px, 2.4vw, 29px); }
.catalog-lede { color: var(--body); font-size: 15px; line-height: 1.95; }
.catalog-facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 24px; margin: 23px 0; border-top: 1px solid var(--line); }
.catalog-facts div { padding: 12px 0; border-bottom: 1px solid var(--line); }
.catalog-facts dt { color: var(--muted); font-size: 12px; font-weight: 700; }
.catalog-facts dd { margin: 3px 0 0; color: var(--ink); font-size: 14px; font-weight: 700; }
.catalog-followup { display: grid; grid-template-columns: .72fr 1.28fr; gap: 54px; margin-top: 18px; padding: 31px 28px 0; border-top: 1px solid var(--line); }
.catalog-followup h3 { margin: 0; }
.catalog-checks { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.catalog-checks li { display: grid; grid-template-columns: 42px 1fr; gap: 14px; align-items: center; padding: 13px 0; border-bottom: 1px solid var(--line); color: var(--body); font-size: 14px; }
.catalog-checks b { color: var(--coral); font-family: "DM Sans", sans-serif; font-size: 12px; letter-spacing: .08em; }
.spec-read ol { padding: 0; margin: 0; list-style: none; }
.spec-read li { display: grid; grid-template-columns: 130px 1fr; gap: 15px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.spec-read span { color: var(--muted); }
.glossary-list article { display: grid; grid-template-columns: 230px 1fr; gap: 35px; padding: 21px 0; border-top: 1px solid var(--line); }
.glossary-list article:last-child { border-bottom: 1px solid var(--line); }
.glossary-list h3 { margin: 0; }
.glossary-list p, .faq-list p { color: var(--body); margin: 0; }
.faq-list { padding-top: 22px; }
.faq-list article { display: grid; grid-template-columns: 60px 1fr; gap: 20px; padding: 27px 0; border-top: 1px solid var(--line); }
.faq-list article > span { color: var(--coral); font-weight: 800; }
.faq-list h2 { font-size: 22px; margin: 0 0 12px; letter-spacing: -.02em; }
.taxonomy-card { min-height: 268px; padding: 24px; text-decoration: none; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-card); display: flex; flex-direction: column; transition: transform .2s, border .2s, box-shadow .2s; }
.taxonomy-card span { color: var(--coral); font-size: 12px; font-weight: 800; }
.taxonomy-card h3 { margin: 28px 0 10px; }
.taxonomy-card p { color: var(--body); font-size: 14px; }
.relationship { background: var(--dark); color: #fff; padding: 46px; border-radius: var(--radius); box-shadow: var(--shadow-card); display: grid; grid-template-columns: 1fr 1fr; gap: 8%; }
.relationship ul { margin: 0; padding: 0; list-style: none; }
.relationship li { padding: 12px 0; border-top: 1px solid rgba(255,255,255,.18); }
.relationship strong { color: var(--lime); }
.price-status { margin-top: 28px; background: var(--mint); padding: 22px; border-left: 4px solid var(--coral); border-radius: 0 var(--radius) var(--radius) 0; }
.price-status h3 { margin-bottom: 7px; }
.price-status p { color: var(--body); font-size: 14px; margin: 0; }
.definition-table { border-top: 1px solid var(--line); }
.definition-row { padding: 24px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 160px 1fr 150px; gap: 20px; }
.definition-row h3, .definition-row p { margin: 0; }
.definition-row p { color: var(--body); font-size: 14px; }
.definition-row a { color: var(--coral); font-size: 13px; font-weight: 700; }
.article-summary { padding-bottom: 66px; }
.article-answer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 32px; }
.article-answer-grid article { min-height: 250px; padding: 24px; background: var(--white); border: 1px solid var(--line); border-top: 3px solid var(--coral); border-radius: var(--radius); box-shadow: var(--shadow-card); }
.article-answer-grid span { color: var(--coral); font-size: 12px; font-weight: 800; }
.article-answer-grid h3 { margin: 30px 0 9px; }
.article-answer-grid p { color: var(--body); font-size: 14px; margin: 0; }
.article-answer-grid sup, .relationship sup { line-height: 0; }
sup a { color: var(--coral); font-size: 11px; font-weight: 800; text-decoration: none; }
.term-flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 42px; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--line); box-shadow: var(--shadow-card); }
.term-flow article { min-height: 210px; padding: 24px; background: var(--white); }
.term-flow span { display: inline-flex; padding: 4px 10px; color: var(--ink); background: var(--yellow); border-radius: 99px; font-size: 12px; font-weight: 800; }
.term-flow h3 { margin: 30px 0 10px; }
.term-flow p { margin: 0; color: var(--body); font-size: 14px; }
.definition-row-wide { grid-template-columns: 150px 1fr 1fr; }
.definition-row small { color: var(--coral); font-size: 12px; letter-spacing: .08em; }
.definition-row-wide p { line-height: 1.75; }
.definition-row-wide strong { color: var(--ink); font-size: 13px; }
.check-list { padding: 0; margin: 34px 0 0; list-style: none; border-top: 1px solid var(--line); }
.check-list li { display: grid; grid-template-columns: 58px 1fr; gap: 20px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.check-list span { display: grid; place-content: center; width: 34px; height: 34px; color: var(--ink); background: var(--lime); border: 1px solid var(--ink); border-radius: 50%; font-size: 13px; font-weight: 900; }
.check-list h3 { margin: 0 0 4px; }
.check-list p { color: var(--body); margin: 0; }
.footnotes { padding-top: 58px; }
.footnotes h2 { margin-bottom: 30px; }
.footnotes ol { max-width: 880px; padding-left: 24px; color: var(--body); }
.footnotes li { padding: 14px 0 14px 5px; border-top: 1px solid var(--line); font-size: 14px; }
.footnotes li:last-child { border-bottom: 1px solid var(--line); }
.footnotes a { color: var(--coral); font-weight: 700; }
.inline-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.site-footer { padding: 44px 0; display: grid; grid-template-columns: 180px 1fr 1.25fr; gap: 26px; border-top: 1px solid var(--line); color: var(--body); font-size: 13px; }
.site-footer p { margin: 0; }
.footer-note { font-size: 12px; }

@media (max-width: 800px) {
  .wrap { width: min(100% - 30px, 1200px); }
  .site-header { min-height: auto; padding: 18px 0; align-items: flex-start; }
  nav { gap: 9px 14px; }
  nav a { font-size: 12px; }
  .hero, .article-hero, .finder, .two-column, .source-panel, .recall-section, .spec-read, .principle, .relationship { grid-template-columns: 1fr; gap: 30px; }
  .hero { padding: 57px 0; }
  .article-hero { padding: 58px 0 40px; }
  .section-heading { display: block; }
  .section-heading > p { margin-top: 15px; }
  .index-grid, .type-grid, .warning-grid, .taxonomy-grid, .product-grid, .product-picks, .article-answer-grid, .term-flow, .catalog-rule-grid { grid-template-columns: repeat(2, 1fr); }
  .catalog-entry, .catalog-followup { grid-template-columns: 1fr; gap: 26px; }
  .stat-grid { grid-template-columns: 1fr; }
  .stat-grid div { min-height: 130px; }
  .topic-strip { align-items: flex-start; flex-direction: column; gap: 10px; }
  .definition-row, .definition-row-wide { grid-template-columns: 1fr; gap: 8px; }
  .site-footer { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  h1, .article-hero h1 { font-size: 39px; }
  h2 { font-size: 29px; }
  .index-grid, .type-grid, .warning-grid, .taxonomy-grid, .product-grid, .product-picks, .article-answer-grid, .term-flow, .catalog-rule-grid { grid-template-columns: 1fr; }
  .index-card { min-height: 190px; }
  .answer-card, .finder-controls, .source-panel, .recall-section, .action-panel { padding: 24px; }
  .catalog-entry { padding: 18px; }
  .catalog-photo-stage { min-height: 230px; }
  .catalog-followup { padding: 26px 0 0; }
  .catalog-facts { grid-template-columns: 1fr; }
  .glossary-list article, .spec-read li { grid-template-columns: 1fr; gap: 6px; }
  .faq-list article { grid-template-columns: 38px 1fr; gap: 8px; }
}