:root {
  color-scheme: light;
  --paper: #f7f8f4;
  --surface: #fff;
  --ink: #213d33;
  --muted: #68736c;
  --line: #dde3da;
  --green: #315e49;
  --mint: #eaf0e5;
  --soft: #f3f6ef;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-size: 16px; line-height: 1.65; }
button, input { font: inherit; }
button, summary, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
a { color: inherit; text-underline-offset: 4px; }
svg { display: block; width: 24px; height: 24px; flex-shrink: 0; }
button, a, summary, input { outline-offset: 5px; }
:focus-visible { outline: 2px solid var(--green); }
[hidden] { display: none !important; }
.wrap { width: min(1120px, calc(100% - 80px)); margin-inline: auto; }
.skip-link { position: absolute; z-index: 10; left: 24px; top: -80px; padding: 10px 18px; background: white; }
.skip-link:focus { top: 12px; }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner { min-height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 14px; }
.wordmark { display: flex; align-items: center; gap: 2px; font-size: 24px; font-weight: 800; letter-spacing: -.065em; line-height: 1; }
.wordmark::after { content: ""; display: block; margin: 12px 0 0 4px; height: 6px; width: 6px; border-radius: 50%; background: var(--green); }
.brand-name { font-size: 14px; padding-left: 15px; border-left: 1px solid #cdd6cc; letter-spacing: .035em; }
.company { text-align: right; line-height: 1.4; font-size: 15px; font-weight: 600; }
.company small { display: block; color: var(--muted); font-size: 10px; letter-spacing: .17em; font-weight: 500; margin-top: 3px; }
.hero { display: grid; grid-template-columns: 1.2fr 1fr; gap: 64px; align-items: center; padding-block: 54px 46px; }
.eyebrow { display: flex; align-items: center; gap: 9px; font-size: 12px; letter-spacing: .06em; color: var(--green); margin: 0 0 14px; }
.eyebrow::before { content: ""; width: 20px; height: 2px; background: var(--green); }
h1 { font-size: clamp(32px, 3.8vw, 46px); line-height: 1.25; letter-spacing: -.035em; font-weight: 700; margin: 0 0 17px; }
.intro { color: var(--muted); font-size: 15px; line-height: 1.9; margin: 0; max-width: 34em; }
.start-panel { background: var(--mint); border-radius: 18px; padding: 22px 24px 10px; }
.start-label { margin: 0 0 12px; color: var(--green); font-size: 12px; font-weight: 600; letter-spacing: .045em; }
.start-link { display: flex; align-items: center; gap: 12px; padding: 12px 0; text-decoration: none; border-top: 1px solid #d5dfce; font-size: 15px; line-height: 1.6; }
.start-link .order { color: #69806d; font-size: 12px; font-variant-numeric: tabular-nums; }
.start-link .arrow { margin-left: auto; width: 18px; height: 18px; transition: transform .18s ease; }
.start-link:hover .arrow { transform: translateX(3px); }
.handbook { border-top: 1px solid var(--line); padding-top: 28px; }
.browse-bar { display: flex; justify-content: space-between; align-items: flex-end; gap: 28px; margin-bottom: 28px; }
.filter-label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 10px; }
.filters { display: flex; flex-wrap: wrap; gap: 7px; }
.filter { border: 1px solid transparent; color: #626e64; background: transparent; border-radius: 7px; padding: 8px 13px; font-size: 14px; line-height: 1.5; min-height: 40px; transition: background .15s ease, color .15s ease, transform .15s ease; }
.filter:hover { background: #e9eee5; }
.filter[aria-pressed="true"] { background: var(--green); color: #fff; }
.filter:active { transform: scale(.98); }
.search-field { width: 330px; flex-shrink: 0; }
.search-field label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 10px; }
.search-box { position: relative; display: flex; align-items: center; }
.search-box > svg { position: absolute; left: 13px; color: #738172; width: 19px; height: 19px; pointer-events: none; }
.search-box input { border: 1px solid #d3dcd0; background: #fff; color: var(--ink); border-radius: 8px; width: 100%; min-height: 43px; padding: 10px 43px 10px 41px; font-size: 14px; line-height: 1.5; appearance: none; -webkit-appearance: none; }
.search-box input::-webkit-search-cancel-button { display: none; }
.search-box input::placeholder { color: #798378; }
.clear-search { position: absolute; right: 4px; top: 3px; height: 37px; width: 37px; display: grid; place-items: center; color: var(--muted); border: 0; border-radius: 6px; background: transparent; }
.clear-search:hover { background: var(--soft); }
.clear-search svg { width: 16px; height: 16px; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 15px; margin-bottom: 14px; }
.section-heading h2 { margin: 0; font-size: 17px; line-height: 1.5; font-weight: 600; letter-spacing: .01em; }
.result-count { font-size: 12px; color: var(--muted); margin: 0; }
.guides { display: grid; gap: 12px; }
.guide { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; scroll-margin-top: 24px; overflow: clip; }
.guide[open] { border-color: #aabb9e; }
.guide summary { position: relative; display: flex; align-items: center; gap: 18px; padding: 24px 27px; cursor: pointer; list-style: none; }
.guide summary::-webkit-details-marker { display: none; }
.guide summary:hover { background: #fafbf8; }
.guide summary:focus-visible { outline-offset: -5px; border-radius: 14px; }
.guide-icon { width: 46px; height: 46px; border-radius: 12px; background: var(--soft); color: var(--green); flex-shrink: 0; display: grid; place-items: center; }
.guide-icon svg { width: 23px; height: 23px; }
.summary-content { flex: 1; min-width: 0; }
.guide-title { display: flex; align-items: baseline; gap: 10px; margin-bottom: 5px; }
.guide-title h3 { margin: 0; font-size: 17px; font-weight: 600; line-height: 1.5; }
.guide-number { color: #8c988c; font-size: 11px; font-variant-numeric: tabular-nums; }
.guide-description { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.category { font-size: 11px; color: #737f70; background: #f3f5ee; border-radius: 4px; padding: 3px 8px; white-space: nowrap; }
.toggle-icon { position: relative; width: 26px; height: 26px; flex-shrink: 0; margin-left: 9px; border-radius: 50%; border: 1px solid #d9e1d5; }
.toggle-icon::before, .toggle-icon::after { content: ""; position: absolute; left: 7px; top: 11px; width: 10px; height: 1px; background: var(--green); }
.toggle-icon::after { transform: rotate(90deg); transition: transform .18s ease; }
.guide[open] .toggle-icon::after { transform: rotate(0); }
.guide-body { padding: 0 28px 28px 91px; font-size: 14px; }
.guide-body-inner { padding-top: 24px; border-top: 1px solid var(--line); }
.steps { padding: 0; margin: 0; list-style: none; counter-reset: step; }
.steps > li { position: relative; padding-left: 37px; counter-increment: step; margin-top: 24px; }
.steps > li:first-child { margin-top: 0; }
.steps > li::before { content: counter(step); position: absolute; left: 0; top: 1px; width: 23px; height: 23px; border: 1px solid #cedbc5; border-radius: 50%; font-size: 11px; line-height: 21px; text-align: center; color: var(--green); font-weight: 600; }
.step-title { font-weight: 600; margin: 0 0 5px; font-size: 15px; line-height: 1.65; }
.step-body { margin: 0; color: #59695d; line-height: 1.95; max-width: 65ch; overflow-wrap: anywhere; }
.tips { margin-top: 26px; padding: 16px 19px; background: var(--soft); border-radius: 8px; color: #5d6d60; }
.tips-label { font-size: 12px; color: var(--green); font-weight: 600; margin: 0 0 7px; }
.tips p:not(.tips-label) { margin: 7px 0 0; font-size: 13px; line-height: 1.8; }
.guide-links { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 21px; }
.guide-links a { font-size: 13px; font-weight: 500; }
.source-note { color: var(--muted); font-size: 12px; margin: 18px 0 0; }
.empty { text-align: center; padding: 50px 20px; border: 1px dashed #cad5c5; border-radius: 14px; background: #fbfcf8; }
.empty p { margin: 0 0 8px; font-size: 16px; }
.empty small { color: var(--muted); display: block; font-size: 13px; }
.reset-filter { display: inline-block; margin-top: 18px; padding: 8px 17px; border: 1px solid #bfcdb8; border-radius: 7px; background: white; color: var(--green); font-size: 13px; }
.reading-note { display: flex; align-items: flex-start; gap: 10px; color: var(--muted); margin-top: 27px; font-size: 12px; }
.reading-note svg { width: 17px; height: 17px; margin-top: 2px; }
.reading-note p { margin: 0; }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); margin-top: 48px; padding-block: 23px 30px; color: var(--muted); font-size: 11px; }
.footer-brand { color: #5e705f; letter-spacing: .01em; }
.footer-meta { display: flex; align-items: center; gap: 18px; }
.footer-meta a { text-decoration: none; }
.footer-meta a:hover { text-decoration: underline; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (max-width: 820px) {
  .wrap { width: calc(100% - 48px); }
  .hero { gap: 32px; padding-block: 36px; grid-template-columns: 1.2fr 1fr; }
  h1 { font-size: 36px; }
  .intro { font-size: 14px; }
  .start-panel { padding: 18px 18px 6px; }
  .start-link { font-size: 13px; }
  .browse-bar { gap: 20px; }
  .search-field { width: 265px; }
  .filter { font-size: 13px; padding-inline: 10px; }
  .guide summary { padding: 22px; gap: 15px; }
  .guide-body { padding-left: 83px; padding-right: 24px; }
}
@media (max-width: 620px) {
  html { scroll-padding-top: 15px; }
  .wrap { width: calc(100% - 36px); }
  .header-inner { min-height: 73px; gap: 10px; }
  .brand { gap: 10px; }
  .wordmark { font-size: 23px; }
  .brand-name { font-size: 12px; padding-left: 10px; }
  .company { font-size: 13px; }
  .company small { font-size: 8px; letter-spacing: .1em; }
  .hero { display: block; padding: 28px 0 26px; }
  .eyebrow { font-size: 11px; margin-bottom: 12px; }
  h1 { font-size: 33px; margin-bottom: 12px; }
  .intro { font-size: 13px; line-height: 1.85; max-width: 30em; }
  .start-panel { margin-top: 23px; border-radius: 12px; padding: 15px 16px 8px; }
  .start-label { margin-bottom: 7px; font-size: 11px; }
  .start-links { display: grid; grid-template-columns: 1fr 1fr; }
  .start-link { padding: 10px 0; gap: 7px; font-size: 12px; border-top: 1px solid #d5dfce; }
  .start-link + .start-link { padding-left: 14px; }
  .start-link:first-child { padding-right: 14px; }
  .start-link .order { font-size: 10px; }
  .start-link .arrow { width: 14px; height: 14px; }
  .handbook { padding-top: 22px; }
  .browse-bar { flex-direction: column-reverse; align-items: stretch; gap: 17px; margin-bottom: 21px; }
  .search-field { width: 100%; }
  .search-field label { font-size: 11px; margin-bottom: 7px; }
  .search-box input { font-size: 14px; min-height: 44px; }
  .filter-label { display: none; }
  .filters { gap: 5px; }
  .filter { font-size: 12px; min-height: 36px; padding: 7px 13px; }
  .section-heading { margin-bottom: 12px; }
  .section-heading h2 { font-size: 15px; }
  .result-count { font-size: 11px; }
  .guides { gap: 10px; }
  .guide { border-radius: 12px; scroll-margin-top: 16px; }
  .guide summary { padding: 18px 14px; gap: 12px; align-items: flex-start; }
  .guide-icon { width: 34px; height: 37px; border-radius: 9px; margin-top: 1px; }
  .guide-icon svg { width: 19px; height: 19px; }
  .guide-title { gap: 6px; margin-bottom: 5px; }
  .guide-title h3 { font-size: 15px; line-height: 1.65; }
  .guide-number { display: none; }
  .guide-description { font-size: 12px; line-height: 1.8; }
  .category { display: none; }
  .toggle-icon { width: 21px; height: 21px; margin: 3px 0 0 0; }
  .toggle-icon::before, .toggle-icon::after { width: 9px; left: 5px; top: 9px; }
  .guide-body { padding: 0 18px 22px; }
  .guide-body-inner { padding-top: 20px; }
  .steps > li { padding-left: 32px; margin-top: 22px; }
  .step-title { font-size: 14px; }
  .step-body { font-size: 13px; line-height: 1.95; }
  .tips { margin-top: 22px; padding: 14px; }
  .tips p:not(.tips-label) { font-size: 12px; }
  .reading-note { font-size: 11px; gap: 8px; margin-top: 22px; }
  .site-footer { margin-top: 32px; padding-block: 21px 28px; flex-direction: column; align-items: flex-start; gap: 8px; font-size: 10px; }
  .footer-meta { width: 100%; justify-content: space-between; }
}
@media (max-width: 360px) {
  .wrap { width: calc(100% - 28px); }
  .brand-name { font-size: 11px; }
  .start-link { font-size: 11px; gap: 5px; }
  .start-link + .start-link { padding-left: 10px; }
  .start-link:first-child { padding-right: 10px; }
  .start-link .order { display: none; }
  .filter { padding-inline: 11px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}
@media print {
  body { background: white; }
  .wrap { width: 100%; }
  .browse-bar, .start-panel, .toggle-icon, .footer-meta a { display: none !important; }
  .hero { display: block; padding-block: 24px; }
  .guide { break-inside: avoid; }
  .guide-body { display: block !important; }
}