:root {
  --ink: #17382d;
  --ink-soft: #557067;
  --cream: #fbf9f2;
  --green: #0c7251;
  --green-dark: #07503a;
  --mint: #d8f0df;
  --lime: #d5f451;
  --peach: #ffb88a;
  --line: #dfe7df;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 3px solid var(--lime); outline-offset: 4px; border-radius: 4px; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 20; padding: 12px 16px; background: var(--ink); color: white; border-radius: 8px; }
.skip-link:focus { top: 16px; }
.site-header { background: rgba(251,249,242,.96); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; backdrop-filter: blur(14px); }
.header-inner, .page-width { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 21px; font-weight: 820; letter-spacing: -.04em; }
.brand b { color: var(--green); }
.brand-mark { width: 34px; height: 34px; border-radius: 50%; background: var(--green); position: relative; display: inline-block; box-shadow: inset -6px -5px 0 rgba(0,0,0,.08); }
.brand-mark::before { content: ""; position: absolute; width: 8px; height: 14px; background: var(--lime); border-radius: 9px 2px 9px 2px; left: 17px; top: -3px; transform: rotate(35deg); }
.brand-mark::after { content: ""; position: absolute; width: 9px; height: 9px; border: 3px solid var(--lime); border-left: 0; border-top: 0; left: 10px; top: 9px; transform: rotate(45deg); }
.site-nav { display: flex; align-items: center; gap: 24px; font-size: 14px; font-weight: 700; color: #355448; }
.site-nav a:hover, .footer-links a:hover { color: var(--green); }
.header-cta, .inline-cta { display: inline-flex; align-items: center; justify-content: center; border-radius: 999px; padding: 12px 19px; background: var(--green); color: white; font-weight: 800; }
.header-cta:hover, .inline-cta:hover { background: var(--green-dark); }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; color: var(--ink-soft); font-size: 13px; margin-bottom: 28px; }
.breadcrumbs a { text-decoration: underline; text-underline-offset: 3px; }
.breadcrumbs span[aria-hidden="true"] { color: #9aaba4; }
.article-hero, .archive-hero { padding: 68px 0 48px; background: linear-gradient(140deg, #eff6e9 0%, var(--cream) 58%, #fff0e5 100%); border-bottom: 1px solid var(--line); }
.article-hero h1, .archive-hero h1 { max-width: 850px; margin: 0; font-size: clamp(42px, 6vw, 72px); line-height: 1.02; letter-spacing: -.06em; }
.article-hero .lead, .archive-hero .lead { max-width: 760px; margin: 24px 0 0; font-size: 19px; line-height: 1.65; color: var(--ink-soft); }
.kicker { color: var(--green); text-transform: uppercase; font-size: 12px; font-weight: 850; letter-spacing: .12em; margin-bottom: 14px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 9px 18px; margin-top: 25px; color: var(--ink-soft); font-size: 13px; }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 730px) 260px; gap: 70px; align-items: start; padding: 64px 0 90px; }
.article-body { font-size: 17px; line-height: 1.78; }
.article-body h2 { margin: 52px 0 16px; font-size: 32px; line-height: 1.15; letter-spacing: -.035em; }
.article-body h3 { margin: 34px 0 10px; font-size: 22px; letter-spacing: -.025em; }
.article-body p { margin: 0 0 22px; }
.article-body ul, .article-body ol { margin: 0 0 26px; padding-left: 24px; }
.article-body li { margin: 10px 0; }
.article-body a { color: var(--green); text-decoration: underline; text-underline-offset: 3px; }
.summary-box, .notice-box, .example-box { border-radius: 20px; padding: 24px 26px; margin: 30px 0; }
.summary-box { background: var(--mint); }
.notice-box { background: #fff0e5; border-left: 5px solid var(--peach); }
.example-box { background: white; border: 1px solid var(--line); }
.summary-box h2, .notice-box h2, .example-box h2 { margin-top: 0; font-size: 23px; }
.summary-box :last-child, .notice-box :last-child, .example-box :last-child { margin-bottom: 0; }
.source-list { border-top: 1px solid var(--line); margin-top: 52px; padding-top: 28px; }
.source-list h2 { font-size: 24px; margin-top: 0; }
.source-list li { font-size: 14px; color: var(--ink-soft); }
.article-aside { position: sticky; top: 104px; }
.aside-card { background: white; border: 1px solid var(--line); border-radius: 20px; padding: 22px; margin-bottom: 16px; }
.aside-card h2 { margin: 0 0 14px; font-size: 16px; }
.aside-card ol, .aside-card ul { list-style: none; margin: 0; padding: 0; }
.aside-card li + li { border-top: 1px solid #edf1ed; }
.aside-card a { display: block; padding: 11px 0; color: var(--ink-soft); font-size: 13px; line-height: 1.4; }
.aside-card a:hover { color: var(--green); }
.aside-card a.inline-cta { display: inline-flex; padding: 12px 19px; color: white; line-height: 1.2; }
.aside-card a.inline-cta:hover { color: white; background: var(--green-dark); }
.aside-card p { margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.55; }
.archive-main { padding: 62px 0 94px; }
.guide-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.guide-card { display: flex; flex-direction: column; min-height: 290px; padding: 30px; border: 1px solid var(--line); border-radius: 25px; background: white; transition: transform .18s ease, box-shadow .18s ease; }
.guide-card:nth-child(2) { background: var(--mint); }
.guide-card:nth-child(3) { background: #fff0e5; }
.guide-card:nth-child(4) { background: #eff0ff; }
.guide-card:hover { transform: translateY(-4px); box-shadow: 0 18px 42px rgba(23,56,45,.1); }
.guide-card .tag { color: var(--green); font-size: 11px; text-transform: uppercase; font-weight: 850; letter-spacing: .1em; }
.guide-card h2 { margin: 42px 0 12px; font-size: 29px; line-height: 1.1; letter-spacing: -.04em; }
.guide-card p { margin: 0 0 26px; color: var(--ink-soft); font-size: 15px; line-height: 1.6; }
.guide-card .read-more { margin-top: auto; color: var(--green); font-size: 13px; font-weight: 850; }
.trust-block { margin-top: 56px; padding: 34px; background: var(--ink); color: white; border-radius: 28px; display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; }
.trust-block h2 { margin: 0 0 10px; font-size: 28px; }
.trust-block p { margin: 0; color: #c7d7d1; max-width: 680px; line-height: 1.6; }
.trust-block .inline-cta { background: var(--lime); color: var(--ink); }
.simple-page { width: min(760px, calc(100% - 40px)); margin: 0 auto; padding: 70px 0 100px; font-size: 17px; line-height: 1.75; }
.simple-page h1 { font-size: clamp(42px, 6vw, 65px); line-height: 1; letter-spacing: -.055em; margin: 22px 0 28px; }
.simple-page h2 { margin: 46px 0 12px; font-size: 29px; letter-spacing: -.035em; }
.simple-page p, .simple-page li { color: #355448; }
.simple-page a { color: var(--green); text-decoration: underline; text-underline-offset: 3px; }
.site-footer { background: #eef3e9; border-top: 1px solid var(--line); padding: 48px 0 28px; }
.footer-top { display: flex; justify-content: space-between; gap: 36px; align-items: flex-start; }
.footer-intro { max-width: 410px; }
.footer-intro p { color: var(--ink-soft); font-size: 13px; line-height: 1.55; }
.footer-links { display: flex; flex-wrap: wrap; gap: 16px 25px; color: var(--ink-soft); font-size: 13px; font-weight: 700; }
.footer-bottom { border-top: 1px solid #d3dfd4; margin-top: 36px; padding-top: 22px; display: flex; justify-content: space-between; gap: 26px; color: #71837b; font-size: 11px; line-height: 1.5; }
.footer-bottom p { margin: 0; max-width: 720px; }

@media (max-width: 850px) {
  .site-nav { display: none; }
  .article-layout { grid-template-columns: 1fr; gap: 30px; }
  .article-aside { position: static; }
  .article-aside .aside-card:first-child { display: none; }
}

@media (max-width: 640px) {
  .header-inner, .page-width { width: min(100% - 28px, 1120px); }
  .header-cta { font-size: 12px; padding: 10px 14px; }
  .brand { font-size: 18px; }
  .brand-mark { width: 31px; height: 31px; }
  .article-hero, .archive-hero { padding: 46px 0 38px; }
  .article-hero .lead, .archive-hero .lead { font-size: 17px; }
  .article-layout { padding: 42px 0 68px; }
  .article-body { font-size: 16px; }
  .article-body h2 { font-size: 28px; }
  .guide-grid { grid-template-columns: 1fr; }
  .guide-card { min-height: 250px; }
  .trust-block { grid-template-columns: 1fr; padding: 28px; }
  .footer-top, .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: .01ms !important; }
}