:root {
  --forest: #173f36;
  --forest-2: #285f52;
  --lilac: #bca8d4;
  --lilac-soft: #eee8f5;
  --mist: #f5f7f1;
  --paper: #fffdf8;
  --ink: #17221f;
  --muted: #52645e;
  --line: #cdd8d2;
  --gold: #d6a84f;
  --shadow: 0 18px 48px rgba(23, 63, 54, .12);
  --radius: 24px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--mist);
  color: var(--ink);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.72;
  overflow-x: hidden;
}
a { color: var(--forest-2); text-underline-offset: .2em; overflow-wrap: anywhere; }
a:hover { color: #0f2f28; }
img { display: block; max-width: 100%; height: auto; }
button, input { font: inherit; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 99; background: #fff; padding: .7rem 1rem; border-radius: 12px; }
.skip-link:focus { top: 1rem; }
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(245, 247, 241, .94); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.header-row, .site-nav, main, .site-footer { width: min(1180px, calc(100% - 32px)); margin-inline: auto; }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: .75rem; padding: 13px 0 9px; }
.brand { display: inline-flex; min-width: 0; align-items: center; gap: .65rem; color: var(--ink); font-weight: 850; text-decoration: none; letter-spacing: .02em; }
.brand span { flex: 0 0 auto; display: grid; place-items: center; width: 2.25rem; height: 2.25rem; border-radius: 50% 50% 18% 50%; background: var(--forest); color: #fff; font-size: .78rem; }
.nav-toggle { display: none; flex: 0 0 auto; border: 1px solid var(--forest); background: transparent; color: var(--forest); border-radius: 999px; padding: .48rem .8rem; font-weight: 700; }
.site-nav { display: flex; gap: .55rem; padding: 0 0 11px; flex-wrap: wrap; }
.site-nav a { display: inline-flex; padding: .45rem .82rem; border: 1px solid var(--line); border-radius: 999px; text-decoration: none; color: var(--forest); background: #fff; font-size: .91rem; font-weight: 700; }
.site-nav a:hover { background: var(--lilac-soft); border-color: var(--lilac); }
main { padding: 34px 0 70px; }
.hero, .page-hero, .article-header, .author-profile, .policy-page > header, .not-found { border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.split-feature { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(280px, .65fr); min-height: 510px; background: var(--forest); color: #fff; }
.hero-copy { min-width: 0; padding: clamp(2rem, 5vw, 5rem); display: flex; flex-direction: column; justify-content: center; }
.eyebrow { margin: 0 0 .55rem; text-transform: uppercase; letter-spacing: .12em; font-size: .76rem; font-weight: 850; color: var(--forest-2); }
.hero .eyebrow, .hero-index .eyebrow { color: #d9cced; }
h1, h2, h3, p, li, dd { overflow-wrap: anywhere; }
h1, h2, h3 { line-height: 1.18; margin-top: 0; }
h1 { font-size: clamp(2.55rem, 8vw, 6.7rem); letter-spacing: -.06em; margin-bottom: 1.2rem; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.7rem); letter-spacing: -.035em; }
h3 { font-size: 1.16rem; }
.hero-lead { font-size: clamp(1.03rem, 2.1vw, 1.28rem); max-width: 47rem; }
.hero-actions { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 1.4rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: .65rem 1rem; border-radius: 999px; text-decoration: none; font-weight: 800; border: 1px solid transparent; cursor: pointer; }
.primary { background: var(--gold); color: #19261e; }
.secondary { background: #fff; color: var(--forest); border-color: var(--line); }
.hero-index { min-width: 0; padding: clamp(1.5rem, 4vw, 3rem); background: linear-gradient(145deg, var(--lilac), #d9cce8); color: #1d2930; display: flex; flex-direction: column; justify-content: flex-end; }
.index-number { font-size: clamp(5rem, 10vw, 9rem); line-height: .85; margin: 0; color: rgba(23, 63, 54, .2); font-weight: 900; }
.status-line { display: flex; justify-content: space-between; gap: 1rem; padding-top: 1rem; border-top: 1px solid rgba(23, 63, 54, .25); }
.status-line strong { color: #703f19; }
.intro-band, .section-block, .faq, .source-note, .channel-method, .practice-box, .tag-scope, .relation-map, .method-timeline, .checklist-tool, .tool-explainer, .article-layout, .policy-page { margin-top: 28px; padding: clamp(1.35rem, 4vw, 3rem); border-radius: var(--radius); background: var(--paper); border: 1px solid var(--line); }
.principle-grid, .card-grid, .directory-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.principle-grid p { margin: 0; padding: 1.2rem; border-left: 4px solid var(--lilac); background: var(--lilac-soft); border-radius: 0 16px 16px 0; }
.principle-grid strong { display: block; color: var(--forest); margin-bottom: .35rem; }
.lilac { background: var(--lilac-soft); }
.soft-card { min-width: 0; padding: 1.3rem; border-radius: 18px; background: #fff; border: 1px solid var(--line); box-shadow: 0 8px 24px rgba(23, 63, 54, .07); }
.soft-card h3 a { text-decoration: none; color: var(--ink); }
.soft-card p { color: var(--muted); }
.text-link { font-weight: 800; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: .65rem; }
.tag { padding: .5rem .85rem; border-radius: 999px; background: var(--lilac-soft); border: 1px solid var(--lilac); text-decoration: none; }
.faq details { border-top: 1px solid var(--line); padding: 1rem 0; }
.faq summary { cursor: pointer; font-weight: 800; color: var(--forest); }
.directory-group { min-width: 0; background: var(--mist); border-radius: 18px; padding: 1rem; }
.directory-group ul { padding-left: 1.1rem; margin-bottom: 0; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: .55rem; margin: 0 0 1rem; color: var(--muted); font-size: .9rem; }
.page-hero, .article-header, .policy-page > header, .not-found { padding: clamp(2rem, 5vw, 4.6rem); background: linear-gradient(135deg, var(--forest), var(--forest-2)); color: #fff; }
.page-hero .eyebrow, .article-header .eyebrow, .policy-page > header .eyebrow, .not-found .eyebrow { color: #dfd1ee; }
.page-hero h1, .article-header h1, .policy-page h1, .not-found h1 { font-size: clamp(2.4rem, 6vw, 5rem); }
.channel-method, .tag-scope, .tool-explainer { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, .7fr); gap: 2rem; }
.method-panel, .tag-scope aside, .tool-explainer aside { min-width: 0; padding: 1.3rem; border-radius: 18px; background: var(--lilac-soft); }
.practice-box ol, .relation-map ol { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .85rem; list-style-position: inside; padding: 0; }
.practice-box li, .relation-map li { min-width: 0; padding: 1rem; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.article-layout { display: grid; grid-template-columns: minmax(280px, .75fr) minmax(0, 1.25fr); gap: 2rem; }
.article-header { align-self: start; position: sticky; top: 140px; }
.article-header h1 { font-size: clamp(2rem, 4.5vw, 3.6rem); }
.evidence-line { margin: 1.5rem 0 0; }
.evidence-line div { padding: .8rem 0; border-top: 1px solid rgba(255, 255, 255, .25); }
.evidence-line dt { font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; color: #d9cce8; }
.evidence-line dd { margin: 0; }
.article-body { min-width: 0; }
.article-body section { padding-bottom: 1.4rem; margin-bottom: 1.4rem; border-bottom: 1px solid var(--line); }
.key-answer { padding: 1.2rem !important; background: var(--lilac-soft); border-radius: 18px; }
.check-list { padding-left: 1.25rem; }
.check-list li { margin: .7rem 0; }
.author-profile { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 1.5rem; align-items: center; padding: clamp(2rem, 5vw, 4rem); background: var(--forest); color: #fff; }
.author-profile .eyebrow { color: #d9cce8; }
.author-profile h1 { font-size: clamp(2.2rem, 5vw, 4.8rem); }
.author-mark { display: grid; place-items: center; width: 110px; height: 110px; border-radius: 36% 64% 55% 45%; background: var(--lilac); color: var(--forest); font-size: 3rem; font-weight: 900; }
.method-timeline ol { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.method-timeline li { min-width: 0; padding: 1rem; border-top: 3px solid var(--forest); background: var(--mist); }
.method-timeline li span { font-weight: 900; color: var(--lilac); }
.demo-label { display: inline-block; padding: .7rem 1rem; border-radius: 12px; background: #fff4d5; color: #553b04; }
.tool-heading { display: flex; align-items: end; justify-content: space-between; gap: 1rem; }
.progress { padding: .6rem 1rem; border-radius: 999px; background: var(--lilac-soft); white-space: nowrap; }
.check-items { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .8rem; margin: 1rem 0; }
.check-item { min-width: 0; display: flex; align-items: flex-start; gap: .8rem; padding: 1rem; border: 1px solid var(--line); border-radius: 16px; background: #fff; cursor: pointer; }
.check-item input { flex: 0 0 auto; width: 1.2rem; height: 1.2rem; margin-top: .2rem; accent-color: var(--forest); }
.check-item strong { display: block; }
.policy-page { padding: 0; overflow: hidden; }
.policy-body { padding: clamp(1.35rem, 4vw, 3rem); }
.policy-body section { max-width: 800px; margin-bottom: 2rem; }
.error-code { font-size: clamp(5rem, 15vw, 11rem); line-height: .8; margin: 0; color: rgba(255, 255, 255, .18); font-weight: 900; }
.source-note { display: grid; grid-template-columns: minmax(0, .6fr) minmax(0, 1.2fr) minmax(0, .7fr); align-items: center; gap: 1.5rem; background: #e7eee8; }
.source-note > * { min-width: 0; }
.source-note img { width: 100%; max-width: 440px; border-radius: 18px; }
.related { margin-top: 28px; }
.site-footer { padding: 38px 0 50px; border-top: 1px solid var(--line); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .7fr); gap: 1.5rem; }
.site-footer nav { min-width: 0; display: flex; align-content: flex-start; flex-wrap: wrap; gap: .55rem; }
.site-footer nav a { padding: .42rem .7rem; border-radius: 999px; background: #fff; border: 1px solid var(--line); text-decoration: none; }
.fine-print { grid-column: 1 / -1; color: var(--muted); font-size: .88rem; }
@media (max-width: 900px) {
  .split-feature, .article-layout, .source-note { grid-template-columns: minmax(0, 1fr); }
  .article-header { position: static; }
  .principle-grid, .card-grid, .directory-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-footer { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .header-row, .site-nav, main, .site-footer { width: min(1180px, calc(100% - 22px)); }
  .nav-toggle { display: inline-flex; }
  .js .site-nav[data-open="false"] { display: none; }
  .site-nav { padding-top: .25rem; }
  .site-nav a { flex: 1 1 42%; justify-content: center; }
  .split-feature { grid-template-columns: minmax(0, 1fr); min-height: 0; }
  .hero-copy, .hero-index { padding: 1.35rem; }
  .hero-index { min-height: 260px; }
  .principle-grid, .card-grid, .directory-grid, .channel-method, .tag-scope, .tool-explainer, .practice-box ol, .relation-map ol, .method-timeline ol, .check-items { grid-template-columns: minmax(0, 1fr); }
  .section-block, .intro-band, .faq, .source-note, .channel-method, .practice-box, .tag-scope, .relation-map, .method-timeline, .checklist-tool, .tool-explainer, .article-layout, .policy-page { padding: 1rem; }
  .page-hero, .article-header, .policy-page > header, .not-found { padding: 1.4rem; }
  .author-profile { grid-template-columns: minmax(0, 1fr); padding: 1.4rem; }
  .author-mark { width: 78px; height: 78px; font-size: 2rem; }
  .tool-heading { align-items: start; flex-direction: column; }
  .button { width: 100%; }
  .hero-actions { width: 100%; }
  .status-line { flex-direction: column; }
  .source-note { gap: .8rem; }
}