:root {
  --ink: #19312f;
  --muted: #5c6d69;
  --paper: #f4eee5;
  --paper-deep: #e7ddcf;
  --card: #fffaf2;
  --clay: #b96249;
  --clay-dark: #874332;
  --teal: #1c6963;
  --teal-dark: #104944;
  --line: #cfc4b5;
  --sun: #dfaa55;
  --white: #ffffff;
  --shadow: 0 18px 50px rgba(25, 49, 47, .12);
  --radius: 22px;
  --measure: 72rem;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--paper); }
body {
  margin: 0;
  min-width: 0;
  overflow-x: clip;
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent 0 5.8rem, rgba(185, 98, 73, .08) 5.8rem 5.9rem, transparent 5.9rem),
    repeating-linear-gradient(0deg, rgba(25, 49, 47, .026) 0 1px, transparent 1px 27px),
    var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.72;
}
a { color: var(--teal-dark); text-underline-offset: .2em; }
a:hover { color: var(--clay-dark); }
img { display: block; max-width: 100%; height: auto; }
button, input, textarea { font: inherit; }
button, .button { min-height: 44px; }
.skip-link { position: fixed; z-index: 100; left: 1rem; top: -8rem; padding: .7rem 1rem; background: var(--ink); color: white; border-radius: 8px; }
.skip-link:focus { top: 1rem; }
.site-header { position: sticky; z-index: 30; top: 0; border-bottom: 1px solid rgba(25, 49, 47, .16); background: rgba(244, 238, 229, .96); backdrop-filter: blur(14px); }
.nav-shell { width: min(calc(100% - 2rem), var(--measure)); margin: 0 auto; min-height: 74px; display: flex; align-items: center; gap: 1.2rem; }
.brand { display: inline-flex; align-items: center; gap: .7rem; color: var(--ink); font-weight: 800; text-decoration: none; letter-spacing: .02em; white-space: nowrap; }
.brand-mark { width: 2.1rem; height: 2.1rem; border-radius: 50% 48% 45% 52%; background: var(--clay); box-shadow: inset -.55rem -.3rem 0 var(--teal); }
.desktop-nav { display: flex; gap: .85rem; margin-left: auto; flex-wrap: wrap; justify-content: flex-end; }
.desktop-nav a { color: var(--ink); font-size: .9rem; font-weight: 650; text-decoration: none; padding: .4rem .25rem; border-bottom: 2px solid transparent; }
.desktop-nav a:hover { border-color: var(--clay); }
.menu-button { display: none; margin-left: auto; align-items: center; gap: .45rem; padding: .55rem .8rem; border: 1px solid var(--line); border-radius: 999px; color: var(--ink); background: var(--card); cursor: pointer; }
.mobile-drawer { display: none; border-top: 1px solid var(--line); background: var(--card); }
.mobile-drawer[hidden] { display: none; }
.mobile-drawer nav { width: min(calc(100% - 2rem), var(--measure)); margin: 0 auto; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .55rem; padding: 1rem 0 1.25rem; }
.mobile-drawer a { padding: .68rem .8rem; border: 1px solid var(--line); border-radius: 12px; text-decoration: none; background: #fffdf8; }
main { min-height: 62vh; }
.hero { width: min(calc(100% - 2rem), var(--measure)); margin: 2rem auto 1.5rem; display: grid; grid-template-columns: minmax(0, 1.14fr) minmax(20rem, .86fr); gap: clamp(1.5rem, 4vw, 4.5rem); align-items: center; }
.hero-copy { padding: clamp(1.5rem, 3vw, 3rem) 0; }
.eyebrow { display: inline-flex; align-items: center; gap: .45rem; margin: 0 0 .8rem; color: var(--clay-dark); font-size: .8rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 1.9rem; height: 2px; background: var(--clay); }
h1, h2, h3 { line-height: 1.18; text-wrap: balance; }
h1 { max-width: 14ch; margin: 0; font-family: Georgia, "Songti SC", "STSong", serif; font-size: clamp(2.5rem, 7vw, 5.8rem); letter-spacing: -.045em; }
.inner-hero h1 { max-width: 18ch; font-size: clamp(2.25rem, 5vw, 4.45rem); }
.lead { max-width: 43rem; margin: 1.2rem 0 0; color: #324b48; font-size: clamp(1.04rem, 1.7vw, 1.25rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 1.6rem; }
.button { display: inline-flex; align-items: center; justify-content: center; padding: .68rem 1rem; border: 1px solid var(--teal-dark); border-radius: 999px; color: white; background: var(--teal); font-weight: 750; text-decoration: none; }
.button.secondary { color: var(--ink); background: transparent; border-color: var(--line); }
.layered-panels { position: relative; min-height: 29rem; isolation: isolate; }
.panel { position: absolute; border: 1px solid rgba(25, 49, 47, .2); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.panel.back { inset: 2.8rem 2.7rem 2rem .6rem; transform: rotate(-5deg); background: var(--clay); }
.panel.middle { inset: .8rem .6rem 4.1rem 2.8rem; transform: rotate(4deg); background: var(--teal); }
.panel.front { inset: 3rem 1.5rem 1rem 1.5rem; padding: 1rem; background: var(--card); display: flex; flex-direction: column; justify-content: space-between; }
.panel.front img { width: 100%; border-radius: 15px; border: 1px solid var(--line); background: var(--paper-deep); }
.panel-note { display: flex; align-items: center; justify-content: space-between; gap: .8rem; padding-top: .85rem; font-size: .88rem; }
.status-chip { display: inline-flex; align-items: center; gap: .35rem; padding: .3rem .55rem; border-radius: 999px; background: #e5f0ed; color: var(--teal-dark); font-weight: 750; }
.status-chip::before { content: ""; width: .48rem; height: .48rem; border-radius: 50%; background: var(--teal); }
.section { width: min(calc(100% - 2rem), var(--measure)); margin: clamp(3rem, 7vw, 6rem) auto; }
.section-heading { display: grid; grid-template-columns: minmax(0, .75fr) minmax(18rem, 1.25fr); gap: 2rem; align-items: end; margin-bottom: 1.5rem; }
.section-heading h2 { margin: 0; font-family: Georgia, "Songti SC", "STSong", serif; font-size: clamp(1.9rem, 4vw, 3.25rem); }
.section-heading p { margin: 0; color: var(--muted); }
.editorial-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.tile { min-width: 0; padding: 1.25rem; border: 1px solid var(--line); border-radius: 18px; background: rgba(255, 250, 242, .92); box-shadow: 0 8px 24px rgba(25, 49, 47, .07); display: flex; flex-direction: column; }
.tile:nth-child(3n+2) { transform: translateY(1rem); }
.tile .kicker { color: var(--clay-dark); font-size: .77rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.tile h3, .tile h2 { margin: .65rem 0 .55rem; font-size: 1.25rem; }
.tile p { color: var(--muted); margin: 0 0 1rem; }
.tile a { margin-top: auto; font-weight: 750; }
.research-strip { display: grid; grid-template-columns: minmax(0, 1fr) minmax(17rem, .72fr); gap: 1.5rem; padding: clamp(1.3rem, 3vw, 2.4rem); border: 1px solid var(--line); border-radius: var(--radius); background: var(--ink); color: #f7f0e5; }
.research-strip p { color: #d9e1de; }
.research-strip img { width: 100%; border-radius: 16px; background: #eadfce; }
.pill-list { display: flex; flex-wrap: wrap; gap: .55rem; padding: 0; list-style: none; }
.pill-list a { display: inline-flex; padding: .45rem .72rem; border: 1px solid var(--line); border-radius: 999px; background: var(--card); text-decoration: none; }
.breadcrumbs { width: min(calc(100% - 2rem), var(--measure)); margin: 1.1rem auto 0; font-size: .87rem; color: var(--muted); }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: .5rem; padding: 0; list-style: none; }
.breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: .5rem; color: var(--line); }
.content-layout { width: min(calc(100% - 2rem), var(--measure)); margin: 2.2rem auto 5rem; display: grid; grid-template-columns: minmax(0, 1fr) 18rem; gap: 2.5rem; align-items: start; }
.prose { min-width: 0; }
.prose > section { margin: 0 0 2.6rem; }
.prose h2 { margin: 0 0 .8rem; font-family: Georgia, "Songti SC", "STSong", serif; font-size: clamp(1.65rem, 3vw, 2.45rem); }
.prose h3 { margin: 1.35rem 0 .45rem; font-size: 1.1rem; }
.prose p { font-size: 1.04rem; }
.prose .callout { padding: 1.1rem 1.2rem; border-left: 4px solid var(--clay); border-radius: 0 14px 14px 0; background: #efe4d5; }
.side-notes { position: sticky; top: 96px; display: grid; gap: .9rem; }
.note-card { padding: 1rem; border: 1px solid var(--line); border-radius: 15px; background: var(--card); }
.note-card h2 { margin: 0 0 .6rem; font-size: 1rem; }
.note-card p, .note-card li { color: var(--muted); font-size: .9rem; }
.note-card ul { margin: 0; padding-left: 1.15rem; }
.meta-line { display: flex; flex-wrap: wrap; gap: .65rem 1.1rem; margin-top: 1.2rem; color: var(--muted); font-size: .88rem; }
.artifact { margin: 2.2rem 0; padding: .9rem; border: 1px solid var(--line); border-radius: 18px; background: var(--card); }
.artifact img { width: 100%; border-radius: 12px; }
.artifact figcaption { margin-top: .7rem; color: var(--muted); font-size: .86rem; }
.steps { counter-reset: steps; padding: 0; list-style: none; display: grid; gap: .8rem; }
.steps li { counter-increment: steps; position: relative; padding: 1rem 1rem 1rem 3.5rem; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
.steps li::before { content: counter(steps, decimal-leading-zero); position: absolute; left: 1rem; color: var(--clay-dark); font-weight: 850; }
.tool-panel { padding: 1.25rem; border: 1px solid var(--line); border-radius: 18px; background: var(--card); }
.tool-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .8rem; }
.field { display: grid; gap: .35rem; }
.field label { font-weight: 720; }
.field input, .field textarea { width: 100%; min-width: 0; padding: .7rem .78rem; border: 1px solid var(--line); border-radius: 10px; color: var(--ink); background: #fffefb; }
.field textarea { min-height: 8rem; resize: vertical; }
.tool-output { margin-top: 1rem; padding: 1rem; border-radius: 12px; background: #e6efec; white-space: pre-wrap; }
.checklist { display: grid; gap: .65rem; }
.checklist label { display: flex; gap: .7rem; align-items: flex-start; padding: .75rem; border: 1px solid var(--line); border-radius: 12px; background: #fffefb; }
.checklist input { width: 1.2rem; height: 1.2rem; margin-top: .2rem; }
.risk-filters { display: flex; flex-wrap: wrap; gap: .55rem; margin-bottom: 1rem; }
.risk-filters button { padding: .55rem .75rem; border: 1px solid var(--line); border-radius: 999px; background: white; cursor: pointer; }
.risk-filters button[aria-pressed="true"] { color: white; background: var(--teal); border-color: var(--teal); }
.risk-item[hidden] { display: none; }
.page-index { columns: 2; column-gap: 2rem; }
.page-index li { break-inside: avoid; margin-bottom: .55rem; }
.faq details { border-top: 1px solid var(--line); padding: 1rem 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 780; }
.site-footer { border-top: 1px solid rgba(25, 49, 47, .2); background: #e7ddcf; }
.footer-grid { width: min(calc(100% - 2rem), var(--measure)); margin: 0 auto; padding: 2.5rem 0; display: grid; grid-template-columns: 1.15fr .85fr; gap: 2rem; }
.footer-grid h2 { margin: 0 0 .7rem; font-size: 1.1rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: .55rem 1rem; }
.footer-links a { font-size: .9rem; }
.footer-note { color: var(--muted); font-size: .9rem; }
@media (max-width: 960px) {
  .desktop-nav { display: none; }
  .menu-button { display: inline-flex; }
  .mobile-drawer:not([hidden]) { display: block; }
  .hero { grid-template-columns: 1fr; }
  .layered-panels { min-height: 25rem; width: min(100%, 36rem); margin: 0 auto; }
  .editorial-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tile:nth-child(3n+2) { transform: none; }
  .content-layout { grid-template-columns: minmax(0, 1fr); }
  .side-notes { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  body { background: repeating-linear-gradient(0deg, rgba(25, 49, 47, .026) 0 1px, transparent 1px 27px), var(--paper); }
  .nav-shell { min-height: 66px; }
  .brand { font-size: .94rem; }
  .hero { margin-top: .8rem; }
  .hero-copy { padding-bottom: .5rem; }
  .layered-panels { min-height: 21rem; }
  .panel.front { inset: 2.4rem .8rem .6rem .8rem; }
  .panel.middle { inset: .9rem .2rem 3rem 1.6rem; }
  .panel.back { inset: 2.2rem 1.8rem 1.3rem .2rem; }
  .section-heading { grid-template-columns: 1fr; gap: .75rem; }
  .editorial-grid, .research-strip, .side-notes, .footer-grid, .tool-grid { grid-template-columns: 1fr; }
  .page-index { columns: 1; }
  .footer-grid { gap: 1rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}