@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=Syncopate:wght@400;700&display=swap');

:root {
  --teal: #5cc6b0;
  --teal-deep: #2b8776;
  --sand: #d4c4a8;
  --ink: #172623;
  --ink-soft: #33443e;
  --paper: #f4ede2;
  --paper-2: #e9dfcf;
  --clay: #c67b5c;
  --radius: 28px;
  --shadow: 0 22px 44px -26px rgba(23, 38, 35, .55);
  --font-head: 'Syncopate', 'Avenir Next', 'Trebuchet MS', system-ui, sans-serif;
  --font-mono: 'Space Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  --font-body: system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.78;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(23, 38, 35, .065) 1px, transparent 1px);
  background-size: 5px 5px;
  opacity: .7;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3 { margin: 0; font-family: var(--font-head); line-height: 1.32; }
p { margin: 0 0 16px; }

.ann {
  position: relative;
  z-index: 3;
  background: var(--ink);
  color: var(--sand);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .18em;
}
.ann p {
  margin: 0;
  padding: 8px clamp(14px, 4vw, 40px);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  text-align: center;
}
.ann-sep { color: var(--teal); }

.top {
  position: sticky;
  top: 0;
  z-index: 6;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px clamp(12px, 3vw, 30px);
  background: rgba(244, 237, 226, .93);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(23, 38, 35, .14);
}

.mark {
  flex: none;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  overflow: hidden;
  text-decoration: none;
  color: var(--teal);
  background: var(--ink);
  border-radius: 16px 21px 14px 23px;
  box-shadow: var(--shadow);
}
.mark-img { width: 100%; height: 100%; object-fit: cover; }
.mark-mono { font-family: var(--font-head); font-size: 18px; font-weight: 700; }

.nav { flex: 1; min-width: 0; }
.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.nav-list::-webkit-scrollbar { display: none; }
.nav-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 9px 11px;
  border-radius: 999px;
  font-size: 16px;
  white-space: nowrap;
  text-decoration: none;
  color: var(--ink-soft);
  transition: background .35s ease-out, color .35s ease-out;
}
.nav-list a:hover, .nav-list a:focus-visible { background: var(--sand); color: var(--ink); }
.ico {
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
}

.root { position: relative; z-index: 1; }

.hero {
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
  min-height: 70vh;
  margin: clamp(12px, 2vw, 20px) clamp(10px, 2vw, 20px) 0;
  padding: clamp(30px, 7vh, 62px) clamp(18px, 5vw, 48px) clamp(76px, 12vh, 120px);
  text-align: center;
  color: var(--sand);
  background: radial-gradient(120% 92% at 72% 10%, #2c6859 0%, #1d3a33 48%, var(--ink) 100%);
  border-radius: 0 0 999px 999px / 0 0 clamp(56px, 11vw, 118px) clamp(56px, 11vw, 118px);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(212, 196, 168, .3) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: .5;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(23, 38, 35, .04), rgba(23, 38, 35, .58));
}
.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .48;
  will-change: transform;
}
.hero-in { position: relative; z-index: 2; max-width: 760px; }
.kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .32em;
  color: var(--teal);
}
.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(1.9rem, 6vw, 3.5rem);
  font-weight: 700;
  letter-spacing: .01em;
  text-wrap: balance;
}
.lede {
  margin: 0 auto;
  max-width: 52ch;
  font-size: 16px;
  color: rgba(236, 226, 208, .9);
}

.deck {
  max-width: 1140px;
  margin: 0 auto;
  padding: clamp(28px, 5vw, 54px) clamp(16px, 4vw, 36px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 292px;
  gap: clamp(24px, 4vw, 54px);
  align-items: start;
}

.prose { min-width: 0; }
.prose > section {
  padding: 38px 0;
  border-top: 1px dashed rgba(23, 38, 35, .2);
  scroll-margin-top: 108px;
}
.prose > section:first-child { border-top: 0; padding-top: 4px; }
.prose small {
  display: block;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .24em;
  color: var(--teal-deep);
}
.prose h2 {
  font-size: clamp(1.32rem, 2.6vw, 1.86rem);
  margin: 0 0 14px;
}
.prose h3 {
  font-size: 1.1rem;
  margin: 22px 0 10px;
  color: var(--ink);
}
.prose p { color: var(--ink-soft); }
.prose a {
  color: var(--teal-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.prose ul, .prose ol { margin: 0 0 18px; padding-left: 1.25em; color: var(--ink-soft); }
.prose li { margin: 0 0 8px; }
.prose blockquote {
  margin: 0 0 18px;
  padding: 14px 18px;
  border-left: 3px solid var(--teal);
  border-radius: 0 18px 18px 0;
  background: rgba(212, 196, 168, .34);
  color: var(--ink);
}
.prose blockquote p:last-child { margin-bottom: 0; }
.prose img { border-radius: 24px 20px 26px 18px; box-shadow: var(--shadow); margin: 0 0 18px; }
.prose table { width: 100%; border-collapse: collapse; margin: 0 0 18px; font-size: 16px; }
.prose th, .prose td {
  padding: 10px 8px;
  text-align: left;
  border-bottom: 1px solid rgba(23, 38, 35, .16);
}
.prose strong { color: var(--ink); }

.side {
  position: sticky;
  top: 88px;
  display: grid;
  gap: 16px;
}
.side-card {
  padding: 20px 20px 16px;
  border: 1px solid rgba(23, 38, 35, .1);
  border-radius: var(--radius);
  background: linear-gradient(160deg, #f8f2e8, var(--paper-2));
  box-shadow: var(--shadow);
}
.eyebrow {
  display: block;
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .26em;
  color: var(--teal-deep);
}
.side-card h2 { font-size: 1.12rem; margin: 0 0 10px; }
.side-list { margin: 0; padding: 0; list-style: none; }
.side-list a {
  display: flex;
  align-items: center;
  min-height: 42px;
  padding: 8px 0;
  font-size: 16px;
  text-decoration: none;
  border-bottom: 1px dashed rgba(23, 38, 35, .2);
}
.side-list li:last-child a { border-bottom: 0; }
.side-list a:hover { color: var(--teal-deep); }
.side-note p {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .14em;
  color: var(--ink-soft);
}

.foot {
  position: relative;
  z-index: 2;
  margin-top: 60px;
  padding: 34px clamp(16px, 4vw, 44px) 22px;
  background: var(--ink);
  color: var(--sand);
  border-radius: clamp(28px, 5vw, 44px) clamp(28px, 5vw, 44px) 0 0;
}
.foot-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  max-width: 1140px;
  margin: 0 auto;
}
.foot dl { margin: 0; }
.foot dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .22em;
  color: var(--teal);
}
.foot dd { margin: 6px 0 0; font-size: 16px; color: rgba(236, 226, 208, .92); }
.foot-links { display: flex; flex-wrap: wrap; gap: 0 14px; }
.foot-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.foot-links a:hover { border-bottom-color: var(--teal); }
.foot-mark {
  max-width: 1140px;
  margin: 26px auto 10px;
  font-family: var(--font-head);
  font-size: clamp(2.3rem, 10.5vw, 5.6rem);
  line-height: 1;
  letter-spacing: .03em;
  color: rgba(212, 196, 168, .17);
  word-break: break-all;
}
.foot-base {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  max-width: 1140px;
  margin: 0 auto;
  padding-top: 14px;
  border-top: 1px solid rgba(212, 196, 168, .22);
  font-family: var(--font-mono);
  font-size: 14px;
}
.foot-base p { margin: 0; }
.foot-base a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  text-decoration: none;
  color: var(--teal);
}

.js .prose > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .7s ease-out, transform .7s ease-out;
}
.js .prose > .rv-in { opacity: 1; transform: none; }

a:focus-visible, .mark:focus-visible {
  outline: 2px solid var(--teal-deep);
  outline-offset: 3px;
}

@media (max-width: 940px) {
  .deck { grid-template-columns: minmax(0, 1fr); }
  .side { position: static; grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 700px) {
  body { font-size: 16px; }
  .hero { min-height: 66vh; }
  .foot-cols { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .foot { margin-top: 44px; }
  .prose > section { padding: 30px 0; scroll-margin-top: 96px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .prose > * { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

button[aria-expanded]{min-width:44px;min-height:44px}