:root {
  --ink: #141B26;
  --muted: #5F6875;
  --rule: #DDE1E6;
  --soft: #F5F6F8;
  --acc: #D9481C;
  --acc-dark: #B53A14;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --wrap: 1160px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: #fff;
  font-feature-settings: "tnum" 1;
}
a { color: var(--ink); text-decoration-color: var(--acc); text-underline-offset: 3px; }
a:hover { color: var(--acc); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }
h1 { font-family: var(--serif); font-weight: 600; font-size: clamp(2.3rem, 5vw, 3.6rem); letter-spacing: -0.01em; max-width: 18ch; }
h2 { font-family: var(--serif); font-weight: 600; font-size: clamp(1.5rem, 2.6vw, 2rem); }
h3 { font-size: 1.08rem; font-weight: 650; }
p { margin: 0 0 1em; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }

/* header */
.top { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.94); backdrop-filter: saturate(1.4) blur(8px); border-bottom: 1px solid var(--rule); }
.top-in { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 66px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.15rem; letter-spacing: -0.01em; text-decoration: none; color: var(--ink); }
.mark { width: 20px; height: 20px; border-radius: 4px; background: linear-gradient(90deg, var(--acc) 0 45%, transparent 45% 55%, var(--ink) 55%); }
.nav { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; font-size: .95rem; }
.nav a { text-decoration: none; color: var(--muted); }
.nav a:hover, .nav a[aria-current] { color: var(--ink); }
.nav a[aria-current] { box-shadow: inset 0 -2px 0 var(--acc); }

/* buttons */
.btn { display: inline-block; background: var(--acc); color: #fff !important; text-decoration: none; font-weight: 600; padding: 12px 22px; border-radius: 6px; border: 1px solid var(--acc); }
.btn:hover { background: var(--acc-dark); border-color: var(--acc-dark); }
.btn-sm { padding: 7px 14px; font-size: .9rem; }
.btn-ghost { background: transparent; color: var(--ink) !important; border-color: var(--rule); }
.btn-ghost:hover { background: var(--soft); border-color: var(--muted); }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }

/* hero and page heads */
.hero { padding: 88px 0 36px; }
.page-head { padding: 64px 28px 12px; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .8rem; font-weight: 650; color: var(--acc); margin-bottom: 14px; }
.eyebrow a { color: var(--acc); text-decoration: none; }
.lead { font-size: 1.22rem; color: var(--muted); max-width: 46em; }
.lead-sm { color: var(--muted); max-width: 52em; }

/* sections */
.section { padding: 56px 28px 8px; }
.figure-block { padding-top: 28px; padding-bottom: 12px; }
.figure-block h2 { margin-top: 28px; }
.scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.chart { width: 100%; min-width: 720px; height: auto; display: block; }
.caption { color: var(--muted); font-size: .92rem; max-width: 60em; margin-top: 10px; }
.key { display: inline-block; width: 12px; height: 12px; border-radius: 2px; background: var(--c); margin: 0 6px 0 2px; vertical-align: -1px; }
.key + .key, .caption .key:not(:first-child) { margin-left: 14px; }

/* cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { display: flex; flex-direction: column; background: var(--soft); border: 1px solid var(--rule); border-radius: 10px; padding: 26px 24px 22px; text-decoration: none; color: var(--ink); transition: border-color .15s, transform .15s; }
.card:hover { border-color: var(--acc); transform: translateY(-2px); color: var(--ink); }
.card .num { font-family: var(--serif); font-size: 2rem; font-weight: 600; color: var(--acc); margin-bottom: 14px; }
.card p { color: var(--muted); flex: 1; }
.card .more { font-weight: 600; font-size: .95rem; }
.card .more::after { content: " →"; color: var(--acc); }

.three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 34px; }
.three > div { border-top: 3px solid var(--ink); padding-top: 16px; }
.three p { color: var(--muted); }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; counter-reset: s; }
.steps li { counter-increment: s; border-top: 1px solid var(--rule); padding-top: 16px; }
.steps li::before { content: "0" counter(s); display: block; font-family: var(--serif); font-size: 1.5rem; color: var(--acc); margin-bottom: 8px; }
.steps p { color: var(--muted); font-size: .97rem; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.stats .big { display: block; font-family: var(--serif); font-size: clamp(2rem, 3.4vw, 2.7rem); font-weight: 600; color: var(--acc); line-height: 1.1; margin-bottom: 8px; }
.stats p { color: var(--muted); font-size: .97rem; }
.more-link a { font-weight: 600; }
.more-link a::after { content: " →"; color: var(--acc); }

.two { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.prose { max-width: 44em; }
.prose h2 { margin-top: 1.4em; font-size: 1.45rem; }
.prose h2:first-child { margin-top: 0; }
.prose p { color: #2C3440; }
.plain { margin: 0; padding-left: 1.1em; }
.plain li { margin-bottom: .55em; color: #2C3440; }
.plain li::marker { color: var(--acc); }

/* facts */
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 0; margin: 18px 0 0; border-top: 1px solid var(--rule); }
.facts > div { padding: 14px 18px 14px 0; border-bottom: 1px solid var(--rule); }
.facts dt { font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); font-weight: 650; margin-bottom: 4px; }
.facts dd { margin: 0; font-size: .98rem; }
.two .facts { grid-template-columns: 1fr; }
.two .facts > div { display: grid; grid-template-columns: 11em 1fr; gap: 12px; padding: 10px 0; }
.two .facts dt { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; text-transform: none; letter-spacing: 0; font-size: .86rem; color: var(--ink); margin: 0; }
.two .facts dd { color: var(--muted); }

/* tables */
table.data { width: 100%; border-collapse: collapse; font-size: .95rem; min-width: 760px; }
table.data.narrow { min-width: 560px; }
.data th { text-align: left; font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); font-weight: 650; padding: 10px 14px 10px 0; border-bottom: 2px solid var(--ink); }
.data td { padding: 12px 14px 12px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
.data tr:hover td { background: #FAFBFC; }
.nowrap { white-space: nowrap; }
.num-cell { text-align: right; padding-right: 28px !important; }
.tag { display: inline-block; white-space: nowrap; font-size: .8rem; font-weight: 600; padding: 2px 9px; border-radius: 999px; color: var(--c); border: 1px solid var(--c); }

/* band and footer */
.band { margin-top: 72px; background: var(--ink); color: #fff; }
.band-in { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 48px 28px; flex-wrap: wrap; }
.band h2 { color: #fff; margin-bottom: .3em; }
.band p { color: #C9CED6; margin: 0; max-width: 40em; }
.foot { border-top: 1px solid var(--rule); padding: 40px 0 28px; font-size: .92rem; color: var(--muted); }
.band + .foot, main:has(> .band:last-child) + .foot { border-top: 0; }
.foot-in { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.brand-foot { font-size: 1rem; margin-bottom: 8px; }
.foot-links { display: flex; gap: 18px; flex-wrap: wrap; align-items: flex-start; }
.foot-links a { color: var(--muted); text-decoration: none; }
.foot-links a:hover { color: var(--ink); }
.fine { margin-top: 26px; font-size: .82rem; color: #8A929D; }
.contact { font-size: 1.1rem; }
.zh { color: var(--muted); font-size: .88rem; }

@media (max-width: 900px) {
  .cards, .three, .two { grid-template-columns: 1fr; }
  .steps, .stats { grid-template-columns: 1fr 1fr; }
  .hero { padding-top: 56px; }
  .nav { gap: 14px; font-size: .9rem; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .wrap, .section, .page-head { padding-left: 20px; padding-right: 20px; }
  .steps, .stats { grid-template-columns: 1fr; }
  .two .facts > div { grid-template-columns: 1fr; gap: 2px; }
  .nav a:not(.btn) { display: none; }
  .top-in { flex-wrap: nowrap; }
}