/* =========================================================
   Asia Trade Intelligence — Stylesheet
   Design system: ink/paper editorial with a stamped-manifest
   signature. Serif for reading, monospace for data/sourcing.
   ========================================================= */

:root {
  --ink: #16191f;
  --ink-soft: #333a45;
  --paper: #f6f3ed;
  --paper-dim: #efe9dc;
  --rule: #d8d2c3;
  --rule-strong: #b9b1a0;
  --steel: #2b4570;
  --steel-deep: #1c2e4a;
  --meta: #6b6455;
  --brick: #7a2e18;

  --serif: Georgia, "Iowan Old Style", "Palatino Linotype", "URW Palladio L", Palatino, serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Consolas, "Liberation Mono", monospace;

  --content-width: 700px;
  --wide-width: 1040px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--steel-deep); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--steel); }

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--steel);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

.wrap {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 24px;
}

.col {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Eyebrow / mono utility text ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--meta);
}

.mono {
  font-family: var(--mono);
}

/* ---------- Masthead / Nav ---------- */
.masthead {
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 20;
}

.masthead-inner {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.brand-name .thin { font-weight: 400; color: var(--meta); font-size: 14px; margin-left: 2px; }

nav.primary-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

nav.primary-nav a {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

nav.primary-nav a:hover,
nav.primary-nav a[aria-current="page"] {
  color: var(--steel-deep);
  border-bottom-color: var(--steel);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--rule-strong);
  border-radius: 3px;
  width: 40px;
  height: 36px;
  cursor: pointer;
  padding: 0;
  position: relative;
}
.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  content: "";
  position: absolute;
  left: 9px;
  right: 9px;
  height: 2px;
  background: var(--ink);
}
.nav-toggle::before { top: 12px; }
.nav-toggle span { top: 17px; }
.nav-toggle::after { top: 22px; }

@media (max-width: 720px) {
  nav.primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 4px 24px 16px;
    display: none;
  }
  nav.primary-nav.open { display: flex; }
  nav.primary-nav a { width: 100%; padding: 10px 0; border-bottom: 1px solid var(--paper-dim); }
  .nav-toggle { display: block; }
}

/* ---------- Hero ---------- */
.hero {
  border-bottom: 1px solid var(--rule);
  padding: 72px 0 56px;
}

.hero .eyebrow { margin-bottom: 18px; }

.hero h1 {
  font-size: clamp(36px, 6vw, 58px);
  line-height: 1.05;
  letter-spacing: -0.015em;
  margin: 0 0 22px;
}

.hero .tagline {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(19px, 2.4vw, 23px);
  color: var(--ink-soft);
  max-width: 620px;
  margin: 0 0 28px;
  border-left: 3px solid var(--steel);
  padding-left: 18px;
}

.hero .lede {
  max-width: 620px;
  font-size: 18px;
  color: var(--ink-soft);
  margin: 0 0 28px;
}

.cadence-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--rule);
  border-radius: 2px;
  overflow: hidden;
  max-width: 640px;
}

.cadence-strip div {
  padding: 14px 16px;
  border-left: 1px solid var(--rule);
}
.cadence-strip div:first-child { border-left: none; }

.cadence-strip .day {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel-deep);
  display: block;
  margin-bottom: 4px;
}

.cadence-strip .what {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.4;
}

@media (max-width: 640px) {
  .cadence-strip { grid-template-columns: 1fr; }
  .cadence-strip div { border-left: none; border-top: 1px solid var(--rule); padding: 12px 14px; }
  .cadence-strip div:first-child { border-top: none; }
}

/* ---------- Sections ---------- */
section {
  padding: 56px 0;
  border-bottom: 1px solid var(--rule);
}
section:last-of-type { border-bottom: none; }

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.section-head h2 {
  font-size: 28px;
  margin: 0;
  letter-spacing: -0.01em;
}

.section-head .see-all {
  font-family: var(--mono);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

/* ---------- Subscribe ---------- */
.subscribe {
  background: var(--steel-deep);
  color: var(--paper);
  border-bottom: none;
}

.subscribe .wrap { max-width: var(--content-width); }

.subscribe h2 {
  color: #fff;
  font-size: 30px;
  margin: 0 0 10px;
}

.subscribe p {
  color: #cdd7e5;
  margin: 0 0 26px;
  font-size: 16.5px;
}

.subscribe-form {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.subscribe-form input[type="email"] {
  flex: 1 1 260px;
  padding: 13px 16px;
  border: 1px solid #3d557d;
  background: #21375a;
  color: #fff;
  border-radius: 2px;
  font-family: var(--serif);
  font-size: 16px;
}
.subscribe-form input[type="email"]::placeholder { color: #9aabc4; }

.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 13.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 14px 24px;
  border-radius: 2px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 120ms ease, color 120ms ease, border-color 120ms ease;
  white-space: nowrap;
}

.btn-primary {
  background: #fff;
  color: var(--steel-deep);
}
.btn-primary:hover { background: #e7ecf3; color: var(--steel-deep); }

.btn-outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--rule-strong);
}
.btn-outline:hover { border-color: var(--steel); color: var(--steel-deep); }

.subscribe-note {
  margin-top: 10px !important;
  font-size: 13px !important;
  color: #93a4bd !important;
}

/* ---------- Article card ---------- */
.article-card {
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 30px 32px;
  background: #fbfaf6;
}

.article-card .eyebrow { margin-bottom: 10px; }

.article-card h3 {
  font-size: 25px;
  line-height: 1.25;
  margin: 0 0 14px;
  letter-spacing: -0.01em;
}

.article-card p.excerpt {
  color: var(--ink-soft);
  margin: 0 0 20px;
}

.read-link {
  font-family: var(--mono);
  font-size: 13.5px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

/* ---------- Credibility strip ---------- */
.credibility {
  background: var(--paper-dim);
}

.credibility-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.credibility-grid .item {
  border-top: 2px solid var(--steel);
  padding-top: 16px;
}

.credibility-grid .num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--meta);
  display: block;
  margin-bottom: 10px;
}

.credibility-grid p {
  margin: 0;
  font-size: 17px;
  color: var(--ink-soft);
}

@media (max-width: 720px) {
  .credibility-grid { grid-template-columns: 1fr; gap: 24px; }
}

/* ---------- Closing CTA ---------- */
.closing-cta h2 {
  font-size: 30px;
  margin: 0 0 14px;
}
.closing-cta p {
  max-width: 620px;
  color: var(--ink-soft);
  margin: 0 0 26px;
}

/* ---------- Footer ---------- */
footer.site-footer {
  border-top: 1px solid var(--rule);
  padding: 44px 0 36px;
  background: var(--paper);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.footer-brand .brand-name { font-size: 18px; }
.footer-brand .loc {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--meta);
  margin-top: 8px;
}

.footer-contact,
.footer-links {
  font-size: 15px;
}

.footer-contact a, .footer-links a {
  color: var(--ink-soft);
  text-decoration: none;
  display: block;
  margin-bottom: 6px;
}
.footer-contact a:hover, .footer-links a:hover { color: var(--steel-deep); text-decoration: underline; }

.footer-legal {
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--meta);
}

/* ---------- Page header (interior pages) ---------- */
.page-header {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--rule);
}
.page-header h1 {
  font-size: clamp(32px, 5vw, 46px);
  margin: 14px 0 18px;
  letter-spacing: -0.01em;
}
.page-header .intro {
  max-width: 620px;
  color: var(--ink-soft);
  font-size: 18px;
  margin: 0 0 24px;
}

/* ---------- Research page: issue block ---------- */
.issue {
  padding: 48px 0;
  border-bottom: 1px solid var(--rule);
}
.issue:last-child { border-bottom: none; }

.issue-meta {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.issue-meta .stamp {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--steel);
  color: var(--steel-deep);
  padding: 3px 8px;
  border-radius: 2px;
}

.issue h3 {
  font-size: 27px;
  line-height: 1.28;
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}

.issue .body-text p {
  margin: 0 0 18px;
  color: var(--ink-soft);
}

.sources-block {
  margin-top: 24px;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  padding: 16px 18px;
  background: var(--paper-dim);
}

.sources-block .label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel-deep);
  display: block;
  margin-bottom: 6px;
}

.sources-block p {
  margin: 0;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
}

.issue-footnote {
  margin-top: 28px;
  font-size: 14.5px;
  color: var(--meta);
  border-left: 2px solid var(--rule-strong);
  padding-left: 16px;
}

/* ---------- About page ---------- */
.principles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.principle {
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 24px 26px;
  background: #fbfaf6;
}

.principle .num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--steel);
  display: block;
  margin-bottom: 10px;
}

.principle h3 {
  font-size: 19px;
  margin: 0 0 10px;
  letter-spacing: -0.005em;
}
.principle p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15.5px;
}

@media (max-width: 720px) {
  .principles { grid-template-columns: 1fr; }
}

.cadence-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.cadence-cols .col-item {
  border-top: 2px solid var(--steel);
  padding-top: 14px;
}
.cadence-cols .day {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--steel-deep);
  display: block;
  margin-bottom: 8px;
}
.cadence-cols p { margin: 0; color: var(--ink-soft); }

@media (max-width: 720px) {
  .cadence-cols { grid-template-columns: 1fr; gap: 20px; }
}

/* ---------- Contact page ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

@media (max-width: 860px) {
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}

.contact-card {
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 28px;
  background: #fbfaf6;
}

.contact-card h3 { margin: 0 0 6px; font-size: 20px; }
.contact-card .loc { font-family: var(--mono); font-size: 13px; color: var(--meta); margin-bottom: 18px; }

.contact-card dl { margin: 0; }
.contact-card dt {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--meta);
  margin-top: 14px;
}
.contact-card dt:first-child { margin-top: 0; }
.contact-card dd {
  margin: 4px 0 0;
  font-size: 16px;
}
.contact-card dd a { text-decoration: none; }
.contact-card dd a:hover { text-decoration: underline; }

.reasons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 860px) {
  .reasons { grid-template-columns: 1fr; }
}
.reason-card {
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 22px 24px;
  background: #fbfaf6;
}
.reason-card h3 { font-size: 18px; margin: 0 0 10px; }
.reason-card p { margin: 0; color: var(--ink-soft); font-size: 15px; }

/* ---------- Form ---------- */
.form-note {
  font-size: 14px;
  color: var(--meta);
  border-left: 2px solid var(--rule-strong);
  padding-left: 16px;
  margin: 0 0 28px;
}

form.contact-form {
  display: grid;
  gap: 20px;
  max-width: 560px;
}

.field label {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.field .required { color: var(--brick); }

.field input,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  background: #fff;
  font-family: var(--serif);
  font-size: 16px;
  color: var(--ink);
}

.field textarea { min-height: 140px; resize: vertical; }

.field input:invalid:not(:placeholder-shown),
.field textarea:invalid:not(:placeholder-shown) {
  border-color: var(--brick);
}

.field .error-msg {
  display: none;
  color: var(--brick);
  font-size: 13px;
  margin-top: 6px;
  font-family: var(--mono);
}
.field.has-error .error-msg { display: block; }
.field.has-error input,
.field.has-error textarea { border-color: var(--brick); }

.form-status {
  font-family: var(--mono);
  font-size: 14px;
  padding: 12px 14px;
  border-radius: 2px;
  display: none;
}
.form-status.visible { display: block; }
.form-status.success { background: #e5efe4; color: #2a5c26; border: 1px solid #b7d3b3; }
.form-status.info { background: var(--paper-dim); color: var(--ink-soft); border: 1px solid var(--rule-strong); }

/* ---------- Utility ---------- */
.mt-0 { margin-top: 0; }
.center { text-align: center; }

@media (max-width: 640px) {
  body { font-size: 17px; }
  section { padding: 44px 0; }
  .hero { padding: 52px 0 40px; }
  .article-card { padding: 24px 20px; }
}