/* =========================================================================
   China Trade Counsel — Site stylesheet
   Professional, responsive, SEO-friendly design system.
   ========================================================================= */

:root {
  --navy-900: #0b1c2c;
  --navy-800: #102a43;
  --navy-700: #16395b;
  --navy-600: #1e4a78;
  --gold-500: #b8862f;
  --gold-400: #c69a4a;
  --gold-300: #d8b87a;
  --cream: #f7f6f2;
  --ink: #1f2933;
  --ink-soft: #4a5568;
  --ink-mute: #718096;
  --line: #e4e7eb;
  --white: #ffffff;
  --shadow-sm: 0 1px 3px rgba(11, 28, 44, .08);
  --shadow-md: 0 8px 24px rgba(11, 28, 44, .10);
  --shadow-lg: 0 20px 50px rgba(11, 28, 44, .16);
  --radius: 14px;
  --radius-sm: 8px;
  --max: 1180px;
  --font-serif: "Source Serif 4", "Georgia", "Times New Roman", serif;
  --font-sans: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--white);
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--navy-700); text-decoration: none; transition: color .18s ease; }
a:hover { color: var(--gold-500); }
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--navy-800);
  line-height: 1.18;
  margin: 0 0 .6em;
  font-weight: 600;
  letter-spacing: -.01em;
}
h1 { font-size: clamp(2.1rem, 4.4vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.12rem; }
p { margin: 0 0 1.1em; }
.lead { font-size: 1.16rem; color: var(--ink-soft); }
.muted { color: var(--ink-mute); }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.section { padding: 78px 0; }
.section.alt { background: var(--cream); }
.section.navy { background: var(--navy-800); color: #e9eef3; }
.section.navy h2, .section.navy h3 { color: #fff; }
.eyebrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold-500);
  margin-bottom: 14px;
}
.section.navy .eyebrow { color: var(--gold-300); }
.center { text-align: center; }

/* ---- Header / nav ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255,255,255,.96);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 74px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo {
  width: 44px; height: 44px; flex: none;
  background: linear-gradient(135deg, var(--navy-700), var(--navy-900));
  color: #fff;
  border-radius: 10px;
  display: grid; place-items: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: .02em;
}
.brand .logo span { color: var(--gold-300); }
.brand .brand-text { line-height: 1.15; }
.brand .brand-name { font-family: var(--font-serif); font-weight: 600; color: var(--navy-800); font-size: 1.08rem; }
.brand .brand-sub { font-size: .72rem; color: var(--ink-mute); letter-spacing: .04em; }

.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { color: var(--navy-700); font-weight: 500; font-size: .96rem; }
.nav-links a.active { color: var(--gold-500); font-weight: 600; }
.nav-cta {
  background: var(--navy-800);
  color: #fff !important;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
}
.nav-cta:hover { background: var(--navy-600); }

.nav-toggle {
  display: none;
  background: none; border: 0; cursor: pointer;
  padding: 8px; border-radius: 6px;
}
.nav-toggle svg { width: 26px; height: 26px; stroke: var(--navy-800); }

/* ---- Hero ---- */
.hero {
  position: relative;
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(198,154,74,.16), transparent 60%),
    radial-gradient(900px 600px at 0% 110%, rgba(30,74,120,.18), transparent 55%),
    linear-gradient(160deg, #fff 0%, var(--cream) 60%, #eef1f4 100%);
  overflow: hidden;
}
.hero .wrap {
  position: relative;
  padding-top: 84px;
  padding-bottom: 100px;
}
.hero .hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 48px;
  align-items: center;
}
.hero h1 { margin-bottom: 18px; }
.hero h1 .accent { color: var(--gold-500); }
.hero .lead { font-size: 1.2rem; max-width: 42ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 24px; border-radius: 999px;
  font-weight: 600; font-size: .98rem; cursor: pointer;
  border: 1px solid transparent; transition: all .18s ease;
}
.btn-primary { background: var(--navy-800); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--navy-600); color: #fff; transform: translateY(-2px); }
.btn-gold { background: var(--gold-500); color: #fff; }
.btn-gold:hover { background: var(--gold-400); color: #fff; transform: translateY(-2px); }
.btn-outline { border-color: var(--navy-700); color: var(--navy-700); background: transparent; }
.btn-outline:hover { background: var(--navy-700); color: #fff; }

/* ---- Stat strip ---- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-sm); }
.stat .num { font-family: var(--font-serif); font-size: 2rem; color: var(--navy-800); font-weight: 600; }
.stat .num em { font-style: normal; color: var(--gold-500); }
.stat .label { font-size: .9rem; color: var(--ink-mute); }

/* ---- Cards ---- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .2s;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card .icon { width: 52px; height: 52px; border-radius: 12px; background: var(--cream); color: var(--navy-700); display: grid; place-items: center; margin-bottom: 18px; }
.card .icon svg { width: 26px; height: 26px; }
.card h3 { font-size: 1.22rem; }
.card p { color: var(--ink-soft); flex: 1; }
.card .more { color: var(--gold-500); font-weight: 600; font-size: .92rem; }
.card .more:hover { color: var(--navy-700); }

/* ---- Split / features ---- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split .copy h2 { margin-bottom: 14px; }
.split .copy p { color: var(--ink-soft); }
.split.reverse .copy { order: 2; }
.checklist { list-style: none; padding: 0; margin: 20px 0 0; }
.checklist li { display: flex; gap: 12px; margin-bottom: 12px; color: var(--ink-soft); }
.checklist li svg { flex: none; width: 20px; height: 20px; color: var(--gold-500); margin-top: 3px; }

/* ---- Steps / process ---- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
.step { position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; }
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: inline-block; font-family: var(--font-serif);
  font-size: 1.6rem; color: var(--gold-500); font-weight: 600; margin-bottom: 10px;
}
.step h3 { font-size: 1.1rem; }
.step p { color: var(--ink-soft); font-size: .95rem; }

/* ---- Testimonial/quotes ---- */
.quote { background: #fff; border-left: 4px solid var(--gold-500); border-radius: var(--radius-sm); padding: 22px 26px; box-shadow: var(--shadow-sm); margin-bottom: 20px; }
.quote p { font-style: italic; color: var(--ink-soft); margin-bottom: 8px; }
.quote .who { font-size: .88rem; color: var(--ink-mute); }

/* ---- FAQ (accordion) ---- */
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  padding: 20px 8px; font-family: var(--font-sans); font-size: 1.08rem; font-weight: 600;
  color: var(--navy-800); display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq-q::after { content: "+"; font-size: 1.5rem; color: var(--gold-500); font-weight: 400; transition: transform .2s; }
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a .inner { padding: 0 8px 22px; color: var(--ink-soft); }

/* ---- CTA band ---- */
.cta-band { background: linear-gradient(135deg, var(--navy-800), var(--navy-600)); border-radius: 20px; padding: 52px; text-align: center; color: #fff; position: relative; overflow: hidden; }
.cta-band::before { content: ""; position: absolute; inset: 0; background: radial-gradient(500px 300px at 90% 10%, rgba(198,154,74,.28), transparent 60%); }
.cta-band h2 { color: #fff; position: relative; }
.cta-band p { position: relative; color: rgba(255,255,255,.86); max-width: 60ch; margin: 0 auto 24px; }
.cta-band .btn { position: relative; }

/* ---- Contact ---- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: start; }
.contact-meta li { list-style: none; }
.contact-meta a { color: var(--navy-700); }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); }
.contact-row { display: flex; gap: 14px; margin-bottom: 20px; align-items: flex-start; }
.contact-row .ic { width: 42px; height: 42px; flex: none; border-radius: 10px; background: var(--cream); color: var(--navy-700); display: grid; place-items: center; }
.contact-row .ic svg { width: 22px; height: 22px; }
.contact-row .k { font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; color: var(--ink-mute); }
.contact-row .v { font-weight: 600; color: var(--navy-800); }

/* ---- Forms ---- */
.form { display: grid; gap: 16px; }
.form label { font-size: .9rem; font-weight: 600; color: var(--navy-800); }
.form input, .form select, .form textarea {
  width: 100%; padding: 13px 14px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  font-family: inherit; font-size: 1rem; color: var(--ink); background: #fff;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: 2px solid var(--gold-300); border-color: var(--gold-500); }
.form textarea { min-height: 150px; resize: vertical; }
.form-note { font-size: .82rem; color: var(--ink-mute); }

/* ---- Blog / articles ---- */
.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.article-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .2s; }
.article-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.article-card .thumb { height: 180px; background: linear-gradient(135deg, var(--navy-700), var(--navy-900)); position: relative; }
.article-card .thumb span { position: absolute; left: 14px; bottom: 14px; color: #fff; font-size: .72rem; text-transform: uppercase; letter-spacing: .1em; background: rgba(0,0,0,.25); padding: 4px 10px; border-radius: 999px; }
.article-card .body { padding: 22px; }
.article-card h3 { font-size: 1.18rem; }
.article-card .meta { font-size: .82rem; color: var(--ink-mute); margin-bottom: 10px; }
.article-card p { font-size: .95rem; color: var(--ink-soft); }

/* ---- Article prose ---- */
.prose { max-width: 74ch; margin: 0 auto; }
.prose h2 { margin-top: 1.4em; }
.prose h3 { margin-top: 1.2em; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin-bottom: .5em; }
.prose blockquote { border-left: 4px solid var(--gold-500); margin: 1.4em 0; padding: .4em 1.2em; background: var(--cream); color: var(--ink-soft); border-radius: 0 8px 8px 0; }
.prose table { width: 100%; border-collapse: collapse; margin: 1.4em 0; }
.prose th, .prose td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; font-size: .96rem; }
.prose th { background: var(--cream); color: var(--navy-800); }
.prose code { background: var(--cream); padding: 2px 6px; border-radius: 4px; font-size: .9em; }
.prose .toc { background: var(--cream); border-radius: var(--radius-sm); padding: 18px 22px; margin: 1.4em 0; }
.prose .toc strong { color: var(--navy-800); }
.prose .toc ol { margin: 6px 0 0; }

/* ---- Footer ---- */
.site-footer { background: var(--navy-900); color: #b8c4cf; padding: 60px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.site-footer h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 10px; }
.site-footer a { color: #b8c4cf; }
.site-footer a:hover { color: var(--gold-300); }
.site-footer .brand-name { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 40px; padding-top: 22px; display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; font-size: .85rem; }
.footer-bottom a { color: #b8c4cf; }
.disclaimer { font-size: .82rem; color: #8b98a5; line-height: 1.6; }

/* ---- Utilities ---- */
.breadcrumbs { font-size: .85rem; color: var(--ink-mute); margin-bottom: 24px; }
.breadcrumbs a { color: var(--ink-mute); }
.breadcrumbs span.sep { margin: 0 8px; color: var(--line); }
.tag { display: inline-block; background: var(--cream); color: var(--navy-700); font-size: .78rem; padding: 5px 12px; border-radius: 999px; margin: 0 6px 8px 0; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .hero .hero-grid { grid-template-columns: 1fr; padding-top: 56px; padding-bottom: 64px; }
  .split, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .split.reverse .copy { order: 0; }
  .cards, .steps, .stats, .article-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
  .nav-links {
    position: absolute; top: 74px; left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: flex-start;
    padding: 18px 24px 24px; gap: 18px; border-bottom: 1px solid var(--line);
    display: none; box-shadow: var(--shadow-md);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .cards, .steps, .stats, .article-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .wrap { padding: 0 18px; }
  .cta-band { padding: 36px 22px; }
}

/* ---- Accessibility ---- */
:focus-visible { outline: 3px solid var(--gold-300); outline-offset: 2px; }
.skip-link { position: absolute; left: -999px; top: 0; background: #fff; padding: 10px 16px; z-index: 999; border-radius: 0 0 8px 0; }
.skip-link:focus { left: 0; color: var(--navy-800); }

/* ---- Print ---- */
@media print {
  .site-header, .nav, .cta-band, .site-footer { display: none; }
  body { color: #000; }
}

/* ---- Hero panel ---- */
.hero-card { display: flex; flex-direction: column; gap: 18px; }
.hero-card .card { box-shadow: var(--shadow-lg); border-top: 4px solid var(--gold-500); }
.hero-card .card h3 { margin-bottom: 8px; }
.hero-card .card p { font-size: .95rem; margin-bottom: 12px; }