/* ============================================================
   Printex China — Shared Theme
   Token source of truth. Components consume tokens only.
   ============================================================ */

:root {
  color-scheme: light;

  /* Color */
  --color-primary: #16263d;
  --color-primary-soft: #20344f;
  --color-accent: #c2703a;
  --color-accent-dark: #a85d2d;
  --color-background: #f6f3ee;
  --color-surface: #ffffff;
  --color-surface-warm: #fbf9f5;
  --color-text: #1c222b;
  --color-muted-text: #5b6470;
  --color-border: #e4ded4;
  --color-border-strong: #d3cbbc;
  --color-focus: #16263d;
  --color-on-dark: #f3f0ea;
  --color-on-dark-muted: #b6bdc7;

  /* CMYK accents */
  --cmyk-cyan: #00a6a0;
  --cmyk-magenta: #e2468c;
  --cmyk-yellow: #f5c518;

  /* Typography */
  --font-body: ui-sans-serif, system-ui, "Segoe UI", Arial, sans-serif;
  --font-display: Georgia, "Times New Roman", "Songti SC", serif;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;

  /* Spacing */
  --space-unit: 0.25rem;
  --content-width: 76rem;
  --section-gap: clamp(4rem, 7vw, 7rem);

  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(22, 38, 61, 0.06);
  --shadow-md: 0 8px 28px -12px rgba(22, 38, 61, 0.18);
  --shadow-lg: 0 24px 60px -24px rgba(22, 38, 61, 0.28);
}

* { box-sizing: border-box; }

html {
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-body);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-size: 1rem;
  line-height: 1.65;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-primary);
  line-height: 1.2;
  font-weight: 700;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(2.2rem, 4.6vw, 3.6rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.7rem, 3vw, 2.5rem); }
h3 { font-size: 1.25rem; }
p  { margin: 0 0 1em; }

a { color: var(--color-accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

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

button, input, select, textarea { font: inherit; }

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: 2px;
}

.container {
  width: min(var(--content-width), calc(100% - 2.5rem));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  transform: translateY(-220%);
  z-index: 200;
  background: var(--color-primary);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-dark); color: #fff; }
.btn-dark { background: var(--color-primary); color: #fff; }
.btn-dark:hover { background: var(--color-primary-soft); color: #fff; }
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary); color: #fff; }
.btn-outline-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.55);
}
.btn-outline-light:hover { background: #fff; color: var(--color-primary); }
.btn-lg { padding: 1rem 2.1rem; font-size: 1.02rem; }

/* ---------- Registration mark (brand symbol) ---------- */
.regmark {
  width: 1.15em;
  height: 1.15em;
  border-radius: 50%;
  border: 2px solid currentColor;
  position: relative;
  flex: none;
}
.regmark::before,
.regmark::after {
  content: "";
  position: absolute;
  inset: 0;
}
.regmark::before {
  background:
    linear-gradient(currentColor,currentColor) center/2px 55% no-repeat,
    linear-gradient(currentColor,currentColor) center/55% 2px no-repeat;
  opacity: .85;
}
.regmark::after {
  inset: 26%;
  border-radius: 50%;
  background:
    radial-gradient(circle, var(--cmyk-magenta) 0 26%, transparent 27%),
    radial-gradient(circle at 32% 32%, var(--cmyk-cyan) 0 24%, transparent 25%),
    radial-gradient(circle at 68% 68%, var(--cmyk-yellow) 0 24%, transparent 25%);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 4.6rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--color-primary);
}
.brand:hover { text-decoration: none; }
.brand small {
  display: block;
  font-family: var(--font-body);
  font-size: 0.6rem;
  letter-spacing: .22em;
  color: var(--color-muted-text);
  text-transform: uppercase;
}
.main-nav { margin-left: auto; }
.main-nav ul {
  display: flex;
  align-items: center;
  gap: 1.7rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.main-nav a {
  color: var(--color-primary);
  font-size: 0.93rem;
  font-weight: 500;
  padding: .35rem 0;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover { color: var(--color-accent-dark); text-decoration: none; border-bottom-color: var(--color-accent); }

.header-cta { display: flex; align-items: center; gap: 1rem; }
.header-phone {
  font-size: .85rem;
  color: var(--color-muted-text);
  display: inline-flex;
  gap: .4rem;
}
.nav-toggle {
  display: none;
  background: none;
  border: 1.5px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  padding: .5rem .65rem;
  color: var(--color-primary);
  cursor: pointer;
}
.nav-toggle .bar {
  display: block;
  width: 20px; height: 2px;
  background: currentColor;
  margin: 4px 0;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(1200px 500px at 85% -10%, #22395a 0%, transparent 60%),
    var(--color-primary);
  color: var(--color-on-dark);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  padding-block: clamp(3.5rem, 7vw, 6.5rem);
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-size: .78rem;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--cmyk-yellow);
  border: 1px solid rgba(245,197,24,.4);
  padding: .4rem .9rem;
  border-radius: 100px;
  margin-bottom: 1.4rem;
}
.hero h1 { color: #fff; }
.hero h1 em { color: var(--cmyk-yellow); font-style: normal; }
.hero-sub {
  font-size: 1.1rem;
  color: var(--color-on-dark-muted);
  max-width: 34rem;
  margin-bottom: 2rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; }
.hero-media {
  position: relative;
  background: var(--color-surface-warm);
  border-radius: var(--radius-lg);
  padding: 1.4rem;
  box-shadow: var(--shadow-lg);
  width: 100%;
  aspect-ratio: 1 / 1;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.hero-media img {
  margin-inline: auto;
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
.hero-badge {
  position: absolute;
  left: -1.2rem;
  bottom: 1.8rem;
  background: #fff;
  color: var(--color-primary);
  border-radius: var(--radius-md);
  padding: .7rem 1.1rem;
  box-shadow: var(--shadow-md);
  font-size: .82rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: .6rem;
}
.hero-badge .regmark { font-size: 1rem; color: var(--color-primary); }

/* ---------- Trust / cert strip ---------- */
.trust-strip {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.trust-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  padding-block: 1.3rem;
}
.trust-label {
  font-size: .78rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--color-muted-text);
}
.cert-badges { display: flex; flex-wrap: wrap; gap: .7rem; }
.cert-badge {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: .35rem .85rem;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--color-primary);
  background: var(--color-surface-warm);
}

/* ---------- Sections ---------- */
.section { padding-block: var(--section-gap); }
.section-tight { padding-block: 4rem; }
.section-dark { background: var(--color-primary); color: var(--color-on-dark); }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-warm { background: var(--color-surface-warm); border-block: 1px solid var(--color-border); }

.section-head {
  max-width: 44rem;
  margin-bottom: 3.2rem;
}
.section-head.center { margin-inline: auto; text-align: center; }
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-size: .78rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  font-weight: 700;
  margin-bottom: .9rem;
}
.section-head p { color: var(--color-muted-text); font-size: 1.05rem; }
.section-dark .section-head p { color: var(--color-on-dark-muted); }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 1.6rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.8rem;
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-border-strong); }
.card-icon {
  width: 3rem; height: 3rem;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-accent) 12%, #fff);
  color: var(--color-accent-dark);
  display: grid;
  place-items: center;
  margin-bottom: 1.2rem;
}
.card h3 { margin-bottom: .5rem; }
.card p { color: var(--color-muted-text); font-size: .94rem; margin-bottom: 0; }
.card .card-link {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  margin-top: 1.1rem;
  font-size: .88rem;
  font-weight: 600;
}

/* Product card (image-led) */
.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .2s ease, box-shadow .2s ease;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.product-media {
  background: var(--color-surface-warm);
  aspect-ratio: 1 / 1;
  width: 100%;
  min-height: 0;
  display: grid;
  place-items: center;
  padding: 1.2rem;
  overflow: hidden;
}
.product-media img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
.product-body { padding: 1.3rem 1.4rem 1.5rem; }
.product-body h3 { font-size: 1.08rem; margin-bottom: .4rem; }
.product-body p { font-size: .88rem; color: var(--color-muted-text); margin: 0 0 .8rem; }
.product-body .card-link { margin-top: 0; }

/* ---------- Stats ---------- */
.stats-band { background: var(--color-primary-soft); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  padding-block: 3.5rem;
  text-align: center;
}
.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4vw, 3.4rem);
  font-weight: 700;
  color: var(--cmyk-yellow);
  line-height: 1;
  margin-bottom: .5rem;
}
.stat-label {
  font-size: .85rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-on-dark-muted);
}

/* ---------- Persona (why us) ---------- */
.persona-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-md);
  padding: 2rem;
}
.persona-card .card-icon {
  background: rgba(245,197,24,.14);
  color: var(--cmyk-yellow);
}
.persona-card h3 { color: #fff; }
.persona-card p { color: var(--color-on-dark-muted); font-size: .93rem; }

/* ---------- Capability split ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.split-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}
.split-media img { aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.feature-list { list-style: none; margin: 1.4rem 0 0; padding: 0; }
.feature-list li {
  display: flex;
  gap: .8rem;
  padding: .7rem 0;
  border-bottom: 1px dashed var(--color-border);
  font-size: .95rem;
}
.feature-list li:last-child { border-bottom: 0; }
.feature-list svg { color: var(--color-accent); flex: none; margin-top: .2rem; }

/* ---------- Testimonials ---------- */
.quote-card { position: relative; }
.quote-card .stars { color: var(--color-accent); letter-spacing: .15em; margin-bottom: .9rem; }
.quote-card blockquote {
  margin: 0 0 1.2rem;
  font-size: .98rem;
  color: var(--color-text);
  font-style: italic;
}
.quote-author { display: flex; align-items: center; gap: .8rem; }
.avatar {
  width: 2.8rem; height: 2.8rem;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: grid; place-items: center;
  font-weight: 700;
  font-family: var(--font-display);
}
.quote-author strong { display: block; font-size: .92rem; color: var(--color-primary); }
.quote-author span { font-size: .8rem; color: var(--color-muted-text); }

/* ---------- FAQ ---------- */
.faq-list { display: grid; gap: .9rem; max-width: 52rem; margin-inline: auto; }
.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0 1.5rem;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 1.25rem 0;
  font-weight: 600;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--color-accent);
  transition: transform .2s ease;
  line-height: 1;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-body { color: var(--color-muted-text); font-size: .94rem; padding-bottom: 1.3rem; }

/* ---------- CTA band ---------- */
.cta-band {
  background:
    radial-gradient(800px 300px at 10% 120%, rgba(245,197,24,.18), transparent 60%),
    var(--color-primary);
  color: var(--color-on-dark);
  text-align: center;
}
.cta-band h2 { color: #fff; }
.cta-band p { color: var(--color-on-dark-muted); max-width: 38rem; margin-inline: auto 2rem; }
.cta-band .btn { margin-top: .4rem; }

/* ---------- Footer ---------- */
.site-footer {
  background: #101d30;
  color: var(--color-on-dark-muted);
  padding-top: 4.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
}
.site-footer h4 {
  color: #fff;
  font-family: var(--font-body);
  font-size: .82rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
}
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: .65rem; }
.site-footer a { color: var(--color-on-dark-muted); font-size: .92rem; }
.site-footer a:hover { color: #fff; text-decoration: none; }
.footer-about p { font-size: .9rem; margin: 1rem 0 1.3rem; }
.footer-contact li { display: flex; gap: .6rem; font-size: .9rem; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-block: 1.4rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: .82rem;
}
.footer-certs { display: flex; gap: .6rem; flex-wrap: wrap; }
.footer-certs span {
  border: 1px solid rgba(255,255,255,.18);
  border-radius: var(--radius-sm);
  padding: .25rem .7rem;
  font-size: .72rem;
  letter-spacing: .05em;
}
.social { display: flex; gap: .7rem; }
.social a {
  width: 2.2rem; height: 2.2rem;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 50%;
  display: grid; place-items: center;
}
.social a:hover { background: #fff; color: var(--color-primary); }

/* ---------- Quote dialog ---------- */
dialog.quote-dialog {
  border: 0;
  border-radius: var(--radius-lg);
  padding: 0;
  width: min(34rem, calc(100% - 2rem));
  box-shadow: var(--shadow-lg);
}
dialog.quote-dialog::backdrop { background: rgba(16,29,48,.62); backdrop-filter: blur(2px); }
.dialog-inner { padding: 2.2rem; }
.dialog-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; margin-bottom: 1.4rem; }
.dialog-head h3 { margin: 0; }
.dialog-close {
  background: none; border: 0; font-size: 1.5rem; line-height: 1;
  color: var(--color-muted-text); cursor: pointer; padding: .2rem .5rem;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-field { display: flex; flex-direction: column; gap: .4rem; margin-bottom: 1rem; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-size: .85rem; font-weight: 600; color: var(--color-primary); }
.form-field input, .form-field select, .form-field textarea {
  border: 1.5px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  padding: .65rem .8rem;
  background: var(--color-surface-warm);
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none; border-color: var(--color-primary); background: #fff;
}

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1023px) {
  .nav-toggle { display: block; margin-left: auto; }
  .main-nav {
    position: absolute;
    top: 4.6rem; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    display: none;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 0; padding: .6rem 1.25rem 1.2rem; }
  .main-nav li { border-bottom: 1px solid var(--color-border); }
  .main-nav a { display: block; padding: .9rem 0; }
  .header-phone { display: none; }

  .hero-grid { grid-template-columns: 1fr; }
  .hero-media { order: 2; }
  .grid-4, .grid-5 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 2.2rem; }
  .split { grid-template-columns: 1fr; }
  .split-media { order: -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 599px) {
  .grid-4, .grid-5 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .hero-badge { left: .5rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}