/* ============================================================
   Yancheng Happy Toy — Design A「优雅编辑风」design system
   干邑棕 accent · 暖沙 color bands · 深松绿 quality · 哑金点缀
   Pill buttons · soft shadows · arch photo frame · auto-cruise
   Source of truth: design-input/新设计A_* (Claude Design, 2026-07)
   ============================================================ */

@font-face {
  font-family: 'Plus Jakarta Sans';
  src: url('../assets/fonts/pjs-400.woff2') format('woff2');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Plus Jakarta Sans';
  src: url('../assets/fonts/pjs-500.woff2') format('woff2');
  font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Plus Jakarta Sans';
  src: url('../assets/fonts/pjs-600.woff2') format('woff2');
  font-weight: 600; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Plus Jakarta Sans';
  src: url('../assets/fonts/pjs-700.woff2') format('woff2');
  font-weight: 700; font-style: normal; font-display: swap;
}

:root {
  /* primitive */
  --ink: #2C2A29;
  --ink-deep: #23201C;
  --ink-soft: #6F6A64;
  --line: #E9E4DE;
  --paper: #FFFFFF;
  --sand-50: #FBF8F1;
  --sand-100: #F7F3EA;
  --sand-200: #F5EFE4;
  --sand-300: #E8E1D6;
  --sand-350: #EFE3C9;
  --gold-300: #E9D9AE;
  --gold-500: #E2B15C;
  --pine: #3E5241;
  --pine-soft: #49604C;
  --cognac: #B95A25;
  /* semantic */
  --accent: var(--cognac);
  --bg-hero: var(--sand-200);
  --bg-band: var(--sand-200);
  --bg-market: var(--sand-350);
  --bg-quality: var(--pine);
  --bg-input: var(--sand-200);
  --shadow-card: 0 10px 30px rgba(44, 42, 41, 0.08);
  --shadow-float: 0 24px 48px -20px rgba(44, 42, 41, 0.28);
  --font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI',
          'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  font-family: var(--font);
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
html[lang^="zh"] body { font-size: 16px; letter-spacing: 0.01em; }

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
em { font-style: normal; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 28px; }

::selection { background: var(--gold-300); color: var(--ink); }
:focus-visible { outline: 2.5px solid var(--accent); outline-offset: 2px; }

/* ---------------- typography ---------------- */

h1 {
  font-size: clamp(2.5rem, 4.4vw, 3.84rem);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: 0.01em;
}
h2 {
  font-size: clamp(1.75rem, 3vw, 2.56rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.005em;
}
h1 em, h2 em { color: var(--accent); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: '';
  width: 28px; height: 2px;
  background: var(--accent);
}

.section-head { max-width: 760px; margin-bottom: 48px; }
.section-head p { margin-top: 16px; color: var(--ink-soft); }

section { padding: 104px 0; }

/* ---------------- buttons (pills) ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  white-space: nowrap;
  padding: 16px 32px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.03em;
  border: 1px solid transparent;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease,
              transform 0.2s ease, box-shadow 0.2s ease;
}
.btn .arr { transition: transform 0.2s ease; }
.btn:hover .arr { transform: translateX(4px); }
.btn:hover { transform: translateY(-1px); }

.btn-solid { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn-solid:hover { background: var(--accent); border-color: var(--accent); box-shadow: 0 12px 24px -12px rgba(185, 90, 37, 0.5); }

.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: #fff; }

/* ---------------- header ---------------- */

.announce {
  background: var(--sand-100);
  border-bottom: 1px solid var(--line);
  text-align: center;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  padding: 10px 16px;
}

.head-mid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding-top: 24px;
  padding-bottom: 24px;
}
.head-side { justify-self: start; }

.lang-link {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border-bottom: 2px solid var(--line);
  padding-bottom: 2px;
  transition: border-color 0.18s ease, color 0.18s ease;
}
.lang-link:hover { color: var(--accent); border-color: var(--accent); }

.brand { text-align: center; justify-self: center; }
.brand .mark {
  display: block;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
}
.brand .mark em { color: var(--accent); }
.brand .sub {
  display: block;
  margin-top: 7px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.head-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 14px;
}
.head-cta { padding: 13px 26px; font-size: 13px; }

.site-head .nav {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.site-head .nav a {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 17px 20px;
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.site-head .nav a:hover { color: var(--accent); }
.site-head .nav a.active { border-bottom-color: var(--accent); color: var(--accent); }

.menu-btn {
  display: none;
  width: 44px; height: 44px;
  background: none;
  border: 1px solid var(--ink);
  border-radius: 999px;
  position: relative;
}
.menu-btn span, .menu-btn span::before, .menu-btn span::after {
  content: ''; position: absolute; left: 12px; right: 12px; height: 2px;
  border-radius: 2px;
  background: var(--ink); transition: transform 0.2s ease, opacity 0.2s ease;
}
.menu-btn span { top: 20px; }
.menu-btn span::before { content: ''; top: -6px; left: 0; right: 0; }
.menu-btn span::after { content: ''; top: 6px; left: 0; right: 0; }
.menu-btn[aria-expanded="true"] span { background: transparent; }
.menu-btn[aria-expanded="true"] span::before { transform: translateY(6px) rotate(45deg); }
.menu-btn[aria-expanded="true"] span::after { transform: translateY(-6px) rotate(-45deg); }

/* ---------------- hero ---------------- */

.hero {
  background: var(--bg-hero);
  padding: 0;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(40px, 5vw, 72px);
  align-items: center;
  padding-top: clamp(56px, 7vw, 96px);
  padding-bottom: clamp(56px, 7vw, 96px);
}
.hero h1 { margin-bottom: 24px; }
.lede {
  font-size: 17.5px;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 46ch;
}

.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.hero-audit {
  margin-top: 44px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}
.hero-audit strong { font-weight: 700; color: var(--ink); margin-right: 4px; }
.hero-audit .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--accent); opacity: 0.6; }

.hero-visual { position: relative; padding: 12px 12px 0 0; }
.arch-hero {
  position: relative;
  border-radius: 300px 300px 26px 26px;
  overflow: hidden;
  aspect-ratio: 4 / 4.7;
  box-shadow: var(--shadow-card);
}
.arch-hero img { width: 100%; height: 100%; object-fit: cover; }
.hero-visual::before {
  content: '';
  position: absolute;
  inset: -12px -12px 24px 24px;
  border: 1.5px solid rgba(185, 90, 37, 0.35);
  border-radius: 320px 320px 30px 30px;
  pointer-events: none;
}

.hero-card {
  position: absolute;
  left: -28px;
  bottom: 36px;
  background: var(--paper);
  border-radius: 18px;
  box-shadow: var(--shadow-float);
  padding: 18px 22px;
}
.hero-card .num {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--ink);
}
.hero-card .num sup { color: var(--accent); font-size: 0.6em; }
.hero-card .lbl {
  margin-top: 3px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ---------------- marquee band ---------------- */

.marquee-band {
  overflow: hidden;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  padding: 15px 0;
}
.marquee {
  display: flex;
  gap: 56px;
  width: max-content;
  animation: slide 56s linear infinite;
}
.marquee span {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--ink-soft);
  position: relative;
}
.marquee span::after {
  content: '·';
  color: var(--accent);
  position: absolute;
  right: -34px;
}
@keyframes slide { to { transform: translateX(-50%); } }

/* ---------------- stats band ---------------- */

.stats-band { padding: 0; background: var(--paper); }
.stats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-bottom: 1px solid var(--line);
}
.stat { padding: 40px 20px; text-align: center; }
.stat + .stat { border-left: 1px solid var(--line); }
.stat .num { font-size: clamp(2rem, 3.4vw, 2.9rem); font-weight: 700; letter-spacing: -0.02em; }
.stat .num sup { font-size: 0.5em; color: var(--accent); font-weight: 700; }
.stat .lbl {
  margin-top: 6px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ---------------- about ---------------- */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.08fr;
  gap: clamp(40px, 6vw, 88px);
  align-items: center;
}

.about-visual { position: relative; padding: 0 40px 64px 0; }
.about-visual .photo-main {
  border-radius: 18px;
  overflow: hidden;
  aspect-ratio: 4 / 4.4;
  box-shadow: var(--shadow-card);
}
.about-visual .photo-main img { width: 100%; height: 100%; object-fit: cover; }
.about-visual .photo-over {
  position: absolute;
  right: 0; bottom: 0;
  width: 56%;
  border: 6px solid var(--paper);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-float);
  aspect-ratio: 4 / 2.9;
}
.about-visual .photo-over img { width: 100%; height: 100%; object-fit: cover; }

.about-copy h2 { margin-bottom: 24px; }
.about-copy p { margin-bottom: 18px; color: var(--ink-soft); }

.motto-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  background: rgba(185, 90, 37, 0.1);
  border-radius: 999px;
  padding: 5px 14px;
  margin: 10px 0 10px;
}
.about-quote {
  background: var(--sand-100);
  border-radius: 16px;
  padding: 22px 26px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink) !important;
  margin-bottom: 0 !important;
}

/* ---------------- product categories ---------------- */

.cats { background: var(--bg-band); }
.cats-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.cat-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px 18px;
}
.cat-card {
  display: block;
  text-align: center;
  background: var(--paper);
  border-radius: 16px;
  padding: 10px 10px 16px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.cat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); }
.cat-card .ph {
  aspect-ratio: 1 / 1;
  border-radius: 10px;
  overflow: hidden;
  background: var(--sand-50);
  margin-bottom: 12px;
}
.cat-card .ph img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.cat-card:hover .ph img { transform: scale(1.05); }
.cat-card .nm { font-size: 14.5px; font-weight: 700; line-height: 1.3; }
.cat-card:hover .nm { color: var(--accent); }
.cat-card .nm-sub { font-size: 12px; color: var(--ink-soft); margin-top: 3px; }

/* ---------------- process: auto-cruise ---------------- */

.process-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}
.cruise-note { font-size: 12px; letter-spacing: 0.06em; color: var(--ink-soft); }

.cruise { overflow-x: auto; scrollbar-width: thin; scrollbar-color: var(--line) transparent; }
.cruise.js-cruise { overflow: hidden; cursor: grab; }
.cruise.js-cruise.dragging { cursor: grabbing; }
.cruise-track {
  display: flex;
  gap: 24px;
  width: max-content;
  padding-bottom: 12px;
}
.step { flex: 0 0 236px; }
.step .ph {
  aspect-ratio: 4 / 3;
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 14px;
  background: var(--sand-50);
  box-shadow: var(--shadow-card);
}
.step .ph img { width: 100%; height: 100%; object-fit: cover; pointer-events: none; }
.step .no {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
  display: block;
}
.step .nm { font-size: 15.5px; font-weight: 700; margin-top: 8px; }

/* ---------------- quality (deep pine) ---------------- */

.quality { background: var(--bg-quality); color: #fff; }
.quality .eyebrow { color: var(--gold-500); }
.quality .eyebrow::before { background: var(--gold-500); }
.quality .section-head p { color: rgba(255, 255, 255, 0.78); }

.audit-wall {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.audit-tile {
  background: var(--paper);
  border-radius: 14px;
  padding: 24px 22px;
  color: var(--ink);
}
.audit-tile .nm { font-size: 17px; font-weight: 700; }
.audit-tile .ds { font-size: 13px; color: var(--ink-soft); margin-top: 6px; line-height: 1.5; }

.cert-row {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
}
.cert-row button {
  border: none;
  padding: 0;
  background: none;
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.2s ease;
}
.cert-row button:hover { transform: translateY(-4px); }
.cert-row img { aspect-ratio: 3 / 4; object-fit: cover; width: 100%; }
.cert-note { margin-top: 18px; font-size: 13px; color: rgba(255, 255, 255, 0.72); }

/* ---------------- OEM ---------------- */

.oem-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}

.oem-step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 18px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.oem-step:last-of-type { border-bottom: 1px solid var(--line); }
.oem-step .no { font-size: 26px; font-weight: 700; color: var(--accent); line-height: 1.1; }
.oem-step h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.oem-step p { font-size: 14.5px; color: var(--ink-soft); }

.terms {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.term-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 26px 24px;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.term-card:hover { box-shadow: var(--shadow-card); transform: translateY(-2px); }
.term-card .ic { font-size: 22px; margin-bottom: 12px; }
.term-card .val { font-size: 22px; font-weight: 700; letter-spacing: -0.01em; }
.term-card .lbl {
  margin-top: 4px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.term-foot { grid-column: 1 / -1; font-size: 13px; color: var(--ink-soft); }

/* ---------------- markets ---------------- */

.markets { background: var(--bg-market); }
.market-rows { border-top: 1px solid rgba(44, 42, 41, 0.16); }
.market-row {
  display: grid;
  grid-template-columns: 80px 1fr 1.3fr;
  gap: 24px;
  align-items: baseline;
  padding: 30px 0;
  border-bottom: 1px solid rgba(44, 42, 41, 0.16);
}
.market-row .no { font-size: 13px; font-weight: 700; color: var(--accent); letter-spacing: 0.1em; }
.market-row h3 { font-size: clamp(1.3rem, 2.2vw, 1.76rem); font-weight: 700; }
.market-row p { color: var(--ink); opacity: 0.72; font-size: 15px; }

/* ---------------- FAQ ---------------- */

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}
.faq-ask { font-size: 14.5px; color: var(--ink-soft); margin-top: 14px; }
.faq-ask a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list details:first-child { border-top: 1px solid var(--line); }
.faq-list summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 22px 0;
  font-size: 17px;
  font-weight: 700;
  cursor: pointer;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list .plus {
  font-size: 22px;
  font-weight: 400;
  color: var(--accent);
  transition: transform 0.2s ease;
  flex: 0 0 auto;
}
.faq-list details[open] .plus { transform: rotate(45deg); }
.faq-list .ans { padding: 0 0 24px; color: var(--ink-soft); max-width: 68ch; }

/* ---------------- contact ---------------- */

.contact { background: linear-gradient(180deg, var(--sand-200) 0%, #FDFBF7 100%); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}

.c-block { padding: 20px 0; border-bottom: 1px solid rgba(44, 42, 41, 0.12); }
.c-block:first-of-type { padding-top: 0; }
.c-block .lbl {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 7px;
}
.c-block .val { font-size: 17px; font-weight: 600; }
.c-block .val small { font-size: 14px; font-weight: 400; color: var(--ink-soft); }
.c-block a:hover { color: var(--accent); }

.form {
  background: var(--paper);
  border-radius: 24px;
  box-shadow: var(--shadow-card);
  padding: clamp(26px, 4vw, 42px);
}
.form h3 { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.form .hint { font-size: 13.5px; color: var(--ink-soft); margin-bottom: 24px; }

.f-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.f-field { margin-bottom: 16px; }
.f-field label {
  display: block;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 7px;
}
.f-field input, .f-field textarea {
  width: 100%;
  font: inherit;
  font-size: 15px;
  color: var(--ink);
  background: var(--bg-input);
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 13px 16px;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.f-field textarea { min-height: 120px; resize: vertical; }
.f-field input:focus, .f-field textarea:focus {
  outline: none;
  background: var(--sand-50);
  border-color: var(--accent);
}
.f-field ::placeholder { color: #B4AEA7; }
.form .btn { width: 100%; margin-top: 8px; }
.mailto-note { text-align: center; font-size: 13.5px; color: var(--ink-soft); margin-top: 16px; }
.mailto-note a { text-decoration: underline; text-underline-offset: 3px; font-weight: 600; }
.mailto-note a:hover { color: var(--accent); }

/* ---------------- footer ---------------- */

.site-foot {
  background: var(--ink-deep);
  color: #F3EFE9;
  padding: 80px 0 0;
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
}
.foot-brand .mark { font-size: 26px; font-weight: 700; }
.foot-brand .mark em { color: var(--accent); }
.foot-brand p { margin-top: 16px; font-size: 14px; color: rgba(243, 239, 233, 0.65); max-width: 36ch; }

.foot-col h4 {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(243, 239, 233, 0.5);
  margin-bottom: 18px;
}
.foot-col ul { list-style: none; }
.foot-col li { margin-bottom: 12px; }
.foot-col a, .foot-col li { font-size: 14.5px; color: rgba(243, 239, 233, 0.85); }
.foot-col a:hover { color: var(--gold-500); }

.foot-base {
  border-top: 1px solid rgba(243, 239, 233, 0.14);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: rgba(243, 239, 233, 0.55);
}
.foot-base a:hover { color: var(--gold-500); }
.site-foot.slim { padding-top: 0; }

/* ---------------- products page ---------------- */

.page-hero { padding: 80px 0 56px; }
.page-hero h1 { max-width: 820px; }
.page-hero p { margin-top: 18px; max-width: 62ch; color: var(--ink-soft); }
.page-hero.tight { padding-bottom: 40px; }

.chip-bar {
  position: sticky;
  top: 0;
  z-index: 55;
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
}
.chips {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}
.chips::-webkit-scrollbar { display: none; }
.chip {
  flex: 0 0 auto;
  font-size: 13px;
  font-weight: 600;
  padding: 9px 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: all 0.15s ease;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip.active { background: var(--ink); border-color: var(--ink); color: #fff; }

.cat-section { padding: 56px 0 8px; }
.cat-title {
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.cat-title h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
.cat-title .cnt {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--accent);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.gallery button {
  border: none;
  padding: 0;
  background: none;
  border-radius: 14px;
  overflow: hidden;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.gallery button:hover { box-shadow: var(--shadow-card); transform: translateY(-3px); }
.gallery img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: var(--sand-50);
  transition: transform 0.3s ease;
}
.gallery button:hover img { transform: scale(1.04); }

.products-cta {
  background: var(--bg-band);
  border-radius: 24px;
  text-align: center;
  padding: clamp(44px, 6vw, 76px) 28px;
  margin: 72px 0;
}
.products-cta h2 { margin-bottom: 14px; }
.products-cta h2 em { display: block; font-size: 0.72em; margin-top: 10px; }
.products-cta p { color: var(--ink-soft); max-width: 56ch; margin: 0 auto 28px; }

/* ---------------- 404 ---------------- */

.nf-wrap {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
  background: linear-gradient(180deg, var(--sand-200) 0%, #FFFFFF 100%);
}
.nf-code {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.3em;
  color: var(--accent);
  margin-bottom: 10px;
}
.nf-wrap h1 { margin-bottom: 16px; }
.nf-wrap p { color: var(--ink-soft); margin-bottom: 32px; }

/* ---------------- lightbox ---------------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(35, 32, 28, 0.88);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: min(920px, 100%);
  max-height: 100%;
  border-radius: 14px;
  background: #fff;
}
.lightbox .close {
  position: absolute;
  top: 24px; right: 28px;
  width: 44px; height: 44px;
  background: rgba(255, 255, 255, 0.12);
  border: none;
  border-radius: 999px;
  color: #fff;
  font-size: 26px;
  line-height: 1;
}
.lightbox .close:hover { background: var(--accent); }

/* ---------------- reveal ---------------- */

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.in { opacity: 1; transform: none; }
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-stagger.in > * { opacity: 1; transform: none; }
.reveal-stagger.in > *:nth-child(2) { transition-delay: 70ms; }
.reveal-stagger.in > *:nth-child(3) { transition-delay: 140ms; }
.reveal-stagger.in > *:nth-child(4) { transition-delay: 210ms; }
.reveal-stagger.in > *:nth-child(5) { transition-delay: 280ms; }
.reveal-stagger.in > *:nth-child(6) { transition-delay: 350ms; }
.reveal-stagger.in > *:nth-child(n+7) { transition-delay: 420ms; }

/* ---------------- responsive ---------------- */

@media (max-width: 1080px) {
  .cat-grid { grid-template-columns: repeat(4, 1fr); }
  .gallery { grid-template-columns: repeat(3, 1fr); }
  .audit-wall { grid-template-columns: repeat(2, 1fr); }
  .cert-row { grid-template-columns: repeat(4, 1fr); }
  .stats { grid-template-columns: repeat(3, 1fr); }
  .stat:nth-child(4), .stat:nth-child(5) { border-top: 1px solid var(--line); }
  .stat:nth-child(4) { border-left: none; }
  .oem-grid, .contact-grid, .about-grid, .faq-grid { grid-template-columns: 1fr; }
  .about-visual { max-width: 560px; }
  .market-row { grid-template-columns: 48px 1fr; }
  .market-row p { grid-column: 2; }
  .hero-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  section { padding: 64px 0; }

  .head-mid { grid-template-columns: auto 1fr auto; gap: 14px; padding-top: 16px; padding-bottom: 16px; }
  .brand { justify-self: start; text-align: left; order: -1; }
  .head-side { justify-self: end; order: 2; }
  .head-actions { order: 3; }
  .head-cta { display: none; }
  .menu-btn { display: block; }

  .site-head .nav {
    position: absolute;
    left: 0; right: 0;
    flex-direction: column;
    border-bottom: 1px solid var(--line);
    display: none;
    z-index: 70;
  }
  .site-head .nav.open { display: flex; }
  .site-head .nav a { padding: 15px 28px; border-bottom: 1px solid var(--line); }
  .site-head .nav a:last-child { border-bottom: none; }

  .hero-grid { grid-template-columns: 1fr; padding-top: 48px; padding-bottom: 48px; }
  .hero-visual { padding: 12px 12px 0 12px; max-width: 480px; margin: 0 auto; }
  .hero-card { left: -4px; bottom: 24px; }

  .about-visual { padding-right: 24px; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .terms { grid-template-columns: 1fr 1fr; }
  .f-row { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat { border-left: none !important; border-top: 1px solid var(--line); }
  .stat:nth-child(-n+2) { border-top: none; }
}

@media (max-width: 540px) {
  .wrap { padding: 0 20px; }
  .cert-row { grid-template-columns: repeat(2, 1fr); }
  .audit-wall { grid-template-columns: 1fr; }
  .terms { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; }
  .hero-ctas .btn { width: 100%; }
  .announce { font-size: 11px; }
  .step { flex: 0 0 200px; }
}