/* ─── HY Hardware Supplier — Main Stylesheet ─── */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,300;1,400&family=Jost:wght@300;400;500;600&display=swap');

:root {
  --black:   #0a0a0a;
  --offblack: #1a1a1a;
  --charcoal: #2c2c2c;
  --gold:    #b8962e;
  --gold-lt: #d4b054;
  --cream:   #f7f4ef;
  --white:   #ffffff;
  --gray-lt: #f2f0ec;
  --gray-md: #c8c4bc;
  --gray-dk: #7a7670;
  --border:  rgba(184,150,46,0.2);
  --ff-serif: 'Cormorant Garamond', Georgia, serif;
  --ff-sans:  'Jost', system-ui, sans-serif;
  --radius: 2px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --shadow: 0 4px 32px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.14);
}

*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { scroll-behavior: smooth; font-size:16px; }
body {
  font-family: var(--ff-sans);
  color: var(--offblack);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}

/* ─── TYPOGRAPHY ─── */
h1,h2,h3,h4,h5 {
  font-family: var(--ff-serif);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.01em;
}
h1 { font-size: clamp(2.8rem,5vw,4.5rem); }
h2 { font-size: clamp(2rem,3.5vw,3rem); }
h3 { font-size: clamp(1.3rem,2vw,1.7rem); }
h4 { font-size: 1.15rem; font-family: var(--ff-sans); font-weight: 500; }
p  { font-size: 0.95rem; line-height: 1.8; color: var(--charcoal); }
a  { color: inherit; text-decoration: none; }

.section-tag {
  display: inline-block;
  font-family: var(--ff-sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}
.section-title { margin-bottom: 0.5rem; }
.section-sub {
  font-size: 0.95rem;
  color: var(--gray-dk);
  max-width: 560px;
}

/* ─── LAYOUT ─── */
.container { max-width: 1260px; margin: 0 auto; padding: 0 2rem; }
.section { padding: 6rem 0; }
.section-header { margin-bottom: 3.5rem; }
.section-header.center { text-align: center; }
.section-header.center .section-sub { margin: 0 auto; }

/* ─── NAVIGATION ─── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(184,150,46,0.15);
  transition: background var(--transition);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 1rem;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}
.nav-logo-mark {
  width: 36px; height: 36px;
  border: 1.5px solid var(--gold);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--ff-serif);
  font-size: 1.1rem;
  color: var(--gold);
  letter-spacing: 0.05em;
}
.nav-logo-text {
  font-family: var(--ff-serif);
  font-size: 1.15rem;
  color: var(--white);
  font-weight: 300;
  letter-spacing: 0.05em;
  line-height: 1.2;
}
.nav-logo-text span { display: block; font-size: 0.65rem; font-family: var(--ff-sans); letter-spacing: 0.2em; color: var(--gold); text-transform: uppercase; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.78);
  padding: 0.5rem 0.85rem;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--gold); }

.nav-right { display: flex; align-items: center; gap: 1rem; }

.lang-switcher {
  position: relative;
}
.lang-current {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  cursor: pointer;
  padding: 0.4rem 0.6rem;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
  transition: color var(--transition), border-color var(--transition);
}
.lang-current:hover { color: var(--gold); border-color: var(--gold); }
.lang-current svg { width:14px; height:14px; fill:currentColor; transition: transform var(--transition); }
.lang-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--offblack);
  border: 1px solid rgba(184,150,46,0.3);
  min-width: 130px;
  z-index: 200;
}
.lang-switcher:hover .lang-dropdown,
.lang-switcher:focus-within .lang-dropdown { display: block; }
.lang-btn {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.55rem 1rem;
  font-size: 0.78rem;
  font-family: var(--ff-sans);
  color: rgba(255,255,255,0.7);
  background: none;
  border: none;
  cursor: pointer;
  letter-spacing: 0.06em;
  transition: background var(--transition), color var(--transition);
}
.lang-btn:hover, .lang-btn.active { background: rgba(184,150,46,0.12); color: var(--gold); }

.nav-cta {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--black);
  background: var(--gold);
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius);
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
}
.nav-cta:hover { background: var(--gold-lt); transform: translateY(-1px); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.5rem;
}
.hamburger span {
  width: 22px; height: 1.5px;
  background: var(--white);
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 72px; left: 0; right: 0; bottom: 0;
  background: var(--offblack);
  z-index: 999;
  padding: 2rem;
  flex-direction: column;
  gap: 0.5rem;
  overflow-y: auto;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 1.1rem;
  font-family: var(--ff-serif);
  color: rgba(255,255,255,0.85);
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  transition: color var(--transition);
}
.mobile-menu a:hover { color: var(--gold); }
.mobile-lang { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.5rem; }
.mobile-lang .lang-btn {
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
  font-size: 0.75rem;
  padding: 0.4rem 0.8rem;
}

/* ─── HERO ─── */
.hero {
  min-height: 100vh;
  background: var(--black);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 72px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 70% 50%, rgba(184,150,46,0.06) 0%, transparent 70%),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 79px,
      rgba(184,150,46,0.04) 79px,
      rgba(184,150,46,0.04) 80px
    );
}
.hero-accent {
  position: absolute;
  right: -100px; top: 50%;
  transform: translateY(-50%);
  width: 55vw; height: 80vh;
  border: 1px solid rgba(184,150,46,0.1);
  border-radius: 50%;
  pointer-events: none;
}
.hero-accent::before {
  content:'';
  position: absolute;
  inset: 40px;
  border: 1px solid rgba(184,150,46,0.06);
  border-radius: 50%;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  animation: fadeUp 1s ease both;
}
.hero-tag { color: var(--gold); }
.hero h1 {
  color: var(--white);
  margin-bottom: 1.5rem;
  font-weight: 300;
}
.hero h1 em { font-style: italic; color: var(--gold-lt); }
.hero-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.65);
  max-width: 520px;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}
.hero-btns { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 1rem 2rem;
  background: var(--gold);
  color: var(--black);
  border-radius: var(--radius);
  transition: background var(--transition), transform var(--transition);
}
.btn-primary:hover { background: var(--gold-lt); transform: translateY(-2px); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 1rem 2rem;
  border: 1px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.8);
  border-radius: var(--radius);
  transition: border-color var(--transition), color var(--transition);
}
.btn-outline:hover { border-color: var(--gold); color: var(--gold); }

/* ─── STATS BAR ─── */
.stats-bar {
  background: var(--offblack);
  border-top: 1px solid rgba(184,150,46,0.15);
  border-bottom: 1px solid rgba(184,150,46,0.15);
  padding: 2.5rem 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 1rem;
  text-align: center;
}
.stat-item { padding: 0.5rem 1rem; }
.stat-num {
  font-family: var(--ff-serif);
  font-size: 2.8rem;
  font-weight: 300;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 0.3rem;
}
.stat-label { font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: rgba(255,255,255,0.5); }

/* ─── CATEGORIES ─── */
.categories { background: var(--cream); }
.cats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px,1fr));
  gap: 1.5px;
  background: rgba(184,150,46,0.15);
}
.cat-card {
  background: var(--white);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: background var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}
.cat-card::after {
  content:'';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--gold);
  transition: width 0.4s ease;
}
.cat-card:hover { background: var(--offblack); }
.cat-card:hover h3,
.cat-card:hover p { color: rgba(255,255,255,0.8); }
.cat-card:hover .cat-link { color: var(--gold); }
.cat-card:hover::after { width: 100%; }
.cat-icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
}
.cat-icon svg { width: 40px; height: 40px; stroke: var(--gold); fill: none; stroke-width: 1.2; }
.cat-card h3 { font-size: 1.25rem; transition: color var(--transition); }
.cat-card p { font-size: 0.875rem; transition: color var(--transition); }
.cat-link { font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--gold); margin-top: auto; transition: color var(--transition); }

/* ─── WHY CHOOSE ─── */
.why { background: var(--white); }
.why-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 3rem 4rem;
}
.why-item { position: relative; }
.why-num {
  font-family: var(--ff-serif);
  font-size: 4rem;
  font-weight: 300;
  color: rgba(184,150,46,0.1);
  line-height: 1;
  margin-bottom: -1.5rem;
}
.why-item h4 { font-size: 1rem; font-weight: 500; letter-spacing: 0.06em; margin-bottom: 0.75rem; }
.why-item p { font-size: 0.875rem; color: var(--gray-dk); }

/* ─── FEATURED PRODUCTS ─── */
.featured { background: var(--gray-lt); }
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px,1fr));
  gap: 1.5rem;
}
.product-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), transform var(--transition);
}
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.product-img {
  aspect-ratio: 4/3;
  background: var(--gray-lt);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-img-placeholder {
  width: 100%; height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  color: var(--gray-md);
}
.product-img-placeholder svg { width: 56px; height: 56px; stroke: var(--gold); stroke-width: 1; fill: none; }
.product-img-placeholder span { font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gray-md); }
.product-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.product-tag {
  position: absolute;
  top: 0.75rem; left: 0.75rem;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  background: var(--gold);
  color: var(--black);
  border-radius: 1px;
}
.product-body { padding: 1.5rem; }
.product-body h4 { margin-bottom: 0.75rem; font-size: 0.95rem; }
.product-meta {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
  font-size: 0.78rem;
  color: var(--gray-dk);
}
.product-meta strong { color: var(--offblack); }
.btn-sm {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.6rem 1.25rem;
  border: 1px solid var(--gold);
  color: var(--gold);
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
  cursor: pointer;
  background: transparent;
}
.btn-sm:hover { background: var(--gold); color: var(--black); }

/* ─── CONTACT ─── */
.contact-section { background: var(--offblack); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 5rem; align-items: start; }
.contact-left h2 { color: var(--white); margin-bottom: 1rem; }
.contact-left p { color: rgba(255,255,255,0.55); margin-bottom: 2rem; }
.contact-detail { margin-bottom: 1.5rem; }
.contact-detail-label { font-size: 0.68rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--gold); margin-bottom: 0.3rem; }
.contact-detail-val { font-size: 0.95rem; color: rgba(255,255,255,0.8); }

.contact-form { display: flex; flex-direction: column; gap: 1rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label { font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.5); }
.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  font-family: var(--ff-sans);
  font-size: 0.9rem;
  color: var(--white);
  transition: border-color var(--transition);
  width: 100%;
}
.form-group select option { background: var(--offblack); }
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,0.25); }
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--gold);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-submit {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--ff-sans);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 1rem 2rem;
  background: var(--gold);
  color: var(--black);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.form-submit:hover { background: var(--gold-lt); transform: translateY(-1px); }
.form-success-msg {
  display: none;
  padding: 1rem;
  background: rgba(184,150,46,0.12);
  border: 1px solid rgba(184,150,46,0.3);
  border-radius: var(--radius);
  color: var(--gold-lt);
  font-size: 0.9rem;
  text-align: center;
}

/* ─── FOOTER ─── */
.footer {
  background: var(--black);
  padding: 4rem 0 2rem;
  border-top: 1px solid rgba(184,150,46,0.12);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand p { font-size: 0.875rem; color: rgba(255,255,255,0.4); margin-top: 1rem; max-width: 280px; line-height: 1.7; }
.footer-col h5 {
  font-family: var(--ff-sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.25rem;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col ul li a { font-size: 0.85rem; color: rgba(255,255,255,0.45); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--gold); }
.footer-contact-item { font-size: 0.85rem; color: rgba(255,255,255,0.45); line-height: 1.6; margin-bottom: 0.75rem; }
.footer-contact-item strong { color: rgba(255,255,255,0.7); display: block; font-weight: 400; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-copy { font-size: 0.78rem; color: rgba(255,255,255,0.25); letter-spacing: 0.04em; }

/* ─── PAGE HERO (inner pages) ─── */
.page-hero {
  background: var(--offblack);
  padding: 8rem 0 4rem;
  text-align: center;
}
.page-hero h1 { color: var(--white); margin-bottom: 1rem; }
.page-hero p { color: rgba(255,255,255,0.5); font-size: 1rem; }

/* ─── PRODUCTS PAGE ─── */
.products-section { background: var(--white); }
.filter-bar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}
.filter-btn {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.5rem 1.1rem;
  border: 1px solid rgba(0,0,0,0.15);
  background: none;
  color: var(--charcoal);
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover,
.filter-btn.active { background: var(--gold); border-color: var(--gold); color: var(--black); }

.product-detail-card { padding: 1.5rem; }
.product-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-top: 1rem;
  font-size: 0.78rem;
}
.product-spec { display: flex; flex-direction: column; }
.product-spec-label { color: var(--gray-dk); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.1em; }
.product-spec-val { color: var(--offblack); font-weight: 500; margin-top: 0.15rem; }

/* ─── ABOUT PAGE ─── */
.about-story { background: var(--white); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center; }
.about-img-placeholder {
  aspect-ratio: 4/5;
  background: var(--gray-lt);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
  color: var(--gray-md);
}
.about-img-placeholder svg { width: 64px; height: 64px; stroke: var(--gold); stroke-width: 0.8; fill: none; }
.about-img-placeholder p { font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; }
.about-text h2 { margin-bottom: 1.5rem; }
.about-text p { margin-bottom: 1.25rem; font-size: 0.95rem; }
.about-mission {
  background: var(--offblack);
  padding: 5rem 0;
  text-align: center;
}
.about-mission h2 { color: var(--white); margin-bottom: 1rem; }
.about-mission p { color: rgba(255,255,255,0.55); max-width: 660px; margin: 0 auto; font-size: 1.05rem; font-style: italic; }

/* ─── ANIMATIONS ─── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .why-grid { grid-template-columns: repeat(2,1fr); gap: 2.5rem 3rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
  .about-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2,1fr); gap: 2rem; }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta, .lang-switcher { display: none; }
  .hamburger { display: flex; }
  h1 { font-size: clamp(2.2rem,8vw,3.2rem); }
  h2 { font-size: clamp(1.8rem,6vw,2.4rem); }
  .section { padding: 4rem 0; }
  .why-grid { grid-template-columns: 1fr; gap: 2rem; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-accent { display: none; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .hero-btns { flex-direction: column; }
  .hero-btns .btn-primary,
  .hero-btns .btn-outline { justify-content: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 1.25rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .cats-grid { grid-template-columns: 1fr; }
}
/* ────────────────────────────────────────────────
 * HY Hardware Supplier — 升级版样式补充
 * 把这段 CSS 追加到 style.css 末尾
 * ──────────────────────────────────────────────── */

/* ─── Hero 背景图 + 半透明遮罩 ─── */
.hero-bg-image {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
  transition: opacity 0.6s ease;
  opacity: 0;
}
.hero-bg-image.has-image {
  opacity: 1;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 10, 0.6);
  z-index: 1;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 3;  /* 文字在最上层 */
}
/* 让 hero-bg、hero-accent 在背景图之下 */
.hero-bg, .hero-accent {
  z-index: 0;
}

/* ─── 分类卡片图片支持 ─── */
.cat-icon {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  transition: all 0.3s ease;
}
.cat-icon[style*="background-image"] {
  width: 100%;
  height: 180px;
  border: 1px solid var(--border);
}
.cat-icon[style*="background-image"] svg {
  display: none;
}

/* ─── 产品卡片图片优化 ─── */
.product-card .product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.product-card:hover .product-img img {
  transform: scale(1.05);
}

/* ─── 视频展示区（products.html）─── */
.product-videos-section {
  background: var(--gray-lt);
  padding: 5rem 0;
  border-top: 1px solid var(--border);
}
.product-videos-section .section-header {
  text-align: center;
  margin-bottom: 3rem;
}
.videos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}
.video-card-public {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}
.video-card-public:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.video-card-public video {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--black);
  display: block;
  object-fit: cover;
}
.video-card-public .video-info {
  padding: 1.25rem;
}
.video-card-public .video-info h4 {
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
  font-family: var(--ff-serif);
  font-weight: 400;
}
.video-card-public .video-cat {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 500;
}

/* 移动端响应式 */
@media (max-width: 768px) {
  .videos-grid {
    grid-template-columns: 1fr;
    padding: 0 1rem;
  }
  .cat-icon[style*="background-image"] {
    height: 140px;
  }
}