/* ── SUILUN HARDWARE — SHARED STYLES ─────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --orange:     #E8640A;
  --orange-d:   #c8540a;
  --orange-l:   #F4762A;
  --orange-pale:#FFF3EB;
  --dark:       #1A1A1A;
  --dark2:      #2D2D2D;
  --gray-700:   #4A4A4A;
  --gray-500:   #737373;
  --gray-400:   #9A9A9A;
  --gray-200:   #E8E8E8;
  --gray-100:   #F4F4F2;
  --gray-50:    #FAFAF8;
  --white:      #FFFFFF;
  --border:     #E2E2E0;
  --r:          10px;
  --r2:         18px;
  --shadow:     0 2px 16px rgba(0,0,0,0.08);
  --shadow-lg:  0 12px 48px rgba(0,0,0,0.14);
  --font:       'Inter', system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--dark);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* ── TYPOGRAPHY ─────────────────────────────── */
.eyebrow {
  display: inline-block;
  font-size: 11px; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--orange);
  margin-bottom: 12px;
}
h1 { font-size: clamp(40px,5.5vw,80px); font-weight: 900; letter-spacing: -0.035em; line-height: 1.0; }
h2 { font-size: clamp(30px,3.8vw,52px); font-weight: 800; letter-spacing: -0.025em; line-height: 1.1; }
h3 { font-size: clamp(18px,2.2vw,24px); font-weight: 700; letter-spacing: -0.01em; line-height: 1.3; }
.lead { font-size: clamp(16px,1.8vw,19px); color: var(--gray-500); line-height: 1.7; }

/* ── LAYOUT ─────────────────────────────────── */
.wrap { max-width: 1240px; margin: 0 auto; padding: 0 40px; }
section { padding: 104px 0; }
.section-head { margin-bottom: 64px; }
@media(max-width:640px) {
  .wrap { padding: 0 20px; }
  section { padding: 72px 0; }
  .section-head { margin-bottom: 44px; }
}

/* ── NAV ─────────────────────────────────────── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 999;
  background: rgba(26,26,26,0.95);
  backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  transition: background 0.3s;
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-img { height: 52px; width: auto; display: block; }
.logo-text { display: flex; flex-direction: column; gap: 2px; }
.logo-tagline { font-size: 7px; font-weight: 700; letter-spacing: 0.13em; color: rgba(255,255,255,0.42); text-transform: uppercase; line-height: 1; }
/* factory photo strip */
.factory-photos-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  height: 220px;
  overflow: hidden;
}
.factory-photo-cell {
  overflow: hidden;
  position: relative;
}
.factory-photo-cell img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s ease;
}
.factory-photo-cell:hover img { transform: scale(1.06); }
@media(max-width:768px) {
  .factory-photos-strip { grid-template-columns: repeat(2,1fr); height: 320px; }
}
.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-menu a {
  padding: 8px 16px; border-radius: 8px;
  font-size: 13.5px; font-weight: 500; color: rgba(255,255,255,0.6);
  transition: all 0.2s;
}
.nav-menu a:hover, .nav-menu a.active { color: white; background: rgba(255,255,255,0.08); }
.nav-cta {
  background: var(--orange) !important;
  color: white !important;
  font-weight: 700 !important;
  padding: 9px 22px !important;
}
.nav-cta:hover { background: var(--orange-l) !important; }
@media(max-width:768px) { .nav-menu { display: none; } }

/* ── BUTTONS ─────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: var(--r);
  font-size: 14px; font-weight: 700; cursor: pointer;
  transition: all 0.2s; border: none;
}
.btn-primary { background: var(--orange); color: white; }
.btn-primary:hover { background: var(--orange-d); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(232,100,10,0.35); }
.btn-outline {
  background: transparent; color: white;
  border: 1.5px solid rgba(255,255,255,0.25);
}
.btn-outline:hover { border-color: white; background: rgba(255,255,255,0.08); }
.btn-outline-dark {
  background: transparent; color: var(--dark);
  border: 1.5px solid var(--border);
}
.btn-outline-dark:hover { border-color: var(--orange); color: var(--orange); }

/* ── ORANGE RULE ─────────────────────────────── */
.orange-rule { height: 3px; background: linear-gradient(90deg, var(--orange), var(--orange-l), #FFB347); }

/* ── FOOTER ──────────────────────────────────── */
footer {
  background: var(--dark); border-top: 1px solid rgba(255,255,255,0.07);
  padding: 56px 0 32px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px;
  margin-bottom: 48px;
}
@media(max-width:900px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media(max-width:560px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand .logo-name { font-size: 18px; margin-bottom: 16px; display: block; }
.footer-brand p { font-size: 14px; color: rgba(255,255,255,0.35); line-height: 1.7; max-width: 260px; }
.footer-col h4 { font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.3); margin-bottom: 20px; }
.footer-col a { display: block; font-size: 14px; color: rgba(255,255,255,0.5); margin-bottom: 12px; transition: color 0.2s; }
.footer-col a:hover { color: var(--orange); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.07);
  padding-top: 28px;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.2); }

/* ── REVEAL ANIMATION ────────────────────────── */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.d1 { transition-delay: 0.08s; } .d2 { transition-delay: 0.16s; } .d3 { transition-delay: 0.24s; } .d4 { transition-delay: 0.32s; }

/* ── SHARED CARD ─────────────────────────────── */
.card {
  background: white; border: 1.5px solid var(--border);
  border-radius: var(--r2); overflow: hidden;
  transition: all 0.25s;
}
.card:hover { border-color: var(--orange); box-shadow: var(--shadow-lg); transform: translateY(-3px); }