/* =====================================================
   AIRLISI LEATHER GOODS — Main Stylesheet (Vibrant Refresh)
   ===================================================== */

/* ===== CSS Custom Properties ===== */
:root {
  /* 主色：活力橙红 */
  --primary:       #E8440A;
  --primary-dark:  #C43808;
  --primary-light: #FF6B3D;
  --primary-bg:    #FFF1EC;

  /* 辅助色：明亮蓝绿 */
  --accent:        #0A9E8A;
  --accent-light:  #12C4AB;
  --accent-bg:     #E6FAF7;

  /* 高亮黄 */
  --yellow:        #FFB800;
  --yellow-light:  #FFD666;

  /* 中性色 */
  --dark:          #1A1A2E;
  --dark-2:        #2D2D42;
  --text:          #2D2D42;
  --text-light:    #6B7280;
  --bg:            #FFFFFF;
  --bg-alt:        #F5F8FF;
  --bg-warm:       #FFFCFA;
  --white:         #FFFFFF;
  --border:        #E8ECF4;

  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans:  'Inter', system-ui, sans-serif;

  --radius:    10px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  --shadow:    0 4px 24px rgba(28,28,46,0.08);
  --shadow-lg: 0 16px 48px rgba(28,28,46,0.14);
  --shadow-primary: 0 8px 32px rgba(232,68,10,0.25);
  --transition: 0.3s ease;

  --container: 1200px;
  --nav-h:     72px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { border: none; cursor: pointer; background: none; font-family: inherit; }

/* ===== Container ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Section Helpers ===== */
.section { padding: 96px 0; }
.section-alt { background: #F5F8FF; }

.section-header { text-align: center; margin-bottom: 56px; }
.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-bg);
  padding: 5px 16px;
  border-radius: 99px;
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  color: var(--dark);
  line-height: 1.25;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--text-light);
  max-width: 620px;
  margin: 0 auto;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: var(--transition);
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  box-shadow: var(--shadow-primary);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(232,68,10,0.38);
}
.btn-outline {
  border: 2px solid rgba(255,255,255,0.75);
  color: var(--white);
  background: rgba(255,255,255,0.08);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.2);
  border-color: var(--white);
}
.btn-full { width: 100%; justify-content: center; }

/* =====================================================
   NAVIGATION
   ===================================================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  transition: background var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(16px);
  box-shadow: 0 2px 20px rgba(28,28,46,0.1);
}
.site-header.scrolled .logo-main { color: var(--dark); }
.site-header.scrolled .logo-sub  { color: var(--primary); }
.site-header.scrolled .nav-links a { color: var(--text); }
.site-header.scrolled .nav-links a:hover { color: var(--primary); background: var(--primary-bg); }
.site-header.scrolled .hamburger span { background: var(--dark); }

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
}

.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon { font-size: 1.6rem; color: var(--primary); }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-main {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.08em;
  transition: color var(--transition);
}
.logo-sub {
  font-size: 0.58rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
}

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  color: rgba(255,255,255,0.9);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius);
  transition: var(--transition);
}
.nav-links a:hover { color: var(--white); background: rgba(255,255,255,0.12); }
.nav-cta {
  background: var(--primary) !important;
  color: var(--white) !important;
  font-weight: 600 !important;
  padding: 10px 22px !important;
  border-radius: var(--radius) !important;
  box-shadow: var(--shadow-primary);
}
.nav-cta:hover {
  background: var(--primary-dark) !important;
  transform: translateY(-1px);
}

.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--white); transition: var(--transition); border-radius: 2px;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* =====================================================
   HERO — 工匠真实图片背景
   ===================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #1a1a1a;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 30%;
  background-repeat: no-repeat;
  transform: scale(1.04);
  animation: heroZoom 14s ease-in-out infinite alternate;
}
@keyframes heroZoom {
  from { transform: scale(1.04); }
  to   { transform: scale(1.10); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  display: block;
  background: linear-gradient(
    105deg,
    rgba(15, 10, 5, 0.78) 0%,
    rgba(20, 12, 4, 0.60) 50%,
    rgba(10, 8, 4, 0.35) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: calc(var(--nav-h) + 40px);
  padding-bottom: 80px;
  max-width: 800px;
}
.hero-tag {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--primary-light);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
}
.hero-tag::before {
  content: '';
  display: block;
  width: 32px; height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 2px;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 24px;
}
.hero-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--primary-light), var(--yellow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.78);
  margin-bottom: 40px;
  max-width: 580px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 56px; }

.hero-stats {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  padding: 24px 32px;
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  width: fit-content;
  gap: 0;
}
.stat { display: flex; flex-direction: column; align-items: center; padding: 0 28px; }
.stat strong {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.stat span { font-size: 0.75rem; color: rgba(255,255,255,0.6); margin-top: 4px; white-space: nowrap; }
.stat-divider { width: 1px; height: 40px; background: rgba(255,255,255,0.12); }

.scroll-down {
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.4);
  font-size: 1.2rem;
  animation: bounce 2s infinite;
  z-index: 2;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* =====================================================
   TRUST BAR
   ===================================================== */
.trust-bar {
  background: #FFFFFF;
  padding: 18px 0;
  border-top: none;
  border-bottom: 3px solid var(--primary);
  box-shadow: 0 2px 16px rgba(28,28,46,0.06);
}
.trust-bar-inner {
  display: flex; align-items: center; gap: 32px;
  flex-wrap: wrap; justify-content: center;
}
.trust-label {
  font-size: 0.72rem; text-transform: uppercase;
  letter-spacing: 0.14em; color: var(--primary);
  font-weight: 700; white-space: nowrap;
}
.trust-items { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; justify-content: center; }
.trust-item {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.82rem; color: var(--text);
  white-space: nowrap; font-weight: 500;
}
.trust-item i { color: var(--primary); }

/* =====================================================
   ABOUT
   ===================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-visual { position: relative; }
.about-img-wrap { position: relative; }
.about-img {
  border-radius: var(--radius-lg);
  background-size: cover;
  background-position: center;
}
/* About section: 用渐变色块代替真实图片 */
.about-img-1 {
  width: 100%; height: 420px;
}

.about-img-2 {
  position: absolute;
  bottom: -40px; right: -40px;
  width: 220px; height: 200px;
  border: 6px solid var(--bg);
  box-shadow: var(--shadow-lg);
}

.about-badge {
  position: absolute;
  top: -20px; left: -20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  border-radius: var(--radius);
  padding: 16px 20px;
  text-align: center;
  box-shadow: var(--shadow-primary);
}
.about-badge strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
}
.about-badge span { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.05em; line-height: 1.3; }

.about-text { padding: 20px 0; }
.about-text .section-title { text-align: left; }
.about-text p { color: var(--text-light); margin-bottom: 16px; }
.about-text p strong { color: var(--text); }

.about-list { margin: 24px 0 32px; display: flex; flex-direction: column; gap: 12px; }
.about-list li {
  display: flex; align-items: flex-start;
  gap: 12px; font-size: 0.95rem; color: var(--text);
}
.about-list li i { color: var(--primary); margin-top: 4px; flex-shrink: 0; }

/* =====================================================
   PRODUCTS — 彩色卡片，不用真实产品图
   ===================================================== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 2px 16px rgba(28,28,46,0.06);
  transition: var(--transition);
  border: 1px solid #EDF0FA;
}
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }

/* 产品图用渐变色块+大图标代替真实图片 */
.product-img {
  height: 220px;
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}

.product-badge {
  position: absolute;
  top: 14px; left: 14px;
  background: var(--white);
  color: var(--primary);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border-radius: 99px;
  z-index: 2;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.product-body { padding: 24px; }
.product-body h3 {
  font-family: var(--font-serif);
  font-size: 1.12rem;
  color: var(--dark);
  margin-bottom: 10px;
}
.product-body p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.65;
  margin-bottom: 16px;
}
.product-specs { display: flex; flex-direction: column; gap: 7px; }
.product-specs li {
  display: flex; align-items: center;
  gap: 8px; font-size: 0.82rem; color: var(--text);
}
.product-specs li i { color: var(--primary); width: 14px; flex-shrink: 0; }

.product-card-cta {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
  display: flex; align-items: center;
  justify-content: center; min-height: 340px;
  border: none;
  position: relative;
  overflow: hidden;
}
.product-card-cta::before {
  content: '';
  position: absolute;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,68,10,0.3) 0%, transparent 70%);
  top: -80px; right: -80px;
}
.product-cta-inner { text-align: center; padding: 32px 24px; position: relative; z-index: 1; }
.product-cta-inner i { font-size: 2.8rem; color: var(--primary-light); margin-bottom: 20px; }
.product-cta-inner h3 { font-family: var(--font-serif); font-size: 1.3rem; color: var(--white); margin-bottom: 12px; }
.product-cta-inner p { font-size: 0.88rem; color: rgba(255,255,255,0.65); margin-bottom: 24px; line-height: 1.65; }

/* =====================================================
   FACTORY
   ===================================================== */
.factory-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

/* 工厂图用渐变色块 */
.factory-main-img {
  width: 100%; height: 300px;
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  background-size: cover;
  background-position: center;
}

.factory-thumb-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.factory-thumb {
  height: 100px;
  border-radius: var(--radius);
  background-size: cover;
  background-position: center;
}

.factory-capabilities { display: flex; flex-direction: column; gap: 16px; }
.capability {
  display: flex; gap: 18px; align-items: flex-start;
  padding: 18px 20px;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.capability:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 20px rgba(232,68,10,0.1);
  transform: translateX(4px);
}
.cap-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex; align-items: center; justify-content: center;
  color: var(--white); font-size: 1rem; flex-shrink: 0;
}
.cap-text h3 { font-size: 0.95rem; font-weight: 600; color: var(--dark); margin-bottom: 4px; }
.cap-text p { font-size: 0.84rem; color: var(--text-light); line-height: 1.6; }

/* =====================================================
   WHY US
   ===================================================== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.why-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid #EDF0FA;
  box-shadow: 0 2px 16px rgba(28,28,46,0.05);
  position: relative;
  transition: var(--transition);
  overflow: hidden;
}
.why-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--yellow));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.why-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.why-card:hover::before { transform: scaleX(1); }

.why-num {
  font-family: var(--font-serif);
  font-size: 4.5rem;
  font-weight: 700;
  color: #EEF2FF;
  position: absolute;
  top: 12px; right: 20px;
  line-height: 1; user-select: none;
}
.why-icon {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 16px;
  display: block;
}
.why-card h3 { font-size: 1rem; font-weight: 600; color: var(--dark); margin-bottom: 10px; }
.why-card p { font-size: 0.88rem; color: var(--text-light); line-height: 1.7; }

/* =====================================================
   TESTIMONIALS
   ===================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid #EDF0FA;
  box-shadow: 0 2px 16px rgba(28,28,46,0.06);
  transition: var(--transition);
  position: relative;
}
.testimonial-card::before {
  content: '\201C';
  position: absolute;
  top: 16px; left: 24px;
  font-family: var(--font-serif);
  font-size: 5rem;
  color: var(--primary-bg);
  line-height: 1;
}
.testimonial-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.stars { color: var(--yellow); font-size: 0.9rem; margin-bottom: 16px; display: flex; gap: 3px; }
.testimonial-card p {
  font-size: 0.93rem; color: var(--text);
  line-height: 1.75; font-style: italic; margin-bottom: 20px;
  position: relative; z-index: 1;
}
.testimonial-card footer { display: flex; flex-direction: column; gap: 2px; }
.testimonial-card footer strong { font-size: 0.9rem; color: var(--dark); }
.testimonial-card footer span { font-size: 0.8rem; color: var(--text-light); }

/* =====================================================
   PROCESS
   ===================================================== */
.process-steps {
  display: flex; align-items: flex-start;
  gap: 8px; flex-wrap: wrap; justify-content: center;
}
.process-step {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  border: 1px solid var(--border);
  flex: 1; min-width: 180px; max-width: 240px;
  transition: var(--transition);
}
.process-step:hover { border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-4px); }

.step-num {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  font-family: var(--font-serif);
  font-size: 1.4rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
  box-shadow: var(--shadow-primary);
}
.process-step h3 { font-size: 0.95rem; font-weight: 600; color: var(--dark); margin-bottom: 8px; }
.process-step p { font-size: 0.83rem; color: var(--text-light); line-height: 1.65; }

.process-arrow {
  color: var(--primary);
  font-size: 1.4rem;
  align-self: center;
  padding: 0 4px;
  margin-top: -24px;
}

/* =====================================================
   CONTACT
   ===================================================== */
.contact { background: #FFFFFF; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 72px;
  align-items: start;
}

.contact-info .section-title { text-align: left; margin-bottom: 16px; }
.contact-info > p { color: var(--text-light); margin-bottom: 36px; }

.contact-details { display: flex; flex-direction: column; gap: 20px; }
.contact-item { display: flex; align-items: flex-start; gap: 16px; }
.contact-item > i {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; flex-shrink: 0;
  box-shadow: var(--shadow-primary);
}
.contact-item > div { display: flex; flex-direction: column; gap: 2px; }
.contact-item strong { font-size: 0.85rem; color: var(--dark); font-weight: 600; }
.contact-item a, .contact-item span { font-size: 0.9rem; color: var(--text-light); }
.contact-item a:hover { color: var(--primary); }

.contact-form-wrap {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 44px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-group label { font-size: 0.83rem; font-weight: 600; color: var(--dark); }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.9rem; color: var(--text);
  background: var(--bg-alt);
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(232,68,10,0.1);
  background: var(--white);
}
.form-group textarea { resize: vertical; }
.form-note { margin-top: 12px; font-size: 0.78rem; color: var(--text-light); text-align: center; }

.form-success { text-align: center; padding: 48px 32px; }
.form-success i { font-size: 3rem; color: #22c55e; margin-bottom: 16px; }
.form-success h3 { font-family: var(--font-serif); font-size: 1.4rem; margin-bottom: 8px; }
.form-success p { color: var(--text-light); }

/* =====================================================
   FOOTER
   ===================================================== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding: 72px 24px 48px;
}

.logo-light .logo-main { color: var(--white); }
.logo-light .logo-sub  { color: var(--primary-light); }
.footer-brand .logo { margin-bottom: 20px; }
.footer-brand p { font-size: 0.88rem; line-height: 1.7; }
.footer-cn { margin-top: 8px; font-size: 0.82rem; color: rgba(255,255,255,0.35); }

.footer-links h4, .footer-contact h4 {
  font-size: 0.82rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--white); margin-bottom: 20px;
}
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 0.88rem; color: rgba(255,255,255,0.55); transition: var(--transition); }
.footer-links a:hover { color: var(--primary-light); }

.footer-contact p {
  display: flex; align-items: flex-start;
  gap: 10px; font-size: 0.88rem; margin-bottom: 12px;
}
.footer-contact i { color: var(--primary-light); margin-top: 2px; flex-shrink: 0; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.07);
  padding: 20px 0;
}
.footer-bottom .container {
  display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: 8px;
}
.footer-bottom p { font-size: 0.8rem; color: rgba(255,255,255,0.35); }

/* =====================================================
   BACK TO TOP
   ===================================================== */
.back-to-top {
  position: fixed;
  bottom: 32px; right: 32px;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-primary);
  opacity: 0; transform: translateY(16px);
  transition: var(--transition);
  z-index: 999; pointer-events: none;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(232,68,10,0.45); }

/* =====================================================
   FLOAT CONTACT BUTTONS
   ===================================================== */
.float-contact {
  position: fixed;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 14px;
  z-index: 998;
}

.float-btn {
  position: relative;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--white);
  box-shadow: 0 6px 24px rgba(0,0,0,0.22);
  transition: var(--transition);
  cursor: pointer;
}
.float-btn:hover {
  transform: translateY(-4px) scale(1.1);
  box-shadow: 0 10px 32px rgba(0,0,0,0.3);
}

/* WhatsApp 绿色 */
.float-whatsapp {
  background: linear-gradient(135deg, #25D366, #1DA851);
}
.float-whatsapp:hover {
  box-shadow: 0 8px 28px rgba(37,211,102,0.5);
}

/* 邮箱 主色橙红 */
.float-email {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
}
.float-email:hover {
  box-shadow: 0 8px 28px rgba(232,68,10,0.45);
}

/* 悬停提示文字 */
.float-tooltip {
  position: absolute;
  right: 62px;
  background: var(--dark);
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 6px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translateX(8px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.float-tooltip::after {
  content: '';
  position: absolute;
  right: -6px;
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: var(--dark);
  border-right: none;
}
.float-btn:hover .float-tooltip {
  opacity: 1;
  transform: translateX(0);
}

/* WhatsApp 脉冲动效 */
.float-whatsapp::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: rgba(37,211,102,0.4);
  animation: ripple 2.5s ease-out infinite;
}
@keyframes ripple {
  0%   { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.8); opacity: 0; }
}

@media (max-width: 768px) {
  .float-contact { right: 14px; top: 50%; transform: translateY(-50%); }
  .float-btn { width: 54px; height: 54px; font-size: 1.5rem; }
  .float-tooltip { display: none; }
}

/* =====================================================
   ANIMATIONS
   ===================================================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* =====================================================
   RESPONSIVE
   ===================================================== */
@media (max-width: 1024px) {
  .about-img-2 { display: none; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 24px; gap: 4px;
    transform: translateY(-110%);
    opacity: 0;
    transition: transform var(--transition), opacity var(--transition);
    pointer-events: none;
    box-shadow: 0 8px 32px rgba(28,28,46,0.12);
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links a { color: var(--text); padding: 14px; width: 100%; text-align: center; }
  .nav-links a:hover { color: var(--primary); background: var(--primary-bg); }
  .hamburger { display: flex; }

  .hero-stats { flex-direction: column; gap: 16px; padding: 20px 24px; }
  .stat-divider { width: 40px; height: 1px; }
  .stat { flex-direction: row; gap: 12px; }

  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-img-1 { height: 260px; }
  .factory-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .form-row { grid-template-columns: 1fr; }
  .process-steps { flex-direction: column; align-items: center; }
  .process-arrow { transform: rotate(90deg); margin-top: 0; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom .container { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .section { padding: 64px 0; }
  .hero-actions { flex-direction: column; }
  .contact-form-wrap { padding: 24px 20px; }
  .trust-bar-inner { flex-direction: column; gap: 16px; }
}