/* ==========================================================================
   四川万康节能环保科技有限公司 (SCAF®) - 极简高质感工业设计系统
   Minimalist Clean-Industrial Design (简洁、大气、留白、专业)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Brand Colors - Minimalist Industrial Green & Slate */
  --primary-green: #15803d;
  --primary-green-hover: #166534;
  --primary-green-light: #22c55e;
  --primary-green-soft: #f0fdf4;
  
  --accent-orange: #ea580c;
  --accent-orange-hover: #c2410c;

  --dark-text: #1e293b;
  --main-text: #334155;
  --muted-text: #64748b;
  --light-text: #94a3b8;

  --bg-body: #f8fafc;
  --bg-white: #ffffff;
  --bg-gray: #f1f5f9;

  --border-color: #e2e8f0;
  --border-light: #f1f5f9;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 10px 20px -3px rgba(0, 0, 0, 0.08);

  --transition: all 0.25s ease;
}

/* Reset & Basics */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-body);
  color: var(--main-text);
  line-height: 1.65;
}

/* Custom Selection & Scrollbar */
::selection {
  background-color: #dcfce7;
  color: var(--primary-green);
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

:focus-visible {
  outline: 2px solid var(--primary-green);
  outline-offset: 2px;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s ease;
}

/* Containers & Sections */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 60px 0;
  scroll-margin-top: 50px;
}

.hero-clean-section,
.category-strip,
.clean-footer {
  scroll-margin-top: 50px;
}

.section-white {
  background-color: var(--bg-white);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

/* Section Header (Clean & Centered) */
.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-title {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--dark-text);
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.section-title span {
  color: var(--primary-green);
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--muted-text);
}

.section-divider {
  width: 40px;
  height: 3px;
  background-color: var(--primary-green);
  margin: 12px auto 0;
  border-radius: 2px;
}

/* Clean Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
}

.btn-green {
  background: var(--primary-green);
  color: #ffffff;
}

.btn-green:hover {
  background: var(--primary-green-hover);
}

.btn-orange {
  background: var(--accent-orange);
  color: #ffffff;
}

.btn-orange:hover {
  background: var(--accent-orange-hover);
}

.btn-outline {
  border: 1px solid var(--border-color);
  background: #ffffff;
  color: var(--main-text);
}

.btn-outline:hover {
  border-color: var(--primary-green);
  color: var(--primary-green);
}

/* ==========================================================================
   1. Clean Top Header
   ========================================================================== */
.top-header {
  background: #ffffff;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-color);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-box {
  display: flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
}

.brand-logo-img {
  height: 50px;
  width: auto;
  max-width: 135px;
  object-fit: contain;
  transition: transform 0.2s ease;
}

.brand-box:hover .brand-logo-img {
  transform: scale(1.02);
}

.brand-divider {
  width: 1px;
  height: 46px;
  background: #e2e8f0;
}

.brand-titles {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.brand-main-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary-green);
  line-height: 1.25;
  letter-spacing: 0.5px;
}

.brand-sub-title {
  font-size: 0.82rem;
  color: var(--muted-text);
  margin-top: 2px;
}

.header-contact {
  display: flex;
  align-items: center;
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.contact-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--primary-green-soft);
  color: var(--primary-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.contact-meta {
  display: flex;
  flex-direction: column;
}

.contact-meta-label {
  font-size: 0.75rem;
  color: var(--muted-text);
}

.contact-meta-phone {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary-green);
  line-height: 1.1;
  font-family: 'Noto Sans SC', sans-serif;
}

/* ==========================================================================
   2. Clean Minimal Navigation
   ========================================================================== */
.main-navbar {
  background: var(--primary-green);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-menu {
  display: flex;
  list-style: none;
}

.nav-item a {
  display: block;
  padding: 13px 22px;
  color: #ffffff;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
}

.nav-item a:hover,
.nav-item.active a {
  background: var(--primary-green-hover);
}

.nav-search {
  display: flex;
  align-items: center;
  height: 44px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: var(--radius-sm);
  background: #ffffff;
}

.nav-search:focus-within {
  outline: 2px solid #ffffff;
  outline-offset: 2px;
}

.nav-search input {
  width: 178px;
  height: 42px;
  padding: 0 12px;
  border: none;
  outline: none;
  font-size: 0.85rem;
  border-radius: 0;
}

.nav-search button {
  width: 44px;
  height: 42px;
  min-height: 42px;
  padding: 0;
  border: none;
  background: var(--accent-orange);
  color: #ffffff;
  font-size: 0.95rem;
  cursor: pointer;
  border-radius: 0;
  transition: var(--transition);
}

.nav-search button:hover {
  background: var(--accent-orange-hover);
}

/* ==========================================================================
   3. Simplified Hero Banner
   ========================================================================== */
.hero-clean-section {
  background: #ffffff;
  padding: 30px 0 40px;
  border-bottom: 1px solid var(--border-color);
}

.hero-clean-banner {
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  background: #000;
  position: relative;
}

.hero-clean-img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  display: block;
}

.hero-clean-text-bar {
  background: #ffffff;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid var(--border-color);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.hero-tagline h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--dark-text);
}

.hero-tagline p {
  font-size: 0.9rem;
  color: var(--muted-text);
  margin-top: 2px;
}

/* ==========================================================================
   4. Four Category Quick Navigation
   ========================================================================== */
.category-strip {
  padding: 36px 0;
  background: var(--bg-body);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.category-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  transition: var(--transition);
}

.category-item:hover {
  border-color: var(--primary-green);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.cat-icon-frame {
  width: 58px;
  height: 58px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: var(--bg-gray);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.cat-icon-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.cat-info h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark-text);
  margin-bottom: 2px;
}

.cat-info p {
  font-size: 0.78rem;
  color: var(--muted-text);
}

/* ==========================================================================
   5. Clean Product Showcase (简洁产品卡片)
   ========================================================================== */
.product-filter-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.filter-tab {
  padding: 8px 20px;
  border: 1px solid var(--border-color);
  background: #ffffff;
  border-radius: var(--radius-sm);
  color: var(--main-text);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.filter-tab.active,
.filter-tab:hover {
  background: var(--primary-green);
  border-color: var(--primary-green);
  color: #ffffff;
}

.clean-products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* React Bits: Spotlight Card Effect & Scale Hover */
.clean-p-card {
  position: relative;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s ease, border-color 0.35s ease;
  display: flex;
  flex-direction: column;
  transform-origin: center center;
}

.clean-p-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: inherit;
  background: radial-gradient(
    400px circle at var(--mouse-x, -999px) var(--mouse-y, -999px),
    rgba(21, 128, 61, 0.1),
    transparent 70%
  );
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 1;
}

.clean-p-card:hover::before {
  opacity: 1;
}

/* 鼠标放上去 产品卡片整体放大膨胀浮现 */
.clean-p-card:hover {
  border-color: var(--primary-green) !important;
  transform: translateY(-10px) scale(1.045) !important;
  box-shadow: 0 24px 48px -10px rgba(21, 128, 61, 0.22), 0 10px 20px rgba(0, 0, 0, 0.07) !important;
  z-index: 10 !important;
}

.clean-p-thumb {
  height: 210px;
  background: #ffffff;
  border-bottom: 1px solid var(--border-light);
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.clean-p-thumb img,
.p-custom-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.clean-p-card:hover .p-custom-img,
.clean-p-card:hover .clean-p-thumb img {
  transform: scale(1.10) !important;
}

.p-clean-placeholder {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  text-align: center;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.clean-p-card:hover .p-clean-placeholder {
  transform: scale(1.08) !important;
}

.p-clean-placeholder i {
  font-size: 2.8rem;
}

.p-clean-placeholder span {
  font-size: 0.8rem;
  font-weight: 700;
}

/* News Section Cards */
.news-clean-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-clean-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s ease, border-color 0.35s ease;
  transform-origin: center center;
}

/* 新闻卡片 鼠标放上去 整体放大浮动 */
.news-clean-card:hover {
  transform: translateY(-10px) scale(1.045) !important;
  box-shadow: 0 24px 48px -10px rgba(15, 23, 42, 0.18), 0 10px 20px rgba(0, 0, 0, 0.07) !important;
  border-color: var(--primary-green-light) !important;
  z-index: 10 !important;
}

.news-img-box {
  width: 100%;
  height: 180px;
  background: #f1f5f9;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.news-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.news-clean-card:hover .news-cover-img {
  transform: scale(1.10) !important;
}

.news-placeholder-box {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #f0fdf4 0%, #e2e8f0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-green);
  font-size: 2.5rem;
}

.news-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.news-cat-pill {
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 4px;
  background: var(--primary-green-soft);
  color: var(--primary-green);
}

.news-date-text {
  font-size: 0.78rem;
  color: var(--muted-text);
}

.news-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark-text);
  margin-bottom: 8px;
  line-height: 1.4;
}

.news-card-summary {
  font-size: 0.85rem;
  color: var(--muted-text);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}

.news-read-more {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-green);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.news-read-more:hover {
  color: var(--primary-green-hover);
}

.hero-clean-placeholder-box {
  width: 100%;
  height: 320px;
  background: linear-gradient(135deg, #15803d 0%, #0f2418 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  padding: 30px;
  text-align: center;
}

.hero-clean-placeholder-box i {
  font-size: 3.5rem;
  color: #4ade80;
  margin-bottom: 12px;
}

.about-clean-fallback-box {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #1e293b, #0f172a);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  padding: 30px;
  text-align: center;
}

.about-clean-fallback-box i {
  font-size: 3.2rem;
  color: #4ade80;
  margin-bottom: 12px;
}

.admin-header-link {
  font-size: 0.8rem;
  color: var(--muted-text);
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px dashed var(--border-color);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}

.admin-header-link:hover {
  border-color: var(--primary-green);
  color: var(--primary-green);
  background: var(--primary-green-soft);
}

.clean-p-body {
  padding: 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.clean-p-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark-text);
  margin-bottom: 8px;
  text-align: center;
  min-height: 24px;
}

.clean-p-desc {
  font-size: 0.82rem;
  color: var(--muted-text);
  line-height: 1.5;
  margin-bottom: 14px;
  flex: 1;
  text-align: justify;
}

.clean-p-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 10px;
  border-top: 1px solid var(--border-light);
}

.clean-p-action-btn {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--primary-green);
  cursor: pointer;
  border: none;
  background: none;
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.clean-p-action-btn:hover {
  color: var(--primary-green-hover);
}

.clean-p-inquiry {
  padding: 4px 10px;
  background: var(--accent-orange);
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 3px;
  border: none;
  cursor: pointer;
}

.clean-p-inquiry:hover {
  background: var(--accent-orange-hover);
}

/* ==========================================================================
   6. Clean About Us & Factory Introduction
   ========================================================================== */
.about-clean-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 36px;
  align-items: center;
}

.about-clean-content h3 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--dark-text);
  margin-bottom: 14px;
}

.about-clean-content p {
  font-size: 0.92rem;
  color: var(--main-text);
  line-height: 1.8;
  margin-bottom: 14px;
  text-align: justify;
}

.about-clean-points {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 20px 0 24px;
}

.point-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--dark-text);
}

.point-item i {
  color: var(--primary-green);
  font-size: 1rem;
}

.about-clean-photo {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  height: 320px;
}

.about-clean-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ==========================================================================
   7. Application Scenarios
   ========================================================================== */
.scenario-clean-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.scenario-clean-box {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s ease, border-color 0.35s ease;
  transform-origin: center center;
}

.scenario-clean-box:hover {
  border-color: var(--primary-green);
  transform: translateY(-6px) scale(1.03);
  box-shadow: 0 16px 32px rgba(21, 128, 61, 0.14);
}

.scenario-clean-box i {
  font-size: 1.6rem;
  color: var(--primary-green);
  margin-bottom: 10px;
  display: inline-block;
}

.scenario-clean-box h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark-text);
  margin-bottom: 6px;
}

.scenario-clean-box p {
  font-size: 0.85rem;
  color: var(--muted-text);
  line-height: 1.5;
}

/* ==========================================================================
   8. Simplified Quick Quote Strip
   ========================================================================== */
.quote-clean-strip {
  background: var(--primary-green);
  color: #ffffff;
  padding: 36px 0;
  border-radius: var(--radius-md);
  margin-bottom: 60px;
}

.quote-strip-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.quote-strip-text h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.quote-strip-text p {
  font-size: 0.9rem;
  color: #dcfce7;
}

/* ==========================================================================
   9. Clean Footer & Contact Info
   ========================================================================== */
.clean-footer {
  background: #1e293b;
  color: #cbd5e1;
  padding: 48px 0 24px;
  border-top: 3px solid var(--primary-green);
}

.footer-clean-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 0.8fr;
  gap: 36px;
  margin-bottom: 36px;
}

.footer-clean-brand h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
}

.footer-clean-brand p {
  font-size: 0.85rem;
  color: #94a3b8;
  line-height: 1.7;
}

.footer-clean-col h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 14px;
}

.footer-clean-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-clean-links a {
  font-size: 0.85rem;
  color: #94a3b8;
  transition: var(--transition);
}

.footer-clean-links a:hover {
  color: #ffffff;
}

.footer-clean-qr {
  text-align: center;
}

.footer-clean-qr img {
  width: 100px;
  height: 100px;
  object-fit: contain;
  background: #ffffff;
  padding: 4px;
  border-radius: 4px;
  margin-bottom: 6px;
}

.footer-clean-bottom {
  border-top: 1px solid #334155;
  padding-top: 20px;
  text-align: center;
  font-size: 0.8rem;
  color: #64748b;
}

/* ==========================================================================
   10. Minimal Floating Customer Service Bar
   ========================================================================== */
.floating-side-bar {
  position: fixed;
  right: 0;
  top: 55%;
  transform: translateY(-50%);
  z-index: 999;
  display: flex;
  flex-direction: column;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-right: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border-radius: 6px 0 0 6px;
  overflow: hidden;
}

.floating-item {
  width: 52px;
  height: 52px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--main-text);
  text-decoration: none;
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
  cursor: pointer;
}

.floating-item i {
  font-size: 1.15rem;
  margin-bottom: 2px;
  color: var(--primary-green);
}

.floating-item:hover {
  background: var(--primary-green);
  color: #ffffff;
}

.floating-item:hover i {
  color: #ffffff;
}

.floating-item.top-btn {
  border-bottom: none;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 28px;
  max-width: 440px;
  width: 90%;
  position: relative;
  box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: none;
  border: none;
  font-size: 1.3rem;
  color: var(--muted-text);
  cursor: pointer;
}

/* Responsive Design (Mobile & Tablet Optimization) */
@media (max-width: 1024px) {
  .clean-products-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .about-clean-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .quote-strip-inner {
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }
  .footer-clean-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }
}

@media (max-width: 768px) {
  /* Header & Brand */
  .header-inner {
    flex-direction: column;
    gap: 10px;
    align-items: center;
    text-align: center;
    padding: 10px 0;
  }
  .brand-box {
    justify-content: center;
    gap: 12px;
  }
  .brand-logo-img {
    height: 52px;
  }
  .brand-divider {
    height: 38px;
  }
  .brand-main-title {
    font-size: 1.1rem;
    text-align: left;
  }
  .brand-sub-title {
    font-size: 0.72rem;
    text-align: left;
  }
  .header-contact {
    width: 100%;
    justify-content: center;
    gap: 12px;
  }
  .contact-meta {
    text-align: left;
  }
  .contact-meta-phone {
    font-size: 1.05rem;
  }

  /* Navigation: Touch-Friendly Scroll Bar */
  .nav-container {
    flex-direction: column;
    padding: 0;
  }
  .nav-menu {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    width: 100%;
    scrollbar-width: none;
    padding: 4px 8px;
  }
  .nav-menu::-webkit-scrollbar {
    display: none;
  }
  .nav-item {
    flex-shrink: 0;
  }
  .nav-item a {
    padding: 10px 14px;
    font-size: 0.88rem;
    white-space: nowrap;
  }
  .nav-search {
    display: none; /* Hide top search bar on mobile to keep navbar ultra-clean */
  }

  /* Hero Section */
  .hero-clean-placeholder-box {
    padding: 30px 16px;
    min-height: 180px;
  }
  .hero-clean-placeholder-box h2 {
    font-size: 1.25rem !important;
  }
  .hero-clean-placeholder-box p {
    font-size: 0.85rem !important;
  }
  .hero-clean-text-bar {
    flex-direction: column;
    text-align: center;
    gap: 14px;
    padding: 16px;
  }
  .hero-tagline h2 {
    font-size: 1.15rem;
  }
  .hero-tagline p {
    font-size: 0.82rem;
  }

  /* Category Quick Entry */
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .category-item {
    padding: 12px 10px;
    gap: 10px;
  }
  .cat-icon-frame {
    width: 42px;
    height: 42px;
  }
  .cat-icon-frame i {
    font-size: 1.3rem !important;
  }
  .cat-info h3 {
    font-size: 0.92rem;
  }
  .cat-info p {
    font-size: 0.72rem;
  }

  /* Filter Tabs */
  .product-filter-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    justify-content: flex-start;
    padding-bottom: 6px;
    scrollbar-width: none;
  }
  .product-filter-tabs::-webkit-scrollbar {
    display: none;
  }
  .filter-tab {
    flex-shrink: 0;
    padding: 6px 14px;
    font-size: 0.82rem;
    white-space: nowrap;
  }

  /* Products Grid */
  .clean-products-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .clean-p-card {
    padding: 12px;
  }
  .clean-p-img-box {
    height: 120px;
  }
  .clean-p-title {
    font-size: 0.92rem;
  }
  .clean-p-desc {
    font-size: 0.75rem;
    margin-bottom: 8px;
  }
  .clean-p-btn {
    padding: 5px 8px;
    font-size: 0.75rem;
  }

  /* Scenarios Grid */
  .scenario-clean-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .scenario-clean-box {
    padding: 18px;
  }

  /* Footer */
  .footer-clean-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    text-align: center;
  }
  .footer-clean-links {
    display: inline-block;
    text-align: center;
  }
  .footer-clean-qr {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  /* Section Padding */
  .section {
    padding: 36px 0;
  }
  .section-title {
    font-size: 1.5rem;
  }
  .section-subtitle {
    font-size: 0.85rem;
  }

  /* Floating Customer Service on Mobile */
  .floating-side-bar {
    right: 12px;
    bottom: 20px;
    gap: 6px;
  }
  .floating-item {
    width: 42px;
    height: 42px;
    font-size: 0.65rem;
  }
  .floating-item i {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .clean-products-grid {
    grid-template-columns: 1fr;
  }
  .category-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   React Bits: High-End UI Animations & Motion Effects
   ========================================================================== */

/* 1. ShinyText (流光扫光金属质感动效) */
.shiny-text {
  background: linear-gradient(
    120deg,
    rgba(255, 255, 255, 0) 25%,
    rgba(255, 255, 255, 0.85) 50%,
    rgba(255, 255, 255, 0) 75%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  display: inline-block;
  animation: shiny-sweep 4s infinite linear;
}

@keyframes shiny-sweep {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

/* 2. Shiny Badge (发光标签) */
.shiny-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: #f0fdf4;
  color: var(--primary-green);
  border: 1px solid #bbf7d0;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
  overflow: hidden;
}

.shiny-badge::after {
  content: '';
  position: absolute;
  top: 0; left: -100%; width: 60%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.7), transparent);
  transform: skewX(-25deg);
  animation: badge-shine 3s infinite;
}

@keyframes badge-shine {
  0% { left: -100%; }
  40% { left: 150%; }
  100% { left: 150%; }
}

/* 3. Stats Counter Grid (数据平滑递增看板) */
.stats-counter-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.stat-counter-card {
  background: #ffffff;
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  text-align: center;
  transition: var(--transition);
}

.stat-counter-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-green);
  box-shadow: var(--shadow-hover);
}

.stat-counter-num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary-green);
  line-height: 1;
  font-family: 'Noto Sans SC', sans-serif;
  margin-bottom: 6px;
}

.stat-unit {
  font-size: 1.3rem;
  font-weight: 700;
  margin-left: 2px;
  color: var(--accent-orange);
}

.stat-counter-label {
  font-size: 0.82rem;
  color: var(--muted-text);
  font-weight: 600;
}

@media (max-width: 768px) {
  .stats-counter-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .stat-counter-num {
    font-size: 1.8rem;
  }
}

/* 4. Products View More Button & Bar */
.products-more-bar {
  text-align: center;
  margin-top: 40px;
}

.btn-view-more {
  padding: 14px 38px;
  font-size: 1rem;
  font-weight: 700;
  border-radius: 30px;
  box-shadow: 0 4px 16px rgba(21, 128, 61, 0.25);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.btn-view-more:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 24px rgba(21, 128, 61, 0.35);
  background: var(--primary-green-hover);
}

.btn-view-more i {
  transition: transform 0.25s ease;
}

.btn-view-more:hover i {
  transform: translateX(5px);
}

/* 5. ScrollReveal Animations (滚动平滑渐入动效) */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* 6. Hero Dynamic Canvas */
.hero-particles-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 5;
}

/* 7. React Bits 3D Interactive Card Stack (层叠画廊卡片堆) */
.about-stack-gallery {
  position: relative;
  width: 100%;
  height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1200px;
  user-select: none;
}

.about-stack-cards-wrap {
  position: relative;
  width: 90%;
  height: 310px;
  transform-style: preserve-3d;
}

.about-stack-card {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.22);
  border: 1.5px solid rgba(255, 255, 255, 0.22);
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease, box-shadow 0.35s ease;
  background: #0f172a !important; /* 100% solid dark opaque */
  transform-origin: center center;
  backface-visibility: hidden;
}

/* 仅当前正面置顶卡片在鼠标悬停时整体平滑放大 */
.about-stack-card.is-front:hover {
  transform: translate3d(0px, -6px, 30px) rotate(0deg) scale(1.07) !important;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.45), 0 0 0 1.5px rgba(255, 255, 255, 0.35) !important;
  z-index: 20 !important;
}

.about-stack-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.about-stack-fallback-card {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 30px;
  text-align: center;
  color: #ffffff;
  position: relative;
  background: #0f172a; /* 100% solid opaque */
}

.about-stack-fallback-card i {
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.about-stack-card:hover .about-stack-fallback-card i {
  transform: scale(1.18);
}

.about-stack-card-badge {
  position: absolute;
  top: 14px;
  left: 16px;
  background: rgba(15, 23, 42, 0.78);
  backdrop-filter: blur(8px);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  z-index: 5;
}

.about-stack-card-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 28px 18px 14px;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.4) 60%, transparent 100%);
  color: #ffffff;
  font-size: 0.88rem;
  font-weight: 600;
  z-index: 5;
  text-align: left;
}

/* ==========================================================================
   2026 usability and responsive refinement
   ========================================================================== */
.mobile-nav-toggle {
  display: none;
}

.hero-clean-placeholder-box h1 {
  max-width: 18ch;
  margin: 0 0 10px;
  font-size: clamp(2rem, 4vw, 3.35rem);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.hero-clean-placeholder-box p {
  max-width: 66ch;
  line-height: 1.8;
}

.btn,
.filter-tab,
.nav-search button,
.floating-item,
.modal-close {
  min-height: 44px;
}

.clean-p-card {
  color: inherit;
}

.clean-p-card:hover,
.news-clean-card:hover {
  transform: translateY(-6px) !important;
}

.floating-item {
  appearance: none;
  border: 0;
  border-bottom: 1px solid var(--border-color);
  background: #fff;
  font-family: inherit;
}

.modal-close {
  width: 44px;
  height: 44px;
  top: 6px;
  right: 6px;
}

@media (max-width: 768px) {
  html {
    scroll-padding-top: 58px;
  }

  body {
    overflow-x: clip;
    padding-bottom: 66px;
  }

  .container {
    padding-inline: 16px;
  }

  .top-header {
    padding: 10px 0;
  }

  .header-inner {
    flex-direction: row;
    gap: 10px;
    padding-block: 0;
    text-align: left;
  }

  .brand-box {
    min-width: 0;
    flex: 1;
    justify-content: flex-start;
    gap: 10px;
  }

  .brand-logo-img {
    width: 82px;
    height: auto;
    flex: 0 0 auto;
  }

  .brand-divider {
    height: 34px;
  }

  .brand-titles {
    min-width: 0;
  }

  .brand-main-title {
    overflow: hidden;
    font-size: 0.9rem;
    line-height: 1.3;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .brand-sub-title {
    overflow: hidden;
    font-size: 0.67rem;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .header-contact {
    width: auto;
    flex: 0 0 auto;
  }

  .contact-icon,
  .contact-meta-label {
    display: none;
  }

  .contact-meta-phone {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 8px;
    border: 1px solid #bbf7d0;
    border-radius: 8px;
    font-size: 0.82rem;
  }

  .main-navbar {
    top: 0;
  }

  .nav-container {
    align-items: stretch;
    padding-inline: 12px;
  }

  .mobile-nav-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    min-height: 50px;
    padding: 0 4px;
    border: 0;
    background: transparent;
    color: #fff;
    font: 700 0.95rem/1 'Noto Sans SC', sans-serif;
    cursor: pointer;
  }

  .nav-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    padding: 0 0 12px;
    overflow: visible;
  }

  .main-navbar.nav-open .nav-menu {
    display: flex;
  }

  .nav-item a {
    min-height: 46px;
    padding: 13px 12px;
    border-radius: 6px;
    font-size: 0.92rem;
  }

  .hero-clean-section {
    padding: 16px 0 28px;
  }

  .hero-clean-placeholder-box {
    min-height: 300px;
    padding: 28px 20px;
  }

  .hero-clean-placeholder-box i {
    font-size: 2.6rem;
  }

  .hero-clean-placeholder-box h1 {
    max-width: 12ch;
    font-size: clamp(1.75rem, 8vw, 2.2rem) !important;
  }

  .hero-clean-placeholder-box p {
    font-size: 0.88rem !important;
  }

  .hero-clean-text-bar {
    align-items: stretch;
    text-align: left;
  }

  .hero-clean-text-bar .btn {
    width: 100%;
  }

  .product-filter-tabs {
    margin-inline: -16px;
    padding: 0 16px 8px;
  }

  .filter-tab {
    min-height: 44px;
    padding: 9px 14px;
  }

  .clean-p-card {
    padding: 0;
  }

  .floating-side-bar {
    top: auto;
    right: 12px;
    bottom: 10px;
    left: 12px;
    transform: none;
    flex-direction: row;
    gap: 0;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 10px 28px rgba(15, 23, 42, 0.18);
  }

  .floating-item {
    width: auto;
    height: 52px;
    min-height: 52px;
    flex: 1;
    flex-direction: row;
    gap: 7px;
    border-right: 1px solid var(--border-color);
    border-bottom: 0;
    font-size: 0.78rem;
  }

  .floating-item:last-child {
    border-right: 0;
  }

  .floating-item i {
    margin: 0;
  }
}

@media (max-width: 480px) {
  .header-contact {
    display: none;
  }

  .brand-main-title {
    font-size: 0.94rem;
  }

  .brand-sub-title {
    font-size: 0.68rem;
  }

  .section-header {
    margin-bottom: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }

  .hero-particles-canvas {
    display: none;
  }
}