*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #2C3E50;
  --accent: #E87722;
  --bg: #f5f5f0;
  --white: #ffffff;
  --text: #333333;
  --text-light: #666666;
  --border: #e0ddd8;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
}
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

/* Hero Banner */
.hero {
  position: relative;
  width: 100%;
  min-height: 520px;
  background: linear-gradient(135deg, #1a2a3a 0%, #2C3E50 50%, #34495e 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(232,119,34,0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--accent), #f39c12, var(--accent));
}
.hero-inner {
  max-width: 1200px;
  width: 100%;
  padding: 60px 40px;
  display: flex;
  align-items: center;
  gap: 50px;
  position: relative;
  z-index: 1;
}
.hero-text { flex: 1; }
.hero-text h1 {
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.hero-text h1 span { color: var(--accent); }
.hero-text p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.75);
  line-height: 1.9;
  margin-bottom: 28px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(232,119,34,0.15);
  border: 1px solid rgba(232,119,34,0.4);
  border-radius: 6px;
  padding: 10px 20px;
  color: var(--accent);
  font-size: 0.95rem;
  font-weight: 600;
}
.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.hero-img {
  flex: 1;
  max-width: 500px;
}
.hero-img img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Section */
.section {
  padding: 70px 0;
}
.section-white { background: var(--white); }
.section-gray { background: var(--bg); }

/* Section Header */
.section-header {
  text-align: center;
  margin-bottom: 50px;
}
.section-header .tag {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), #f39c12);
  color: var(--white);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 5px 18px;
  border-radius: 20px;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-header h2 {
  font-size: 2rem;
  color: var(--primary);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 14px;
}
.section-header p {
  font-size: 1.05rem;
  color: var(--text-light);
  max-width: 700px;
  margin: 0 auto;
}

/* Intro Row */
.intro-row {
  display: flex;
  align-items: center;
  gap: 50px;
  margin-bottom: 30px;
}
.intro-row.reverse { flex-direction: row-reverse; }
.intro-row .img-wrap {
  flex: 1;
  min-width: 0;
}
.intro-row .img-wrap img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  border-radius: 10px;
  box-shadow: var(--shadow);
}
.intro-row .text-wrap {
  flex: 1;
  min-width: 0;
}
.intro-row .text-wrap h2 {
  font-size: 1.7rem;
  color: var(--primary);
  margin-bottom: 18px;
  font-weight: 700;
  position: relative;
  padding-left: 18px;
}
.intro-row .text-wrap h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background: var(--accent);
  border-radius: 2px;
}
.intro-row .text-wrap p {
  color: var(--text-light);
  font-size: 1rem;
  margin-bottom: 14px;
}

/* Process Steps */
.process-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  margin-top: 40px;
}
.process-card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.process-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
}
.process-card img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  display: block;
}
.process-card .card-body {
  padding: 28px;
}
.process-card .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: var(--white);
  font-size: 1rem;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 14px;
}
.process-card h3 {
  font-size: 1.25rem;
  color: var(--primary);
  margin-bottom: 12px;
  font-weight: 700;
}
.process-card p {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* Flow Chart Style */
.flow-section {
  background: var(--white);
  border-radius: 16px;
  padding: 50px 40px;
  box-shadow: var(--shadow);
  margin: 40px 0;
}
.flow-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0;
}
.flow-step {
  background: linear-gradient(135deg, var(--primary), #34495e);
  color: var(--white);
  padding: 14px 22px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  text-align: center;
  min-width: 110px;
  transition: background 0.3s;
}
.flow-step:hover { background: var(--accent); }
.flow-arrow {
  font-size: 1.4rem;
  color: var(--accent);
  font-weight: 700;
}

/* Case Showcase */
.case-showcase {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.case-card {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  box-shadow: var(--shadow);
}
.case-card img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}
.case-card:hover img {
  transform: scale(1.05);
}
.case-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  padding: 30px 20px 20px;
  color: var(--white);
}
.case-overlay h4 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}
.case-overlay span {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
}

/* Advantages */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.adv-item {
  background: var(--white);
  border-radius: 12px;
  padding: 36px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease;
  border-top: 3px solid transparent;
}
.adv-item:hover {
  transform: translateY(-6px);
  border-top-color: var(--accent);
}
.adv-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  background: linear-gradient(135deg, var(--accent), #f39c12);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--white);
}
.adv-item h4 {
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 10px;
  font-weight: 700;
}
.adv-item p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* Stats Bar */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 60px;
  padding: 50px 0;
  background: linear-gradient(135deg, var(--primary), #1a2a3a);
  border-radius: 0;
}
.stat-item {
  text-align: center;
  color: var(--white);
}
.stat-item .num {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-item .label {
  font-size: 0.95rem;
  opacity: 0.8;
}

/* Full-width Image Band */
.img-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
.img-band img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  display: block;
}

/* Two-column detail */
.detail-row {
  display: flex;
  gap: 40px;
  align-items: flex-start;
  margin: 30px 0;
}
.detail-row .detail-img {
  flex: 1.1;
  min-width: 0;
}
.detail-row .detail-img img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  border-radius: 10px;
  box-shadow: var(--shadow);
}
.detail-row .detail-text {
  flex: 0.9;
  min-width: 0;
}
.detail-row .detail-text h3 {
  font-size: 1.5rem;
  color: var(--primary);
  margin-bottom: 16px;
  font-weight: 700;
  padding-left: 16px;
  border-left: 4px solid var(--accent);
}
.detail-row .detail-text p {
  color: var(--text-light);
  font-size: 1rem;
  margin-bottom: 12px;
}
.detail-row .detail-text ul {
  list-style: none;
  padding: 0;
}
.detail-row .detail-text ul li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  color: var(--text);
  font-size: 0.98rem;
}
.detail-row .detail-text ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
}

/* CTA Block */
.cta-block {
  background: linear-gradient(135deg, var(--accent), #d35400);
  border-radius: 16px;
  padding: 50px 40px;
  text-align: center;
  color: var(--white);
  margin: 40px 0;
}
.cta-block h3 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 14px;
}
.cta-block p {
  font-size: 1.05rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* Spec Table */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 30px 0;
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.spec-table th {
  background: var(--primary);
  color: var(--white);
  padding: 16px 20px;
  text-align: left;
  font-weight: 600;
  font-size: 0.95rem;
}
.spec-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  color: var(--text);
}
.spec-table tr:last-child td { border-bottom: none; }
.spec-table tr:hover td { background: #faf8f5; }

/* Responsive */
@media (max-width: 992px) {
  .hero-inner { flex-direction: column; text-align: center; padding: 50px 24px; gap: 30px; }
  .hero-img { max-width: 100%; }
  .hero-text h1 { font-size: 2rem; }
  .intro-row, .intro-row.reverse { flex-direction: column; }
  .intro-row .img-wrap img { height: 300px; }
  .process-grid { grid-template-columns: 1fr; }
  .case-showcase { grid-template-columns: repeat(2, 1fr); }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-bar { flex-wrap: wrap; gap: 30px; padding: 40px 20px; }
  .detail-row { flex-direction: column; }
  .detail-row .detail-img img { height: 300px; }
  .img-band { grid-template-columns: 1fr; }
  .img-band img { height: 250px; }
  .flow-steps { gap: 8px; }
  .flow-step { min-width: 90px; padding: 10px 14px; font-size: 0.82rem; }
  .flow-arrow { font-size: 1.1rem; }
  .section-header h2 { font-size: 1.6rem; }
}
@media (max-width: 600px) {
  html { font-size: 14px; }
  .hero { min-height: 400px; }
  .hero-text h1 { font-size: 1.6rem; }
  .hero-badge { font-size: 0.82rem; padding: 8px 14px; }
  .section { padding: 50px 0; }
  .section-header { margin-bottom: 30px; }
  .section-header h2 { font-size: 1.4rem; }
  .process-card .card-body { padding: 20px; }
  .case-showcase { grid-template-columns: 1fr; }
  .case-card img { height: 280px; }
  .adv-grid { grid-template-columns: 1fr; }
  .adv-item { padding: 28px 20px; }
  .stat-item .num { font-size: 2rem; }
  .stats-bar { gap: 20px; }
  .flow-section { padding: 30px 20px; }
  .flow-steps { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); }
  .cta-block { padding: 36px 24px; }
  .cta-block h3 { font-size: 1.4rem; }
  .spec-table th, .spec-table td { padding: 10px 14px; font-size: 0.85rem; }
  .process-card img, .intro-row .img-wrap img, .detail-row .detail-img img { height: 260px; }
  .hero-img img { border-radius: 8px; }
}

        .kuang-nav {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #fff;
            border-bottom: 2px solid #E87722;
            box-shadow: 0 2px 12px rgba(0,0,0,0.06);
        }

        .kuang-nav-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            padding: 0 24px;
        }

        .kuang-nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
        }

        .kuang-nav-brand-icon {
            width: 36px;
            height: 36px;
            background: #E87722;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
        }

        .kuang-nav-brand-text {
            font-size: 17px;
            font-weight: 700;
            color: #2C3E50;
        }

        .kuang-nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
            list-style: none;
        }

        .kuang-nav-links a {
            display: block;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: #3d4a5a;
            text-decoration: none;
            border-radius: 6px;
            transition: color 0.2s, background 0.2s;
            white-space: nowrap;
        }

        .kuang-nav-links a:hover,
        .kuang-nav-links a.kuang-active {
            color: #E87722;
            background: rgba(232,119,34,0.07);
        }

        .kuang-nav-phone {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 600;
            color: #E87722;
            text-decoration: none;
            flex-shrink: 0;
            transition: opacity 0.2s;
        }

        .kuang-nav-phone:hover { opacity: 0.75; }

        .kuang-hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 40px;
            height: 40px;
            cursor: pointer;
            border: none;
            background: transparent;
            gap: 5px;
            -webkit-tap-highlight-color: transparent;
        }

        .kuang-hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: #2C3E50;
            border-radius: 2px;
            transition: transform 0.3s, opacity 0.3s;
        }

        .kuang-hamburger.kuang-open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
        .kuang-hamburger.kuang-open span:nth-child(2) { opacity: 0; }
        .kuang-hamburger.kuang-open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

        .kuang-mobile-menu {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 2px solid #E87722;
            box-shadow: 0 8px 24px rgba(0,0,0,0.1);
            z-index: 999;
            padding: 8px 0;
            transform: translateY(-8px);
            opacity: 0;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .kuang-mobile-menu.kuang-show {
            display: block;
            transform: translateY(0);
            opacity: 1;
        }

        .kuang-mobile-menu a {
            display: block;
            padding: 12px 24px;
            font-size: 16px;
            font-weight: 500;
            color: #3d4a5a;
            text-decoration: none;
            border-left: 3px solid transparent;
            transition: all 0.2s;
        }

        .kuang-mobile-menu a:hover,
        .kuang-mobile-menu a.kuang-active {
            color: #E87722;
            background: rgba(232,119,34,0.05);
            border-left-color: #E87722;
        }

        .kuang-mobile-menu .kuang-mob-phone {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 14px 24px;
            font-size: 16px;
            font-weight: 600;
            color: #E87722;
            text-decoration: none;
            border-top: 1px solid #eee;
            margin-top: 4px;
        }


        .kuang-footer {
            background: #1a2332;
            color: #c0c8d4;
        }

        .kuang-footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 44px 24px 0;
        }

        .kuang-footer-top {
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

        .kuang-footer-brand {
            flex: 1 1 260px;
            min-width: 220px;
        }

        .kuang-footer-brand-row {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .kuang-footer-brand-icon {
            width: 36px;
            height: 36px;
            background: #E87722;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 17px;
            flex-shrink: 0;
        }

        .kuang-footer-brand-name {
            font-size: 18px;
            font-weight: 700;
            color: #e8ecf0;
        }

        .kuang-footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #7a8a9a;
            margin-bottom: 14px;
        }

        .kuang-footer-contact {
            display: flex;
            flex-direction: column;
        }

        .kuang-footer-contact a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #E87722;
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 6px;
            transition: opacity 0.2s;
        }

        .kuang-footer-contact a:hover { opacity: 0.75; }

        .kuang-footer-nav {
            flex: 0 1 170px;
            min-width: 140px;
        }

        .kuang-footer-nav h3 {
            font-size: 14px;
            font-weight: 600;
            color: #e8ecf0;
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .kuang-footer-nav ul { list-style: none; }

        .kuang-footer-nav ul li { margin-bottom: 10px; }

        .kuang-footer-nav ul li a {
            font-size: 14px;
            color: #7a8a9a;
            text-decoration: none;
            transition: color 0.2s, transform 0.2s;
            display: inline-block;
        }

        .kuang-footer-nav ul li a:hover {
            color: #E87722;
            transform: translateX(3px);
        }


        .kuang-footer-news {
            flex: 1 1 320px;
            min-width: 260px;
        }

        .kuang-footer-news h3 {
            font-size: 14px;
            font-weight: 600;
            color: #e8ecf0;
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .kuang-news-list {
            display: flex;
            flex-direction: column;
        }

        .kuang-news-list a {
            display: block;
            padding: 9px 14px 9px 24px;
            font-size: 14px;
            color: #7a8a9a;
            text-decoration: none;
            border-radius: 5px;
            position: relative;
            line-height: 1.5;
            transition: color 0.2s, background 0.2s;
        }

        .kuang-news-list a::before {
            content: "";
            position: absolute;
            left: 10px;
            top: 50%;
            transform: translateY(-50%);
            width: 5px;
            height: 5px;
            background: #3a4a5e;
            border-radius: 50%;
            transition: background 0.2s;
        }

        .kuang-news-list a:hover {
            color: #E87722;
            background: rgba(232,119,34,0.06);
        }

        .kuang-news-list a:hover::before { background: #E87722; }

        .kuang-news-list a + a {
            border-top: 1px solid rgba(255,255,255,0.04);
        }


        .kuang-footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            padding: 18px 0 22px;
        }

        .kuang-footer-bottom p {
            font-size: 13px;
            color: #4e5a6a;
            margin: 0;
        }

        .kuang-footer-bottom-links {
            display: flex;
            gap: 18px;
        }

        .kuang-footer-bottom-links a {
            font-size: 13px;
            color: #4e5a6a;
            text-decoration: none;
            transition: color 0.2s;
        }

        .kuang-footer-bottom-links a:hover { color: #E87722; }


        .kuang-back-top {
            position: fixed;
            bottom: 28px;
            right: 28px;
            width: 44px;
            height: 44px;
            background: #E87722;
            color: #fff;
            border: none;
            border-radius: 10px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 16px rgba(232,119,34,0.35);
            opacity: 0;
            transform: translateY(12px);
            transition: all 0.3s ease;
            z-index: 800;
            -webkit-tap-highlight-color: transparent;
        }

        .kuang-back-top.kuang-visible {
            opacity: 1;
            transform: translateY(0);
        }

        .kuang-back-top:hover {
            background: #d06a1a;
            transform: translateY(-2px);
        }


        @media (max-width: 1024px) {
            .kuang-footer-top { gap: 32px; }
        }

        @media (max-width: 768px) {
            .kuang-nav-links { display: none; }
            .kuang-nav-phone { display: none; }
            .kuang-hamburger { display: flex; }
            .kuang-footer-inner { padding: 32px 20px 0; }
            .kuang-footer-top { flex-direction: column; gap: 28px; }
            .kuang-footer-brand,
            .kuang-footer-nav,
            .kuang-footer-news { flex: 1 1 100%; min-width: 0; }
            .kuang-footer-bottom { flex-direction: column; text-align: center; }
        }

        @media (max-width: 480px) {
            .kuang-nav-inner { padding: 0 14px; height: 54px; }
            .kuang-nav-brand-text { font-size: 15px; }
            .kuang-nav-brand-icon { width: 30px; height: 30px; font-size: 15px; border-radius: 6px; }
            .kuang-mobile-menu { top: 54px; }
            .kuang-footer-inner { padding: 26px 14px 0; }
            .kuang-news-list a { font-size: 13px; padding: 8px 10px 8px 20px; }
            .kuang-news-list a::before { left: 6px; width: 4px; height: 4px; }
            .kuang-back-top { width: 38px; height: 38px; bottom: 16px; right: 14px; border-radius: 8px; }
        }