/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #2563EB;
  --primary-dark: #1D4ED8;
  --primary-light: #EFF6FF;
  --accent: #06B6D4;
  --dark: #0F172A;
  --dark-2: #1E293B;
  --text: #334155;
  --text-light: #64748B;
  --border: #E2E8F0;
  --bg: #F8FAFC;
  --white: #FFFFFF;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 20px rgba(15,23,42,0.08);
  --shadow-lg: 0 12px 40px rgba(15,23,42,0.14);
  --transition: 0.3s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  font-size: 15px;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

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

.section { padding: 90px 0; }
.text-center { text-align: center; }
.mt-40 { margin-top: 40px; }

/* ===== SECTION HEADER ===== */
.section-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: 100px;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.section-title {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  color: var(--dark);
  line-height: 1.3;
  margin-bottom: 14px;
}

.section-desc {
  color: var(--text-light);
  font-size: 16px;
  line-height: 1.8;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37,99,235,0.35);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-white {
  background: var(--white);
  color: var(--primary);
  border-color: var(--white);
}
.btn-white:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

.btn-outline-white {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.6);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--white);
  transform: translateY(-2px);
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: var(--shadow); }

.header-inner {
  display: flex;
  align-items: center;
  height: 70px;
  gap: 32px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.logo-icon {
  width: 40px; height: 40px;
  background: var(--primary);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--white);
  font-size: 18px;
}
.logo-text { display: flex; flex-direction: column; line-height: 1; }
.logo-cn { font-size: 18px; font-weight: 700; color: var(--dark); }
.logo-en { font-size: 11px; color: var(--text-light); margin-top: 2px; }

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav-link {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
  transition: var(--transition);
}
.nav-link:hover, .nav-link.active {
  background: var(--primary-light);
  color: var(--primary);
}

.header-contact {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: var(--white);
  padding: 8px 18px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  flex-shrink: 0;
  white-space: nowrap;
}

.menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.menu-btn span {
  display: block;
  width: 24px; height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 50%, #0F172A 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding-top: 70px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero-shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.08;
  background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
}
.hero-shape-1 { width: 600px; height: 600px; top: -200px; right: -100px; }
.hero-shape-2 { width: 400px; height: 400px; bottom: -100px; left: -100px; background: radial-gradient(circle, var(--accent) 0%, transparent 70%); }
.hero-shape-3 { width: 300px; height: 300px; top: 50%; left: 40%; opacity: 0.05; }

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 60px;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.9);
  padding: 6px 18px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
  letter-spacing: 1px;
}

.hero-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  color: var(--white);
  line-height: 1.25;
  margin-bottom: 20px;
}
.hero-title .highlight {
  background: linear-gradient(90deg, #60A5FA, #06B6D4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  color: rgba(255,255,255,0.75);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 500px;
}

.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-size: 32px;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: 4px;
}
.stat-num em {
  font-style: normal;
  font-size: 18px;
  color: var(--accent);
}
.stat-label { font-size: 13px; color: rgba(255,255,255,0.6); }
.stat-divider { width: 1px; height: 40px; background: rgba(255,255,255,0.2); }

/* Hero Visual */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 440px;
}

.hero-mockup {
  width: 280px;
  background: var(--white);
  border-radius: 16px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.4);
  overflow: hidden;
  position: relative;
  z-index: 2;
}
.mockup-bar {
  height: 36px;
  background: #F1F5F9;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 6px;
}
.mockup-bar::before {
  content: '';
  display: block;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: #F87171;
  box-shadow: 16px 0 0 #FBBF24, 32px 0 0 #34D399;
}
.mockup-content { padding: 16px; }
.mockup-line {
  height: 10px;
  background: #E2E8F0;
  border-radius: 6px;
  margin-bottom: 10px;
}
.mockup-line.w80 { width: 80%; }
.mockup-line.w60 { width: 60%; }
.mockup-line.w70 { width: 70%; }
.mockup-line.w50 { width: 50%; }
.mockup-blocks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 14px 0;
}
.mockup-block {
  height: 60px;
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
  border-radius: 8px;
}

.hero-card {
  position: absolute;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 12px;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap;
  z-index: 3;
}
.hero-card i { font-size: 20px; }
.hero-card-1 { top: 40px; right: 20px; }
.hero-card-2 { bottom: 100px; right: 0; }
.hero-card-3 { bottom: 40px; left: 20px; }
.hero-card-1 i { color: #60A5FA; }
.hero-card-2 i { color: #34D399; }
.hero-card-3 i { color: #4ADE80; }

/* ===== SERVICES ===== */
.services { background: var(--bg); }

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

.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transition: var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.service-card:hover::before { transform: scaleX(1); }

.service-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
  background: color-mix(in srgb, var(--c) 12%, transparent);
  color: var(--c);
}

.service-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}
.service-card p {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 16px;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.service-tags li {
  background: var(--bg);
  color: var(--text-light);
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 100px;
  border: 1px solid var(--border);
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
}
.service-link:hover { gap: 10px; }

/* ===== WHY US ===== */
.why-us { background: var(--white); }
.why-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.why-text .section-header { text-align: left; max-width: none; margin: 0; }
.why-text .section-title { margin-bottom: 16px; }
.why-text .section-desc { margin-bottom: 36px; }

.why-list { display: flex; flex-direction: column; gap: 24px; margin-bottom: 36px; }
.why-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.why-icon {
  width: 44px; height: 44px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.why-item h4 { font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 4px; }
.why-item p { font-size: 14px; color: var(--text-light); }

.why-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 420px;
}
.why-cards { position: relative; width: 100%; height: 100%; }
.why-circle {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 200px; height: 200px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 20px 60px rgba(37,99,235,0.35);
}
.why-circle-inner { text-align: center; color: var(--white); }
.big-num { display: block; font-size: 52px; font-weight: 800; line-height: 1; }
.big-label { font-size: 14px; opacity: 0.8; }

.why-card {
  position: absolute;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 22px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  color: var(--dark);
  box-shadow: var(--shadow);
  font-size: 15px;
}
.why-card i { font-size: 22px; color: var(--primary); }
.why-card-top { top: 30px; left: 50%; transform: translateX(-50%); }
.why-card-mid { top: 50%; right: 0; transform: translateY(-50%); }
.why-card-bot { bottom: 30px; left: 50%; transform: translateX(-50%); }

/* ===== CASES PREVIEW ===== */
.cases-preview { background: var(--bg); }

.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.case-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.case-img {
  height: 220px;
  position: relative;
  overflow: hidden;
}
.case-img-1 { background: linear-gradient(135deg, #1E3A8A, #3B82F6); }
.case-img-2 { background: linear-gradient(135deg, #065F46, #10B981); }
.case-img-3 { background: linear-gradient(135deg, #7C3AED, #A78BFA); }
.case-img-4 { background: linear-gradient(135deg, #B45309, #F59E0B); }

.case-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    45deg,
    rgba(255,255,255,0.03) 0px,
    rgba(255,255,255,0.03) 1px,
    transparent 1px,
    transparent 20px
  );
}

.case-overlay {
  position: absolute;
  top: 16px; left: 16px;
  z-index: 2;
}
.case-type {
  background: rgba(0,0,0,0.4);
  color: var(--white);
  padding: 5px 14px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  backdrop-filter: blur(4px);
}

.case-info { padding: 24px; }
.case-info h3 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.case-info p { font-size: 14px; color: var(--text-light); line-height: 1.7; margin-bottom: 14px; }
.case-tags { display: flex; gap: 8px; }
.case-tags span {
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
}

/* ===== PROCESS ===== */
.process { background: var(--white); }

.process-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.process-step {
  flex: 1;
  text-align: center;
  padding: 36px 24px;
  position: relative;
}

.step-num {
  font-size: 60px;
  font-weight: 900;
  color: var(--primary-light);
  line-height: 1;
  margin-bottom: -10px;
  position: relative;
  z-index: 0;
}

.step-icon {
  width: 64px; height: 64px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
  margin: 0 auto 16px;
  position: relative;
  z-index: 1;
  box-shadow: 0 8px 24px rgba(37,99,235,0.35);
}

.process-step h3 { font-size: 16px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.process-step p { font-size: 14px; color: var(--text-light); }

.process-arrow {
  color: var(--border);
  font-size: 24px;
  flex-shrink: 0;
  padding: 0 8px;
  padding-top: 20px;
}

/* ===== CTA SECTION ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary), #1D4ED8, var(--accent));
  padding: 80px 0;
}
.cta-inner { text-align: center; }
.cta-inner h2 { font-size: clamp(22px, 3vw, 36px); font-weight: 800; color: var(--white); margin-bottom: 12px; }
.cta-inner p { color: rgba(255,255,255,0.8); font-size: 16px; margin-bottom: 36px; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== FOOTER ===== */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.75);
  padding-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-logo i { font-size: 22px; color: var(--primary); background: rgba(37,99,235,0.2); width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border-radius: 10px; }
.footer-logo span { font-size: 18px; font-weight: 700; color: var(--white); }

.footer-brand p { font-size: 14px; line-height: 1.8; margin-bottom: 20px; }

.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.7);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--primary); color: var(--white); }

.footer-links h4, .footer-contact h4 {
  color: var(--white);
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 20px;
}
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}
.footer-links a:hover { color: var(--white); padding-left: 4px; }

.footer-contact ul { display: flex; flex-direction: column; gap: 12px; }
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
}
.footer-contact i { color: var(--primary); margin-top: 2px; flex-shrink: 0; }
.footer-contact a { color: rgba(255,255,255,0.75); transition: var(--transition); }
.footer-contact a:hover { color: var(--white); }

.footer-qr { margin-top: 20px; }
.qr-box {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 16px 24px;
  font-size: 13px;
}
.qr-box i { font-size: 36px; color: #4ADE80; }

.footer-bottom {
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.4); transition: var(--transition); }
.footer-bottom a:hover { color: rgba(255,255,255,0.7); }

/* ===== PAGE HERO (inner pages) ===== */
.page-hero {
  background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 100%);
  padding: 130px 0 70px;
  text-align: center;
}
.page-hero h1 { font-size: clamp(28px, 4vw, 42px); font-weight: 800; color: var(--white); margin-bottom: 12px; }
.page-hero p { color: rgba(255,255,255,0.7); font-size: 16px; }
.breadcrumb { display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 16px; }
.breadcrumb a, .breadcrumb span { font-size: 13px; color: rgba(255,255,255,0.5); }
.breadcrumb .sep { opacity: 0.4; }
.breadcrumb .current { color: rgba(255,255,255,0.85); }

/* ===== ABOUT PAGE ===== */
.about-intro { background: var(--white); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 400px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.about-image-inner {
  text-align: center;
  color: var(--white);
}
.about-image-inner i { font-size: 80px; opacity: 0.3; }
.about-image-badge {
  position: absolute;
  bottom: 24px; right: 24px;
  background: var(--white);
  border-radius: var(--radius);
  padding: 14px 20px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}
.about-image-badge .badge-num { display: block; font-size: 28px; font-weight: 800; color: var(--primary); }
.about-image-badge .badge-label { font-size: 12px; color: var(--text-light); }

.about-content { }
.about-content .section-tag { margin-bottom: 12px; }
.about-content h2 { font-size: clamp(22px, 3vw, 32px); font-weight: 700; color: var(--dark); margin-bottom: 16px; }
.about-content p { color: var(--text-light); margin-bottom: 14px; line-height: 1.8; }

.about-nums { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 32px 0; }
.about-num { text-align: center; padding: 20px 10px; background: var(--bg); border-radius: var(--radius); }
.about-num .num { font-size: 28px; font-weight: 800; color: var(--primary); }
.about-num .lbl { font-size: 13px; color: var(--text-light); margin-top: 4px; }

.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.value-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.value-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.value-card i { font-size: 32px; color: var(--primary); margin-bottom: 14px; }
.value-card h3 { font-size: 16px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.value-card p { font-size: 14px; color: var(--text-light); }

/* ===== PRODUCTS PAGE ===== */
.product-section { scroll-margin-top: 80px; }
.product-section:nth-child(even) { background: var(--bg); }
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.product-detail.reverse { direction: rtl; }
.product-detail.reverse > * { direction: ltr; }
.product-visual {
  height: 360px;
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 80px;
  color: rgba(255,255,255,0.4);
  position: relative;
  overflow: hidden;
}
.product-visual-1 { background: linear-gradient(135deg, #1E3A8A, #3B82F6); }
.product-visual-2 { background: linear-gradient(135deg, #4C1D95, #8B5CF6); }
.product-visual-3 { background: linear-gradient(135deg, #064E3B, #10B981); }
.product-visual-4 { background: linear-gradient(135deg, #78350F, #F59E0B); }
.product-visual-5 { background: linear-gradient(135deg, #7F1D1D, #EF4444); }
.product-visual-6 { background: linear-gradient(135deg, #0E7490, #06B6D4); }

.product-info { }
.product-info .section-tag { margin-bottom: 12px; }
.product-info h2 { font-size: clamp(22px, 3vw, 30px); font-weight: 700; color: var(--dark); margin-bottom: 14px; }
.product-info p { color: var(--text-light); line-height: 1.8; margin-bottom: 20px; }
.product-features { display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; }
.product-features li {
  display: flex; align-items: center; gap: 10px;
  font-size: 14px; color: var(--text);
}
.product-features li i { color: var(--primary); font-size: 14px; }

/* ===== CASES PAGE ===== */
.cases-filter { display: flex; gap: 10px; justify-content: center; margin-bottom: 40px; flex-wrap: wrap; }
.filter-btn {
  padding: 8px 22px;
  border: 1px solid var(--border);
  background: var(--white);
  border-radius: 100px;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text);
  font-weight: 500;
}
.filter-btn:hover, .filter-btn.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

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

/* ===== NEWS PAGE ===== */
.news-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 40px; }
.news-list { display: flex; flex-direction: column; gap: 28px; }
.news-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.news-item:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.news-item-img {
  height: 160px;
  display: flex; align-items: center; justify-content: center;
  font-size: 40px;
  color: rgba(255,255,255,0.4);
}
.news-img-1 { background: linear-gradient(135deg, #1E3A8A, #3B82F6); }
.news-img-2 { background: linear-gradient(135deg, #065F46, #10B981); }
.news-img-3 { background: linear-gradient(135deg, #4C1D95, #8B5CF6); }
.news-img-4 { background: linear-gradient(135deg, #78350F, #F59E0B); }

.news-item-body { padding: 20px 20px 20px 0; }
.news-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.news-tag { background: var(--primary-light); color: var(--primary); font-size: 11px; font-weight: 600; padding: 3px 10px; border-radius: 100px; }
.news-date { font-size: 13px; color: var(--text-light); }
.news-item-body h3 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 8px; line-height: 1.4; }
.news-item-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; }

.news-sidebar { }
.sidebar-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
}
.sidebar-card h3 { font-size: 16px; font-weight: 700; color: var(--dark); margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.sidebar-list { display: flex; flex-direction: column; gap: 12px; }
.sidebar-list li { font-size: 14px; color: var(--text); display: flex; align-items: flex-start; gap: 8px; line-height: 1.5; }
.sidebar-list li i { color: var(--primary); font-size: 12px; margin-top: 3px; flex-shrink: 0; }

/* ===== CONTACT PAGE ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 60px; }
.contact-info-cards { display: flex; flex-direction: column; gap: 16px; margin-bottom: 32px; }
.contact-info-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--bg);
  border-radius: var(--radius);
  padding: 20px;
}
.contact-info-icon {
  width: 48px; height: 48px;
  background: var(--primary);
  color: var(--white);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.contact-info-card h4 { font-size: 14px; color: var(--text-light); margin-bottom: 4px; }
.contact-info-card p { font-size: 16px; font-weight: 600; color: var(--dark); }
.contact-info-card a { color: var(--primary); font-size: 16px; font-weight: 600; }

.contact-form-wrap {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
}
.contact-form-wrap h2 { font-size: 22px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.contact-form-wrap p { font-size: 14px; color: var(--text-light); margin-bottom: 28px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--dark); margin-bottom: 8px; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  color: var(--dark);
  background: var(--bg);
  font-family: inherit;
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }

.map-placeholder {
  height: 260px;
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  flex-direction: column;
  gap: 12px;
  color: var(--primary);
  margin-top: 24px;
}
.map-placeholder i { font-size: 48px; opacity: 0.4; }
.map-placeholder p { font-size: 15px; font-weight: 600; color: var(--text-light); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero .container { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .why-inner { grid-template-columns: 1fr; gap: 40px; }
  .why-visual { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .product-detail { grid-template-columns: 1fr; gap: 40px; }
  .product-detail.reverse { direction: ltr; }
  .news-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .all-cases-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .nav { display: none; position: absolute; top: 70px; left: 0; right: 0; background: var(--white); flex-direction: column; padding: 20px 24px; gap: 4px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow); }
  .nav.open { display: flex; }
  .menu-btn { display: flex; }
  .header-contact { display: none; }
  .hero-stats { flex-direction: column; gap: 20px; }
  .stat-divider { width: 40px; height: 1px; }
  .services-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .process-steps { flex-direction: column; }
  .process-arrow { transform: rotate(90deg); padding: 4px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .all-cases-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .about-nums { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-btns { flex-direction: column; }
  .cta-btns { flex-direction: column; align-items: center; }
  .hero-title { font-size: 26px; }
  .contact-form-wrap { padding: 24px 20px; }
}

/* ===== AI SECTION ===== */
.ai-section { background: var(--dark); }
.ai-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.ai-inner .section-title { color: var(--white); }
.ai-features { display: flex; flex-direction: column; gap: 20px; margin-bottom: 32px; }
.ai-feat {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.ai-feat i {
  width: 40px; height: 40px;
  background: rgba(37,99,235,0.2);
  color: #60A5FA;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.ai-feat h4 { font-size: 14px; font-weight: 700; color: var(--white); margin-bottom: 4px; }
.ai-feat p { font-size: 13px; color: rgba(255,255,255,0.55); line-height: 1.6; }

.ai-visual {
  display: flex; align-items: center; justify-content: center;
  height: 420px;
  position: relative;
}
.ai-card-wrap { position: relative; width: 300px; height: 300px; display: flex; align-items: center; justify-content: center; }
.ai-glow {
  position: absolute; inset: -40px;
  background: radial-gradient(circle, rgba(37,99,235,0.3) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulse 3s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:0.5;transform:scale(1)} 50%{opacity:1;transform:scale(1.1)} }
.ai-circle-main {
  width: 120px; height: 120px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 4px;
  color: var(--white);
  font-size: 36px;
  font-weight: 800;
  box-shadow: 0 0 40px rgba(37,99,235,0.5);
  z-index: 2;
  position: relative;
}
.ai-circle-main span { font-size: 14px; font-weight: 700; letter-spacing: 2px; }
.ai-orbit {
  position: absolute;
  border: 1px dashed rgba(255,255,255,0.15);
  border-radius: 50%;
  display: flex; align-items: flex-start; justify-content: center;
}
.ai-orbit-1 { width: 180px; height: 180px; animation: spin 8s linear infinite; }
.ai-orbit-2 { width: 240px; height: 240px; animation: spin 12s linear infinite reverse; }
.ai-orbit-3 { width: 300px; height: 300px; animation: spin 16s linear infinite; }
@keyframes spin { from{transform:rotate(0deg)} to{transform:rotate(360deg)} }
.ai-dot {
  width: 36px; height: 36px;
  background: var(--dark-2);
  border: 1px solid rgba(37,99,235,0.5);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #60A5FA;
  font-size: 14px;
  margin-top: -18px;
}
.ai-tags {
  position: absolute;
  bottom: -50px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 8px; white-space: nowrap;
}
.ai-tags span {
  background: rgba(37,99,235,0.2);
  border: 1px solid rgba(37,99,235,0.4);
  color: #93C5FD;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 100px;
}

/* ===== SEO TEXT SECTION ===== */
.seo-text-section {
  background: var(--bg);
  padding: 40px 0;
  border-top: 1px solid var(--border);
}
.seo-text-inner {
  max-width: 900px;
  margin: 0 auto;
}
.seo-text-inner h2 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 10px;
}
.seo-text-inner p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 2;
}
.seo-text-inner a {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-color: rgba(37,99,235,0.3);
}

@media (max-width: 1024px) {
  .ai-inner { grid-template-columns: 1fr; gap: 40px; }
  .ai-visual { display: none; }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

.fade-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-stagger.visible > *:nth-child(1) { opacity: 1; transform: none; transition-delay: 0.1s; }
.fade-stagger.visible > *:nth-child(2) { opacity: 1; transform: none; transition-delay: 0.2s; }
.fade-stagger.visible > *:nth-child(3) { opacity: 1; transform: none; transition-delay: 0.3s; }
.fade-stagger.visible > *:nth-child(4) { opacity: 1; transform: none; transition-delay: 0.4s; }
.fade-stagger.visible > *:nth-child(5) { opacity: 1; transform: none; transition-delay: 0.5s; }
.fade-stagger.visible > *:nth-child(6) { opacity: 1; transform: none; transition-delay: 0.6s; }