/* ==================== Reset & Base ==================== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #1a1a2e; line-height: 1.6; overflow-x: hidden; background: #fff;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }

/* ==================== Header ==================== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: #fff; box-shadow: 0 1px 20px rgba(0,0,0,0.04);
  transition: all 0.3s ease; height: 72px;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; padding: 0 48px; max-width: 1400px; margin: 0 auto;
}
.logo { color: #1a1a2e; }
.nav a { color: #4a4a5a; }
.nav a:hover, .nav a.active { color: #2563eb; background: rgba(37,99,235,0.08); }
.menu-toggle span { background: #1a1a2e; }
.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 18px; font-weight: 700; letter-spacing: 0.5px;
}

/* ==================== Navigation ==================== */
.nav { display: flex; gap: 2px; align-items: center; }
.nav a {
  padding: 8px 18px; font-size: 13px; font-weight: 500;
  border-radius: 6px; transition: all 0.25s; color: #4a4a5a;
  display: inline-block;
}
.nav a:hover,
.nav a.active { color: #2563eb; background: rgba(37,99,235,0.08); }

/* 下拉菜单 */
.nav-dropdown { position: relative; display: inline-block; }
.dropdown-trigger { cursor: pointer; display: block; padding: 8px 18px; font-size: 13px; font-weight: 500; border-radius: 6px; transition: all 0.25s; color: #4a4a5a; }
.nav-dropdown:hover .dropdown-trigger { color: #2563eb; background: rgba(37,99,235,0.08); }
.dropdown-trigger .arrow { font-size: 10px; margin-left: 2px; }
.dropdown-menu {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  background: #fff; border: 1px solid #eee; border-radius: 10px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.06);
  min-width: 140px; padding: 6px; opacity: 0; visibility: hidden;
  transition: all 0.2s; margin-top: 4px;
}
.nav-dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; }
.dropdown-menu a {
  display: block; padding: 8px 16px; font-size: 13px; color: #4a4a5a;
  border-radius: 6px; text-align: center; text-decoration: none;
}
.dropdown-menu a:hover { color: #2563eb; background: rgba(37,99,235,0.06); }

.menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.menu-toggle span { display: block; width: 22px; height: 2px; border-radius: 2px; transition: all 0.3s; background: #1a1a2e; }

/* ==================== Hero ==================== */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  overflow: hidden; background: #080c18;
}
.hero-bg {
  position: absolute; inset: 0;
  background: url('../images/shouyebeijing.jpg') center/cover no-repeat;
}
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: rgba(8,12,24,0.6);
}
.hero-content {
  position: relative; z-index: 2; padding: 120px 48px 80px;
  max-width: 1200px; margin: 0 auto; width: 100%;
}
.hero-badge {
  display: inline-block; padding: 6px 16px; font-size: 11px; font-weight: 500;
  letter-spacing: 3px; color: rgba(255,255,255,0.5); border: 1px solid rgba(255,255,255,0.12);
  border-radius: 20px; margin-bottom: 32px;
}
.hero-title { font-size: 60px; font-weight: 700; color: #fff; line-height: 1.08; margin-bottom: 24px; letter-spacing: -1.5px; }
.text-gradient { background: linear-gradient(135deg, #60a5fa, #a78bfa); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-desc { font-size: 16px; color: rgba(255,255,255,0.45); line-height: 1.8; margin-bottom: 40px; max-width: 480px; }
.hero-actions { display: flex; gap: 12px; }
.hero-stats { display: flex; gap: 56px; margin-top: 56px; padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.06); }
.stat-item { display: flex; align-items: baseline; gap: 4px; flex-wrap: wrap; }
.stat-num { font-size: 36px; font-weight: 700; color: #fff; line-height: 1; }
.stat-suffix { font-size: 18px; font-weight: 500; color: #60a5fa; }
.stat-label { font-size: 13px; color: rgba(255,255,255,0.4); width: 100%; margin-top: 4px; }

/* ==================== Buttons ==================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 32px; font-size: 14px; font-weight: 500; border-radius: 8px;
  border: none; cursor: pointer; transition: all 0.3s;
}
.btn-primary { background: #2563eb; color: #fff; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(37,99,235,0.35); }
.btn-ghost { background: transparent; color: rgba(255,255,255,0.7); border: 1.5px solid rgba(255,255,255,0.2); }
.btn-ghost:hover { border-color: rgba(255,255,255,0.5); color: #fff; }

/* ==================== Sections Common ==================== */
.section { padding: 120px 0; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag {
  display: inline-block; font-size: 11px; font-weight: 500;
  letter-spacing: 3px; color: #2563eb; margin-bottom: 16px; text-transform: uppercase;
}
.section-title { font-size: 36px; font-weight: 700; color: #1a1a2e; margin-bottom: 16px; letter-spacing: -0.5px; }
.section-desc { font-size: 15px; color: #8a8a9e; max-width: 560px; margin: 0 auto; line-height: 1.7; }

/* ==================== About ==================== */
.about { background: #f8f9fc; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; margin-bottom: 80px; }
.about-visual { display: flex; justify-content: center; }
.about-image-box {
  position: relative; width: 500px; height: 400px;
  display: flex; align-items: center; justify-content: center; overflow: hidden; border-radius: 20px;
}
.about-image-box img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
.about-image-box:hover img { transform: scale(1.03); }
.about-glow {
  position: absolute; width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(37,99,235,0.12), transparent 70%);
  border-radius: 50%; animation: pulse 4s ease-in-out infinite; pointer-events: none;
}
@keyframes pulse { 0%, 100% { transform: scale(1); opacity: 0.6; } 50% { transform: scale(1.2); opacity: 1; } }
.about-text h3 { font-size: 28px; font-weight: 700; color: #1a1a2e; line-height: 1.3; margin-bottom: 20px; }
.about-text p { font-size: 15px; color: #6a6a7e; line-height: 1.8; margin-bottom: 16px; }
.about-text strong { color: #2563eb; }
.about-four { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 28px; }
.four-item {
  padding: 16px 12px; text-align: center; background: #fff; border-radius: 10px;
  border: 1px solid #e8e8f0; font-size: 13px; font-weight: 600; color: #1a1a2e;
}
.four-num { color: #2563eb; display: block; font-size: 18px; font-weight: 700; margin-bottom: 4px; }

/* ==================== Timeline ==================== */
.timeline { margin-bottom: 80px; }
.timeline-title { font-size: 24px; font-weight: 700; color: #1a1a2e; margin-bottom: 32px; text-align: center; }
.timeline-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.timeline-item { padding: 20px; background: #fff; border-radius: 12px; border: 1px solid #e8e8f0; transition: all 0.3s; }
.timeline-item:hover { border-color: #bfdbfe; box-shadow: 0 4px 20px rgba(0,0,0,0.04); }
.timeline-year { font-size: 13px; font-weight: 600; color: #2563eb; display: block; margin-bottom: 6px; }
.timeline-item p { font-size: 14px; color: #5a5a6e; line-height: 1.6; }

/* ==================== Four Base ==================== */
.four-base { }
.base-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.base-card { padding: 32px 24px; background: linear-gradient(145deg, #0f172a, #1a2744); border-radius: 16px; border: 1px solid rgba(255,255,255,0.06); transition: all 0.4s; }
.base-card:hover { transform: translateY(-6px); border-color: rgba(59,130,246,0.3); box-shadow: 0 12px 40px rgba(0,0,0,0.2); }
.base-icon { color: #60a5fa; margin-bottom: 16px; }
.base-card h4 { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 10px; }
.base-card p { font-size: 13px; color: rgba(255,255,255,0.5); line-height: 1.7; }

/* ==================== Products ==================== */
.products { background: #fff; }
.product-category { font-size: 20px; font-weight: 700; color: #1a1a2e; margin-bottom: 8px; margin-top: 48px; }
.product-category:first-of-type { margin-top: 0; }
.product-category-desc { font-size: 14px; color: #888; margin-bottom: 28px; line-height: 1.5; }

/* 产品分类导航 */
.product-categories { display: flex; gap: 12px; margin-bottom: 48px; flex-wrap: wrap; }
.cat-item {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  flex: 1; min-width: 120px; padding: 24px 16px;
  background: #f8f9fa; border-radius: 12px;
  transition: all 0.3s; text-align: center; cursor: pointer;
}
.cat-item:hover { background: #e8f4ff; transform: translateY(-6px); box-shadow: 0 12px 32px rgba(0,0,0,0.08); }
.cat-item .cat-icon { font-size: 32px; }
.cat-item .cat-name { font-size: 16px; font-weight: 600; color: #333; }
.cat-item .cat-sub { font-size: 13px; color: #999; }

.product-showcase { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.product-card {
  border-radius: 14px; overflow: hidden; background: #fff;
  border: 1px solid #eeeef4; transition: all 0.4s;
}
.product-card:hover { transform: translateY(-8px); box-shadow: 0 24px 60px rgba(0,0,0,0.08); }
.product-link { display: block; text-decoration: none; color: inherit; }
.product-image {
  position: relative; height: 280px; display: flex;
  align-items: center; justify-content: center; cursor: pointer; overflow: hidden;
}
.product-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.product-card:hover .product-image img { transform: scale(1.05); }
.product-overlay {
  position: absolute; inset: 0; background: linear-gradient(180deg, rgba(15,23,42,0.85) 0%, rgba(15,23,42,0.95) 100%);
  display: flex; flex-direction: column; justify-content: center;
  padding: 28px; opacity: 0; transition: all 0.4s;
}
.product-card:hover .product-overlay { opacity: 1; }
.product-overlay h3 { color: #fff; font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.product-overlay p { color: rgba(255,255,255,0.5); font-size: 13px; margin-bottom: 14px; }
.product-overlay ul { display: flex; flex-direction: column; gap: 5px; }
.product-overlay li { font-size: 13px; color: rgba(255,255,255,0.65); padding-left: 14px; position: relative; }
.product-overlay li::before { content: '▸'; position: absolute; left: 0; color: #60a5fa; }
.product-info { padding: 20px 22px; }
.product-info h3 { font-size: 15px; font-weight: 600; color: #1a1a2e; margin-bottom: 2px; }
.product-info p { font-size: 13px; color: #9a9aaa; }
.product-more { font-size: 13px; font-weight: 500; color: #2563eb; display: inline-block; margin-top: 8px; opacity: 0; transition: all 0.3s; }
.product-card:hover .product-more { opacity: 1; }

/* Mounts */
.mount-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.mount-card { padding: 24px 16px; border-radius: 12px; background: #f8f9fc; border: 1px solid #e8e8f0; text-align: center; transition: all 0.3s; }
.mount-card:hover { border-color: #bfdbfe; background: #f0f4ff; transform: translateY(-3px); }
.mount-icon { color: #2563eb; margin-bottom: 10px; }
.mount-card h4 { font-size: 13px; font-weight: 500; color: #1a1a2e; }

/* ==================== Platform ==================== */
.platform { background: linear-gradient(135deg, #ff7a45, #fa8c16); }
.platform .section-tag { color: rgba(255,255,255,0.7); }
.platform .section-title { color: #fff; }
.platform .section-desc { color: rgba(255,255,255,0.8); }
.platform-showcase { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: start; }
.matrix-grid { display: flex; flex-direction: column; gap: 12px; }
.matrix-item { padding: 24px; border-radius: 12px; border: 1px solid #e8e8f0; background: #fff; }
.matrix-item h4 { font-size: 15px; font-weight: 600; color: #1a1a2e; margin-bottom: 12px; }
.matrix-item ul { display: flex; flex-wrap: wrap; gap: 8px; }
.matrix-item li { padding: 5px 12px; font-size: 13px; background: #f0f2f8; border-radius: 6px; color: #4a4a5a; }
.matrix-inspect { border-left: 3px solid #2563eb; }
.matrix-service { border-left: 3px solid #059669; }
.matrix-eco { border-left: 3px solid #d97706; }
.platform-features { display: flex; flex-direction: column; gap: 16px; }
.platform-feature { display: flex; gap: 16px; padding: 24px; background: rgba(255,255,255,0.1); border-radius: 12px; border: 1px solid rgba(255,255,255,0.15); }
.pf-icon { width: 48px; height: 48px; border-radius: 12px; background: rgba(255,255,255,0.15); display: flex; align-items: center; justify-content: center; color: #fff; flex-shrink: 0; }
.platform-feature h4 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 4px; }
.platform-feature p { font-size: 13px; color: rgba(255,255,255,0.75); }

/* ==================== Solutions ==================== */
.solution-card { background: #fff; border-radius: 16px; overflow: hidden; border: 1px solid #e8e8f0; transition: all 0.3s; position: relative; }
.solution-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.06); border-color: #bfdbfe; }
.solution-body { padding: 32px; }
.solution-number {
  font-size: 48px; font-weight: 800; color: rgba(37,99,235,0.06);
  position: absolute; top: 12px; right: 20px; line-height: 1;
}
.solution-body h3 { font-size: 20px; font-weight: 700; color: #0f172a; margin-bottom: 4px; }
.solution-land { font-size: 14px; color: #2563eb; font-weight: 600; margin-bottom: 16px; }
.solution-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.solution-tags span { font-size: 13px; padding: 5px 14px; background: #f0f2f8; border-radius: 20px; color: #4a4a5a; }
.solution-scenes { display: flex; flex-wrap: wrap; gap: 8px; }
.solution-scenes span { font-size: 13px; padding: 5px 14px; background: #f0f4ff; border-radius: 20px; color: #2563eb; }
.solution-list { list-style: none; padding: 0; margin: 0; }
.solution-list li { padding: 6px 0; font-size: 14px; color: #4b5563; line-height: 1.6; }
.solution-list li::before { content: '▸ '; color: #2563eb; }

/* 四大基座配色 */
.solution-base { border-top: 4px solid #059669; }
.solution-platform { border-top: 4px solid #2563eb; }
.solution-compute { border-top: 4px solid #d97706; }
.solution-line { border-top: 4px solid #7c3aed; }

/* ==================== Cases ==================== */
.cases { background: #f8f9fc; }
.cases-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-bottom: 48px; }
.case-category h3 { font-size: 16px; font-weight: 600; color: #1a1a2e; margin-bottom: 14px; }
.case-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.case-tags span { padding: 6px 14px; font-size: 13px; background: #fff; border: 1px solid #e8e8f0; border-radius: 8px; color: #4a4a5a; transition: all 0.2s; }
.case-tags span:hover { border-color: #2563eb; color: #2563eb; }
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card { background: #fff; border-radius: 14px; overflow: hidden; border: 1px solid #e8e8f0; transition: all 0.3s; }
.case-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.06); }
.case-image { height: 140px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.case-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.case-card:hover .case-image img { transform: scale(1.05); }
.case-content { padding: 20px; }
.case-content h3 { font-size: 15px; font-weight: 600; color: #1a1a2e; margin-bottom: 6px; }
.case-content p { font-size: 13px; color: #6a6a7e; margin-bottom: 12px; }
.case-content ul { display: flex; flex-wrap: wrap; gap: 6px; }
.case-content li { font-size: 12px; padding: 3px 10px; background: #f0f2f8; border-radius: 5px; color: #4a4a5a; }

/* ==================== Moat ==================== */
.moat { background: #080c18; }
.moat .section-tag { color: rgba(255,255,255,0.4); }
.moat .section-title { color: #fff; }
.moat .section-desc { color: rgba(255,255,255,0.35); }
.moat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.moat-card { padding: 32px; border-radius: 14px; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06); transition: all 0.3s; }
.moat-card:hover { background: rgba(255,255,255,0.06); border-color: rgba(59,130,246,0.25); transform: translateY(-4px); }
.moat-num { font-size: 28px; font-weight: 700; color: #3b82f6; margin-bottom: 14px; }
.moat-card h3 { font-size: 17px; font-weight: 600; color: #fff; margin-bottom: 10px; }
.moat-card p { font-size: 14px; color: rgba(255,255,255,0.4); line-height: 1.7; }

/* ==================== Global ==================== */
.global {
  background: url('../images/haiwai.png') center/cover no-repeat;
}
.global-content { text-align: center; }
.global .section-title { color: #fff; }
.global .section-tag { color: rgba(255,255,255,0.6); }
.global-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin: 48px 0 32px; }
.global-card { padding: 32px 20px; background: #fff; border-radius: 14px; border: 1px solid #e8e8f0; text-align: center; transition: all 0.3s; }
.global-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.04); }
.global-card svg { color: #2563eb; margin-bottom: 14px; }
.global-card h4 { font-size: 16px; font-weight: 600; color: #1a1a2e; margin-bottom: 6px; }
.global-card p { font-size: 13px; color: #7a7a8e; }
.global-note { font-size: 14px; color: #fff; max-width: 720px; margin: 0 auto; line-height: 1.8; }

/* ==================== Contact ==================== */
.contact { background: #f8f9fc; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.contact-info .section-tag { margin-bottom: 16px; }
.contact-info h2 { font-size: 30px; font-weight: 700; color: #1a1a2e; margin-bottom: 14px; }
.contact-info > p { font-size: 15px; color: #7a7a8e; margin-bottom: 32px; }
.contact-list { display: flex; flex-direction: column; gap: 18px; }
.contact-item { display: flex; align-items: center; gap: 12px; font-size: 14px; color: #4a4a5a; }
.contact-item svg { color: #2563eb; flex-shrink: 0; }
.contact-form { display: flex; flex-direction: column; gap: 16px; padding: 36px; background: #fff; border-radius: 14px; border: 1px solid #e8e8f0; }
.form-group { display: flex; gap: 16px; }
.form-group input, .contact-form textarea { width: 100%; padding: 14px 16px; border: 1.5px solid #e8e8f0; border-radius: 8px; font-size: 14px; font-family: inherit; transition: all 0.2s; background: #fafafa; }
.form-group input:focus, .contact-form textarea:focus { outline: none; border-color: #2563eb; box-shadow: 0 0 0 3px rgba(37,99,235,0.06); background: #fff; }
.contact-form textarea { resize: vertical; }

/* ==================== Footer ==================== */
.footer { background: #080c18; color: rgba(255,255,255,0.5); padding: 80px 0 0; }
.footer-main { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.04); }
.footer-brand .logo { color: #fff; margin-bottom: 14px; }
.footer-brand p { font-size: 14px; line-height: 1.7; max-width: 280px; color: rgba(255,255,255,0.4); }
.footer-links h4 { color: #fff; font-size: 14px; font-weight: 600; margin-bottom: 16px; }
.footer-links a { display: block; font-size: 13px; color: rgba(255,255,255,0.35); margin-bottom: 10px; transition: color 0.2s; }
.footer-links a:hover { color: #60a5fa; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding: 24px 0; font-size: 13px; }
.footer-legal { color: rgba(255,255,255,0.2); max-width: 300px; text-align: right; }

/* ==================== Scroll Animation ==================== */
.fade-in { opacity: 0; transform: translateY(30px); transition: all 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94); }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ==================== Mobile ==================== */
@media (max-width: 1024px) {
  .container { padding: 0 24px; }
  .header-inner { padding: 0 24px; }
  .product-showcase { grid-template-columns: repeat(2, 1fr); }
  .mount-grid { grid-template-columns: repeat(3, 1fr); }
  .timeline-grid { grid-template-columns: repeat(2, 1fr); }
  .base-grid, .moat-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 32px; }
  .about-grid { gap: 48px; }
  .platform-showcase { gap: 28px; }
}
@media (max-width: 768px) {
  /* Header & Nav */
  .header { height: 64px; }
  .header-inner { padding: 0 16px; height: 64px; }
  .logo span { font-size: 15px; }
  .nav {
    display: flex; position: fixed; top: 64px; left: 0; right: 0;
    background: rgba(255,255,255,0.98); backdrop-filter: blur(20px);
    flex-direction: column; padding: 16px; gap: 4px;
    transform: translateY(-110%); opacity: 0;
    transition: all 0.3s ease;
    border-bottom: 1px solid #e8e8f0;
    max-height: calc(100vh - 64px); overflow-y: auto;
  }
  .nav.open { transform: translateY(0); opacity: 1; }
  .nav a { padding: 12px 16px; font-size: 15px; border-radius: 8px; }
  .dropdown-trigger { padding: 12px 16px; font-size: 15px; width: 100%; }
  .nav-dropdown { width: 100%; }
  .dropdown-menu {
    position: static; transform: none; box-shadow: none;
    border: none; padding: 0 0 0 16px; opacity: 1; visibility: visible;
    background: transparent; min-width: auto;
  }
  .header:not(.scrolled) .nav { background: rgba(255,255,255,0.98); }
  .menu-toggle { display: flex; }

  /* Hero */
  .hero { min-height: auto; min-height: 100dvh; }
  .hero-content { padding: 90px 20px 60px; }
  .hero-title { font-size: 32px; letter-spacing: -0.5px; margin-bottom: 18px; }
  .hero-badge { font-size: 10px; letter-spacing: 2px; padding: 5px 12px; margin-bottom: 24px; }
  .hero-desc { font-size: 14px; line-height: 1.7; max-width: 100%; margin-bottom: 32px; }
  .hero-desc br { display: none; }
  .hero-actions { flex-direction: column; gap: 10px; }
  .hero-actions .btn { width: 100%; justify-content: center; padding: 14px 24px; }
  .hero-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px 24px; margin-top: 40px; padding-top: 24px; }
  .stat-item { justify-content: center; }
  .stat-num { font-size: 26px; }
  .stat-suffix { font-size: 15px; }

  /* Section Common */
  .section { padding: 70px 0; }
  .section-header { margin-bottom: 44px; }
  .section-title { font-size: 26px; letter-spacing: -0.3px; }
  .section-desc { font-size: 14px; }

  /* About */
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .about-image-box { width: 100%; max-width: 380px; height: 280px; margin: 0 auto; }
  .about-text h3 { font-size: 22px; margin-bottom: 16px; }
  .about-text p { font-size: 14px; }
  .about-four { grid-template-columns: repeat(2, 1fr); }

  /* Timeline */
  .timeline-title { font-size: 20px; margin-bottom: 24px; }
  .timeline-grid { grid-template-columns: 1fr; gap: 12px; }
  .timeline-item { padding: 16px; }

  /* Base Cards */
  .base-grid { grid-template-columns: 1fr; gap: 14px; }
  .base-card { padding: 24px 20px; }

  /* Products */
  .products { overflow: hidden; }
  .product-categories { flex-direction: column; gap: 10px; }
  .cat-item { flex-direction: row; text-align: left; padding: 16px 20px; min-width: auto; }
  .cat-item img { height: 44px; margin-bottom: 0; }
  .cat-item .cat-name { font-size: 15px; }
  .mount-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .mount-card { padding: 18px 12px; }
  .product-showcase { grid-template-columns: 1fr; }
  .product-image { height: 220px; }

  /* Platform */
  .platform-showcase { grid-template-columns: 1fr; gap: 24px; }
  .platform-feature { padding: 18px; gap: 12px; }
  .pf-icon { width: 40px; height: 40px; }

  /* Solutions - 响应式处理 */
  .solutions-cards { grid-template-columns: 1fr !important; gap: 16px !important; }
  .solution-body { padding: 24px 20px; }
  .solution-number { font-size: 36px; }

  /* Cases */
  .cases-tabs { grid-template-columns: 1fr; gap: 20px; }
  .cases-grid { grid-template-columns: 1fr; gap: 16px; }
  .case-image { height: 180px; }

  /* Moat */
  .moat-grid { grid-template-columns: 1fr; gap: 14px; }
  .moat-card { padding: 24px 18px; }

  /* Global */
  .global { background-size: cover; background-position: center top; }
  .global-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 32px 0 24px; }
  .global-card { padding: 24px 16px; }
  .global-note { font-size: 13px; }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .contact-info h2 { font-size: 24px; }
  .contact-form { padding: 24px 18px; }
  .form-group { flex-direction: column; gap: 12px; }

  /* Footer */
  .footer { padding: 56px 0 0; }
  .footer-main { grid-template-columns: 1fr; gap: 28px; padding-bottom: 32px; }
  .footer-brand p { max-width: 100%; }
  .footer-bottom { flex-direction: column; gap: 6px; text-align: center; font-size: 12px; }
  .footer-legal { text-align: center; max-width: 100%; }

  /* Partners */
  [style*="display:flex"][style*="justify-content:center"][style*="gap:60px"] {
    gap: 30px !important;
  }
  [style*="display:flex"][style*="justify-content:center"] img[style*="height:90px"] {
    height: 60px !important;
  }
}

/* 解决方案内联样式响应式修复 - 移动端竖向布局 */
@media (max-width: 768px) {
  #solutions [style*="grid-template-columns:repeat(4,1fr)"] {
    display: flex !important;
    flex-direction: column !important;
    gap: 14px !important;
  }
  #solutions [style*="padding:32px"] { padding: 22px 18px !important; }
  #solutions [style*="font-size:17px"] { font-size: 16px !important; }
  #solutions [style*="font-size:14px"] { font-size: 13px !important; }
  #solutions [style*="width:44px;height:44px"] { width: 38px; height: 38px; }
  #solutions [style*="padding:4px 10px"] { padding: 3px 8px !important; font-size: 11px !important; }
  #solutions [style*="padding:80px 0 0"] { padding: 50px 16px 0 !important; }
  #solutions [style*="padding:60px 0"] { padding: 40px 16px !important; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .header-inner { padding: 0 12px; }

  /* Hero */
  .hero-content { padding: 80px 16px 50px; }
  .hero-title { font-size: 26px; letter-spacing: -0.3px; }
  .hero-badge { font-size: 9px; letter-spacing: 1.5px; padding: 4px 10px; }
  .hero-desc { font-size: 13px; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 16px 20px; }
  .stat-num { font-size: 22px; }
  .stat-suffix { font-size: 13px; }
  .stat-label { font-size: 11px; }

  /* Sections */
  .section { padding: 52px 0; }
  .section-header { margin-bottom: 36px; }
  .section-title { font-size: 22px; }
  .section-tag { font-size: 10px; letter-spacing: 2px; }

  /* About */
  .about-grid { gap: 28px; }
  .about-image-box { height: 220px; border-radius: 14px; }
  .about-text h3 { font-size: 19px; }
  .about-text p { font-size: 13px; }
  .about-four { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .four-item { padding: 12px 8px; font-size: 12px; }

  /* Timeline */
  .timeline-title { font-size: 18px; margin-bottom: 20px; }
  .timeline-item { padding: 14px; }
  .timeline-year { font-size: 12px; }
  .timeline-item p { font-size: 13px; }

  /* Products */
  .cat-item { padding: 14px 16px; }
  .cat-item img { height: 38px; }
  .cat-item .cat-name { font-size: 14px; }
  .cat-item .cat-sub { font-size: 12px; }
  .mount-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .mount-card { padding: 16px 10px; }
  .product-category { font-size: 17px; margin-top: 36px; }
  .product-image { height: 200px; }

  /* Platform */
  .matrix-item { padding: 18px 16px; }
  .matrix-item h4 { font-size: 14px; }
  .matrix-item li { padding: 4px 10px; font-size: 12px; }
  .platform-feature { padding: 16px; gap: 10px; }
  .pf-icon { width: 36px; height: 36px; }
  .pf-icon svg { width: 22px; height: 22px; }
  .platform-feature h4 { font-size: 14px; }
  .platform-feature p { font-size: 12px; }

  /* Solutions - 竖向布局小屏适配 */
  #solutions [style*="padding:22px 18px"] { padding: 18px 14px !important; }
  #solutions [style*="font-size:16px"] { font-size: 15px !important; }
  #solutions [style*="font-size:13px"] { font-size: 12px !important; }

  /* Cases */
  .case-card { border-radius: 12px; }
  .case-image { height: 160px; }
  .case-content { padding: 16px; }
  .case-content h3 { font-size: 14px; }
  .case-content p { font-size: 12px; }
  .case-content li { font-size: 11px; padding: 2px 8px; }

  /* Global */
  .global-grid { grid-template-columns: 1fr; gap: 12px; margin: 24px 0 20px; }
  .global-card { padding: 20px 16px; }
  .global-note { font-size: 12px; }

  /* Contact */
  .contact-info h2 { font-size: 21px; }
  .contact-info > p { font-size: 13px; }
  .contact-item { font-size: 13px; gap: 10px; }
  .contact-form { padding: 20px 16px; }
  .form-group input,
  .contact-form textarea { padding: 12px 14px; font-size: 14px; }
  .contact-form textarea { min-height: 100px; }

  /* Footer */
  .footer { padding: 44px 0 0; }
  .footer-main { gap: 24px; padding-bottom: 24px; }
  .footer-links a { font-size: 12px; margin-bottom: 8px; }
  .footer-bottom { font-size: 11px; }
}