/* ====== Reset & Base ====== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  color: #333; background: #eef2f6; line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ====== Header ====== */
.header {
  background: #fff;
  padding: 24px 24px 18px;
  border-bottom: 2px solid #1565C0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.10);
  max-width: 1100px; margin: 0 auto;
}
.header-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.header-left { flex: 1; }
.header-left .logo { font-size: 26px; font-weight: 600; color: #0d2137; letter-spacing: 3px; line-height: 1.2; }
.header-left .sub { font-size: 12px; color: #6b7d8e; margin-top: 2px; letter-spacing: 2px; font-weight: 400; }
.header-left .badge-row { margin-top: 8px; display: flex; gap: 8px; flex-wrap: wrap; }
.header-left .badge-row .tag {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 1.5px;
  padding: 4px 14px;
}
.tag-red { background: #1565C0; color: #fff; }
.tag-outline { border: 1px solid #1565C0; color: #1565C0; font-weight: 700; }

.header-right { flex-shrink: 0; text-align: right; }
.header-contact-card {
  background: #fff; border: 1px solid #d0dce8; padding: 14px 20px;
  display: inline-block; text-align: left;
}
.contact-row { display: flex; gap: 20px; align-items: center; }
.contact-item { display: flex; align-items: center; gap: 6px; }
.contact-item:last-of-type { margin-bottom: 0; }
.contact-icon { font-size: 18px; flex-shrink: 0; }
.contact-label { font-size: 12px; color: #6b7d8e; letter-spacing: 1px; display: inline; margin-right: 6px; }
.contact-phone { font-size: 15px; font-weight: 700; color: #1565C0; text-decoration: none; }
.contact-phone:hover { color: #0D47A1; }
.contact-wechat { font-size: 11px; color: #8a9ba8; margin-top: 4px; padding-top: 4px; border-top: 1px solid #e8f0f8; letter-spacing: 1px; }
.header-address { font-size: 11px; color: #8a9ba8; margin-top: 6px; letter-spacing: 0.5px; }
.header-spacer { height: 30px; }

/* ====== Sticky Nav ====== */
.nav {
  position: sticky; top: 0; z-index: 100;
  max-width: 1100px; margin: 0 auto;
  background: linear-gradient(180deg, #0d4f8c 0%, #1565C0 25%, #1E88E5 50%, #1565C0 75%, #0d4f8c 100%);
  box-shadow: 0 3px 14px rgba(0,0,0,0.25);
  border-top: 1px solid rgba(255,255,255,0.08);
}
.nav::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.15) 20%, rgba(255,255,255,0.25) 50%, rgba(255,255,255,0.15) 80%, transparent 100%);
}
.nav-inner { max-width: 1100px; margin: 0 auto; display: flex; justify-content: center; position: relative; z-index: 1; }
.nav-inner a {
  display: block; padding: 8px 18px; font-size: 14px; font-weight: 600;
  color: rgba(255,255,255,0.92); letter-spacing: 1.5px; transition: all 0.25s ease; text-align: center;
  border-bottom: 2px solid transparent;
  text-shadow: 0 1px 2px rgba(0,0,0,0.25);
}
.nav-inner a:hover, .nav-inner a.active { color: #fff; background: rgba(255,255,255,0.08); border-bottom-color: #90CAF9; letter-spacing: 2px; }

/* ====== Section Common ====== */
.sec { padding: 48px 24px; max-width: 1100px; margin: 0 auto; }
.sec-white { background: #fff; }
.sec-gray { background: #e8f0f8; }
.sec-warm { background: #f0f4f8; }
.sec-cool { background: #eaf0f6; }
.sec-dark { background: linear-gradient(180deg, #0d2137 0%, #0a1628 100%); color: #fff; }
.sec-inner { margin: 0 auto; }

.sec-head { text-align: center; margin-bottom: 44px; }
.sec-head h2 { font-size: 24px; font-weight: 600; letter-spacing: 3px; color: #0d2137; }
.sec-dark .sec-head h2 { color: #fff; }
.sec-head .line {
  display: block; width: 60px; height: 1px; background: #1565C0; margin: 16px auto 0;
  position: relative;
}
.sec-head .line::after {
  content: ""; display: block; width: 6px; height: 6px;
  background: #1565C0; border-radius: 50%;
  position: absolute; top: -2.5px; left: 50%; margin-left: -3px;
}

/* ====== 公司介绍 ====== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: start; }
.about-left p { font-size: 15px; color: #555; line-height: 2; margin-bottom: 12px; }
.about-left strong { color: #0d2137; }
.about-right { display: flex; flex-direction: column; gap: 10px; }
.badge-card {
  display: flex; align-items: center; gap: 14px;
  padding: 18px 22px; background: #f8fafc;
  border-left: 2px solid #1565C0;
  transition: all 0.25s ease;
}
.badge-card:hover { border-left-color: #0d2137; background: #fff; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.badge-card .icon { font-size: 26px; flex-shrink: 0; }
.badge-card .info { font-size: 14px; color: #666; line-height: 1.6; }
.badge-card .info strong { color: #0d2137; font-weight: 600; }

/* ====== Flow & Area ====== */
.info-row { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-top: 40px; }
.info-block h3 { font-size: 18px; font-weight: 700; color: #0d2137; margin-bottom: 16px; padding-left: 12px; border-left: 3px solid #1565C0; }
.flow-steps { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.flow-step { text-align: center; min-width: 70px; }
.flow-step .num {
  width: 38px; height: 38px; line-height: 38px; border-radius: 50%;
  background: #1565C0; color: #fff; font-weight: 700; font-size: 14px;
  margin: 0 auto 6px;
}
.flow-step .lbl { font-size: 12px; color: #888; }
.flow-arrow { color: #1565C0; font-size: 16px; font-weight: 700; }
.area-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.area-tags span {
  display: inline-block; padding: 7px 18px; font-size: 13px; color: #555;
  background: #fff; border: 1px solid #ddd; transition: 0.15s;
}
.area-tags span:hover { border-color: #1565C0; color: #1565C0; background: #E3F2FD; }

/* ====== 增值服务 ====== */
.vip-row { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 12px; margin-top: 40px; }
.vip-card {
  background: #fff; border: 1px solid #e0e8f0; border-top: 2px solid #1565C0;
  padding: 22px 18px; text-align: center; transition: all 0.25s ease;
}
.vip-card:hover { border-top-color: #0d2137; box-shadow: 0 4px 12px rgba(0,0,0,0.06); transform: translateY(-2px); }
.vip-card .vip-icon { font-size: 32px; margin-bottom: 10px; }
.vip-card .vip-title { font-size: 14px; font-weight: 700; color: #0d2137; margin-bottom: 4px; }
.vip-card .vip-desc { font-size: 12px; color: #999; line-height: 1.6; }

/* ====== 产品介绍 ====== */
.biz-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.biz-card {
  background: #fff; border: 1px solid #d0dce8; border-left: 2px solid #1565C0;
  padding: 28px 24px; transition: all 0.25s ease;
}
.biz-card:hover { border-left-color: #0d2137; box-shadow: 0 6px 18px rgba(0,0,0,0.06); transform: translateY(-2px); }
.biz-card h3 { font-size: 16px; font-weight: 700; color: #0d2137; margin-bottom: 10px; }
.biz-card p { font-size: 13px; color: #666; line-height: 1.8; }
.biz-card .biz-why { font-size: 12px; color: #1565C0; margin-top: 10px; padding-top: 10px; border-top: 1px solid #e8f0f8; }

.product-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px; }
.product-card {
  background: #fff; border: 1px solid #d0dce8; overflow: hidden;
  transition: all 0.3s ease;
}
.product-card:hover { box-shadow: 0 8px 24px rgba(0,0,0,0.08); transform: translateY(-3px); }
.product-card img { width: 100%; display: block; }
.product-card .p-title { padding: 14px 12px; font-size: 14px; font-weight: 600; color: #444; text-align: center; background: #f8fafc; }

.ai-banner {
  margin-top: 32px; background: linear-gradient(135deg, #0d2137 0%, #0a3d6b 100%);
  color: #fff; padding: 40px 44px; position: relative; overflow: hidden;
}
.ai-banner::before {
  content: ""; position: absolute; top: -30px; right: -30px;
  width: 120px; height: 120px; border: 2px solid rgba(21,101,192,0.2); border-radius: 50%;
}
.ai-banner h3 { font-size: 18px; font-weight: 700; margin-bottom: 14px; color: #fff; }
.ai-banner h3::before { content: "● "; color: #42A5F5; }
.ai-banner p { font-size: 14px; color: #bcc8d4; line-height: 1.9; position: relative; z-index: 1; }
.ai-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; position: relative; z-index: 1; }
.ai-tags span {
  padding: 5px 16px; font-size: 12px; color: #bcc8d4;
  border: 1px solid #3a5070; background: rgba(255,255,255,0.04); transition: 0.15s;
}
.ai-tags span:hover { border-color: #42A5F5; color: #fff; background: rgba(21,101,192,0.15); }

/* ====== 方案介绍 ====== */
.sol-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.sol-card {
  background: #f8fafc; border: 1px solid #d0dce8; border-top: 2px solid #1565C0;
  padding: 24px; transition: all 0.25s ease;
}
.sol-card:hover { border-top-color: #0d2137; box-shadow: 0 6px 18px rgba(0,0,0,0.06); }
.sol-card .sol-num {
  display: inline-block; width: 28px; height: 28px; line-height: 28px;
  text-align: center; border-radius: 50%; background: #1565C0; color: #fff;
  font-size: 12px; font-weight: 700; margin-bottom: 8px;
}
.sol-card h3 { font-size: 16px; font-weight: 700; color: #0d2137; margin-bottom: 4px; }
.sol-card .scene { font-size: 12px; color: #1565C0; font-weight: 600; margin-bottom: 8px; }
.sol-card .desc { font-size: 13px; color: #666; line-height: 1.8; }

.pkg-grid { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 16px; margin-top: 36px; }
.pkg-card {
  background: #fff; border: 1px solid #d0dce8; border-top: 2px solid #1565C0;
  padding: 32px 20px; text-align: center; transition: all 0.25s ease;
}
.pkg-card:hover { border-top-color: #0d2137; box-shadow: 0 8px 24px rgba(0,0,0,0.06); transform: translateY(-3px); }
.pkg-card .pkg-icon { font-size: 38px; margin-bottom: 14px; }
.pkg-card .pkg-name { font-size: 15px; font-weight: 700; color: #0d2137; margin-bottom: 10px; }
.pkg-card .pkg-items { font-size: 13px; color: #888; line-height: 2; }

/* ====== 案例展示 ====== */
.case-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.case-card {
  background: #fff; border: 1px solid #d0dce8; border-left: 2px solid #1565C0;
  padding: 24px; transition: all 0.25s ease;
}
.case-card:hover { border-left-color: #0d2137; box-shadow: 0 6px 18px rgba(0,0,0,0.06); transform: translateY(-2px); }
.case-card .case-icon { font-size: 34px; margin-bottom: 10px; }
.case-card .case-title { font-size: 15px; font-weight: 700; color: #0d2137; margin-bottom: 10px; }
.case-card .case-detail { font-size: 13px; color: #888; line-height: 1.9; }
.case-card .case-detail b { color: #555; }

/* ====== FAQ ====== */
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 20px; }
.faq-grid details {
  background: #fff; border: 1px solid #d0dce8;
  padding: 14px 18px; transition: all 0.25s ease;
  align-self: start;
}
.faq-grid details:hover { border-color: #1565C0; }
.faq-grid details[open] { background: #fff; border-color: #1565C0; border-left: 2px solid #1565C0; }
.faq-grid details summary {
  font-weight: 600; font-size: 14px; color: #0d2137; cursor: pointer;
  list-style: none; display: flex; align-items: center; justify-content: space-between;
}
.faq-grid details summary::-webkit-details-marker { display: none; }
.faq-grid details summary::after {
  content: "+"; font-size: 18px; color: #1565C0; font-weight: 400;
  transition: 0.2s; margin-left: 10px; flex-shrink: 0;
}
.faq-grid details[open] summary::after { content: "−"; }
.faq-grid details[open] summary { color: #1565C0; }
.faq-grid details p {
  margin-top: 10px; color: #666; font-size: 13px; line-height: 1.8;
  border-top: 1px solid #e8f0f8; padding-top: 10px;
}

/* ====== Photo Placeholder ====== */
.photo-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px; }
.photo-placeholder {
  background: #f5f8fa; border: 2px dashed #c0ccd8;
  aspect-ratio: 4/3;
  display: flex; align-items: center; justify-content: center;
  color: #a0aeb8; font-size: 13px; letter-spacing: 1px;
  transition: all 0.2s;
}
.photo-placeholder:hover { border-color: #1565C0; color: #1565C0; background: #E3F2FD; }
.photo-placeholder img { width: 100%; height: 100%; object-fit: cover; display: none; }
.photo-placeholder.filled { border-style: solid; border-color: #d0dce8; }
.photo-placeholder.filled span { display: none; }
.photo-placeholder.filled img { display: block; }
.case-photo {
  width: 100%; aspect-ratio: 16/10; background: #f5f8fa;
  border: 1px dashed #c0ccd8; margin-bottom: 14px;
  display: flex; align-items: center; justify-content: center;
  color: #a0aeb8; font-size: 12px; letter-spacing: 1px;
  overflow: hidden;
}
.case-photo img { width: 100%; height: 100%; object-fit: cover; display: none; }
.case-photo.filled { border-style: solid; border-color: #d0dce8; }
.case-photo.filled span { display: none; }
.case-photo.filled img { display: block; }

/* ====== Hero Carousel ====== */
.hero-carousel {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  overflow: hidden;
  position: relative;
}
.hero-track {
  display: flex;
  transition: transform 0.5s ease;
}
.hero-slide {
  flex: 0 0 100%;
  position: relative;
  line-height: 0;
}
.hero-slide img {
  width: 100%;
  height: auto;
  display: block;
  max-height: 230px;
  object-fit: cover;
  object-position: center;
}
.hero-label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.55));
  color: #fff;
  padding: 30px 24px 14px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 2px;
  text-align: center;
}
.hero-dots {
  text-align: center;
  padding: 12px 0 6px;
}
.hero-dots .dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #c0ccd8;
  margin: 0 5px;
  cursor: pointer;
  transition: all 0.3s;
}
.hero-dots .dot.active {
  background: #1565C0;
  width: 24px;
  border-radius: 4px;
}

/* ====== CTA ====== */
.cta-hint {
  margin-top: 36px; text-align: center;
  font-size: 14px; color: #1565C0; letter-spacing: 1px;
}
.cta-hint a { color: #1565C0; font-weight: 600; text-decoration: underline; }
.cta-hint a:hover { color: #0D47A1; }

/* ====== 联系我们 ====== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.sec-dark .contact-left h2 { font-size: 26px; font-weight: 700; color: #fff; margin-bottom: 20px; letter-spacing: 2px; }
.sec-dark .contact-left p { color: #bcc8d4; font-size: 15px; margin-bottom: 6px; line-height: 2; }
.sec-dark .contact-left .shop-name { font-size: 20px; color: #fff; font-weight: 700; margin-bottom: 14px; }
.contact-right { text-align: center; }
.contact-right .phone-big {
  display: block; font-size: 32px; font-weight: 700; color: #64B5F6;
  margin-bottom: 4px; transition: 0.15s;
}
.contact-right .phone-big:hover { color: #90CAF9; }
.contact-right .phone-label { font-size: 14px; color: #8a9ba8; margin-bottom: 16px; }
.contact-right .qrcode-hint {
  margin-top: 20px; font-size: 13px; color: #8a9ba8;
  padding: 10px 24px; border: 1px solid #3a5070; display: inline-block;
}

/* ====== Footer ====== */
.footer {
  background: #0a1628; text-align: center; color: #6b7d8e; font-size: 12px;
  padding: 20px 24px; line-height: 2;
  max-width: 1100px; margin: 0 auto;
}

/* ====== Map Placeholder ====== */
.map-placeholder { transition: all 0.2s; }
.map-placeholder:hover { border-color: #1565C0 !important; color: #1565C0 !important; background: #0d2338 !important; }

/* ====== O2O Trust Loop ====== */
.trust-loop {
  background: linear-gradient(135deg, #0d2137, #1565C0);
  color: #fff; padding: 32px 36px; border-radius: 8px; margin-bottom: 32px;
  text-align: center;
}
.trust-loop h3 {
  font-size: 18px; font-weight: 700; margin-bottom: 16px; letter-spacing: 2px;
}
.trust-loop p {
  font-size: 15px; line-height: 2; color: #d0dce8;
  max-width: 720px; margin: 0 auto;
}
.trust-loop strong { color: #FFD54F; }

/* ====== Responsive ====== */
@media (max-width: 900px) {
  .nav-inner a { padding: 8px 10px; font-size: 12px; letter-spacing: 1px; }
}

@media (max-width: 768px) {
  .nav-inner { flex-wrap: wrap; }
  .nav-inner a { padding: 10px 12px; font-size: 12px; letter-spacing: 1px; }
  .about-grid, .info-row, .contact-grid { grid-template-columns: 1fr; }
  .biz-grid, .case-grid { grid-template-columns: 1fr; }
  .product-row { grid-template-columns: 1fr 1fr; }
  .sol-grid { grid-template-columns: 1fr; }
  .pkg-grid, .vip-row { grid-template-columns: 1fr 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .header .logo { font-size: 22px; letter-spacing: 3px; }
  .header-inner { flex-direction: column; text-align: center; gap: 20px; }
  .header-right { text-align: center; }
  .header .badge-row { justify-content: center; }
  .sec { padding: 40px 16px; }
  .hero-carousel { max-width: 100%; }
  .hero-slide img { max-height: 180px; }
}

@media (max-width: 480px) {
  .header .logo { font-size: 18px; letter-spacing: 2px; }
  .header-left .badge-row { gap: 6px; }
  .header-left .badge-row .tag { font-size: 11px; padding: 4px 10px; letter-spacing: 1px; }
  .nav-inner a { padding: 8px 8px; font-size: 11px; letter-spacing: 0px; }
  .product-row, .pkg-grid, .vip-row { grid-template-columns: 1fr; }
}