:root {
  --brand: #2563eb;
  --brand-light: #3b82f6;
  --success: #22c55e;
  --bg: #f8fafc;
  --card: #ffffff;
  --title: #111827;
  --text: #4b5563;
  --muted: #6b7280;
  --line: #e5e7eb;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 0 max(24px, calc((100vw - 1180px) / 2));
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(229, 231, 235, 0.8);
  backdrop-filter: blur(16px);
}

.site-header.is-scrolled {
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
}

.brand,
.site-nav,
.hero-actions,
.hero-metrics,
.process-list,
.site-footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  color: var(--title);
  font-weight: 700;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  color: #fff;
  background: var(--brand);
  border-radius: 10px;
  font-size: 18px;
}

.site-nav {
  gap: 28px;
  color: var(--text);
  font-size: 15px;
}

.site-nav a,
.nav-cta {
  transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.site-nav a:hover {
  color: var(--brand);
}

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 10px;
  font-weight: 700;
  white-space: nowrap;
}

.nav-cta {
  padding: 0 18px;
  color: #fff;
  background: var(--brand);
}

.nav-cta:hover,
.button:hover {
  transform: translateY(-1px);
}

.section {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 84px 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(420px, 1.12fr);
  align-items: center;
  gap: 44px;
  min-height: calc(100vh - 72px);
  padding-top: 52px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--brand);
  font-size: 14px;
  font-weight: 700;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  color: var(--title);
  line-height: 1.2;
}

h1 {
  margin-bottom: 16px;
  font-size: clamp(42px, 7vw, 72px);
}

h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 48px);
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.hero-subtitle {
  margin-bottom: 16px;
  color: var(--title);
  font-size: 24px;
  font-weight: 700;
}

.hero-copy {
  max-width: 560px;
  margin-bottom: 30px;
  font-size: 20px;
}

.hero-actions {
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 34px;
}

.button {
  min-width: 128px;
  padding: 0 22px;
}

.button-primary {
  color: #fff;
  background: var(--brand);
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.2);
}

.button-secondary {
  color: var(--brand);
  background: #fff;
  border: 1px solid rgba(37, 99, 235, 0.22);
}

.hero-metrics {
  gap: 14px;
  flex-wrap: wrap;
}

.hero-metrics div {
  min-width: 112px;
  padding: 12px 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.hero-metrics strong,
.hero-metrics span {
  display: block;
}

.hero-metrics strong {
  color: var(--title);
  font-size: 22px;
  line-height: 1.2;
}

.hero-metrics span {
  color: var(--muted);
  font-size: 13px;
}

.hero-visual {
  position: relative;
  min-height: 480px;
  overflow: hidden;
  border-radius: 16px;
  background: #fff;
  box-shadow: var(--shadow);
}

.hero-visual img {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  background: #fff;
}

.hero-visual img.is-hidden {
  display: none;
}

.hero-visual img:not([src]),
.hero-visual img[src=""] {
  display: none;
}

.visual-fallback {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(72px, 1fr));
  align-items: center;
  gap: 14px;
  padding: 38px;
  background: linear-gradient(135deg, #f8fbff 0%, #eef6ff 100%);
}

.flow-node {
  position: relative;
  display: grid;
  min-height: 96px;
  place-items: center;
  color: var(--brand);
  background: #fff;
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 16px;
  box-shadow: var(--shadow);
  font-weight: 700;
}

.flow-node:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -22px;
  width: 28px;
  height: 2px;
  background: var(--brand-light);
}

.flow-node-main {
  min-height: 132px;
  color: #fff;
  background: var(--brand);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 34px;
}

.about-section {
  padding-top: 56px;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.about-grid p {
  margin-bottom: 0;
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.advantage-grid,
.store-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.advantage-card,
.store-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.advantage-card {
  padding: 26px;
}

.advantage-card p,
.store-content p,
.contact-copy p {
  margin-bottom: 0;
}

.icon {
  display: inline-block;
  width: 44px;
  height: 44px;
  margin-bottom: 20px;
  border-radius: 12px;
  background: rgba(37, 99, 235, 0.1);
}

.icon::before,
.icon::after {
  content: "";
  display: block;
}

.icon-target::before {
  width: 22px;
  height: 22px;
  margin: 11px;
  border: 3px solid var(--brand);
  border-radius: 50%;
  box-shadow: inset 0 0 0 4px #fff;
}

.icon-service::before {
  width: 22px;
  height: 18px;
  margin: 12px 11px;
  border: 3px solid var(--brand);
  border-bottom-color: transparent;
  border-radius: 18px 18px 6px 6px;
}

.icon-dispatch::before {
  width: 22px;
  height: 22px;
  margin: 11px;
  background: linear-gradient(90deg, var(--brand) 0 6px, transparent 6px 16px, var(--success) 16px);
  border-radius: 6px;
}

.icon-track::before {
  width: 24px;
  height: 20px;
  margin: 12px 10px;
  background: linear-gradient(to top, var(--brand) 0 40%, transparent 40%),
    linear-gradient(to top, var(--success) 0 70%, transparent 70%),
    linear-gradient(to top, var(--brand-light) 0 55%, transparent 55%);
  background-size: 6px 100%;
  background-position: 0 0, 9px 0, 18px 0;
  background-repeat: no-repeat;
}

.process-section {
  width: 100%;
  max-width: none;
  padding-right: max(24px, calc((100vw - 1180px) / 2));
  padding-left: max(24px, calc((100vw - 1180px) / 2));
  background: #fff;
}

.process-list {
  justify-content: space-between;
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.process-list li {
  position: relative;
  flex: 1;
  min-width: 0;
  padding: 22px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 16px;
}

.process-list li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -15px;
  width: 16px;
  height: 2px;
  background: var(--brand-light);
}

.process-list span,
.store-content span {
  display: block;
  color: var(--brand);
  font-size: 13px;
  font-weight: 700;
}

.process-list strong {
  display: block;
  margin-top: 10px;
  color: var(--title);
  font-size: 18px;
}

.store-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.store-card {
  overflow: hidden;
}

.store-image {
  aspect-ratio: 16 / 10;
  background-color: #dbeafe;
  background-image: linear-gradient(135deg, rgba(37, 99, 235, 0.18), rgba(34, 197, 94, 0.16));
}

.store-image-b {
  background-image: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(37, 99, 235, 0.08));
}

.store-image-c {
  background-image: linear-gradient(135deg, rgba(34, 197, 94, 0.18), rgba(59, 130, 246, 0.16));
}

.store-content {
  padding: 22px;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(480px, 1.15fr);
  gap: 42px;
  align-items: start;
}

.contact-copy {
  padding-top: 12px;
}

.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 160px;
  gap: 24px;
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

dl {
  margin: 0;
}

dl div {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

dl div:first-child {
  padding-top: 0;
}

dl div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

dt {
  color: var(--muted);
}

dd {
  margin: 0;
  color: var(--title);
  font-weight: 700;
  overflow-wrap: anywhere;
}

.qr-box {
  display: grid;
  align-content: center;
  justify-items: center;
  min-height: 176px;
  padding: 14px;
  background: var(--bg);
  border: 1px dashed rgba(37, 99, 235, 0.35);
  border-radius: 12px;
}

.qr-box span {
  width: 96px;
  height: 96px;
  background:
    linear-gradient(90deg, var(--brand) 10px, transparent 10px) 0 0 / 24px 24px,
    linear-gradient(var(--brand) 10px, transparent 10px) 0 0 / 24px 24px,
    #fff;
  border: 8px solid #fff;
  border-radius: 8px;
}

.qr-box p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.site-footer {
  justify-content: center;
  gap: 16px;
  min-height: 88px;
  color: var(--muted);
  background: #fff;
  border-top: 1px solid var(--line);
}

@media (max-width: 992px) {
  .site-header {
    flex-wrap: wrap;
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .site-nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 12px;
    overflow-x: auto;
  }

  .hero,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 380px;
  }

  .advantage-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .process-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .process-list li::after {
    display: none;
  }
}

@media (max-width: 768px) {
  .section {
    width: min(100% - 32px, 1180px);
    padding: 64px 0;
  }

  .hero {
    min-height: auto;
    padding-top: 44px;
  }

  .hero-copy {
    font-size: 18px;
  }

  .about-grid,
  .store-grid,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .visual-fallback {
    grid-template-columns: 1fr;
  }

  .flow-node:not(:last-child)::after {
    right: auto;
    bottom: -18px;
    width: 2px;
    height: 24px;
  }

  .site-footer {
    flex-direction: column;
    gap: 4px;
  }
}

@media (max-width: 480px) {
  .site-header {
    padding-right: 16px;
    padding-left: 16px;
  }

  .nav-cta {
    display: none;
  }

  .hero-visual {
    min-height: 330px;
  }

  .advantage-grid,
  .process-list {
    grid-template-columns: 1fr;
  }

  .hero-metrics div {
    flex: 1 1 100px;
  }

  dl div {
    grid-template-columns: 1fr;
    gap: 2px;
  }
}