/* 广州告他智能科技有限公司 — 企业官网样式 */
:root {
  --color-primary: #1a5fb4;
  --color-primary-dark: #0d3d7a;
  --color-accent: #2ec4b6;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-bg: #ffffff;
  --color-bg-alt: #f1f5f9;
  --color-border: #e2e8f0;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 8px 30px rgba(15, 23, 42, 0.1);
  --radius: 12px;
  --container: 1120px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--color-primary-dark);
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(100% - 40px, var(--container));
  margin: 0 auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  font-weight: 600;
}

.logo:hover {
  color: var(--color-text);
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  font-size: 15px;
  font-weight: 700;
}

.logo-text {
  font-size: 15px;
  max-width: 200px;
  line-height: 1.3;
}

.site-nav {
  display: flex;
  gap: 8px;
}

.site-nav a {
  padding: 8px 16px;
  border-radius: 8px;
  color: var(--color-text-muted);
  font-size: 15px;
  font-weight: 500;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-primary);
  background: rgba(26, 95, 180, 0.08);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border: none;
  background: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.2s;
}

/* Hero */
.hero {
  position: relative;
  padding: 100px 0 90px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(26, 95, 180, 0.92) 0%, rgba(13, 61, 122, 0.95) 50%, rgba(15, 40, 80, 0.98) 100%),
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
  position: relative;
  color: #fff;
  max-width: 720px;
}

.hero-tag {
  display: inline-block;
  margin-bottom: 20px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.15);
  font-size: 14px;
  letter-spacing: 0.05em;
}

.hero h1 {
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 32px;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  border: 2px solid transparent;
  transition: all 0.2s;
  cursor: pointer;
}

.btn-primary {
  background: #fff;
  color: var(--color-primary-dark);
}

.btn-primary:hover {
  background: var(--color-accent);
  color: #fff;
}

.btn-outline {
  border-color: rgba(255, 255, 255, 0.6);
  color: #fff;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.btn-light {
  background: #fff;
  color: var(--color-primary);
}

.btn-light:hover {
  background: var(--color-bg-alt);
}

/* Stats */
.stats {
  padding: 0;
  margin-top: -40px;
  position: relative;
  z-index: 2;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  background: #fff;
  padding: 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.stat-item {
  text-align: center;
  padding: 12px;
}

.stat-item strong {
  display: block;
  font-size: 17px;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.stat-item span {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* Sections */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-head {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--color-text-muted);
  font-size: 16px;
}

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

.card {
  padding: 32px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: box-shadow 0.2s, transform 0.2s;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  border-radius: 10px;
  background: rgba(26, 95, 180, 0.1);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 700;
}

.card h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.card p {
  color: var(--color-text-muted);
  font-size: 15px;
}

/* About preview */
.about-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-preview-text h2 {
  font-size: 32px;
  margin-bottom: 20px;
}

.about-preview-text p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.link-more {
  display: inline-block;
  margin-top: 8px;
  font-weight: 600;
}

.visual-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.visual-block span {
  padding: 24px 16px;
  text-align: center;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  font-weight: 600;
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

/* Process */
.process-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  counter-reset: process;
}

.process-list li {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.process-num {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  font-size: 18px;
}

.process-list h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.process-list p {
  color: var(--color-text-muted);
  font-size: 14px;
}

/* CTA */
.cta {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  text-align: center;
}

.cta-inner h2 {
  font-size: 32px;
  margin-bottom: 12px;
}

.cta-inner p {
  margin-bottom: 28px;
  opacity: 0.9;
}

/* Page hero (inner pages) */
.page-hero {
  padding: 60px 0;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  text-align: center;
}

.page-hero h1 {
  font-size: 36px;
  margin-bottom: 12px;
}

.page-hero p {
  opacity: 0.9;
  font-size: 17px;
}

/* Content blocks */
.content-block h2 {
  font-size: 28px;
  margin-bottom: 20px;
}

.content-block p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.bullet-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 24px;
}

.bullet-list li {
  position: relative;
  padding-left: 20px;
  color: var(--color-text-muted);
}

.bullet-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

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

.value-item {
  padding: 28px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.value-item h3 {
  font-size: 18px;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.value-item p {
  color: var(--color-text-muted);
  font-size: 15px;
}

/* Service detail */
.service-detail {
  padding: 36px 0;
  border-bottom: 1px solid var(--color-border);
}

.service-detail:last-child {
  border-bottom: none;
}

.service-detail-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.service-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.1em;
}

.service-detail h2 {
  font-size: 24px;
}

.service-detail > p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
  max-width: 800px;
}

.tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-list li {
  padding: 6px 14px;
  background: var(--color-bg-alt);
  border-radius: 999px;
  font-size: 13px;
  color: var(--color-text-muted);
}

.industry-intro {
  margin-bottom: 20px;
}

.industry-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.industry-grid span {
  padding: 10px 20px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 14px;
  color: var(--color-text-muted);
}

/* Contact */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.contact-card {
  padding: 36px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.contact-card h2 {
  font-size: 22px;
  margin-bottom: 24px;
  color: var(--color-primary);
}

.contact-dl dt {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 16px;
  margin-bottom: 4px;
}

.contact-dl dt:first-child {
  margin-top: 0;
}

.contact-dl dd {
  font-size: 16px;
  font-weight: 500;
}

.contact-note p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
  font-size: 15px;
}

.contact-tip {
  padding: 14px;
  background: var(--color-bg-alt);
  border-radius: 8px;
  font-size: 14px !important;
}

/* Footer */
.site-footer {
  background: #0f172a;
  color: rgba(255, 255, 255, 0.75);
  padding-top: 56px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand strong {
  display: block;
  color: #fff;
  font-size: 17px;
  margin-bottom: 10px;
}

.footer-brand p {
  font-size: 14px;
  margin-bottom: 6px;
}

.footer-domain a {
  color: rgba(255, 255, 255, 0.85);
}

.footer-links h4,
.footer-contact h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 16px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

.footer-links a:hover {
  color: #fff;
}

.footer-contact p {
  font-size: 14px;
  margin-bottom: 8px;
}

.footer-contact a {
  color: rgba(255, 255, 255, 0.85);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
}

.footer-bottom p {
  margin-bottom: 4px;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.65);
}

.footer-bottom a:hover {
  color: #fff;
}

/* Responsive */
@media (max-width: 900px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .card-grid,
  .about-preview,
  .process-list,
  .value-grid,
  .contact-layout,
  .bullet-list {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 16px 20px 24px;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }

  .site-nav.open {
    display: flex;
  }

  .logo-text {
    display: none;
  }

  .hero {
    padding: 70px 0 60px;
  }

  .section {
    padding: 56px 0;
  }

  .stats {
    margin-top: -24px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    padding: 20px;
  }
}