/* 华熙未来 — Light corporate site */
:root {
  --primary: #0f766e;
  --primary-dark: #0d635c;
  --primary-light: #14b8a6;
  --primary-bg: #ecfdf5;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --shadow: 0 1px 3px rgba(15, 118, 110, 0.08);
  --shadow-md: 0 4px 16px rgba(15, 118, 110, 0.1);
  --radius: 12px;
  --max-width: 1140px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
}

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

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

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text);
}

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

.logo-mark {
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 8px;
}

.nav-list a {
  display: block;
  padding: 8px 16px;
  color: var(--text-muted);
  font-size: 0.9375rem;
  border-radius: 8px;
  transition: background 0.2s, color 0.2s;
}

.nav-list a:hover,
.nav-list a.active {
  color: var(--primary);
  background: var(--primary-bg);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  border-radius: 2px;
}

/* Hero — split 2-column */
.hero {
  padding: 80px 0 72px;
  background: linear-gradient(180deg, var(--primary-bg) 0%, var(--bg) 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 48px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  padding: 4px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.8125rem;
  color: var(--primary);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 2.5rem;
  line-height: 1.25;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero h1 span {
  color: var(--primary);
}

.hero-desc {
  font-size: 1.0625rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: var(--bg);
  color: var(--primary);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--primary);
  background: var(--primary-bg);
  color: var(--primary-dark);
}

.hero-stats {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-md);
}

.hero-stats-title {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 20px;
  font-weight: 600;
}

.stat-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.stat-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.stat-num {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Sections */
.section {
  padding: 72px 0;
}

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

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.0625rem;
}

/* Core business — 4-column grid */
.card-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.biz-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: box-shadow 0.2s, border-color 0.2s, transform 0.2s;
}

.biz-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
  transform: translateY(-2px);
}

.biz-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-bg);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 16px;
}

.biz-card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.biz-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Solutions — 3 icon cards centered */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 960px;
  margin: 0 auto;
}

.solution-card {
  text-align: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: box-shadow 0.2s;
}

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

.solution-card:hover {
  box-shadow: var(--shadow-md);
}

.solution-icon {
  width: 64px;
  height: 64px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 20px;
}

.solution-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.solution-card p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Why us — horizontal timeline */
.timeline {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 28px;
  left: 15%;
  right: 15%;
  height: 2px;
  background: var(--border);
  z-index: 0;
}

.timeline-step {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 1;
  padding: 0 16px;
}

.timeline-dot {
  width: 56px;
  height: 56px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 auto 20px;
  border: 4px solid var(--bg);
  box-shadow: var(--shadow);
}

.section-alt .timeline-dot {
  border-color: var(--bg-alt);
}

.timeline-step h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.timeline-step p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* CTA — light bordered card */
.cta-section {
  padding: 72px 0;
}

.cta-card {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  background: var(--bg);
  border: 2px solid var(--primary);
  border-radius: var(--radius);
  padding: 48px 40px;
  box-shadow: var(--shadow);
}

.cta-card h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.cta-card p {
  color: var(--text-muted);
  margin-bottom: 28px;
  font-size: 1.0625rem;
}

/* Page hero (inner pages) */
.page-hero {
  padding: 56px 0 48px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-hero p {
  color: var(--text-muted);
  font-size: 1.0625rem;
  max-width: 560px;
}

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

.about-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--primary);
}

.about-content p {
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.75;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.value-item {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.value-item h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--primary);
}

.value-item p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.milestone-list {
  list-style: none;
}

.milestone-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 20px;
}

.milestone-year {
  font-weight: 700;
  color: var(--primary);
  min-width: 56px;
}

.milestone-text {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* Services — numbered horizontal blocks */
.service-block {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}

.service-block:first-child {
  padding-top: 0;
}

.service-block:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.service-num {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--primary-bg);
  line-height: 1;
  -webkit-text-stroke: 1px var(--primary);
  color: transparent;
  user-select: none;
}

.service-content h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.service-content > p {
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.75;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.service-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary-bg);
  color: var(--primary);
  font-size: 0.8125rem;
  border-radius: 20px;
  font-weight: 500;
}

/* Contact page */
.contact-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 48px;
  align-items: start;
}

.contact-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.contact-card-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-bg);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  margin-bottom: 12px;
}

.contact-card h3 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.contact-card p,
.contact-card a {
  font-size: 1rem;
  color: var(--text);
  font-weight: 500;
}

.contact-form-wrap {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
}

.contact-form-wrap h2 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9375rem;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
  background: var(--bg);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* Footer — light */
.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-top: 12px;
  line-height: 1.65;
}

.footer-col h4 {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: var(--text-muted);
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--primary);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-muted);
  font-size: 0.8125rem;
}

.footer-bottom a:hover {
  color: var(--primary);
}

/* Responsive */
@media (max-width: 1024px) {
  .card-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .nav-list {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
  }

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

  .nav-toggle {
    display: block;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .card-grid-4,
  .solutions-grid {
    grid-template-columns: 1fr;
  }

  .timeline {
    flex-direction: column;
    gap: 32px;
  }

  .timeline::before {
    display: none;
  }

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

  .values-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .service-block {
    grid-template-columns: 56px 1fr;
    gap: 16px;
  }

  .service-num {
    font-size: 2.5rem;
  }
}