@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;600;700&display=swap");

:root {
  --bg: #ffffff;
  --bg-soft: #f5f7fa;
  --card: #ffffff;
  --text: #1a2332;
  --muted: #5a6578;
  --primary: #0e4b75;
  --primary-light: #5dade2;
  --primary-hover: #0a3a5c;
  --accent: #22a06b;
  --border: #e2e8f0;
  --shadow: 0 4px 24px rgba(14, 75, 117, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Noto Sans SC", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

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

img {
  max-width: 100%;
  height: auto;
}

.container {
  width: min(1140px, 92%);
  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(--border);
}

.header-wrap {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  position: relative;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-logo {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.brand-text {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--primary);
}

.site-nav {
  display: flex;
  gap: 22px;
  align-items: center;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-switch {
  display: flex;
  gap: 4px;
}

.lang-btn {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  border-radius: 6px;
  padding: 5px 10px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

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

.menu-toggle {
  display: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  padding: 6px 10px;
  cursor: pointer;
  font-size: 0.85rem;
}

/* Typography */
.eyebrow {
  display: inline-block;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

h1, h2, h3, h4 {
  margin-top: 0;
  color: var(--primary);
  line-height: 1.3;
}

h1 {
  font-size: clamp(1.85rem, 3.5vw, 2.75rem);
}

h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  margin-bottom: 12px;
}

.lead {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 640px;
}

.section-intro {
  color: var(--muted);
  max-width: 680px;
  margin-bottom: 28px;
}

/* Buttons */
.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 12px 22px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.2s;
}

.btn:hover {
  background: var(--primary-hover);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

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

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* Hero */
.hero {
  padding: 80px 0 72px;
  background: linear-gradient(135deg, #f0f7fc 0%, #ffffff 50%, #f5f7fa 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(93, 173, 226, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
  position: relative;
}

.hero-visual {
  background: linear-gradient(145deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: 16px;
  padding: 32px;
  color: #fff;
  box-shadow: var(--shadow);
}

.hero-visual h3 {
  color: #fff;
  margin-bottom: 16px;
}

.hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 20px;
}

.stat-item {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  padding: 14px;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
}

.stat-label {
  font-size: 0.82rem;
  opacity: 0.85;
  margin-top: 4px;
}

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

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

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header .lead {
  margin: 0 auto;
}

/* Cards */
.cards {
  display: grid;
  gap: 20px;
}

.cards-2 { grid-template-columns: repeat(2, 1fr); }
.cards-3 { grid-template-columns: repeat(3, 1fr); }
.cards-4 { grid-template-columns: repeat(4, 1fr); }
.cards-6 { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(14, 75, 117, 0.12);
}

.card p {
  color: var(--muted);
  margin-bottom: 0;
}

.icon-card {
  display: grid;
  gap: 12px;
}

.icon-badge {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(14, 75, 117, 0.08);
  color: var(--primary);
  font-size: 1.3rem;
}

.card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

/* Check list */
.check-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--text);
}

.check-list li::before {
  content: "✓";
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(34, 160, 107, 0.12);
  color: var(--accent);
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.75rem;
}

/* Platforms */
.platform-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.platform-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--primary);
  box-shadow: var(--shadow);
}

/* Process timeline */
.process-steps {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  position: relative;
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step::after {
  content: "→";
  position: absolute;
  right: -12px;
  top: 18px;
  color: var(--primary-light);
  font-size: 1.2rem;
}

.process-step:last-child::after {
  display: none;
}

.step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.step-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--primary);
}

/* Testimonials */
.quote-card {
  border-left: 4px solid var(--accent);
}

.quote-text {
  font-style: italic;
  color: var(--text);
  font-size: 1.05rem;
  margin-bottom: 12px;
}

.quote-author {
  color: var(--muted);
  font-size: 0.88rem;
}

/* CTA banner */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, #1565a0 100%);
  color: #fff;
  border-radius: 16px;
  padding: 48px;
  text-align: center;
}

.cta-banner h2 {
  color: #fff;
  margin-bottom: 12px;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 24px;
}

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

.cta-banner .btn:hover {
  background: var(--bg-soft);
}

/* Service detail */
.service-block {
  margin-bottom: 40px;
}

.service-block h3 {
  margin-bottom: 12px;
}

.service-block ul {
  color: var(--muted);
  padding-left: 20px;
}

.service-block li {
  margin-bottom: 6px;
}

/* Case study */
.case-card {
  margin-bottom: 32px;
}

.case-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.case-tag {
  display: inline-block;
  background: rgba(14, 75, 117, 0.08);
  color: var(--primary);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
}

.case-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.metric {
  text-align: center;
  min-width: 100px;
}

.metric-value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
}

.metric-label {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 2px;
}

.case-phase {
  margin-bottom: 16px;
}

.case-phase h4 {
  font-size: 0.92rem;
  color: var(--primary);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.case-phase p {
  color: var(--muted);
  margin: 0;
}

/* About values */
.values-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.value-item {
  text-align: center;
  padding: 20px 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.value-item h4 {
  font-size: 0.92rem;
  margin-bottom: 0;
}

.mission-block {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}

.mission-card {
  padding: 24px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.mission-card h3 {
  font-size: 1rem;
  margin-bottom: 10px;
}

.mission-card p {
  color: var(--muted);
  margin: 0;
}

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

.form-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  box-shadow: var(--shadow);
}

form {
  display: grid;
  gap: 12px;
}

label {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text);
}

input,
textarea {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  padding: 10px 12px;
  font: inherit;
  transition: border-color 0.2s;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary-light);
}

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

.form-feedback {
  min-height: 24px;
  margin: 0;
  color: var(--accent);
  font-size: 0.9rem;
}

.contact-info {
  display: grid;
  gap: 16px;
}

.info-line {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--muted);
}

.info-line a {
  color: var(--primary);
}

.info-line a:hover {
  text-decoration: underline;
}

/* Company legal block - always visible */
.company-legal {
  margin-top: 8px;
  padding: 16px;
  background: var(--bg-soft);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.legal-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 8px;
}

.legal-name-zh {
  font-weight: 600;
  color: var(--text);
  margin: 0 0 4px;
}

.legal-name-en {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 12px;
}

.legal-address-zh,
.legal-region-zh {
  font-size: 0.88rem;
  color: var(--text);
  margin: 0 0 4px;
}

.legal-address-en,
.legal-region-en {
  display: none;
  font-size: 0.84rem;
  color: var(--muted);
  margin: 0 0 8px;
}

body.lang-en .legal-address-en,
body.lang-en .legal-region-en {
  display: block;
}

.legal-address-group {
  margin-bottom: 10px;
}

.legal-address-group:last-of-type {
  margin-bottom: 4px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  margin-top: 0;
}

.footer-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  padding: 40px 0 32px;
}

.footer-brand p {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 8px 0 0;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-nav a {
  color: var(--muted);
  font-size: 0.88rem;
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 16px 0 24px;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}

.footer-line {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.page-hero {
  padding: 56px 0 40px;
  background: var(--bg-soft);
}

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

/* Solutions grid */
.solution-card h3 {
  font-size: 1rem;
}

.solution-card .solution-icon {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

/* Icons inline */
.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: -0.15em;
}

.icon-sm { font-size: 18px; }

/* Responsive */
@media (max-width: 960px) {
  .hero-grid,
  .contact-grid,
  .footer-wrap {
    grid-template-columns: 1fr;
  }

  .cards-3,
  .cards-4,
  .cards-6,
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .process-step::after {
    display: none;
  }

  .mission-block {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .menu-toggle {
    display: inline-block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    padding: 16px 4%;
    background: #fff;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    gap: 12px;
    box-shadow: var(--shadow);
  }

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

  .cards-2,
  .cards-3,
  .cards-4,
  .cards-6,
  .values-grid {
    grid-template-columns: 1fr;
  }

  .process-steps {
    grid-template-columns: 1fr 1fr;
  }

  .hero {
    padding: 48px 0;
  }

  .cta-banner {
    padding: 32px 24px;
  }
}