/* TrustedGEO brand overrides on Quantum template */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700&display=swap');

:root {
  --font-main: 'Noto Sans SC', 'Inter', system-ui, sans-serif;
  /* Readable body text on dark background (avoid near-black) */
  --text-body: rgba(255, 255, 255, 0.88);
  --text-secondary: rgba(255, 255, 255, 0.72);
  --text-muted-on-dark: rgba(210, 218, 235, 0.82);
  --nav-link: rgba(255, 255, 255, 0.85);
  --nav-link-active: #00d9ff;
}

/* Bootstrap 5 dark-theme compatibility */
[data-bs-theme="dark"],
body.dark-theme {
  --bs-body-color: var(--text-body);
  --bs-body-bg: #0a0a0f;
  --bs-secondary-color: var(--text-muted-on-dark);
  --bs-tertiary-color: var(--text-secondary);
  --bs-heading-color: #ffffff;
  --bs-link-color: #00d9ff;
  --bs-link-hover-color: #5ce7ff;
  color: var(--text-body);
}

.logo-text {
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #ffffff !important;
}

.logo-badge {
  background: var(--gradient-primary);
  color: #0a0a0f;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
  margin-left: 0.35rem;
  vertical-align: middle;
}

/* Logo image: scale by height only — never stretch aspect ratio */
.navbar-brand {
  display: inline-flex;
  align-items: center;
  padding-top: 0.35rem;
  padding-bottom: 0.35rem;
}

.navbar-brand-logo {
  display: block;
  height: 40px;
  width: auto;
  max-width: min(240px, 58vw);
  object-fit: contain;
  object-position: left center;
  /* 新版白字 Logo，原色显示，不拉伸变形 */
  filter: none;
}

.footer-logo-link {
  display: inline-block;
}

.footer-brand-logo {
  display: block;
  height: 44px;
  width: auto;
  max-width: 260px;
  object-fit: contain;
  object-position: left center;
  filter: none;
}

@media (max-width: 576px) {
  .navbar-brand-logo {
    height: 32px;
    max-width: 160px;
  }
}

/* ===== NAV: keep readable on dark bg (override Bootstrap light navbar) ===== */
.header .navbar,
.navbar.navbar-dark {
  --bs-navbar-color: var(--nav-link);
  --bs-navbar-hover-color: #ffffff;
  --bs-navbar-disabled-color: rgba(255, 255, 255, 0.4);
  --bs-navbar-active-color: var(--nav-link-active);
  --bs-navbar-brand-color: #ffffff;
  --bs-navbar-brand-hover-color: #ffffff;
  --bs-navbar-toggler-border-color: rgba(255, 255, 255, 0.25);
}

.header .nav-link,
.navbar .nav-link,
.navbar-nav .nav-link {
  color: var(--nav-link) !important;
}

.header .nav-link:hover,
.header .nav-link:focus,
.header .nav-link:active,
.header .nav-link.active,
.navbar .nav-link:hover,
.navbar .nav-link:focus,
.navbar .nav-link:active,
.navbar .nav-link.active,
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus,
.navbar-nav .nav-link:active,
.navbar-nav .nav-link.active,
.navbar-nav .nav-link:visited,
.header .nav-link:visited {
  color: var(--nav-link-active) !important;
}

.header .btn-link {
  color: var(--nav-link) !important;
  text-decoration: none;
}

.header .btn-link:hover,
.header .btn-link:focus,
.header .btn-link:active {
  color: #ffffff !important;
}

.navbar-toggler-icon {
  filter: invert(1);
}

/* ===== BODY / SECONDARY COPY contrast ===== */
.text-muted,
.small.text-muted,
p.text-muted,
.hero-visual-card .text-muted,
.principle-card .text-muted,
.step-card .text-muted,
.case-card .text-muted,
.contact-panel .text-muted,
.feature-description,
.section-subtitle,
.hero-description,
.footer-description,
.clients-section .text-muted,
.compare-table td,
.list-unstyled.text-muted,
ul.text-muted,
ol.text-muted {
  color: var(--text-muted-on-dark) !important;
}

.feature-title,
.step-card h3,
.case-card h3,
.principle-card h3,
.compare-table td:first-child {
  color: #ffffff !important;
}

.hero-title,
.section-title {
  color: #ffffff;
}

.hero-description strong {
  color: #ffffff;
}

.hero-title {
  font-size: clamp(2rem, 4vw, 3.25rem);
}

.hero-visual-card {
  background: var(--dark-card);
  border: 1px solid rgba(0, 217, 255, 0.25);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  color: var(--text-body);
}

.hero-visual-card h3 {
  color: #ffffff;
}

.hero-visual-card::before {
  content: '';
  position: absolute;
  inset: -40% auto auto -20%;
  width: 60%;
  height: 60%;
  background: radial-gradient(circle, rgba(0, 217, 255, 0.25), transparent 70%);
  pointer-events: none;
}

.metric-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.metric-tile {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 1rem;
}

.metric-tile .value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--primary);
  font-weight: 600;
}

.metric-tile .label {
  color: var(--text-muted-on-dark);
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--dark-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  color: var(--text-body);
}

.compare-table th,
.compare-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  text-align: left;
  vertical-align: top;
}

.compare-table th {
  background: rgba(0, 217, 255, 0.08);
  color: var(--primary);
  font-weight: 600;
}

.compare-table tr:last-child td {
  border-bottom: none;
}

.step-card {
  height: 100%;
  background: var(--dark-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: transform var(--transition-base), border-color var(--transition-base);
  color: var(--text-body);
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 217, 255, 0.35);
}

.step-num {
  font-family: var(--font-mono);
  color: var(--primary);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.case-card {
  background: var(--dark-card);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
  height: 100%;
  color: var(--text-body);
}

.case-card .delta {
  font-size: 1.75rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.principle-card {
  background: linear-gradient(160deg, rgba(0, 217, 255, 0.08), rgba(157, 78, 221, 0.08));
  border: 1px solid rgba(0, 217, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  height: 100%;
  color: var(--text-body);
}

.contact-panel {
  background: var(--dark-card);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid rgba(0, 217, 255, 0.2);
  color: var(--text-body);
}

.contact-panel .phone {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  font-family: var(--font-mono);
}

.section-kicker {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.75rem;
}

.footer .copyright,
.footer .copyright a,
.footer-links a,
.footer-heading {
  color: var(--text-muted-on-dark) !important;
}

.footer .logo-text {
  color: #ffffff !important;
}

.client-logo {
  color: var(--text-secondary) !important;
}

.stat-label {
  color: var(--text-muted-on-dark) !important;
}

/* SEO / GEO：品牌定义与 FAQ */
.brand-definition {
  max-width: 52rem;
  margin: 0 auto;
  padding: 1.5rem 1.75rem;
  border: 1px solid rgba(0, 217, 255, 0.18);
  border-radius: 12px;
  background: rgba(8, 16, 32, 0.55);
}

.brand-definition p {
  color: var(--text-body);
  margin-bottom: 0.75rem;
  line-height: 1.75;
}

.brand-definition p:last-child {
  margin-bottom: 0;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  padding: 1.25rem 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  background: rgba(8, 16, 32, 0.4);
}

.faq-item h2,
.faq-item .h5 {
  color: #ffffff;
  margin-bottom: 0.65rem;
}

.faq-item a {
  color: var(--primary);
}