/* ============================================
   行者无疆信息科技 - 全局样式
   Premium Design System v1.0
   ============================================ */

:root {
  /* 品牌主色 */
  --color-primary: #0B1F3A;        /* 深空蓝 - 主品牌色 */
  --color-primary-light: #1E3A5F;
  --color-primary-dark: #050E1F;

  /* 业务色 */
  --color-amap: #00B6F7;            /* 高德蓝 */
  --color-geo: #7C3AED;             /* GEO紫 */
  --color-baidu: #2932E1;           /* 百度蓝 */
  --color-accent: #D4A574;          /* 琥珀金 - 强调色 */

  /* 中性色 */
  --color-ink: #0A0A0B;
  --color-fog: #F8F9FB;
  --color-mist: #E5E7EB;
  --color-slate: #6B7280;
  --color-charcoal: #374151;

  /* 字体 */
  --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans CN",
               -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", sans-serif;
  --font-display: "PingFang SC", "Microsoft YaHei", "Source Han Serif CN", serif;

  /* 间距 */
  --space-section: 120px;
  --space-section-mobile: 64px;

  /* 过渡曲线 */
  --ease-premium: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-fog);
  color: var(--color-ink);
  line-height: 1.6;
  overflow-x: hidden;
  letter-spacing: 0.01em;
}

/* 排版 */
.font-display {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

/* ============== 通用容器 ============== */
.container-x {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

@media (max-width: 768px) {
  .container-x { padding: 0 20px; }
}

/* ============== 导航栏 ============== */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: all 0.4s var(--ease-premium);
  backdrop-filter: blur(0px);
}

.nav-bar.scrolled {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 1px 0 rgba(11, 31, 58, 0.06), 0 4px 24px rgba(11, 31, 58, 0.04);
}

.nav-bar.transparent {
  background: transparent;
}

.nav-link {
  position: relative;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-charcoal);
  padding: 8px 0;
  transition: color 0.3s var(--ease-smooth);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 1.5px;
  background: var(--color-primary);
  transition: all 0.4s var(--ease-premium);
  transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link:hover { color: var(--color-primary); }
.nav-link.active { color: var(--color-primary); }

/* 透明态下（首页未滚动）导航文字为白 */
.nav-bar.transparent .nav-link { color: rgba(255,255,255,0.92); }
.nav-bar.transparent .nav-link:hover,
.nav-bar.transparent .nav-link.active { color: #fff; }
.nav-bar.transparent .nav-link::after { background: #fff; }

/* ============== Logo ============== */
.logo-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}

.logo-mark.invert { color: #fff; }

.logo-svg {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

/* ============== 按钮 ============== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 999px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.4s var(--ease-premium);
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(11, 31, 58, 0.18);
}
.btn-primary:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(11, 31, 58, 0.25);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: rgba(11, 31, 58, 0.15);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-ghost-white {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border-color: rgba(255,255,255,0.25);
  backdrop-filter: blur(10px);
}
.btn-ghost-white:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.5);
  transform: translateY(-2px);
}

/* ============== 通用 Section ============== */
.section {
  padding: var(--space-section) 0;
  position: relative;
}
@media (max-width: 768px) {
  .section { padding: var(--space-section-mobile) 0; }
}

.section-dark {
  background: var(--color-primary);
  color: #fff;
}
.section-dark h1, .section-dark h2, .section-dark h3, .section-dark h4 { color: #fff; }

.section-soft {
  background: linear-gradient(180deg, var(--color-fog) 0%, #fff 100%);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 16px;
}
.eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--color-accent);
}
.section-dark .eyebrow { color: var(--color-accent); }

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: clamp(15px, 1.5vw, 17px);
  color: var(--color-slate);
  max-width: 640px;
  line-height: 1.7;
}
.section-dark .section-subtitle { color: rgba(255,255,255,0.7); }

/* ============== Hero ============== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: radial-gradient(ellipse at top, #102B4F 0%, var(--color-primary) 50%, var(--color-primary-dark) 100%);
  color: #fff;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 880px;
  padding-top: 80px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  font-size: 13px;
  color: rgba(255,255,255,0.9);
  margin-bottom: 28px;
}
.hero-eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.2); }
}

.hero-title {
  font-size: clamp(36px, 6.5vw, 72px);
  line-height: 1.05;
  font-weight: 600;
  color: #fff;
  margin-bottom: 28px;
}

.hero-title .grad {
  background: linear-gradient(135deg, #fff 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.7;
  color: rgba(255,255,255,0.75);
  max-width: 640px;
  margin-bottom: 44px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 80px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding-top: 36px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
@media (max-width: 768px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}

.hero-stat .num {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 600;
  color: #fff;
  font-family: var(--font-display);
  line-height: 1;
  margin-bottom: 6px;
}
.hero-stat .num .unit {
  font-size: 0.5em;
  color: var(--color-accent);
  margin-left: 2px;
}
.hero-stat .label {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.05em;
}

/* 滚动提示 */
.scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255,255,255,0.5);
  font-size: 12px;
  letter-spacing: 0.2em;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  animation: bounce 2.4s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}
.scroll-hint .line {
  width: 1px;
  height: 32px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
}

/* ============== 卡片 ============== */
.card {
  background: #fff;
  border-radius: 20px;
  padding: 40px 32px;
  transition: all 0.5s var(--ease-premium);
  border: 1px solid var(--color-mist);
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px -12px rgba(11, 31, 58, 0.12);
  border-color: rgba(212, 165, 116, 0.3);
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  position: relative;
}
.card-icon svg { width: 28px; height: 28px; }
.card-icon::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--color-accent) 0%, transparent 100%);
  opacity: 0;
  transition: opacity 0.5s var(--ease-premium);
}
.card:hover .card-icon::after { opacity: 0.5; }
.card-icon > * { position: relative; z-index: 1; }

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

.card p {
  color: var(--color-slate);
  font-size: 14.5px;
  line-height: 1.7;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
  transition: gap 0.3s var(--ease-smooth);
}
.card:hover .card-link { gap: 10px; }

/* ============== 业务大卡片（服务页） ============== */
.service-card {
  background: #fff;
  border-radius: 24px;
  padding: 56px 48px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-mist);
  transition: all 0.5s var(--ease-premium);
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--gradient, var(--color-primary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.6s var(--ease-premium);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 30px 60px -20px rgba(11, 31, 58, 0.18);
}

.service-num {
  position: absolute;
  top: 24px;
  right: 32px;
  font-size: 80px;
  font-weight: 700;
  color: rgba(11, 31, 58, 0.04);
  line-height: 1;
  font-family: var(--font-display);
}
@media (max-width: 768px) {
  .service-card { padding: 40px 28px; }
  .service-num { font-size: 60px; top: 16px; right: 20px; }
}

.service-card .badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 16px;
  background: rgba(0, 182, 247, 0.1);
  color: var(--color-amap);
}
.service-card.geo .badge { background: rgba(124, 58, 237, 0.1); color: var(--color-geo); }
.service-card.baidu .badge { background: rgba(41, 50, 225, 0.1); color: var(--color-baidu); }

/* ============== 数据展示 ============== */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--color-mist);
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--color-mist);
}
@media (max-width: 768px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}
.stat-cell {
  background: #fff;
  padding: 48px 32px;
  text-align: center;
  transition: background 0.3s var(--ease-smooth);
}
.stat-cell:hover { background: var(--color-fog); }
.stat-cell .num {
  font-size: 48px;
  font-weight: 600;
  color: var(--color-primary);
  font-family: var(--font-display);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-cell .label {
  font-size: 14px;
  color: var(--color-slate);
}

/* ============== 案例展示 ============== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 968px) { .case-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px)  { .case-grid { grid-template-columns: 1fr; } }

.case-card {
  background: #fff;
  border-radius: 16px;
  padding: 28px;
  border: 1px solid var(--color-mist);
  transition: all 0.4s var(--ease-premium);
  cursor: pointer;
}
.case-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  box-shadow: 0 16px 32px -12px rgba(11, 31, 58, 0.12);
}
.case-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 500;
  background: rgba(11, 31, 58, 0.05);
  color: var(--color-primary);
  margin-bottom: 16px;
}
.case-card h4 { font-size: 17px; margin-bottom: 8px; }
.case-card p { font-size: 13.5px; color: var(--color-slate); line-height: 1.6; }

/* ============== 表单 ============== */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-charcoal);
  margin-bottom: 8px;
}
.form-control {
  width: 100%;
  padding: 14px 16px;
  font-size: 14px;
  border: 1px solid var(--color-mist);
  border-radius: 12px;
  background: #fff;
  font-family: inherit;
  transition: all 0.3s var(--ease-smooth);
  color: var(--color-ink);
}
.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(11, 31, 58, 0.08);
}
textarea.form-control { resize: vertical; min-height: 120px; }

/* ============== 页脚 ============== */
.footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.7);
  padding: 80px 0 32px;
}
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 20px; }
.footer a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s var(--ease-smooth);
  display: block;
  padding: 4px 0;
}
.footer a:hover { color: var(--color-accent); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* ============== 滚动动效 ============== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-premium), transform 0.8s var(--ease-premium);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ============== 移动菜单 ============== */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  width: 40px;
  height: 40px;
  cursor: pointer;
  color: currentColor;
}
@media (max-width: 968px) {
  .mobile-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0; right: 0;
    background: #fff;
    padding: 24px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transform: translateY(-120%);
    transition: transform 0.4s var(--ease-premium);
    z-index: 99;
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-menu a { display: block; padding: 12px 0; border-bottom: 1px solid var(--color-mist); }
  .nav-menu a::after { display: none; }
  .desktop-only { display: none; }
}

/* ============== 装饰元素 ============== */
.deco-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(11,31,58,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11,31,58,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
  pointer-events: none;
}

.deco-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: 0.6;
}

/* ============== 子页面 Hero ============== */
.page-hero {
  padding: 180px 0 100px;
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.page-hero h1 {
  color: #fff;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.1;
  margin-bottom: 20px;
  max-width: 800px;
}
.page-hero p {
  color: rgba(255,255,255,0.7);
  font-size: 17px;
  max-width: 640px;
  line-height: 1.7;
}
.page-hero .breadcrumbs {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 24px;
}
.page-hero .breadcrumbs a { color: rgba(255,255,255,0.7); text-decoration: none; }
.page-hero .breadcrumbs a:hover { color: var(--color-accent); }

/* ============== 团队/价值观 ============== */
.value-item {
  padding: 32px 0;
  border-bottom: 1px solid var(--color-mist);
}
.value-item:last-child { border-bottom: none; }
.value-num {
  display: inline-block;
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 500;
  letter-spacing: 0.2em;
  margin-bottom: 12px;
}
.value-item h3 { font-size: 22px; margin-bottom: 12px; }
.value-item p { color: var(--color-slate); font-size: 15px; line-height: 1.7; }

/* ============== 时间线 ============== */
.timeline {
  position: relative;
  padding-left: 32px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 8px; top: 8px; bottom: 8px;
  width: 1px;
  background: var(--color-mist);
}
.timeline-item {
  position: relative;
  padding-bottom: 40px;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -28px; top: 8px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--color-primary);
}
.timeline-item .year {
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 500;
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}
.timeline-item h4 { font-size: 17px; margin-bottom: 6px; }
.timeline-item p { font-size: 14px; color: var(--color-slate); line-height: 1.6; }

/* ============== 联系卡片 ============== */
.contact-card {
  background: #fff;
  border-radius: 20px;
  padding: 32px;
  border: 1px solid var(--color-mist);
  transition: all 0.4s var(--ease-premium);
}
.contact-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
}
.contact-card .icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.contact-card .label {
  font-size: 13px;
  color: var(--color-slate);
  margin-bottom: 4px;
}
.contact-card .value {
  font-size: 17px;
  font-weight: 500;
  color: var(--color-primary);
  font-family: var(--font-display);
}

/* ============== 实用工具 ============== */
.text-grad {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.text-balance { text-wrap: balance; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}