/* ============================================================
   朱颜文化 · 企业官网样式表
   设计调性：参考巨量引擎（Ocean Engine）科技蓝视觉体系
   ============================================================ */

/* ---------- CSS 变量 ---------- */
:root {
  /* 主色 - 巨量引擎蓝 */
  --color-primary: #0057B8;
  --color-primary-light: #0A84F4;
  --color-primary-dark: #003D80;

  /* 辅助色 */
  --color-accent: #FF6A00;
  --color-accent-light: #FF8C33;

  /* 中性色 */
  --color-bg: #FFFFFF;
  --color-bg-gray: #F5F7FA;
  --color-bg-dark: #0A1628;
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #4A4A4A;
  --color-text-muted: #8C8C8C;
  --color-text-on-dark: #FFFFFF;
  --color-border: #E8E8E8;

  /* 渐变 */
  --gradient-blue: linear-gradient(135deg, #0057B8 0%, #0A84F4 100%);
  --gradient-hero: linear-gradient(135deg, #003D80 0%, #0057B8 55%, #0A84F4 100%);

  /* 字号 */
  --font-size-hero: 48px;
  --font-size-h1: 36px;
  --font-size-h2: 28px;
  --font-size-h3: 20px;
  --font-size-body: 16px;
  --font-size-small: 14px;
  --font-size-caption: 12px;

  /* 字重 */
  --font-weight-bold: 700;
  --font-weight-medium: 500;
  --font-weight-regular: 400;

  /* 布局 */
  --max-width: 1200px;
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-sm: 6px;
  --shadow-card: 0 4px 20px rgba(0, 87, 184, 0.08);
  --shadow-card-hover: 0 12px 32px rgba(0, 87, 184, 0.16);
  --shadow-nav: 0 2px 16px rgba(0, 30, 70, 0.08);

  /* 过渡 */
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  line-height: 1.7;
  color: var(--color-text-primary);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

address {
  font-style: normal;
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}

/* ---------- 通用容器 ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

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

.section-dark {
  background: var(--gradient-hero);
  color: var(--color-text-on-dark);
}

/* 板块标题 */
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-head .eyebrow {
  display: inline-block;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  letter-spacing: 2px;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-head h2 {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
  line-height: 1.35;
  margin-bottom: 16px;
  color: var(--color-text-primary);
}

.section-head p {
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
}

.section-dark .section-head h2 {
  color: var(--color-text-on-dark);
}

.section-dark .section-head p {
  color: rgba(255, 255, 255, 0.78);
}

.section-dark .section-head .eyebrow {
  color: var(--color-accent-light);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  line-height: 1.4;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-blue);
  color: #fff;
  box-shadow: 0 6px 18px rgba(0, 87, 184, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(0, 87, 184, 0.36);
}

.btn-accent {
  background: var(--gradient-accent, linear-gradient(135deg, #FF6A00 0%, #FF8C33 100%));
  color: #fff;
  box-shadow: 0 6px 18px rgba(255, 106, 0, 0.30);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(255, 106, 0, 0.40);
}

.btn-outline {
  border: 1.5px solid #fff;
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(4px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.16);
  transform: translateY(-2px);
}

.btn-outline-blue {
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  background: #fff;
}

.btn-outline-blue:hover {
  background: rgba(0, 87, 184, 0.06);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 18px;
}

/* ---------- 导航栏 ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0;
  transition: all var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: #fff;
  box-shadow: var(--shadow-nav);
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.logo-img {
  height: 42px;
  width: auto;
  display: block;
}

/* 导航栏 Logo 双图切换：蓝底显示白色版，白底显示红色版 */
.logo-light {
  display: none;
}
.navbar:not(.scrolled) .logo-color {
  display: none;
}
.navbar:not(.scrolled) .logo-light {
  display: block;
}

.logo-mark {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border-radius: 10px;
  background: var(--gradient-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 87, 184, 0.3);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-text .cn {
  font-size: 18px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  transition: color var(--transition);
}

.logo-text .en {
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.navbar:not(.scrolled) .logo-text .cn {
  color: #fff;
}

.navbar:not(.scrolled) .logo-text .en {
  color: rgba(255, 255, 255, 0.7);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  position: relative;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.navbar:not(.scrolled) .nav-links a {
  color: rgba(255, 255, 255, 0.88);
}

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

.navbar:not(.scrolled) .nav-links a:hover,
.navbar:not(.scrolled) .nav-links a.active {
  color: #fff;
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-accent);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-tel {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.navbar:not(.scrolled) .nav-tel {
  color: rgba(255, 255, 255, 0.9);
}

.nav-tel svg {
  flex-shrink: 0;
}

.nav-cta {
  padding: 10px 22px;
  font-size: var(--font-size-small);
}

/* 汉堡菜单 */
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: var(--radius-sm);
}

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

.navbar:not(.scrolled) .nav-toggle span {
  background: #fff;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero 首屏 ---------- */
.hero {
  position: relative;
  padding: 168px 0 120px;
  background: var(--gradient-hero);
  color: #fff;
  overflow: hidden;
}

/* 几何装饰 */
.hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(10, 132, 244, 0.45) 0%, rgba(10, 132, 244, 0) 70%);
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -160px;
  left: -100px;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 106, 0, 0.18) 0%, rgba(255, 106, 0, 0) 70%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 70% 30%, #000 0%, transparent 75%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  margin-bottom: 28px;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulse 2s infinite;
}

.hero h1 {
  font-size: var(--font-size-hero);
  font-weight: var(--font-weight-bold);
  line-height: 1.22;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, #FF8C33 0%, #FF6A00 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  margin-top: 52px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.hero-stat .num {
  font-size: 32px;
  font-weight: var(--font-weight-bold);
  line-height: 1;
}

.hero-stat .num span {
  color: var(--color-accent-light);
}

.hero-stat .label {
  font-size: var(--font-size-small);
  color: rgba(255, 255, 255, 0.75);
  margin-top: 6px;
}

/* Hero 右侧可视化卡片 */
.hero-visual {
  position: relative;
  z-index: 2;
}

.dash-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(10px);
}

.dash-card .dash-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.dash-card .dash-title {
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.85);
}

.dash-card .dash-tag {
  font-size: var(--font-size-caption);
  padding: 3px 10px;
  border-radius: 100px;
  background: rgba(255, 106, 0, 0.2);
  color: var(--color-accent-light);
}

.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 14px;
  height: 120px;
  margin-bottom: 24px;
}

.bar-chart .bar {
  flex: 1;
  border-radius: 6px 6px 0 0;
  background: linear-gradient(180deg, #0A84F4 0%, rgba(10, 132, 244, 0.25) 100%);
  position: relative;
  transition: height 1s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: bottom;
  height: 0;
}

.bar-chart .bar.highlight {
  background: linear-gradient(180deg, #FF8C33 0%, rgba(255, 140, 51, 0.3) 100%);
}

.bar-chart .bar .bar-val {
  position: absolute;
  top: -26px;
  left: 50%;
  transform: translateX(-50%);
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-medium);
  color: #fff;
  opacity: 0;
  transition: opacity 0.4s 1s;
}

.dash-float {
  position: absolute;
  border-radius: var(--radius-md);
  padding: 14px 18px;
  background: #fff;
  color: var(--color-text-primary);
  box-shadow: 0 12px 32px rgba(0, 30, 70, 0.24);
  animation: float 5s ease-in-out infinite;
}

.dash-float .f-num {
  font-size: 22px;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.dash-float .f-label {
  font-size: var(--font-size-caption);
  color: var(--color-text-muted);
}

.dash-float.f1 {
  top: -18px;
  left: -28px;
}

.dash-float.f2 {
  bottom: 40px;
  right: -24px;
  animation-delay: 2.5s;
}

.dash-float.f2 .f-num {
  color: var(--color-accent);
}

/* ---------- 优势卡片 ---------- */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.adv-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.adv-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-blue);
  opacity: 0;
  transition: opacity var(--transition);
}

.adv-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.adv-card:hover::before {
  opacity: 1;
}

.adv-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(0, 87, 184, 0.08);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: all var(--transition);
}

.adv-card:hover .adv-icon {
  background: var(--gradient-blue);
  color: #fff;
}

.adv-card h3 {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  margin-bottom: 10px;
}

.adv-card p {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ---------- 业务卡片 ---------- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(0, 87, 184, 0.3);
}

.service-icon {
  width: 54px;
  height: 54px;
  border-radius: 12px;
  background: rgba(0, 87, 184, 0.07);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  margin-bottom: 10px;
}

.service-card p {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  line-height: 1.8;
  flex: 1;
}

.service-card .more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
}

.service-card .more svg {
  transition: transform var(--transition);
}

.service-card .more:hover svg {
  transform: translateX(4px);
}

/* ---------- 数据板块 ---------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-block .stat-num {
  font-size: 56px;
  font-weight: var(--font-weight-bold);
  line-height: 1;
  color: #fff;
  font-variant-numeric: tabular-nums;
}

.stat-block .stat-num .suffix {
  color: var(--color-accent-light);
}

.stat-block .stat-label {
  margin-top: 14px;
  font-size: var(--font-size-body);
  color: rgba(255, 255, 255, 0.8);
}

/* ---------- 行业标签 ---------- */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.industry-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px 16px;
  text-align: center;
  transition: all var(--transition);
  cursor: default;
}

.industry-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  border-color: rgba(0, 87, 184, 0.3);
}

.industry-item .ic {
  width: 46px;
  height: 46px;
  margin: 0 auto 12px;
  border-radius: 10px;
  background: var(--color-bg-gray);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.industry-item .name {
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

/* ---------- 信任背书 ---------- */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-bottom: 56px;
}

.trust-item {
  height: 72px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  transition: all var(--transition);
}

.trust-item:hover {
  box-shadow: var(--shadow-card);
  color: var(--color-primary);
}

.quote-card {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 48px 56px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}

.quote-card .quote-mark {
  font-size: 48px;
  line-height: 1;
  color: var(--color-primary-light);
  margin-bottom: 12px;
}

.quote-card blockquote {
  font-size: 20px;
  line-height: 1.7;
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
  margin-bottom: 24px;
}

.quote-card .quote-author {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

/* ---------- CTA 板块 ---------- */
.cta-band {
  background: var(--gradient-hero);
  border-radius: var(--radius-lg);
  padding: 64px 56px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -60px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(10, 132, 244, 0.5) 0%, transparent 70%);
}

.cta-band h2 {
  font-size: 32px;
  font-weight: var(--font-weight-bold);
  margin-bottom: 14px;
  position: relative;
}

.cta-band p {
  font-size: var(--font-size-body);
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
  position: relative;
}

.cta-band .cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  position: relative;
}

.cta-band .cta-tel {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: var(--font-weight-bold);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer .f-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

/* 深色页脚使用白色版 Logo */
.footer .logo-img {
  height: 44px;
}

.footer .f-logo .cn {
  font-size: 18px;
  font-weight: var(--font-weight-bold);
  color: #fff;
}

.footer .f-logo .en {
  font-size: 10px;
  letter-spacing: 1.5px;
  color: rgba(255, 255, 255, 0.5);
  text-transform: uppercase;
}

.footer .f-desc {
  font-size: var(--font-size-small);
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.55);
}

.footer h4 {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-bold);
  color: #fff;
  margin-bottom: 20px;
}

.footer ul li {
  margin-bottom: 12px;
}

.footer ul li a {
  font-size: var(--font-size-small);
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition);
}

.footer ul li a:hover {
  color: var(--color-accent-light);
}

.footer .f-contact li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: var(--font-size-small);
  line-height: 1.6;
  margin-bottom: 14px;
  color: rgba(255, 255, 255, 0.65);
}

.footer .f-contact svg {
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--color-accent-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: var(--font-size-caption);
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.55);
}

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

/* ---------- 子页面 Hero ---------- */
.page-hero {
  padding: 156px 0 72px;
  background: var(--gradient-hero);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -60px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(10, 132, 244, 0.45) 0%, transparent 70%);
}

.page-hero .crumb {
  font-size: var(--font-size-small);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 14px;
  position: relative;
}

.page-hero .crumb a:hover {
  color: var(--color-accent-light);
}

.page-hero h1 {
  font-size: 40px;
  font-weight: var(--font-weight-bold);
  line-height: 1.25;
  margin-bottom: 14px;
  position: relative;
}

.page-hero p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 680px;
  position: relative;
}

/* ---------- 关于我们：简介 ---------- */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.about-intro .text h2 {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
  margin-bottom: 24px;
  line-height: 1.4;
}

.about-intro .text p {
  color: var(--color-text-secondary);
  line-height: 1.9;
  margin-bottom: 16px;
}

.about-facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 28px;
}

.about-fact {
  background: var(--color-bg-gray);
  border-radius: var(--radius-md);
  padding: 18px 20px;
}

.about-fact .k {
  font-size: var(--font-size-caption);
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.about-fact .v {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.about-visual {
  position: relative;
}

.about-visual .img-placeholder {
  border-radius: var(--radius-lg);
  height: 420px;
  background: linear-gradient(135deg, #e8f1fb 0%, #d6e6f8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  position: relative;
  overflow: hidden;
}

.about-visual .img-placeholder svg {
  opacity: 0.6;
}

/* ---------- 时间轴 ---------- */
.timeline {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
}

.timeline-item {
  position: relative;
  padding-bottom: 40px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -40px;
  top: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #fff;
  border: 4px solid var(--color-primary);
  box-shadow: 0 0 0 4px rgba(0, 87, 184, 0.12);
}

.timeline-item .year {
  display: inline-block;
  font-size: 18px;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: 6px;
}

.timeline-item .content {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  box-shadow: var(--shadow-card);
}

.timeline-item .content h3 {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  margin-bottom: 6px;
}

.timeline-item .content p {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
}

/* ---------- 价值观 ---------- */
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.value-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}

.value-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.value-card .v-num {
  font-size: 40px;
  font-weight: var(--font-weight-bold);
  line-height: 1;
  color: rgba(0, 87, 184, 0.16);
  margin-bottom: 16px;
}

.value-card h3 {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  margin-bottom: 12px;
  color: var(--color-primary);
}

.value-card p {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  line-height: 1.9;
}

/* 使命愿景 */
.mv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 64px;
}

.mv-card {
  background: var(--gradient-hero);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  position: relative;
  overflow: hidden;
}

.mv-card::after {
  content: "";
  position: absolute;
  top: -60px;
  right: -40px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(10, 132, 244, 0.5) 0%, transparent 70%);
}

.mv-card .tag {
  display: inline-block;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  padding: 4px 14px;
  border-radius: 100px;
  background: rgba(255, 106, 0, 0.2);
  color: var(--color-accent-light);
  margin-bottom: 16px;
}

.mv-card h3 {
  font-size: 24px;
  font-weight: var(--font-weight-bold);
  margin-bottom: 12px;
}

.mv-card p {
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.9;
}

/* ---------- 团队 ---------- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.team-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition);
}

.team-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.team-item .t-num {
  font-size: 34px;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  line-height: 1;
}

.team-item .t-name {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  margin: 10px 0 6px;
}

.team-item .t-desc {
  font-size: var(--font-size-caption);
  color: var(--color-text-muted);
}

/* ---------- 分公司卡片 ---------- */
.branch-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.branch-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}

.branch-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.branch-card .b-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(0, 87, 184, 0.08);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.branch-card h3 {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  margin-bottom: 6px;
}

.branch-card .b-role {
  font-size: var(--font-size-small);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  margin-bottom: 12px;
}

.branch-card p {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
}

.branch-card .b-tag {
  display: inline-block;
  margin-top: 14px;
  font-size: var(--font-size-caption);
  padding: 3px 10px;
  border-radius: 100px;
  background: rgba(255, 106, 0, 0.1);
  color: var(--color-accent);
}

/* ---------- 服务详情 ---------- */
.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 64px 0;
}

.service-detail:nth-child(even) .sd-visual {
  order: 2;
}

.service-detail .sd-text h3 {
  font-size: 26px;
  font-weight: var(--font-weight-bold);
  margin-bottom: 16px;
}

.service-detail .sd-text h3 .idx {
  color: var(--color-accent);
  margin-right: 8px;
}

.service-detail .sd-text .desc {
  color: var(--color-text-secondary);
  line-height: 1.9;
  margin-bottom: 20px;
}

.sd-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin-bottom: 10px;
}

.sd-list li svg {
  flex-shrink: 0;
  margin-top: 4px;
  color: var(--color-primary);
}

.sd-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.sd-tags span {
  font-size: var(--font-size-caption);
  padding: 5px 14px;
  border-radius: 100px;
  background: rgba(0, 87, 184, 0.07);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
}

.sd-visual {
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #eef5fc 0%, #dcebfa 100%);
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  position: relative;
  overflow: hidden;
}

.sd-visual .big-icon {
  opacity: 0.5;
}

/* ---------- 服务流程 ---------- */
.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: flow;
}

.flow-step {
  position: relative;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 26px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}

.flow-step:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.flow-step .step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-blue);
  color: #fff;
  font-size: 18px;
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 6px 16px rgba(0, 87, 184, 0.3);
}

.flow-step h3 {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  margin-bottom: 10px;
}

.flow-step p {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.flow-step .arrow {
  position: absolute;
  top: 50%;
  right: -24px;
  transform: translateY(-50%);
  color: var(--color-primary-light);
  z-index: 2;
}

/* ---------- 案例卡片 ---------- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.case-card .case-cover {
  height: 180px;
  background: linear-gradient(135deg, #e8f1fb 0%, #d6e6f8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  position: relative;
}

.case-card .case-cover .industry-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(0, 87, 184, 0.9);
  color: #fff;
  font-size: var(--font-size-caption);
}

.case-card .case-body {
  padding: 26px;
}

.case-card .case-body h3 {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  margin-bottom: 10px;
}

.case-card .case-body p {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 18px;
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding-top: 18px;
  border-top: 1px solid var(--color-border);
}

.case-metrics .m-val {
  font-size: 20px;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  line-height: 1;
}

.case-metrics .m-val.accent {
  color: var(--color-accent);
}

.case-metrics .m-label {
  font-size: var(--font-size-caption);
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* ---------- 联系页 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.contact-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.contact-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.contact-card .c-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(0, 87, 184, 0.08);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.contact-card h3 {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-bold);
  margin-bottom: 8px;
}

.contact-card p,
.contact-card a {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  line-height: 1.7;
  word-break: break-all;
}

.contact-card a:hover {
  color: var(--color-primary);
}

/* 表单 */
.form-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}

.form-card h2 {
  font-size: 24px;
  font-weight: var(--font-weight-bold);
  margin-bottom: 8px;
}

.form-card .form-sub {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  margin-bottom: 28px;
}

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

.form-group label {
  display: block;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  margin-bottom: 8px;
  color: var(--color-text-primary);
}

.form-group label .req {
  color: var(--color-accent);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-body);
  transition: all var(--transition);
  background: #fff;
  color: var(--color-text-primary);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 87, 184, 0.12);
}

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

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

.form-hint {
  font-size: var(--font-size-caption);
  color: var(--color-text-muted);
  margin-top: 6px;
}

.form-error {
  font-size: var(--font-size-caption);
  color: #e02424;
  margin-top: 6px;
  display: none;
}

.form-group.invalid input,
.form-group.invalid textarea {
  border-color: #e02424;
}

.form-group.invalid .form-error {
  display: block;
}

.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}

.form-success .s-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(0, 184, 122, 0.12);
  color: #00b87a;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.form-success h3 {
  font-size: 22px;
  font-weight: var(--font-weight-bold);
  margin-bottom: 10px;
}

.form-success p {
  color: var(--color-text-secondary);
}

/* 地图占位 */
.map-placeholder {
  border-radius: var(--radius-lg);
  height: 380px;
  background: linear-gradient(135deg, #eef5fc 0%, #dcebfa 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  gap: 12px;
  border: 1px solid var(--color-border);
}

.map-placeholder .mp-label {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

/* ---------- 回到顶部 ---------- */
.back-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--gradient-blue);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0, 87, 184, 0.36);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition);
  z-index: 999;
}

.back-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-top:hover {
  transform: translateY(-3px);
}

/* ---------- 渐入动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-visual {
    max-width: 560px;
  }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
  .industry-grid { grid-template-columns: repeat(4, 1fr); }
  .trust-grid { grid-template-columns: repeat(3, 1fr); }
  .team-grid { grid-template-columns: repeat(3, 1fr); }
  .branch-grid { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-step .arrow { display: none; }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .about-intro { grid-template-columns: 1fr; }
  .service-detail { grid-template-columns: 1fr; gap: 28px; }
  .service-detail:nth-child(even) .sd-visual { order: 0; }
}

@media (max-width: 768px) {
  :root {
    --font-size-hero: 34px;
    --font-size-h1: 30px;
    --font-size-h2: 24px;
  }
  .section { padding: 64px 0; }
  .container { padding: 0 20px; }

  .nav-links,
  .nav-tel {
    display: none;
  }
  .nav-toggle { display: flex; }
  .navbar.menu-open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: var(--shadow-nav);
    padding: 16px 20px;
    gap: 4px;
  }
  .navbar.menu-open .nav-links a {
    color: var(--color-text-primary);
    padding: 12px 16px;
  }
  .navbar.menu-open .nav-links a.active {
    color: var(--color-primary);
  }

  .hero { padding: 128px 0 80px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .dash-float.f1 { left: 0; }
  .dash-float.f2 { right: 0; }

  .adv-grid { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: 1fr; }
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: 1fr; }
  .mv-grid { grid-template-columns: 1fr; }
  .flow-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .branch-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .page-hero { padding: 132px 0 56px; }
  .page-hero h1 { font-size: 32px; }
  .cta-band { padding: 48px 24px; }
  .cta-band h2 { font-size: 26px; }
  .stats-grid { gap: 32px; }
  .stat-block .stat-num { font-size: 40px; }
  .nav-cta { display: none; }
}