@charset "utf-8";

/* ============================================================
   梵瑞网络科技 - 现代官网样式
   设计方向：浅白科技蓝 + 青色点缀
   ============================================================ */

:root {
  /* 主色调 - 浅白明亮 */
  --color-bg: #ffffff;
  --color-bg-soft: #f5f8fc;
  --color-surface: #ffffff;
  --color-surface-hover: #f1f5f9;
  --color-border: #e6ecf4;
  --color-border-strong: #cbd5e1;

  /* 文字 - 深灰蓝 */
  --color-text: #1e293b;
  --color-text-soft: #64748b;
  --color-text-muted: #94a3b8;

  /* 品牌色 - 科技蓝 */
  --color-brand: #3b82f6;
  --color-brand-soft: rgba(59, 130, 246, 0.1);
  --color-accent: #06b6d4;
  --color-accent-soft: rgba(6, 182, 212, 0.1);

  /* 功能色 */
  --color-success: #22c55e;

  /* 尺寸 */
  --container: 1200px;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 10px 40px -12px rgba(30, 41, 59, 0.12);
  --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.25);

  /* 字体 */
  --font-display: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;

  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 重置 ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-display);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

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

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* ============================================================
   导航栏
   ============================================================ */
.nav-wrap {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition);
  padding: 20px 0;
}
.nav-wrap.scrolled {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
  box-shadow: 0 2px 12px rgba(30, 41, 59, 0.06);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 1px;
}
.logo img { height: 36px; width: auto; }
.logo-svg { height: 38px; width: 38px; flex-shrink: 0; }
.logo-text { color: var(--color-text); }
.logo-text span { color: var(--color-brand); }

.nav-links { display: flex; gap: 8px; align-items: center; }
.nav-links a {
  padding: 8px 18px;
  font-size: 14px;
  color: var(--color-text-soft);
  border-radius: 8px;
  transition: var(--transition);
  position: relative;
}
.nav-links a:hover { color: var(--color-brand); background: var(--color-brand-soft); }
.nav-links a.active { color: var(--color-text); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--color-brand);
  border-radius: 2px;
}
.nav-cta {
  background: var(--color-brand);
  color: #fff !important;
  padding: 10px 22px !important;
  font-weight: 600;
}
.nav-cta:hover { background: #2563eb !important; transform: translateY(-1px); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

/* ============================================================
   Hero 区域
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 20% 30%, rgba(59, 130, 246, 0.12), transparent 60%),
    radial-gradient(ellipse 70% 50% at 80% 70%, rgba(6, 182, 212, 0.1), transparent 60%),
    var(--color-bg);
}
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--container);
  margin: 0 auto;
  padding: 120px 24px 80px;
  width: 100%;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: var(--color-brand-soft);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: 100px;
  font-size: 13px;
  color: var(--color-brand);
  margin-bottom: 28px;
  animation: fadeUp 0.8s ease both;
}
.hero-eyebrow::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-brand);
  box-shadow: 0 0 12px var(--color-brand);
  animation: pulse 2s ease-in-out infinite;
}
.hero h1 {
  font-size: clamp(36px, 6vw, 68px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 24px;
  animation: fadeUp 0.8s ease 0.1s both;
}
.hero h1 .highlight {
  background: linear-gradient(120deg, var(--color-brand), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--color-text-soft);
  max-width: 640px;
  margin-bottom: 40px;
  animation: fadeUp 0.8s ease 0.2s both;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeUp 0.8s ease 0.3s both;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 12px;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-brand);
  color: #fff;
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3);
}
.btn-primary:hover { background: #2563eb; transform: translateY(-3px); box-shadow: 0 12px 32px rgba(59, 130, 246, 0.4); }
.btn-outline {
  background: #ffffff;
  border: 1px solid var(--color-border-strong);
  color: var(--color-text);
}
.btn-outline:hover { background: var(--color-surface-hover); border-color: var(--color-brand); transform: translateY(-3px); }
.btn .arrow { transition: var(--transition); }
.btn:hover .arrow { transform: translateX(4px); }

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 80px;
  flex-wrap: wrap;
  animation: fadeUp 0.8s ease 0.4s both;
}
.stat-item .stat-num {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  background: linear-gradient(120deg, var(--color-brand), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-item .stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* 滚动提示 */
.scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 12px;
  z-index: 2;
  animation: fadeUp 1s ease 0.6s both;
}
.scroll-hint .mouse-wheel {
  width: 22px;
  height: 36px;
  border: 2px solid var(--color-text-muted);
  border-radius: 12px;
  position: relative;
}
.scroll-hint .mouse-wheel::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 8px;
  background: var(--color-text-muted);
  border-radius: 2px;
  animation: scrollWheel 1.8s ease-in-out infinite;
}

/* ============================================================
   通用段落标题
   ============================================================ */
.section {
  padding: 100px 0;
  position: relative;
}
.section-head {
  text-align: center;
  margin-bottom: 64px;
}
.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-brand);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.section-desc {
  font-size: 16px;
  color: var(--color-text-soft);
  max-width: 620px;
  margin: 0 auto;
}

/* ============================================================
   服务区域
   ============================================================ */
.services { background: var(--color-bg-soft); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-brand), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-border-strong);
  background: var(--color-surface-hover);
  box-shadow: var(--shadow);
}
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--color-brand-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 26px;
  transition: var(--transition);
}
.service-card:hover .service-icon {
  background: var(--color-brand);
  transform: scale(1.08);
}
.service-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}
.service-card p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
}

/* ============================================================
   能力 / 为什么选择我们
   ============================================================ */
.capabilities { background: var(--color-bg); }
.cap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.cap-item {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.cap-item:hover {
  border-color: rgba(0, 212, 255, 0.3);
  background: var(--color-surface-hover);
}
.cap-num {
  flex-shrink: 0;
  font-size: 28px;
  font-weight: 800;
  color: var(--color-brand);
  font-family: var(--font-mono);
  opacity: 0.6;
}
.cap-item h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}
.cap-item p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
}

/* ============================================================
   案例展示
   ============================================================ */
.cases { background: var(--color-bg-soft); }
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.case-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}
.case-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
  border-color: var(--color-border-strong);
}
.case-img {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--color-bg);
}
.case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.case-card:hover .case-img img { transform: scale(1.08); }
.case-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,14,26,0.6), transparent 50%);
  opacity: 0;
  transition: var(--transition);
}
.case-card:hover .case-img::after { opacity: 1; }
.case-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 5px 12px;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(8px);
  border-radius: 100px;
  font-size: 12px;
  color: var(--color-accent);
  z-index: 2;
}
.case-body { padding: 24px; }
.case-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}
.case-body p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.6;
}

/* ============================================================
   软著证书
   ============================================================ */
.certificates { background: var(--color-bg); }
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}
.cert-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.cert-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.cert-img {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: #f4f4f4;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cert-img img { width: 100%; height: 100%; object-fit: cover; }
.cert-body { padding: 24px; }
.cert-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}
.cert-body p {
  font-size: 13px;
  color: var(--color-text-muted);
}
.cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--color-success);
  margin-bottom: 10px;
}
.cert-badge::before {
  content: '✓';
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(34, 197, 94, 0.15);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
}

/* ============================================================
   开发流程
   ============================================================ */
.process { background: var(--color-bg-soft); }
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0;
  position: relative;
}
.process-step {
  position: relative;
  padding: 32px 24px;
  text-align: center;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition: var(--transition);
}
.process-step:hover {
  background: var(--color-surface-hover);
  z-index: 1;
}
.process-step:not(:last-child) { border-right: none; }
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-brand-soft);
  color: var(--color-brand);
  font-size: 18px;
  font-weight: 800;
  font-family: var(--font-mono);
  margin-bottom: 16px;
}
.process-step h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.process-step p {
  font-size: 13px;
  color: var(--color-text-soft);
  line-height: 1.6;
}

/* ============================================================
   CTA 区域
   ============================================================ */
.cta-section {
  padding: 80px 0;
  background: var(--color-bg);
}
.cta-box {
  position: relative;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(6, 182, 212, 0.06));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 64px 48px;
  text-align: center;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.12), transparent 70%);
  pointer-events: none;
}
.cta-box h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  margin-bottom: 16px;
  position: relative;
}
.cta-box p {
  font-size: 17px;
  color: var(--color-text-soft);
  margin-bottom: 32px;
  position: relative;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

/* ============================================================
   页脚
   ============================================================ */
.footer {
  background: #f8fafc;
  border-top: 1px solid var(--color-border);
  padding: 60px 0 30px;
}
.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .logo { margin-bottom: 20px; }
.footer-brand p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.8;
  max-width: 360px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--color-text);
}
.footer-col ul li {
  margin-bottom: 12px;
}
.footer-col a {
  font-size: 14px;
  color: var(--color-text-soft);
  transition: var(--transition);
}
.footer-col a:hover { color: var(--color-brand); }
.footer-contact li {
  font-size: 14px;
  color: var(--color-text-soft);
  margin-bottom: 12px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.footer-contact .ico {
  color: var(--color-brand);
  flex-shrink: 0;
}
.footer-bottom {
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--color-text-muted);
}
.footer-bottom a:hover { color: var(--color-brand); }

/* ============================================================
   子页面通用
   ============================================================ */
.page-hero {
  padding: 160px 0 80px;
  background:
    radial-gradient(ellipse 60% 80% at 10% 0%, rgba(59, 130, 246, 0.1), transparent 60%),
    var(--color-bg);
  text-align: center;
  position: relative;
}
.page-hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  margin-bottom: 16px;
}
.page-hero p {
  font-size: 17px;
  color: var(--color-text-soft);
  max-width: 600px;
  margin: 0 auto;
}
.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}
.breadcrumb a:hover { color: var(--color-brand); }
.breadcrumb .sep { opacity: 0.5; }

/* 关于页面 */
.about-content { padding: 80px 0; background: var(--color-bg-soft); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-text h2 {
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 800;
  margin-bottom: 24px;
  line-height: 1.2;
}
.about-text p {
  font-size: 15px;
  color: var(--color-text-soft);
  line-height: 1.9;
  margin-bottom: 18px;
}
.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}
.about-tag {
  padding: 8px 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 13px;
  color: var(--color-text-soft);
}
.about-visual {
  position: relative;
}
.about-visual img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.about-visual::before {
  content: '';
  position: absolute;
  top: -20px;
  left: -20px;
  right: 40px;
  bottom: 40px;
  border: 2px solid var(--color-brand);
  border-radius: var(--radius);
  z-index: -1;
  opacity: 0.3;
}

/* 服务领域 */
.domain-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 40px;
}
.domain-item {
  display: flex;
  gap: 14px;
  padding: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.domain-item:hover { border-color: var(--color-brand); background: var(--color-surface-hover); }
.domain-item .num {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-brand);
  font-family: var(--font-mono);
  flex-shrink: 0;
}
.domain-item h4 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.domain-item p { font-size: 13px; color: var(--color-text-muted); }

/* 联系页面 */
.contact-section { padding: 80px 0; background: var(--color-bg-soft); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-info-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px;
}
.contact-info-card h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 24px;
}
.contact-item {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}
.contact-item:last-child { border-bottom: none; }
.contact-item .ico {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--color-brand-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.contact-item .label {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}
.contact-item .value {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}
.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px;
}
.contact-form h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 8px;
}
.contact-form .sub {
  color: var(--color-text-muted);
  margin-bottom: 28px;
  font-size: 14px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text-soft);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 15px;
  font-family: inherit;
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-brand);
  background: var(--color-bg-soft);
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* ============================================================
   动画
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}
@keyframes scrollWheel {
  0% { opacity: 1; transform: translate(-50%, 0); }
  100% { opacity: 0; transform: translate(-50%, 12px); }
}

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 960px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(16px);
    padding: 20px;
    gap: 4px;
    border-bottom: 1px solid var(--color-border);
  }
  .hero-stats { gap: 32px; }
  .cap-grid { grid-template-columns: 1fr; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .process-step:not(:last-child) { border-right: 1px solid var(--color-border); border-bottom: none; }
  .cta-box { padding: 40px 24px; }
}
@media (max-width: 600px) {
  .section { padding: 64px 0; }
  .hero-content { padding: 100px 20px 60px; }
  .hero-stats { gap: 24px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
  .nav-inner { padding: 0 16px; }
  .service-card, .cap-item, .case-body, .cert-body { padding: 24px 20px; }
  .contact-info-card, .contact-form { padding: 28px 20px; }
}