/* ============================================
   金证顾问·智投中心官网 - 全局样式
   高级极简编辑风（Swiss Editorial Style）
   ============================================ */

:root {
  --bg: #fafaf9;
  --bg-warm: #f5f5f0;
  --bg-card: #ffffff;
  --text: #1a1a1a;
  --text-secondary: #666666;
  --text-muted: #999999;
  --gold: #B8964A;
  --gold-dark: #9a7b3d;
  --gold-light: #d4b76a;
  --border: #e5e5e0;
  --border-light: #f0f0ec;
  --radius: 0px;
  --transition: 0.25s ease;
  --max-width: 1100px;
  --header-height: 64px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  font-size: 15px;
}

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

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

/* ============================================
   导航栏
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(250, 250, 249, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.logo img {
  height: 32px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.3px;
  position: relative;
  padding: 4px 0;
  transition: color var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--gold);
  transition: width var(--transition);
}

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

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  transition: all var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(4.5px, 4.5px);
}
.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(4.5px, -4.5px);
}

/* ============================================
   页脚
   ============================================ */
.footer {
  background: var(--text);
  color: rgba(255,255,255,0.6);
  padding: 80px 0 32px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-brand {
  font-size: 20px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,0.5);
  max-width: 320px;
}

.footer-title {
  font-size: 12px;
  font-weight: 600;
  color: rgba(255,255,255,0.8);
  margin-bottom: 20px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--gold-light);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-label {
  font-size: 11px;
  font-weight: 600;
  color: rgba(255,255,255,0.45);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.footer-contact .phone {
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.3px;
  margin: 0;
}

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

.footer-contact a:hover {
  color: var(--gold-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 12px;
  color: rgba(255,255,255,0.35);
}

/* ============================================
   通用组件
   ============================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

.section {
  padding: 100px 0;
}

.section-header {
  margin-bottom: 64px;
}

.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}

.section-title {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.5px;
}

.section-title-large {
  font-size: 40px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -1px;
}

.section-desc {
  font-size: 15px;
  color: var(--text-secondary);
  margin-top: 16px;
  max-width: 520px;
}

/* 卡片 - 极简边框 */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 40px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.card:hover {
  border-color: var(--gold);
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 14px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.3px;
}

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

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

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--text);
}

/* 分隔 */
.divider {
  height: 1px;
  background: var(--border);
}

.divider-gold {
  height: 1px;
  background: var(--gold);
  width: 40px;
}

/* ============================================
   滚动动画
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.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; }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 56px;
  }

  .header-inner,
  .container,
  .footer-inner {
    padding: 0 20px;
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 16px 20px;
    gap: 0;
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-link {
    padding: 14px 0;
    font-size: 15px;
    border-bottom: 1px solid var(--border-light);
    width: 100%;
  }

  .nav-link:last-child {
    border-bottom: none;
  }

  .menu-toggle {
    display: flex;
  }

  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 26px;
  }

  .section-title-large {
    font-size: 32px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}