:root {
  --primary: #d9534f;
  --primary-light: #f2dede;
  --primary-dark: #c9302c;
  --bg-light: #fff5f5;
  --text: #333;
  --white: #fff;
  --border: #f0c0c0;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg-light);
  line-height: 1.6;
}
a { color: var(--primary); text-decoration: none; }
img { max-width: 100%; height: auto; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 16px; }

/* ============ header ============ */
.site-header { background: var(--white); border-bottom: 2px solid var(--primary-light); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; }
.logo { display: flex; align-items: center; gap: 8px; font-weight: bold; font-size: 20px; color: var(--primary); }
.logo-mark { background: var(--primary); color: #fff; width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; border-radius: 6px; font-size: 22px; }
.main-nav ul { display: flex; list-style: none; gap: 24px; align-items: center; }
.main-nav a { color: var(--text); font-weight: 500; padding: 6px 0; display: block; }
.main-nav .active > a { color: var(--primary); border-bottom: 2px solid var(--primary); }
.has-sub { position: relative; }
.arrow { font-size: 10px; margin-left: 2px; display: inline-block; transition: transform .2s; }
.has-sub:hover .arrow { transform: rotate(180deg); }

.main-nav .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 4px;
  min-width: 140px;
  display: none;
  flex-direction: column;
  gap: 0;
  padding: 8px 0;
  box-shadow: 0 4px 12px rgba(0,0,0,.08);
  z-index: 999;
}
.main-nav .has-sub:hover .sub-menu { display: flex; }
.main-nav .sub-menu li a { padding: 8px 16px; white-space: nowrap; display: block; }
.main-nav .sub-menu li a:hover { background: var(--primary-light); color: var(--primary-dark); }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 22px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  height: 3px;
  width: 100%;
  background: var(--primary);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(9.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-9.5px) rotate(-45deg); }

.header-actions { display: flex; gap: 8px; }
.header-qq { text-align: right; padding-bottom: 6px; font-size: 14px; color: var(--primary); }
.btn { display: inline-block; padding: 8px 16px; border-radius: 4px; font-size: 14px; font-weight: 500; text-align: center; cursor: pointer; border: 1px solid transparent; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: #fff; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); }

/* ============ main ============ */
.site-main { min-height: 60vh; padding: 24px 0; }

/* ============ footer ============ */
.site-footer { background: var(--white); border-top: 2px solid var(--primary-light); margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 32px 16px; }
.footer-col h4 { color: var(--primary); margin-bottom: 12px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 6px; }
.footer-bottom { background: var(--primary-light); text-align: center; padding: 12px; font-size: 14px; }

/* mobile fixed bar */
.mobile-fixed-bar { display: none; position: fixed; bottom: 0; left: 0; right: 0; background: #fff; border-top: 1px solid var(--border); padding: 8px; gap: 8px; z-index: 200; }
.mobile-fixed-bar .btn { flex: 1; }

/* ============ 通用组件 ============ */
.card { background: #fff; border-radius: 8px; padding: 24px; box-shadow: 0 2px 8px rgba(0,0,0,.04); margin-bottom: 24px; }
.card h2 { color: var(--primary-dark); margin-bottom: 16px; font-size: 22px; border-left: 4px solid var(--primary); padding-left: 10px; }
.card h3 { color: var(--primary-dark); margin: 16px 0 8px; font-size: 18px; }
.card p { margin-bottom: 10px; }
.card ul { padding-left: 20px; }
.card ul li { margin-bottom: 6px; }

.hero { background: linear-gradient(135deg, #fff5f5, #f2dede); padding: 60px 0; text-align: center; border-radius: 8px; margin-bottom: 32px; }
.hero h1 { font-size: 36px; color: var(--primary-dark); margin-bottom: 16px; }
.hero p { font-size: 18px; color: #555; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.feature { text-align: center; padding: 20px; background: #fff; border-radius: 8px; }
.feature .icon { font-size: 36px; margin-bottom: 12px; }
.feature h3, .feature h4 { color: var(--primary-dark); margin-bottom: 6px; }

/* 奖项 */
.award-item { text-align: center; padding: 20px; background: #fff; border-radius: 8px; border: 1px solid var(--border); transition: transform .2s; }
.award-item:hover { transform: translateY(-4px); }
.award-item .award-icon { font-size: 40px; }
.award-item h4 { color: var(--primary-dark); margin: 10px 0 6px; }
.award-item p { font-size: 13px; color: #888; }

/* 办公室 */
.office-item { padding: 16px; background: #fff; border-radius: 8px; border-left: 4px solid var(--primary); }
.office-item h4 { color: var(--primary-dark); margin-bottom: 4px; }
.office-item p { font-size: 14px; color: #555; }

/* 表格 */
.table-wrap { overflow-x: auto; }
table.compare { width: 100%; border-collapse: collapse; background: #fff; min-width: 600px; }
table.compare th, table.compare td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; }
table.compare th { background: var(--primary-light); color: var(--primary-dark); }
table.compare tr:nth-child(even) td { background: #fffafa; }

/* 时间线 */
.timeline { position: relative; padding-left: 24px; border-left: 2px solid var(--primary); margin-top: 12px; }
.timeline-item { position: relative; margin-bottom: 20px; }
.timeline-item::before { content: ''; position: absolute; left: -31px; top: 6px; width: 12px; height: 12px; background: var(--primary); border-radius: 50%; border: 2px solid #fff; }
.timeline-item h4 { color: var(--primary-dark); margin-bottom: 4px; }
.timeline-item p { color: #555; font-size: 14px; }

/* 开户流程 */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 16px; }
.step { background: #fff; border: 1px solid var(--border); border-radius: 8px; padding: 20px; text-align: center; position: relative; }
.step .num { display: inline-block; width: 36px; height: 36px; line-height: 36px; border-radius: 50%; background: var(--primary); color: #fff; font-weight: bold; margin-bottom: 10px; }
.step h4 { color: var(--primary-dark); margin-bottom: 6px; }
.step p { font-size: 13px; color: #666; }

/* FAQ */
.faq-item { border-bottom: 1px solid var(--border); padding: 14px 0; }
.faq-item:last-child { border-bottom: none; }
.faq-item h4 { cursor: pointer; color: var(--primary-dark); position: relative; padding-right: 24px; font-size: 16px; }
.faq-item h4::after { content: '+'; position: absolute; right: 0; top: 0; font-weight: bold; color: var(--primary); font-size: 18px; }
.faq-item.open h4::after { content: '−'; }
.faq-item .faq-answer { display: none; padding-top: 8px; color: #555; }
.faq-item.open .faq-answer { display: block; }

/* 文章列表 */
.article-list { list-style: none; }
.article-list li { border-bottom: 1px solid var(--border); padding: 16px 0; display: flex; gap: 16px; }
.article-list img { width: 120px; height: 80px; object-fit: cover; border-radius: 4px; }
.article-list h3 { margin-bottom: 4px; }

/* 404 */
.error-page { text-align: center; padding: 80px 16px; }
.error-code { font-size: 120px; font-weight: bold; color: var(--primary-light); line-height: 1; }
.error-title { font-size: 28px; margin: 16px 0; }
.error-links { margin-top: 24px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ============ 响应式 ============ */
@media (max-width: 900px) {
  .header-inner { flex-wrap: wrap; }
  .nav-toggle { display: flex; }

  .main-nav {
    display: none;
    width: 100%;
    order: 3;
    background: #fff;
    border-top: 1px solid var(--border);
    margin-top: 8px;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0; align-items: stretch; }
  .main-nav li { border-bottom: 1px solid var(--border); }
  .main-nav a { padding: 12px 4px; }
  .main-nav .active > a { border-bottom: none; color: var(--primary); }
  .main-nav .sub-menu {
    position: static;
    display: none;
    border: none;
    box-shadow: none;
    padding: 0 0 0 20px;
    background: #fffafa;
    min-width: 0;
  }
  .main-nav .has-sub.open .sub-menu { display: block; }
  .main-nav .has-sub:hover .sub-menu { display: none; }
  .main-nav .has-sub.open:hover .sub-menu { display: block; }

  .header-actions { display: none; }
  .header-qq { text-align: center; padding: 6px 0; }
  .mobile-fixed-bar { display: flex; }
  .site-footer { margin-bottom: 60px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .hero { padding: 40px 0; }
  .hero h1 { font-size: 26px; }
  .hero p { font-size: 16px; }
}
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .logo-text { font-size: 16px; }
}
/* ============ 后台导航 ============ */
.admin-nav { background: #fff; border-bottom: 2px solid var(--primary-light); padding: 12px 0; }
.admin-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.admin-nav li { list-style: none; }
.admin-nav a { color: var(--text); text-decoration: none; font-weight: 500; padding: 4px 0; display: inline-block; }
.admin-nav a:hover { color: var(--primary); }
.admin-nav a.active { color: var(--primary); font-weight: bold; border-bottom: 2px solid var(--primary); }
.admin-container { max-width: 1200px; margin: 24px auto; padding: 0 16px; }

/* 后台表格 */
.admin-container table { width: 100%; border-collapse: collapse; }
.admin-container table th,
.admin-container table td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; }
.admin-container table th { background: var(--primary-light); color: var(--primary-dark); }
.admin-container table tr:nth-child(even) td { background: #fffafa; }

/* 后台表单 */
.admin-container input[type="text"],
.admin-container input[type="password"],
.admin-container input[type="email"],
.admin-container textarea,
.admin-container select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-family: inherit;
  font-size: 14px;
}
.admin-container fieldset { border: 1px solid var(--border); border-radius: 6px; }

/* 后台移动端 */
@media (max-width: 900px) {
  .admin-nav ul { gap: 12px; }
  .admin-nav a { font-size: 14px; }
}