:root {
  --primary: #0f2c2f;
  --accent: #d4a373;
  --border: #e6e2dd;
  --ad-tag: #b7476c;
}
body {
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  background: #fff;
  color: #1e1e1e;
  margin: 0;
  display: flex;
  min-height: 100vh;
}
/* PC 左侧导航 */
.sidebar {
  width: 260px;
  background: #fefcf9;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 2rem 1.5rem;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 1030;
  overflow-y: auto;
}
.sidebar .logo {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--primary);
  margin-bottom: 2.5rem;
}
.sidebar .logo i { color: var(--accent); }
.nav-flex { flex-direction: column; display: flex; gap: 0.5rem; }
.sidebar .nav-link {
  color: #3a3a3a;
  padding: 0.7rem 1rem;
  border-radius: 10px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  transition: all 0.2s;
}
.sidebar .nav-link i { width: 20px; text-align: center; color: #8a8a8a; }
.sidebar .nav-link:hover,
.sidebar .nav-link.active {
  background: #f0ebe4;
  color: var(--primary);
  font-weight: 600;
}
.sidebar .nav-link.active i { color: var(--accent); }
.bottom-actions { margin-top: auto; display: flex; flex-direction: column; gap: 0.8rem; }
.btn-outline-accent { border: 1px solid var(--accent); color: var(--primary); border-radius: 20px; padding: 0.5rem 1rem; font-weight: 500; background: transparent; }
.btn-outline-accent:hover { background: var(--accent); color: white; }
.btn-solid-accent { background: var(--accent); color: white; border-radius: 20px; padding: 0.5rem 1rem; font-weight: 600; border: none; }

.main-content {
  margin-left: 260px;
  flex: 1;
  padding: 2rem 3rem;
  background: #fff;
}
.news-item {
  border-bottom: 1px solid #f0ede8;
  padding: 1.5rem 0;
  transition: background 0.2s;
}
.news-item:hover { background: #faf9f7; }
.news-item:last-child { border-bottom: none; }

/* 移动端导航 */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1040;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0.8rem 1.2rem;
}
.mobile-nav .navbar-brand { font-weight: 700; color: var(--primary); font-size: 1.3rem; }
.mobile-nav .navbar-toggler { border: none; padding: 0.4rem; font-size: 1.5rem; color: var(--primary); }
.mobile-menu {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(15px);
  z-index: 1050;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  padding: 2rem 1.5rem;
}
.mobile-menu.show { transform: translateX(0); }
.mobile-menu .close-btn {
  align-self: flex-end;
  font-size: 1.8rem;
  background: none;
  border: none;
  color: var(--primary);
  margin-bottom: 2rem;
}
.mobile-menu .nav-link {
  font-size: 1.2rem;
  padding: 1rem 0;
  border-bottom: 1px solid #f0ede8;
  color: #333;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

@media (max-width: 992px) {
  .sidebar { width: 220px; padding: 1.5rem 1rem; }
  .main-content { margin-left: 220px; padding: 1.8rem 1.8rem; }
}
@media (max-width: 768px) {
  body { flex-direction: column; padding-top: 70px; }
  .sidebar { display: none; }
  .mobile-nav { display: flex; align-items: center; justify-content: space-between; }
  .main-content { margin-left: 0; padding: 1.2rem 1rem; }
  .news-item { padding: 1.2rem 0; }
}
.btn-outline-accent a {color:#000;text-decoration:none;}
.btn-solid-accent a {color:#fff;text-decoration:none;}
.fw-bold a {color:#000;text-decoration:none;}