:root {
--primary: #0f2c2f;
--accent: #d4a373;
--bg-light: #faf9f7;
--border: #e6e2dd;
--text-secondary: #5e5b56;
--ad-tag: #b7476c;
    }

    body {
font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
background: #fff;
color: #1e1e1e;
margin: 0;
display: flex;
min-height: 100vh;
    }

    /* ========== 左侧固定导航 (PC) ========== */
    .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);
    }
    .sidebar .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;
transition: all 0.2s;
display: flex;
align-items: center;
gap: 0.7rem;
    }
    .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);
    }
    .sidebar .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;
    }

    /* ========== 右侧主内容区 ========== */
    .main-content {
margin-left: 260px;
flex: 1;
padding: 2rem 3rem;
background: #fff;
    }

    /* 焦点图区域 */
    .feature-hero {
display: grid;
grid-template-columns: 1.4fr 0.8fr;
gap: 1.5rem;
margin-bottom: 3rem;
    }
    .hero-main {
background: linear-gradient(135deg, #1e3a3f, #264b50);
border-radius: 28px;
padding: 2.5rem;
color: white;
display: flex;
flex-direction: column;
justify-content: flex-end;
background-size: cover;
background-blend-mode: overlay;
position: relative;
overflow: hidden;
min-height: 300px;
    }
    .hero-main .sponsored-tag {
background: rgba(255,255,255,0.2);
backdrop-filter: blur(6px);
padding: 0.3rem 1rem;
border-radius: 20px;
font-size: 0.75rem;
display: inline-block;
width: fit-content;
margin-bottom: 1rem;
    }
    .hero-main h2 {
font-weight: 700;
font-size: 2rem;
text-shadow: 0 4px 12px rgba(0,0,0,0.4);
    }
    .hero-side {
background: #f5f2ee;
border-radius: 28px;
padding: 2rem;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
text-align: center;
background-size: cover;
background-blend-mode: soft-light;
    }
    .ad-label-small {
font-size: 0.65rem;
background: var(--ad-tag);
color: white;
padding: 0.2rem 0.8rem;
border-radius: 20px;
margin-bottom: 0.8rem;
display: inline-block;
    }

    /* 内容三栏 */
    .content-grid {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 1.8rem;
margin: 2.5rem 0;
    }
    .content-card {
background: #fff;
border-radius: 20px;
overflow: hidden;
box-shadow: 0 8px 24px rgba(0,0,0,0.03);
transition: all 0.2s;
border: 1px solid #f0ede8;
    }
    .content-card:hover {
transform: translateY(-5px);
box-shadow: 0 20px 35px rgba(0,0,0,0.06);
    }
    .card-img {
height: 180px;
background: #e9e6e1;
object-fit: cover;
    }
    .card-body {
padding: 1.3rem;
    }
    .native-ad-mini {
background: #fef8f2;
border: 1px dashed var(--accent);
border-radius: 20px;
padding: 1.4rem;
display: flex;
flex-direction: column;
justify-content: center;
text-align: center;
    }

    /* 品牌横向滑动 */
    .brand-strip {
display: flex;
gap: 1.2rem;
overflow-x: auto;
padding: 1rem 0 1.5rem;
scrollbar-width: thin;
margin: 2rem 0;
-webkit-overflow-scrolling: touch;
    }
    .brand-item {
flex: 0 0 auto;
width: 140px;
background: white;
border-radius: 18px;
padding: 1.2rem 0.8rem;
text-align: center;
border: 1px solid #ece8e2;
transition: 0.2s;
    }
    .brand-item:hover {
border-color: var(--accent);
background: #fdfaf7;
    }
    .brand-circle {
width: 50px;
height: 50px;
background: #f4f1ec;
border-radius: 50%;
margin: 0 auto 0.6rem;
display: flex;
align-items: center;
justify-content: center;
font-size: 1.5rem;
color: var(--primary);
    }

    .site-footer {
border-top: 1px solid #e9e5df;
margin-top: 3rem;
padding-top: 2rem;
display: flex;
flex-wrap: wrap;
justify-content: space-between;
font-size: 0.85rem;
color: #6f6b65;
    }

    /* ========== 移动端顶部导航 (隐藏左侧栏，显示汉堡菜单) ========== */
    .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);
    }
    /* 移动端菜单面板 */
    .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;
    }
    .mobile-menu .nav-link i {
width: 24px;
color: var(--accent);
    }

    /* ========== 响应式断点 ========== */
    @media (max-width: 992px) {
.sidebar {
  width: 220px;
  padding: 1.5rem 1rem;
}
.main-content {
  margin-left: 220px;
  padding: 1.8rem 1.8rem;
}
.feature-hero {
  grid-template-columns: 1fr;
}
.content-grid {
  grid-template-columns: repeat(2, 1fr);
}
    }

    @media (max-width: 768px) {
body {
  flex-direction: column;
  padding-top: 70px; /* 给顶部固定导航留出空间 */
}
/* 隐藏PC侧边栏 */
.sidebar {
  display: none;
}
/* 显示移动端导航 */
.mobile-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.main-content {
  margin-left: 0;
  padding: 1.2rem 1rem;
}
.feature-hero {
  grid-template-columns: 1fr;
  gap: 1rem;
}
.hero-main {
  min-height: 220px;
  padding: 1.8rem;
}
.hero-main h2 {
  font-size: 1.4rem;
}
.hero-side {
  min-height: 160px;
}
.content-grid {
  grid-template-columns: 1fr;
  gap: 1.2rem;
}
.card-img {
  height: 180px;
}
.brand-strip {
  gap: 0.8rem;
}
.brand-item {
  width: 120px;
  padding: 1rem 0.6rem;
}
.site-footer {
  flex-direction: column;
  text-align: center;
  gap: 0.6rem;
}
    }
.cardtit {color:#000;text-decoration: none;}
.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;}