/* roulang page: index */
/* ========== 设计变量 ========== */
:root {
  --color-primary: #1a2a3a;
  --color-primary-light: #243447;
  --color-accent: #c9a96e;
  --color-accent-light: #d9bf8a;
  --color-accent-dark: #b08a4c;
  --color-bg: #faf8f5;
  --color-bg-alt: #f0ece6;
  --color-bg-dark: #1a2a3a;
  --color-bg-card: #ffffff;
  --color-text: #2c2c2c;
  --color-text-secondary: #5c5c5c;
  --color-text-light: #8a8a8a;
  --color-text-on-dark: #e8e4dc;
  --color-border: #e0dcd4;
  --color-border-light: #ede8e0;
  --color-success: #4a9c6c;
  --color-warning: #d4a344;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.1), 0 4px 12px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 48px rgba(0,0,0,0.12), 0 6px 18px rgba(0,0,0,0.06);
  --transition-fast: 0.18s ease;
  --transition-base: 0.28s ease;
  --transition-slow: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1.2);
  --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-width: 1200px;
  --nav-height: 68px;
  --bottom-tab-height: 60px;
}

/* ========== 基础重置 ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;}
body{font-family:var(--font-body);font-size:16px;line-height:1.7;color:var(--color-text);background:var(--color-bg);min-height:100vh;overflow-x:hidden;}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--transition-fast);}
a:hover{color:var(--color-accent);}
button,input,textarea{font-family:inherit;font-size:inherit;}
ul,ol{list-style:none;}
h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;line-height:1.3;color:var(--color-primary);}
h1{font-size:clamp(2rem, 4.5vw, 3.2rem);letter-spacing:-0.02em;}
h2{font-size:clamp(1.5rem, 3vw, 2.2rem);letter-spacing:-0.01em;}
h3{font-size:clamp(1.15rem,2vw,1.5rem);}
:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px;border-radius:var(--radius-sm);}

/* ========== 容器 ========== */
.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px;}
.container--narrow{max-width:900px;}
.container--wide{max-width:1320px;}

/* ========== 导航 header ========== */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,0.95);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--color-border-light);height:var(--nav-height);display:flex;align-items:center;transition:box-shadow var(--transition-base);}
.site-header.scrolled{box-shadow:var(--shadow-md);}
.header-inner{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px;}
.header-logo{display:flex;align-items:center;gap:10px;font-family:var(--font-heading);font-size:1.25rem;font-weight:700;color:var(--color-primary);letter-spacing:-0.01em;white-space:nowrap;flex-shrink:0;}
.header-logo .logo-icon{width:38px;height:38px;background:linear-gradient(135deg,var(--color-accent),var(--color-accent-dark));border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem;font-weight:700;flex-shrink:0;}
.header-logo:hover{color:var(--color-accent);}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{display:inline-flex;align-items:center;padding:8px 18px;border-radius:var(--radius-md);font-weight:500;font-size:0.95rem;color:var(--color-text-secondary);transition:all var(--transition-fast);position:relative;}
.nav-links a:hover{color:var(--color-accent);background:rgba(201,169,110,0.06);}
.nav-links a.active{color:var(--color-accent);background:rgba(201,169,110,0.1);font-weight:600;}
.nav-links a.active::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:20px;height:3px;background:var(--color-accent);border-radius:2px;}
.header-cta{display:inline-flex;align-items:center;gap:6px;padding:10px 22px;background:var(--color-accent);color:#fff;border-radius:var(--radius-md);font-weight:600;font-size:0.9rem;border:none;cursor:pointer;transition:all var(--transition-base);white-space:nowrap;}
.header-cta:hover{background:var(--color-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md);}
.header-cta:active{transform:translateY(0);}

/* 移动端汉堡菜单按钮 */
.mobile-menu-btn{display:none;width:40px;height:40px;border:none;background:transparent;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px;z-index:1001;padding:0;}
.mobile-menu-btn span{display:block;width:24px;height:2.5px;background:var(--color-primary);border-radius:2px;transition:all var(--transition-base);}
.mobile-menu-btn.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px);}
.mobile-menu-btn.open span:nth-child(2){opacity:0;}
.mobile-menu-btn.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px);}

/* 移动端抽屉菜单 */
.mobile-drawer{position:fixed;top:var(--nav-height);left:0;right:0;bottom:0;background:rgba(255,255,255,0.98);backdrop-filter:blur(20px);z-index:999;display:flex;flex-direction:column;padding:24px;transform:translateX(100%);transition:transform var(--transition-base);overflow-y:auto;}
.mobile-drawer.open{transform:translateX(0);}
.mobile-drawer a{display:block;padding:14px 20px;font-size:1.1rem;font-weight:500;color:var(--color-text);border-radius:var(--radius-md);transition:all var(--transition-fast);margin-bottom:2px;}
.mobile-drawer a:hover{background:rgba(201,169,110,0.08);color:var(--color-accent);}
.mobile-drawer a.active{color:var(--color-accent);font-weight:600;background:rgba(201,169,110,0.1);}

/* ========== 底部移动Tab导航 ========== */
.bottom-tab-bar{display:none;position:fixed;bottom:0;left:0;right:0;height:var(--bottom-tab-height);background:rgba(255,255,255,0.96);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-top:1px solid var(--color-border-light);z-index:1000;box-shadow:0 -2px 12px rgba(0,0,0,0.06);}
.bottom-tab-bar .tab-inner{display:flex;align-items:center;justify-content:space-around;height:100%;max-width:500px;margin:0 auto;padding:0 8px;}
.bottom-tab-bar a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;flex:1;height:100%;color:var(--color-text-light);font-size:0.7rem;font-weight:500;transition:all var(--transition-fast);position:relative;text-align:center;padding:4px 2px;}
.bottom-tab-bar a i{font-size:1.25rem;transition:all var(--transition-fast);}
.bottom-tab-bar a.active{color:var(--color-accent);font-weight:600;}
.bottom-tab-bar a.active::before{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:24px;height:3px;background:var(--color-accent);border-radius:0 0 3px 3px;}
.bottom-tab-bar a:hover{color:var(--color-accent);}

/* ========== 首屏 Hero ========== */
.hero{position:relative;min-height:85vh;display:flex;align-items:center;overflow:hidden;background:var(--color-bg-dark);}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:0.55;}
.hero-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(26,42,58,0.55) 0%,rgba(26,42,58,0.75) 60%,rgba(26,42,58,0.9) 100%);}
.hero-content{position:relative;z-index:1;width:100%;max-width:var(--max-width);margin:0 auto;padding:100px 24px 80px;text-align:center;}
.hero-badge{display:inline-block;padding:8px 20px;background:rgba(201,169,110,0.2);border:1px solid rgba(201,169,110,0.4);border-radius:50px;color:var(--color-accent-light);font-size:0.85rem;font-weight:600;letter-spacing:0.04em;margin-bottom:24px;backdrop-filter:blur(4px);}
.hero-content h1{color:#fff;margin-bottom:20px;text-shadow:0 2px 12px rgba(0,0,0,0.3);}
.hero-content .hero-subtitle{font-size:clamp(1rem,2vw,1.25rem);color:rgba(255,255,255,0.85);max-width:650px;margin:0 auto 36px;line-height:1.8;}
.hero-buttons{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:50px;font-weight:600;font-size:0.95rem;cursor:pointer;border:none;transition:all var(--transition-base);text-align:center;letter-spacing:0.01em;}
.btn-primary{background:var(--color-accent);color:#fff;box-shadow:0 4px 16px rgba(201,169,110,0.35);}
.btn-primary:hover{background:var(--color-accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(201,169,110,0.45);}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,0.6);}
.btn-outline:hover{background:rgba(255,255,255,0.1);border-color:#fff;color:#fff;transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:0.85rem;border-radius:50px;}
.btn-accent-ghost{background:transparent;color:var(--color-accent);border:1.5px solid var(--color-accent);}
.btn-accent-ghost:hover{background:var(--color-accent);color:#fff;}

/* ========== 板块通用 ========== */
.section{padding:70px 0;}
.section--alt{background:var(--color-bg-alt);}
.section--dark{background:var(--color-bg-dark);color:var(--color-text-on-dark);}
.section--dark h2,.section--dark h3{color:#fff;}
.section-header{text-align:center;margin-bottom:48px;}
.section-header h2{margin-bottom:12px;}
.section-header p{color:var(--color-text-secondary);font-size:1.05rem;max-width:600px;margin:0 auto;}
.section--dark .section-header p{color:rgba(255,255,255,0.7);}
.section-tag{display:inline-block;padding:5px 16px;background:rgba(201,169,110,0.12);color:var(--color-accent-dark);border-radius:50px;font-size:0.8rem;font-weight:600;letter-spacing:0.03em;margin-bottom:12px;}
.section--dark .section-tag{background:rgba(201,169,110,0.2);color:var(--color-accent-light);}

/* ========== 特色卡片网格 ========== */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.feature-card{background:var(--color-bg-card);border-radius:var(--radius-lg);padding:36px 28px;text-align:center;border:1px solid var(--color-border-light);transition:all var(--transition-base);position:relative;overflow:hidden;}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--color-accent),var(--color-accent-light));opacity:0;transition:opacity var(--transition-base);}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent;}
.feature-card:hover::before{opacity:1;}
.feature-icon{width:56px;height:56px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:1.5rem;background:rgba(201,169,110,0.1);color:var(--color-accent-dark);transition:all var(--transition-base);}
.feature-card:hover .feature-icon{background:var(--color-accent);color:#fff;transform:scale(1.08);}
.feature-card h3{margin-bottom:10px;font-size:1.2rem;}
.feature-card p{color:var(--color-text-secondary);font-size:0.9rem;line-height:1.7;}

/* ========== 分类入口卡片 ========== */
.category-entry{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;}
.category-card-link{display:block;}
.category-card{position:relative;border-radius:var(--radius-xl);overflow:hidden;height:320px;cursor:pointer;transition:all var(--transition-base);}
.category-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl);}
.category-card img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-slow);}
.category-card:hover img{transform:scale(1.06);}
.category-card-overlay{position:absolute;inset:0;background:linear-gradient(0deg,rgba(26,42,58,0.85) 0%,rgba(26,42,58,0.3) 50%,rgba(26,42,58,0.05) 100%);display:flex;flex-direction:column;justify-content:flex-end;padding:28px;}
.category-card-overlay h3{color:#fff;font-size:1.4rem;margin-bottom:6px;}
.category-card-overlay p{color:rgba(255,255,255,0.8);font-size:0.9rem;}
.category-card-tag{position:absolute;top:20px;left:20px;padding:6px 14px;background:var(--color-accent);color:#fff;border-radius:50px;font-size:0.78rem;font-weight:600;z-index:2;}

/* ========== 资讯列表 ========== */
.posts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{background:var(--color-bg-card);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--color-border-light);transition:all var(--transition-base);display:flex;flex-direction:column;}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent;}
.post-card-thumb{position:relative;height:200px;overflow:hidden;}
.post-card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-slow);}
.post-card:hover .post-card-thumb img{transform:scale(1.05);}
.post-card-body{padding:20px 22px 18px;flex:1;display:flex;flex-direction:column;}
.post-card-category{display:inline-block;font-size:0.75rem;font-weight:600;color:var(--color-accent-dark);background:rgba(201,169,110,0.1);padding:3px 10px;border-radius:50px;margin-bottom:10px;width:fit-content;}
.post-card-body h3{font-size:1.05rem;margin-bottom:8px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card-body h3 a{color:var(--color-primary);}
.post-card-body h3 a:hover{color:var(--color-accent);}
.post-card-excerpt{color:var(--color-text-secondary);font-size:0.85rem;line-height:1.6;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px;}
.post-card-meta{display:flex;align-items:center;gap:12px;font-size:0.78rem;color:var(--color-text-light);padding-top:12px;border-top:1px solid var(--color-border-light);}
.posts-empty{text-align:center;padding:50px 20px;color:var(--color-text-secondary);font-size:1rem;grid-column:1/-1;}

/* ========== 数据统计 ========== */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center;}
.stat-item{padding:30px 20px;background:var(--color-bg-card);border-radius:var(--radius-lg);border:1px solid var(--color-border-light);transition:all var(--transition-base);}
.stat-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.stat-number{font-size:2.6rem;font-weight:800;color:var(--color-accent);font-family:var(--font-heading);letter-spacing:-0.02em;line-height:1.1;}
.stat-label{color:var(--color-text-secondary);font-size:0.9rem;margin-top:6px;}
.stat-suffix{font-size:1.4rem;font-weight:700;color:var(--color-accent);}

/* ========== 精选推荐 ========== */
.featured-row{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
.featured-row.reverse{direction:rtl;}
.featured-row.reverse .featured-text{direction:ltr;}
.featured-image{border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-lg);}
.featured-image img{width:100%;height:400px;object-fit:cover;transition:transform var(--transition-slow);}
.featured-image:hover img{transform:scale(1.03);}
.featured-text h2{font-size:1.7rem;margin-bottom:14px;}
.featured-text p{color:var(--color-text-secondary);line-height:1.8;margin-bottom:20px;font-size:0.98rem;}
.featured-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.featured-tags span{padding:5px 14px;background:rgba(201,169,110,0.08);color:var(--color-accent-dark);border-radius:50px;font-size:0.8rem;font-weight:500;}

/* ========== FAQ ========== */
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:var(--color-bg-card);border-radius:var(--radius-lg);border:1px solid var(--color-border-light);overflow:hidden;transition:all var(--transition-fast);}
.faq-item:hover{border-color:var(--color-accent);}
.faq-question{padding:18px 24px;font-weight:600;font-size:1rem;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:12px;user-select:none;color:var(--color-primary);transition:color var(--transition-fast);}
.faq-question:hover{color:var(--color-accent);}
.faq-question i{transition:transform var(--transition-base);color:var(--color-accent);font-size:0.9rem;}
.faq-item.open .faq-question i{transform:rotate(180deg);}
.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:all var(--transition-base);color:var(--color-text-secondary);line-height:1.8;font-size:0.93rem;}
.faq-item.open .faq-answer{padding:0 24px 20px;max-height:300px;}

/* ========== CTA ========== */
.cta-section{position:relative;overflow:hidden;background:var(--color-bg-dark);}
.cta-bg{position:absolute;inset:0;z-index:0;}
.cta-bg img{width:100%;height:100%;object-fit:cover;opacity:0.3;}
.cta-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(26,42,58,0.9) 0%,rgba(26,42,58,0.7) 100%);}
.cta-content{position:relative;z-index:1;text-align:center;padding:80px 24px;}
.cta-content h2{color:#fff;font-size:2rem;margin-bottom:14px;}
.cta-content p{color:rgba(255,255,255,0.8);font-size:1.05rem;max-width:550px;margin:0 auto 28px;}
.cta-form{display:flex;gap:10px;max-width:480px;margin:0 auto;flex-wrap:wrap;justify-content:center;}
.cta-form input{flex:1;min-width:200px;padding:13px 20px;border-radius:50px;border:2px solid rgba(255,255,255,0.3);background:rgba(255,255,255,0.1);color:#fff;font-size:0.95rem;outline:none;transition:all var(--transition-fast);}
.cta-form input::placeholder{color:rgba(255,255,255,0.5);}
.cta-form input:focus{border-color:var(--color-accent);background:rgba(255,255,255,0.18);}
.cta-form .btn{padding:13px 28px;border-radius:50px;flex-shrink:0;}

/* ========== 页脚 ========== */
.site-footer{background:var(--color-primary);color:var(--color-text-on-dark);padding:50px 0 30px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;margin-bottom:36px;}
.footer-brand .footer-logo{font-family:var(--font-heading);font-size:1.2rem;font-weight:700;color:#fff;margin-bottom:10px;display:flex;align-items:center;gap:8px;}
.footer-brand .footer-logo .logo-icon{width:32px;height:32px;background:var(--color-accent);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:#fff;font-size:0.9rem;font-weight:700;}
.footer-brand p{color:rgba(255,255,255,0.6);font-size:0.85rem;line-height:1.7;max-width:260px;}
.footer-col h4{color:#fff;font-size:0.95rem;margin-bottom:14px;font-weight:600;}
.footer-col a{display:block;color:rgba(255,255,255,0.6);font-size:0.85rem;padding:5px 0;transition:color var(--transition-fast);}
.footer-col a:hover{color:var(--color-accent-light);}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.15);padding-top:24px;text-align:center;font-size:0.8rem;color:rgba(255,255,255,0.5);}
.footer-bottom a{color:rgba(255,255,255,0.7);}
.footer-bottom a:hover{color:var(--color-accent-light);}

/* ========== 响应式 ========== */
@media (max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .posts-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .stats-row{grid-template-columns:repeat(2,1fr);gap:16px;}
  .featured-row{grid-template-columns:1fr;gap:28px;}
  .featured-image img{height:300px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .category-entry{grid-template-columns:1fr;gap:20px;}
  .category-card{height:260px;}
}
@media (max-width:768px){
  .nav-links{display:none;}
  .header-cta{display:none;}
  .mobile-menu-btn{display:flex;}
  .bottom-tab-bar{display:block;}
  body{padding-bottom:var(--bottom-tab-height);}
  .hero{min-height:70vh;}
  .hero-content{padding:60px 20px 50px;}
  .section{padding:48px 0;}
  .features-grid{grid-template-columns:1fr;gap:16px;}
  .posts-grid{grid-template-columns:1fr;gap:18px;}
  .stats-row{grid-template-columns:repeat(2,1fr);gap:12px;}
  .stat-number{font-size:2rem;}
  .category-card{height:220px;}
  .featured-image img{height:240px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;text-align:center;}
  .footer-brand p{margin:0 auto;}
  .footer-brand .footer-logo{justify-content:center;}
  .cta-content h2{font-size:1.5rem;}
  .cta-form{flex-direction:column;align-items:stretch;}
  .cta-form input{min-width:auto;}
  .faq-question{padding:15px 18px;font-size:0.9rem;}
  .faq-answer{padding:0 18px;}
  .faq-item.open .faq-answer{padding:0 18px 16px;}
  .feature-card{padding:26px 20px;}
  .post-card-thumb{height:180px;}
  .section-header{margin-bottom:32px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .header-inner{padding:0 16px;}
  .header-logo{font-size:1.05rem;}
  .header-logo .logo-icon{width:32px;height:32px;font-size:0.85rem;}
  .hero-content h1{font-size:1.6rem;}
  .hero-content .hero-subtitle{font-size:0.9rem;}
  .hero-buttons{flex-direction:column;align-items:center;}
  .btn{width:100%;justify-content:center;padding:12px 24px;font-size:0.9rem;}
  .stats-row{grid-template-columns:1fr 1fr;gap:10px;}
  .stat-item{padding:20px 12px;}
  .stat-number{font-size:1.7rem;}
  .category-card{height:180px;}
  .category-card-overlay{padding:18px;}
  .category-card-overlay h3{font-size:1.1rem;}
  .section{padding:36px 0;}
  .cta-content{padding:50px 16px;}
  .cta-content h2{font-size:1.3rem;}
  .bottom-tab-bar a{font-size:0.65rem;}
  .bottom-tab-bar a i{font-size:1.1rem;}
}

/* roulang page: article */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Noto+Serif+SC:wght@400;500;600;700;900&display=swap');
        :root {
            --brand: #1a1a2e;
            --brand-light: #2a2a4a;
            --brand-dark: #0f0f1e;
            --gold: #c9a96e;
            --gold-light: #dbc08a;
            --gold-dark: #a88950;
            --warm-bg: #f8f7f4;
            --warm-dark: #ebe8e0;
            --text-primary: #2d2d2d;
            --text-mute: #6b6b6b;
            --border: #e0dcd5;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.12);
            --transition: 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--warm-bg);
            overflow-x: hidden;
            padding-bottom: 0;
        }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; outline: none; }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .container-narrow { max-width: 780px; }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--brand);
            white-space: nowrap;
            letter-spacing: -0.01em;
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--brand);
            color: var(--gold);
            border-radius: var(--radius-sm);
            font-weight: 800;
            font-size: 1.05rem;
            flex-shrink: 0;
        }
        .nav-links { display: flex; align-items: center; gap: 6px; }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 8px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-mute);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover { color: var(--brand); background: rgba(26, 26, 46, 0.04); }
        .nav-links a.active { color: var(--gold-dark); background: rgba(201, 169, 110, 0.1); font-weight: 600; }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            background: var(--gold);
            color: #fff !important;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover { background: var(--gold-dark); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(201, 169, 110, 0.35); }
        .mobile-menu-btn { display: none; background: none; font-size: 1.5rem; color: var(--brand); padding: 6px; border-radius: 6px; }
        .mobile-menu-btn:hover { background: rgba(26, 26, 46, 0.06); }

        /* Bottom Tab Navigation - Mobile */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 99;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid var(--border);
            padding: 6px 0 env(safe-area-inset-bottom, 8px) 0;
        }
        .bottom-tab-nav .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 500px;
            margin: 0 auto;
        }
        .bottom-tab-nav .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            padding: 6px 14px;
            border-radius: 10px;
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--text-mute);
            transition: all var(--transition);
            min-width: 56px;
        }
        .bottom-tab-nav .tab-item i { font-size: 1.25rem; transition: color var(--transition); }
        .bottom-tab-nav .tab-item.active { color: var(--gold-dark); font-weight: 600; }
        .bottom-tab-nav .tab-item.active i { color: var(--gold); }
        .bottom-tab-nav .tab-item:hover { color: var(--brand); }

        /* Article Hero */
        .article-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: flex-end;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 80px 0 48px;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 15, 30, 0.35) 0%, rgba(15, 15, 30, 0.65) 60%, rgba(15, 15, 30, 0.88) 100%);
            z-index: 1;
        }
        .article-hero .hero-content { position: relative; z-index: 2; color: #fff; }
        .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: rgba(255, 255, 255, 0.75); margin-bottom: 16px; flex-wrap: wrap; }
        .breadcrumb a { color: rgba(255, 255, 255, 0.85); transition: color var(--transition); }
        .breadcrumb a:hover { color: var(--gold-light); }
        .breadcrumb .sep { color: rgba(255, 255, 255, 0.5); font-size: 0.7rem; }
        .article-category-tag {
            display: inline-block;
            padding: 5px 14px;
            background: var(--gold);
            color: #fff;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 14px;
        }
        .article-hero h1 {
            font-family: 'Noto Serif SC', 'STSong', serif;
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: 0.01em;
            max-width: 780px;
        }
        .article-meta-hero { display: flex; align-items: center; gap: 16px; margin-top: 14px; font-size: 0.9rem; color: rgba(255, 255, 255, 0.75); flex-wrap: wrap; }
        .article-meta-hero span { display: inline-flex; align-items: center; gap: 5px; }

        /* Article Body */
        .article-body-section { padding: 56px 0 48px; }
        .article-main {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 48px 52px;
            margin-bottom: 40px;
        }
        .article-body-content {
            font-family: 'Noto Serif SC', 'STSong', serif;
            font-size: 1.1rem;
            line-height: 1.9;
            color: var(--text-primary);
        }
        .article-body-content p { margin-bottom: 1.4em; }
        .article-body-content h2 {
            font-family: 'Noto Serif SC', serif;
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--brand);
            margin: 2em 0 0.8em;
            padding-left: 16px;
            border-left: 4px solid var(--gold);
        }
        .article-body-content h3 { font-size: 1.25rem; font-weight: 600; color: var(--brand); margin: 1.6em 0 0.6em; }
        .article-body-content blockquote {
            margin: 2em 0;
            padding: 24px 32px;
            background: var(--warm-bg);
            border-left: 5px solid var(--gold);
            border-radius: 0 var(--radius) var(--radius) 0;
            font-style: italic;
            color: var(--text-mute);
            position: relative;
        }
        .article-body-content blockquote::before { content: '"'; font-size: 3rem; color: var(--gold-light); position: absolute; left: 16px; top: 4px; line-height: 1; font-family: 'Noto Serif SC', serif; opacity: 0.5; }
        .article-body-content img { border-radius: var(--radius); margin: 1.5em 0; }
        .article-body-content ul, .article-body-content ol { margin: 1em 0; padding-left: 1.5em; }
        .article-body-content li { margin-bottom: 0.5em; }
        .article-body-content a { color: var(--gold-dark); text-decoration: underline; text-underline-offset: 3px; }
        .article-body-content a:hover { color: var(--gold); }
        .article-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border); }
        .article-tags span.tag {
            display: inline-block;
            padding: 5px 12px;
            background: var(--warm-bg);
            color: var(--text-mute);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            transition: all var(--transition);
        }
        .article-tags span.tag:hover { background: var(--warm-dark); color: var(--brand); }

        /* Not Found */
        .not-found-block { text-align: center; padding: 60px 20px; }
        .not-found-block .nf-icon { font-size: 4rem; color: var(--gold); margin-bottom: 16px; }
        .not-found-block h2 { font-size: 1.6rem; color: var(--brand); margin-bottom: 10px; }
        .not-found-block p { color: var(--text-mute); margin-bottom: 20px; }
        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 12px 24px;
            background: var(--gold);
            color: #fff;
            border-radius: 8px;
            font-weight: 600;
            transition: all var(--transition);
        }
        .btn-back:hover { background: var(--gold-dark); transform: translateY(-1px); box-shadow: var(--shadow); }

        /* Related Posts */
        .related-section { padding: 0 0 56px; }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--gold-dark);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 4px;
        }
        .section-title {
            font-family: 'Noto Serif SC', serif;
            font-size: 2rem;
            font-weight: 700;
            color: var(--brand);
            margin-bottom: 28px;
            letter-spacing: 0.01em;
        }
        .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .related-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
        .related-card .card-img { height: 180px; background-size: cover; background-position: center; position: relative; }
        .related-card .card-img .card-cat {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 10px;
            background: rgba(26, 26, 46, 0.8);
            color: #fff;
            border-radius: 14px;
            font-size: 0.7rem;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }
        .related-card .card-body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; }
        .related-card .card-body h3 { font-size: 1rem; font-weight: 600; color: var(--brand); line-height: 1.4; margin-bottom: 8px; flex: 1; }
        .related-card .card-body h3 a:hover { color: var(--gold-dark); }
        .related-card .card-body .card-date { font-size: 0.8rem; color: var(--text-mute); display: flex; align-items: center; gap: 4px; }

        /* FAQ */
        .faq-section { padding: 56px 0; background: #fff; }
        .faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 8px; }
        .faq-item {
            background: var(--warm-bg);
            border-radius: var(--radius);
            padding: 20px 24px;
            cursor: pointer;
            transition: all var(--transition);
            border: 2px solid transparent;
        }
        .faq-item:hover { border-color: var(--gold-light); box-shadow: var(--shadow-sm); }
        .faq-item h4 { font-size: 0.95rem; font-weight: 600; color: var(--brand); display: flex; align-items: center; gap: 8px; }
        .faq-item h4 i { color: var(--gold); font-size: 0.75rem; transition: transform var(--transition); }
        .faq-item.open h4 i { transform: rotate(90deg); }
        .faq-item .faq-answer { margin-top: 10px; font-size: 0.9rem; color: var(--text-mute); line-height: 1.6; display: none; }
        .faq-item.open .faq-answer { display: block; }

        /* CTA */
        .cta-section { padding: 64px 0; text-align: center; }
        .cta-card {
            background: var(--brand);
            border-radius: var(--radius-lg);
            padding: 52px 40px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-card::after {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(201, 169, 110, 0.15) 0%, transparent 70%);
            top: -60px;
            right: -60px;
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-card h2 { font-family: 'Noto Serif SC', serif; font-size: 2rem; font-weight: 700; margin-bottom: 10px; position: relative; z-index: 1; }
        .cta-card p { color: rgba(255, 255, 255, 0.75); font-size: 1.05rem; margin-bottom: 24px; position: relative; z-index: 1; }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: var(--gold);
            color: #fff;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            position: relative;
            z-index: 1;
        }
        .btn-cta:hover { background: var(--gold-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(201, 169, 110, 0.4); }

        /* Footer */
        .site-footer { background: var(--brand); color: rgba(255, 255, 255, 0.75); padding: 48px 0 20px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
        .footer-logo { font-size: 1.15rem; font-weight: 700; color: #fff; display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
        .footer-logo .logo-icon { display: flex; align-items: center; justify-content: center; width: 32px; height: 32px; background: var(--gold); color: #fff; border-radius: 6px; font-weight: 800; font-size: 0.85rem; }
        .footer-brand p { font-size: 0.85rem; line-height: 1.6; }
        .footer-col h4 { color: #fff; font-weight: 600; font-size: 0.9rem; margin-bottom: 12px; letter-spacing: 0.02em; }
        .footer-col a { display: block; font-size: 0.85rem; color: rgba(255, 255, 255, 0.65); margin-bottom: 7px; transition: color var(--transition); }
        .footer-col a:hover { color: var(--gold-light); }
        .footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.12); padding-top: 16px; text-align: center; font-size: 0.8rem; color: rgba(255, 255, 255, 0.5); }

        @media (max-width: 1024px) {
            .article-hero { min-height: 340px; padding: 60px 0 36px; }
            .article-hero h1 { font-size: 2rem; }
            .article-main { padding: 32px 28px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .faq-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            .header-inner { height: 56px; }
            .nav-links { display: none; }
            .nav-links.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
            }
            .nav-links.open a { width: 100%; padding: 12px 16px; font-size: 1rem; }
            .mobile-menu-btn { display: block; }
            .nav-cta { display: none; }
            .bottom-tab-nav { display: block; }
            body { padding-bottom: 70px; }
            .article-hero { min-height: 280px; padding: 48px 0 28px; }
            .article-hero h1 { font-size: 1.55rem; }
            .article-main { padding: 24px 18px; border-radius: var(--radius); }
            .article-body-content { font-size: 1rem; }
            .article-body-content h2 { font-size: 1.25rem; }
            .related-grid { grid-template-columns: 1fr; }
            .related-card .card-img { height: 160px; }
            .footer-grid { grid-template-columns: 1fr; gap: 20px; }
            .section-title { font-size: 1.5rem; }
            .cta-card { padding: 36px 20px; }
            .cta-card h2 { font-size: 1.5rem; }
            .breadcrumb { font-size: 0.75rem; }
            .article-category-tag { font-size: 0.7rem; padding: 4px 10px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 14px; }
            .article-hero { min-height: 240px; padding: 40px 0 20px; }
            .article-hero h1 { font-size: 1.3rem; }
            .article-main { padding: 18px 14px; }
            .article-body-content { font-size: 0.95rem; }
            .related-card .card-img { height: 140px; }
            .article-meta-hero { font-size: 0.75rem; gap: 8px; }
            .article-hero .hero-content { padding: 0; }
        }

/* roulang page: category1 */
/* ============ 设计变量 ============ */
        :root {
            --color-primary: #1a3650;
            --color-primary-light: #264f6b;
            --color-primary-dark: #0f2130;
            --color-accent: #b8935a;
            --color-accent-light: #d4b87a;
            --color-accent-dark: #8c6d3f;
            --color-bg: #fafaf7;
            --color-bg-alt: #f3f0ea;
            --color-bg-dark: #1a1f25;
            --color-surface: #ffffff;
            --color-surface-hover: #fdfcfa;
            --color-text: #2c2c2c;
            --color-text-strong: #1a1a1a;
            --color-text-muted: #6b6b6b;
            --color-text-light: #999999;
            --color-text-on-dark: #e8e6e0;
            --color-border: #e5e0d8;
            --color-border-light: #f0ece6;
            --color-success: #4a8c5c;
            --color-warning: #c4943a;
            --color-danger: #b84c4c;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50%;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 6px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-xl: 0 16px 48px rgba(0,0,0,0.12);
            --shadow-card: 0 2px 12px rgba(0,0,0,0.05), 0 1px 3px rgba(0,0,0,0.04);
            --shadow-card-hover: 0 8px 28px rgba(0,0,0,0.10), 0 4px 8px rgba(0,0,0,0.05);
            --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-serif: 'Noto Serif SC', 'STSong', 'SimSun', 'Songti SC', Georgia, serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Monaco', monospace;
            --space-xs: 4px;
            --space-sm: 8px;
            --space-md: 16px;
            --space-lg: 24px;
            --space-xl: 32px;
            --space-2xl: 48px;
            --space-3xl: 64px;
            --space-4xl: 80px;
            --header-height: 68px;
            --bottom-tab-height: 60px;
            --max-width: 1200px;
            --max-width-narrow: 860px;
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1.2);
        }

        /* ============ Reset & Base ============ */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-bottom: var(--bottom-tab-height);
        }
        @media (min-width: 769px) {
            body {
                padding-bottom: 0;
            }
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-light);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }
        h1, h2, h3, h4, h5, h6 {
            color: var(--color-text-strong);
            line-height: 1.35;
            font-weight: 700;
        }
        ul, ol {
            list-style: none;
        }
        hr {
            border: none;
            border-top: 1px solid var(--color-border);
            margin: var(--space-xl) 0;
        }
        ::selection {
            background-color: var(--color-accent-light);
            color: var(--color-primary-dark);
        }

        /* ============ Container ============ */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--space-lg);
            padding-right: var(--space-lg);
        }
        .container--narrow {
            max-width: var(--max-width-narrow);
        }
        @media (max-width: 768px) {
            .container {
                padding-left: var(--space-md);
                padding-right: var(--space-md);
            }
        }

        /* ============ Header & Navigation ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-lg);
            height: 100%;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            letter-spacing: 0.02em;
            flex-shrink: 0;
            transition: opacity var(--transition-fast);
        }
        .header-logo:hover {
            opacity: 0.85;
            color: var(--color-primary-dark);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            color: #fff;
            border-radius: var(--radius-md);
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(26, 54, 80, 0.25);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: var(--color-bg-alt);
            color: var(--color-primary);
        }
        .nav-links a.active {
            background: var(--color-primary);
            color: #ffffff;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(26, 54, 80, 0.2);
        }
        .nav-links a.active:hover {
            background: var(--color-primary-light);
            color: #ffffff;
        }
        .header-search-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            color: var(--color-text-muted);
            transition: all var(--transition-fast);
            font-size: 1.05rem;
            margin-left: var(--space-sm);
        }
        .header-search-btn:hover {
            background: var(--color-bg-alt);
            color: var(--color-primary);
        }
        .mobile-menu-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            color: var(--color-text);
            font-size: 1.3rem;
            transition: background var(--transition-fast);
        }
        .mobile-menu-toggle:hover {
            background: var(--color-bg-alt);
        }
        @media (max-width: 768px) {
            .header-inner {
                padding: 0 var(--space-md);
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: var(--space-md);
                gap: var(--space-xs);
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-links.nav-open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                justify-content: center;
                padding: 12px 18px;
                font-size: 1rem;
                border-radius: var(--radius-md);
            }
            .mobile-menu-toggle {
                display: inline-flex;
            }
            .header-search-btn {
                display: none;
            }
        }

        /* ============ Bottom Tab Navigation (Mobile) ============ */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1001;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--color-border-light);
            box-shadow: 0 -2px 12px rgba(0,0,0,0.06);
            height: var(--bottom-tab-height);
            align-items: center;
            justify-content: space-around;
            padding: 0 var(--space-sm);
        }
        @media (max-width: 768px) {
            .bottom-tab-nav {
                display: flex;
            }
        }
        .bottom-tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            padding: 6px 10px;
            border-radius: var(--radius-md);
            color: var(--color-text-muted);
            font-size: 0.7rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            text-decoration: none;
            min-width: 56px;
        }
        .bottom-tab-item i {
            font-size: 1.25rem;
            transition: color var(--transition-fast);
        }
        .bottom-tab-item:hover {
            color: var(--color-primary);
        }
        .bottom-tab-item.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .bottom-tab-item.active i {
            color: var(--color-primary);
        }

        /* ============ Category Banner ============ */
        .category-banner {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            padding: var(--space-4xl) 0 var(--space-3xl);
            min-height: 380px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26,54,80,0.82) 0%, rgba(15,33,48,0.65) 40%, rgba(26,31,37,0.55) 100%);
            z-index: 1;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--color-bg) 0%, transparent 100%);
            z-index: 2;
        }
        .category-banner-content {
            position: relative;
            z-index: 3;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .category-badge {
            display: inline-block;
            padding: 6px 18px;
            background: rgba(255,255,255,0.18);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255,255,255,0.3);
            color: #ffffff;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: var(--space-lg);
        }
        .category-banner h1 {
            font-size: 2.8rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: var(--space-md);
            letter-spacing: 0.02em;
            text-shadow: 0 2px 8px rgba(0,0,0,0.25);
            line-height: 1.25;
        }
        .category-banner p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.9);
            line-height: 1.7;
            max-width: 560px;
            margin: 0 auto var(--space-lg);
        }
        .category-stats-row {
            display: flex;
            gap: var(--space-xl);
            justify-content: center;
            flex-wrap: wrap;
            margin-top: var(--space-md);
        }
        .category-stat-item {
            text-align: center;
            color: #ffffff;
        }
        .category-stat-number {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1;
            text-shadow: 0 1px 4px rgba(0,0,0,0.2);
        }
        .category-stat-label {
            font-size: 0.8rem;
            opacity: 0.85;
            margin-top: 4px;
            letter-spacing: 0.03em;
        }
        @media (max-width: 768px) {
            .category-banner {
                padding: var(--space-3xl) 0 var(--space-2xl);
                min-height: 300px;
            }
            .category-banner h1 {
                font-size: 2rem;
            }
            .category-banner p {
                font-size: 1rem;
            }
            .category-stats-row {
                gap: var(--space-md);
            }
            .category-stat-number {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .category-banner {
                min-height: 260px;
                padding: var(--space-2xl) 0 var(--space-xl);
            }
            .category-banner h1 {
                font-size: 1.6rem;
            }
            .category-banner p {
                font-size: 0.9rem;
            }
            .category-stat-number {
                font-size: 1.3rem;
            }
        }

        /* ============ Section Spacing ============ */
        .section {
            padding: var(--space-3xl) 0;
        }
        .section--alt {
            background: var(--color-bg-alt);
        }
        .section--dark {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--space-2xl);
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: var(--space-sm);
            letter-spacing: 0.01em;
        }
        .section-header .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 500px;
            margin: 0 auto;
        }
        .section--dark .section-header h2 {
            color: #ffffff;
        }
        .section--dark .section-subtitle {
            color: rgba(255,255,255,0.7);
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--space-2xl) 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
        }

        /* ============ Featured Article Card (Large) ============ */
        .featured-card {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 0;
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
            border: 1px solid var(--color-border-light);
        }
        .featured-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .featured-card-image {
            position: relative;
            min-height: 340px;
            overflow: hidden;
        }
        .featured-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .featured-card:hover .featured-card-image img {
            transform: scale(1.04);
        }
        .featured-card-image .card-tag {
            position: absolute;
            top: var(--space-md);
            left: var(--space-md);
            background: var(--color-accent);
            color: #fff;
            padding: 5px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            z-index: 2;
            box-shadow: 0 2px 6px rgba(0,0,0,0.15);
        }
        .featured-card-body {
            padding: var(--space-xl) var(--space-lg);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-card-body .card-meta {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: var(--space-sm);
            display: flex;
            align-items: center;
            gap: var(--space-sm);
        }
        .featured-card-body h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: var(--space-sm);
            line-height: 1.4;
        }
        .featured-card-body h3 a {
            color: var(--color-text-strong);
            transition: color var(--transition-fast);
        }
        .featured-card-body h3 a:hover {
            color: var(--color-primary);
        }
        .featured-card-body .card-excerpt {
            color: var(--color-text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: var(--space-lg);
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .featured-card-body .card-rating {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            margin-bottom: var(--space-md);
        }
        .card-rating-stars {
            color: var(--color-warning);
            font-size: 0.9rem;
            letter-spacing: 1px;
        }
        .card-rating-score {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-text-strong);
        }
        .card-rating-count {
            font-size: 0.8rem;
            color: var(--color-text-light);
        }
        @media (max-width: 768px) {
            .featured-card {
                grid-template-columns: 1fr;
            }
            .featured-card-image {
                min-height: 220px;
                max-height: 280px;
            }
            .featured-card-body {
                padding: var(--space-lg) var(--space-md);
            }
            .featured-card-body h3 {
                font-size: 1.25rem;
            }
        }
        @media (max-width: 520px) {
            .featured-card-image {
                min-height: 180px;
                max-height: 220px;
            }
            .featured-card-body h3 {
                font-size: 1.1rem;
            }
        }

        /* ============ Article Grid Cards ============ */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-lg);
        }
        .article-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .article-card-image {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--color-bg-alt);
        }
        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .article-card:hover .article-card-image img {
            transform: scale(1.05);
        }
        .article-card-image .card-tag {
            position: absolute;
            top: var(--space-sm);
            left: var(--space-sm);
            background: var(--color-primary);
            color: #fff;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            z-index: 2;
        }
        .article-card-body {
            padding: var(--space-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card-body .card-meta {
            font-size: 0.75rem;
            color: var(--color-text-light);
            letter-spacing: 0.03em;
            margin-bottom: var(--space-xs);
        }
        .article-card-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: var(--space-xs);
            line-height: 1.45;
        }
        .article-card-body h3 a {
            color: var(--color-text-strong);
            transition: color var(--transition-fast);
        }
        .article-card-body h3 a:hover {
            color: var(--color-primary);
        }
        .article-card-body .card-excerpt {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card-footer {
            padding: var(--space-sm) var(--space-md) var(--space-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.78rem;
            color: var(--color-text-light);
        }
        .article-card-footer .read-more {
            font-weight: 600;
            color: var(--color-primary);
            font-size: 0.8rem;
            transition: color var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .article-card-footer .read-more:hover {
            color: var(--color-accent-dark);
        }
        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-md);
            }
        }
        @media (max-width: 600px) {
            .article-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
        }

        /* ============ Quote Block ============ */
        .quote-block {
            background: var(--color-surface);
            border-left: 5px solid var(--color-accent);
            padding: var(--space-lg) var(--space-xl);
            border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
            margin: var(--space-lg) 0;
            box-shadow: var(--shadow-sm);
            font-family: var(--font-serif);
            font-size: 1.1rem;
            line-height: 1.8;
            color: var(--color-text-strong);
            position: relative;
            font-style: italic;
        }
        .quote-block::before {
            content: '"';
            position: absolute;
            top: -10px;
            left: var(--space-md);
            font-size: 4rem;
            color: var(--color-accent-light);
            opacity: 0.4;
            line-height: 1;
            font-family: var(--font-serif);
        }
        .quote-block .quote-author {
            display: block;
            margin-top: var(--space-sm);
            font-style: normal;
            font-family: var(--font-sans);
            font-size: 0.85rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        /* ============ Topic Tags ============ */
        .topic-tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm);
            justify-content: center;
        }
        .topic-tag {
            display: inline-block;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            cursor: pointer;
            border: 1.5px solid var(--color-border);
            background: var(--color-surface);
            color: var(--color-text);
            text-decoration: none;
        }
        .topic-tag:hover {
            border-color: var(--color-accent);
            background: #fdfaf5;
            color: var(--color-accent-dark);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }
        .topic-tag.tag-hot {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            font-weight: 600;
        }
        .topic-tag.tag-new {
            border-color: var(--color-accent);
            color: var(--color-accent-dark);
            font-weight: 600;
            position: relative;
        }
        .topic-tag.tag-new::after {
            content: 'NEW';
            position: absolute;
            top: -8px;
            right: -4px;
            font-size: 0.6rem;
            background: var(--color-danger);
            color: #fff;
            padding: 2px 6px;
            border-radius: 50px;
            font-weight: 700;
            letter-spacing: 0.04em;
        }

        /* ============ CTA Section ============ */
        .cta-section {
            background: linear-gradient(160deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
            padding: var(--space-4xl) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            z-index: 0;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(255,255,255,0.03);
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 2.2rem;
            color: #ffffff;
            margin-bottom: var(--space-md);
            font-weight: 700;
        }
        .cta-content p {
            color: rgba(255,255,255,0.85);
            font-size: 1.05rem;
            margin-bottom: var(--space-xl);
            line-height: 1.7;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
            text-decoration: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--color-accent);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(184,147,90,0.35);
        }
        .btn-primary:hover {
            background: var(--color-accent-light);
            color: #ffffff;
            box-shadow: 0 6px 20px rgba(184,147,90,0.45);
            transform: translateY(-2px);
        }
        .btn-outline-light {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255,255,255,0.5);
        }
        .btn-outline-light:hover {
            background: rgba(255,255,255,0.12);
            border-color: #ffffff;
            color: #ffffff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
        }
        .cta-buttons {
            display: flex;
            gap: var(--space-md);
            justify-content: center;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: var(--space-3xl) 0;
            }
            .cta-content h2 {
                font-size: 1.6rem;
            }
            .cta-content p {
                font-size: 0.95rem;
            }
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            margin-bottom: var(--space-md);
            overflow: hidden;
            transition: box-shadow var(--transition-fast);
            box-shadow: var(--shadow-xs);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: var(--space-lg);
            font-weight: 600;
            font-size: 1.02rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--color-text-strong);
            transition: color var(--transition-fast);
            user-select: none;
            gap: var(--space-md);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: var(--radius-full);
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            transition: all var(--transition-base);
            color: var(--color-text-muted);
        }
        .faq-item.open .faq-question .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            padding: 0 var(--space-lg);
            color: var(--color-text-muted);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 var(--space-lg) var(--space-lg);
        }

        /* ============ Pagination ============ */
        .pagination {
            display: flex;
            justify-content: center;
            gap: var(--space-sm);
            margin-top: var(--space-xl);
            flex-wrap: wrap;
        }
        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            border: 1px solid var(--color-border);
            background: var(--color-surface);
            color: var(--color-text);
        }
        .pagination a:hover {
            background: var(--color-bg-alt);
            border-color: var(--color-accent);
            color: var(--color-accent-dark);
        }
        .pagination span.current {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            font-weight: 600;
            box-shadow: 0 2px 6px rgba(26,54,80,0.2);
        }

        /* ============ Footer ============ */
        .site-footer {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
            padding: var(--space-3xl) 0 var(--space-lg);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: var(--space-xl);
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: var(--space-md);
            color: #ffffff;
        }
        .footer-brand .footer-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 700;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            opacity: 0.7;
            max-width: 280px;
        }
        .footer-col h4 {
            color: #ffffff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: var(--space-md);
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.65);
            font-size: 0.85rem;
            margin-bottom: var(--space-sm);
            transition: color var(--transition-fast);
            text-decoration: none;
        }
        .footer-col a:hover {
            color: var(--color-accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            margin-top: var(--space-xl);
            padding-top: var(--space-lg);
            text-align: center;
            font-size: 0.8rem;
            opacity: 0.55;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-lg);
            }
            .footer-brand {
                grid-column: 1 / -1;
                text-align: center;
            }
            .footer-brand .footer-logo {
                justify-content: center;
            }
            .footer-brand p {
                max-width: 100%;
                margin: 0 auto;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
                text-align: center;
            }
            .footer-col a {
                text-align: center;
            }
        }

        /* ============ Utility ============ */
        .text-center { text-align: center; }
        .mt-lg { margin-top: var(--space-lg); }
        .mt-xl { margin-top: var(--space-xl); }
        .mt-2xl { margin-top: var(--space-2xl); }
        .mb-lg { margin-bottom: var(--space-lg); }
        .mb-xl { margin-bottom: var(--space-xl); }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

        /* ============ Scroll to top ============ */
        .scroll-top-btn {
            position: fixed;
            bottom: 90px;
            right: 24px;
            z-index: 999;
            width: 46px;
            height: 46px;
            border-radius: var(--radius-full);
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lg);
            transition: all var(--transition-base);
            opacity: 0;
            pointer-events: none;
            font-size: 1.1rem;
            cursor: pointer;
        }
        .scroll-top-btn.visible {
            opacity: 1;
            pointer-events: auto;
        }
        .scroll-top-btn:hover {
            background: var(--color-primary-light);
            transform: translateY(-3px);
            box-shadow: var(--shadow-xl);
        }
        @media (max-width: 768px) {
            .scroll-top-btn {
                bottom: 80px;
                right: 16px;
                width: 40px;
                height: 40px;
                font-size: 0.95rem;
            }
        }

        /* ============ Animations ============ */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(24px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-in {
            animation: fadeInUp 0.5s ease forwards;
        }
        .delay-1 { animation-delay: 0.1s; opacity: 0; }
        .delay-2 { animation-delay: 0.2s; opacity: 0; }
        .delay-3 { animation-delay: 0.3s; opacity: 0; }
        .delay-4 { animation-delay: 0.4s; opacity: 0; }