/* roulang page: index */
:root{
  --primary:#3B7EA1;
  --primary-dark:#2F6B8C;
  --primary-light:#EAF2F7;
  --primary-light-2:#D4E5EE;
  --accent:#C9962D;
  --accent-light:#F7F0E3;
  --accent-dark:#A87B1F;
  --bg:#F7F8FA;
  --card:#FFFFFF;
  --text:#1F2A33;
  --text-body:#3F4A54;
  --text-muted:#7A8794;
  --text-disabled:#A6B0BA;
  --border:#E7ECF2;
  --border-light:#EEF2F6;
  --radius:12px;
  --radius-sm:8px;
  --shadow-sm:0 2px 8px rgba(30,50,70,.04);
  --shadow-md:0 8px 24px rgba(30,50,70,.08);
  --shadow-lg:0 16px 40px rgba(30,50,70,.10);
  --transition:.25s ease;
  --sidebar-w:250px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text-body);
  font-size:15px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color var(--transition);}
a:hover{color:var(--primary-dark);}
ul,ol{list-style:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
input{font-family:inherit;}

a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:4px;
}

.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:64px 0;}
.section-header{margin-bottom:40px;}
.section-label{
  display:inline-block;
  background:var(--primary-light);
  color:var(--primary);
  font-size:.82rem;
  font-weight:600;
  padding:4px 14px;
  border-radius:999px;
  margin-bottom:12px;
  letter-spacing:.5px;
}
.section-title{
  font-size:1.5rem;
  font-weight:700;
  color:var(--text);
  line-height:1.4;
  letter-spacing:.5px;
}
.section-desc{
  margin-top:10px;
  color:var(--text-muted);
  font-size:.95rem;
  max-width:560px;
  line-height:1.7;
}

/* ===== 页面骨架 ===== */
.page-shell{display:flex;min-height:100vh;}

/* ===== 左侧导航 ===== */
.sidebar{
  width:var(--sidebar-w);
  flex-shrink:0;
  background:#fff;
  border-right:1px solid var(--border-light);
  position:sticky;
  top:0;
  height:100vh;
  display:flex;
  flex-direction:column;
  padding:28px 0 24px;
  z-index:100;
}
.sidebar-brand{
  padding:0 24px 24px;
  border-bottom:1px solid var(--border-light);
}
.brand-logo{
  font-size:1.35rem;
  font-weight:800;
  color:var(--text);
  letter-spacing:2px;
  display:block;
  line-height:1.3;
}
.brand-sub{
  font-size:.8rem;
  color:var(--text-muted);
  margin-top:4px;
  letter-spacing:1px;
  display:flex;
  align-items:center;
  gap:6px;
}
.brand-sub::before{
  content:'';
  width:18px;height:2px;
  background:var(--accent);
  border-radius:2px;
}
.sidebar-nav{
  padding:16px 12px;
  flex:1;
  overflow-y:auto;
}
.sidebar-nav li{margin-bottom:2px;}
.sidebar-nav a{
  display:flex;
  align-items:center;
  gap:12px;
  padding:11px 14px;
  border-radius:var(--radius-sm);
  color:var(--text-body);
  font-weight:500;
  font-size:.95rem;
  transition:all var(--transition);
  border-left:3px solid transparent;
}
.sidebar-nav a svg{flex-shrink:0;opacity:.65;}
.sidebar-nav a:hover{background:var(--bg);color:var(--primary);}
.sidebar-nav a.active{
  background:var(--primary-light);
  color:var(--primary);
  border-left-color:var(--primary);
  font-weight:600;
}
.sidebar-nav a.active svg{opacity:1;color:var(--primary);}

.sidebar-today{
  margin:8px 16px 16px;
  padding:14px;
  background:var(--bg);
  border:1px solid var(--border-light);
  border-radius:var(--radius);
}
.sidebar-today .today-tag{
  font-size:.75rem;
  color:var(--accent);
  font-weight:600;
  letter-spacing:1px;
  display:block;
  margin-bottom:6px;
}
.sidebar-today p{
  font-size:.85rem;
  color:var(--text-body);
  line-height:1.5;
  margin-bottom:8px;
}
.sidebar-today .today-meta{
  font-size:.75rem;
  color:var(--text-muted);
  display:flex;
  gap:8px;
  align-items:center;
}
.sidebar-bottom{
  padding:0 16px;
  border-top:1px solid var(--border-light);
  padding-top:16px;
}
.btn-block{width:100%;}
.sidebar-copy{
  font-size:.75rem;
  color:var(--text-disabled);
  text-align:center;
  margin-top:14px;
  line-height:1.5;
}

/* ===== 移动端顶栏 ===== */
.mobile-topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:200;
  background:#fff;
  border-bottom:1px solid var(--border-light);
  padding:0 20px;
  height:60px;
  align-items:center;
  justify-content:space-between;
}
.mobile-topbar .brand-logo{font-size:1.15rem;letter-spacing:1px;}
.mobile-topbar .brand-sub{font-size:.7rem;margin-top:0;}
.hamburger-btn{
  width:42px;height:42px;
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--radius-sm);
  border:1px solid var(--border);
  background:#fff;
  color:var(--text);
  transition:all var(--transition);
}
.hamburger-btn:hover{background:var(--bg);border-color:var(--primary);}

.mobile-drawer{
  display:none;
  position:fixed;
  top:60px;
  left:0;
  right:0;
  bottom:0;
  background:#fff;
  z-index:199;
  padding:20px;
  overflow-y:auto;
  transform:translateY(-8px);
  opacity:0;
  pointer-events:none;
  transition:all .25s ease;
  box-shadow:var(--shadow-lg);
}
.mobile-drawer.open{
  transform:translateY(0);
  opacity:1;
  pointer-events:auto;
}
.mobile-drawer .sidebar-nav{padding:0;}
.mobile-drawer .sidebar-nav a{padding:14px 12px;font-size:1rem;border-bottom:1px solid var(--border-light);border-radius:0;}
.mobile-drawer .sidebar-nav a.active{border-left:3px solid var(--primary);background:var(--primary-light);}
.mobile-drawer .sidebar-bottom{border-top:none;padding:20px 0 0;}
.mobile-drawer .sidebar-today{margin:16px 0;}

/* ===== 主内容区 ===== */
.main-content{flex:1;min-width:0;}

/* ===== Hero ===== */
.hero{
  background:var(--primary-light);
  background-image:linear-gradient(100deg, rgba(234,242,247,.97) 30%, rgba(234,242,247,.82) 60%, rgba(234,242,247,.55) 100%), url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  padding:64px 0 56px;
  position:relative;
  border-bottom:1px solid var(--border-light);
}
.hero-inner{max-width:1200px;margin:0 auto;padding:0 24px;}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,.85);
  border:1px solid rgba(59,126,161,.2);
  color:var(--primary);
  font-size:.8rem;
  font-weight:600;
  padding:5px 16px;
  border-radius:999px;
  margin-bottom:18px;
}
.hero h1{
  font-size:2.3rem;
  font-weight:800;
  color:var(--text);
  line-height:1.3;
  letter-spacing:.5px;
  max-width:680px;
  margin-bottom:16px;
}
.hero h1 .accent-txt{color:var(--primary);}
.hero-desc{
  font-size:1rem;
  color:var(--text-body);
  line-height:1.8;
  max-width:600px;
  margin-bottom:28px;
}
.hero-search{
  display:flex;
  gap:12px;
  max-width:520px;
  margin-bottom:20px;
  flex-wrap:wrap;
}
.hero-search input{
  flex:1;
  min-width:220px;
  height:48px;
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  padding:0 18px;
  font-size:.95rem;
  background:#fff;
  color:var(--text);
  transition:border-color var(--transition), box-shadow var(--transition);
}
.hero-search input:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(59,126,161,.12);
}
.hero-search button{
  height:48px;
  padding:0 28px;
  background:var(--primary);
  color:#fff;
  border-radius:var(--radius-sm);
  font-weight:600;
  font-size:.95rem;
  transition:background var(--transition);
}
.hero-search button:hover{background:var(--primary-dark);}
.hero-hot-tags{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}
.hero-hot-tags .tag-label{font-size:.85rem;color:var(--text-muted);}
.hero-hot-tags a{
  background:rgba(255,255,255,.85);
  border:1px solid var(--border);
  color:var(--text-body);
  font-size:.82rem;
  padding:4px 14px;
  border-radius:999px;
  transition:all var(--transition);
}
.hero-hot-tags a:hover{border-color:var(--primary);color:var(--primary);background:#fff;}

.hero-stats{
  display:flex;
  gap:0;
  margin-top:40px;
  border-top:1px solid rgba(59,126,161,.2);
  padding-top:28px;
  flex-wrap:wrap;
}
.stat-item{
  padding:0 32px;
  border-left:1px solid rgba(59,126,161,.18);
  display:flex;
  flex-direction:column;
  gap:2px;
}
.stat-item:first-child{border-left:none;padding-left:0;}
.stat-item .stat-num{
  font-size:1.35rem;
  font-weight:800;
  color:var(--text);
  letter-spacing:1px;
}
.stat-item .stat-label{
  font-size:.78rem;
  color:var(--text-muted);
  letter-spacing:.5px;
}

/* ===== 板块通用 ===== */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;}

/* ===== 板块卡片 ===== */
.board-card{
  background:var(--card);
  border:1px solid var(--border-light);
  border-radius:var(--radius);
  padding:28px 24px;
  box-shadow:var(--shadow-sm);
  transition:box-shadow var(--transition), border-color var(--transition), transform var(--transition);
  display:flex;
  flex-direction:column;
  gap:12px;
}
.board-card:hover{
  box-shadow:var(--shadow-md);
  border-color:rgba(59,126,161,.35);
  transform:translateY(-3px);
}
.board-card .card-icon{
  width:46px;height:46px;
  border-radius:10px;
  background:var(--primary-light);
  display:flex;align-items:center;justify-content:center;
  color:var(--primary);
}
.board-card h3{font-size:1.1rem;font-weight:600;color:var(--text);}
.board-card p{font-size:.88rem;color:var(--text-muted);line-height:1.65;flex:1;}
.board-card .card-foot{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding-top:12px;
  border-top:1px solid var(--border-light);
}
.board-card .topic-count{font-size:.8rem;color:var(--text-disabled);}
.board-card .card-link{
  font-size:.88rem;font-weight:600;color:var(--primary);
  display:inline-flex;align-items:center;gap:4px;
  transition:gap var(--transition);
}
.board-card .card-link:hover{gap:8px;color:var(--primary-dark);}

/* ===== 场景卡片 ===== */
.scene-card{
  background:var(--card);
  border:1px solid var(--border-light);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:box-shadow var(--transition), transform var(--transition);
  display:flex;
  flex-direction:column;
}
.scene-card:hover{
  box-shadow:var(--shadow-md);
  transform:translateY(-3px);
}
.scene-card .scene-img{height:200px;object-fit:cover;width:100%;}
.scene-card .scene-count{
  position:absolute;
  top:16px;left:16px;
  background:rgba(255,255,255,.92);
  color:var(--primary);
  font-size:.78rem;
  font-weight:600;
  padding:3px 12px;
  border-radius:999px;
  backdrop-filter:blur(4px);
}
.scene-body{padding:28px;display:flex;flex-direction:column;gap:12px;flex:1;}
.scene-body h3{font-size:1.15rem;font-weight:700;color:var(--text);line-height:1.45;}
.scene-body p{font-size:.9rem;color:var(--text-muted);line-height:1.75;flex:1;}
.scene-link{
  font-weight:600;font-size:.9rem;color:var(--primary);
  display:inline-flex;align-items:center;gap:4px;
  transition:gap var(--transition);
}
.scene-link:hover{gap:8px;color:var(--primary-dark);}
.scene-img-wrap{position:relative;}

/* ===== 口碑卡 ===== */
.review-card{
  background:var(--card);
  border:1px solid var(--border-light);
  border-radius:var(--radius);
  padding:26px 24px;
  box-shadow:var(--shadow-sm);
  transition:box-shadow var(--transition), transform var(--transition);
  display:flex;
  flex-direction:column;
  gap:14px;
}
.review-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);}
.review-meta{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:.8rem;
  color:var(--text-muted);
}
.review-meta .author{font-weight:600;color:var(--text);}
.review-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-disabled);}
.review-meta .like{
  display:inline-flex;align-items:center;gap:4px;
  color:var(--text-muted);
  margin-left:auto;
}
.review-text{
  font-size:.95rem;
  color:var(--text-body);
  line-height:1.75;
  flex:1;
}
.review-tags{display:flex;gap:8px;flex-wrap:wrap;}

/* ===== 标签 ===== */
.tag{
  display:inline-block;
  padding:3px 12px;
  border-radius:999px;
  font-size:.78rem;
  background:var(--primary-light);
  color:var(--primary);
  font-weight:500;
  transition:all var(--transition);
}
.tag:hover{background:var(--primary);color:#fff;}
.tag-accent{
  background:var(--accent-light);
  color:var(--accent-dark);
}
.tag-accent:hover{background:var(--accent);color:#fff;}

/* ===== 套餐 ===== */
.price-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;align-items:stretch;}
.price-card{
  background:var(--card);
  border:1px solid var(--border-light);
  border-radius:var(--radius);
  padding:32px 28px;
  box-shadow:var(--shadow-sm);
  transition:box-shadow var(--transition), transform var(--transition);
  display:flex;
  flex-direction:column;
  gap:16px;
  position:relative;
}
.price-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);}
.price-card.featured{
  border-top:4px solid var(--primary);
  box-shadow:var(--shadow-md);
  transform:translateY(-6px);
}
.price-card.featured:hover{transform:translateY(-10px);box-shadow:var(--shadow-lg);}
.price-badge{
  position:absolute;
  top:18px;right:18px;
  background:var(--accent);
  color:#fff;
  font-size:.75rem;
  font-weight:600;
  padding:3px 12px;
  border-radius:999px;
}
.price-name{font-size:1.08rem;font-weight:700;color:var(--text);}
.price-amount{
  font-size:2rem;
  font-weight:800;
  color:var(--text);
  line-height:1.2;
}
.price-amount .unit{font-size:.9rem;color:var(--text-muted);font-weight:400;margin-left:4px;}
.price-list{margin-top:4px;flex:1;display:flex;flex-direction:column;gap:12px;}
.price-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:.88rem;color:var(--text-body);
  line-height:1.5;
}
.price-list li svg{flex-shrink:0;margin-top:3px;color:var(--primary);}
.price-card.featured .price-list li svg{color:var(--accent);}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 26px;
  border-radius:var(--radius-sm);
  font-weight:600;
  font-size:.92rem;
  transition:all var(--transition);
  border:1px solid transparent;
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 6px 16px rgba(59,126,161,.25);}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary);}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary-dark);}
.btn-white{background:#fff;color:var(--primary);}
.btn-white:hover{background:var(--primary-light);color:var(--primary-dark);transform:translateY(-2px);box-shadow:0 6px 16px rgba(255,255,255,.3);}
.btn-sm{padding:8px 18px;font-size:.85rem;}

/* ===== FAQ ===== */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{
  background:var(--card);
  border:1px solid var(--border-light);
  border-radius:var(--radius);
  margin-bottom:12px;
  overflow:hidden;
  transition:box-shadow var(--transition), border-color var(--transition);
}
.faq-item:hover{border-color:rgba(59,126,161,.3);box-shadow:var(--shadow-sm);}
.faq-item.open{border-color:var(--primary);box-shadow:var(--shadow-sm);}
.faq-q{
  width:100%;
  padding:20px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:.98rem;
  font-weight:600;
  color:var(--text);
  text-align:left;
  transition:color var(--transition);
}
.faq-q:hover{color:var(--primary);}
.faq-item.open .faq-q{color:var(--primary);}
.faq-icon{
  width:24px;height:24px;
  flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--bg);
  border:1px solid var(--border);
  color:var(--text-muted);
  font-size:1rem;
  transition:all var(--transition);
  font-style:normal;
  font-weight:400;
}
.faq-item.open .faq-icon{
  background:var(--primary);
  border-color:var(--primary);
  color:#fff;
  transform:rotate(45deg);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
  padding:0 24px;
  color:var(--text-body);
  font-size:.92rem;
  line-height:1.8;
}

/* ===== CTA ===== */
.cta-section{padding:20px 0 80px;}
.cta-banner{
  background:var(--primary-light);
  background-image:linear-gradient(100deg, rgba(234,242,247,.95), rgba(234,242,247,.85)), url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-radius:16px;
  padding:56px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  border:1px solid rgba(59,126,161,.15);
  flex-wrap:wrap;
}
.cta-banner h2{font-size:1.5rem;font-weight:700;color:var(--text);line-height:1.4;margin-bottom:8px;}
.cta-banner p{color:var(--text-body);font-size:.95rem;max-width:480px;line-height:1.7;}

/* ===== 页脚 ===== */
.footer{
  background:#fff;
  border-top:1px solid var(--border-light);
  padding:56px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1.2fr 1fr;
  gap:48px;
  margin-bottom:40px;
}
.footer-brand .brand-logo{margin-bottom:8px;}
.footer-brand p{font-size:.86rem;color:var(--text-muted);line-height:1.75;max-width:280px;}
.footer-col h4{
  font-size:.95rem;
  font-weight:600;
  color:var(--text);
  margin-bottom:18px;
  letter-spacing:.5px;
  position:relative;
  padding-bottom:10px;
}
.footer-col h4::after{
  content:'';
  position:absolute;
  bottom:0;left:0;
  width:24px;height:2px;
  background:var(--accent);
  border-radius:2px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{color:var(--text-muted);font-size:.88rem;transition:color var(--transition), padding-left var(--transition);}
.footer-col ul a:hover{color:var(--primary);padding-left:4px;}
.footer-tag-list{display:flex;flex-wrap:wrap;gap:8px;}
.footer-contact li{
  display:flex;align-items:center;gap:10px;
  font-size:.86rem;color:var(--text-muted);
  margin-bottom:10px;
}
.footer-contact li svg{color:var(--primary);flex-shrink:0;}
.footer-bottom{
  border-top:1px solid var(--border-light);
  padding-top:20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:.8rem;
  color:var(--text-disabled);
}

/* ===== 响应式 ===== */
@media (max-width:1180px){
  .grid-4{grid-template-columns:repeat(2,1fr);gap:20px;}
  .price-cards{grid-template-columns:repeat(3,1fr);gap:20px;}
}
@media (max-width:992px){
  .sidebar{display:none;}
  .mobile-topbar{display:flex;}
  .page-shell{flex-direction:column;}
  .main-content{width:100%;}
  .hero{padding:48px 0 40px;}
  .hero h1{font-size:1.85rem;}
  .section{padding:48px 0;}
  .grid-3,.price-cards{grid-template-columns:repeat(2,1fr);gap:20px;}
  .grid-2{grid-template-columns:1fr;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-banner{padding:40px 28px;flex-direction:column;align-items:flex-start;}
}
@media (max-width:768px){
  .grid-4{grid-template-columns:1fr;}
  .grid-3{grid-template-columns:1fr;}
  .price-cards{grid-template-columns:1fr;max-width:420px;margin:0 auto;}
  .price-card.featured{transform:none;}
  .price-card.featured:hover{transform:translateY(-4px);}
  .hero-stats{gap:20px;}
  .stat-item{padding:0 20px;}
  .hero-search{flex-direction:column;}
  .hero-search button{width:100%;}
  .section-title{font-size:1.3rem;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{justify-content:center;text-align:center;}
}
@media (max-width:480px){
  .hero h1{font-size:1.5rem;}
  .hero-desc{font-size:.9rem;}
  .stat-item{padding:0 14px;}
  .stat-item .stat-num{font-size:1.1rem;}
  .stat-item .stat-label{font-size:.7rem;}
  .section{padding:40px 0;}
  .container{padding:0 16px;}
  .cta-banner{padding:32px 20px;}
  .cta-banner h2{font-size:1.2rem;}
  .btn{width:100%;}
}