/* roulang page: index */
:root{
  --primary:#1e3a5f;
  --primary-light:#2b4b7a;
  --primary-dark:#14273f;
  --accent:#f5c518;
  --accent-dark:#d4a800;
  --coral:#ff6b4a;
  --bg-page:#f4f6fb;
  --bg-white:#ffffff;
  --bg-dark:#0d1b2a;
  --bg-dark-light:#16263a;
  --text-main:#1a2233;
  --text-body:#3d4c5e;
  --text-weak:#7b8a9a;
  --border:#e3e8f0;
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:22px;
  --radius-xl:32px;
  --shadow-sm:0 2px 10px rgba(30,58,95,.06);
  --shadow-md:0 8px 28px rgba(30,58,95,.09);
  --shadow-lg:0 18px 44px rgba(30,58,95,.14);
  --shadow-accent:0 10px 26px rgba(245,197,24,.30);
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
  --space-section:clamp(56px,8vw,96px);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:var(--font-sans);
  background:var(--bg-page);
  color:var(--text-main);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--accent-dark)}
img{max-width:100%;height:auto;display:block;border:0}
button{font-family:var(--font-sans);cursor:pointer;border:0;background:none}
input,select,textarea{font-family:var(--font-sans);font-size:1rem}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--space-section) 0}
.section-dark{background:var(--bg-dark);color:#e8edf4}
.section-muted{background:#eef1f7}

/* 导航 */
.site-header{
  position:sticky;
  top:14px;
  z-index:999;
  padding:0 20px;
  pointer-events:none;
}
.nav-dock{
  pointer-events:auto;
  max-width:1160px;
  margin:0 auto;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(16px) saturate(160%);
  -webkit-backdrop-filter:blur(16px) saturate(160%);
  border:1px solid rgba(255,255,255,.65);
  box-shadow:var(--shadow-md);
  border-radius:var(--radius-xl);
  display:flex;
  align-items:center;
  gap:18px;
  padding:12px 22px;
  transition:box-shadow .3s ease,transform .3s ease;
}
.nav-dock:hover{box-shadow:var(--shadow-lg)}
.brand{
  font-size:1.35rem;
  font-weight:800;
  color:var(--primary);
  letter-spacing:1px;
  white-space:nowrap;
  display:flex;
  flex-direction:column;
  line-height:1.2;
}
.brand small{
  font-size:.62rem;
  font-weight:600;
  color:var(--text-weak);
  letter-spacing:2.5px;
  text-transform:uppercase;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  flex:1;
  justify-content:center;
}
.nav-link{
  padding:8px 16px;
  border-radius:999px;
  font-size:.86rem;
  font-weight:600;
  color:var(--text-body);
  white-space:nowrap;
  transition:background .25s,color .25s,transform .2s;
}
.nav-link:hover{
  background:rgba(30,58,95,.06);
  color:var(--primary);
}
.nav-link.active{
  background:var(--primary);
  color:#fff;
  box-shadow:0 4px 14px rgba(30,58,95,.22);
}
.nav-cta{
  padding:9px 20px;
  border-radius:999px;
  background:var(--accent);
  color:var(--primary-dark);
  font-weight:700;
  font-size:.84rem;
  box-shadow:var(--shadow-accent);
  transition:transform .25s,box-shadow .25s;
  white-space:nowrap;
}
.nav-cta:hover{
  transform:translateY(-2px) scale(1.02);
  background:var(--accent-dark);
  color:var(--primary-dark);
  box-shadow:0 12px 30px rgba(245,197,24,.4);
}
.nav-toggle{
  display:none;
  width:40px;
  height:40px;
  border-radius:50%;
  background:rgba(30,58,95,.06);
  color:var(--primary);
  font-size:1.1rem;
  align-items:center;
  justify-content:center;
}
.nav-toggle:hover{background:rgba(30,58,95,.12)}

/* Hero */
.hero{
  position:relative;
  min-height:88vh;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:120px 24px 100px;
  margin-top:-86px;
  background:
    linear-gradient(132deg,rgba(13,27,42,.86) 0%,rgba(30,58,95,.72) 52%,rgba(13,27,42,.88) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow:hidden;
}
.hero::after{
  content:'';
  position:absolute;
  bottom:0;left:0;right:0;height:120px;
  background:linear-gradient(to top,var(--bg-page),transparent);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:2;
  max-width:860px;
  margin:0 auto;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(245,197,24,.16);
  border:1px solid rgba(245,197,24,.35);
  color:var(--accent);
  font-size:.78rem;
  font-weight:700;
  letter-spacing:1px;
  padding:8px 18px;
  border-radius:999px;
  margin-bottom:24px;
  backdrop-filter:blur(6px);
}
.hero h1{
  font-size:clamp(2.2rem,5vw,3.6rem);
  font-weight:800;
  line-height:1.22;
  color:#fff;
  margin-bottom:18px;
  letter-spacing:1px;
  text-shadow:0 4px 24px rgba(0,0,0,.2);
}
.hero h1 em{
  color:var(--accent);
  font-style:normal;
}
.hero p{
  font-size:clamp(.98rem,1.6vw,1.18rem);
  color:rgba(255,255,255,.86);
  max-width:680px;
  margin:0 auto 34px;
  line-height:1.85;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:center;
}
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:13px 30px;
  border-radius:999px;
  font-size:.92rem;
  font-weight:700;
  transition:transform .25s,box-shadow .25s,background .25s;
  line-height:1;
}
.btn-accent{
  background:var(--accent);
  color:var(--primary-dark);
  box-shadow:var(--shadow-accent);
}
.btn-accent:hover{
  transform:translateY(-2px);
  background:var(--accent-dark);
  color:var(--primary-dark);
  box-shadow:0 14px 34px rgba(245,197,24,.42);
}
.btn-ghost{
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.25);
  color:#fff;
  backdrop-filter:blur(8px);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.2);
  color:#fff;
  transform:translateY(-2px);
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:30px;
  margin-top:58px;
  padding-top:28px;
  border-top:1px solid rgba(255,255,255,.16);
}
.hero-stat{
  text-align:center;
  color:#fff;
}
.hero-stat strong{
  display:block;
  font-size:1.8rem;
  font-weight:800;
  color:var(--accent);
  line-height:1.2;
}
.hero-stat span{
  font-size:.78rem;
  color:rgba(255,255,255,.65);
  letter-spacing:1px;
}

/* 更新条 */
.ticker-bar{
  background:var(--bg-white);
  border-bottom:1px solid var(--border);
  padding:12px 0;
}
.ticker-row{
  display:flex;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
}
.ticker-label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--accent);
  color:var(--primary-dark);
  font-size:.74rem;
  font-weight:800;
  padding:6px 14px;
  border-radius:999px;
  white-space:nowrap;
}
.ticker-list{
  flex:1;
  min-width:220px;
  overflow:hidden;
  white-space:nowrap;
  text-overflow:ellipsis;
  font-size:.9rem;
  color:var(--text-body);
}
.ticker-list a{
  font-weight:600;
  color:var(--primary);
}
.ticker-list a:hover{color:var(--accent-dark)}

/* 板块头 */
.section-head{
  text-align:center;
  max-width:640px;
  margin:0 auto 46px;
}
.section-tag{
  display:inline-block;
  background:rgba(30,58,95,.08);
  color:var(--primary);
  font-size:.74rem;
  font-weight:800;
  letter-spacing:2px;
  padding:7px 16px;
  border-radius:999px;
  margin-bottom:14px;
}
.section-head h2{
  font-size:clamp(1.7rem,3.4vw,2.4rem);
  font-weight:800;
  color:var(--text-main);
  line-height:1.3;
  margin-bottom:12px;
}
.section-head p{
  color:var(--text-weak);
  font-size:.96rem;
  line-height:1.8;
}
.section-dark .section-head h2{color:#fff}
.section-dark .section-head p{color:rgba(255,255,255,.7)}
.section-dark .section-tag{background:rgba(245,197,24,.15);color:var(--accent)}

/* 核心优势 */
.features-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.feature-card{
  background:var(--bg-white);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:34px 24px;
  box-shadow:var(--shadow-sm);
  transition:transform .3s,box-shadow .3s,border-color .3s;
  position:relative;
  overflow:hidden;
}
.feature-card::before{
  content:'';
  position:absolute;
  top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--accent),var(--coral));
  opacity:0;
  transition:opacity .3s;
}
.feature-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-md);
  border-color:rgba(30,58,95,.15);
}
.feature-card:hover::before{opacity:1}
.feature-icon{
  width:56px;height:56px;
  border-radius:16px;
  background:rgba(30,58,95,.08);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:1.4rem;
  margin-bottom:18px;
  transition:background .3s,transform .3s;
}
.feature-card:hover .feature-icon{
  background:var(--primary);
  color:#fff;
  transform:rotate(-4deg) scale(1.05);
}
.feature-card h3{
  font-size:1.08rem;
  font-weight:700;
  margin-bottom:10px;
  color:var(--text-main);
}
.feature-card p{
  font-size:.86rem;
  color:var(--text-weak);
  line-height:1.75;
}

/* 分类入口 */
.cat-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.category-card{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  min-height:300px;
  display:flex;
  align-items:flex-end;
  background-size:cover;
  background-position:center;
  color:#fff;
  box-shadow:var(--shadow-md);
  transition:transform .35s,box-shadow .35s;
  isolation:isolate;
}
.category-card::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(13,27,42,.92) 0%,rgba(30,58,95,.55) 50%,rgba(13,27,42,.25) 100%);
  z-index:-1;
  transition:background .35s;
}
.category-card:hover{
  transform:translateY(-8px);
  box-shadow:var(--shadow-lg);
}
.category-card:hover::before{
  background:linear-gradient(to top,rgba(13,27,42,.95) 0%,rgba(30,58,95,.7) 55%,rgba(13,27,42,.35) 100%);
}
.category-card-body{
  padding:28px;
  width:100%;
}
.category-card-body h3{
  font-size:1.35rem;
  font-weight:800;
  margin-bottom:8px;
  display:flex;
  align-items:center;
  gap:10px;
}
.category-card-body h3 i{
  color:var(--accent);
  font-size:1rem;
  opacity:0;
  transform:translateX(-8px);
  transition:opacity .3s,transform .3s;
}
.category-card:hover h3 i{
  opacity:1;
  transform:translateX(0);
}
.category-card-body p{
  font-size:.86rem;
  color:rgba(255,255,255,.82);
  line-height:1.75;
  margin-bottom:12px;
}
.category-meta{
  display:flex;
  align-items:center;
  gap:14px;
  font-size:.76rem;
  color:rgba(255,255,255,.6);
}
.category-meta span i{margin-right:5px;color:var(--accent)}

/* 资讯列表 */
.news-section{
  background:var(--bg-white);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.news-layout{
  display:grid;
  grid-template-columns:1fr 1.4fr;
  gap:48px;
  align-items:start;
}
.news-intro .section-head{
  text-align:left;
  margin:0 0 28px;
}
.news-intro .section-head .section-tag{margin-bottom:12px}
.news-intro .section-head h2{margin-bottom:10px}
.news-intro p{
  color:var(--text-weak);
  font-size:.9rem;
  margin-bottom:28px;
  line-height:1.8;
}
.news-intro .btn{
  font-size:.85rem;
}
.news-list{
  display:flex;
  flex-direction:column;
  gap:0;
  border-top:1px solid var(--border);
}
.news-item{
  display:flex;
  gap:18px;
  padding:18px 0;
  border-bottom:1px solid var(--border);
  transition:background .3s;
  align-items:flex-start;
}
.news-item:hover{
  padding-left:10px;
  background:linear-gradient(90deg,rgba(30,58,95,.04),transparent);
}
.news-num{
  flex-shrink:0;
  width:36px;height:36px;
  border-radius:10px;
  background:var(--bg-page);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;
  font-size:.82rem;
  color:var(--text-weak);
  margin-top:2px;
}
.news-item:nth-child(-n+3) .news-num{
  background:var(--accent);
  color:var(--primary-dark);
}
.news-body{
  flex:1;
  min-width:0;
}
.news-body time{
  font-size:.74rem;
  color:var(--text-weak);
  display:block;
  margin-bottom:4px;
  letter-spacing:.4px;
}
.news-body h3{
  font-size:.98rem;
  font-weight:700;
  margin-bottom:4px;
  line-height:1.5;
}
.news-body h3 a{
  color:var(--text-main);
}
.news-body h3 a:hover{
  color:var(--primary);
}
.news-body p{
  font-size:.84rem;
  color:var(--text-weak);
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:6px;
}
.news-body .news-more{
  font-size:.78rem;
  font-weight:700;
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  gap:4px;
}
.news-body .news-more i{transition:transform .25s}
.news-body .news-more:hover i{transform:translateX(4px)}
.no-data{
  padding:40px 0;
  text-align:center;
  color:var(--text-weak);
  font-size:.9rem;
  border-bottom:1px solid var(--border);
}

/* 数据+流程 */
.stats-process{
  background:
    radial-gradient(ellipse at 20% 20%,rgba(245,197,24,.08),transparent 50%),
    var(--bg-dark);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.stats-process::before{
  content:'';
  position:absolute;
  top:-80px;right:-80px;
  width:260px;height:260px;
  border-radius:50%;
  background:rgba(245,197,24,.05);
  pointer-events:none;
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-bottom:60px;
}
.stat-block{
  text-align:center;
  padding:30px 16px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius-lg);
  transition:background .3s,transform .3s;
}
.stat-block:hover{
  background:rgba(255,255,255,.08);
  transform:translateY(-4px);
}
.stat-block strong{
  display:block;
  font-size:2.2rem;
  font-weight:800;
  color:var(--accent);
  line-height:1.2;
}
.stat-block span{
  font-size:.8rem;
  color:rgba(255,255,255,.6);
  letter-spacing:1px;
  margin-top:6px;
  display:block;
}
.process-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  counter-reset:step;
}
.process-step{
  position:relative;
  padding:30px 24px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius-lg);
  counter-increment:step;
  transition:transform .3s,background .3s;
}
.process-step:hover{
  transform:translateY(-5px);
  background:rgba(255,255,255,.08);
}
.process-step::after{
  content:'0' counter(step);
  position:absolute;
  top:20px;right:24px;
  font-size:2.4rem;
  font-weight:800;
  color:rgba(245,197,24,.14);
  line-height:1;
}
.process-step h3{
  font-size:1rem;
  font-weight:700;
  margin-bottom:10px;
  color:#fff;
}
.process-step p{
  font-size:.84rem;
  color:rgba(255,255,255,.65);
  line-height:1.75;
}

/* 精选内容 */
.featured-grid{
  display:grid;
  grid-template-columns:1.2fr 1fr;
  gap:28px;
}
.featured-card{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  min-height:380px;
  display:flex;
  align-items:flex-end;
  background-size:cover;
  background-position:center;
  color:#fff;
  box-shadow:var(--shadow-md);
  transition:transform .35s,box-shadow .35s;
  isolation:isolate;
}
.featured-card::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(13,27,42,.88),rgba(13,27,42,.35) 60%,transparent);
  z-index:-1;
}
.featured-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
}
.featured-card-body{
  padding:30px;
}
.featured-card-body .badge{
  background:var(--accent);
  color:var(--primary-dark);
  font-size:.72rem;
  font-weight:800;
  padding:5px 14px;
  border-radius:999px;
  display:inline-block;
  margin-bottom:12px;
}
.featured-card-body h3{
  font-size:1.4rem;
  font-weight:800;
  margin-bottom:8px;
  line-height:1.4;
}
.featured-card-body p{
  font-size:.86rem;
  color:rgba(255,255,255,.82);
  line-height:1.75;
  margin-bottom:16px;
}
.featured-card-body .btn{
  font-size:.82rem;
  padding:10px 20px;
}
.fcard-2{
  min-height:300px;
}
.featured-small-list{
  display:flex;
  flex-direction:column;
  gap:18px;
}
.featured-small{
  background:var(--bg-white);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:20px;
  display:flex;
  gap:16px;
  align-items:center;
  transition:box-shadow .3s,transform .3s,border-color .3s;
}
.featured-small:hover{
  box-shadow:var(--shadow-md);
  transform:translateX(-4px);
  border-color:rgba(30,58,95,.18);
}
.featured-small img{
  width:76px;height:76px;
  border-radius:12px;
  object-fit:cover;
  flex-shrink:0;
}
.featured-small h4{
  font-size:.92rem;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:5px;
}
.featured-small p{
  font-size:.78rem;
  color:var(--text-weak);
  line-height:1.6;
}

/* FAQ */
.faq-wrap{
  max-width:800px;
  margin:0 auto;
}
.faq-item{
  background:var(--bg-white);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  margin-bottom:14px;
  overflow:hidden;
  transition:box-shadow .3s,border-color .3s;
}
.faq-item:hover{
  border-color:rgba(30,58,95,.2);
  box-shadow:var(--shadow-sm);
}
.faq-item.active{
  border-color:rgba(30,58,95,.3);
  box-shadow:var(--shadow-md);
}
.faq-q{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  padding:20px 24px;
  cursor:pointer;
  font-size:.96rem;
  font-weight:700;
  color:var(--text-main);
  transition:color .25s;
}
.faq-q i{
  color:var(--accent-dark);
  transition:transform .35s;
  font-size:.9rem;
  flex-shrink:0;
}
.faq-item.active .faq-q i{
  transform:rotate(45deg);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  padding:0 24px;
  color:var(--text-weak);
  font-size:.88rem;
  line-height:1.8;
  transition:max-height .4s ease,padding .4s ease;
}
.faq-item.active .faq-a{
  max-height:300px;
  padding-bottom:22px;
}

/* CTA */
.cta-section{
  position:relative;
  text-align:center;
  background:
    linear-gradient(115deg,rgba(30,58,95,.95),rgba(13,27,42,.88)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;
  border-radius:var(--radius-xl);
  margin:0 24px;
  padding:70px 40px;
  box-shadow:var(--shadow-lg);
  overflow:hidden;
}
.cta-section::before{
  content:'';
  position:absolute;
  top:-60px;right:-40px;
  width:220px;height:220px;
  border-radius:50%;
  background:rgba(245,197,24,.14);
}
.cta-section::after{
  content:'';
  position:absolute;
  bottom:-60px;left:-40px;
  width:180px;height:180px;
  border-radius:50%;
  background:rgba(255,107,74,.1);
}
.cta-section h2{
  font-size:clamp(1.7rem,3.5vw,2.4rem);
  font-weight:800;
  margin-bottom:14px;
  position:relative;
  z-index:1;
}
.cta-section p{
  font-size:.96rem;
  color:rgba(255,255,255,.8);
  max-width:540px;
  margin:0 auto 30px;
  position:relative;
  z-index:1;
}
.cta-section .btn{
  position:relative;
  z-index:1;
  margin:0 6px;
}

/* 页脚 */
.site-footer{
  background:var(--bg-dark);
  color:rgba(255,255,255,.7);
  padding:70px 0 30px;
  margin-top:80px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  margin-bottom:50px;
}
.footer-brand{
  font-size:1.4rem;
  font-weight:800;
  color:#fff;
  margin-bottom:8px;
  display:block;
}
.footer-brand small{
  font-size:.66rem;
  font-weight:600;
  letter-spacing:2px;
  color:var(--accent);
  text-transform:uppercase;
  display:block;
  margin-top:4px;
}
.footer-about{
  font-size:.84rem;
  line-height:1.8;
  color:rgba(255,255,255,.55);
  margin-top:12px;
}
.footer-title{
  font-size:.9rem;
  font-weight:700;
  color:#fff;
  margin-bottom:18px;
  letter-spacing:1px;
}
.footer-links{
  list-style:none;
}
.footer-links li{
  margin-bottom:10px;
}
.footer-links a{
  color:rgba(255,255,255,.6);
  font-size:.84rem;
  transition:color .25s,padding-left .25s;
}
.footer-links a:hover{
  color:var(--accent);
  padding-left:5px;
}
.footer-contact li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  margin-bottom:12px;
  font-size:.84rem;
  color:rgba(255,255,255,.6);
}
.footer-contact li i{
  color:var(--accent);
  margin-top:4px;
  width:16px;
  text-align:center;
  flex-shrink:0;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding-top:24px;
  text-align:center;
  font-size:.78rem;
  color:rgba(255,255,255,.4);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--accent)}

/* 返回顶部 */
.back-top{
  position:fixed;
  bottom:36px;
  right:36px;
  width:46px;height:46px;
  border-radius:50%;
  background:var(--primary);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.1rem;
  box-shadow:var(--shadow-md);
  z-index:99;
  transition:transform .3s,background .3s,opacity .3s;
  opacity:0;
  visibility:hidden;
}
.back-top.visible{
  opacity:1;
  visibility:visible;
}
.back-top:hover{
  background:var(--accent-dark);
  transform:translateY(-4px);
}

/* 响应式 */
@media (max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid,.process-grid{grid-template-columns:repeat(2,1fr)}
  .news-layout{grid-template-columns:1fr}
  .news-intro{text-align:center}
  .news-intro .section-head{text-align:center}
  .featured-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .site-header{
    top:10px;
    padding:0 14px;
  }
  .nav-dock{
    padding:10px 16px;
    gap:10px;
    flex-wrap:wrap;
  }
  .main-nav{
    display:none;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:12px 0 6px;
    order:3;
  }
  .main-nav.open{
    display:flex;
  }
  .nav-link{
    text-align:center;
    padding:10px;
  }
  .nav-toggle{
    display:flex;
    margin-left:auto;
  }
  .nav-cta{
    padding:8px 16px;
    font-size:.78rem;
  }
  .hero{
    margin-top:-76px;
    padding:110px 20px 90px;
    min-height:auto;
  }
  .hero-stats{
    gap:16px;
    flex-direction:column;
    margin-top:40px;
  }
  .ticker-row{
    gap:10px;
  }
  .cat-grid{
    grid-template-columns:1fr;
  }
  .category-card{
    min-height:240px;
  }
  .stats-grid,.process-grid{
    grid-template-columns:1fr 1fr;
    gap:16px;
  }
  .stat-block{
    padding:22px 14px;
  }
  .stat-block strong{
    font-size:1.6rem;
  }
  .cta-section{
    margin:0 14px;
    padding:50px 24px;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:30px;
  }
  .back-top{
    right:20px;
    bottom:24px;
    width:40px;height:40px;
  }
}
@media (max-width:520px){
  .brand{
    font-size:1.1rem;
  }
  .nav-cta{
    display:none;
  }
  .features-grid{
    grid-template-columns:1fr;
  }
  .news-item{
    flex-direction:row;
    gap:12px;
  }
  .news-num{
    width:30px;height:30px;
    font-size:.74rem;
  }
  .process-grid{
    grid-template-columns:1fr;
  }
  .stats-grid{
    grid-template-columns:1fr 1fr;
  }
  .featured-card{
    min-height:300px;
  }
  .featured-card-body h3{
    font-size:1.15rem;
  }
  .featured-small{
    flex-direction:column;
    align-items:flex-start;
  }
  .hero h1{
    font-size:1.85rem;
  }
  .hero p{
    font-size:.9rem;
  }
  .btn{
    width:100%;
    justify-content:center;
  }
  .hero-actions .btn{
    width:auto;
  }
}

/* roulang page: category1 */
:root {
            --primary: #2b3a8c;
            --primary-deep: #1e2a66;
            --primary-light: #5b6bc9;
            --accent: #f5a623;
            --accent-light: #ffe8c8;
            --bg: #f0f3fa;
            --white: #ffffff;
            --text: #26304d;
            --text-weak: #6b7594;
            --border: #e3e8f4;
            --radius: 16px;
            --radius-sm: 12px;
            --shadow: 0 10px 30px rgba(35, 48, 94, 0.08);
            --shadow-hover: 0 18px 40px rgba(35, 48, 94, 0.14);
            --space-section: 90px;
            --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font);
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
            border-radius: var(--radius);
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease, background .2s ease, box-shadow .2s ease, transform .2s ease;
        }
        ul,
        ol {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 14px;
            z-index: 100;
            padding: 0 16px;
        }
        .nav-dock {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1180px;
            margin: 0 auto;
            padding: 12px 20px;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, .7);
            border-radius: 20px;
            box-shadow: 0 10px 35px rgba(30, 42, 90, .10);
            transition: box-shadow .3s ease;
        }
        .brand {
            display: flex;
            align-items: baseline;
            gap: 8px;
            font-weight: 800;
            font-size: 1.28rem;
            color: var(--primary-deep);
            letter-spacing: .01em;
            white-space: nowrap;
        }
        .brand small {
            font-size: .72rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: .14em;
            background: var(--accent-light);
            padding: 2px 8px;
            border-radius: 6px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .main-nav .nav-link {
            padding: 8px 18px;
            border-radius: 12px;
            font-size: .95rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
        }
        .main-nav .nav-link:hover {
            background: var(--bg);
            color: var(--primary);
        }
        .main-nav .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(43, 58, 140, .28);
        }
        .nav-cta {
            padding: 9px 20px;
            background: var(--accent);
            color: #1e2a66;
            border-radius: 12px;
            font-weight: 700;
            font-size: .9rem;
            box-shadow: 0 6px 16px rgba(245, 166, 35, .35);
            white-space: nowrap;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 22px rgba(245, 166, 35, .45);
            color: #1e2a66;
        }
        .nav-toggle {
            display: none;
            border: 0;
            background: var(--bg);
            color: var(--primary-deep);
            width: 42px;
            height: 42px;
            border-radius: 12px;
            font-size: 1.1rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: background .2s;
        }
        .nav-toggle:hover {
            background: var(--accent-light);
        }

        /* ===== 内页 Hero ===== */
        .page-hero {
            position: relative;
            padding: 96px 0 88px;
            text-align: center;
            color: #fff;
            background: linear-gradient(135deg, rgba(23, 30, 58, .94), rgba(43, 58, 140, .80)), url('/assets/images/backpic/back-2.png') center/cover;
            overflow: hidden;
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .25);
            backdrop-filter: blur(8px);
            padding: 7px 18px;
            border-radius: 999px;
            font-size: .85rem;
            font-weight: 600;
            letter-spacing: .08em;
            color: #f4f6ff;
            margin-bottom: 24px;
        }
        .page-hero h1 {
            font-size: clamp(2rem, 4.4vw, 3.1rem);
            font-weight: 800;
            line-height: 1.25;
            margin: 0 0 16px;
            letter-spacing: .01em;
        }
        .page-hero .hero-sub {
            max-width: 680px;
            margin: 0 auto 30px;
            font-size: 1.08rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, .88);
        }
        .hero-breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: .88rem;
            color: rgba(255, 255, 255, .72);
            background: rgba(255, 255, 255, .08);
            padding: 6px 16px;
            border-radius: 999px;
        }
        .hero-breadcrumb a {
            color: rgba(255, 255, 255, .9);
            font-weight: 500;
        }
        .hero-breadcrumb a:hover {
            color: var(--accent);
        }
        .hero-breadcrumb i {
            font-size: .7rem;
            opacity: .7;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--space-section) 0;
        }
        .section-alt {
            background: var(--white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-head {
            max-width: 720px;
            margin: 0 auto 52px;
            text-align: center;
        }
        .section-tag {
            display: inline-block;
            font-size: .8rem;
            font-weight: 700;
            letter-spacing: .14em;
            color: var(--primary);
            background: rgba(43, 58, 140, .08);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            line-height: 1.35;
            color: var(--primary-deep);
            margin: 0 0 12px;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-weak);
            line-height: 1.8;
            margin: 0;
        }

        /* ===== 图文介绍 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1.02fr .98fr;
            gap: 56px;
            align-items: center;
        }
        .intro-media {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
        }
        .intro-media img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: var(--radius);
        }
        .intro-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(43, 58, 140, .10), transparent 60%);
            border-radius: var(--radius);
        }
        .intro-content .content-tag {
            color: var(--accent);
            font-weight: 700;
            font-size: .8rem;
            letter-spacing: .12em;
            margin-bottom: 8px;
            display: block;
        }
        .intro-content h2 {
            font-size: 1.65rem;
            font-weight: 800;
            line-height: 1.4;
            color: var(--primary-deep);
            margin: 0 0 16px;
        }
        .intro-content p {
            color: var(--text-weak);
            line-height: 1.85;
            margin: 0 0 24px;
            font-size: 1rem;
        }
        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 28px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: .97rem;
            color: var(--text);
        }
        .feature-list li i {
            color: var(--accent);
            margin-top: 4px;
            flex-shrink: 0;
        }
        .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 12px;
            font-weight: 700;
            font-size: .95rem;
            border: 0;
            cursor: pointer;
            transition: all .25s ease;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 20px rgba(43, 58, 140, .25);
        }
        .btn-primary:hover {
            background: var(--primary-deep);
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(43, 58, 140, .32);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }
        .guide-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s;
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(43, 58, 140, .2);
        }
        .guide-card .card-media {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .guide-card .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .guide-card:hover .card-media img {
            transform: scale(1.06);
        }
        .guide-card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-tag {
            align-self: flex-start;
            font-size: .75rem;
            font-weight: 700;
            color: var(--primary);
            background: rgba(43, 58, 140, .08);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
        }
        .guide-card h3 {
            font-size: 1.08rem;
            font-weight: 800;
            line-height: 1.5;
            color: var(--primary-deep);
            margin: 0 0 10px;
        }
        .guide-card p {
            font-size: .92rem;
            line-height: 1.75;
            color: var(--text-weak);
            margin: 0 0 18px;
            flex: 1;
        }
        .guide-card .card-link {
            font-size: .9rem;
            font-weight: 700;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .guide-card .card-link i {
            transition: transform .2s;
        }
        .guide-card .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 流程 ===== */
        .steps-wrap {
            background: linear-gradient(135deg, var(--primary-deep), var(--primary));
            border-radius: 28px;
            padding: 56px 48px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .steps-wrap::before {
            content: '';
            position: absolute;
            right: -80px;
            top: -80px;
            width: 260px;
            height: 260px;
            background: rgba(255, 255, 255, .06);
            border-radius: 50%;
        }
        .steps-wrap .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
            z-index: 2;
        }
        .step-item {
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .14);
            backdrop-filter: blur(6px);
            border-radius: 18px;
            padding: 26px 22px;
            text-align: center;
            transition: background .3s ease, transform .3s ease;
        }
        .step-item:hover {
            background: rgba(255, 255, 255, .14);
            transform: translateY(-4px);
        }
        .step-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            margin: 0 auto 14px;
            background: var(--accent);
            color: #1e2a66;
            border-radius: 12px;
            font-weight: 800;
            font-size: 1.05rem;
            box-shadow: 0 6px 14px rgba(245, 166, 35, .4);
        }
        .step-item h3 {
            font-size: .98rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: #fff;
        }
        .step-item p {
            font-size: .84rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, .75);
            margin: 0;
        }

        /* ===== 文章列表 ===== */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .article-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px 28px;
            display: flex;
            align-items: flex-start;
            gap: 20px;
            transition: box-shadow .3s ease, transform .3s ease, border-color .3s;
        }
        .article-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(43, 58, 140, .18);
        }
        .article-item .article-info {
            flex: 1;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .article-tag {
            font-size: .74rem;
            font-weight: 700;
            color: var(--accent);
            background: var(--accent-light);
            padding: 3px 12px;
            border-radius: 999px;
            letter-spacing: .04em;
        }
        .article-date {
            font-size: .8rem;
            color: var(--text-weak);
        }
        .article-item h3 {
            font-size: 1.04rem;
            font-weight: 800;
            color: var(--primary-deep);
            margin: 0 0 8px;
            line-height: 1.5;
        }
        .article-item p {
            font-size: .92rem;
            line-height: 1.75;
            color: var(--text-weak);
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-list.accordion {
            background: transparent;
            border: 0;
            margin: 0;
        }
        .accordion-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: box-shadow .3s ease;
        }
        .accordion-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .accordion-item .accordion-title {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary-deep);
            background: transparent;
            border: 0;
            line-height: 1.5;
        }
        .accordion-item .accordion-title::before {
            content: "\f059";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--accent);
            font-size: 1.05rem;
            flex-shrink: 0;
        }
        .accordion-item .accordion-title::after {
            content: "\f107";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--text-weak);
            transition: transform .3s ease;
            margin-left: auto;
        }
        .accordion-item.is-active .accordion-title::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .accordion-item .accordion-title:hover,
        .accordion-item .accordion-title:focus {
            background: rgba(43, 58, 140, .03);
            color: var(--primary);
        }
        .accordion-item .accordion-content {
            padding: 0 24px 22px;
            border: 0;
            background: transparent;
            color: var(--text-weak);
            font-size: .95rem;
            line-height: 1.85;
        }
        .accordion-item .accordion-content a {
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== CTA ===== */
        .cta-wrap {
            background: linear-gradient(135deg, rgba(23, 30, 58, .94), rgba(43, 58, 140, .85)), url('/assets/images/backpic/back-1.png') center/cover;
            border-radius: 28px;
            padding: 64px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-wrap h2 {
            font-size: clamp(1.5rem, 2.6vw, 2.1rem);
            font-weight: 800;
            margin: 0 0 14px;
        }
        .cta-wrap p {
            max-width: 620px;
            margin: 0 auto 28px;
            color: rgba(255, 255, 255, .82);
            font-size: 1rem;
            line-height: 1.8;
        }
        .cta-wrap .btn-white {
            background: #fff;
            color: var(--primary-deep);
            box-shadow: 0 8px 24px rgba(0, 0, 0, .2);
        }
        .cta-wrap .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 32px rgba(0, 0, 0, .3);
        }
        .cta-wrap .btn-ghost {
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .35);
            color: #fff;
        }
        .cta-wrap .btn-ghost:hover {
            background: rgba(255, 255, 255, .2);
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #141a33;
            color: rgba(255, 255, 255, .72);
            padding: 60px 0 0;
            margin-top: 90px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.16rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand small {
            font-size: .72rem;
            font-weight: 700;
            color: var(--accent);
            background: rgba(245, 166, 35, .14);
            padding: 2px 8px;
            border-radius: 6px;
        }
        .footer-about {
            font-size: .9rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, .6);
            margin: 12px 0 0;
            max-width: 320px;
        }
        .footer-title {
            color: #fff;
            font-size: .95rem;
            font-weight: 700;
            margin: 0 0 16px;
            letter-spacing: .04em;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: .9rem;
            color: rgba(255, 255, 255, .6);
            transition: color .2s ease;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: .88rem;
            color: rgba(255, 255, 255, .6);
            line-height: 1.6;
        }
        .footer-contact i {
            color: var(--accent);
            margin-top: 5px;
            flex-shrink: 0;
        }
        .footer-bottom {
            padding: 22px 0;
            text-align: center;
        }
        .footer-bottom p {
            font-size: .84rem;
            color: rgba(255, 255, 255, .45);
            margin: 0;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, .62);
            border-bottom: 1px solid transparent;
            transition: color .2s, border-color .2s;
        }
        .footer-bottom a:hover {
            color: var(--accent);
            border-color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root {
                --space-section: 72px;
            }
            .main-nav .nav-link {
                padding: 8px 12px;
                font-size: .9rem;
            }
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-wrap {
                padding: 40px 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 34px;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --space-section: 58px;
            }
            .nav-dock {
                flex-wrap: wrap;
                padding: 10px 14px;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 6px;
                padding: 12px 0 4px;
                border-top: 1px solid var(--border);
                margin-top: 10px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav .nav-link {
                padding: 12px 16px;
                font-size: .95rem;
                text-align: center;
            }
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .nav-toggle i.fa-xmark {
                display: none;
            }
            .nav-toggle.active i.fa-bars {
                display: none;
            }
            .nav-toggle.active i.fa-xmark {
                display: inline-block;
            }
            .page-hero {
                padding: 64px 0 56px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr) !important;
                gap: 18px !important;
            }
            .card-grid {
                grid-template-columns: 1fr;
                max-width: 480px;
                margin: 0 auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cta-wrap {
                padding: 44px 24px;
            }
            .article-item {
                flex-direction: column;
                padding: 20px;
                gap: 12px;
            }
            .btn-group {
                flex-direction: column;
                align-items: stretch;
            }
            .btn {
                width: 100%;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }
            .page-hero h1 {
                font-size: 1.7rem;
            }
            .steps-grid {
                grid-template-columns: 1fr !important;
            }
            .section-head {
                margin-bottom: 36px;
            }
            .intro-media img {
                height: 250px;
            }
            .footer-bottom p {
                font-size: .78rem;
                line-height: 1.7;
            }
        }

/* roulang page: article */
:root {
            --primary: #0f172a;
            --primary-light: #1e293b;
            --accent: #e94560;
            --accent-soft: #fef2f3;
            --gold: #f59e0b;
            --bg: #f8fafc;
            --bg-soft: #f1f5f9;
            --card: #ffffff;
            --text: #1e293b;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius: 18px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
            --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.12);
            --space: 80px;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }

        input,
        textarea {
            font-family: inherit;
            outline: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 顶部浮动导航 ===== */
        .site-header {
            position: sticky;
            top: 16px;
            z-index: 1000;
            padding: 0 24px;
        }

        .nav-dock {
            max-width: 1200px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(226, 232, 240, 0.7);
            border-radius: 999px;
            padding: 10px 14px 10px 22px;
            display: flex;
            align-items: center;
            gap: 16px;
            box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
            min-height: 58px;
        }

        .brand {
            display: flex;
            align-items: baseline;
            gap: 4px;
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
            flex-shrink: 0;
            white-space: nowrap;
        }

        .brand small {
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: var(--accent-soft);
            padding: 2px 8px;
            border-radius: 999px;
            letter-spacing: 0.5px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
            flex-wrap: nowrap;
        }

        .nav-link {
            padding: 8px 14px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-weak);
            white-space: nowrap;
            transition: all 0.25s ease;
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--bg-soft);
        }

        .nav-link.active {
            color: var(--primary);
            background: var(--bg-soft);
            font-weight: 600;
        }

        .nav-cta {
            padding: 8px 20px;
            border-radius: 999px;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
            transition: all 0.25s ease;
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.2);
        }

        .nav-cta:hover {
            background: var(--accent);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(233, 69, 96, 0.3);
        }

        .nav-toggle {
            display: none;
            width: 38px;
            height: 38px;
            border-radius: 999px;
            background: var(--bg-soft);
            color: var(--primary);
            font-size: 15px;
            align-items: center;
            justify-content: center;
            transition: background 0.25s ease;
        }

        .nav-toggle:hover {
            background: var(--border);
        }

        /* ===== 文章英雄区 ===== */
        .article-hero {
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 80px 0 60px;
            margin-top: 10px;
            position: relative;
            border-radius: 0 0 32px 32px;
            overflow: hidden;
        }

        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.55));
        }

        .article-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            transition: color 0.25s ease;
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb i {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.4);
        }

        .breadcrumb .crumb-current {
            color: var(--gold);
            font-weight: 500;
        }

        .article-hero h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            color: #fff;
            max-width: 800px;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .article-meta i {
            color: var(--gold);
            font-size: 14px;
        }

        .article-meta .badge-category {
            background: rgba(245, 158, 11, 0.2);
            border: 1px solid rgba(245, 158, 11, 0.4);
            color: var(--gold);
            padding: 3px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 50px 0 0;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }

        .article-content {
            background: var(--card);
            border-radius: var(--radius);
            padding: 48px 52px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

        .article-content p {
            margin-bottom: 22px;
            font-size: 16px;
            line-height: 1.9;
            color: #334155;
        }

        .article-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary);
            margin: 40px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--bg-soft);
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin: 30px 0 12px;
            line-height: 1.4;
        }

        .article-content h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--primary);
            margin: 24px 0 10px;
        }

        .article-content ul {
            margin: 0 0 24px 0;
            padding-left: 24px;
            list-style: none;
        }

        .article-content ul li {
            position: relative;
            padding-left: 8px;
            margin-bottom: 10px;
            color: #334155;
            font-size: 15px;
            line-height: 1.7;
        }

        .article-content ul li::before {
            content: "";
            position: absolute;
            left: -8px;
            top: 12px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }

        .article-content ol {
            margin: 0 0 24px 24px;
        }

        .article-content ol li {
            margin-bottom: 10px;
            color: #334155;
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: var(--accent-soft);
            padding: 16px 24px;
            border-radius: 0 10px 10px 0;
            margin: 24px 0;
            font-style: italic;
            color: #475569;
            font-size: 15px;
        }

        .article-content blockquote p {
            margin-bottom: 0;
        }

        .article-content img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
            box-shadow: var(--shadow);
            width: 100%;
        }

        .article-content a {
            color: var(--accent);
            font-weight: 500;
            border-bottom: 1px solid transparent;
            transition: border-color 0.25s ease;
        }

        .article-content a:hover {
            border-bottom-color: var(--accent);
        }

        /* 侧边栏 */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 20px;
            position: sticky;
            top: 100px;
        }

        .sidebar-card {
            background: var(--card);
            border-radius: var(--radius);
            padding: 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

        .sidebar-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--bg-soft);
        }

        .sidebar-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.8;
        }

        .sidebar-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .sidebar-list li {
            margin-bottom: 10px;
        }

        .sidebar-list li:last-child {
            margin-bottom: 0;
        }

        .sidebar-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 9px 12px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text);
            background: var(--bg-soft);
            transition: all 0.25s ease;
        }

        .sidebar-list a:hover {
            background: var(--accent-soft);
            color: var(--accent);
            transform: translateX(4px);
        }

        .sidebar-list i {
            color: var(--accent);
            font-size: 13px;
            width: 16px;
            text-align: center;
        }

        .sidebar-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 13px;
            color: var(--text-weak);
            padding: 8px 0;
            border-bottom: 1px dashed var(--border);
        }

        .sidebar-contact li:last-child {
            border-bottom: none;
        }

        .sidebar-contact i {
            color: var(--accent);
            font-size: 14px;
            margin-top: 3px;
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: var(--space) 0 0;
        }

        .section-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .section-title h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            position: relative;
            padding-left: 18px;
        }

        .section-title h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 4px;
            border-radius: 4px;
            background: var(--accent);
        }

        .section-title .section-more {
            font-size: 14px;
            color: var(--text-weak);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.25s ease;
        }

        .section-title .section-more:hover {
            color: var(--accent);
        }

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

        .related-card {
            background: var(--card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(233, 69, 96, 0.3);
        }

        .related-card .card-cover {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .related-card .card-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(15, 23, 42, 0.3), rgba(15, 23, 42, 0));
        }

        .related-card .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.88);
            color: var(--primary);
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(8px);
        }

        .related-card .card-body {
            padding: 20px;
        }

        .related-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .related-card p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .related-card .card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .related-card .card-link i {
            font-size: 12px;
            transition: transform 0.25s ease;
        }

        .related-card:hover .card-link i {
            transform: translateX(4px);
        }

        /* ===== 分类入口 ===== */
        .category-section {
            padding: var(--space) 0;
        }

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

        .category-card {
            background: var(--card);
            border-radius: var(--radius);
            padding: 30px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            text-align: center;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .category-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--accent);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .category-card:hover::before {
            opacity: 1;
        }

        .category-card .cat-icon {
            width: 60px;
            height: 60px;
            background: var(--accent-soft);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            color: var(--accent);
            font-size: 24px;
            transition: all 0.3s ease;
        }

        .category-card:hover .cat-icon {
            background: var(--accent);
            color: #fff;
            transform: rotate(-6deg) scale(1.05);
        }

        .category-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .category-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .category-card .cat-arrow {
            color: var(--accent);
            font-size: 14px;
            font-weight: 600;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 0 0 var(--space);
        }

        .cta-box {
            background: linear-gradient(135deg, var(--primary), #1e3a5f);
            border-radius: 24px;
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
        }

        .cta-box::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 240px;
            height: 240px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 50%;
        }

        .cta-box h2 {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
        }

        .cta-box p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 15px;
            margin-bottom: 24px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 2;
        }

        .cta-box .cta-btn {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 12px 32px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            position: relative;
            z-index: 2;
            transition: all 0.3s ease;
            box-shadow: 0 4px 16px rgba(233, 69, 96, 0.3);
        }

        .cta-box .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(233, 69, 96, 0.5);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
            border-radius: 32px 32px 0 0;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            display: block;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
        }

        .footer-brand small {
            display: block;
            font-size: 13px;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 4px;
        }

        .footer-about {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: all 0.25s ease;
        }

        .footer-links a:hover {
            color: var(--gold);
            padding-left: 4px;
        }

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 10px;
        }

        .footer-contact i {
            color: var(--accent);
            margin-top: 4px;
            font-size: 13px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-bottom a:hover {
            color: var(--gold);
        }

        /* ===== 内容未找到 ===== */
        .notfound-section {
            padding: 80px 0 100px;
            text-align: center;
        }

        .notfound-hero {
            background-size: cover;
            background-position: center;
            padding: 80px 0 60px;
            position: relative;
            margin-top: 10px;
            border-radius: 0 0 32px 32px;
            overflow: hidden;
            text-align: center;
        }

        .notfound-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.55));
        }

        .notfound-hero .container {
            position: relative;
            z-index: 2;
        }

        .notfound-hero h1 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }

        .notfound-hero p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }

        .notfound-card {
            max-width: 420px;
            margin: 0 auto;
            background: var(--card);
            border-radius: var(--radius);
            padding: 48px 36px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
        }

        .notfound-card i {
            font-size: 48px;
            color: var(--accent);
            margin-bottom: 20px;
        }

        .notfound-card p {
            color: var(--text-weak);
            margin-bottom: 24px;
            font-size: 15px;
        }

        .notfound-card .btn-back {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 10px 28px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 4px 14px rgba(15, 23, 42, 0.25);
        }

        .notfound-card .btn-back:hover {
            background: var(--accent);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(233, 69, 96, 0.3);
        }

        /* ===== 移动端 ===== */
        @media (max-width: 1024px) {
            .article-hero h1 {
                font-size: 30px;
            }

            .article-content {
                padding: 36px 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 900px) {
            .nav-dock {
                border-radius: 20px;
                flex-wrap: wrap;
                gap: 8px;
                padding: 12px 16px;
            }

            .main-nav {
                order: 3;
                width: 100%;
                overflow-x: auto;
                padding-top: 8px;
                border-top: 1px solid var(--border);
                margin-left: 0;
                gap: 2px;
                display: none;
            }

            .main-nav.open {
                display: flex;
            }

            .nav-link {
                flex-shrink: 0;
            }

            .nav-toggle {
                display: inline-flex;
                margin-left: auto;
            }

            .nav-cta {
                display: none;
            }

            .article-layout {
                grid-template-columns: 1fr;
            }

            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 16px;
            }

            .sidebar-card {
                flex: 1 1 250px;
            }

            .related-grid,
            .category-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }

            .site-header {
                top: 8px;
                padding: 0 12px;
            }

            .nav-dock {
                border-radius: 16px;
                padding: 10px 12px;
            }

            .brand {
                font-size: 18px;
            }

            .brand small {
                font-size: 11px;
                padding: 2px 6px;
            }

            .article-hero {
                padding: 50px 0 40px;
            }

            .article-hero h1 {
                font-size: 24px;
            }

            .article-meta {
                gap: 12px;
                font-size: 13px;
            }

            .article-content {
                padding: 24px 20px;
                border-radius: 14px;
            }

            .article-content h2 {
                font-size: 22px;
            }

            .article-content h3 {
                font-size: 18px;
            }

            .related-grid,
            .category-grid {
                grid-template-columns: 1fr;
            }

            .section-title {
                margin-bottom: 20px;
            }

            .section-title h2 {
                font-size: 22px;
            }

            .cta-box {
                padding: 32px 24px;
            }

            .cta-box h2 {
                font-size: 22px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-about {
                max-width: 100%;
            }

            .notfound-card {
                padding: 36px 24px;
            }
        }

        @media (max-width: 520px) {
            .nav-dock {
                min-height: 52px;
            }

            .main-nav {
                gap: 0;
            }

            .nav-link {
                padding: 6px 10px;
                font-size: 13px;
            }

            .nav-toggle {
                width: 32px;
                height: 32px;
                font-size: 13px;
            }

            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .article-hero h1 {
                font-size: 21px;
            }

            .breadcrumb {
                font-size: 12px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #dbeafe;
            --accent: #f59e0b;
            --accent-light: #fef3c7;
            --bg: #f7f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-weak: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 16px 50px rgba(0, 0, 0, 0.10);
            --space-xl: 110px;
            --space-lg: 80px;
            --space-md: 50px;
            --space-sm: 30px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: all 0.25s ease;
        }

        a:hover {
            color: var(--primary-dark);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .text-center {
            text-align: center;
        }

        /* ===== 顶部导航浮动Dock ===== */
        .site-header {
            position: sticky;
            top: 16px;
            z-index: 100;
            padding: 0 20px;
            margin-bottom: 20px;
        }

        .nav-dock {
            max-width: 1120px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(226, 232, 240, 0.7);
            border-radius: 60px;
            padding: 10px 24px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
            transition: box-shadow 0.3s ease;
        }

        .nav-dock:hover {
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
        }

        .brand {
            display: flex;
            align-items: baseline;
            gap: 6px;
            font-size: 21px;
            font-weight: 900;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
            margin-right: 28px;
        }

        .brand small {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            padding: 2px 10px;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }

        .main-nav {
            display: flex;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-weak);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
        }

        .nav-cta {
            padding: 9px 24px;
            border-radius: 30px;
            background: linear-gradient(135deg, var(--primary), #4f46e5);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
            transition: all 0.3s ease;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.45);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text);
            cursor: pointer;
            padding: 6px;
            margin-left: auto;
        }

        /* 移动端导航 */
        @media (max-width: 900px) {
            .site-header {
                top: 10px;
                padding: 0 14px;
            }

            .nav-dock {
                border-radius: 30px;
                padding: 8px 16px;
                flex-wrap: wrap;
            }

            .brand {
                font-size: 18px;
                margin-right: 12px;
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: block;
            }

            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 12px 8px 8px;
                gap: 2px;
            }

            .main-nav.open {
                display: flex;
            }

            .nav-link {
                padding: 12px 16px;
                border-radius: 12px;
                font-size: 15px;
            }
        }

        /* ===== 页面Hero ===== */
        .page-hero {
            position: relative;
            padding: 110px 0 90px;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 60%, #2563eb 100%);
            overflow: hidden;
            text-align: center;
            color: #fff;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: 50%;
            transform: translateX(-50%);
            width: 800px;
            height: 200px;
            background: radial-gradient(ellipse, rgba(37, 99, 235, 0.3), transparent 70%);
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 24px;
        }

        .hero-badge i {
            color: var(--accent);
        }

        .page-hero h1 {
            font-size: clamp(34px, 5vw, 56px);
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .page-hero p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 650px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-primary {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 6px 20px rgba(255, 255, 255, 0.2);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(255, 255, 255, 0.3);
            color: var(--primary-dark);
        }

        .btn-outline-light {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--space-lg) 0;
        }

        .section-alt {
            background: var(--bg-white);
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header .eyebrow {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 3px;
            text-transform: uppercase;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 16px;
            border-radius: 30px;
            margin-bottom: 14px;
        }

        .section-header h2 {
            font-size: clamp(26px, 4vw, 38px);
            font-weight: 900;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-header p {
            color: var(--text-weak);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto;
        }

        /* ===== 分类卡片网格 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 10px;
        }

        .category-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .card-image-wrap {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

        .card-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .category-card:hover .card-image-wrap img {
            transform: scale(1.05);
        }

        .card-image-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, transparent 50%, rgba(0, 0, 0, 0.3));
        }

        .card-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
        }

        .card-body {
            padding: 24px 26px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .card-body p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }

        .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .card-link i {
            font-size: 12px;
            transition: transform 0.3s ease;
        }

        .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 产品热点条 ===== */
        .hot-bar {
            background: linear-gradient(120deg, #fef3c7, #fde68a);
            border-radius: var(--radius-md);
            padding: 16px 28px;
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 50px;
            flex-wrap: wrap;
            border: 1px solid #fcd34d;
        }

        .hot-bar-label {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            color: #92400e;
            font-size: 14px;
            white-space: nowrap;
        }

        .hot-bar-label i {
            color: var(--accent);
            font-size: 18px;
        }

        .hot-tags {
            display: flex;
            gap: 10px;
            flex: 1;
            flex-wrap: wrap;
        }

        .hot-tag {
            background: rgba(255, 255, 255, 0.7);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            color: #78350f;
            font-weight: 500;
            border: 1px solid rgba(146, 64, 14, 0.15);
            transition: all 0.2s ease;
        }

        .hot-tag:hover {
            background: #fff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        /* ===== 产品榜单 ===== */
        .rank-section {
            background: var(--bg-dark);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .rank-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
        }

        .rank-section .section-header h2 {
            color: #fff;
        }

        .rank-section .section-header p {
            color: rgba(255, 255, 255, 0.6);
        }

        .rank-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 10px;
            position: relative;
            z-index: 2;
        }

        .rank-card {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            display: flex;
            gap: 20px;
            align-items: center;
            transition: all 0.3s ease;
        }

        .rank-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }

        .rank-number {
            font-size: 32px;
            font-weight: 900;
            color: rgba(255, 255, 255, 0.2);
            min-width: 55px;
            text-align: center;
        }

        .rank-info {
            flex: 1;
        }

        .rank-info h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 4px;
            color: #fff;
        }

        .rank-info p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            margin: 0;
        }

        .rank-tag {
            background: rgba(245, 158, 11, 0.2);
            color: #fbbf24;
            border: 1px solid rgba(245, 158, 11, 0.3);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            white-space: nowrap;
        }

        /* ===== 图文内容区 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .feature-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .feature-visual img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .feature-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, transparent 60%, rgba(37, 99, 235, 0.15));
            pointer-events: none;
        }

        .feature-content h2 {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text);
        }

        .feature-content h2 span {
            color: var(--primary);
        }

        .feature-content p {
            color: var(--text-weak);
            font-size: 16px;
            margin-bottom: 24px;
            line-height: 1.8;
        }

        .feature-list {
            list-style: none;
            display: grid;
            gap: 14px;
            margin-bottom: 28px;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text);
        }

        .feature-list li i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 16px;
            background: var(--primary-light);
            border-radius: 50%;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 13px;
        }

        /* 移动端反转 */
        @media (max-width: 900px) {
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .feature-visual img {
                height: 260px;
            }
        }

        /* ===== 知识库列表 ===== */
        .knowledge-section {
            background: var(--bg-white);
        }

        .knowledge-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .knowledge-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: all 0.3s ease;
        }

        .knowledge-card:hover {
            background: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .knowledge-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 18px;
        }

        .knowledge-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }

        .knowledge-card p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .knowledge-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 12px;
            color: var(--text-light);
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        .knowledge-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== 热门关键词标签墙 ===== */
        .tag-wall {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-top: 30px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .tag-wall a {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 8px 22px;
            font-size: 14px;
            color: var(--text-weak);
            transition: all 0.25s ease;
        }

        .tag-wall a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(37, 99, 235, 0.25);
            transform: translateY(-2px);
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 760px;
            margin: 0 auto;
            display: grid;
            gap: 14px;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 28px;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--primary-light);
        }

        .faq-question {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .faq-question i {
            color: var(--primary);
            background: var(--primary-light);
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            flex-shrink: 0;
        }

        .faq-answer {
            padding: 12px 0 0 40px;
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 90px 0;
            background: linear-gradient(135deg, #1e3a5f, #2563eb);
            position: relative;
            overflow: hidden;
            text-align: center;
            color: #fff;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 500px;
            margin: 0 auto 32px;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: #94a3b8;
            padding: 70px 0 0;
            position: relative;
            z-index: 2;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand {
            display: flex;
            align-items: baseline;
            gap: 8px;
            font-size: 22px;
            font-weight: 900;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand small {
            font-size: 12px;
            font-weight: 700;
            color: var(--accent);
            background: rgba(245, 158, 11, 0.15);
            padding: 2px 10px;
            border-radius: 20px;
        }

        .footer-about {
            font-size: 14px;
            line-height: 1.8;
            color: #94a3b8;
            max-width: 320px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }

        .footer-links {
            list-style: none;
            display: grid;
            gap: 10px;
        }

        .footer-links a {
            color: #94a3b8;
            font-size: 14px;
            transition: all 0.25s ease;
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-contact li {
            font-size: 14px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: #94a3b8;
        }

        .footer-contact li i {
            color: var(--primary);
            margin-top: 4px;
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: #64748b;
        }

        .footer-bottom a {
            color: #94a3b8;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .category-grid,
            .knowledge-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--space-md) 0;
            }

            .category-grid,
            .knowledge-grid {
                grid-template-columns: 1fr;
            }

            .rank-grid {
                grid-template-columns: 1fr;
            }

            .rank-card {
                padding: 20px;
            }

            .page-hero {
                padding: 80px 0 60px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

            .page-hero p {
                font-size: 16px;
            }

            .feature-content h2 {
                font-size: 24px;
            }

            .hot-bar {
                padding: 14px 20px;
            }

            .cta-section h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }

            .hero-actions {
                flex-direction: column;
            }

            .rank-number {
                font-size: 24px;
                min-width: 40px;
            }

            .rank-tag {
                display: none;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .section-header h2 {
                font-size: 24px;
            }

            .faq-answer {
                padding-left: 36px;
            }
        }

        /* 焦点可见性 */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(37, 99, 235, 0.4);
            outline-offset: 2px;
        }

/* roulang page: category3 */
:root{
  --primary:#0d3b8f;
  --primary-dark:#0a2354;
  --primary-light:#5176c4;
  --accent:#f5a623;
  --accent-dark:#d68a0c;
  --success:#27ae60;
  --bg:#f4f7fc;
  --white:#ffffff;
  --text:#142033;
  --text-light:#66778f;
  --border:#e4eaf3;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 12px 34px rgba(13,59,143,.10);
  --shadow-lg:0 20px 48px rgba(13,59,143,.16);
  --transition:.25s ease;
  --spacing:100px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s}
a:hover{color:var(--primary)}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;line-height:inherit;border:none;outline:none}
.container{max-width:var(--container);margin:0 auto;padding:0 28px;width:100%}
::selection{background:var(--primary);color:#fff}

/* ========== 导航 Dock ========== */
.site-header{
  position:sticky;top:16px;z-index:100;padding:0 24px;transition:transform .3s;
}
.nav-dock{
  max-width:1220px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(18px);
  border:1px solid rgba(255,255,255,.7);
  border-radius:60px;padding:10px 14px 10px 22px;
  box-shadow:0 8px 32px rgba(10,35,84,.12),inset 0 1px 0 rgba(255,255,255,.6);
}
.site-header.scrolled .nav-dock{box-shadow:0 12px 42px rgba(10,35,84,.16)}
.brand{
  display:flex;align-items:baseline;gap:6px;font-size:24px;font-weight:800;color:var(--primary-dark);
  letter-spacing:.5px;white-space:nowrap;
}
.brand small{
  font-size:13px;font-weight:600;color:var(--accent);
  background:linear-gradient(120deg,var(--accent),#ffc75f);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;letter-spacing:1px;
}
.main-nav{display:flex;align-items:center;gap:6px}
.nav-link{
  font-size:15px;font-weight:600;color:var(--text-light);
  padding:9px 18px;border-radius:40px;letter-spacing:.3px;
  transition:all var(--transition);position:relative;
}
.nav-link:hover{color:var(--primary);background:rgba(13,59,143,.06)}
.nav-link.active{color:#fff;background:linear-gradient(135deg,var(--primary),#1f5bc1);box-shadow:0 6px 18px rgba(13,59,143,.35)}
.nav-cta{
  font-size:14px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,var(--accent),#ffb84d);
  padding:10px 22px;border-radius:40px;letter-spacing:.5px;
  box-shadow:0 6px 18px rgba(245,166,35,.4);
  transition:all var(--transition);white-space:nowrap;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(245,166,35,.5);color:#fff}
.nav-toggle{display:none;background:transparent;font-size:22px;color:var(--primary);cursor:pointer;padding:6px 10px;border-radius:10px}
.nav-toggle.active{background:rgba(13,59,143,.1)}

/* ========== 页面横幅 ========== */
.page-banner{
  position:relative;min-height:540px;display:flex;align-items:center;
  background:url('/assets/images/backpic/back-2.png') center 40% / cover no-repeat;
  margin:20px 24px 0;border-radius:32px;overflow:hidden;
}
.banner-overlay{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(5,16,42,.9) 15%,rgba(10,35,84,.75) 45%,rgba(13,59,143,.35) 80%);
}
.banner-content{position:relative;z-index:2;max-width:680px;padding:70px 36px}
.banner-badge{
  display:inline-flex;align-items:center;gap:8px;color:#fff;font-size:14px;font-weight:600;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.25);
  padding:8px 20px;border-radius:40px;backdrop-filter:blur(8px);
}
.banner-badge i{color:var(--accent)}
.banner-content h1{
  color:#fff;font-size:48px;line-height:1.2;font-weight:900;margin:22px 0 18px;letter-spacing:1px;
}
.banner-content p{
  color:rgba(255,255,255,.85);font-size:17px;max-width:560px;margin-bottom:32px;
}
.banner-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{
  display:inline-flex;align-items:center;gap:10px;font-size:15px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--accent),#ffb84d);
  padding:15px 32px;border-radius:50px;box-shadow:0 10px 28px rgba(245,166,35,.4);
  transition:all var(--transition);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 36px rgba(245,166,35,.5);color:#fff}
.btn-ghost{
  display:inline-flex;align-items:center;gap:10px;font-size:15px;font-weight:700;color:#fff;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.4);
  padding:15px 32px;border-radius:50px;backdrop-filter:blur(8px);
  transition:all var(--transition);
}
.btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff;transform:translateY(-3px)}
.banner-meta{
  margin-top:38px;display:flex;gap:26px;flex-wrap:wrap;
}
.banner-meta li{color:rgba(255,255,255,.8);font-size:14px;display:flex;align-items:center;gap:8px}
.banner-meta i{color:var(--accent);width:18px;text-align:center}

/* ========== 通用板块 ========== */
.section{padding:var(--spacing) 0;position:relative}
.section-white{background:var(--white)}
.section-dark{
  background:linear-gradient(160deg,var(--primary-dark) 0%,#0e2e68 60%,#123d8f 100%);
  color:#fff;border-radius:48px;margin:0 24px;padding:90px 0;
}
.section-head{text-align:center;max-width:680px;margin:0 auto 56px}
.section-tag{
  display:inline-block;font-size:13px;font-weight:800;color:var(--primary);
  letter-spacing:3px;background:rgba(13,59,143,.08);border-radius:30px;padding:7px 18px;margin-bottom:14px;
}
.section-head h2{
  font-size:36px;font-weight:900;color:var(--primary-dark);line-height:1.3;margin-bottom:12px;
}
.section-head p{color:var(--text-light);font-size:16px}
.section-head.light .section-tag{color:var(--accent);background:rgba(245,166,35,.18)}
.section-head.light h2{color:#fff}
.section-head.light p{color:rgba(255,255,255,.7)}

/* ========== 最新资讯卡片 ========== */
.news-grid{margin-bottom:48px}
.news-card{
  background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);
  box-shadow:0 4px 16px rgba(10,35,84,.05);
  transition:all var(--transition);height:100%;display:flex;flex-direction:column;
}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.news-thumb{position:relative;overflow:hidden;aspect-ratio:16/10;background:#eef2f8}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-card:hover .news-thumb img{transform:scale(1.06)}
.news-tag{
  position:absolute;left:16px;top:16px;z-index:2;font-size:12px;font-weight:700;
  color:#fff;background:linear-gradient(135deg,var(--primary),#2a65cc);
  padding:5px 14px;border-radius:30px;box-shadow:0 6px 14px rgba(13,59,143,.3);
}
.news-tag.hot{background:linear-gradient(135deg,#ff6b6b,#f5a623);box-shadow:0 6px 14px rgba(245,90,50,.3)}
.news-card-body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1}
.news-card-body h3{font-size:18px;font-weight:800;line-height:1.5;color:var(--primary-dark);margin-bottom:10px}
.news-card-body h3 a{transition:color .2s}
.news-card-body h3 a:hover{color:var(--accent)}
.news-card-body p{font-size:14px;color:var(--text-light);line-height:1.7;flex:1}
.news-meta{
  display:flex;align-items:center;gap:18px;margin-top:20px;padding-top:18px;
  border-top:1px solid var(--border);font-size:13px;color:var(--text-light);
}
.news-meta i{margin-right:6px;color:var(--primary-light)}
.center-btn{text-align:center}
.btn-outline{
  display:inline-flex;align-items:center;gap:10px;font-size:15px;font-weight:700;color:var(--primary);
  border:2px solid var(--primary);padding:13px 34px;border-radius:50px;transition:all var(--transition);
}
.btn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(13,59,143,.3)}

/* ========== 热门活动 ========== */
.event-layout{display:flex;gap:32px}
.event-feature{
  flex:0 0 46%;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:24px;overflow:hidden;backdrop-filter:blur(10px);
  transition:transform var(--transition),box-shadow var(--transition);
}
.event-feature:hover{transform:translateY(-6px);box-shadow:0 24px 50px rgba(0,0,0,.3)}
.event-feature img{width:100%;aspect-ratio:16/9;object-fit:cover}
.event-feature-body{padding:28px}
.event-feature-body .date-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--accent);
  background:rgba(245,166,35,.15);border:1px solid rgba(245,166,35,.3);padding:6px 14px;border-radius:30px;margin-bottom:14px;
}
.event-feature-body h3{font-size:24px;font-weight:800;line-height:1.4;margin-bottom:12px}
.event-feature-body p{color:rgba(255,255,255,.75);font-size:15px;margin-bottom:20px}
.event-link{color:var(--accent);font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:8px}
.event-link i{transition:transform .3s}
.event-link:hover i{transform:translateX(6px)}
.event-list{flex:1;display:flex;flex-direction:column;gap:16px}
.event-item{
  display:flex;gap:20px;align-items:center;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);border-radius:20px;padding:16px 18px;
  transition:all var(--transition);cursor:pointer;flex:1;
}
.event-item:hover{background:rgba(255,255,255,.12);transform:translateX(8px)}
.event-item img{width:110px;height:76px;object-fit:cover;border-radius:12px;flex-shrink:0}
.event-item-info{flex:1;min-width:0}
.event-item-info .item-tag{
  font-size:12px;font-weight:700;color:var(--accent);background:rgba(245,166,35,.15);
  padding:3px 12px;border-radius:30px;display:inline-block;margin-bottom:6px;
}
.event-item-info h4{font-size:16px;font-weight:700;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.event-item-info .item-date{font-size:13px;color:rgba(255,255,255,.6);margin-top:4px}
.event-item i.arrow{color:var(--accent);font-size:18px;flex-shrink:0}

/* ========== 数据统计 ========== */
.stats-strip{padding:80px 0;background:linear-gradient(135deg,#f0f5ff,#fff);position:relative}
.stats-strip::before{
  content:'';position:absolute;inset:0;opacity:.5;pointer-events:none;
  background:radial-gradient(circle at 20% 30%,rgba(13,59,143,.08),transparent 50%),radial-gradient(circle at 80% 70%,rgba(245,166,35,.08),transparent 50%);
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;position:relative;z-index:2}
.stat-item{
  background:#fff;border:1px solid var(--border);border-radius:22px;padding:38px 24px;text-align:center;
  box-shadow:0 8px 28px rgba(10,35,84,.08);transition:all var(--transition);
}
.stat-item:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.stat-num{
  font-size:44px;font-weight:900;color:var(--primary);line-height:1.2;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.stat-label{font-size:15px;color:var(--text-light);margin-top:10px}

/* ========== 动态时间线 ========== */
.timeline-wrap{position:relative;max-width:860px;margin:0 auto}
.timeline-wrap::before{
  content:'';position:absolute;top:0;left:22px;width:3px;height:100%;
  background:linear-gradient(to bottom,var(--primary),var(--accent));
  border-radius:3px;opacity:.25;
}
.timeline-item{position:relative;padding:0 0 42px 74px}
.timeline-item:last-child{padding-bottom:0}
.timeline-dot{
  position:absolute;left:11px;top:6px;width:26px;height:26px;border-radius:50%;
  background:var(--primary);border:5px solid #dfe8f7;box-shadow:0 0 0 3px rgba(13,59,143,.2);
}
.timeline-dot.accent{background:var(--accent);border-color:#fdeccd;box-shadow:0 0 0 3px rgba(245,166,35,.25)}
.timeline-date{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:1px;margin-bottom:6px}
.timeline-body{
  background:#fff;border:1px solid var(--border);border-radius:18px;padding:24px 28px;
  box-shadow:0 4px 16px rgba(10,35,84,.05);transition:all var(--transition);
}
.timeline-body:hover{box-shadow:var(--shadow);transform:translateX(4px)}
.timeline-body h3{font-size:18px;font-weight:800;color:var(--primary-dark);margin-bottom:8px}
.timeline-body p{font-size:14px;color:var(--text-light)}

/* ========== FAQ ========== */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:16px;margin-bottom:16px;overflow:hidden;
  transition:box-shadow var(--transition),border-color var(--transition);
}
.faq-item:hover{box-shadow:var(--shadow);border-color:var(--primary-light)}
.faq-item summary{
  cursor:pointer;list-style:none;display:flex;align-items:center;gap:16px;
  padding:22px 26px;font-size:16px;font-weight:700;color:var(--primary-dark);
}
.faq-item summary::-webkit-details-marker{display:none;list-style:none}
.faq-item summary::before{
  content:'\f059';font-family:"Font Awesome 6 Free";font-weight:900;
  color:var(--accent);font-size:20px;flex-shrink:0;
}
.faq-item summary::after{
  content:'\f078';font-family:"Font Awesome 6 Free";font-weight:900;
  margin-left:auto;color:var(--text-light);font-size:14px;transition:transform .3s;
}
.faq-item[open] summary::after{transform:rotate(180deg);color:var(--accent)}
.faq-item p{padding:0 28px 24px 62px;color:var(--text-light);font-size:15px}

/* ========== CTA ========== */
.cta-section{padding:0 0 var(--spacing)}
.cta-box{
  position:relative;border-radius:32px;overflow:hidden;padding:80px 50px;text-align:center;
  background:url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  display:flex;align-items:center;justify-content:center;min-height:320px;
}
.cta-box .overlay{
  position:absolute;inset:0;background:linear-gradient(120deg,rgba(5,16,42,.9),rgba(13,59,143,.72)); 
}
.cta-content{position:relative;z-index:2;max-width:680px}
.cta-content h2{color:#fff;font-size:34px;font-weight:900;line-height:1.35;margin-bottom:16px}
.cta-content p{color:rgba(255,255,255,.8);font-size:16px;margin-bottom:34px}
.cta-btn{
  display:inline-flex;align-items:center;gap:12px;font-size:16px;font-weight:800;color:var(--primary-dark);
  background:#fff;padding:16px 40px;border-radius:50px;box-shadow:0 12px 36px rgba(0,0,0,.25);
  transition:all var(--transition);
}
.cta-btn:hover{transform:translateY(-3px);box-shadow:0 18px 44px rgba(0,0,0,.32);color:var(--primary);background:var(--accent)}

/* ========== 页脚 ========== */
.site-footer{background:#081a33;color:rgba(255,255,255,.7);padding:76px 0 0;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:48px;padding-bottom:56px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand{display:flex;align-items:baseline;gap:8px;font-size:24px;font-weight:800;color:#fff}
.footer-brand small{font-size:13px;color:var(--accent)}
.footer-about{font-size:14px;line-height:1.8;margin-top:18px;max-width:320px}
.footer-title{color:#fff;font-size:16px;font-weight:700;margin-bottom:20px;letter-spacing:1px}
.footer-links li{margin-bottom:12px;font-size:14px}
.footer-links a{color:rgba(255,255,255,.65);transition:all .2s;display:inline-flex;align-items:center;gap:8px}
.footer-links a::before{content:'';width:4px;height:4px;border-radius:50%;background:var(--accent);opacity:0;transition:opacity .2s}
.footer-links a:hover{color:#fff;padding-left:4px}
.footer-links a:hover::before{opacity:1}
.footer-contact li{display:flex;align-items:center;gap:10px;margin-bottom:14px;font-size:14px}
.footer-contact i{color:var(--accent);width:18px;text-align:center}
.footer-bottom{padding:28px 0;text-align:center;font-size:14px;color:rgba(255,255,255,.45)}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:var(--accent)}

/* ========== 响应式 ========== */
@media (max-width:1024px){
  :root{--spacing:80px}
  .news-grid .cell{flex:0 0 50%;max-width:50%}
  .event-layout{flex-direction:column}
  .event-feature{flex:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .banner-content h1{font-size:38px}
  .page-banner{min-height:480px}
}
@media (max-width:768px){
  .site-header{top:10px;padding:0 12px}
  .nav-dock{border-radius:28px;padding:10px 14px;flex-wrap:wrap}
  .main-nav{
    display:none;flex-basis:100%;flex-direction:column;align-items:stretch;gap:4px;
    padding-top:12px;margin-top:8px;border-top:1px solid var(--border);
  }
  .main-nav.open{display:flex}
  .nav-link{padding:12px 16px;border-radius:12px;text-align:center}
  .nav-toggle{display:block}
  .nav-cta{font-size:13px;padding:8px 18px}
  .page-banner{margin:12px 12px 0;min-height:420px;border-radius:24px}
  .banner-content{padding:50px 26px}
  .banner-content h1{font-size:30px}
  .section-head h2{font-size:28px}
  .page-banner{background-position:60% center}
  .news-grid .cell{flex:0 0 100%;max-width:100%}
  .section-dark{border-radius:28px;margin:0 12px;padding:70px 0}
  .event-item{padding:12px}
  .event-item img{width:88px;height:64px}
  .timeline-item{padding-left:56px}
  .cta-box{padding:60px 26px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  :root{--spacing:60px}
  .container{padding:0 18px}
  .nav-dock{border-radius:22px}
  .brand{font-size:20px}
  .brand small{font-size:12px}
  .banner-actions{flex-direction:column;width:100%}
  .btn-primary,.btn-ghost{justify-content:center;width:100%}
  .banner-meta{flex-direction:column;gap:10px}
  .stats-grid{grid-template-columns:1fr}
  .stat-num{font-size:36px}
  .timeline-item{padding-left:48px}
  .timeline-wrap::before{left:14px}
  .timeline-dot{width:20px;height:20px;left:5px}
  .faq-item summary{font-size:15px;padding:18px 18px}
  .faq-item p{padding:0 18px 18px 44px}
  .section-head h2{font-size:25px}
  .cta-box{min-height:280px;padding:50px 22px}
  .cta-content h2{font-size:26px}
  .cta-btn{width:100%;justify-content:center;padding:14px 24px}
  .footer-grid{row-gap:30px}
}