/* roulang page: index */
:root{
  --brand:#1F6BF0;
  --brand-hover:#1857C9;
  --brand-light:#E8F0FE;
  --brand-active:#1449A6;
  --accent:#FF6B2C;
  --accent-hover:#E85A1F;
  --green:#0F9D6B;
  --ink:#10203A;
  --ink-2:#4A5A75;
  --ink-3:#7C8AA3;
  --line:#E3E9F2;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --dark:#0C1A2E;
  --r-card:16px;
  --r-btn:10px;
  --r-lg:20px;
  --shadow-sm:0 2px 8px rgba(16,32,58,.06), 0 12px 32px rgba(16,32,58,.06);
  --shadow-hover:0 4px 14px rgba(16,32,58,.10), 0 18px 44px rgba(16,32,58,.10);
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-num:"Inter",system-ui,-apple-system,"PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--brand-hover);}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 14px;}
h1,h2,h3,h4{margin:0 0 12px;color:var(--ink);line-height:1.3;}
h1{font-size:clamp(30px,4vw,46px);font-weight:700;line-height:1.25;}
h2{font-size:clamp(23px,2.6vw,28px);font-weight:600;}
h3{font-size:20px;font-weight:600;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:3px solid rgba(31,107,240,.35);outline-offset:2px;border-radius:4px;}
.rw-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.rw-container{padding:0 32px;}}
@media (min-width:1280px){.rw-container{max-width:1280px;}}

/* ---------- 顶部信息条 ---------- */
.topbar{height:38px;background:var(--dark);color:rgba(255,255,255,.72);font-size:13px;}
.topbar-inner{height:38px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.3px;font-family:var(--font-num);}
.topbar-tip{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-right{display:flex;align-items:center;gap:16px;}
.topbar-hot{font-family:var(--font-num);}
.topbar-link{color:rgba(255,255,255,.78);}
.topbar-link:hover{color:#fff;}
.btn-xs{height:26px;padding:0 12px;font-size:12px;border-radius:8px;line-height:24px;}
@media (max-width:767px){
  .topbar-hot,.topbar-link{display:none;}
  .topbar-tip{font-size:12px;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;
  transition:background-color .22s ease,color .22s ease,box-shadow .22s ease,transform .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(255,107,44,.28);}
.btn-accent:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,107,44,.32);}
.btn-accent:active{transform:translateY(0);background:var(--accent-hover);}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);}
.btn-primary:active{background:var(--brand-active);transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-hover);border-color:var(--brand-hover);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-white{background:#fff;color:var(--ink);}
.btn-white:hover{background:var(--brand-light);color:var(--brand-active);transform:translateY(-1px);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
.btn-block{width:100%;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);}
.link-more svg{width:16px;height:16px;transition:transform .22s ease;}
.link-more:hover svg{transform:translateX(3px);}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-shrink{box-shadow:0 6px 20px rgba(16,32,58,.08);}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .22s ease;}
.site-header.is-shrink .nav-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand),#4A8DFF);
  color:#fff;font-family:var(--font-num);font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;letter-spacing:.5px;
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.2px;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-link{
  position:relative;padding:0 14px;height:40px;display:inline-flex;align-items:center;
  font-size:15px;font-weight:500;color:var(--ink-2);border-radius:8px;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:4px;height:2px;background:var(--brand);
  border-radius:2px;transition:left .22s ease,right .22s ease;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{left:14px;right:14px;}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{left:14px;right:14px;}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{position:relative;display:flex;align-items:center;}
.nav-search input{
  width:220px;height:40px;padding:0 14px 0 38px;border:1px solid var(--line);
  border-radius:10px;background:var(--bg);transition:border-color .22s ease,background-color .22s ease,box-shadow .22s ease;
}
.nav-search input::placeholder{color:var(--ink-3);font-size:14px;}
.nav-search input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(31,107,240,.15);}
.nav-search svg{position:absolute;left:12px;width:16px;height:16px;color:var(--ink-3);}
.nav-cta{height:40px;padding:0 20px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-drawer{
  display:none;position:fixed;inset:0 0 0 auto;width:84vw;max-width:340px;background:#fff;
  z-index:80;padding:24px 20px;box-shadow:-12px 0 40px rgba(16,32,58,.16);
  transform:translateX(100%);transition:transform .26s ease;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.mobile-drawer h4{font-size:14px;color:var(--ink-3);font-weight:600;margin:8px 0 6px;}
.mobile-drawer a{display:flex;align-items:center;min-height:48px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line);}
.mobile-drawer a.is-active{color:var(--brand);font-weight:600;}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;margin-left:auto;display:flex;align-items:center;justify-content:center;}
.drawer-head{display:flex;align-items:center;margin-bottom:12px;}
@media (max-width:1023px){
  .main-nav,.nav-search{display:none;}
  .nav-toggle{display:flex;}
  .mobile-drawer{display:block;}
  .nav-inner{gap:12px;}
  .nav-actions{gap:10px;}
}
@media (max-width:479px){
  .brand-text{font-size:16px;}
  .nav-cta{height:38px;padding:0 14px;font-size:14px;}
}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:72px 0 80px;overflow:hidden;
  background-image:linear-gradient(180deg,rgba(246,248,252,.94),rgba(255,255,255,.86)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:var(--brand-light);color:var(--brand-active);font-size:13px;font-weight:600;margin-bottom:18px;
}
.hero-sub{font-size:18px;color:var(--ink-2);font-weight:500;margin:14px 0 12px;}
.hero-desc{max-width:600px;color:var(--ink-2);font-size:15.5px;margin-bottom:26px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:40px;}
.hero-stat b{display:block;font-family:var(--font-num);font-size:28px;font-weight:700;color:var(--brand);line-height:1.2;}
.hero-stat span{font-size:13px;color:var(--ink-3);}
.hero-card{
  background:#fff;border-radius:var(--r-lg);box-shadow:var(--shadow-hover);overflow:hidden;
  border:1px solid var(--line);
}
.hero-card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--brand-light);}
.hero-card-media img{width:100%;height:100%;object-fit:cover;}
.hero-card-bar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 22px;
  border-top:1px solid var(--line);background:#fff;
}
.hero-card-bar strong{font-size:15px;font-weight:600;}
.hero-card-bar span{font-size:13px;color:var(--ink-3);}
@media (max-width:1023px){
  .hero{padding:48px 0 56px;}
  .hero-card{margin-top:32px;}
  .hero-stats{gap:28px;}
}
@media (max-width:639px){
  .hero-stat b{font-size:24px;}
  .hero-cta .btn{flex:1 1 100%;}
}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0;}
.section-alt{background:#fff;}
@media (max-width:1023px){.section{padding:64px 0;}}
@media (max-width:639px){.section{padding:56px 0;}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px;}
.section-head h2{margin-bottom:6px;}
.section-head p{margin:0;color:var(--ink-2);font-size:15px;max-width:640px;}
.eyebrow{display:block;font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--brand);text-transform:uppercase;margin-bottom:8px;}
.head-bar{position:relative;padding-left:16px;}
.head-bar::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--brand);}

/* ---------- 权益对比表 ---------- */
.cmp-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-sm);overflow:hidden;}
.cmp-scroll{max-height:none;overflow:visible;}
.cmp-table{width:100%;border-collapse:collapse;font-size:15px;}
.cmp-table caption{text-align:left;padding:22px 26px 6px;font-size:14px;color:var(--ink-3);}
.cmp-table thead th{
  position:sticky;top:0;z-index:3;background:#fff;text-align:center;padding:18px 16px;
  font-size:14px;font-weight:600;color:var(--ink-2);border-bottom:1px solid var(--line);
}
.cmp-table thead th:first-child{text-align:left;padding-left:26px;}
.cmp-table tbody tr:nth-child(even){background:var(--bg);}
.cmp-table tbody tr:hover{background:var(--brand-light);}
.cmp-table td{padding:16px;border-bottom:1px solid var(--line);text-align:center;color:var(--ink-2);font-variant-numeric:tabular-nums;}
.cmp-table td:first-child{text-align:left;padding-left:26px;font-weight:600;color:var(--ink);}
.cmp-col-hot{position:relative;background:rgba(255,107,44,.05);}
.cmp-col-hot::before{content:"";position:absolute;left:0;right:0;top:-1px;height:3px;background:var(--accent);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;background:var(--brand-light);color:var(--brand-active);
}
.badge-accent{background:rgba(255,107,44,.12);color:var(--accent-hover);}
.badge-green{background:rgba(15,157,107,.12);color:var(--green);}
.ico-yes{width:18px;height:18px;color:var(--green);display:inline-block;vertical-align:middle;}
.ico-no{color:var(--ink-3);font-family:var(--font-num);}
@media (max-width:639px){
  .cmp-table thead{display:none;}
  .cmp-table,.cmp-table tbody,.cmp-table tr,.cmp-table td{display:block;width:100%;}
  .cmp-table caption{padding:18px 18px 0;}
  .cmp-table tbody tr{border:1px solid var(--line);border-radius:12px;margin:0 16px 14px;overflow:hidden;background:#fff;}
  .cmp-table tbody tr:nth-child(even){background:#fff;}
  .cmp-table td{border:0;padding:10px 16px;display:flex;align-items:center;justify-content:space-between;gap:14px;text-align:right;}
  .cmp-table td::before{content:attr(data-label);font-weight:600;color:var(--ink-2);text-align:left;font-size:14px;}
  .cmp-table td:first-child{background:var(--brand-light);padding:14px 16px;font-size:16px;font-weight:700;color:var(--ink);}
  .cmp-table td:first-child::before{content:none;}
}

/* ---------- 等级亮点（阶梯卡） ---------- */
.level-grid{align-items:start;}
.level-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:30px 28px;
  box-shadow:var(--shadow-sm);transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
  height:100%;display:flex;flex-direction:column;
}
.level-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#D3DEF0;}
.level-num{font-family:var(--font-num);font-size:14px;font-weight:700;color:var(--brand);letter-spacing:.12em;margin-bottom:12px;}
.level-card h3{margin-bottom:8px;}
.level-card .level-note{font-size:14px;color:var(--ink-3);margin-bottom:18px;}
.level-list{margin-bottom:24px;flex:1 1 auto;}
.level-list li{display:flex;gap:10px;font-size:15px;color:var(--ink-2);padding:7px 0;border-bottom:1px dashed var(--line);}
.level-list li:last-child{border-bottom:0;}
.level-list svg{width:17px;height:17px;flex:0 0 auto;color:var(--green);margin-top:5px;}
.level-card.featured{border-color:rgba(255,107,44,.4);box-shadow:0 10px 30px rgba(255,107,44,.14);}
.level-card.featured .level-num{color:var(--accent);}
.level-lift-1{transform:translateY(0);}
.level-lift-2{transform:translateY(24px);}
.level-lift-3{transform:translateY(48px);}
.level-card:hover.level-lift-1,.level-card:hover.level-lift-2,.level-card:hover.level-lift-3{transform:translateY(22px);}
.level-card.featured:hover{transform:translateY(22px);}
@media (max-width:1023px){
  .level-lift-1,.level-lift-2,.level-lift-3{transform:none;}
  .level-card:hover,.level-card.featured:hover{transform:none;}
  .level-card{margin-bottom:8px;}
}

/* ---------- 专属内容预览 ---------- */
.preview-large{
  position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-sm);
  aspect-ratio:16/10;background:var(--brand-light);
}
.preview-large img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.preview-large:hover img{transform:scale(1.03);}
.preview-flag{
  position:absolute;right:16px;bottom:16px;display:inline-flex;align-items:center;gap:7px;
  height:32px;padding:0 14px;border-radius:999px;background:rgba(12,26,46,.82);color:#fff;font-size:13px;font-weight:600;
  backdrop-filter:blur(2px);
}
.preview-flag svg{width:14px;height:14px;}
.preview-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-sm);overflow:hidden;height:100%;}
.preview-item{display:flex;align-items:center;gap:16px;padding:20px 22px;border-bottom:1px solid var(--line);transition:background-color .22s ease;}
.preview-item:last-child{border-bottom:0;}
.preview-item:hover{background:var(--brand-light);}
.preview-item-main{flex:1 1 auto;min-width:0;}
.preview-item time{display:block;font-size:13px;color:var(--ink-3);font-family:var(--font-num);}
.preview-item strong{display:block;font-size:15.5px;font-weight:600;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.preview-item svg{width:18px;height:18px;color:var(--brand);flex:0 0 auto;}
@media (max-width:1023px){.preview-list{margin-top:22px;}}

/* ---------- 数据条带 ---------- */
.stats-band{
  background:var(--dark);border-radius:var(--r-lg);padding:44px 40px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
}
.stats-band .stat b{display:block;font-family:var(--font-num);font-size:32px;font-weight:700;color:#fff;line-height:1.2;}
.stats-band .stat span{font-size:13.5px;color:rgba(255,255,255,.66);}
.stats-band .stat.hi b{color:#FF9557;}
@media (max-width:899px){.stats-band{grid-template-columns:repeat(2,1fr);padding:32px 26px;}}
@media (max-width:479px){.stats-band{grid-template-columns:1fr;gap:20px;}}

/* ---------- 最新信息列表 ---------- */
.news-grid{margin-top:0;}
.news-card{
  display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-sm);color:inherit;
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.news-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#D3DEF0;color:inherit;}
.news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-light);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.news-body h3{
  font-size:17px;margin:12px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:15px;color:var(--ink-3);margin-bottom:16px;flex:1 1 auto;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-3);font-family:var(--font-num);}
.news-meta .more{color:var(--brand);font-weight:600;font-family:var(--font-cn);}
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);padding:56px 24px;text-align:center;
}
.empty-state svg{width:42px;height:42px;color:var(--ink-3);margin:0 auto 14px;}
.empty-state p{color:var(--ink-3);margin-bottom:18px;}

/* ---------- FAQ ---------- */
.rw-faq{border:0;background:transparent;}
.rw-faq .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden;
  box-shadow:0 1px 4px rgba(16,32,58,.04);
}
.rw-faq .accordion-title{
  border:0;padding:18px 56px 18px 22px;font-size:17px;font-weight:600;color:var(--ink);
  position:relative;line-height:1.5;background:#fff;transition:background-color .22s ease;
}
.rw-faq .accordion-title:hover{background:var(--bg);color:var(--brand);}
.rw-faq .accordion-title::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-family:var(--font-num);font-size:20px;color:var(--brand);font-weight:400;line-height:1;
}
.rw-faq .accordion-title[aria-expanded="true"]{color:var(--brand);}
.rw-faq .accordion-title[aria-expanded="true"]::after{content:"−";}
.rw-faq .accordion-content{border:0;padding:0 22px 20px;background:var(--bg);color:var(--ink-2);font-size:15.5px;}
.rw-faq .accordion-content p{margin:0;}

/* ---------- 订阅表单 ---------- */
.subscribe{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;box-shadow:var(--shadow-sm);}
.subscribe label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--ink);}
.subscribe .field-row{display:flex;gap:12px;align-items:flex-end;}
.subscribe .field{flex:1 1 auto;}
.subscribe input{
  width:100%;height:48px;padding:0 16px;border:1px solid var(--line);border-radius:10px;background:#fff;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.subscribe input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,107,240,.16);}
.form-tip{font-size:13px;color:var(--ink-3);margin:12px 0 0;}
@media (max-width:767px){.subscribe .field-row{flex-direction:column;align-items:stretch;}.subscribe .btn{width:100%;}}

/* ---------- CTA 条带 ---------- */
.cta-band{
  background:var(--dark);border-radius:var(--r-lg);padding:48px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.72);margin:0;font-size:15px;}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
@media (max-width:767px){
  .cta-band{padding:34px 24px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{flex:1 1 100%;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:88px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.8;margin:16px 0 0;max-width:320px;}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0;}
.footer-col a:hover{color:#fff;}
.footer-col span{display:block;font-size:14px;padding:6px 0;font-family:var(--font-num);}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.56);
}
@media (max-width:899px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:559px){.footer-grid{grid-template-columns:1fr;}.site-footer{padding-top:48px;margin-top:64px;}}

/* 小工具 */
.mt-0{margin-top:0;}
.text-center{text-align:center;}

/* roulang page: article */
:root{
    --blue:#1F6BF0;
    --blue-hover:#1857C9;
    --blue-light:#E8F0FE;
    --blue-active:#1449A6;
    --orange:#FF6B2C;
    --orange-hover:#E85A1F;
    --green:#0F9D6B;
    --ink:#10203A;
    --ink-2:#4A5A75;
    --ink-3:#7C8AA3;
    --line:#E3E9F2;
    --bg:#F6F8FC;
    --white:#FFFFFF;
    --dark:#0C1A2E;
    --danger:#E5484D;
    --r-card:16px;
    --r-btn:10px;
    --r-lg:20px;
    --sh-card:0 2px 8px rgba(16,32,58,.06), 0 12px 32px rgba(16,32,58,.06);
    --sh-hover:0 4px 14px rgba(16,32,58,.10), 0 18px 44px rgba(16,32,58,.10);
    --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
    --font-num:"Inter",system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
    margin:0;
    font-family:var(--font);
    font-size:16px;
    line-height:1.75;
    color:var(--ink);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--blue);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--blue-hover);}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--ink);}
p{margin:0;}
:focus-visible{outline:3px solid rgba(31,107,240,.38);outline-offset:2px;border-radius:6px;}
::selection{background:var(--blue-light);color:var(--blue-active);}

.rw-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.rw-container{padding:0 32px;}}
@media (min-width:1280px){.rw-container{max-width:1280px;}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--dark);height:38px;display:flex;align-items:center;font-size:13px;color:rgba(255,255,255,.76);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0;}
.topbar-left .dot{width:6px;height:6px;border-radius:50%;background:var(--green);flex:0 0 auto;}
.topbar-domain{font-family:var(--font-num);letter-spacing:.02em;color:#fff;font-weight:600;}
.topbar-note{color:rgba(255,255,255,.58);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-right{display:flex;align-items:center;gap:18px;flex:0 0 auto;}
.topbar-right a{color:rgba(255,255,255,.76);font-size:13px;}
.topbar-right a:hover{color:#fff;}
.topbar-btn{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;border:1px solid var(--blue);color:#9CC2FF;font-size:12px;font-weight:600;}
.topbar-btn:hover{background:rgba(31,107,240,.2);color:#fff;}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .22s ease;}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(16,32,58,.08);}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .22s ease;}
.site-header.is-scrolled .nav-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--blue),#4E8BFF);color:#fff;font-family:var(--font-num);font-weight:800;font-size:14px;display:grid;place-items:center;letter-spacing:.5px;flex:0 0 auto;}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.2px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:10px;}
.nav-link{position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:8px;color:var(--ink-2);font-size:15px;font-weight:500;}
.nav-link::after{content:"";position:absolute;left:50%;right:50%;bottom:2px;height:2px;border-radius:2px;background:var(--blue);transition:left .22s ease,right .22s ease;}
.nav-link:hover{color:var(--blue);}
.nav-link:hover::after{left:14px;right:14px;}
.nav-link.is-active{color:var(--blue);font-weight:600;}
.nav-link.is-active::after{left:14px;right:14px;}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto;}
.nav-search{display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:var(--bg);transition:border-color .18s ease,background-color .18s ease;}
.nav-search:focus-within{border-color:var(--blue);background:#fff;}
.nav-search svg{width:17px;height:17px;color:var(--ink-3);flex:0 0 auto;}
.nav-search input{border:0;background:transparent;outline:none;font-size:14px;color:var(--ink);width:150px;}
.nav-search input::placeholder{color:var(--ink-3);}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;position:relative;cursor:pointer;flex:0 0 auto;}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:50%;width:18px;height:2px;background:var(--ink);border-radius:2px;transform:translateX(-50%);transition:transform .2s ease;}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;}
.nav-toggle span::after{content:"";top:6px;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background-color .22s ease,color .22s ease,box-shadow .22s ease,transform .22s ease,border-color .22s ease;white-space:nowrap;}
.btn:disabled{opacity:.45;cursor:not-allowed;}
.btn-accent{background:var(--orange);color:#fff;box-shadow:0 6px 16px rgba(255,107,44,.28);}
.btn-accent:hover{background:var(--orange-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 26px rgba(255,107,44,.34);}
.btn-accent:active{transform:translateY(0);}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 6px 16px rgba(31,107,240,.24);}
.btn-primary:hover{background:var(--blue-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(31,107,240,.3);}
.btn-primary:active{transform:translateY(0);background:var(--blue-active);}
.btn-ghost{border-color:var(--blue);color:var(--blue);background:transparent;}
.btn-ghost:hover{background:var(--blue-light);color:var(--blue-active);border-color:var(--blue-hover);}
.btn-light{border-color:rgba(255,255,255,.45);color:#fff;background:transparent;}
.btn-light:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--blue);font-weight:600;font-size:15px;}
.btn-text svg{width:16px;height:16px;transition:transform .2s ease;}
.btn-text:hover{color:var(--blue-active);}
.btn-text:hover svg{transform:translateX(3px);}
.nav-cta{height:40px;padding:0 20px;font-size:14px;}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:22px 0 0;font-size:13px;color:var(--ink-3);}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--blue);}
.breadcrumb .sep{color:#C4CFDF;}
.breadcrumb .current{color:var(--ink-3);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头部 ---------- */
.article-head{padding-top:20px;}
.article-cat{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--blue-light);color:var(--blue-active);font-size:13px;font-weight:600;}
.article-title{font-size:clamp(30px,4vw,46px);line-height:1.25;font-weight:700;margin:16px 0 0;letter-spacing:-.01em;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;margin-top:16px;padding-bottom:26px;border-bottom:1px solid var(--line);font-size:13px;color:var(--ink-3);}
.article-meta .mi{display:inline-flex;align-items:center;gap:6px;}
.article-meta svg{width:15px;height:15px;color:var(--ink-3);}
.article-meta .sep-dot{width:4px;height:4px;border-radius:50%;background:#C4CFDF;}

/* ---------- 头图 ---------- */
.hero-media{margin-top:26px;border-radius:var(--r-card);overflow:hidden;aspect-ratio:16/9;background:var(--bg);box-shadow:var(--sh-card);}
.hero-media img{width:100%;height:100%;object-fit:cover;}

/* ---------- 正文布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;}
.article-toc{display:none;}
@media (min-width:1280px){
    .article-toc{display:block;position:sticky;top:96px;align-self:start;}
    .article-layout{grid-template-columns:240px minmax(0,1fr);gap:56px;}
}
.toc-inner{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px 18px;box-shadow:var(--sh-card);}
.toc-title{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--ink-3);margin:0 0 12px;}
.toc-list{list-style:none;}
.toc-list li{margin-bottom:2px;}
.toc-list a{display:block;padding:8px 10px;border-left:2px solid transparent;border-radius:0 8px 8px 0;font-size:14px;color:var(--ink-2);line-height:1.5;}
.toc-list a:hover{color:var(--blue);background:var(--blue-light);border-left-color:var(--blue);}

.article-content{max-width:760px;min-width:0;}
.article-body{font-size:16px;line-height:1.85;color:var(--ink);}
.article-body h2{position:relative;font-size:28px;font-weight:600;line-height:1.35;margin:48px 0 18px;padding-left:16px;}
.article-body h2:first-child{margin-top:0;}
.article-body h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:4px;background:var(--blue);}
.article-body h3{font-size:20px;font-weight:600;margin:32px 0 14px;}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 12px;}
.article-body p{margin:0 0 18px;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;}
.article-body ul li,.article-body ol li{margin-bottom:8px;}
.article-body ul li::marker{color:var(--blue);}
.article-body blockquote{margin:24px 0;padding:18px 22px;background:var(--bg);border-left:4px solid var(--orange);border-radius:0 12px 12px 0;color:var(--ink-2);}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:24px auto;height:auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px;}
.article-body a{color:var(--blue);border-bottom:1px solid rgba(31,107,240,.35);}
.article-body a:hover{color:var(--blue-active);border-bottom-color:var(--blue-active);}
.article-body strong{font-weight:700;color:var(--ink);}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;font-variant-numeric:tabular-nums;}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;}
.article-body thead th{background:var(--blue-light);color:var(--blue-active);font-weight:600;}
.article-body tbody tr:nth-child(even){background:var(--bg);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

/* ---------- 空态 ---------- */
.empty-state{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:56px 28px;text-align:center;box-shadow:var(--sh-card);}
.empty-state svg{width:48px;height:48px;color:var(--ink-3);margin:0 auto 16px;}
.empty-state .empty-title{font-size:20px;font-weight:600;color:var(--ink);}
.empty-state .empty-sub{font-size:15px;color:var(--ink-3);margin:8px auto 22px;max-width:440px;}

/* ---------- 标签 / 返回 ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:40px;}
.tag-row .tag-label{font-size:13px;color:var(--ink-3);margin-right:2px;}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--ink-2);}
.tag:hover{border-color:var(--blue);color:var(--blue);background:var(--blue-light);}
.article-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:28px;padding-top:24px;border-top:1px solid var(--line);}
.share-row{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-3);}
.share-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink-2);}
.share-btn:hover{border-color:var(--blue);color:var(--blue);background:var(--blue-light);}
.share-btn svg{width:16px;height:16px;}

/* ---------- 相关推荐 ---------- */
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:88px 0;}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
.section-head h2{font-size:28px;font-weight:600;line-height:1.3;}
.section-head p{font-size:14px;color:var(--ink-3);margin-top:6px;}
.related-grid{margin-left:-12px;margin-right:-12px;}
.related-grid > .cell{padding:0 12px 24px;}
.rcard{display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:transform .22s ease,box-shadow .22s ease;}
.rcard:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.rcard-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg);}
.rcard-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.rcard:hover .rcard-thumb img{transform:scale(1.04);}
.rcard-body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 24px;flex:1;}
.rcard-badge{align-self:flex-start;display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--blue-light);color:var(--blue-active);font-size:12px;font-weight:600;}
.rcard h3{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rcard p{font-size:14px;line-height:1.7;color:var(--ink-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rcard-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-3);padding-top:6px;}
.rcard-foot .go{color:var(--blue);font-weight:600;display:inline-flex;align-items:center;gap:4px;}
.rcard-foot .go svg{width:14px;height:14px;}

/* ---------- CTA 条带 ---------- */
.cta-wrap{padding-bottom:88px;}
.cta-band{background:var(--dark);border-radius:var(--r-lg);padding:40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;}
.cta-band h2{color:#fff;font-size:26px;font-weight:600;line-height:1.35;}
.cta-band p{color:rgba(255,255,255,.66);font-size:15px;margin-top:8px;max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;}}
.footer-brand .brand{color:#fff;}
.footer-brand .brand:hover{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);margin-top:16px;max-width:360px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin:0 0 16px;}
.footer-col a,.footer-col span{display:block;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:10px;}
.footer-col a:hover{color:#fff;}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-top:48px;padding:22px 0;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:rgba(255,255,255,.5);}

/* ---------- 响应式导航 ---------- */
@media (max-width:1023px){
    .nav-inner{gap:12px;}
    .brand-text{font-size:16px;}
    .nav-search{display:none;}
    .nav-toggle{display:block;}
    .main-nav{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;margin:0;padding:10px 16px 18px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 20px 44px rgba(16,32,58,.14);}
    .main-nav.is-open{display:flex;}
    .nav-link{height:48px;padding:0 14px;font-size:15px;}
    .nav-link::after{display:none;}
    .nav-link.is-active{background:var(--blue-light);border-radius:8px;}
    .nav-cta{height:38px;padding:0 16px;font-size:13px;}
}
@media (max-width:767px){
    .topbar-note{display:none;}
    .topbar-right a:not(.topbar-btn){display:none;}
    .topbar-right{gap:10px;}
}
@media (max-width:639px){
    .article-body h2{font-size:23px;margin-top:36px;}
    .article-body h3{font-size:18px;}
    .section-head{flex-direction:column;align-items:flex-start;}
    .cta-band{padding:28px 22px;}
    .cta-band h2{font-size:21px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1 1 auto;}
    .breadcrumb .current{max-width:180px;}
}

/* roulang page: category1 */
:root{
  --brand:#1F6BF0;
  --brand-hover:#1857C9;
  --brand-light:#E8F0FE;
  --brand-active:#1449A6;
  --accent:#FF6B2C;
  --accent-hover:#E85A1F;
  --green:#0F9D6B;
  --danger:#E5484D;
  --ink:#10203A;
  --ink-2:#4A5A75;
  --ink-3:#7C8AA3;
  --line:#E3E9F2;
  --page:#F6F8FC;
  --card:#FFFFFF;
  --dark:#0C1A2E;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:999px;
  --r-block:20px;
  --sh-1:0 2px 8px rgba(16,32,58,.06), 0 12px 32px rgba(16,32,58,.06);
  --sh-2:0 4px 14px rgba(16,32,58,.10), 0 18px 44px rgba(16,32,58,.10);
  --font-cn:-apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .22s ease}
a:hover{color:var(--brand-hover)}
button{font-family:inherit;font-size:inherit;background:none;border:0;color:inherit;cursor:pointer;padding:0}
input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{list-style:none;padding:0}
:focus-visible{outline:3px solid rgba(31,107,240,.45);outline-offset:2px;border-radius:4px}
h1{font-size:clamp(30px,4vw,46px);line-height:1.25;font-weight:700}
h2{font-size:28px;line-height:1.35;font-weight:600;margin:0 0 14px}
h3{font-size:20px;line-height:1.45;font-weight:600;margin:0 0 10px}
.rw-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){ .rw-container{padding:0 32px} }
@media(min-width:1280px){ .rw-container{max-width:1280px} }

/* 顶部信息条 */
.topbar{background:var(--dark);color:rgba(255,255,255,.72);font-size:13px;min-height:38px;display:flex;align-items:center}
.topbar .rw-container{display:flex;align-items:center;justify-content:space-between;gap:18px}
.topbar-left{display:flex;align-items:center;gap:10px;white-space:nowrap;overflow:hidden}
.topbar-left .tb-domain{color:#fff;font-weight:600;letter-spacing:.2px}
.topbar-left .tb-dot{width:4px;height:4px;border-radius:50%;background:var(--accent);flex:none}
.topbar-left .tb-hint{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar-right{display:flex;align-items:center;gap:18px;flex:none}
.topbar-right a{color:rgba(255,255,255,.78)}
.topbar-right a:hover{color:#fff}
.topbar-cta{border:1px solid var(--brand);color:#fff !important;border-radius:var(--r-badge);padding:2px 12px;font-size:12px;line-height:1.6;transition:background-color .22s ease}
.topbar-cta:hover{background:var(--brand-active)}
@media(max-width:767px){
  .topbar-hide{display:none}
}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .22s ease}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(16,32,58,.08)}
.nav-inner{display:flex;align-items:center;gap:22px;height:72px;transition:height .22s ease}
.site-header.is-scrolled .nav-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;flex:none}
.brand:hover{color:var(--ink)}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:13px;font-weight:700;letter-spacing:.5px;font-family:Inter,system-ui,sans-serif}
.brand-text{font-size:17px;letter-spacing:.2px}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:6px}
.nav-link{position:relative;padding:10px 14px;font-size:15px;font-weight:500;color:var(--ink-2);border-radius:8px;transition:color .22s ease,background-color .22s ease}
.nav-link::after{content:"";position:absolute;left:50%;right:50%;bottom:3px;height:2px;background:var(--brand);border-radius:2px;transition:left .22s ease,right .22s ease}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{left:14px;right:14px}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{left:14px;right:14px}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-search{display:flex;align-items:center;gap:8px;height:40px;min-width:232px;padding:0 12px;background:var(--page);border:1px solid var(--line);border-radius:var(--r-input);transition:border-color .22s ease,box-shadow .22s ease}
.nav-search svg{width:18px;height:18px;color:var(--ink-3);flex:none}
.nav-search input{width:100%;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink)}
.nav-search input::placeholder{color:var(--ink-3)}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,107,240,.16)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);position:relative;background:#fff}
.nav-toggle span,.nav-toggle span::before{position:absolute;left:50%;width:18px;height:2px;background:var(--ink);border-radius:2px;transform:translateX(-50%);transition:transform .22s ease}
.nav-toggle span{top:19px}
.nav-toggle span::before{content:"";top:6px;left:0;transform:none}
.nav-toggle[aria-expanded="true"] span{transform:translateX(-50%) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(-6px) rotate(-90deg)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background-color .22s ease,color .22s ease,box-shadow .22s ease,transform .22s ease,border-color .22s ease;white-space:nowrap}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(255,107,44,.22)}
.btn-accent:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,107,44,.30)}
.btn-accent:active{transform:translateY(0);box-shadow:0 4px 12px rgba(255,107,44,.24)}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent}
.btn-outline:hover{background:var(--brand-light);color:var(--brand-hover);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(0)}
.btn-white{background:#fff;color:var(--dark)}
.btn-white:hover{background:#EAF1FF;color:var(--dark);transform:translateY(-1px)}
.btn-ghost-light{border-color:rgba(255,255,255,.55);color:#fff;background:transparent}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-1px)}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px}
.btn-text svg{width:16px;height:16px;transition:transform .22s ease}
.btn-text:hover{color:var(--brand-hover)}
.btn-text:hover svg{transform:translateX(3px)}
.nav-cta{height:40px;padding:0 20px;font-size:14px}

/* 面包屑 */
.breadcrumb{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-3);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:var(--ink-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#C3CEDD}
.breadcrumb .current{color:var(--ink-2)}

/* 页面横幅 */
.page-hero{position:relative;overflow:hidden;background-image:url("/assets/images/backpic/back-1.webp");background-size:cover;background-position:center;display:flex;align-items:center;min-height:300px;padding:56px 0}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(246,248,252,.97) 0%,rgba(255,255,255,.88) 52%,rgba(255,255,255,.62) 100%)}
.page-hero > .rw-container{position:relative;z-index:1}
.page-hero-inner{max-width:760px}
.pill{display:inline-flex;align-items:center;gap:6px;background:var(--brand-light);color:var(--brand-active);font-size:13px;font-weight:600;padding:5px 14px;border-radius:var(--r-badge);margin-bottom:16px}
.pill .pill-dot{width:6px;height:6px;border-radius:50%;background:var(--green)}
.lede{font-size:17px;line-height:1.8;color:var(--ink-2);margin:0 0 26px;max-width:700px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}

/* 板块 */
.section{padding:88px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head p{color:var(--ink-2);font-size:16px;margin-top:6px}
.section-head--bar{padding-left:18px;border-left:4px solid var(--brand)}
.eyebrow{font-family:Inter,system-ui,sans-serif;font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--brand);margin-bottom:10px}
.alt-bg{background:#fff}

/* 图文交替 */
.zigzag-item{margin-bottom:76px}
.zigzag-item:last-child{margin-bottom:0}
.media-frame{position:relative;aspect-ratio:16/10;border-radius:var(--r-block);overflow:hidden;background:var(--brand-light);box-shadow:var(--sh-1)}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-badge{position:absolute;left:16px;bottom:16px;display:inline-flex;align-items:center;gap:6px;background:rgba(12,26,46,.74);color:#fff;font-size:12px;padding:5px 12px;border-radius:var(--r-badge);backdrop-filter:blur(2px)}
.media-badge svg{width:14px;height:14px}
.z-body p{color:var(--ink-2);margin-bottom:16px}
.z-body p:last-child{margin-bottom:0}
.z-list{margin:0 0 22px}
.z-list li{position:relative;padding-left:26px;margin-bottom:10px;font-size:15px;color:var(--ink-2)}
.z-list li::before{content:"";position:absolute;left:2px;top:7px;width:6px;height:11px;border-right:2px solid var(--green);border-bottom:2px solid var(--green);transform:rotate(45deg)}
.z-link{margin-top:22px}

/* 要点卡 */
.point-cards .cell{margin-bottom:24px}
.point-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease}
.point-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#D3E0F7}
.point-card .pc-tag{display:inline-block;font-size:12px;font-weight:600;color:var(--brand-active);background:var(--brand-light);border-radius:var(--r-badge);padding:3px 12px;margin-bottom:14px}
.point-card h3{margin-bottom:8px}
.point-card p{font-size:15px;color:var(--ink-2);margin:0}
.point-card .pc-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3);display:flex;justify-content:space-between;align-items:center;gap:12px}

/* 数据条带 */
.stat-strip{background:var(--dark);border-radius:var(--r-block);padding:44px 36px;color:#fff}
.stat-strip h2{color:#fff;font-size:22px;margin-bottom:8px}
.stat-strip .strip-note{color:rgba(255,255,255,.66);font-size:14px;margin-bottom:28px}
.stat{padding:6px 0}
.stat-num{font-family:Inter,system-ui,sans-serif;font-size:28px;font-weight:700;color:#8AB6FF;font-variant-numeric:tabular-nums;line-height:1.3}
.stat-label{font-size:13px;color:rgba(255,255,255,.66);margin-top:4px}
.stat + .stat{border-top:1px solid rgba(255,255,255,.10);margin-top:16px;padding-top:16px}
@media(min-width:640px){
  .stat + .stat{border-top:0;margin-top:0;padding-top:6px}
}

/* 内链区 */
.inner-card{display:flex;flex-direction:column;justify-content:space-between;gap:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:30px;box-shadow:var(--sh-1);transition:box-shadow .22s ease,transform .22s ease;height:100%}
.inner-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.inner-card p{font-size:15px;color:var(--ink-2);margin:0}
.inner-card .ic-top{margin-bottom:6px}

/* CTA 条带 */
.cta-inner{background:var(--dark);border-radius:var(--r-block);padding:44px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-inner h2{color:#fff;margin-bottom:8px;font-size:26px}
.cta-inner p{color:rgba(255,255,255,.68);font-size:15px;max-width:560px;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* 页脚 */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:88px;padding:64px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand .brand{color:#fff;margin-bottom:14px}
.footer-brand .brand:hover{color:#fff}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px;margin:0}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-col a,.footer-col span{display:block;color:rgba(255,255,255,.72);font-size:14px;margin-bottom:10px;line-height:1.6}
.footer-col a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;font-size:13px;color:rgba(255,255,255,.52)}

/* 响应式 */
@media(max-width:1023px){
  .nav-search{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:84vw;max-width:340px;
    background:#fff;flex-direction:column;align-items:stretch;gap:2px;
    padding:80px 20px 28px;margin-left:0;
    box-shadow:-14px 0 44px rgba(16,32,58,.18);
    transform:translateX(100%);transition:transform .26s ease;z-index:70;overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-link{display:flex;align-items:center;min-height:48px;padding:12px 12px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0}
  .nav-link::after{display:none}
  .nav-link.is-active{background:var(--brand-light);border-radius:10px;border-bottom-color:transparent}
  .nav-cta{padding:0 16px}
  .section{padding:60px 0}
  .zigzag-item{margin-bottom:56px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media(max-width:639px){
  .page-hero{min-height:0;padding:40px 0}
  .cta-inner{padding:32px 22px}
  .stat-strip{padding:32px 22px}
  .point-card{padding:22px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .btn{width:100%}
  .hero-actions{width:100%}
  .hero-actions .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --brand:#1F6BF0;
  --brand-hover:#1857C9;
  --brand-active:#1449A6;
  --brand-light:#E8F0FE;
  --accent:#FF6B2C;
  --accent-hover:#E85A1F;
  --green:#0F9D6B;
  --red:#E5484D;
  --ink:#10203A;
  --ink-2:#4A5A75;
  --ink-3:#7C8AA3;
  --line:#E3E9F2;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --dark:#0C1A2E;
  --r-card:16px;
  --r-btn:10px;
  --r-badge:999px;
  --r-block:20px;
  --sh-card:0 2px 8px rgba(16,32,58,.06), 0 12px 32px rgba(16,32,58,.06);
  --sh-hover:0 4px 14px rgba(16,32,58,.10), 0 18px 44px rgba(16,32,58,.10);
  --tr:.22s ease;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--tr);}
a:hover{color:var(--brand-hover);}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(31,107,240,.38);outline-offset:2px;border-radius:6px;}
::selection{background:var(--brand-light);color:var(--ink);}

.rw-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.rw-container{padding:0 32px;}}
@media (min-width:1280px){.rw-container{max-width:1280px;}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--dark);color:rgba(255,255,255,.82);font-size:13px;line-height:38px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.02em;}
.topbar-tip{color:rgba(255,255,255,.62);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-right{display:flex;align-items:center;gap:18px;}
.topbar-hot{color:rgba(255,255,255,.72);}
.topbar-login{color:rgba(255,255,255,.82);}
.topbar-login:hover{color:#fff;}
@media (max-width:767px){
  .topbar-tip,.topbar-hot,.topbar-login{display:none;}
}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--tr),height var(--tr);
}
.nav-inner{display:flex;align-items:center;gap:26px;height:72px;transition:height var(--tr);}
.site-header.is-shrink{box-shadow:0 6px 20px rgba(16,32,58,.08);}
.site-header.is-shrink .nav-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),#4A8BFF);
  color:#fff;font-size:13px;font-weight:700;letter-spacing:.04em;
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;flex:1 1 auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:40px;padding:0 14px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;color:var(--ink-2);
  white-space:nowrap;transition:color var(--tr),background var(--tr);
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:4px;height:2px;
  background:var(--brand);border-radius:2px;transition:left var(--tr),right var(--tr);
}
.nav-link:hover{color:var(--brand);background:var(--brand-light);}
.nav-link:hover::after{left:14px;right:14px;}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{left:14px;right:14px;}
.nav-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--bg);transition:border-color var(--tr),background var(--tr);
}
.nav-search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(31,107,240,.12);}
.nav-search svg{width:17px;height:17px;color:var(--ink-3);flex:0 0 auto;}
.nav-search input{
  border:0;background:transparent;outline:none;font-size:14px;color:var(--ink);
  width:168px;font-family:inherit;
}
.nav-search input::placeholder{color:var(--ink-3);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--ink);
  transition:background var(--tr);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.nav-toggle:hover{border-color:var(--brand);}
@media (max-width:1023px){
  .nav-search{display:none;}
  .main-nav{display:none;}
  .nav-toggle{display:block;}
  .nav-actions{margin-left:auto;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border:1px solid transparent;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background var(--tr),color var(--tr),box-shadow var(--tr),transform var(--tr),border-color var(--tr);
}
.btn:active{transform:translateY(0);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 4px 12px rgba(255,107,44,.24);}
.btn-accent:hover{background:var(--accent-hover);color:#fff;box-shadow:0 8px 20px rgba(255,107,44,.30);transform:translateY(-1px);}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 12px rgba(31,107,240,.22);}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(31,107,240,.28);}
.btn-outline{border-color:rgba(31,107,240,.55);color:var(--brand);background:transparent;}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-light);color:var(--brand-hover);transform:translateY(-1px);}
.btn-outline-light{border-color:rgba(255,255,255,.5);color:#fff;background:transparent;}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.12);color:#fff;}
.btn-ghost-line{border-color:rgba(255,255,255,.42);color:#fff;background:transparent;height:26px;padding:0 14px;font-size:13px;border-radius:8px;}
.btn-ghost-line:hover{border-color:#fff;background:rgba(255,255,255,.14);color:#fff;}
.btn-text{color:var(--brand);font-weight:600;background:none;border:0;padding:0;height:auto;}
.btn-text:hover{color:var(--brand-hover);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;}

/* ---------- 面包屑 ---------- */
.crumb{font-size:13px;color:var(--ink-3);padding:18px 0 0;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--line);}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--brand);}
.crumb .current{color:var(--ink-3);}

/* ---------- 分类页 Hero（纯色浅底） ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--brand-light);
  padding:48px 0 40px;
  margin-top:18px;
  border-radius:var(--r-block);
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(31,107,240,.16),rgba(31,107,240,0) 68%);
  pointer-events:none;
}
.page-hero-inner{position:relative;z-index:2;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 14px;border-radius:var(--r-badge);
  background:#fff;color:var(--brand);font-size:13px;font-weight:600;
}
.hero-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;}
.page-hero h1{
  margin-top:18px;
  font-size:clamp(30px,4vw,46px);
  line-height:1.25;font-weight:700;letter-spacing:-.01em;color:var(--ink);
}
.hero-lead{
  margin-top:16px;max-width:760px;
  font-size:17px;line-height:1.85;color:var(--ink-2);
}
.anchor-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.anchor-nav a{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;
  background:#fff;border:1px solid rgba(31,107,240,.18);border-radius:var(--r-badge);
  font-size:14px;font-weight:500;color:var(--ink-2);
  transition:all var(--tr);
}
.anchor-nav a:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-1px);box-shadow:0 6px 16px rgba(16,32,58,.08);}

/* ---------- 文档式布局 ---------- */
.doc-section{padding:64px 0 88px;}
@media (min-width:1024px){.doc-section{padding:88px 0 104px;}}
.doc-layout{margin-top:0;}
.doc-toc{display:none;}
@media (min-width:1024px){
  .doc-toc{display:block;}
  .doc-toc .toc-card{
    position:sticky;top:96px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    padding:22px 20px;box-shadow:var(--sh-card);
  }
}
.toc-title{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--ink-3);text-transform:uppercase;}
.toc-list{margin-top:14px;display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:8px;
  font-size:14px;color:var(--ink-2);
  border-left:2px solid transparent;
  transition:all var(--tr);
}
.toc-list a:hover{background:var(--brand-light);color:var(--brand);}
.toc-list a.is-current{color:var(--brand);font-weight:600;background:var(--brand-light);border-left-color:var(--brand);}
.toc-list em{font-style:normal;font-size:12px;color:var(--ink-3);}
.doc-body{max-width:860px;}
@media (min-width:1024px){.doc-body{max-width:none;}}

.sec{padding-bottom:64px;border-bottom:1px solid var(--line);margin-bottom:64px;}
.sec:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.sec-eyebrow{
  display:flex;align-items:center;gap:10px;
  font-size:13px;font-weight:600;color:var(--brand);
}
.sec-eyebrow b{
  font-variant-numeric:tabular-nums;
  background:var(--brand-light);color:var(--brand);
  border-radius:6px;padding:2px 8px;font-size:12px;letter-spacing:.06em;
}
.sec h2{
  margin-top:12px;
  font-size:28px;font-weight:600;line-height:1.4;color:var(--ink);
}
.sec-title-bar{padding-left:16px;border-left:4px solid var(--brand);}
.sec h3{margin-top:28px;font-size:20px;font-weight:600;color:var(--ink);}
.sec p{margin-top:16px;font-size:16px;line-height:1.85;color:var(--ink-2);}
.sec p strong{color:var(--ink);}

.bullet-list{margin-top:22px;display:grid;gap:12px;}
.bullet-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 18px;background:#fff;border:1px solid var(--line);border-radius:12px;
  font-size:15px;color:var(--ink-2);line-height:1.7;
  transition:box-shadow var(--tr),transform var(--tr);
}
.bullet-list li:hover{box-shadow:var(--sh-card);transform:translateY(-2px);}
.check{flex:0 0 auto;width:20px;height:20px;margin-top:2px;color:var(--green);}
.check svg{width:20px;height:20px;}

.figure-row{margin-top:28px;}
.figure-card{
  overflow:hidden;border-radius:var(--r-card);background:#fff;
  border:1px solid var(--line);box-shadow:var(--sh-card);
}
.figure-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.figure-card figcaption{padding:14px 18px;font-size:13px;color:var(--ink-3);}

/* ---------- 等级时间轴 ---------- */
.timeline{position:relative;margin-top:28px;padding-left:34px;}
.timeline::before{content:"";position:absolute;left:11px;top:8px;bottom:8px;width:2px;background:var(--line);}
.tier-item{position:relative;padding:0 0 26px;}
.tier-item:last-child{padding-bottom:0;}
.tier-item::before{
  content:"";position:absolute;left:-30px;top:8px;width:12px;height:12px;border-radius:50%;
  background:#fff;border:2px solid var(--brand);
}
.tier-num{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--brand);font-variant-numeric:tabular-nums;
}
.tier-card{
  margin-top:8px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sh-card);
  transition:box-shadow var(--tr),transform var(--tr);
}
.tier-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);}
.tier-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px;}
.tier-name{font-size:19px;font-weight:600;color:var(--ink);}
.tier-price{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;}
.tier-card p{margin-top:10px;font-size:15px;color:var(--ink-2);line-height:1.8;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-badge);font-size:12.5px;font-weight:500;
  background:var(--brand-light);color:var(--brand-hover);
}
.tag-accent{background:#FFF0E8;color:var(--accent-hover);}
.tag-green{background:#E7F7F1;color:#0B7E55;}

/* ---------- 对比表 ---------- */
.cmp-wrap{margin-top:26px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;}
.cmp-table{width:100%;border-collapse:collapse;font-size:15px;}
.cmp-table caption{
  caption-side:top;text-align:left;padding:20px 22px 8px;
  font-size:13px;color:var(--ink-3);
}
.cmp-table th,.cmp-table td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--line);}
.cmp-table thead th{
  position:sticky;top:0;z-index:3;
  background:#F2F6FD;color:var(--ink);
  font-size:14px;font-weight:600;white-space:nowrap;
}
.cmp-table tbody th{
  position:sticky;left:0;z-index:2;
  background:#fff;font-weight:600;color:var(--ink);white-space:nowrap;
}
.cmp-table tbody tr:nth-child(even) th,
.cmp-table tbody tr:nth-child(even) td{background:var(--bg);}
.cmp-table tbody tr:hover th,
.cmp-table tbody tr:hover td{background:var(--brand-light);}
.cmp-table td{color:var(--ink-2);font-variant-numeric:tabular-nums;}
.cmp-table .col-recommend{position:relative;background:#FFF9F5;}
.cmp-table thead .col-recommend::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--accent);
}
.cmp-table tbody .col-recommend{background:#FFFBF8;}
.rec-badge{
  display:inline-flex;align-items:center;height:20px;padding:0 9px;margin-right:8px;
  background:var(--accent);color:#fff;border-radius:var(--r-badge);font-size:11.5px;font-weight:600;
}
.cell-yes{color:var(--green);font-weight:600;}
.cell-no{color:var(--ink-3);}
.cell-yes svg{width:16px;height:16px;vertical-align:-3px;margin-right:6px;}
@media (max-width:639px){
  .cmp-table caption{padding:18px 18px 4px;}
  .cmp-table thead{display:none;}
  .cmp-table,.cmp-table tbody,.cmp-table tr,.cmp-table th,.cmp-table td{display:block;width:100%;}
  .cmp-table{background:transparent;}
  .cmp-table tbody tr{
    background:#fff;border:1px solid var(--line);border-radius:14px;
    margin:0 14px 14px;padding:8px 6px;overflow:hidden;
  }
  .cmp-table tbody th{
    position:static;background:transparent;padding:14px 14px 10px;
    font-size:16px;border-bottom:1px solid var(--line);
  }
  .cmp-table tbody td{
    display:flex;justify-content:space-between;gap:14px;
    padding:10px 14px;border-bottom:0;background:transparent;
  }
  .cmp-table tbody tr:nth-child(even) th,
  .cmp-table tbody tr:nth-child(even) td{background:transparent;}
  .cmp-table tbody td::before{
    content:attr(data-label);color:var(--ink);font-weight:600;flex:0 0 auto;
  }
  .cmp-table tbody .col-recommend{background:transparent;}
}

/* ---------- 步骤 ---------- */
.steps{margin-top:26px;display:grid;gap:16px;}
@media (min-width:768px){.steps{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr);}}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 22px;box-shadow:var(--sh-card);
  transition:box-shadow var(--tr),transform var(--tr);
}
.step:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);}
.step-num{
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);
  font-variant-numeric:tabular-nums;
}
.step h3{margin-top:10px;font-size:17px;font-weight:600;color:var(--ink);}
.step p{margin-top:8px;font-size:14.5px;line-height:1.75;color:var(--ink-2);}

/* ---------- 不等宽双栏 ---------- */
.feature-split{margin-top:28px;}
.feature-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-card);height:100%;
}
.feature-media img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;}
.feature-media .media-badge{
  position:absolute;right:16px;bottom:16px;
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;border-radius:var(--r-badge);
  background:rgba(12,26,46,.82);color:#fff;font-size:13px;font-weight:500;
}
.feature-media .media-badge svg{width:15px;height:15px;}
.feature-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:8px 20px;}
.fl-item{display:flex;align-items:flex-start;gap:16px;padding:20px 0;border-bottom:1px solid var(--line);}
.fl-item:last-child{border-bottom:0;}
.fl-item h3{font-size:16px;font-weight:600;color:var(--ink);transition:color var(--tr);}
.fl-item a:hover h3{color:var(--brand);}
.fl-meta{font-size:13px;color:var(--ink-3);margin-top:6px;font-variant-numeric:tabular-nums;}
.fl-arrow{margin-left:auto;color:var(--ink-3);flex:0 0 auto;transition:transform var(--tr),color var(--tr);}
.fl-item a:hover .fl-arrow{color:var(--brand);transform:translateX(3px);}
.fl-arrow svg{width:18px;height:18px;}

/* ---------- FAQ ---------- */
.faq-acc{margin-top:26px;border:0;background:transparent;}
.faq-acc .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;
  overflow:hidden;transition:box-shadow var(--tr);
}
.faq-acc .accordion-item:hover{box-shadow:var(--sh-card);}
.faq-acc .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:17px;font-weight:600;color:var(--ink);
  border:0;background:#fff;transition:background var(--tr),color var(--tr);
}
.faq-acc .accordion-title:hover,
.faq-acc .accordion-title:focus{background:#F7FAFF;color:var(--brand);}
.faq-acc .accordion-title::before{content:none;}
.faq-acc .faq-icon{position:relative;width:16px;height:16px;flex:0 0 auto;}
.faq-acc .faq-icon::before,
.faq-acc .faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform var(--tr),opacity var(--tr);
}
.faq-acc .faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-acc .faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-acc .accordion-item.is-active .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-acc .accordion-content{
  padding:0 22px 20px;background:var(--bg);
  font-size:15px;line-height:1.85;color:var(--ink-2);border-top:1px solid var(--line);
}
.faq-acc .accordion-content p{padding-top:18px;margin:0;}
#faq .accordion-content{display:none;}
#faq .accordion-item.is-active .accordion-content{display:block;}

/* ---------- 要点汇总 ---------- */
.summary-box{
  margin-top:26px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 26px;box-shadow:var(--sh-card);
}
.summary-box ol{display:grid;gap:14px;}
.summary-box li{display:flex;gap:14px;align-items:flex-start;font-size:15px;color:var(--ink-2);line-height:1.8;}
.summary-box li b{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--brand-light);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12.5px;font-weight:700;font-variant-numeric:tabular-nums;
}
.link-row{margin-top:24px;display:flex;flex-wrap:wrap;gap:12px;}
.link-pill{
  display:inline-flex;align-items:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  background:#fff;border:1px solid var(--line);color:var(--ink-2);
  font-size:14.5px;font-weight:500;transition:all var(--tr);
}
.link-pill:hover{border-color:var(--brand);color:var(--brand);box-shadow:var(--sh-card);transform:translateY(-1px);}
.link-pill svg{width:16px;height:16px;}

/* ---------- CTA 条带 ---------- */
.cta-band-wrap{padding-bottom:88px;}
.cta-band{
  background:var(--dark);border-radius:var(--r-block);
  padding:44px 40px;color:#fff;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
}
.cta-band h2{font-size:26px;font-weight:600;color:#fff;line-height:1.4;}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.72);max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
@media (max-width:639px){
  .cta-band{padding:32px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 26px;}
.footer-grid{display:grid;gap:36px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;}}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col a,.footer-col span{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0;transition:color var(--tr);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.58);
}

/* ---------- 移动端抽屉 ---------- */
.m-drawer{position:fixed;inset:0;z-index:90;visibility:hidden;pointer-events:none;}
.m-drawer.is-open{visibility:visible;pointer-events:auto;}
.m-drawer-mask{position:absolute;inset:0;background:rgba(12,26,46,.5);opacity:0;transition:opacity var(--tr);}
.m-drawer.is-open .m-drawer-mask{opacity:1;}
.m-drawer-panel{
  position:absolute;left:0;top:0;bottom:0;width:84vw;max-width:360px;
  background:#fff;padding:20px;overflow-y:auto;
  transform:translateX(-100%);transition:transform var(--tr);
  display:flex;flex-direction:column;gap:10px;
}
.m-drawer.is-open .m-drawer-panel{transform:translateX(0);}
.m-drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.m-drawer-close{
  width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;cursor:pointer;font-size:18px;color:var(--ink-2);line-height:1;
}
.m-drawer-close:hover{border-color:var(--brand);color:var(--brand);}
.m-drawer-nav{display:flex;flex-direction:column;margin:8px 0;}
.m-drawer-nav a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:10px;
  font-size:15px;color:var(--ink-2);
}
.m-drawer-nav a:hover,.m-drawer-nav a.is-active{background:var(--brand-light);color:var(--brand);font-weight:600;}
.m-drawer-note{margin-top:auto;font-size:13px;color:var(--ink-3);line-height:1.7;padding-top:18px;}