/* roulang page: index */
:root{
  --c-primary:#1B63E0;
  --c-primary-dark:#1450BC;
  --c-primary-soft:#EEF4FF;
  --c-accent:#17C3A2;
  --c-warn:#FF7A2F;
  --c-ink:#101828;
  --c-body:#475467;
  --c-muted:#98A2B3;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F6F8FC;
  --c-border:#E4E9F2;
  --c-shadow-sm:0 1px 2px rgba(16,24,40,.06);
  --c-shadow-md:0 8px 24px rgba(16,24,40,.07);
  --c-shadow-hover:0 12px 32px rgba(27,99,224,.14);
  --radius-lg:14px;
  --radius-md:12px;
  --radius-btn:10px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --container:1200px;
  --header-h:72px;
  --ease:.22s ease;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:130px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{color:var(--c-ink);margin:0 0 .6em;font-weight:700;line-height:1.35;letter-spacing:.2px;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--c-primary-dark);text-decoration:underline;}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}

/* ---------- Foundation 覆盖 ---------- */
.grid-x.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-x.grid-margin-x > .cell{padding-left:12px;padding-right:12px;}
.button{font-family:var(--font-sans);}
.accordion,.accordion-item,.accordion-title,.accordion-content{background:transparent;border:none;margin:0;padding:0;}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:900;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--c-border);box-shadow:0 4px 18px rgba(16,24,40,.06);}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  height:var(--header-h);
}
.nav-side{display:flex;align-items:center;gap:4px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--c-body);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft);text-decoration:none;}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  justify-self:center;white-space:nowrap;
  color:var(--c-ink);font-weight:700;font-size:17px;letter-spacing:.3px;
}
.brand:hover{text-decoration:none;color:var(--c-ink);}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--c-primary),#3D82F5);
  color:#fff;font-size:16px;font-weight:700;box-shadow:var(--c-shadow-sm);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background-color var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(27,99,224,.22);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;text-decoration:none;transform:translateY(-1px);}
.btn-outline{background:#fff;color:var(--c-primary);border-color:rgba(27,99,224,.4);}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);text-decoration:none;border-color:var(--c-primary);}
.btn-ghost{background:transparent;color:var(--c-primary);padding:12px 4px;}
.btn-ghost i{transition:transform var(--ease);}
.btn-ghost:hover{color:var(--c-primary-dark);text-decoration:none;}
.btn-ghost:hover i{transform:translateX(3px);}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{
  outline:none;box-shadow:0 0 0 3px rgba(27,99,224,.2);
}
.nav-cta{margin-left:8px;}
.menu-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--c-border);border-radius:10px;color:var(--c-ink);
  font-size:16px;cursor:pointer;transition:background-color var(--ease);
}
.menu-toggle:hover{background:var(--c-primary-soft);}

/* 锚点导航条 */
.anchor-bar{border-top:1px solid var(--c-border);background:#fff;}
.anchor-inner{display:flex;align-items:center;gap:6px;height:44px;overflow-x:auto;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-link{
  position:relative;flex:0 0 auto;
  padding:6px 12px;font-size:14px;color:var(--c-body);border-radius:8px;
}
.anchor-link:hover{color:var(--c-primary);background:var(--c-primary-soft);text-decoration:none;}
.anchor-link.is-active{color:var(--c-primary);font-weight:600;background:var(--c-primary-soft);}
.anchor-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--c-primary);
}

/* 移动端面板 */
.mobile-panel{
  position:fixed;left:0;right:0;top:60px;z-index:880;
  background:#fff;border-bottom:1px solid var(--c-border);
  box-shadow:var(--c-shadow-md);
  padding:14px 20px 22px;
  transform:translateY(-14px);opacity:0;visibility:hidden;
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.mobile-panel.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.mobile-panel a.mobile-link{
  display:block;padding:13px 14px;font-size:16px;color:var(--c-ink);
  border-radius:10px;border-bottom:1px solid var(--c-border);
}
.mobile-panel a.mobile-link:last-of-type{border-bottom:none;}
.mobile-panel a.mobile-link:hover{background:var(--c-primary-soft);color:var(--c-primary);text-decoration:none;}
.mobile-panel .btn{width:100%;margin-top:14px;}
.overlay{
  position:fixed;inset:60px 0 0 0;background:rgba(16,24,40,.4);z-index:870;
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.overlay.is-open{opacity:1;visibility:visible;}

/* ---------- 通用板块 ---------- */
.section{padding:104px 0;}
.section-alt{background:var(--c-bg-alt);}
.section-head{max-width:760px;margin:0 auto 56px;text-align:center;}
.section-head.left{margin-left:0;text-align:left;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.section-title{font-size:clamp(24px,3vw,34px);line-height:1.25;margin-bottom:14px;}
.section-sub{font-size:16px;color:var(--c-body);margin:0;}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;}
.head-row .section-title{margin-bottom:6px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:660px;
  display:flex;align-items:center;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.86) 46%,rgba(238,244,255,.72) 100%);
}
.hero-inner{position:relative;z-index:2;width:100%;padding:88px 0;}
.hero h1{
  font-size:clamp(30px,4.4vw,50px);
  line-height:1.2;
  margin-bottom:18px;
  letter-spacing:.4px;
}
.hero-lead{font-size:18px;line-height:1.75;color:var(--c-body);max-width:520px;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.trust-badges{display:flex;flex-wrap:wrap;gap:10px;}
.trust-badge{
  display:inline-flex;align-items:center;gap:7px;
  background:rgba(255,255,255,.9);border:1px solid var(--c-border);
  border-radius:999px;padding:7px 15px;font-size:13px;color:var(--c-body);
  box-shadow:var(--c-shadow-sm);
}
.trust-badge i{color:var(--c-accent);font-size:12px;}
.hero-visual{position:relative;}
.hero-shot{
  border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--c-border);box-shadow:var(--c-shadow-md);background:#fff;
}
.hero-shot img{width:100%;height:auto;transition:transform var(--ease);}
.hero-shot:hover img{transform:scale(1.03);}
.hero-float{
  position:absolute;left:-18px;bottom:26px;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-md);
  box-shadow:var(--c-shadow-md);padding:14px 18px;display:flex;align-items:center;gap:12px;
}
.hero-float .dot{width:9px;height:9px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 4px rgba(23,195,162,.16);}
.hero-float strong{display:block;color:var(--c-ink);font-size:15px;line-height:1.4;}
.hero-float span{font-size:12px;color:var(--c-muted);}

/* ---------- 卖点区 ---------- */
.adv-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--c-shadow-md);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  height:100%;
}
.adv-card:hover{transform:translateY(-3px);box-shadow:var(--c-shadow-hover);border-color:rgba(27,99,224,.3);}
.adv-icon{
  width:48px;height:48px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:20px;margin-bottom:16px;
}
.adv-icon.green{background:rgba(23,195,162,.12);color:var(--c-accent);}
.adv-icon.orange{background:rgba(255,122,47,.12);color:var(--c-warn);}
.adv-card h3{font-size:19px;margin-bottom:10px;}
.adv-card p{font-size:15px;color:var(--c-body);margin-bottom:0;}
.adv-tall{
  background:linear-gradient(160deg,#fff 0%,var(--c-primary-soft) 100%);
  border:1px solid var(--c-border);border-radius:var(--radius-lg);
  padding:32px;box-shadow:var(--c-shadow-md);height:100%;
  display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease);
}
.adv-tall:hover{transform:translateY(-3px);box-shadow:var(--c-shadow-hover);}
.adv-tall .adv-shot{border-radius:var(--radius-md);overflow:hidden;margin:20px 0 18px;border:1px solid rgba(27,99,224,.14);}
.adv-tall .adv-shot img{width:100%;transition:transform var(--ease);}
.adv-tall .adv-shot:hover img{transform:scale(1.03);}
.adv-list{margin-top:6px;}
.adv-list li{display:flex;gap:10px;font-size:14px;color:var(--c-body);padding:5px 0;}
.adv-list li i{color:var(--c-accent);margin-top:5px;font-size:12px;}
.grid-gap > .cell{margin-bottom:24px;}

/* ---------- 演示区 ---------- */
.demo-frame{
  position:relative;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--radius-lg);box-shadow:var(--c-shadow-md);overflow:hidden;
}
.demo-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;background:var(--c-bg-alt);border-bottom:1px solid var(--c-border);}
.demo-bar span{width:10px;height:10px;border-radius:50%;background:#D7DEEA;}
.demo-bar span:nth-child(1){background:#FF7A6B;}
.demo-bar span:nth-child(2){background:#FFC46B;}
.demo-bar span:nth-child(3){background:#5ED3A9;}
.demo-frame img{width:100%;}
.steps{position:relative;padding-left:6px;}
.step{position:relative;padding:0 0 30px 60px;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:19px;top:42px;bottom:0;width:2px;
  background:linear-gradient(to bottom,var(--c-primary),rgba(27,99,224,.1));
}
.step:last-child::before{display:none;}
.step-num{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary);color:#fff;font-weight:700;font-size:16px;
  box-shadow:0 6px 14px rgba(27,99,224,.24);
}
.step h3{font-size:18px;margin-bottom:6px;}
.step p{font-size:15px;margin-bottom:0;}

/* ---------- 证据区 ---------- */
.stats{list-style:none;padding:0;margin:0;}
.stat{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-md);
  padding:22px;box-shadow:var(--c-shadow-sm);height:100%;
}
.stat strong{display:block;font-size:32px;line-height:1.1;color:var(--c-primary);font-weight:700;letter-spacing:.5px;}
.stat span{display:block;font-size:14px;color:var(--c-muted);margin-top:8px;}
.quote-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--c-shadow-md);height:100%;
  transition:transform var(--ease),box-shadow var(--ease);
}
.quote-card:hover{transform:translateY(-3px);box-shadow:var(--c-shadow-hover);}
.quote-mark{font-size:26px;color:var(--c-primary);opacity:.35;line-height:1;margin-bottom:10px;}
.quote-card p{font-size:15px;color:var(--c-body);}
.quote-meta{display:flex;align-items:center;gap:10px;margin-top:16px;padding-top:16px;border-top:1px solid var(--c-border);}
.quote-avatar{
  width:36px;height:36px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;flex:0 0 36px;
}
.quote-meta b{display:block;font-size:14px;color:var(--c-ink);line-height:1.5;}
.quote-meta span{font-size:12px;color:var(--c-muted);}
.logo-wall{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:8px;}
.logo-chip{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--c-border);border-radius:var(--radius-md);
  background:#fff;padding:10px 16px;font-size:13px;color:var(--c-muted);
  filter:grayscale(1);transition:filter var(--ease),color var(--ease),border-color var(--ease),transform var(--ease);
}
.logo-chip i{font-size:14px;}
.logo-chip:hover{filter:grayscale(0);color:var(--c-primary);border-color:rgba(27,99,224,.3);transform:translateY(-2px);}

/* ---------- 卡片 / 新闻 ---------- */
.card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-lg);
  box-shadow:var(--c-shadow-md);overflow:hidden;height:100%;
  display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--c-shadow-hover);border-color:rgba(27,99,224,.3);}
.card-thumb{position:relative;display:block;overflow:hidden;aspect-ratio:16/9;background:var(--c-bg-alt);}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
.card:hover .card-thumb img{transform:scale(1.03);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.card-meta{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:25px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.badge-green{background:rgba(23,195,162,.13);color:#0E8F78;}
.badge-orange{background:rgba(255,122,47,.13);color:#C4551B;}
.badge-gray{background:var(--c-bg-alt);color:var(--c-muted);}
.badge-on-thumb{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);box-shadow:var(--c-shadow-sm);}
.card-time{font-size:13px;color:var(--c-muted);}
.card-title{
  font-size:17px;line-height:1.5;margin-bottom:10px;color:var(--c-ink);font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-title a{color:inherit;}
.card-title a:hover{color:var(--c-primary);text-decoration:none;}
.card-desc{
  font-size:14px;color:var(--c-body);line-height:1.7;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;}
.card-foot .read{font-size:14px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;}
.card-foot .read i{transition:transform var(--ease);}
.card:hover .card-foot .read i{transform:translateX(3px);}
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--c-border);
  border-radius:var(--radius-lg);background:#fff;min-height:240px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
}
.empty-art{
  width:78px;height:78px;border-radius:22px;
  background:linear-gradient(135deg,var(--c-primary-soft),#fff);
  border:1px solid var(--c-border);display:flex;align-items:center;justify-content:center;
  color:var(--c-primary);font-size:28px;
}
.empty-state p{font-size:15px;color:var(--c-body);margin:0;}

/* ---------- 价格 ---------- */
.price-card{
  position:relative;background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-lg);
  padding:30px 26px;box-shadow:var(--c-shadow-md);height:100%;display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.price-card:hover{transform:translateY(-3px);box-shadow:var(--c-shadow-hover);}
.price-card.featured{
  border-color:var(--c-primary);
  box-shadow:0 16px 40px rgba(27,99,224,.16);
  transform:scale(1.02);
}
.price-card.featured:hover{transform:scale(1.02) translateY(-3px);}
.price-tag{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  background:var(--c-warn);color:#fff;font-size:12px;font-weight:600;
  padding:4px 14px;border-radius:999px;white-space:nowrap;
  box-shadow:0 6px 14px rgba(255,122,47,.28);
}
.price-name{font-size:18px;font-weight:700;color:var(--c-ink);margin-bottom:6px;}
.price-amount{display:flex;align-items:baseline;gap:6px;margin-bottom:8px;}
.price-amount b{font-size:36px;line-height:1;color:var(--c-primary);font-weight:700;}
.price-amount span{font-size:14px;color:var(--c-muted);}
.price-note{font-size:14px;color:var(--c-body);margin-bottom:20px;padding-bottom:20px;border-bottom:1px solid var(--c-border);}
.price-list{margin-bottom:26px;}
.price-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--c-body);padding:6px 0;}
.price-list li i{color:var(--c-accent);font-size:12px;margin-top:6px;}
.price-card .btn{width:100%;margin-top:auto;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-md);
  margin-bottom:12px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:rgba(27,99,224,.3);}
.faq-item.is-open{box-shadow:var(--c-shadow-md);border-color:rgba(27,99,224,.35);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:18px 20px;background:transparent;border:none;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;
}
.faq-q:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(27,99,224,.2);}
.faq-q .q-icon{
  width:26px;height:26px;flex:0 0 26px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
}
.faq-q .q-text{flex:1;}
.faq-q .q-arrow{color:var(--c-muted);font-size:14px;transition:transform .25s ease,color var(--ease);}
.faq-item.is-open .q-arrow{transform:rotate(180deg);color:var(--c-primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
.faq-a-inner{
  background:var(--c-bg-alt);padding:16px 20px 18px 60px;
  font-size:15px;color:var(--c-body);line-height:1.8;border-top:1px solid var(--c-border);
}

/* ---------- 底部转化带 ---------- */
.cta-band{
  background:linear-gradient(120deg,#F4F8FF 0%,#EAF1FF 100%);
  border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border);
  padding:80px 0;
}
.cta-band h2{font-size:clamp(24px,3vw,32px);margin-bottom:12px;}
.cta-band p{font-size:16px;color:var(--c-body);margin-bottom:26px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;align-items:center;}
.cta-contact{display:flex;flex-wrap:wrap;gap:22px;margin-top:24px;font-size:14px;color:var(--c-body);}
.cta-contact span{display:inline-flex;align-items:center;gap:8px;}
.cta-contact i{color:var(--c-primary);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:#C3CBDB;padding:72px 0 0;}
.site-footer h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:18px;letter-spacing:.4px;}
.site-footer a{color:#C3CBDB;font-size:14px;line-height:2;display:inline-block;}
.site-footer a:hover{color:#fff;text-decoration:none;}
.footer-brand .brand{color:#fff;margin-bottom:16px;justify-self:flex-start;}
.footer-brand .brand:hover{color:#fff;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand p{font-size:14px;line-height:1.9;color:#98A2B3;margin-bottom:0;max-width:320px;}
.footer-links li{line-height:1.4;}
.footer-contact li{display:flex;gap:10px;font-size:14px;line-height:2;color:#C3CBDB;}
.footer-contact i{color:var(--c-primary);margin-top:9px;font-size:13px;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:#8A93A6;
}
.footer-bottom a{font-size:13px;color:#8A93A6;}
.footer-bottom a:hover{color:#fff;}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:28px;z-index:800;
  display:inline-flex;align-items:center;gap:9px;
  background:var(--c-primary);color:#fff;font-size:14px;font-weight:600;
  padding:13px 22px;border-radius:999px;
  box-shadow:0 12px 28px rgba(27,99,224,.32);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease),background-color var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--c-primary-dark);color:#fff;text-decoration:none;}
.float-cta i{font-size:15px;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 28px;}
}
@media (max-width:1023px){
  :root{--header-h:60px;}
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .header-inner{display:flex;justify-content:center;position:relative;}
  .nav-left,.nav-right{display:none;}
  .menu-toggle{display:inline-flex;position:absolute;left:0;top:50%;transform:translateY(-50%);}
  .brand{font-size:16px;}
  .brand-mark{width:30px;height:30px;flex:0 0 30px;font-size:14px;}
  .anchor-bar{display:none;}
  .hero{min-height:auto;}
  .hero-inner{padding:60px 0 72px;}
  .hero-lead{font-size:17px;margin-bottom:26px;}
  .hero-visual{margin-top:44px;}
  .hero-float{left:12px;bottom:14px;}
  .head-row{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px;}
  .price-card.featured{transform:none;}
  .price-card.featured:hover{transform:translateY(-3px);}
  .cta-band{padding:64px 0;}
  .site-footer{padding:56px 0 0;}
}
@media (max-width:767px){
  :root{--header-h:60px;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:36px;}
  .hero h1{font-size:clamp(27px,7.4vw,34px);}
  .hero-actions{gap:12px;}
  .hero-actions .btn{flex:1 1 auto;}
  .stat strong{font-size:26px;}
  .faq-a-inner{padding-left:20px;}
  .float-cta{padding:0;width:56px;height:56px;justify-content:center;right:16px;bottom:20px;}
  .float-cta .float-text{display:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:479px){
  .brand{font-size:15px;}
  .brand-mark{width:28px;height:28px;flex:0 0 28px;font-size:13px;}
  .hero-lead{font-size:16px;}
  .trust-badge{font-size:12px;padding:6px 12px;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: article */
:root{
  --c-primary:#1B63E0;
  --c-primary-dark:#1450BC;
  --c-primary-soft:#EEF4FF;
  --c-accent:#17C3A2;
  --c-warn:#FF7A2F;
  --c-ink:#101828;
  --c-body:#475467;
  --c-muted:#98A2B3;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F6F8FC;
  --c-border:#E4E9F2;
  --c-shadow-sm:0 1px 2px rgba(16,24,40,.06);
  --c-shadow-md:0 8px 24px rgba(16,24,40,.07);
  --c-shadow-hover:0 12px 32px rgba(27,99,224,.14);
  --radius-lg:14px;
  --radius-md:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --header-h:72px;
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --sp-6:64px;
  --sp-7:96px;
  --font-base:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Inter",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%}

body{
  margin:0;
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .22s ease}
a:hover{color:var(--c-primary-dark);text-decoration:underline}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid rgba(27,99,224,.22);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;letter-spacing:.2px}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:900;
  background:rgba(255,255,255,.95);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--c-border);
  box-shadow:0 4px 18px rgba(16,24,40,.06);
}
.header-inner{
  height:var(--header-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-3);
}
.nav-side{
  display:flex;
  align-items:center;
  gap:4px;
  flex:1 1 0;
  min-width:0;
}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--c-ink);
  border-radius:8px;
  white-space:nowrap;
  transition:color .22s ease,background-color .22s ease;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft);text-decoration:none}
.nav-link.is-active{color:var(--c-primary)}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:1px;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  text-decoration:none;
  white-space:nowrap;
}
.brand:hover{text-decoration:none}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;height:36px;
  border-radius:11px;
  background:linear-gradient(135deg,var(--c-primary),#4A8AF0);
  color:#fff;
  font-size:17px;
  font-weight:700;
  box-shadow:0 6px 16px rgba(27,99,224,.24);
}
.brand-text{
  font-size:18px;
  font-weight:700;
  color:var(--c-ink);
  letter-spacing:.3px;
}
.header-cta{
  margin-left:8px;
  flex:0 0 auto;
}
.mobile-toggle{
  display:none;
  width:42px;height:42px;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  border:1px solid var(--c-border);
  background:#fff;
  color:var(--c-ink);
  font-size:17px;
}
.mobile-panel{
  position:fixed;
  top:var(--header-h);
  left:0;right:0;
  z-index:880;
  background:#fff;
  border-bottom:1px solid var(--c-border);
  box-shadow:0 18px 36px rgba(16,24,40,.12);
  padding:var(--sp-2) 24px var(--sp-3);
  transform:translateY(-14px);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transition:transform .26s ease,opacity .26s ease,visibility .26s ease;
}
.mobile-panel.is-open{
  transform:translateY(0);
  opacity:1;
  visibility:visible;
  pointer-events:auto;
}
.mobile-panel .nav-link{
  display:block;
  padding:13px 12px;
  font-size:16px;
  border-bottom:1px solid var(--c-border);
  border-radius:0;
}
.mobile-panel .nav-link.is-active::after{display:none}
.mobile-panel .nav-link:last-of-type{border-bottom:none}
.mobile-panel .btn{width:100%;margin-top:16px;justify-content:center}
.nav-overlay{
  position:fixed;
  inset:var(--header-h) 0 0 0;
  background:rgba(16,24,40,.4);
  opacity:0;
  visibility:hidden;
  z-index:870;
  transition:opacity .26s ease,visibility .26s ease;
}
.nav-overlay.is-open{opacity:1;visibility:visible}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 20px rgba(27,99,224,.22)}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff}
.btn-outline{background:#fff;color:var(--c-primary);border-color:rgba(27,99,224,.42)}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary)}
.btn-ghost{
  padding:6px 0;
  color:var(--c-primary);
  font-weight:600;
}
.btn-ghost i{transition:transform .22s ease}
.btn-ghost:hover{color:var(--c-primary-dark);background:none;text-decoration:none}
.btn-ghost:hover i{transform:translateX(3px)}
.btn-sm{padding:9px 18px;font-size:14px}

/* ============ Badges & tags ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:25px;
  padding:0 10px;
  border-radius:var(--radius-pill);
  font-size:12.5px;
  font-weight:600;
  background:var(--c-primary-soft);
  color:var(--c-primary);
}
.badge-accent{background:rgba(23,195,162,.12);color:#0E8E77}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-block;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  background:var(--c-bg-alt);
  border:1px solid var(--c-border);
  color:var(--c-body);
  font-size:13.5px;
  transition:background-color .22s ease,border-color .22s ease,color .22s ease;
}
.tag:hover{background:var(--c-primary-soft);border-color:rgba(27,99,224,.3);color:var(--c-primary);text-decoration:none}

/* ============ Article head ============ */
.article-hero{
  background:linear-gradient(180deg,var(--c-bg-alt) 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--c-border);
  padding:36px 0 40px;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--c-muted);
  margin-bottom:20px;
}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary);text-decoration:none}
.breadcrumb .sep{color:#C7D0DE}
.breadcrumb .current{color:var(--c-muted);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{
  font-size:clamp(26px,3.4vw,40px);
  line-height:1.3;
  font-weight:700;
  max-width:900px;
  margin-bottom:18px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--c-muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C7D0DE;display:inline-block}
.article-meta em{font-style:normal;color:var(--c-body);font-weight:600}

/* ============ Layout ============ */
.article-wrap{padding:56px 0 72px;background:var(--c-bg)}
.article-grid{display:flex;align-items:flex-start;gap:40px}
.article-main{flex:1 1 auto;min-width:0;max-width:780px}
.article-aside{flex:0 0 300px;max-width:300px;position:sticky;top:96px}

/* ============ Article body ============ */
.article-body{
  font-size:17px;
  line-height:1.85;
  color:var(--c-body);
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.1em}
.article-body h2{
  position:relative;
  font-size:24px;
  line-height:1.4;
  font-weight:700;
  margin:1.9em 0 .8em;
  padding-left:16px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.18em;
  width:3px;height:1em;
  border-radius:3px;
  background:var(--c-primary);
}
.article-body h3{
  position:relative;
  font-size:19px;
  line-height:1.45;
  font-weight:600;
  margin:1.6em 0 .6em;
  padding-left:14px;
}
.article-body h3::before{
  content:"";
  position:absolute;
  left:0;top:.22em;
  width:3px;height:.9em;
  border-radius:3px;
  background:rgba(27,99,224,.45);
}
.article-body h4{font-size:17px;margin:1.4em 0 .5em}
.article-body img{
  border-radius:var(--radius-md);
  margin:1.4em auto;
  max-width:100%;
  height:auto;
  overflow:hidden;
}
.article-body figure{margin:1.6em 0}
.article-body figcaption{
  font-size:13px;
  color:var(--c-muted);
  text-align:center;
  margin-top:10px;
}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:4px}
.article-body ul li,.article-body ol li{
  position:relative;
  padding-left:22px;
  margin-bottom:.5em;
  line-height:1.85;
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:4px;top:.72em;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--c-primary);
  opacity:.75;
}
.article-body ol{counter-reset:olc}
.article-body ol li{counter-increment:olc;padding-left:30px}
.article-body ol li::before{
  content:counter(olc);
  position:absolute;
  left:0;top:.28em;
  width:20px;height:20px;
  border-radius:6px;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:12.5px;
  font-weight:700;
  line-height:20px;
  text-align:center;
}
.article-body blockquote{
  margin:1.6em 0;
  padding:18px 22px;
  background:var(--c-bg-alt);
  border-left:3px solid var(--c-primary);
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  color:var(--c-body);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{font-weight:500}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:15px;
  display:block;
  overflow-x:auto;
  border:1px solid var(--c-border);
  border-radius:var(--radius-md);
}
.article-body table th,.article-body table td{
  padding:11px 14px;
  border-bottom:1px solid var(--c-border);
  text-align:left;
  white-space:nowrap;
}
.article-body table th{background:var(--c-bg-alt);color:var(--c-ink);font-weight:600}
.article-body table tr:last-child td{border-bottom:none}
.article-body pre{
  margin:1.6em 0;
  padding:18px 20px;
  background:#0F172A;
  color:#E2E8F0;
  border-radius:var(--radius-md);
  font-size:14px;
  line-height:1.7;
  overflow-x:auto;
}
.article-body code{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  font-size:.92em;
  background:var(--c-bg-alt);
  border:1px solid var(--c-border);
  border-radius:6px;
  padding:1px 6px;
  color:var(--c-primary-dark);
}
.article-body pre code{background:none;border:none;color:inherit;padding:0}
.article-body hr{border:none;border-top:1px solid var(--c-border);margin:2em 0}

/* ============ Empty state ============ */
.article-empty{
  min-height:280px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  gap:14px;
  padding:48px 24px;
  background:var(--c-bg-alt);
  border:1px dashed var(--c-border);
  border-radius:var(--radius-lg);
}
.empty-figure{
  width:96px;height:76px;
  border-radius:16px;
  background:linear-gradient(135deg,rgba(27,99,224,.14),rgba(23,195,162,.16));
  position:relative;
}
.empty-figure::after{
  content:"";
  position:absolute;
  left:22px;right:22px;bottom:20px;
  height:5px;
  border-radius:4px;
  background:rgba(27,99,224,.32);
  box-shadow:0 -12px 0 rgba(27,99,224,.2),0 -24px 0 rgba(27,99,224,.12);
}
.article-empty p{font-size:15px;color:var(--c-body);margin:0}

/* ============ Article footer blocks ============ */
.article-footer{margin-top:44px;padding-top:32px;border-top:1px solid var(--c-border)}
.block-title-sm{
  font-size:15px;
  font-weight:700;
  color:var(--c-ink);
  margin-bottom:14px;
  display:flex;
  align-items:center;
  gap:8px;
}
.block-title-sm i{color:var(--c-primary)}
.article-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}

/* ============ Aside ============ */
.aside-panel{
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  background:#fff;
  box-shadow:var(--c-shadow-sm);
  overflow:hidden;
}
.aside-panel summary{
  list-style:none;
  padding:16px 20px;
  font-size:15px;
  font-weight:700;
  color:var(--c-ink);
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.aside-panel summary::-webkit-details-marker{display:none}
.aside-panel summary::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:12px;
  color:var(--c-muted);
  transition:transform .25s ease;
}
.aside-panel[open] summary::after{transform:rotate(180deg)}
.aside-inner{padding:0 20px 22px}
.aside-block + .aside-block{margin-top:26px;padding-top:22px;border-top:1px solid var(--c-border)}
.aside-heading{
  font-size:13.5px;
  font-weight:700;
  color:var(--c-ink);
  letter-spacing:.4px;
  margin-bottom:12px;
}
.toc-list li{margin-bottom:8px}
.toc-list a{
  display:block;
  font-size:14px;
  line-height:1.6;
  color:var(--c-body);
  padding-left:12px;
  position:relative;
}
.toc-list a::before{
  content:"";
  position:absolute;
  left:0;top:.62em;
  width:5px;height:5px;
  border-radius:50%;
  background:#C7D0DE;
  transition:background-color .22s ease;
}
.toc-list a:hover{color:var(--c-primary);text-decoration:none}
.toc-list a:hover::before{background:var(--c-primary)}
.aside-links li{margin-bottom:10px}
.aside-links a{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--c-body);
  padding:10px 12px;
  border-radius:10px;
  background:var(--c-bg-alt);
  transition:background-color .22s ease,color .22s ease,transform .22s ease;
}
.aside-links a i{color:var(--c-primary);font-size:13px}
.aside-links a:hover{
  background:var(--c-primary-soft);
  color:var(--c-primary);
  text-decoration:none;
  transform:translateX(2px);
}
.aside-note{
  font-size:13.5px;
  color:var(--c-muted);
  line-height:1.7;
  background:rgba(23,195,162,.08);
  border-radius:10px;
  padding:14px 16px;
}

/* ============ Related cards ============ */
.section{padding:var(--sp-7) 0}
.section-alt{background:var(--c-bg-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3}
.section-head p{margin:8px 0 0;font-size:15px;color:var(--c-body)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  box-shadow:var(--c-shadow-md);
  overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{
  transform:translateY(-3px);
  box-shadow:var(--c-shadow-hover);
  border-color:rgba(27,99,224,.3);
}
.card-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--c-bg-alt);
}
.card-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  border-radius:0;
  transition:transform .3s ease;
}
.card:hover .card-thumb img{transform:scale(1.03)}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1 1 auto}
.card-meta{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--c-muted);
  margin-bottom:12px;
}
.card-title{
  font-size:18px;
  font-weight:600;
  line-height:1.45;
  color:var(--c-ink);
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-title a{color:inherit}
.card-title a:hover{color:var(--c-primary);text-decoration:none}
.card-excerpt{
  font-size:14.5px;
  line-height:1.7;
  color:var(--c-body);
  margin-bottom:18px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between}

/* ============ CTA band ============ */
.cta-band{
  background:linear-gradient(135deg,#1B63E0 0%,#3A80EE 100%);
  color:#fff;
  padding:72px 0;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-120px;top:-120px;
  width:340px;height:340px;
  border-radius:50%;
  background:rgba(255,255,255,.08);
}
.cta-inner{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.8vw,32px);line-height:1.3;margin-bottom:10px}
.cta-inner p{color:rgba(255,255,255,.86);font-size:15.5px;margin:0}
.cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.btn-white{background:#fff;color:var(--c-primary-dark)}
.btn-white:hover{background:#F2F6FF;color:var(--c-primary-dark)}
.cta-contact{font-size:14.5px;color:rgba(255,255,255,.9)}
.cta-contact a{color:#fff;text-decoration:underline}

/* ============ Footer ============ */
.site-footer{
  background:#0F172A;
  color:#C6CEDA;
  padding:64px 0 0;
  font-size:14px;
}
.site-footer h4{
  color:#fff;
  font-size:14px;
  font-weight:700;
  letter-spacing:.5px;
  margin-bottom:18px;
}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-mark{background:linear-gradient(135deg,#2C74F0,#5B9BFF)}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  line-height:1.85;
  color:#93A0B4;
  max-width:340px;
}
.footer-links li{margin-bottom:11px}
.footer-links a{color:#C6CEDA;font-size:14px}
.footer-links a:hover{color:#fff;text-decoration:none}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  margin-bottom:13px;
  color:#C6CEDA;
}
.footer-contact i{color:#5B9BFF;margin-top:4px;font-size:14px}
.grid-gap{padding-bottom:40px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#8390A4;
}

/* ============ Floating CTA ============ */
.float-cta{
  position:fixed;
  right:26px;
  bottom:26px;
  z-index:800;
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:13px 22px;
  border-radius:var(--radius-pill);
  background:var(--c-primary);
  color:#fff;
  font-size:14px;
  font-weight:600;
  box-shadow:0 14px 30px rgba(27,99,224,.3);
  opacity:0;
  visibility:hidden;
  transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease,background-color .22s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{background:var(--c-primary-dark);color:#fff;text-decoration:none}
.float-cta i{font-size:15px}

/* ============ Responsive ============ */
@media screen and (max-width:1279px){
  .article-aside{flex:0 0 280px;max-width:280px}
  .article-grid{gap:32px}
}

@media screen and (max-width:1023px){
  .nav-side,.header-cta{display:none}
  .mobile-toggle{display:inline-flex}
  .header-inner{height:60px}
  :root{--header-h:60px}
  .container{padding:0 24px}
  .section{padding:72px 0}
  .article-grid{flex-direction:column;gap:40px}
  .article-aside{
    position:static;
    flex:1 1 auto;
    max-width:100%;
    width:100%;
  }
  .article-main{max-width:100%}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{padding:56px 0}
  .grid-gap{padding-bottom:32px}
}

@media screen and (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 20px}
  .brand-text{font-size:16px}
  .brand-mark{width:32px;height:32px;font-size:15px;border-radius:10px}
  .article-hero{padding:26px 0 30px}
  .article-wrap{padding:36px 0 56px}
  .article-body{font-size:16px;line-height:1.8}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:26px}
  .card-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .float-cta{
    right:18px;bottom:18px;
    width:56px;height:56px;
    padding:0;
    justify-content:center;
    border-radius:50%;
  }
  .float-cta span{display:none}
  .float-cta i{font-size:19px}
}

@media screen and (max-width:479px){
  .article-title{font-size:23px}
  .btn{padding:11px 20px;font-size:14.5px}
  .article-actions .btn{width:100%}
}

/* roulang page: category1 */
:root{
  --c-primary:#1B63E0;
  --c-primary-dark:#1450BC;
  --c-primary-soft:#EEF4FF;
  --c-accent:#17C3A2;
  --c-warn:#FF7A2F;
  --c-ink:#101828;
  --c-body:#475467;
  --c-muted:#98A2B3;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F6F8FC;
  --c-border:#E4E9F2;
  --c-shadow-sm:0 1px 2px rgba(16,24,40,.06);
  --c-shadow-md:0 8px 24px rgba(16,24,40,.07);
  --c-shadow-hover:0 12px 32px rgba(27,99,224,.14);

  --radius-lg:14px;
  --radius-md:12px;
  --radius-sm:10px;
  --radius-pill:999px;

  --sp-1:8px;
  --sp-2:12px;
  --sp-3:16px;
  --sp-4:22px;
  --sp-5:28px;
  --sp-6:40px;
  --sp-7:56px;
  --sp-8:96px;

  --container:1200px;
  --header-h:72px;

  --fs-h1:clamp(30px,4.4vw,50px);
  --fs-h2:clamp(24px,3vw,34px);
  --fs-h3:20px;
  --fs-body:16px;
  --fs-sm:14px;
  --fs-xs:13px;

  --ease:.22s ease;
}

/* ========== 基础 ========== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:100px}
body{
  margin:0;
  padding-top:var(--header-h);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:var(--fs-body);
  line-height:1.8;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;border-radius:var(--radius-md)}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--c-primary-dark);text-decoration:underline}
button{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.28}
h1{font-size:var(--fs-h1)}
h2{font-size:var(--fs-h2)}
h3{font-size:var(--fs-h3);font-weight:600;line-height:1.4}
h4{font-size:var(--fs-sm);font-weight:700}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(27,99,224,.25);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}

/* ========== 顶部导航 ========== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:var(--header-h);
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid transparent;
  transition:box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--c-border);box-shadow:var(--c-shadow-sm)}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  height:var(--header-h);
  gap:var(--sp-3);
}
.brand{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:var(--radius-sm);
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-dark));
  color:#fff;font-weight:700;font-size:17px;
}
.brand-text{color:var(--c-ink);font-size:17px;font-weight:700;letter-spacing:.2px}
.brand:hover .brand-text{color:var(--c-primary-dark)}

.nav-side{display:flex;align-items:center;gap:var(--sp-5);min-width:0}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end}
.nav-link{
  position:relative;
  padding:8px 2px;
  color:var(--c-body);
  font-size:15px;
  font-weight:500;
  white-space:nowrap;
}
.nav-link:hover{color:var(--c-primary-dark);text-decoration:none}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:center;transition:transform var(--ease);
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}

.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:var(--radius-sm);
  background:var(--c-primary);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 6px 16px rgba(27,99,224,.22);
  transition:background var(--ease),transform var(--ease);
}
.nav-cta:hover{background:var(--c-primary-dark);color:#fff;text-decoration:none;transform:translateY(-1px)}

.menu-btn{
  display:none;
  width:42px;height:42px;border-radius:var(--radius-sm);
  border:1px solid var(--c-border);background:#fff;color:var(--c-ink);
  font-size:17px;cursor:pointer;
}
.mobile-toggle{display:none}
.mobile-brand{display:none}

.nav-overlay{
  position:fixed;inset:var(--header-h) 0 0 0;background:rgba(16,24,40,.4);
  opacity:0;visibility:hidden;transition:opacity var(--ease);z-index:55;
}
.nav-overlay.is-open{opacity:1;visibility:visible}

.mobile-panel{
  position:fixed;top:var(--header-h);left:0;right:0;z-index:58;
  background:#fff;border-bottom:1px solid var(--c-border);
  padding:12px 20px 22px;
  transform:translateY(-12px);opacity:0;visibility:hidden;
  transition:all var(--ease);
  max-height:calc(100vh - var(--header-h));overflow-y:auto;
}
.mobile-panel.is-open{transform:translateY(0);opacity:1;visibility:visible}
.mobile-panel a{
  display:block;padding:14px 4px;font-size:16px;color:var(--c-ink);
  border-bottom:1px solid var(--c-border);font-weight:500;
}
.mobile-panel a:hover{text-decoration:none;color:var(--c-primary)}
.mobile-panel a.is-active{color:var(--c-primary);font-weight:600}
.mobile-panel .mobile-cta{
  margin-top:16px;border-bottom:0;text-align:center;
  background:var(--c-primary);color:#fff;border-radius:var(--radius-sm);font-weight:600;
}
.mobile-panel .mobile-cta:hover{background:var(--c-primary-dark);color:#fff}

/* ========== 通用按钮 / 徽章 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-sm);
  font-size:16px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 20px rgba(27,99,224,.2)}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;text-decoration:none;transform:translateY(-1px)}
.btn-outline{background:#fff;color:var(--c-primary);border-color:rgba(27,99,224,.45)}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);text-decoration:none}
.btn-ghost{background:transparent;color:var(--c-primary);padding:13px 6px}
.btn-ghost i{transition:transform var(--ease)}
.btn-ghost:hover{text-decoration:none;color:var(--c-primary-dark)}
.btn-ghost:hover i{transform:translateX(3px)}
.btn-sm{padding:10px 18px;font-size:14px}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 10px;border-radius:var(--radius-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:var(--fs-xs);font-weight:600;line-height:1;
}
.badge-accent{background:rgba(23,195,162,.12);color:#0F9E84}
.badge-warn{background:rgba(255,122,47,.12);color:#D9601D}

/* ========== 分类横幅 ========== */
.cat-hero{
  position:relative;
  padding:64px 0 60px;
  background:var(--c-bg-alt);
  border-bottom:1px solid var(--c-border);
  overflow:hidden;
  min-height:240px;
  display:flex;align-items:center;
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  opacity:.16;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(246,248,252,.96) 0%,rgba(246,248,252,.82) 55%,rgba(246,248,252,.62) 100%);
}
.cat-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:var(--fs-xs);color:var(--c-muted);margin-bottom:16px;
}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary);text-decoration:none}
.breadcrumb .sep{color:#C6CEDB}
.breadcrumb .current{color:#7A8699}
.cat-hero h1{max-width:900px;margin-bottom:14px}
.cat-hero-sub{font-size:17px;color:var(--c-body);max-width:720px;margin:0}

/* ========== 板块 ========== */
.section{padding:var(--sp-8) 0}
.section-alt{background:var(--c-bg-alt)}
.section-head{max-width:760px;margin-bottom:var(--sp-6)}
.section-head h2{position:relative;padding-left:16px;margin-bottom:14px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;
  border-radius:4px;background:var(--c-primary);
}
.section-head p{margin:0;color:var(--c-body)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:var(--fs-xs);font-weight:600;color:var(--c-primary);
  letter-spacing:.4px;margin-bottom:12px;
}

/* ========== 左图右文 ========== */
.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:var(--sp-7);align-items:start}
.split-media{position:sticky;top:104px}
.media-frame{
  border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--c-border);box-shadow:var(--c-shadow-md);background:#fff;
}
.media-frame img{width:100%;border-radius:0;transition:transform .35s ease}
.media-frame:hover img{transform:scale(1.03)}
.media-caption{font-size:var(--fs-xs);color:var(--c-muted);margin:12px 2px 0;text-align:center}
.split-body h2{margin-bottom:18px}
.split-body p{margin-bottom:1.1em}
.mini-list{margin-top:var(--sp-5);display:grid;gap:14px}
.mini-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 16px;border:1px solid var(--c-border);border-radius:var(--radius-md);
  background:#fff;box-shadow:var(--c-shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.mini-list li:hover{transform:translateY(-3px);box-shadow:var(--c-shadow-hover);border-color:rgba(27,99,224,.3)}
.mini-list i{color:var(--c-primary);margin-top:4px}
.mini-list strong{display:block;color:var(--c-ink);font-size:15px;font-weight:600}
.mini-list span{font-size:var(--fs-sm);color:var(--c-body)}

/* ========== 准备要点卡 ========== */
.prep-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.prep-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--c-shadow-md);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.prep-card:hover{transform:translateY(-3px);box-shadow:var(--c-shadow-hover);border-color:rgba(27,99,224,.3)}
.prep-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--radius-md);
  background:var(--c-primary-soft);color:var(--c-primary);font-size:18px;margin-bottom:16px;
}
.prep-card h3{margin-bottom:10px}
.prep-card p{margin:0;font-size:15px;color:var(--c-body)}

/* ========== 对照 ========== */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.compare-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--c-shadow-md);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.compare-card:hover{transform:translateY(-3px);box-shadow:var(--c-shadow-hover);border-color:rgba(27,99,224,.3)}
.compare-card.is-featured{border-color:rgba(27,99,224,.45);background:linear-gradient(180deg,var(--c-primary-soft),#fff 46%)}
.compare-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.compare-card h3{font-size:19px}
.compare-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:10px 0;border-bottom:1px dashed var(--c-border);font-size:15px;
}
.compare-list li:last-child{border-bottom:0}
.compare-list i{color:var(--c-accent);margin-top:4px}
.compare-list .muted i{color:var(--c-muted)}

/* ========== 流程步骤 ========== */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;counter-reset:step}
.step-item{
  position:relative;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-lg);
  padding:28px 24px 24px;box-shadow:var(--c-shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step-item::before{
  counter-increment:step;content:counter(step);
  position:absolute;top:-18px;left:24px;
  width:36px;height:36px;border-radius:var(--radius-pill);
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary);color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 6px 16px rgba(27,99,224,.24);
}
.step-item:hover{transform:translateY(-3px);box-shadow:var(--c-shadow-hover);border-color:rgba(27,99,224,.3)}
.step-item h3{font-size:17px;margin:14px 0 8px}
.step-item p{margin:0;font-size:var(--fs-sm);color:var(--c-body)}

/* ========== FAQ ========== */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{
  border:1px solid var(--c-border);border-radius:var(--radius-md);
  background:#fff;margin-bottom:12px;overflow:hidden;
  box-shadow:var(--c-shadow-sm);transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:rgba(27,99,224,.3);box-shadow:var(--c-shadow-md)}
.faq-item.is-open{border-color:rgba(27,99,224,.4);box-shadow:var(--c-shadow-md)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:18px 20px;background:transparent;border:0;text-align:left;cursor:pointer;
  color:var(--c-ink);font-size:16px;font-weight:600;
}
.faq-q .q-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:var(--radius-pill);
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:13px;font-weight:700;
}
.faq-q .q-text{flex:1 1 auto}
.faq-q .q-arrow{color:var(--c-muted);transition:transform var(--ease)}
.faq-item.is-open .q-arrow{transform:rotate(180deg);color:var(--c-primary)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .25s ease;
  background:var(--c-bg-alt);
}
.faq-a p{margin:0;padding:16px 20px 20px 60px;font-size:15px;color:var(--c-body)}

/* ========== 底部转化带 ========== */
.cta-band{
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-dark));
  color:#fff;padding:var(--sp-7) 0;
}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--sp-5)}
.cta-band h2{color:#fff;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.9);margin:0}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px}
.cta-band .btn-primary{background:#fff;color:var(--c-primary);box-shadow:0 10px 24px rgba(9,32,76,.25)}
.cta-band .btn-primary:hover{background:#F2F6FF;color:var(--c-primary-dark)}
.cta-contact{display:flex;flex-wrap:wrap;gap:18px;margin-top:14px;font-size:var(--fs-sm);color:rgba(255,255,255,.92)}
.cta-contact span{display:inline-flex;align-items:center;gap:8px}

/* ========== 页脚 ========== */
.site-footer{
  background:var(--c-ink);color:#C6CEDB;padding:var(--sp-7) 0 0;
}
.site-footer h4{color:#fff;margin-bottom:18px;font-size:var(--fs-sm)}
.site-footer .grid-gap{gap:0}
.footer-brand .brand-text{color:#fff}
.footer-brand p{margin-top:16px;font-size:var(--fs-sm);color:#98A2B3;max-width:340px}
.footer-links li,.footer-contact li{line-height:2;font-size:var(--fs-sm)}
.footer-links a{color:#C6CEDB}
.footer-links a:hover{color:#fff;text-decoration:none}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;color:#C6CEDB}
.footer-contact i{color:var(--c-primary);margin-top:6px}
.footer-bottom{
  margin-top:var(--sp-6);border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:var(--fs-xs);color:#8B95A7;
}

/* ========== 浮动 CTA ========== */
.float-cta{
  position:fixed;right:26px;bottom:28px;z-index:50;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 22px;border-radius:var(--radius-pill);
  background:var(--c-primary);color:#fff;font-size:var(--fs-sm);font-weight:600;
  box-shadow:0 12px 28px rgba(27,99,224,.32);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease),background var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{background:var(--c-primary-dark);color:#fff;text-decoration:none}

/* ========== 响应式 ========== */
@media screen and (max-width:1279px){
  .container{padding:0 28px}
  .nav-side{gap:var(--sp-4)}
}

@media screen and (max-width:1023px){
  :root{--header-h:60px}
  body{font-size:15.5px}
  .container{padding:0 24px}
  .section{padding:72px 0}
  .nav-side{display:none}
  .header-inner{grid-template-columns:1fr auto 1fr}
  .desktop-brand{display:none}
  .mobile-brand{display:inline-flex;grid-column:2}
  .menu-btn{display:inline-flex;align-items:center;justify-content:center;grid-column:3;justify-self:end}
  .split{grid-template-columns:1fr;gap:var(--sp-6)}
  .split-media{position:static}
  .prep-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .compare-grid{grid-template-columns:1fr;gap:20px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 20px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .faq-a p{padding-left:20px}
}

@media screen and (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .cat-hero{padding:44px 0 40px;min-height:0}
  .cat-hero-sub{font-size:15.5px}
  .section-head{margin-bottom:var(--sp-5)}
  .section-head h2{padding-left:14px}
  .prep-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .faq-q{padding:16px;gap:10px;font-size:15px}
  .footer-brand p{max-width:100%}
  .float-cta{right:16px;bottom:18px;width:56px;height:56px;padding:0;justify-content:center;border-radius:50%}
  .float-cta .float-text{display:none}
  .float-cta i{font-size:20px}
}

@media screen and (max-width:519px){
  .brand-text{font-size:15.5px}
  .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .compare-card,.prep-card,.step-item{padding:22px}
}

/* roulang page: category2 */
:root{
  --c-primary:#1B63E0;
  --c-primary-dark:#1450BC;
  --c-primary-soft:#EEF4FF;
  --c-accent:#17C3A2;
  --c-accent-dark:#0E9A81;
  --c-warn:#FF7A2F;
  --c-warn-dark:#C4571A;
  --c-ink:#101828;
  --c-body:#475467;
  --c-muted:#98A2B3;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F6F8FC;
  --c-border:#E4E9F2;
  --c-shadow-sm:0 1px 2px rgba(16,24,40,.06);
  --c-shadow-md:0 8px 24px rgba(16,24,40,.07);
  --c-shadow-hover:0 12px 32px rgba(27,99,224,.14);
  --radius-lg:14px;
  --radius-sm:12px;
  --radius-pill:999px;
  --space-section:104px;
  --space-section-md:72px;
  --space-section-sm:56px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --fs-h1:clamp(30px,4.4vw,50px);
  --fs-h2:clamp(24px,3vw,34px);
  --fs-h3:20px;
  --fs-body:16px;
  --fs-sm:14px;
  --fs-xs:13px;
  --lh-tight:1.2;
  --lh-title:1.3;
  --lh-body:1.8;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:var(--fs-body);
  line-height:var(--lh-body);
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:var(--lh-title);}
h1{font-size:var(--fs-h1);line-height:var(--lh-tight);}
h2{font-size:var(--fs-h2);}
h3{font-size:var(--fs-h3);font-weight:600;line-height:1.4;}
h4{font-size:15px;font-weight:600;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-dark);text-decoration:underline;}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-sm);}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit;}
input,textarea{font-family:inherit;}
:focus-visible{outline:3px solid rgba(27,99,224,.28);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(150%) blur(6px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--c-border);
  box-shadow:0 8px 24px rgba(16,24,40,.06);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  height:72px;
  column-gap:16px;
}
.nav-side{display:flex;align-items:center;gap:6px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 13px;
  border-radius:10px;
  font-size:15px;
  color:var(--c-body);
  white-space:nowrap;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{
  color:var(--c-primary);
  background:var(--c-primary-soft);
  text-decoration:none;
}
.nav-link.is-active{
  color:var(--c-primary-dark);
  font-weight:600;
  background:var(--c-primary-soft);
}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:13px;
  right:13px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  justify-self:center;
  white-space:nowrap;
  color:var(--c-ink);
  font-weight:700;
  font-size:17px;
  letter-spacing:.2px;
}
.brand:hover{text-decoration:none;color:var(--c-ink);}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-dark));
  color:#fff;
  font-size:16px;
  font-weight:700;
  flex:0 0 auto;
}
.nav-cta{margin-left:8px;}

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;
  height:44px;
  border-radius:12px;
  padding:0 10px;
  transition:background-color .2s ease;
}
.nav-toggle:hover{background:var(--c-primary-soft);}
.nav-toggle span{
  display:block;
  height:2px;
  border-radius:2px;
  background:var(--c-ink);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.nav-mask{
  position:fixed;
  inset:0;
  background:rgba(16,24,40,.4);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
  z-index:70;
}
.nav-mask.is-open{opacity:1;visibility:visible;}

.mobile-panel{
  position:fixed;
  top:60px;
  left:0;
  right:0;
  z-index:80;
  background:#fff;
  border-bottom:1px solid var(--c-border);
  box-shadow:var(--c-shadow-md);
  padding:14px 20px 26px;
  max-height:calc(100vh - 60px);
  overflow:auto;
  transform:translateY(-14px);
  opacity:0;
  visibility:hidden;
  transition:transform .26s ease,opacity .26s ease,visibility .26s ease;
}
.mobile-panel.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.mobile-panel .m-link{
  display:block;
  padding:13px 14px;
  border-radius:12px;
  font-size:16px;
  color:var(--c-ink);
  border:1px solid transparent;
}
.mobile-panel .m-link + .m-link{margin-top:6px;}
.mobile-panel .m-link:hover{background:var(--c-bg-alt);text-decoration:none;color:var(--c-primary-dark);}
.mobile-panel .m-link.is-active{
  background:var(--c-primary-soft);
  color:var(--c-primary-dark);
  font-weight:600;
  border-color:rgba(27,99,224,.18);
}
.mobile-panel .m-cta{margin-top:14px;display:block;text-align:center;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn-primary{
  background:var(--c-primary);
  color:#fff;
  box-shadow:0 6px 16px rgba(27,99,224,.22);
}
.btn-primary:hover{
  background:var(--c-primary-dark);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 10px 22px rgba(27,99,224,.28);
}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:#fff;
  color:var(--c-primary);
  border-color:rgba(27,99,224,.42);
}
.btn-ghost:hover{
  background:var(--c-primary-soft);
  color:var(--c-primary-dark);
  border-color:var(--c-primary);
}
.btn-light{
  background:#fff;
  color:var(--c-primary-dark);
}
.btn-light:hover{
  background:#fff;
  color:var(--c-primary);
  transform:translateY(-1px);
}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  font-size:15px;
  color:var(--c-primary);
}
.btn-link i{transition:transform .2s ease;}
.btn-link:hover{text-decoration:none;color:var(--c-primary-dark);}
.btn-link:hover i{transform:translateX(3px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;}

/* ============ 徽章 / 标签 ============ */
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 11px;
  border-radius:var(--radius-pill);
  font-size:12.5px;
  font-weight:600;
  background:var(--c-primary-soft);
  color:var(--c-primary-dark);
  white-space:nowrap;
}
.pill-accent{background:rgba(23,195,162,.13);color:var(--c-accent-dark);}
.pill-warn{background:rgba(255,122,47,.13);color:var(--c-warn-dark);}
.pill-muted{background:#F1F4F9;color:var(--c-body);}

/* ============ 内页横幅 ============ */
.cat-hero{
  position:relative;
  padding:48px 0 60px;
  background-image:linear-gradient(180deg,rgba(255,255,255,.92),rgba(246,248,252,.9)),
                   url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--c-border);
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:var(--fs-xs);
  color:var(--c-muted);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);text-decoration:none;}
.breadcrumb .sep{color:#CBD3E1;}
.breadcrumb .current{color:var(--c-body);}
.cat-hero h1{max-width:900px;}
.cat-hero .hero-sub{
  margin-top:16px;
  max-width:720px;
  font-size:17px;
  color:var(--c-body);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}

/* ============ 板块通用 ============ */
.section{padding-top:var(--space-section);padding-bottom:var(--space-section);}
.section-alt{background:var(--c-bg-alt);}
.section-head{max-width:780px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--c-primary);
  letter-spacing:.4px;
  margin-bottom:14px;
}
.section-head .eyebrow::before{
  content:"";
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
}
.section-head p{margin-top:14px;font-size:16px;color:var(--c-body);}

/* ============ 介绍区 ============ */
.intro-wrap{max-width:840px;}
.intro-wrap p{font-size:16.5px;color:var(--c-body);}
.intro-lead{
  font-size:18px !important;
  color:var(--c-ink);
  font-weight:500;
}
.intro-facts{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  margin-top:36px;
}
.fact{
  padding:20px 22px;
  border:1px solid var(--c-border);
  border-radius:var(--radius-sm);
  background:#fff;
  box-shadow:var(--c-shadow-sm);
}
.fact strong{
  display:block;
  font-size:22px;
  color:var(--c-ink);
  line-height:1.3;
  margin-bottom:4px;
}
.fact span{font-size:var(--fs-sm);color:var(--c-muted);}

/* ============ 时间线 ============ */
.timeline{max-width:920px;margin:0 auto;}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:64px 1fr;
  gap:24px;
  padding-bottom:30px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item:not(:last-child)::before{
  content:"";
  position:absolute;
  left:31px;
  top:64px;
  width:2px;
  height:calc(100% - 58px);
  background:linear-gradient(180deg,var(--c-primary),var(--c-border));
  border-radius:2px;
}
.tl-num{
  position:relative;
  z-index:2;
  width:64px;
  height:64px;
  border-radius:50%;
  background:#fff;
  border:2px solid var(--c-primary);
  color:var(--c-primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  font-weight:700;
  box-shadow:0 6px 16px rgba(27,99,224,.14);
}
.tl-card{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  padding:24px 26px;
  box-shadow:var(--c-shadow-md);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tl-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--c-shadow-hover);
  border-color:rgba(27,99,224,.3);
}
.tl-card h3{margin-bottom:10px;}
.tl-card p{font-size:15.5px;color:var(--c-body);}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}

/* ============ 版本对照 ============ */
.version-grid{margin-top:8px;}
.version-card{
  height:100%;
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  box-shadow:var(--c-shadow-md);
  overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.version-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--c-shadow-hover);
  border-color:rgba(27,99,224,.3);
}
.version-card .thumb{
  position:relative;
  overflow:hidden;
  border-radius:0;
}
.version-card .thumb img{
  width:100%;
  height:230px;
  object-fit:cover;
  border-radius:0;
  transition:transform .3s ease;
}
.version-card:hover .thumb img{transform:scale(1.03);}
.version-body{padding:24px 26px 26px;}
.version-body h3{margin-bottom:10px;}
.version-body p{font-size:15px;color:var(--c-body);}
.check-list{margin-top:16px;}
.check-list li{
  position:relative;
  padding-left:26px;
  font-size:14.5px;
  line-height:2;
  color:var(--c-body);
}
.check-list li::before{
  content:"\f00c";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  left:0;
  top:2px;
  font-size:12px;
  color:var(--c-accent);
}
.mini-card{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  padding:22px 24px;
  box-shadow:var(--c-shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.mini-card + .mini-card{margin-top:24px;}
.mini-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--c-shadow-hover);
  border-color:rgba(27,99,224,.3);
}
.mini-card h3{font-size:18px;margin-bottom:8px;}
.mini-card p{font-size:14.5px;color:var(--c-body);}
.mini-head{display:flex;align-items:center;gap:12px;margin-bottom:10px;}
.mini-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:12px;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:16px;
  flex:0 0 auto;
}

/* ============ 信息条 ============ */
.info-band{
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  background:linear-gradient(135deg,rgba(238,244,255,.9),rgba(255,255,255,.95));
  padding:30px 32px;
  box-shadow:var(--c-shadow-sm);
}
.info-band h3{margin-bottom:18px;}
.info-band-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.info-item{display:flex;gap:14px;align-items:flex-start;}
.info-item i{
  color:var(--c-primary);
  font-size:16px;
  margin-top:4px;
}
.info-item strong{
  display:block;
  font-size:15.5px;
  color:var(--c-ink);
  font-weight:600;
  margin-bottom:4px;
}
.info-item span{font-size:14px;color:var(--c-body);line-height:1.7;}

/* ============ FAQ ============ */
.faq-list{max-width:900px;margin:0 auto;}
.faq-item{
  border:1px solid var(--c-border);
  border-radius:var(--radius-sm);
  background:#fff;
  overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item + .faq-item{margin-top:12px;}
.faq-item.is-open{
  border-color:rgba(27,99,224,.32);
  box-shadow:var(--c-shadow-md);
}
.faq-q{
  display:flex;
  align-items:center;
  gap:14px;
  width:100%;
  padding:18px 20px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
}
.faq-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:28px;
  height:28px;
  border-radius:50%;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:13px;
  font-weight:700;
  flex:0 0 auto;
}
.faq-text{flex:1;}
.faq-arrow{
  color:var(--c-muted);
  font-size:13px;
  transition:transform .25s ease,color .25s ease;
}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);color:var(--c-primary);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .28s ease;
}
.faq-a-inner{
  padding:0 20px 20px 62px;
  font-size:15px;
  color:var(--c-body);
  line-height:1.85;
}

/* ============ 底部转化带 ============ */
.cta-band{
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-dark));
  color:#fff;
  padding:64px 0;
}
.cta-band h2{color:#fff;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.86);max-width:620px;font-size:16px;}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
  margin-top:28px;
}
.cta-contact{
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  margin-top:24px;
  font-size:14px;
  color:rgba(255,255,255,.9);
}
.cta-contact span{display:inline-flex;align-items:center;gap:8px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-bg-alt);
  border-top:1px solid var(--c-border);
  padding:64px 0 0;
}
.site-footer h4{
  font-size:14px;
  color:var(--c-ink);
  letter-spacing:.3px;
  margin-bottom:16px;
}
.footer-brand .brand{justify-self:flex-start;margin-bottom:16px;}
.footer-brand p{
  font-size:14px;
  color:var(--c-body);
  line-height:1.85;
  max-width:340px;
}
.footer-links li a{
  font-size:14px;
  color:var(--c-body);
  line-height:2;
}
.footer-links li a:hover{color:var(--c-primary-dark);}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:var(--c-body);
  line-height:2;
}
.footer-contact i{
  color:var(--c-primary);
  font-size:13px;
  margin-top:8px;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  border-top:1px solid var(--c-border);
  margin-top:52px;
  padding:20px 0 26px;
  font-size:var(--fs-xs);
  color:var(--c-muted);
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:26px;
  bottom:26px;
  z-index:60;
  display:inline-flex;
  align-items:center;
  gap:9px;
  height:52px;
  padding:0 22px;
  border-radius:var(--radius-pill);
  background:var(--c-primary);
  color:#fff;
  font-size:14px;
  font-weight:600;
  box-shadow:0 12px 28px rgba(27,99,224,.3);
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s ease,background-color .2s ease;
}
.float-cta:hover{
  background:var(--c-primary-dark);
  color:#fff;
  text-decoration:none;
  transform:translateY(-2px);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta i{font-size:15px;}

/* ============ 响应式 ============ */
@media screen and (max-width:1279px){
  .container{padding-left:28px;padding-right:28px;}
}

@media screen and (max-width:1023px){
  :root{
    --space-section:72px;
    --space-section-md:56px;
    --space-section-sm:48px;
  }
  .container{padding-left:24px;padding-right:24px;}
  .header-inner{
    grid-template-columns:44px 1fr 44px;
    height:60px;
    column-gap:8px;
  }
  .nav-side{display:none;}
  .nav-toggle{display:inline-flex;justify-self:start;}
  .brand{grid-column:2;justify-self:center;font-size:16px;}
  .brand-mark{width:30px;height:30px;font-size:15px;border-radius:9px;}
  .cat-hero{padding:36px 0 46px;}
  .section{padding-top:var(--space-section);padding-bottom:var(--space-section);}
  .intro-facts{grid-template-columns:1fr;gap:14px;}
  .info-band-grid{grid-template-columns:1fr;gap:18px;}
  .tl-item{grid-template-columns:52px 1fr;gap:18px;}
  .tl-num{width:52px;height:52px;font-size:17px;}
  .tl-item:not(:last-child)::before{left:25px;top:52px;height:calc(100% - 46px);}
  .version-card .thumb img{height:210px;}
  .floated{float:none;}
}

@media screen and (max-width:767px){
  .cat-hero .hero-sub{font-size:16px;}
  .section-head{margin-bottom:32px;}
  .tl-card{padding:20px 20px;}
  .faq-a-inner{padding-left:20px;}
  .cta-band{padding:52px 0;}
  .float-cta{
    right:18px;
    bottom:18px;
    width:56px;
    height:56px;
    padding:0;
    justify-content:center;
    border-radius:50%;
  }
  .float-cta span{display:none;}
  .float-cta i{font-size:18px;}
}

@media screen and (max-width:520px){
  .container{padding-left:20px;padding-right:20px;}
  .brand-text{font-size:15px;}
  .cat-hero{padding:30px 0 38px;}
  .version-card .thumb img{height:190px;}
  .footer-brand p{max-width:100%;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .btn{height:44px;padding:0 18px;font-size:14.5px;}
  .timeline .tl-item{grid-template-columns:44px 1fr;gap:14px;}
  .tl-num{width:44px;height:44px;font-size:15px;}
  .tl-item:not(:last-child)::before{left:21px;top:44px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#1B63E0;
  --c-primary-dark:#1450BC;
  --c-primary-soft:#EEF4FF;
  --c-accent:#17C3A2;
  --c-warn:#FF7A2F;
  --c-ink:#101828;
  --c-body:#475467;
  --c-muted:#98A2B3;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F6F8FC;
  --c-border:#E4E9F2;
  --c-shadow-sm:0 1px 2px rgba(16,24,40,.06);
  --c-shadow-md:0 8px 24px rgba(16,24,40,.07);
  --c-shadow-hover:0 12px 32px rgba(27,99,224,.14);
  --radius-lg:14px;
  --radius-sm:12px;
  --radius-pill:999px;
  --sp-xs:8px;
  --sp-sm:12px;
  --sp-md:20px;
  --sp-lg:28px;
  --sp-xl:40px;
  --sp-2xl:64px;
  --sp-3xl:96px;
  --font-base:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.8;
  color:var(--c-body);
  background:var(--c-bg);
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.25;}
h1{font-size:clamp(30px,4.4vw,50px);line-height:1.2;}
h2{font-size:clamp(24px,3vw,34px);}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:14px;font-weight:700;letter-spacing:.02em;}
p{margin:0 0 1em;color:var(--c-body);}
p:last-child{margin-bottom:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-dark);text-decoration:underline;}
img{max-width:100%;display:block;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(27,99,224,.2);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.grid-x.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-x.grid-margin-x>.cell{padding-left:12px;padding-right:12px;}
section{scroll-margin-top:88px;}
.section{padding:96px 0;}
.section-alt{background:var(--c-bg-alt);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  color:var(--c-primary);
  background:var(--c-primary-soft);
  border-radius:var(--radius-pill);
  padding:6px 14px;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.section-head p{margin-top:16px;font-size:16px;color:var(--c-body);}
.lead{font-size:17px;line-height:1.9;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--c-border);
  box-shadow:var(--c-shadow-sm);
}
.nav-inner{
  display:flex;
  align-items:center;
  height:72px;
  gap:16px;
}
.nav-side{
  display:flex;
  align-items:center;
  gap:4px;
  flex:1 1 0;
  min-width:0;
}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--c-body);
  border-radius:8px;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft);text-decoration:none;}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  white-space:nowrap;
  color:var(--c-ink);
  font-weight:700;
  font-size:17px;
  letter-spacing:.01em;
}
.brand:hover{text-decoration:none;color:var(--c-primary-dark);}
.brand-mark{
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:linear-gradient(135deg,var(--c-primary),#3B84FF);
  color:#fff;
  font-size:17px;
  font-weight:700;
  box-shadow:0 6px 16px rgba(27,99,224,.24);
}
.brand-text{max-width:220px;overflow:hidden;text-overflow:ellipsis;}
.nav-cta{margin-left:8px;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  font-size:15px;
  font-weight:600;
  border-radius:10px;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 20px rgba(27,99,224,.22);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;}
.btn-outline{background:#fff;color:var(--c-primary);border-color:rgba(27,99,224,.45);}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);}
.btn-ghost{background:transparent;color:var(--c-primary);padding:12px 4px;}
.btn-ghost i{transition:transform .22s ease;}
.btn-ghost:hover i{transform:translateX(3px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-lg{padding:15px 32px;font-size:16px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--c-border);
  border-radius:10px;
  background:#fff;
  color:var(--c-ink);
  font-size:18px;
  cursor:pointer;
}
.mobile-panel{
  display:none;
  border-top:1px solid var(--c-border);
  background:#fff;
  padding:16px 0 24px;
  box-shadow:var(--c-shadow-md);
}
.mobile-panel .m-link{
  display:block;
  padding:14px 4px;
  font-size:16px;
  font-weight:500;
  color:var(--c-body);
  border-bottom:1px solid var(--c-border);
}
.mobile-panel .m-link.is-active{color:var(--c-primary);font-weight:600;}
.mobile-panel .btn{width:100%;margin-top:20px;}
.nav-mask{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(16,24,40,.4);
  z-index:55;
}
body.nav-open .nav-mask{display:block;}
body.nav-open .mobile-panel{display:block;}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--c-bg-alt);border-bottom:1px solid var(--c-border);}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:14px 0;
  font-size:13px;
  color:var(--c-muted);
}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#CBD5E1;}
.crumb .current{color:var(--c-body);}

/* ============ 分类小横幅 ============ */
.page-banner{
  position:relative;
  padding:56px 0 60px;
  background-image:linear-gradient(105deg,rgba(255,255,255,.94) 0%,rgba(238,244,255,.9) 58%,rgba(255,255,255,.86) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--c-border);
}
.page-banner .banner-inner{max-width:820px;}
.page-banner h1{margin-bottom:18px;}
.page-banner .sub{font-size:17px;color:var(--c-body);margin-bottom:24px;max-width:660px;}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 12px;
  font-size:13px;
  font-weight:500;
  color:var(--c-primary);
  background:rgba(255,255,255,.86);
  border:1px solid rgba(27,99,224,.18);
  border-radius:var(--radius-pill);
}
.tag-accent{color:#0E8C75;border-color:rgba(23,195,162,.3);background:rgba(23,195,162,.1);}

/* ============ 数据条 ============ */
.metrics{padding:48px 0 8px;}
.metric{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  box-shadow:var(--c-shadow-md);
  padding:26px 22px;
  height:100%;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.metric:hover{transform:translateY(-3px);box-shadow:var(--c-shadow-hover);border-color:rgba(27,99,224,.3);}
.metric .num{
  font-size:clamp(28px,3.4vw,38px);
  font-weight:700;
  color:var(--c-primary);
  line-height:1.1;
  letter-spacing:-.01em;
  display:flex;
  align-items:baseline;
  gap:6px;
}
.metric .num small{font-size:15px;font-weight:600;color:var(--c-body);}
.metric .label{margin-top:10px;font-size:14px;color:var(--c-muted);line-height:1.6;}

/* ============ 介绍区 ============ */
.intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start;}
.intro-copy p{font-size:16px;line-height:1.9;}
.intro-copy h2{margin-bottom:22px;}
.intro-points{margin-top:28px;display:grid;gap:14px;}
.intro-points li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  color:var(--c-body);
}
.intro-points i{
  color:var(--c-accent);
  margin-top:5px;
  font-size:14px;
}
.intro-visual{
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--c-border);
  box-shadow:var(--c-shadow-md);
  background:#fff;
}
.intro-visual img{width:100%;height:auto;transition:transform .3s ease;}
.intro-visual:hover img{transform:scale(1.03);}
.intro-visual .cap{padding:16px 20px;font-size:13px;color:var(--c-muted);border-top:1px solid var(--c-border);}

/* ============ 要点卡片栅格 ============ */
.card{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  box-shadow:var(--c-shadow-md);
  padding:26px 24px;
  height:100%;
  display:flex;
  flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--c-shadow-hover);border-color:rgba(27,99,224,.3);}
.card-icon{
  width:46px;height:46px;
  border-radius:12px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:19px;
  margin-bottom:18px;
}
.card-icon.accent{background:rgba(23,195,162,.12);color:#0E8C75;}
.card h3{margin-bottom:10px;font-size:18px;}
.card p{font-size:15px;line-height:1.8;color:var(--c-body);margin:0;}
.card .card-foot{
  margin-top:18px;
  padding-top:16px;
  border-top:1px dashed var(--c-border);
  font-size:13px;
  color:var(--c-muted);
  display:flex;
  align-items:center;
  gap:8px;
}
.card-grid-row{margin-bottom:24px;}

/* ============ 对照卡 ============ */
.compare-card{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  box-shadow:var(--c-shadow-md);
  padding:28px 26px;
  height:100%;
}
.compare-card.good{border-top:3px solid var(--c-accent);}
.compare-card.risk{border-top:3px solid var(--c-warn);}
.compare-card h3{display:flex;align-items:center;gap:10px;margin-bottom:18px;font-size:18px;}
.compare-card h3 i{font-size:16px;}
.compare-card.good h3 i{color:var(--c-accent);}
.compare-card.risk h3 i{color:var(--c-warn);}
.compare-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:11px 0;
  font-size:15px;
  line-height:1.75;
  border-bottom:1px solid var(--c-border);
}
.compare-list li:last-child{border-bottom:0;padding-bottom:0;}
.compare-list .dot{
  flex:0 0 auto;
  width:20px;height:20px;
  margin-top:4px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:10px;
}
.compare-card.good .dot{background:rgba(23,195,162,.14);color:#0E8C75;}
.compare-card.risk .dot{background:rgba(255,122,47,.14);color:#C45315;}

/* ============ 流程步骤 ============ */
.steps{display:grid;gap:18px;margin-top:8px;}
.step{
  display:flex;
  gap:18px;
  align-items:flex-start;
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-sm);
  padding:20px 22px;
  box-shadow:var(--c-shadow-sm);
  transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease;
}
.step:hover{box-shadow:var(--c-shadow-md);border-color:rgba(27,99,224,.28);transform:translateY(-2px);}
.step-num{
  flex:0 0 auto;
  width:34px;height:34px;
  border-radius:50%;
  background:var(--c-primary);
  color:#fff;
  font-size:15px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 6px 14px rgba(27,99,224,.24);
}
.step h3{font-size:17px;margin-bottom:6px;}
.step p{font-size:15px;margin:0;color:var(--c-body);}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion{border:0;background:transparent;}
.accordion-item{
  border:1px solid var(--c-border);
  border-radius:var(--radius-sm);
  background:#fff;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--c-shadow-sm);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.accordion-item:hover{border-color:rgba(27,99,224,.3);box-shadow:var(--c-shadow-md);}
.accordion-title{
  position:relative;
  display:block;
  padding:18px 56px 18px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  border:0;
  background:#fff;
  line-height:1.6;
}
.accordion-title:hover{background:#FBFCFE;color:var(--c-primary);text-decoration:none;}
.accordion-title::before{
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  right:22px;
  top:50%;
  transform:translateY(-50%);
  font-size:13px;
  color:var(--c-muted);
  transition:transform .25s ease,color .25s ease;
}
.accordion-item.is-active{border-color:rgba(27,99,224,.32);box-shadow:var(--c-shadow-md);}
.accordion-item.is-active .accordion-title{color:var(--c-primary);}
.accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(180deg);color:var(--c-primary);}
.accordion-content{
  border:0;
  padding:0 22px 20px 22px;
  background:var(--c-bg-alt);
  color:var(--c-body);
  font-size:15px;
  line-height:1.85;
}
.accordion-content p{margin:0;}

/* ============ CTA 带 ============ */
.cta-band{
  background:linear-gradient(120deg,var(--c-primary) 0%,#2F7BF6 100%);
  color:#fff;
  padding:72px 0;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-120px;top:-120px;
  width:380px;height:380px;
  border-radius:50%;
  background:rgba(255,255,255,.08);
}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.88);max-width:640px;margin-bottom:28px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.cta-band .btn-primary{background:#fff;color:var(--c-primary);box-shadow:0 10px 26px rgba(9,32,74,.22);}
.cta-band .btn-primary:hover{background:#F2F6FF;color:var(--c-primary-dark);}
.cta-band .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.14);color:#fff;}
.cta-contact{
  margin-top:22px;
  font-size:14px;
  color:rgba(255,255,255,.85);
  display:flex;
  flex-wrap:wrap;
  gap:20px;
}
.cta-contact i{margin-right:6px;}

/* ============ 页脚 ============ */
.site-footer{
  background:#F4F7FC;
  border-top:1px solid var(--c-border);
  padding:64px 0 0;
  margin-top:0;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.9;color:var(--c-body);max-width:320px;}
.site-footer h4{
  font-size:14px;
  font-weight:700;
  color:var(--c-ink);
  margin-bottom:16px;
}
.footer-links li,.footer-contact li{font-size:14px;line-height:2;color:var(--c-body);}
.footer-links a{color:var(--c-body);}
.footer-links a:hover{color:var(--c-primary);text-decoration:underline;}
.footer-contact i{color:var(--c-primary);width:18px;margin-right:8px;}
.footer-bottom{
  margin-top:48px;
  border-top:1px solid var(--c-border);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  font-size:13px;
  color:var(--c-muted);
}
.grid-gap{margin-top:8px;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:24px;
  bottom:28px;
  z-index:50;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:14px 22px;
  border-radius:var(--radius-pill);
  background:var(--c-primary);
  color:#fff;
  font-size:14px;
  font-weight:600;
  box-shadow:0 14px 30px rgba(27,99,224,.3);
  opacity:0;
  visibility:hidden;
  transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease,background .22s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--c-primary-dark);color:#fff;text-decoration:none;}
.float-cta i{font-size:16px;}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .nav-link{padding:8px 9px;font-size:14px;}
  .brand-text{max-width:170px;font-size:15px;}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .section-head{margin-bottom:36px;}
}
@media screen and (max-width:767px){
  .nav-side{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{height:60px;justify-content:space-between;}
  .brand{order:-1;}
  .metrics{padding:32px 0 0;}
  .cta-band{padding:56px 0;}
  .site-footer{padding-top:48px;}
}
@media screen and (max-width:639px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  body{font-size:15px;}
  .lead{font-size:15.5px;}
  .page-banner{padding:40px 0 44px;}
  .page-banner .sub{font-size:15.5px;}
  .metric{padding:22px 18px;}
  .card{padding:22px 20px;}
  .float-cta{
    right:18px;bottom:20px;
    width:56px;height:56px;
    padding:0;
    justify-content:center;
  }
  .float-cta span{display:none;}
  .float-cta i{font-size:20px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media screen and (max-width:479px){
  .brand-text{max-width:130px;font-size:14px;}
  .brand-mark{width:32px;height:32px;font-size:15px;}
  .accordion-title{padding:16px 48px 16px 16px;font-size:15px;}
  .accordion-content{padding:0 16px 18px 16px;}
}

/* roulang page: category4 */
:root{
  --c-primary:#1B63E0;
  --c-primary-dark:#1450BC;
  --c-primary-soft:#EEF4FF;
  --c-accent:#17C3A2;
  --c-warn:#FF7A2F;
  --c-ink:#101828;
  --c-body:#475467;
  --c-muted:#98A2B3;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F6F8FC;
  --c-border:#E4E9F2;
  --c-shadow-sm:0 1px 2px rgba(16,24,40,.06);
  --c-shadow-md:0 8px 24px rgba(16,24,40,.07);
  --c-shadow-hover:0 12px 32px rgba(27,99,224,.14);
  --r-lg:14px;
  --r-md:12px;
  --r-sm:10px;
  --r-pill:999px;
  --sp-xs:8px;
  --sp-sm:12px;
  --sp-md:20px;
  --sp-lg:32px;
  --sp-xl:48px;
  --sec-y:96px;
  --font-base:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ease:.22s ease;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.8;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.3;}
h1{font-size:clamp(30px,4.4vw,50px);line-height:1.2;}
h2{font-size:clamp(24px,3vw,34px);line-height:1.25;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:16px;font-weight:600;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--c-primary-dark);text-decoration:underline;}
img{max-width:100%;height:auto;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:3px solid rgba(27,99,224,.3);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}

/* 栅格间距修正：24px */
.grid-margin-x{margin-left:-12px !important;margin-right:-12px !important;}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px;}
.grid-gap{margin-bottom:-24px;}
.grid-gap>.cell{margin-bottom:24px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:200;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid transparent;
  transition:box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--c-border);
  box-shadow:0 4px 18px rgba(16,24,40,.06);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  height:72px;
  gap:var(--sp-md);
}
.nav-side{display:flex;align-items:center;gap:26px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--c-body);
  padding:6px 2px;
  white-space:nowrap;
}
.nav-link:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px;}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-3px;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:38px;height:38px;
  display:flex;align-items:center;justify-content:center;
  border-radius:11px;
  background:linear-gradient(135deg,var(--c-primary),#3B84F0);
  color:#fff;font-weight:700;font-size:18px;
  box-shadow:var(--c-shadow-sm);
}
.brand-text{
  font-size:17px;
  font-weight:700;
  color:var(--c-ink);
  white-space:nowrap;
  letter-spacing:.2px;
}
.nav-cta{margin-left:6px;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--c-border);
  border-radius:var(--r-sm);
  background:#fff;
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.mobile-panel{
  position:fixed;
  top:60px;left:0;right:0;
  z-index:190;
  background:#fff;
  border-bottom:1px solid var(--c-border);
  box-shadow:var(--c-shadow-md);
  padding:18px 20px 24px;
  transform:translateY(-12px);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.mobile-panel.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.mobile-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:16px;}
.mobile-nav a{
  display:block;
  padding:13px 14px;
  border-radius:var(--r-sm);
  color:var(--c-ink);
  font-size:15px;
  border:1px solid transparent;
}
.mobile-nav a:hover{background:var(--c-primary-soft);text-decoration:none;color:var(--c-primary-dark);}
.mobile-nav a.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;border-color:rgba(27,99,224,.18);}
.nav-overlay{
  position:fixed;
  inset:0;
  z-index:180;
  background:rgba(16,24,40,.4);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);
}
.nav-overlay.is-open{opacity:1;visibility:visible;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  border:1px solid transparent;
  text-decoration:none;
  transition:transform var(--ease),background-color var(--ease),color var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(27,99,224,.22);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);}
.btn-outline{background:#fff;color:var(--c-primary);border-color:rgba(27,99,224,.45);}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary);}
.btn-ghost{background:transparent;color:var(--c-primary);padding:6px 0;font-weight:600;}
.btn-ghost i{transition:transform var(--ease);}
.btn-ghost:hover{color:var(--c-primary-dark);text-decoration:none;}
.btn-ghost:hover i{transform:translateX(3px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 标签 / 徽章 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 10px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  font-weight:600;
  background:var(--c-primary-soft);
  color:var(--c-primary-dark);
}
.badge-accent{background:rgba(23,195,162,.12);color:#0E9E83;}
.badge-warn{background:rgba(255,122,47,.12);color:#D95F16;}
.badge-muted{background:#F2F4F8;color:var(--c-muted);}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:1px;
  color:var(--c-primary);
  background:var(--c-primary-soft);
  border-radius:var(--r-pill);
  padding:5px 14px;
  margin-bottom:16px;
}

/* ============ 板块 ============ */
.section{padding:var(--sec-y) 0;}
.section-alt{background:var(--c-bg-alt);}
.section-head{max-width:780px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head p{font-size:16.5px;color:var(--c-body);margin-top:12px;}
.divider{height:1px;background:var(--c-border);border:0;margin:0;}

/* ============ 分类页横幅 ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  background:
    linear-gradient(100deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.9) 46%,rgba(238,244,255,.78) 100%),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  border-bottom:1px solid var(--c-border);
}
.page-hero-inner{
  padding:52px 0 56px;
  max-width:840px;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--c-muted);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--c-body);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#CBD3E1;}
.breadcrumb .current{color:var(--c-muted);}
.page-hero h1{margin-bottom:16px;}
.page-hero .lead{
  font-size:17px;
  color:var(--c-body);
  max-width:680px;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

/* ============ 介绍段落 ============ */
.intro-text{max-width:800px;}
.intro-text p{font-size:16.5px;line-height:1.9;}
.intro-text h2{margin-bottom:20px;}
.intro-note{
  margin-top:28px;
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:20px 22px;
  background:var(--c-primary-soft);
  border:1px solid rgba(27,99,224,.14);
  border-radius:var(--r-lg);
  font-size:15px;
  color:#2C4A7C;
}
.intro-note i{color:var(--c-primary);font-size:17px;margin-top:4px;}

/* ============ 双栏图文 ============ */
.split-row{
  display:grid;
  gap:52px;
  align-items:center;
  margin-bottom:72px;
}
.split-row:last-child{margin-bottom:0;}
.split-row.cols-text-image{grid-template-columns:1fr 1fr;}
.split-row.cols-image-text{grid-template-columns:1fr 1fr;}
.split-text h3{margin-bottom:14px;}
.split-text p{font-size:16.5px;}
.check-list{margin:18px 0 0;display:flex;flex-direction:column;gap:11px;}
.check-list li{
  display:flex;
  gap:11px;
  align-items:flex-start;
  font-size:15.5px;
  color:var(--c-body);
}
.check-list i{
  flex:none;
  width:22px;height:22px;
  margin-top:4px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(23,195,162,.14);
  color:#0E9E83;
  font-size:11px;
}
.split-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--c-border);
  box-shadow:var(--c-shadow-md);
  background:#fff;
}
.split-media img{
  width:100%;
  height:auto;
  transition:transform .35s ease;
}
.split-media:hover img{transform:scale(1.03);}
.split-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(16,24,40,0) 62%,rgba(16,24,40,.18));
  pointer-events:none;
}
.media-caption{
  position:absolute;
  left:16px;right:16px;bottom:14px;
  z-index:2;
  color:#fff;
  font-size:13px;
  text-shadow:0 1px 6px rgba(16,24,40,.5);
}
.split-media.is-flat{border-radius:var(--r-md);}
.split-media .tag-float{
  position:absolute;
  top:14px;left:14px;
  z-index:2;
  background:rgba(255,255,255,.94);
  color:var(--c-primary-dark);
  box-shadow:var(--c-shadow-sm);
}

/* ============ 要点卡 ============ */
.feature-grid{display:grid;gap:24px;grid-template-columns:repeat(2,1fr);}
.feature-card{
  position:relative;
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:26px 26px 24px;
  box-shadow:var(--c-shadow-md);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.feature-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--c-shadow-hover);
  border-color:rgba(27,99,224,.3);
}
.feature-icon{
  width:46px;height:46px;
  display:flex;align-items:center;justify-content:center;
  border-radius:13px;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:19px;
  margin-bottom:16px;
}
.feature-card h3{font-size:18px;margin-bottom:10px;}
.feature-card p{font-size:15px;margin-bottom:0;}

/* ============ 活动排期（票券式信息条） ============ */
.schedule-list{display:flex;flex-direction:column;gap:16px;}
.schedule-item{
  display:grid;
  grid-template-columns:150px 1fr auto;
  gap:24px;
  align-items:center;
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:20px 24px;
  box-shadow:var(--c-shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.schedule-item:hover{
  transform:translateY(-2px);
  border-color:rgba(27,99,224,.3);
  box-shadow:var(--c-shadow-hover);
}
.schedule-date{
  border-right:1px dashed var(--c-border);
  padding-right:20px;
}
.schedule-date strong{
  display:block;
  font-size:16px;
  color:var(--c-ink);
  font-weight:700;
  margin-bottom:4px;
}
.schedule-date span{font-size:13px;color:var(--c-muted);}
.schedule-body h3{font-size:17px;margin-bottom:6px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.schedule-body p{font-size:14.5px;margin-bottom:0;color:var(--c-body);}
.schedule-action{display:flex;align-items:center;gap:12px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-accordion{
  background:transparent;
  margin:0;
  border:0;
}
.faq-accordion .accordion-item{
  margin-bottom:12px;
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  background:#fff;
  overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-accordion .accordion-item.is-active{
  border-color:rgba(27,99,224,.32);
  box-shadow:var(--c-shadow-md);
}
.faq-accordion .accordion-title{
  display:flex;
  align-items:center;
  gap:14px;
  padding:18px 20px;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  border:0;
  background:#fff;
  line-height:1.6;
  transition:background-color var(--ease),color var(--ease);
}
.faq-accordion .accordion-title::before{display:none;}
.faq-accordion .accordion-title::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:12px;
  color:var(--c-muted);
  margin-left:auto;
  transition:transform .25s ease,color var(--ease);
}
.faq-accordion .accordion-item.is-active .accordion-title{color:var(--c-primary-dark);background:var(--c-primary-soft);}
.faq-accordion .accordion-item.is-active .accordion-title::after{transform:rotate(180deg);color:var(--c-primary);}
.faq-accordion .accordion-title:hover{background:#F8FAFF;text-decoration:none;}
.faq-q-icon{
  flex:none;
  width:28px;height:28px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:13px;
  font-weight:700;
}
.faq-accordion .accordion-item.is-active .faq-q-icon{background:var(--c-primary);color:#fff;}
.faq-accordion .accordion-content{
  padding:18px 20px 20px 62px;
  border:0;
  background:#FAFBFE;
  color:var(--c-body);
  font-size:15.5px;
  line-height:1.85;
}
.faq-accordion .accordion-content p{margin-bottom:0;}

/* ============ 底部转化带 ============ */
.cta-band{
  background:linear-gradient(135deg,#EEF4FF 0%,#F7FAFF 100%);
  border-top:1px solid var(--c-border);
  border-bottom:1px solid var(--c-border);
  padding:72px 0;
}
.cta-band h2{margin-bottom:14px;}
.cta-band .sub{font-size:16.5px;max-width:640px;margin-bottom:26px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;align-items:center;}
.cta-contact{
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  margin-top:24px;
  font-size:14.5px;
  color:var(--c-body);
}
.cta-contact span{display:inline-flex;align-items:center;gap:8px;}
.cta-contact i{color:var(--c-primary);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-ink);
  color:rgba(255,255,255,.72);
  padding:64px 0 28px;
  font-size:14.5px;
}
.site-footer h4{
  color:#fff;
  font-size:14px;
  letter-spacing:.5px;
  margin-bottom:16px;
}
.site-footer .brand-text{color:#fff;}
.site-footer .brand-mark{background:linear-gradient(135deg,#2E7BFF,#1B63E0);}
.footer-brand p{
  margin-top:18px;
  max-width:340px;
  line-height:1.9;
  color:rgba(255,255,255,.66);
}
.footer-links,.footer-contact{display:flex;flex-direction:column;gap:2px;}
.footer-links a,.footer-contact li{
  color:rgba(255,255,255,.72);
  font-size:14px;
  line-height:2;
  transition:color var(--ease);
}
.footer-links a:hover{color:#fff;text-decoration:none;}
.footer-contact li{display:flex;align-items:center;gap:10px;}
.footer-contact i{color:#7FB0FF;width:16px;}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13.5px;
  color:rgba(255,255,255,.55);
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:150;
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:14px 24px;
  border-radius:var(--r-pill);
  background:var(--c-primary);
  color:#fff;
  font-size:14px;
  font-weight:600;
  box-shadow:0 10px 26px rgba(27,99,224,.32);
  opacity:0;
  visibility:hidden;
  transform:translateY(14px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease),background-color var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--c-primary-dark);color:#fff;text-decoration:none;}

/* ============ 响应式 ============ */
@media screen and (max-width:1279px){
  .container{padding:0 28px;}
}

@media screen and (max-width:1023px){
  :root{--sec-y:72px;}
  .container{padding:0 24px;}
  .nav-side{display:none;}
  .nav-cta{display:none;}
  .header-inner{height:60px;grid-template-columns:1fr auto 1fr;}
  .nav-toggle{display:flex;justify-self:end;grid-column:3;}
  .brand{grid-column:2;justify-self:center;}
  .brand-mark{width:34px;height:34px;font-size:16px;}
  .brand-text{font-size:16px;}
  .nav-left,.nav-right{display:none;}
  .split-row{gap:36px;margin-bottom:56px;}
  .schedule-item{grid-template-columns:130px 1fr;grid-template-areas:"date body" "action action";}
  .schedule-date{grid-area:date;}
  .schedule-body{grid-area:body;}
  .schedule-action{grid-area:action;justify-content:flex-start;}
  .site-footer{padding:56px 0 24px;}
}

@media screen and (max-width:767px){
  body{font-size:15.5px;}
  :root{--sec-y:56px;}
  .container{padding:0 20px;}
  .page-hero-inner{padding:38px 0 42px;}
  .page-hero .lead{font-size:16px;}
  .split-row{grid-template-columns:1fr !important;gap:26px;}
  .split-row .split-media{order:-1;}
  .feature-grid{grid-template-columns:1fr;}
  .schedule-item{grid-template-columns:1fr;grid-template-areas:"date" "body" "action";gap:14px;}
  .schedule-date{border-right:0;border-bottom:1px dashed var(--c-border);padding:0 0 12px;}
  .faq-accordion .accordion-content{padding:16px 18px 18px 52px;}
  .cta-band{padding:56px 0;}
  .float-cta{
    padding:0;
    width:56px;height:56px;
    justify-content:center;
    right:18px;bottom:18px;
  }
  .float-cta span{display:none;}
  .float-cta i{font-size:20px;}
  .footer-bottom{margin-top:32px;}
}

@media screen and (max-width:520px){
  h1{font-size:26px;}
  .brand-text{font-size:14.5px;}
  .btn{padding:11px 18px;font-size:14.5px;}
  .hero-actions .btn{width:100%;}
  .footer-contact li{font-size:13.5px;}
}