/* roulang page: index */
:root{
  --brand:#1F5FE0;
  --brand-deep:#143A8A;
  --brand-soft:#EEF3FF;
  --accent:#F08A24;
  --accent-deep:#D2730F;
  --ok:#1E9E6A;
  --danger:#D64545;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --line:#E4E9F2;
  --ink:#101B2E;
  --ink-2:#55637A;
  --ink-3:#93A0B5;
  --footer-bg:#0E1A2E;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --sh-card:0 2px 4px rgba(16,27,46,.04), 0 12px 28px rgba(16,27,46,.06);
  --sh-hover:0 6px 12px rgba(16,27,46,.06), 0 20px 40px rgba(16,27,46,.10);
  --sh-float:0 8px 16px rgba(16,27,46,.08), 0 24px 48px rgba(16,27,46,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-deep);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
p{margin:0 0 14px;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.num,.hs-num,.p-price,.news-date,.stat-num,.hpc-price span{
  font-family:"Inter","Barlow",system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* ============ 容器 ============ */
.site-container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
.section{padding:76px 0;}
.section-tight{padding:56px 0;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  padding:16px 0 0;
  background:var(--bg);
}
.nav-panel{
  display:flex;
  align-items:center;
  gap:12px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  padding:10px 14px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink);
  font-size:17px;
  font-weight:800;
  letter-spacing:.2px;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:34px;height:34px;
  flex:0 0 auto;
  border-radius:10px;
  background:var(--brand);
  display:grid;place-items:center;
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{white-space:nowrap;}
.nav-entries{
  display:flex;
  align-items:center;
  gap:6px;
  margin:0 auto;
}
.nav-entry{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:8px 13px;
  border-radius:12px;
  font-size:14px;
  font-weight:500;
  color:var(--ink-2);
  white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-entry i{font-size:14px;color:var(--ink-3);transition:color .2s var(--ease);}
.nav-entry:hover{background:var(--brand-soft);color:var(--brand);}
.nav-entry:hover i{color:var(--brand);}
.nav-entry.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.nav-entry.active i{color:var(--brand);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}

/* ============ 按钮 ============ */
.btn-brand,.btn-accent,.btn-line,.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.btn-brand{background:var(--brand);border-color:var(--brand);color:#fff;}
.btn-brand:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;box-shadow:0 8px 20px rgba(20,58,138,.26);transform:translateY(-1px);}
.btn-accent{background:var(--accent);border-color:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-deep);border-color:var(--accent-deep);color:#fff;box-shadow:0 8px 20px rgba(210,115,15,.26);transform:translateY(-1px);}
.btn-line{background:#fff;border-color:var(--line);color:var(--ink);}
.btn-line:hover{border-color:var(--brand);color:var(--brand);background:#fff;}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff;}
.btn-ghost:hover{background:#fff;border-color:#fff;color:var(--brand);}
.btn-brand:active,.btn-accent:active,.btn-line:active,.btn-ghost:active{transform:translateY(0);}
.btn-menu{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  background:var(--brand-soft);border:1px solid var(--line);color:var(--brand);
  font-size:16px;cursor:pointer;
  transition:background .2s var(--ease);
}
.btn-menu:hover{background:#E1EAFF;}

/* ============ 抽屉导航 ============ */
.drawer{width:320px;border-left:1px solid var(--line);}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.drawer .offcanvas-title{font-size:17px;font-weight:800;}
.drawer .btn-close{opacity:.45;}
.drawer .btn-close:hover{opacity:.85;}
.drawer .offcanvas-body{padding:18px 20px;display:flex;flex-direction:column;gap:10px;}
.drawer-entry{
  display:flex;align-items:center;gap:12px;
  padding:14px 16px;border-radius:12px;
  background:var(--bg);border:1px solid var(--line);
  color:var(--ink);font-size:15px;font-weight:500;
}
.drawer-entry i{color:var(--brand);width:18px;text-align:center;}
.drawer-entry:hover{background:var(--brand-soft);border-color:#D5E1FB;color:var(--brand);}
.drawer-entry.active{background:var(--brand-soft);border-color:#D5E1FB;color:var(--brand);font-weight:700;}
.drawer-cta{padding:0 20px 22px;}

/* ============ Hero ============ */
.hero{padding:28px 0 0;}
.hero-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:var(--sh-card);
  padding:44px 44px 40px;
  overflow:hidden;
}
.hero-card::before{
  content:"";
  position:absolute;
  right:-120px;top:-140px;
  width:420px;height:420px;
  border-radius:50%;
  border:1px solid rgba(31,95,224,.05);
  background:radial-gradient(circle at 30% 30%, rgba(31,95,224,.05), transparent 68%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;letter-spacing:.2px;
  margin-bottom:18px;
}
.hero-title{
  font-size:clamp(28px,4.4vw,44px);
  font-weight:800;
  line-height:1.25;
  letter-spacing:-.5px;
  margin-bottom:16px;
}
.hero-title em{font-style:normal;color:var(--brand-deep);}
.hero-sub{
  font-size:16px;
  color:var(--ink-2);
  line-height:1.8;
  margin-bottom:26px;
  max-width:460px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:8px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:12px;
  margin-top:26px;padding-top:22px;border-top:1px solid var(--line);
}
.hs{display:flex;flex-direction:column;gap:2px;}
.hs-num{font-size:22px;font-weight:800;color:var(--brand-deep);line-height:1.2;}
.hs-num span{font-size:13px;font-weight:600;}
.hs-label{font-size:13px;color:var(--ink-3);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-img);
  border:1px solid var(--line);
}
.hero-price-card{
  position:absolute;
  right:22px;bottom:22px;
  width:224px;
  background:#fff;
  border-radius:var(--r-img);
  box-shadow:var(--sh-float);
  padding:16px 18px;
}
.hpc-tag{
  display:inline-block;
  padding:3px 10px;border-radius:999px;
  background:rgba(240,138,36,.12);color:var(--accent-deep);
  font-size:12px;font-weight:600;
}
.hpc-name{font-size:14px;font-weight:600;margin:8px 0 4px;line-height:1.5;}
.hpc-price{display:flex;align-items:baseline;gap:4px;margin-bottom:10px;}
.hpc-price span{font-size:24px;font-weight:800;color:var(--ink);}
.hpc-price em{font-style:normal;font-size:12px;color:var(--ink-3);}
.hpc-btn{
  display:block;text-align:center;
  padding:9px 0;border-radius:8px;
  background:var(--accent);color:#fff;
  font-size:14px;font-weight:600;
  transition:background .2s var(--ease);
}
.hpc-btn:hover{background:var(--accent-deep);color:#fff;}

/* ============ 板块标题 ============ */
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:32px;
}
.section-head h2{
  font-size:clamp(22px,3vw,32px);
  font-weight:700;line-height:1.35;
}
.section-head .sub{margin-top:8px;font-size:15px;color:var(--ink-2);}
.section-head .link-more{font-size:14px;font-weight:600;color:var(--brand);white-space:nowrap;}
.section-head .link-more:hover{color:var(--brand-deep);}

/* ============ 商品卡片 ============ */
.p-card{
  height:100%;
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.p-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.p-media{
  position:relative;
  aspect-ratio:4/3;
  overflow:hidden;
  background:var(--brand-soft);
}
.p-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease);}
.p-card:hover .p-media img{transform:scale(1.03);}
.p-badge{
  position:absolute;left:12px;top:12px;
  padding:4px 10px;border-radius:999px;
  font-size:12px;font-weight:700;color:#fff;
  letter-spacing:.4px;
}
.p-badge.is-accent{background:var(--accent);}
.p-badge.is-ok{background:var(--ok);}
.p-body{padding:15px 16px 16px;display:flex;flex-direction:column;flex:1;gap:8px;}
.p-title{
  font-size:16px;font-weight:600;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.p-line{
  font-size:14px;color:var(--ink-2);line-height:1.6;margin:0;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.p-foot{margin-top:auto;padding-top:6px;display:flex;align-items:center;justify-content:space-between;gap:10px;}
.p-price{display:flex;align-items:baseline;gap:5px;font-size:19px;font-weight:800;color:var(--ink);}
.p-price small{font-size:12px;font-weight:400;color:var(--ink-3);}
.btn-cart{
  flex:0 0 auto;
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 13px;border-radius:var(--r-btn);
  background:var(--accent);border:1px solid var(--accent);color:#fff;
  font-size:13px;font-weight:600;cursor:pointer;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.btn-cart:hover{background:var(--accent-deep);border-color:var(--accent-deep);}
.btn-cart:active{transform:translateY(1px);}

/* ============ 评价轮播 ============ */
.review-card{
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  padding:24px;
  display:flex;flex-direction:column;
  gap:10px;
}
.review-top{display:flex;align-items:center;gap:12px;}
.avatar{
  width:44px;height:44px;flex:0 0 auto;border-radius:50%;
  display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);
  font-size:16px;font-weight:800;
}
.avatar.alt{background:rgba(240,138,36,.12);color:var(--accent-deep);}
.avatar.ok{background:rgba(30,158,106,.12);color:var(--ok);}
.review-name{font-size:15px;font-weight:700;line-height:1.4;}
.review-role{font-size:13px;color:var(--ink-3);line-height:1.5;}
.review-stars{color:var(--accent);font-size:13px;letter-spacing:2px;margin:0;}
.review-text{font-size:14.5px;color:var(--ink-2);line-height:1.8;margin:0;}
.review-time{margin-top:auto;font-size:12.5px;color:var(--ink-3);}
.carousel-indicators{
  position:static;
  margin:26px 0 0;
  gap:8px;
}
.carousel-indicators [data-bs-target]{
  width:30px;height:4px;border:0;border-radius:999px;
  background:var(--line);opacity:1;margin:0;padding:0;text-indent:0;
  transition:background .2s var(--ease),width .2s var(--ease);
}
.carousel-indicators .active{background:var(--brand);width:44px;}

/* ============ 保障条 ============ */
.guarantee{
  background:var(--brand-soft);
  border-radius:20px;
  padding:30px 26px;
}
.g-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.g-item{
  display:flex;gap:12px;align-items:flex-start;
  padding-right:18px;
  border-right:1px solid rgba(31,95,224,.14);
}
.g-item:last-child{border-right:0;padding-right:0;}
.g-icon{
  width:38px;height:38px;flex:0 0 auto;border-radius:10px;
  display:grid;place-items:center;
  background:#fff;color:var(--brand);font-size:16px;
}
.g-icon.is-ok{color:var(--ok);}
.g-title{font-size:15px;font-weight:700;line-height:1.5;}
.g-desc{font-size:13px;color:var(--ink-2);line-height:1.7;}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--brand);
  border-radius:20px;
  padding:40px 44px;
  display:flex;align-items:center;justify-content:space-between;
  gap:28px;
  color:#fff;
}
.cta-band::after{
  content:"";
  position:absolute;inset:0;
  background:repeating-linear-gradient(45deg,rgba(255,255,255,.07) 0 2px,transparent 2px 12px);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:1;}
.cta-inner h2{color:#fff;font-size:clamp(20px,2.6vw,26px);font-weight:700;line-height:1.4;margin-bottom:8px;}
.cta-inner p{color:rgba(255,255,255,.82);font-size:15px;margin:0;max-width:520px;}
.cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;}

/* ============ 资讯卡片 ============ */
.news-card{
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.news-link{display:flex;flex-direction:column;height:100%;padding:22px;color:inherit;}
.news-link:hover{color:inherit;}
.news-cat{
  align-self:flex-start;
  padding:4px 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12.5px;font-weight:600;
  margin-bottom:14px;
}
.news-title{
  font-size:17px;font-weight:600;line-height:1.55;
  margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s var(--ease);
}
.news-card:hover .news-title{color:var(--brand);}
.news-excerpt{
  font-size:14.5px;color:var(--ink-2);line-height:1.8;margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.news-date{font-size:13px;color:var(--ink-3);}
.news-more{font-size:13.5px;font-weight:600;color:var(--brand);}
.news-empty{
  min-height:170px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;text-align:center;
  background:var(--surface);border:1px dashed var(--line);
  border-radius:var(--r-card);padding:36px 24px;
}
.news-empty i{font-size:24px;color:var(--ink-3);}
.news-empty p{margin:0;font-size:15px;color:var(--ink-2);}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-left:3px solid transparent;
  border-radius:var(--r-card)!important;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s var(--ease);
}
.accordion-item:has(.accordion-button:not(.collapsed)){border-left-color:var(--brand);}
.accordion-button{
  display:flex;align-items:center;gap:14px;
  width:100%;
  padding:20px 22px;
  font-size:16px;font-weight:600;color:var(--ink);
  background:var(--surface);
  border:0;box-shadow:none!important;
  border-radius:var(--r-card)!important;
}
.accordion-button:not(.collapsed){color:var(--brand);background:var(--surface);}
.accordion-button:focus{box-shadow:none!important;}
.accordion-button::after{display:none;}
.faq-icon{
  margin-left:auto;flex:0 0 auto;
  position:relative;width:24px;height:24px;border-radius:50%;
  border:1px solid var(--line);background:#fff;
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  transform:translate(-50%,-50%);
  background:var(--brand);border-radius:2px;
  transition:background .2s var(--ease);
}
.faq-icon::before{width:10px;height:2px;}
.faq-icon::after{width:2px;height:10px;}
.accordion-button:not(.collapsed) .faq-icon{transform:rotate(180deg);background:var(--brand);border-color:var(--brand);}
.accordion-button:not(.collapsed) .faq-icon::before,
.accordion-button:not(.collapsed) .faq-icon::after{background:#fff;}
.accordion-body{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--ink-2);}
.accordion-body p:last-child{margin-bottom:0;}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer-bg);color:#fff;padding:60px 0 0;margin-top:20px;}
.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.f-brand .brand-mark{background:rgba(255,255,255,.1);}
.f-brand span{font-size:17px;font-weight:800;color:#fff;}
.f-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);margin-bottom:18px;max-width:300px;}
.f-contact li{font-size:13.5px;color:rgba(255,255,255,.72);line-height:2;}
.f-contact i{width:16px;color:rgba(255,255,255,.45);margin-right:6px;}
.f-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.f-links li{margin-bottom:11px;}
.f-link{
  font-size:14px;color:rgba(255,255,255,.72);
  display:inline-block;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.f-link:hover{color:#fff;transform:translateX(2px);}
.f-social{display:flex;gap:12px;margin-top:16px;}
.f-social a{
  width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.75);
  font-size:15px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.f-social a:hover{background:var(--brand);color:#fff;}
.f-bottom{
  margin-top:44px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:10px;
  font-size:13px;color:rgba(255,255,255,.56);
}

/* ============ 响应式 ============ */
/* ≥1200 完整双栏 Hero + 4 列网格 */
@media (max-width:1199.98px){
  .hero-grid{gap:32px;}
}
/* 992–1199 三列 / 侧栏保留 */
@media (max-width:991.98px){
  .section{padding:56px 0;}
  .hero-card{padding:32px 26px;}
  .hero-grid{grid-template-columns:1fr;gap:28px;}
  .hero-sub{max-width:none;}
  .hero-visual img{height:250px;aspect-ratio:auto;}
  .hero-price-card{position:static;width:100%;margin-top:16px;box-shadow:var(--sh-card);}
  .g-grid{grid-template-columns:repeat(2,1fr);gap:22px;}
  .g-item{border-right:0;padding-right:0;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 26px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-accent,.cta-actions .btn-ghost{flex:1 1 auto;}
  .f-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
/* 576–767 两列卡 */
@media (max-width:767.98px){
  .site-container{padding-left:16px;padding-right:16px;}
  .section{padding:48px 0;}
  .site-header{padding:12px 0 0;}
  .nav-panel{padding:9px 12px;}
  .brand{font-size:15.5px;}
  .brand-mark{width:30px;height:30px;}
  .hero{padding:20px 0 0;}
  .hero-card{padding:26px 18px;border-radius:16px;}
  .hero-stats{grid-template-columns:repeat(3,1fr);gap:8px;}
  .hs-num{font-size:19px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:24px;}
  .guarantee{padding:24px 18px;}
  .cta-band{padding:28px 20px;border-radius:16px;}
  .review-card{padding:20px;}
  .f-grid{grid-template-columns:1fr;gap:28px;}
  .f-desc{max-width:none;}
}
/* <576 单列 */
@media (max-width:575.98px){
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-brand,.hero-actions .btn-line{width:100%;}
  .g-grid{grid-template-columns:1fr;gap:18px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn-accent,.cta-actions .btn-ghost{width:100%;}
  .p-foot{flex-wrap:wrap;}
  .btn-cart{width:100%;justify-content:center;}
  .drawer{width:100%;}
}

/* roulang page: article */
:root{
  --brand:#1F5FE0;
  --brand-deep:#143A8A;
  --accent:#F08A24;
  --ok:#1E9E6A;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --line:#E4E9F2;
  --ink:#101B2E;
  --ink-2:#55637A;
  --ink-3:#93A0B5;
  --soft:#EEF3FF;
  --dark:#0E1A2E;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 2px 4px rgba(16,27,46,.04), 0 12px 28px rgba(16,27,46,.06);
  --shadow-hover:0 6px 12px rgba(16,27,46,.06), 0 20px 40px rgba(16,27,46,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --ff:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --ff-num:"Inter","Barlow","PingFang SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--ff);
  font-size:15.5px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand)}
button{font:inherit;cursor:pointer}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;color:var(--ink)}
p{margin:0 0 14px}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.num{font-family:var(--ff-num);font-variant-numeric:tabular-nums}

.site-container{max-width:1200px;margin:0 auto;padding:0 24px}
@media (max-width:575px){.site-container{padding:0 16px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  padding:14px 0 10px;
  background:rgba(245,247,251,.88);
  backdrop-filter:blur(10px);
}
.nav-panel{
  display:flex;align-items:center;gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:36px;height:36px;border-radius:12px;flex:none;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 4px 10px rgba(31,95,224,.28);
}
.brand-mark svg{width:22px;height:22px;display:block}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.2px;color:var(--ink)}
.brand:hover .brand-text{color:var(--brand)}

.nav-entries{display:flex;gap:8px;margin-left:auto}
.nav-entry{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 13px;border-radius:12px;
  font-size:14px;color:var(--ink-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-entry i{font-size:13px;color:var(--ink-3);transition:color .2s var(--ease)}
.nav-entry:hover{background:var(--soft);color:var(--brand)}
.nav-entry:hover i{color:var(--brand)}
.nav-entry.active{background:var(--soft);color:var(--brand);font-weight:600}
.nav-entry.active i{color:var(--brand)}

.nav-actions{display:flex;align-items:center;gap:10px;flex:none}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#fff;border:1px solid var(--brand);
  border-radius:var(--radius-btn);padding:10px 18px;
  font-size:14px;font-weight:600;line-height:1;
  transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.btn-brand:hover,.btn-brand:focus{
  background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;
  box-shadow:0 8px 18px rgba(31,95,224,.3);transform:translateY(-1px);
}
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--accent);color:#fff;border:1px solid var(--accent);
  border-radius:var(--radius-btn);padding:11px 20px;
  font-size:15px;font-weight:600;line-height:1;
  transition:background .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.btn-accent:hover,.btn-accent:focus{
  background:#D9771C;border-color:#D9771C;color:#fff;
  box-shadow:0 10px 20px rgba(240,138,36,.3);transform:translateY(-1px);
}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--ink);border:1px solid var(--line);
  border-radius:var(--radius-btn);padding:11px 20px;
  font-size:15px;font-weight:600;line-height:1;
  transition:border-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-ghost:hover,.btn-ghost:focus{border-color:var(--brand);color:var(--brand);box-shadow:0 6px 14px rgba(31,95,224,.12)}
.btn-light-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6);
  border-radius:var(--radius-btn);padding:11px 20px;
  font-size:15px;font-weight:600;line-height:1;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.btn-light-line:hover,.btn-light-line:focus{background:rgba(255,255,255,.14);border-color:#fff;color:#fff}
.btn-menu{
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  display:grid;place-items:center;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.btn-menu:hover{border-color:var(--brand);color:var(--brand)}

/* 移动抽屉 */
.nav-drawer{background:var(--surface);border-left:1px solid var(--line);max-width:320px}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:16px 18px}
.nav-drawer .offcanvas-title{font-size:16px;font-weight:700}
.nav-drawer .offcanvas-body{padding:18px;display:flex;flex-direction:column}
.drawer-entry{
  display:flex;align-items:center;gap:10px;
  padding:13px 14px;margin-bottom:10px;
  border:1px solid var(--line);border-radius:12px;
  font-size:14.5px;color:var(--ink-2);
  transition:border-color .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.drawer-entry i{width:18px;text-align:center;color:var(--ink-3)}
.drawer-entry:hover{border-color:var(--brand);color:var(--brand);background:var(--soft)}
.drawer-entry.active{border-color:var(--brand);background:var(--soft);color:var(--brand);font-weight:600}
.drawer-entry.active i{color:var(--brand)}
.drawer-foot{padding:16px 18px;border-top:1px solid var(--line);margin-top:auto}
.drawer-foot .btn-brand{width:100%}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:26px 0 6px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;list-style:none;font-size:14px;color:var(--ink-3)}
.crumb li{display:inline-flex;align-items:center;max-width:100%}
.crumb li + li::before{content:"›";margin:0 8px;color:var(--ink-3)}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--brand)}
.crumb .current{color:var(--ink-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:340px}
@media (max-width:575px){.crumb .current{max-width:180px}}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,760px) 220px;
  gap:44px;
  justify-content:center;
  padding:14px 0 72px;
  align-items:start;
}
.article-main{min-width:0}
.article-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:36px 40px 40px;
}
@media (max-width:575px){.article-card{padding:22px 18px 26px;border-radius:var(--radius-card)}}

.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--soft);color:var(--brand);
  font-size:12.5px;font-weight:600;line-height:1;
  padding:6px 12px;border-radius:999px;
}
.tag-pill.ok{background:rgba(30,158,106,.1);color:var(--ok)}
.article-title{
  font-size:clamp(26px,3.6vw,38px);
  font-weight:800;
  line-height:1.3;
  letter-spacing:-.2px;
  margin:16px 0 16px;
  word-break:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;gap:10px 20px;
  font-size:13px;color:var(--ink-3);
  padding-bottom:20px;border-bottom:1px solid var(--line);
}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta i{color:var(--ink-3)}
.article-meta .num{font-variant-numeric:tabular-nums}

.article-figure{margin:26px 0 30px}
.article-figure .fig-box{aspect-ratio:16/9;overflow:hidden;border-radius:var(--radius-img);background:var(--soft)}
.article-figure img{width:100%;height:100%;object-fit:cover}
.article-figure figcaption{font-size:12.5px;color:var(--ink-3);margin-top:10px;text-align:center}

/* 正文排版 */
.article-content{font-size:16px;line-height:1.8;color:var(--ink-2);padding-top:6px}
.article-content > *:first-child{margin-top:0}
.article-content p{margin:0 0 16px}
.article-content h2{
  font-size:clamp(20px,2.4vw,26px);color:var(--ink);
  margin:40px 0 14px;font-weight:700;line-height:1.45;
}
.article-content h3{font-size:19px;color:var(--ink);margin:28px 0 12px;font-weight:600}
.article-content h4{font-size:16.5px;color:var(--ink);margin:22px 0 10px}
.article-content ul,.article-content ol{margin:0 0 16px;padding-left:22px}
.article-content li{margin-bottom:8px}
.article-content li::marker{color:var(--brand);font-weight:700}
.article-content blockquote{
  margin:22px 0;padding:16px 20px;
  border-left:3px solid var(--brand);
  background:#F7F9FE;border-radius:0 12px 12px 0;
  color:var(--ink-2);font-size:15.5px;
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content a{color:var(--brand);border-bottom:1px solid rgba(31,95,224,.3)}
.article-content a:hover{border-bottom-color:var(--brand)}
.article-content img{border-radius:var(--radius-img);margin:24px auto;max-width:100%;height:auto}
.article-content table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-content th,.article-content td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article-content th{background:var(--soft);color:var(--ink);font-weight:600}
.article-content td{color:var(--ink-2)}
.article-content strong{color:var(--ink)}
.article-content hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-table-wrap{overflow-x:auto;margin:24px 0}

/* 空态与占位 */
.article-empty{
  text-align:center;padding:52px 24px;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-card);
}
.article-empty .empty-icon{
  width:56px;height:56px;border-radius:18px;margin:0 auto 18px;
  display:grid;place-items:center;background:var(--soft);color:var(--brand);font-size:22px;
}
.article-empty h2{font-size:20px;margin-bottom:10px}
.article-empty p{color:var(--ink-2);font-size:14.5px;margin-bottom:20px}
.ph-lines span{display:block;height:12px;border-radius:6px;background:#EDF1F8;margin-bottom:14px}
.ph-lines span:nth-child(1){width:100%}
.ph-lines span:nth-child(2){width:94%}
.ph-lines span:nth-child(3){width:88%}
.ph-lines span:nth-child(4){width:96%}
.ph-lines span:nth-child(5){width:62%}

/* 返回入口 */
.article-foot-actions{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:36px;padding-top:26px;border-top:1px solid var(--line);
}
@media (max-width:575px){.article-foot-actions .btn-ghost{width:100%}}

/* 目录 */
.article-toc{
  position:sticky;top:96px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:18px 16px;
}
.article-toc h2{font-size:13.5px;letter-spacing:.6px;color:var(--ink);margin-bottom:12px}
.article-toc ol{list-style:none;counter-reset:toc}
.article-toc li{counter-increment:toc;margin-bottom:2px}
.article-toc a{
  display:flex;gap:8px;font-size:13.5px;line-height:1.6;
  color:var(--ink-2);padding:6px 8px;border-radius:8px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.article-toc a::before{
  content:counter(toc,decimal-leading-zero);
  font-family:var(--ff-num);font-size:12px;color:var(--ink-3);flex:none;padding-top:2px;
}
.article-toc a:hover{background:var(--soft);color:var(--brand)}
.article-toc .toc-tip{
  margin-top:14px;padding-top:14px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--ink-3);line-height:1.7;
}
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,760px);gap:0}
  .article-toc{display:none}
}

/* ---------- 板块通用 ---------- */
.section{padding:72px 0}
.section-head{max-width:720px;margin-bottom:30px}
.section-head h2{font-size:clamp(22px,3vw,32px);line-height:1.35}
.section-head p{margin:12px 0 0;color:var(--ink-2);font-size:15px}
@media (max-width:991px){.section{padding:56px 0}}
@media (max-width:575px){.section{padding:46px 0}.section-head{margin-bottom:22px}}

/* 资讯卡 */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.news-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--soft)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-title{
  font-size:16.5px;font-weight:600;line-height:1.55;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-title{color:var(--brand)}
.news-desc{
  font-size:14px;color:var(--ink-2);line-height:1.75;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--ink-3);
}
.news-foot .num{font-variant-numeric:tabular-nums}
.news-more{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:4px}
@media (max-width:991px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:575px){.news-grid{grid-template-columns:1fr}}

/* 保障条 */
.guarantee{background:var(--soft);padding:38px 0}
.g-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.g-item{display:flex;gap:12px;padding:0 22px;border-left:1px solid rgba(31,95,224,.14)}
.g-item:first-child{border-left:0;padding-left:0}
.g-icon{
  width:38px;height:38px;flex:none;border-radius:12px;
  background:#fff;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ok);font-size:15px;
}
.g-item h3{font-size:15px;margin-bottom:4px}
.g-item p{font-size:13px;color:var(--ink-2);line-height:1.65;margin:0}
@media (max-width:991px){
  .g-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 0}
  .g-item:nth-child(3){border-left:0;padding-left:0}
}
@media (max-width:575px){
  .g-grid{grid-template-columns:1fr;gap:20px}
  .g-item{border-left:0;padding:0}
}

/* CTA */
.cta-section{padding:0 0 76px}
.cta-band{
  position:relative;overflow:hidden;
  background:var(--brand);border-radius:var(--radius-lg);
  padding:38px 42px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:0 18px 40px rgba(31,95,224,.24);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(45deg,rgba(255,255,255,.07) 0 10px,transparent 10px 22px);
  opacity:.75;
}
.cta-copy{position:relative;z-index:1}
.cta-copy h2{color:#fff;font-size:clamp(20px,2.6vw,28px);margin-bottom:8px}
.cta-copy p{color:rgba(255,255,255,.84);font-size:14.5px;margin:0}
.cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex:none}
@media (max-width:767px){
  .cta-band{flex-direction:column;align-items:stretch;padding:28px 22px;gap:20px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn-accent,.cta-actions .btn-light-line{width:100%}
}

/* 页脚 */
.site-footer{background:var(--dark);color:#fff;padding:64px 0 28px}
.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}
.f-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;margin-bottom:16px}
.f-desc{color:rgba(255,255,255,.72);font-size:14px;line-height:1.8;margin:0 0 18px;max-width:320px}
.f-contact{list-style:none;font-size:13.5px;color:rgba(255,255,255,.72)}
.f-contact li{margin-bottom:9px;display:flex;align-items:center;gap:8px}
.f-contact i{color:var(--accent);width:16px;text-align:center}
.f-title{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.f-links{list-style:none}
.f-link{
  display:inline-block;padding:6px 0;font-size:14px;
  color:rgba(255,255,255,.72);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.f-link:hover{color:#fff;transform:translateX(2px)}
.f-social{margin-top:16px;display:flex;gap:10px}
.f-social a{
  width:36px;height:36px;border-radius:10px;
  border:1px solid rgba(255,255,255,.18);
  display:grid;place-items:center;color:rgba(255,255,255,.72);font-size:15px;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.f-social a:hover{color:#fff;border-color:rgba(255,255,255,.45);background:rgba(255,255,255,.08)}
.f-bottom{
  margin-top:42px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
@media (max-width:991px){.f-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}}
@media (max-width:575px){
  .site-footer{padding:48px 0 24px}
  .f-grid{grid-template-columns:1fr;gap:28px}
  .f-bottom{flex-direction:column}
}

/* roulang page: category1 */
/* =========================================================
   bb艾弗森官网 · 篮球鞋分类页
   设计变量 Design Tokens
   ========================================================= */
:root{
  --brand:#1F5FE0;
  --brand-deep:#143A8A;
  --brand-soft:#EEF3FF;
  --accent:#F08A24;
  --accent-deep:#D2740F;
  --ok:#1E9E6A;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --line:#E4E9F2;
  --ink:#101B2E;
  --ink-2:#55637A;
  --ink-3:#93A0B5;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --sh-card:0 2px 4px rgba(16,27,46,.04), 0 12px 28px rgba(16,27,46,.06);
  --sh-card-h:0 6px 12px rgba(16,27,46,.06), 0 20px 40px rgba(16,27,46,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms;
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --font-num:"Inter","Barlow","PingFang SC",system-ui,sans-serif;
}

/* ===== 基础 reset / base ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:15px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--t) var(--ease),background-color var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease);}
a:hover{color:var(--brand);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
p{margin:0 0 14px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;}
.num,.price-now,.price-old,.hero-stats dd,.num-list .n{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum";
}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* ===== 容器 ===== */
.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ===== 通用按钮 ===== */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#fff;border:1px solid var(--brand);
  border-radius:var(--r-btn);padding:11px 22px;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background-color var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),transform var(--t) var(--ease);
}
.btn-brand:hover,.btn-brand:focus{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;box-shadow:0 8px 20px rgba(31,95,224,.28);transform:translateY(-1px);}
.btn-brand:active{transform:translateY(0);box-shadow:0 4px 10px rgba(31,95,224,.22);}
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--accent);color:#fff;border:1px solid var(--accent);
  border-radius:var(--r-btn);padding:11px 22px;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background-color var(--t) var(--ease),box-shadow var(--t) var(--ease),transform var(--t) var(--ease);
}
.btn-accent:hover,.btn-accent:focus{background:var(--accent-deep);border-color:var(--accent-deep);color:#fff;box-shadow:0 8px 20px rgba(240,138,36,.32);transform:translateY(-1px);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--ink);border:1px solid var(--line);
  border-radius:var(--r-btn);padding:11px 22px;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease),box-shadow var(--t) var(--ease),transform var(--t) var(--ease);
}
.btn-ghost:hover,.btn-ghost:focus{border-color:var(--brand);color:var(--brand);box-shadow:0 6px 16px rgba(31,95,224,.12);transform:translateY(-1px);}
.btn-outline-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6);
  border-radius:var(--r-btn);padding:11px 22px;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background-color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.btn-outline-light:hover,.btn-outline-light:focus{background:rgba(255,255,255,.14);border-color:#fff;color:#fff;}

/* ===== 顶部导航（全站统一） ===== */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--bg);
  padding:14px 0 10px;
}
.nav-panel{
  display:flex;align-items:center;gap:18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  padding:12px 16px;
}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;letter-spacing:.2px;color:var(--ink);white-space:nowrap;}
.brand:hover{color:var(--brand-deep);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark svg{width:22px;height:22px;}
.nav-entries{margin:0 auto;gap:8px;}
.nav-entry{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 14px;border-radius:12px;
  font-size:14px;font-weight:500;color:var(--ink-2);
  background:#F7F9FE;border:1px solid transparent;
  transition:background-color var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease);
  white-space:nowrap;
}
.nav-entry i{font-size:14px;color:var(--ink-3);transition:color var(--t) var(--ease);}
.nav-entry:hover{background:var(--brand-soft);color:var(--brand);border-color:#DCE6FF;}
.nav-entry:hover i{color:var(--brand);}
.nav-entry.active{background:var(--brand-soft);color:var(--brand);border-color:#D3E0FF;font-weight:600;}
.nav-entry.active i{color:var(--brand);}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.btn-menu{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;
  color:var(--ink);display:inline-flex;align-items:center;justify-content:center;font-size:16px;
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease);
}
.btn-menu:hover{border-color:var(--brand);color:var(--brand);}

/* 移动端抽屉 */
.nav-drawer{--bs-offcanvas-width:300px;background:#fff;}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:16px 20px;}
.nav-drawer .offcanvas-title{font-size:16px;font-weight:700;}
.nav-drawer .offcanvas-body{padding:16px 20px;}
.drawer-nav{display:grid;gap:8px;}
.drawer-nav .nav-entry{display:flex;width:100%;justify-content:flex-start;}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--line);}
.filter-drawer{--bs-offcanvas-width:320px;background:#fff;}
.filter-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:16px 20px;}
.filter-drawer .offcanvas-title{font-size:16px;font-weight:700;}
.filter-drawer .offcanvas-body{padding:8px 20px 20px;}

/* ===== 面包屑 ===== */
.crumbs{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:14px;color:var(--ink-3);padding:10px 0 18px;
}
.crumbs a{color:var(--ink-3);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:var(--ink-3);}
.crumbs .cur{color:var(--ink-2);}

/* ===== 分类首屏 ===== */
.cat-hero{position:relative;padding:8px 0 56px;background:var(--bg);overflow:hidden;}
.cat-hero::after{
  content:"";position:absolute;right:-90px;top:-70px;width:360px;height:360px;
  background-image:radial-gradient(rgba(31,95,224,.09) 1.5px, transparent 1.5px);
  background-size:17px 17px;pointer-events:none;
}
.hero-badge{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border:1px solid #DCE6FF;border-radius:999px;
  padding:5px 14px;margin-bottom:16px;
}
.cat-hero h1{
  font-size:clamp(28px,4.4vw,44px);
  font-weight:800;line-height:1.25;letter-spacing:-.2px;
  color:var(--ink);
}
.hero-sub{font-size:16px;line-height:1.8;color:var(--ink-2);max-width:560px;margin:16px 0 24px;}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;}
.hero-stats{
  display:flex;gap:32px;flex-wrap:wrap;
  margin:32px 0 0;padding-top:22px;border-top:1px solid var(--line);
}
.hero-stats div{min-width:88px;}
.hero-stats dt{font-size:13px;color:var(--ink-3);margin-bottom:4px;}
.hero-stats dd{margin:0;font-size:22px;font-weight:700;color:var(--ink);line-height:1.3;}
.hero-figure{
  margin:0;border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-card);aspect-ratio:16/10;background:#E9EEF7;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}

/* ===== 商品区：左侧筛选 + 右侧网格 ===== */
.cat-main{padding:8px 0 72px;}
.list-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:16px;flex-wrap:wrap;margin-bottom:24px;
}
.list-head h2{font-size:clamp(22px,3vw,32px);line-height:1.35;}
.list-head p{margin:8px 0 0;font-size:14px;color:var(--ink-2);}
.list-tools{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.count-pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--ink-2);background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:7px 14px;
}

/* 筛选卡片 */
.filter-card{
  position:sticky;top:96px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-card);
  padding:20px;
}
.filter-head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:14px;border-bottom:1px solid var(--line);
}
.filter-title{font-size:16px;font-weight:700;margin:0;}
.filter-clear{font-size:13px;color:var(--brand);}
.filter-clear:hover{color:var(--brand-deep);}
.filter-group{padding:16px 0;border-bottom:1px dashed var(--line);}
.filter-group:last-of-type{border-bottom:0;}
.filter-sub{font-size:14px;font-weight:600;margin:0 0 10px;color:var(--ink);}
.chk{
  display:flex;align-items:center;gap:10px;
  padding:6px 0;font-size:14px;color:var(--ink-2);cursor:pointer;
  transition:color var(--t) var(--ease);
}
.chk:hover{color:var(--brand);}
.chk input{
  appearance:none;-webkit-appearance:none;
  width:18px;height:18px;flex:0 0 auto;position:relative;cursor:pointer;
  border:1px solid var(--line);border-radius:6px;background:#fff;
  transition:background-color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.chk input:checked{background:var(--brand);border-color:var(--brand);}
.chk input:checked::after{
  content:"";position:absolute;left:5px;top:2px;width:6px;height:10px;
  border:2px solid #fff;border-top:0;border-left:0;transform:rotate(42deg);
}
.chk input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.filter-card .btn-brand{width:100%;margin-top:18px;}

/* 商品卡 */
.p-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.p-card:hover{transform:translateY(-2px);box-shadow:var(--sh-card-h);}
.p-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:#EFF3F9;}
.p-media img{width:100%;height:100%;object-fit:cover;transition:transform 240ms var(--ease);}
.p-card:hover .p-media img{transform:scale(1.03);}
.p-badge{
  position:absolute;left:12px;top:12px;z-index:2;
  font-size:12px;font-weight:600;color:#fff;line-height:1.4;
  padding:4px 10px;border-radius:999px;
}
.badge-accent{background:var(--accent);}
.badge-ok{background:var(--ok);}
.p-body{padding:16px;display:flex;flex-direction:column;gap:8px;flex:1;}
.p-title{
  font-size:16px;font-weight:600;line-height:1.5;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.p-note{
  margin:0;font-size:14px;color:var(--ink-2);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.p-foot{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.price-now{font-size:18px;font-weight:700;color:var(--ink);}
.price-old{font-size:12px;color:var(--ink-3);text-decoration:line-through;margin-left:6px;}
.btn-cart{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--accent);color:#fff;border:1px solid var(--accent);
  border-radius:var(--r-btn);padding:9px 14px;font-size:14px;font-weight:600;
  line-height:1.2;white-space:nowrap;
  transition:background-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.btn-cart:hover,.btn-cart:focus{background:var(--accent-deep);border-color:var(--accent-deep);color:#fff;box-shadow:0 8px 18px rgba(240,138,36,.3);}

/* ===== 选购要点 ===== */
.cat-points{
  padding:76px 0;background:#fff;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:5px 13px;margin-bottom:14px;
}
.cat-points h2{font-size:clamp(22px,3vw,32px);line-height:1.35;}
.cat-points .lead{font-size:15px;color:var(--ink-2);margin:14px 0 0;}
.points-figure{
  margin:0;border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-card);aspect-ratio:4/3;background:#E9EEF7;
}
.points-figure img{width:100%;height:100%;object-fit:cover;}
.num-list{list-style:none;display:grid;gap:18px;margin-top:26px;}
.num-list li{display:flex;gap:14px;align-items:flex-start;}
.num-list .n{
  flex:0 0 auto;width:36px;height:36px;border-radius:10px;
  background:var(--brand-soft);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;
}
.num-list h3{font-size:16px;font-weight:600;margin:5px 0 4px;}
.num-list p{margin:0;font-size:14px;color:var(--ink-2);}

/* ===== 保障条 ===== */
.guarantee{padding:46px 0;background:var(--brand-soft);}
.g-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.g-item{display:flex;align-items:flex-start;gap:12px;padding:4px 22px;border-left:1px solid #D9E3F8;}
.g-item:first-child{border-left:0;padding-left:0;}
.g-item i{font-size:20px;color:var(--ok);margin-top:2px;flex:0 0 auto;}
.g-item h3{font-size:15px;font-weight:700;margin:0 0 4px;}
.g-item p{margin:0;font-size:13px;color:var(--ink-2);line-height:1.7;}

/* ===== FAQ ===== */
.faq-sec{padding:76px 0;}
.faq-sec h2{font-size:clamp(22px,3vw,32px);}
.faq-sec .sec-sub{font-size:15px;color:var(--ink-2);margin:12px 0 30px;}
.faq-list{max-width:880px;}
.faq-list .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;margin-bottom:14px;box-shadow:var(--sh-card);
}
.faq-list .accordion-button{
  position:relative;width:100%;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);
  background:#fff;border:0;padding:20px 60px 20px 22px;
  box-shadow:none;
  transition:color var(--t) var(--ease);
}
.faq-list .accordion-button:hover{color:var(--brand);}
.faq-list .accordion-button:not(.collapsed){color:var(--brand-deep);background:#fff;box-shadow:none;}
.faq-list .accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--brand);border-radius:0 3px 3px 0;
}
.faq-list .accordion-button::after{display:none;}
.faq-ico{
  position:absolute;right:20px;top:50%;margin-top:-12px;
  width:24px;height:24px;border:1px solid var(--line);border-radius:50%;
  transition:transform 240ms var(--ease),border-color var(--t) var(--ease);
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-ico::before{width:11px;height:2px;}
.faq-ico::after{width:2px;height:11px;}
.faq-list .accordion-button:not(.collapsed) .faq-ico{transform:rotate(180deg);border-color:var(--brand);}
.faq-list .accordion-body{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--ink-2);}

/* ===== CTA 条 ===== */
.cta-band{padding:0 0 76px;}
.cta-inner{
  position:relative;overflow:hidden;
  background:var(--brand);border-radius:20px;
  padding:46px 42px;
  display:flex;align-items:center;justify-content:space-between;gap:30px;
  color:#fff;box-shadow:0 18px 40px rgba(31,95,224,.20);
}
.cta-inner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.06) 0 2px,transparent 2px 12px);
}
.cta-inner h2{font-size:clamp(20px,2.6vw,28px);color:#fff;line-height:1.35;}
.cta-inner p{margin:10px 0 0;font-size:15px;line-height:1.8;color:rgba(255,255,255,.82);max-width:540px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;position:relative;z-index:1;}

/* ===== 页脚 ===== */
.site-footer{background:#0E1A2E;color:#fff;padding:64px 0 0;}
.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
.f-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:14px;}
.f-brand .brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
}
.f-brand .brand-mark svg{width:20px;height:20px;}
.f-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin:0 0 16px;}
.f-contact{list-style:none;display:grid;gap:8px;font-size:13px;color:rgba(255,255,255,.72);}
.f-contact i{color:var(--brand);margin-right:8px;width:16px;text-align:center;}
.f-title{font-size:15px;font-weight:700;color:#fff;margin:0 0 16px;}
.f-links{list-style:none;display:grid;gap:10px;}
.f-link{display:inline-block;font-size:14px;color:rgba(255,255,255,.72);}
.f-link:hover{color:#fff;transform:translateX(2px);}
.f-social{display:flex;gap:12px;margin-top:18px;}
.f-social a{
  width:36px;height:36px;border-radius:10px;border:1px solid rgba(255,255,255,.16);
  color:rgba(255,255,255,.72);display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;
}
.f-social a:hover{color:#fff;border-color:var(--brand);background:rgba(31,95,224,.22);}
.f-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ===== 响应式 ===== */
/* ≥1200：完整栅格，商品 3 列 */
@media (max-width:1199.98px){
  .f-grid{grid-template-columns:1.4fr 1fr 1fr;}
}
/* 992–1199：侧栏 + 商品 2/3 列 */
@media (max-width:991.98px){
  .cat-hero{padding:4px 0 44px;}
  .cat-points,.faq-sec{padding:52px 0;}
  .cta-band{padding:0 0 56px;}
  .g-grid{grid-template-columns:1fr 1fr;gap:22px;}
  .g-item{border-left:0;padding:0;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:34px 26px;}
  .f-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .filter-card{position:static;top:auto;}
  .hero-figure{aspect-ratio:16/10;}
}
/* ≤767：单列 / 2 列卡 */
@media (max-width:767.98px){
  .site-container{padding:0 16px;}
  .site-header{padding:10px 0 8px;}
  .nav-panel{padding:10px 12px;gap:10px;}
  .brand{font-size:16px;}
  .hero-stats{gap:22px;margin-top:26px;}
  .hero-stats dd{font-size:20px;}
  .cat-main{padding-bottom:52px;}
  .list-head{margin-bottom:18px;}
  .faq-list .accordion-button{padding:16px 54px 16px 18px;font-size:15px;}
  .faq-list .accordion-body{padding:0 18px 18px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-accent,.cta-actions .btn-outline-light{width:100%;}
  .f-bottom{flex-direction:column;align-items:flex-start;}
}
/* ≤575：单列 */
@media (max-width:575.98px){
  .g-grid{grid-template-columns:1fr;gap:18px;}
  .f-grid{grid-template-columns:1fr;gap:30px;}
  .hero-actions .btn-brand,.hero-actions .btn-ghost{width:100%;}
  .cat-hero h1{font-size:26px;}
}

/* roulang page: category2 */
/* ===== 1. 设计变量 ===== */
:root{
  --brand:#1F5FE0;
  --brand-deep:#143A8A;
  --brand-soft:#EEF3FF;
  --accent:#F08A24;
  --accent-deep:#D9761A;
  --ok:#1E9E6A;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --line:#E4E9F2;
  --ink:#101B2E;
  --ink-2:#55637A;
  --ink-3:#93A0B5;
  --dark:#0E1A2E;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 2px 4px rgba(16,27,46,.04), 0 12px 28px rgba(16,27,46,.06);
  --sh-2:0 6px 12px rgba(16,27,46,.06), 0 20px 40px rgba(16,27,46,.10);
  --sh-3:0 10px 18px rgba(16,27,46,.10), 0 28px 56px rgba(16,27,46,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms;

  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --bs-body-color:#101B2E;
  --bs-body-bg:#F5F7FB;
  --bs-primary:#1F5FE0;
  --bs-link-color:#1F5FE0;
  --bs-link-hover-color:#143A8A;
  --bs-border-color:#E4E9F2;
  --bs-border-radius:12px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
}

/* ===== 2. 基础 reset ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0 0 14px;color:var(--ink);font-weight:700;line-height:1.35;}
h1{font-size:clamp(28px,4.4vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.4px;}
h2{font-size:clamp(22px,3vw,32px);font-weight:700;}
h3{font-size:19px;font-weight:600;}
p{margin:0 0 14px;color:var(--ink-2);}
a{color:var(--brand);text-decoration:none;transition:color var(--t) var(--ease);}
a:hover{color:var(--brand-deep);}
img{max-width:100%;display:block;}
button{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.num,.price,time,.stat-num,.g-num{font-family:"Inter","Barlow",system-ui,sans-serif;font-variant-numeric:tabular-nums;}

/* ===== 3. 容器 ===== */
.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:76px 0;}
.section-sm{padding:52px 0;}
.section-head{max-width:760px;margin-bottom:34px;}
.section-head p{margin-bottom:0;font-size:15.5px;}

/* ===== 4. 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:1030;
  padding:14px 0;
  background:rgba(245,247,251,.9);
  backdrop-filter:blur(10px);
}
.nav-panel{
  display:flex;align-items:center;gap:18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:12px 16px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 6px 14px rgba(31,95,224,.28);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.2px;white-space:nowrap;}
.nav-entries{gap:6px;margin-left:6px;flex:1 1 auto;}
.nav-entry{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 14px;border-radius:12px;
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  transition:background var(--t) var(--ease),color var(--t) var(--ease);
}
.nav-entry i{font-size:13px;color:var(--ink-3);transition:color var(--t) var(--ease);}
.nav-entry:hover{background:var(--brand-soft);color:var(--brand);}
.nav-entry:hover i{color:var(--brand);}
.nav-entry.active{
  background:var(--brand-soft);color:var(--brand);
  box-shadow:inset 0 0 0 1px rgba(31,95,224,.16);
}
.nav-entry.active i{color:var(--brand);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;flex:0 0 auto;}

/* ===== 5. 按钮 ===== */
.btn-brand,.btn-accent,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 18px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.4;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),transform var(--t) var(--ease);
}
.btn-brand{background:var(--brand);color:#fff;}
.btn-brand:hover{background:var(--brand-deep);color:#fff;box-shadow:0 10px 22px rgba(20,58,138,.28);transform:translateY(-1px);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-deep);color:#fff;box-shadow:0 10px 22px rgba(240,138,36,.32);transform:translateY(-1px);}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{color:var(--brand);border-color:var(--brand);background:#fff;}
.btn-brand:active,.btn-accent:active,.btn-ghost:active{transform:translateY(0);}
.on-dark.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.on-dark.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-menu{
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease);
}
.btn-menu:hover{border-color:var(--brand);color:var(--brand);}

/* ===== 6. 移动抽屉 ===== */
.drawer{background:#fff;width:min(340px,88vw);}
.drawer .offcanvas-header{
  padding:18px 20px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-title{font-weight:800;font-size:16px;color:var(--ink);}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand);}
.drawer .offcanvas-body{padding:16px;}
.drawer .nav-entry{display:flex;width:100%;margin-bottom:8px;padding:12px 14px;}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--line);}

/* ===== 7. Banner ===== */
.banner{
  position:relative;margin-top:18px;border-radius:20px;overflow:hidden;
  box-shadow:var(--sh-1);
}
.banner img{width:100%;height:330px;object-fit:cover;}
.banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(16,27,46,.72) 0%,rgba(16,27,46,.34) 48%,rgba(16,27,46,.08) 100%);
}
.banner-card{
  position:absolute;left:32px;bottom:32px;z-index:2;
  width:min(640px,calc(100% - 64px));
  background:var(--surface);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--sh-3);
}
.banner-card h1{margin-bottom:10px;}
.banner-card p{margin-bottom:0;font-size:15px;color:var(--ink-2);}

/* ===== 8. 面包屑 ===== */
.crumbs-wrap{padding:18px 0 0;}
.crumbs{font-size:14px;color:var(--ink-3);display:flex;flex-wrap:wrap;align-items:center;gap:4px;}
.crumbs a{color:var(--ink-3);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:var(--ink-3);}
.crumbs .current{color:var(--ink-2);}

/* ===== 9. 图文交替 ===== */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 13px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;margin-bottom:14px;
}
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;
  gap:52px;align-items:center;
  padding:34px 0;
}
.feature-row + .feature-row{border-top:1px solid var(--line);}
.feature-row.reverse .feature-media{order:2;}
.feature-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-img);box-shadow:var(--sh-1);
}
.feature-copy h2{margin-bottom:12px;}
.feature-copy p{font-size:15.5px;}
.points{margin:0 0 18px;display:grid;gap:10px;}
.points li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink-2);line-height:1.7;}
.points li i{color:var(--ok);margin-top:5px;font-size:14px;flex:0 0 auto;}
.points li b{color:var(--ink);font-weight:600;}
.link-cta{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--brand);
}
.link-cta i{transition:transform var(--t) var(--ease);font-size:13px;}
.link-cta:hover i{transform:translateX(3px);}

/* ===== 10. 数据卡 ===== */
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.stat-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:box-shadow var(--t) var(--ease),transform var(--t) var(--ease);
}
.stat-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.stat-num{font-size:34px;font-weight:800;color:var(--brand-deep);line-height:1.2;margin-bottom:6px;}
.stat-card h3{font-size:16px;margin-bottom:6px;}
.stat-card p{font-size:14px;margin-bottom:0;}

/* ===== 11. 保障条 ===== */
.guarantee{background:var(--brand-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.g-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.g-item{display:flex;gap:14px;align-items:flex-start;padding:30px 24px;border-left:1px solid rgba(31,95,224,.14);}
.g-item:first-child{border-left:none;}
.g-icon{
  width:42px;height:42px;border-radius:12px;flex:0 0 auto;
  background:#fff;color:var(--ok);
  display:grid;place-items:center;font-size:16px;
  box-shadow:0 4px 10px rgba(16,27,46,.06);
}
.g-item h3{font-size:16px;margin-bottom:4px;}
.g-item p{font-size:13px;line-height:1.7;margin-bottom:0;}

/* ===== 12. FAQ ===== */
.faq-list{max-width:900px;}
.faq-list .accordion-item{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);margin-bottom:14px;overflow:hidden;
}
.faq-list .accordion-button{
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink);
  background:#fff;box-shadow:none;border-left:3px solid transparent;
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.faq-list .accordion-button:not(.collapsed){
  color:var(--brand-deep);background:#fff;border-left-color:var(--brand);
}
.faq-list .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-3px;}
.faq-list .accordion-button::after{
  content:"";width:26px;height:26px;flex:0 0 26px;margin-left:auto;
  border-radius:50%;background-color:var(--brand-soft);
  background-image:linear-gradient(var(--brand),var(--brand)),linear-gradient(var(--brand),var(--brand));
  background-size:12px 2px,2px 12px;
  background-position:center,center;
  background-repeat:no-repeat;
  transition:transform 240ms var(--ease),background-color 240ms var(--ease);
}
.faq-list .accordion-button:not(.collapsed)::after{
  transform:rotate(180deg);background-color:#DCE7FF;
}
.faq-list .accordion-body{padding:0 20px 20px;font-size:15px;color:var(--ink-2);line-height:1.8;}

/* ===== 13. CTA 条 ===== */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--brand);border-radius:20px;
  padding:38px 42px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:0 18px 40px rgba(31,95,224,.24);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.07) 0 10px,transparent 10px 22px);
}
.cta-copy{position:relative;z-index:1;max-width:620px;}
.cta-copy h2{color:#fff;margin-bottom:8px;font-size:clamp(20px,2.6vw,26px);}
.cta-copy p{color:rgba(255,255,255,.84);margin-bottom:0;font-size:15px;}
.cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex:0 0 auto;}

/* ===== 14. 页脚 ===== */
.site-footer{background:var(--dark);color:#fff;margin-top:8px;padding-top:64px;}
.site-footer .f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.f-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;margin-bottom:14px;}
.f-desc{color:rgba(255,255,255,.66);font-size:14px;line-height:1.8;margin-bottom:16px;}
.f-contact li{display:flex;align-items:center;gap:10px;font-size:13.5px;color:rgba(255,255,255,.66);margin-bottom:8px;}
.f-contact li i{color:rgba(255,255,255,.5);width:16px;}
.f-title{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.4px;}
.f-links li{margin-bottom:10px;}
.f-link{color:rgba(255,255,255,.72);font-size:14px;display:inline-block;transition:color var(--t) var(--ease),transform var(--t) var(--ease);}
.f-link:hover{color:#fff;transform:translateX(2px);}
.f-social{display:flex;gap:10px;margin-top:16px;}
.f-social a{
  width:36px;height:36px;border-radius:50%;
  border:1px solid rgba(255,255,255,.18);
  display:inline-flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.72);font-size:15px;
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease);
}
.f-social a:hover{border-color:#fff;color:#fff;}
.f-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ===== 15. 断点：<576 单列 / 576–767 两列 / 768–991 两列 / 992–1199 三列 / ≥1200 完整 ===== */
@media (max-width:1199.98px){
  .feature-row{gap:40px;}
}
@media (max-width:991.98px){
  .section{padding:58px 0;}
  .section-sm{padding:44px 0;}
  .banner img{height:280px;}
  .banner-card{position:static;width:100%;margin-top:-46px;padding:24px;}
  .banner::after{background:linear-gradient(180deg,rgba(16,27,46,.5),rgba(16,27,46,.28));}
  .feature-row{grid-template-columns:1fr;gap:26px;padding:30px 0;}
  .feature-row.reverse .feature-media{order:0;}
  .g-grid{grid-template-columns:repeat(2,1fr);}
  .g-item{border-left:none;padding:24px 20px;}
  .g-item:nth-child(odd){border-left:none;}
  .g-item:nth-child(even){border-left:1px solid rgba(31,95,224,.14);}
  .site-footer .f-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 28px;}
  .cta-actions{width:100%;flex-wrap:wrap;}
}
@media (max-width:767.98px){
  .site-container{padding:0 16px;}
  .banner{margin-top:12px;border-radius:16px;}
  .banner img{height:230px;}
  .banner-card{padding:20px;margin-top:-38px;}
  .stats-grid{grid-template-columns:1fr;}
  .faq-list .accordion-button{font-size:15px;padding:16px;}
  .faq-list .accordion-body{padding:0 16px 18px;}
  h1{letter-spacing:-.2px;}
}
@media (max-width:575.98px){
  .site-header{padding:10px 0;}
  .nav-panel{padding:10px 12px;gap:12px;}
  .brand-text{font-size:15.5px;}
  .g-grid{grid-template-columns:repeat(2,1fr);}
  .g-item{padding:18px 14px;gap:10px;}
  .g-icon{width:36px;height:36px;}
  .cta-actions .btn-brand,.cta-actions .btn-accent,.cta-actions .btn-ghost{width:100%;}
  .site-footer .f-grid{grid-template-columns:1fr;gap:28px;}
  .f-bottom{flex-direction:column;gap:6px;}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --brand:#1F5FE0;
  --brand-deep:#143A8A;
  --brand-soft:#EEF3FF;
  --brand-line:#DCE6FB;
  --accent:#F08A24;
  --ok:#1E9E6A;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --line:#E4E9F2;
  --ink:#101B2E;
  --ink-2:#55637A;
  --ink-3:#93A0B5;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --shadow-1:0 2px 4px rgba(16,27,46,.04), 0 12px 28px rgba(16,27,46,.06);
  --shadow-2:0 6px 12px rgba(16,27,46,.06), 0 20px 40px rgba(16,27,46,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --font-num:"Inter","Barlow",system-ui,sans-serif;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),transform .2s var(--ease);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);}
p{margin:0 0 14px;}
ul,ol{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ============ 容器 ============ */
.site-container{max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  padding:14px 0;
  background:rgba(245,247,251,.88);
  backdrop-filter:blur(10px);
}
.nav-panel{
  display:flex;align-items:center;gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  padding:10px 14px 10px 18px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;font-size:17px;font-weight:800;color:var(--ink);white-space:nowrap;}
.brand-text{letter-spacing:.01em;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  display:inline-flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:20px;height:20px;}
.nav-entries{flex:1 1 auto;justify-content:center;gap:8px;}
.nav-entry{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 14px;border-radius:12px;
  font-size:14px;font-weight:600;color:var(--ink-2);
  background:transparent;border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.nav-entry i{font-size:13px;color:var(--ink-3);transition:color .2s var(--ease);}
.nav-entry:hover{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-line);}
.nav-entry:hover i{color:var(--brand);}
.nav-entry.active{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-line);}
.nav-entry.active i{color:var(--brand);}
.nav-actions{flex:0 0 auto;display:flex;align-items:center;gap:10px;}
.btn-menu{
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.btn-menu:hover{border-color:var(--brand);color:var(--brand);}

/* 移动端抽屉 */
.nav-drawer{width:min(88vw,340px);}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.nav-drawer .offcanvas-body{padding:20px;display:flex;flex-direction:column;}
.drawer-entries{display:flex;flex-direction:column;gap:10px;}
.drawer-entry{
  display:flex;align-items:center;gap:12px;
  padding:14px 16px;border-radius:12px;border:1px solid var(--line);
  font-size:15px;font-weight:600;color:var(--ink-2);background:#fff;
}
.drawer-entry i{color:var(--ink-3);width:18px;text-align:center;}
.drawer-entry.active{background:var(--brand-soft);border-color:var(--brand-line);color:var(--brand);}
.drawer-entry.active i{color:var(--brand);}
.drawer-cta{margin-top:auto;padding-top:22px;}
.drawer-cta .btn-brand{width:100%;}

/* ============ 按钮 ============ */
.btn-brand,.btn-accent,.btn-ghost,.btn-lightline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:13px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  cursor:pointer;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
  text-align:center;
}
.btn-brand{background:var(--brand);color:#fff;}
.btn-brand:hover{background:var(--brand-deep);color:#fff;box-shadow:0 10px 22px rgba(31,95,224,.28);transform:translateY(-1px);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#d97612;color:#fff;box-shadow:0 10px 22px rgba(240,138,36,.30);transform:translateY(-1px);}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:#fff;}
.btn-lightline{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.btn-lightline:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-block{width:100%;}

/* ============ 通用板块 ============ */
.section{padding:76px 0;}
.section-white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
section[id]{scroll-margin-top:96px;}
[id]{scroll-margin-top:96px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--brand);background:var(--brand-soft);
  border-radius:999px;padding:5px 13px;
}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;flex-wrap:wrap;margin-bottom:34px;}
.sec-head h2{margin:12px 0 0;font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.35;}
.sec-sub{max-width:520px;margin:0;font-size:15px;line-height:1.8;color:var(--ink-2);}

/* ============ 页面头部 ============ */
.page-hero{position:relative;overflow:hidden;padding:34px 0 62px;}
.page-hero::before{
  content:"";position:absolute;right:-140px;top:-120px;width:540px;height:540px;
  border:1px solid rgba(31,95,224,.07);border-radius:50%;pointer-events:none;
}
.page-hero .site-container{position:relative;z-index:1;}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-3);margin-bottom:22px;}
.crumb a:hover{color:var(--brand);}
.crumb-sep{color:var(--ink-3);}
.crumb .current{color:var(--ink-2);}
.page-hero h1{margin:16px 0 14px;font-size:clamp(28px,4.4vw,44px);font-weight:800;line-height:1.28;}
.hero-lead{font-size:16px;line-height:1.85;color:var(--ink-2);max-width:560px;margin:0 0 24px;}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;}
.mini-facts{
  list-style:none;display:flex;flex-wrap:wrap;
  margin:26px 0 0;padding:18px 0 0;border-top:1px solid var(--line);
}
.mini-facts li{flex:1 1 120px;display:flex;flex-direction:column;gap:2px;padding-right:16px;}
.mini-facts li + li{border-left:1px solid var(--line);padding-left:18px;}
.mini-facts strong{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:21px;font-weight:700;color:var(--ink);}
.mini-facts span{font-size:13px;color:var(--ink-3);}
.hero-figure{margin:0;border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/10;box-shadow:var(--shadow-1);background:var(--brand-soft);}
.hero-figure img{width:100%;height:100%;object-fit:cover;}

/* ============ 版本对照卡 ============ */
.compare-card{
  height:100%;display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.compare-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.cc-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--brand-soft);}
.cc-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease);}
.compare-card:hover .cc-media img{transform:scale(1.03);}
.cc-badge{
  position:absolute;top:12px;left:12px;
  background:var(--accent);color:#fff;font-size:12px;font-weight:700;
  padding:4px 11px;border-radius:999px;letter-spacing:.02em;
}
.cc-badge.ok{background:var(--ok);}
.cc-badge.line{background:rgba(255,255,255,.94);color:var(--brand);}
.cc-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1;}
.cc-body h3{font-size:19px;font-weight:600;}
.cc-desc{margin:0;font-size:14px;line-height:1.8;color:var(--ink-2);}
.spec-list{
  list-style:none;margin:0;padding:14px 0 0;border-top:1px dashed var(--line);
  display:flex;flex-direction:column;gap:9px;
}
.spec-list li{display:flex;justify-content:space-between;gap:12px;font-size:14px;}
.spec-list span{color:var(--ink-3);}
.spec-list b{color:var(--ink);font-weight:600;}
.spec-list b.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}
.spec-list b.price{color:var(--accent);font-weight:700;}
.cc-body .btn-ghost{margin-top:auto;}

/* ============ 参数对照表 ============ */
.table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-1);
}
.spec-table{width:100%;min-width:700px;border-collapse:collapse;font-size:15px;}
.spec-table th,.spec-table td{padding:16px 18px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line);}
.spec-table thead th{background:var(--brand-soft);color:var(--brand-deep);font-weight:600;white-space:nowrap;}
.spec-table tbody th{width:172px;background:#FBFCFE;color:var(--ink);font-weight:600;}
.spec-table tbody td{color:var(--ink-2);}
.spec-table tbody tr:last-child th,.spec-table tbody tr:last-child td{border-bottom:none;}
.spec-table tbody tr:hover td{background:#FAFBFF;}
.spec-table .num{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--ink);font-weight:600;}
.table-note{margin:16px 0 0;font-size:13px;color:var(--ink-3);}

/* ============ 流程时间轴 ============ */
.timeline{position:relative;list-style:none;padding:0;margin:0;}
.timeline::before{
  content:"";position:absolute;left:11px;top:14px;bottom:14px;width:2px;background:var(--line);
}
.tl-item{position:relative;padding-left:46px;margin-bottom:20px;}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{
  position:absolute;left:0;top:24px;width:24px;height:24px;border-radius:50%;
  background:#fff;border:2px solid var(--brand);box-shadow:0 0 0 4px var(--brand-soft);
}
.tl-card{
  display:flex;gap:20px;align-items:stretch;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:18px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.tl-thumb{flex:0 0 190px;aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden;background:var(--brand-soft);}
.tl-thumb img{width:100%;height:100%;object-fit:cover;}
.tl-text{flex:1 1 auto;min-width:0;}
.tl-step{
  display:inline-block;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:3px 10px;margin-bottom:8px;
}
.tl-text h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.tl-text p{margin:0;font-size:14px;line-height:1.8;color:var(--ink-2);}

/* ============ 保障条 ============ */
.assurance{background:var(--brand-soft);border-top:1px solid var(--brand-line);border-bottom:1px solid var(--brand-line);padding:38px 0;}
.assurance-grid{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);}
.assurance-grid li{display:flex;gap:12px;align-items:flex-start;padding:0 22px;border-left:1px solid rgba(31,95,224,.14);}
.assurance-grid li:first-child{border-left:none;padding-left:0;}
.as-icon{
  flex:0 0 42px;width:42px;height:42px;border-radius:12px;background:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand);font-size:16px;box-shadow:0 2px 6px rgba(16,27,46,.07);
}
.as-icon.ok{color:var(--ok);}
.assurance-grid h3{font-size:15px;font-weight:600;margin:3px 0 4px;}
.assurance-grid p{margin:0;font-size:13px;line-height:1.7;color:var(--ink-2);}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;}
.faq-acc .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card) !important;
  margin-bottom:12px;overflow:hidden;
}
.faq-acc .accordion-header{margin:0;}
.faq-acc .accordion-button{
  background:#fff;color:var(--ink);font-size:16px;font-weight:600;
  padding:20px 22px;border:none;box-shadow:none;border-radius:var(--r-card) !important;
  transition:color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);background:#fff;box-shadow:inset 3px 0 0 var(--brand);}
.faq-acc .accordion-button:hover{color:var(--brand);}
.faq-acc .accordion-button:focus{outline:none;box-shadow:inset 0 0 0 2px rgba(31,95,224,.45);}
.faq-acc .accordion-button:not(.collapsed):focus{box-shadow:inset 3px 0 0 var(--brand),inset 0 0 0 2px rgba(31,95,224,.35);}
.faq-acc .accordion-button::after{
  width:28px;height:28px;border-radius:50%;flex:0 0 28px;
  background-image:linear-gradient(var(--brand),var(--brand)),linear-gradient(var(--brand),var(--brand));
  background-size:12px 2px,2px 12px;
  background-position:center center,center center;
  background-repeat:no-repeat;
  background-color:var(--brand-soft);
  transition:transform .24s var(--ease),background-color .2s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(180deg);background-color:#DCE6FB;}
.faq-acc .accordion-body{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--ink-2);}

/* ============ CTA 条 ============ */
.cta-band{position:relative;overflow:hidden;background:var(--brand);padding:56px 0;}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.07) 0 12px,transparent 12px 24px);
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:clamp(22px,3vw,30px);font-weight:700;margin-bottom:8px;}
.cta-inner p{margin:0;color:rgba(255,255,255,.82);font-size:15px;line-height:1.8;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:#0E1A2E;color:rgba(255,255,255,.72);padding:64px 0 0;}
.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px;}
.f-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;margin-bottom:14px;}
.f-desc{font-size:14px;line-height:1.9;color:rgba(255,255,255,.64);margin:0 0 18px;}
.f-contact{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px;font-size:13px;color:rgba(255,255,255,.64);}
.f-contact i{color:#7FA8FF;width:18px;margin-right:6px;}
.f-title{color:#fff;font-size:15px;font-weight:600;margin:0 0 16px;}
.f-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;font-size:14px;}
.f-link{display:inline-block;color:rgba(255,255,255,.72);}
.f-link:hover{color:#fff;transform:translateX(2px);}
.f-social{display:flex;gap:10px;margin-top:20px;}
.f-social a{
  width:36px;height:36px;border-radius:10px;border:1px solid rgba(255,255,255,.16);
  display:inline-flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.72);font-size:15px;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.f-social a:hover{background:var(--brand);border-color:var(--brand);color:#fff;}
.f-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.10);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ 断点：992–1199（3–4 列） ============ */
@media (max-width:1199.98px){
  .section{padding:68px 0;}
}

/* ============ 断点：768–991（2–3 列） ============ */
@media (max-width:991.98px){
  .site-container{padding:0 20px;}
  .nav-actions{margin-left:auto;}
  .page-hero{padding:24px 0 44px;}
  .section{padding:56px 0;}
  .sec-head{margin-bottom:26px;}
  .assurance-grid{grid-template-columns:repeat(2,1fr);gap:22px 0;}
  .assurance-grid li{padding:0 18px;}
  .assurance-grid li:nth-child(odd){border-left:none;padding-left:0;}
  .f-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}

/* ============ 断点：576–767（2 列卡） ============ */
@media (max-width:767.98px){
  .site-container{padding:0 16px;}
  .brand-text{font-size:16px;}
  .tl-card{flex-direction:column;}
  .tl-thumb{flex:0 0 auto;width:100%;}
  .tl-item{padding-left:40px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-accent,.cta-actions .btn-lightline{flex:1 1 100%;width:100%;}
}

/* ============ 断点：<576（单列） ============ */
@media (max-width:575.98px){
  body{font-size:15px;}
  .section{padding:44px 0;}
  .assurance-grid{grid-template-columns:1fr;gap:18px 0;}
  .assurance-grid li{border-left:none;padding:0;}
  .f-grid{grid-template-columns:1fr;}
  .mini-facts li{flex:1 1 100%;border-left:none !important;padding-left:0 !important;padding-right:0;}
  .mini-facts li + li{margin-top:12px;}
  .hero-actions .btn-brand,.hero-actions .btn-ghost{width:100%;}
  .f-bottom{flex-direction:column;gap:6px;}
}