/* roulang page: index */
:root{
  --ink-black:#1B1E21;
  --dark-black:#141618;
  --gray-bg:#F3F4F6;
  --gray-border:#E5E7EB;
  --gray-line:#D8DBDF;
  --gray-medium:#9CA3AF;
  --red-accent:#E63946;
  --red-dark:#C62F3A;
  --text-body:#374151;
  --text-light:#6B7280;
  --radius:4px;
  --container-w:1200px;
  --section-gap:96px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  background:#fff;
  color:var(--ink-black);
  line-height:1.6;
  font-size:15px;
}
img{max-width:100%;display:block;height:auto}
a{text-decoration:none;color:inherit;transition:color .2s ease}
button{font-family:inherit;border:none;background:none;cursor:pointer}
input{font-family:inherit}
ul,ol{list-style:none}
.container{max-width:var(--container-w);margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding:64px 0}
.section-alt{background:var(--gray-bg)}
.bg-grid-lite{
  background-image:linear-gradient(rgba(0,0,0,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(0,0,0,.03) 1px,transparent 1px);
  background-size:24px 24px;
}
.section-head{display:flex;align-items:center;gap:14px;margin-bottom:48px}
.section-head .red-sq{width:8px;height:8px;background:var(--red-accent);border-radius:1px;flex-shrink:0}
.section-head .en-label{font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:12px;color:var(--gray-medium);text-transform:uppercase;letter-spacing:1.5px;white-space:nowrap}
.section-head h2{font-size:28px;font-weight:800;color:var(--ink-black);line-height:1.2;white-space:nowrap}
.section-head .head-line{flex:1;height:1px;background:var(--gray-border);min-width:40px}
@media(max-width:767px){
  .section{padding:40px 0}
  .section-head{margin-bottom:32px;flex-wrap:wrap;gap:10px}
  .section-head h2{font-size:22px}
  .section-head .head-line{display:none}
}

/* ===== Top safety bar ===== */
.topbar{background:var(--dark-black);color:rgba(255,255,255,.72);font-size:12px;height:36px;display:flex;align-items:center}
.topbar .container{display:flex;justify-content:space-between;align-items:center}
.topbar a{color:rgba(255,255,255,.72);border-bottom:1px solid rgba(255,255,255,.25);transition:color .2s,border-color .2s}
.topbar a:hover{color:#fff;border-color:#fff}

/* ===== Main nav ===== */
.main-nav{background:#fff;border-bottom:1px solid var(--gray-border);position:sticky;top:0;z-index:80}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.site-logo{display:flex;flex-direction:column;line-height:1.15;flex-shrink:0}
.site-logo .logo-main{font-size:22px;font-weight:800;color:var(--ink-black);letter-spacing:.5px}
.site-logo .logo-main span{color:var(--red-accent)}
.site-logo .logo-sub{font-size:10px;color:var(--gray-medium);letter-spacing:2px;text-transform:uppercase;font-family:ui-monospace,monospace;margin-top:2px}
.nav-links{display:flex;gap:40px;align-items:center}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--ink-black);padding:24px 0;transition:color .2s,transform .2s}
.nav-link::after{content:'';position:absolute;bottom:18px;left:50%;transform:translateX(-50%);width:4px;height:4px;border-radius:50%;background:var(--red-accent);opacity:0;transition:opacity .25s}
.nav-link:hover{color:var(--red-accent);transform:translateY(-1px)}
.nav-link:hover::after{opacity:1}
.nav-link.active{font-weight:700;color:var(--ink-black)}
.nav-link.active::after{opacity:1}
.nav-right{display:flex;align-items:center;gap:20px;flex-shrink:0}
.nav-search{width:20px;height:20px;color:var(--ink-black);transition:color .2s;display:flex;align-items:center;justify-content:center}
.nav-search:hover{color:var(--red-accent)}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--red-accent);color:#fff;padding:14px 28px;border-radius:var(--radius);
  font-weight:700;font-size:14px;border:1px solid var(--red-accent);
  transition:background .2s,transform .2s,border-color .2s;cursor:pointer;line-height:1;
}
.btn-primary:hover{background:var(--red-dark);transform:translate(-1px,-1px);border-color:var(--red-dark)}
.btn-primary:active{box-shadow:inset 0 2px 6px rgba(0,0,0,.22);transform:translate(0,0)}
.btn-primary.btn-sm{padding:10px 20px;font-size:13px}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--ink-black);padding:14px 28px;border-radius:var(--radius);
  font-weight:700;font-size:14px;border:1px solid var(--gray-line);
  transition:border-color .2s,transform .2s,box-shadow .2s;cursor:pointer;line-height:1;
}
.btn-secondary:hover{border-color:#2A2D31;transform:translate(-1px,-1px);box-shadow:0 4px 12px rgba(0,0,0,.05)}
.btn-secondary:active{box-shadow:inset 0 2px 6px rgba(0,0,0,.08)}
.btn-outline-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:#fff;padding:14px 28px;border-radius:var(--radius);
  font-weight:700;font-size:14px;border:1px solid rgba(255,255,255,.55);
  transition:background .2s,border-color .2s;cursor:pointer;line-height:1;
}
.btn-outline-light:hover{background:rgba(255,255,255,.08);border-color:#fff}
.btn-outline-light:active{transform:translateY(1px)}
.text-link-btn{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14px;color:var(--ink-black);transition:color .2s}
.text-link-btn .arr{transition:transform .25s}
.text-link-btn:hover{color:var(--red-accent)}
.text-link-btn:hover .arr{transform:translateX(4px)}
.mobile-menu-btn{display:none;width:36px;height:36px;align-items:center;justify-content:center;border:1px solid var(--gray-border);border-radius:4px;cursor:pointer;transition:border-color .2s}
.mobile-menu-btn:hover{border-color:var(--ink-black)}
.mobile-menu-btn span{display:block;width:16px;height:1.5px;background:var(--ink-black);margin:2.5px auto;transition:background .2s}
.mobile-menu-btn:hover span{background:var(--red-accent)}

/* ===== Mobile drawer ===== */
.drawer-overlay{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:90;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s}
.drawer-overlay.show{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;left:0;bottom:0;width:288px;background:#fff;z-index:100;
  transform:translateX(-100%);transition:transform .3s ease;box-shadow:4px 0 24px rgba(0,0,0,.08);
  display:flex;flex-direction:column;overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--gray-border)}
.drawer-close{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border:1px solid var(--gray-border);border-radius:4px;font-size:16px;cursor:pointer;transition:border-color .2s,color .2s}
.drawer-close:hover{border-color:var(--red-accent);color:var(--red-accent)}
.drawer-nav{padding:12px 0;flex:1}
.drawer-nav a{display:block;padding:14px 24px;font-size:15px;font-weight:600;color:var(--ink-black);border-left:3px solid transparent;transition:border-color .2s,color .2s,background .2s}
.drawer-nav a:hover{color:var(--red-accent);background:var(--gray-bg)}
.drawer-nav a.active{border-left-color:var(--red-accent);color:var(--red-accent);background:var(--gray-bg)}
.drawer-bottom{padding:20px 24px;border-top:1px solid var(--gray-border)}
.drawer-bottom .btn-primary{width:100%}

/* ===== Hero ===== */
.hero{position:relative;min-height:100vh;min-height:600px;display:flex;align-items:center;background-color:#141618;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center 30%;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(110deg,rgba(20,22,24,.92) 25%,rgba(20,22,24,.55) 55%,rgba(20,22,24,.25) 100%);z-index:1}
.hero-content{position:relative;z-index:2;width:100%;display:flex;align-items:center;justify-content:space-between;gap:48px}
.hero-left{max-width:640px;padding:48px 0}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);border-radius:4px;padding:6px 14px;font-size:12px;color:rgba(255,255,255,.85);letter-spacing:1px;margin-bottom:28px}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--red-accent);animation:pulse-dot 2s infinite}
@keyframes pulse-dot{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(230,57,70,.4)}50%{opacity:.75;box-shadow:0 0 0 4px rgba(230,57,70,.12)}}
.hero h1{font-size:56px;font-weight:800;color:#fff;line-height:1.15;letter-spacing:-0.5px;margin-bottom:20px}
.hero h1 .hl{color:var(--red-accent)}
.hero-subtitle{font-size:17px;color:rgba(255,255,255,.72);line-height:1.7;max-width:440px;margin-bottom:40px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-card-wrap{position:relative;flex-shrink:0;width:320px;margin-bottom:40px}
.hero-card{
  background:rgba(27,30,33,.82);border:1px solid rgba(255,255,255,.16);border-radius:6px;
  padding:24px;position:relative;overflow:hidden;
}
.hero-card::before{content:'';position:absolute;top:0;left:0;width:3px;height:48px;background:var(--red-accent)}
.hero-card .card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.hero-card .card-top .tag{font-family:ui-monospace,monospace;font-size:11px;color:rgba(255,255,255,.5);letter-spacing:1px;text-transform:uppercase}
.hero-card .card-top .live{display:flex;align-items:center;gap:6px;font-size:11px;color:rgba(255,255,255,.7)}
.hero-card .card-top .live .ldot{width:6px;height:6px;border-radius:50%;background:var(--red-accent);animation:pulse-dot 1.6s infinite}
.hero-card .geo-stage{height:150px;border:1px solid rgba(255,255,255,.1);border-radius:4px;position:relative;background:linear-gradient(135deg,rgba(255,255,255,.03) 25%,transparent 25%),linear-gradient(225deg,rgba(255,255,255,.03) 25%,transparent 25%),linear-gradient(315deg,rgba(255,255,255,.03) 25%,transparent 25%),linear-gradient(45deg,rgba(255,255,255,.03) 25%,transparent 25%);background-size:16px 16px}
.hero-card .geo-block{position:absolute;border:1px solid rgba(255,255,255,.22);border-radius:2px}
.hero-card .geo-block.b1{width:72px;height:72px;top:20px;left:24px;border-color:rgba(230,57,70,.5)}
.hero-card .geo-block.b1::after{content:'';position:absolute;top:8px;left:8px;width:20px;height:20px;background:rgba(230,57,70,.25);border-radius:2px}
.hero-card .geo-block.b2{width:48px;height:48px;bottom:22px;right:26px;border-color:rgba(255,255,255,.3)}
.hero-card .geo-block.b2::after{content:'';position:absolute;bottom:6px;right:6px;width:10px;height:10px;background:rgba(255,255,255,.25)}
.hero-card .geo-circle{position:absolute;top:30px;right:36px;width:28px;height:28px;border-radius:50%;border:1px solid rgba(255,255,255,.3)}
.hero-card .geo-circle::after{content:'';position:absolute;inset:7px;border-radius:50%;background:rgba(255,255,255,.18)}
.hero-card .card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:14px;border-top:1px solid rgba(255,255,255,.1)}
.hero-card .card-foot .label{font-size:12px;color:rgba(255,255,255,.6)}
.hero-card .card-foot .value{font-family:ui-monospace,monospace;font-size:12px;color:rgba(255,255,255,.85)}
.scroll-indicator{position:absolute;bottom:36px;left:50%;transform:translateX(-50%);z-index:3;display:flex;flex-direction:column;align-items:center;gap:10px}
.scroll-indicator .scroll-line{width:1px;height:36px;background:linear-gradient(to bottom,rgba(255,255,255,.45),rgba(255,255,255,0));display:block}
.scroll-indicator .scroll-text{font-size:10px;color:rgba(255,255,255,.45);letter-spacing:3px;font-family:ui-monospace,monospace}

/* ===== Stats bar ===== */
.stats-bar{background:var(--dark-black);padding:48px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-item{text-align:center;padding:16px;border-right:1px solid rgba(255,255,255,.14)}
.stat-item:last-child{border-right:none}
.stat-num{font-size:32px;font-weight:800;color:#fff;line-height:1.2}
.stat-num em{font-style:normal;color:var(--red-accent)}
.stat-num .unit{font-size:16px;color:rgba(255,255,255,.55);font-weight:600;margin-left:2px}
.stat-label{font-size:13px;color:rgba(255,255,255,.5);margin-top:6px;letter-spacing:.5px}
@media(max-width:767px){
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:0}
  .stat-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.08);padding:20px 12px}
  .stat-item:nth-child(odd){border-right:1px solid rgba(255,255,255,.08)}
  .stat-item:nth-child(3),.stat-item:nth-child(4){border-bottom:none}
  .stat-num{font-size:24px}
}

/* ===== Product cards ===== */
.prod-card{background:#fff;border:1px solid var(--gray-border);border-radius:var(--radius);overflow:hidden;position:relative;transition:border-color .3s,box-shadow .3s,transform .3s}
.prod-card:hover{border-color:#2A2D31;box-shadow:0 8px 28px rgba(0,0,0,.06);transform:translateY(-2px)}
.prod-card .corner-mark{position:absolute;top:12px;right:12px;width:8px;height:8px;background:var(--red-accent);z-index:2;border-radius:1px}
.prod-img{overflow:hidden;position:relative;background:var(--gray-bg)}
.prod-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.prod-card:hover .prod-img img{transform:scale(1.03)}
.prod-card-lg .prod-img{height:240px}
.prod-card-md .prod-img{height:160px}
.prod-card-sm .prod-img{height:140px}
.prod-body{padding:20px 22px 24px}
.prod-tags{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap}
.prod-tag{display:inline-flex;align-items:center;gap:5px;font-size:11px;color:var(--text-light);border:1px solid var(--gray-border);border-radius:2px;padding:3px 8px;background:var(--gray-bg)}
.prod-tag::before{content:'';width:5px;height:5px;background:var(--red-accent);border-radius:1px;flex-shrink:0}
.prod-body h3{font-size:19px;font-weight:800;color:var(--ink-black);margin-bottom:8px;line-height:1.35}
.prod-body p{font-size:13px;color:var(--text-light);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.prod-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto}

/* ===== News section ===== */
.news-large-card{display:block;background:#fff;border:1px solid var(--gray-border);border-radius:var(--radius);overflow:hidden;transition:border-color .3s,box-shadow .3s}
.news-large-card:hover{border-color:#2A2D31;box-shadow:0 8px 24px rgba(0,0,0,.05)}
.news-large-card .news-img{height:220px;overflow:hidden;background:var(--gray-bg)}
.news-large-card .news-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-large-card:hover .news-img img{transform:scale(1.03)}
.news-large-card .news-body{padding:24px 26px 28px}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:12px;font-size:12px;color:var(--gray-medium)}
.news-cat{display:inline-flex;align-items:center;background:var(--ink-black);color:#fff;font-size:11px;padding:3px 10px;border-radius:2px;letter-spacing:.5px}
.news-cat::before{content:'';width:5px;height:5px;background:var(--red-accent);margin-right:6px}
.news-large-card h3{font-size:23px;font-weight:800;color:var(--ink-black);line-height:1.4;margin-bottom:12px;transition:color .2s}
.news-large-card:hover h3{color:var(--red-accent)}
.news-large-card .news-summary{font-size:14px;color:var(--text-light);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-list-item{display:flex;align-items:center;gap:16px;padding:16px 4px;border-bottom:1px solid var(--gray-border);transition:background .2s}
.news-list-item:last-child{border-bottom:none}
.news-list-item:hover{background:rgba(243,244,246,.5)}
.news-list-date{flex-shrink:0;width:52px;text-align:center;border-right:1px solid var(--gray-border);padding-right:14px;margin-right:2px}
.news-list-date .day{display:block;font-size:22px;font-weight:800;color:var(--ink-black);line-height:1.1;transition:color .2s}
.news-list-date .mon{display:block;font-size:11px;color:var(--gray-medium);text-transform:uppercase;letter-spacing:1px}
.news-list-item:hover .news-list-date .day{color:var(--red-accent)}
.news-list-item .content{flex:1;min-width:0}
.news-list-item .content h4{font-size:14px;font-weight:600;color:var(--ink-black);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:4px;transition:color .2s}
.news-list-item:hover .content h4{color:var(--red-accent)}
.news-list-item .content p{font-size:12px;color:var(--gray-medium);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.news-list-item .arrow{flex-shrink:0;color:var(--gray-medium);font-size:16px;transition:color .2s,transform .2s}
.news-list-item:hover .arrow{color:var(--red-accent);transform:translateX(4px)}
.empty-news-box{border:2px dashed var(--gray-border);background:rgba(243,244,246,.6);border-radius:var(--radius);padding:56px 32px;text-align:center;color:var(--gray-medium);font-size:14px;letter-spacing:.5px}

/* ===== Testimonials ===== */
.testi-track{display:flex;gap:24px;overflow-x:auto;padding:4px 2px 16px;scrollbar-width:none}
.testi-track::-webkit-scrollbar{display:none}
.testi-card{flex:0 0 320px;background:#fff;border:1px solid var(--gray-border);border-radius:var(--radius);padding:28px 26px;transition:border-color .3s,box-shadow .3s;display:flex;flex-direction:column}
.testi-card:hover{border-color:#2A2D31;box-shadow:0 8px 24px rgba(0,0,0,.05)}
.testi-quote{font-family:Georgia,serif;font-size:44px;color:var(--gray-border);line-height:.7;margin-bottom:16px}
.testi-card blockquote{font-size:14px;color:var(--text-body);line-height:1.8;flex:1;margin-bottom:20px}
.testi-person{display:flex;align-items:center;gap:12px}
.testi-avatar{width:40px;height:40px;border-radius:50%;background:var(--gray-bg);border:1px solid var(--gray-border);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:var(--gray-medium);flex-shrink:0}
.testi-person .p-name{font-size:13px;font-weight:700;color:var(--ink-black)}
.testi-person .p-role{font-size:11px;color:var(--gray-medium)}
.testi-track-wrap{position:relative}
.testi-arrows{display:flex;gap:8px;justify-content:flex-end;margin-bottom:20px}
.testi-arrow{width:32px;height:32px;border:1px solid var(--gray-border);border-radius:4px;display:flex;align-items:center;justify-content:center;color:var(--ink-black);cursor:pointer;transition:border-color .2s,color .2s,background .2s}
.testi-arrow:hover{border-color:var(--red-accent);color:var(--red-accent)}

/* ===== Guarantee ===== */
.guarantee-section{background:var(--gray-bg);border-top:1px solid var(--gray-border);border-bottom:1px solid var(--gray-border)}
.guarantee-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.guarantee-item{padding:36px 28px;text-align:center;border-right:1px solid var(--gray-border);transition:background .3s}
.guarantee-item:last-child{border-right:none}
.guarantee-item:hover{background:#fff}
.guarantee-item .g-icon{width:48px;height:48px;margin:0 auto 18px;display:flex;align-items:center;justify-content:center;color:var(--gray-medium);transition:color .3s}
.guarantee-item:hover .g-icon{color:var(--red-accent)}
.guarantee-item h3{font-size:16px;font-weight:700;color:var(--ink-black);margin-bottom:8px}
.guarantee-item p{font-size:13px;color:var(--text-light);line-height:1.65}
@media(max-width:1023px){
  .guarantee-grid{grid-template-columns:repeat(2,1fr)}
  .guarantee-item:nth-child(2){border-right:none}
  .guarantee-item:nth-child(3){border-left:none;border-bottom:none}
  .guarantee-item:nth-child(4){border-right:none;border-bottom:none}
  .guarantee-item{border-bottom:1px solid var(--gray-border)}
}
@media(max-width:767px){
  .guarantee-grid{grid-template-columns:1fr}
  .guarantee-item{border-right:none;border-bottom:1px solid var(--gray-border)}
  .guarantee-item:last-child{border-bottom:none}
}

/* ===== FAQ ===== */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--gray-border)}
.faq-item:first-child{border-top:1px solid var(--gray-border)}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 8px;font-size:16px;font-weight:700;color:var(--ink-black);display:flex;justify-content:space-between;align-items:center;gap:16px;transition:color .2s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--red-accent)}
.faq-item summary .faq-plus{flex-shrink:0;width:20px;height:20px;border:1px solid var(--gray-border);border-radius:2px;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--gray-medium);transition:transform .3s,border-color .3s,color .3s}
.faq-item[open] summary .faq-plus{transform:rotate(45deg);border-color:var(--red-accent);color:var(--red-accent)}
.faq-item .faq-ans{padding:0 8px 22px;font-size:14px;color:var(--text-light);line-height:1.85;max-width:92%}

/* ===== CTA ===== */
.cta-section{background:var(--dark-black);padding:80px 0;position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.12;filter:grayscale(1)}
.cta-section::after{content:'';position:absolute;inset:0;background:linear-gradient(to right,rgba(20,22,24,.92),rgba(20,22,24,.7))}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:720px;margin:0 auto}
.cta-inner .cta-red-line{width:36px;height:3px;background:var(--red-accent);margin:0 auto 24px}
.cta-inner h2{font-size:32px;font-weight:800;color:#fff;line-height:1.3;margin-bottom:16px}
.cta-inner p{font-size:15px;color:rgba(255,255,255,.55);line-height:1.7;margin-bottom:36px}
.cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
@media(max-width:767px){
  .cta-section{padding:56px 0}
  .cta-inner h2{font-size:24px}
}

/* ===== Footer ===== */
.site-footer{background:var(--dark-black);color:rgba(255,255,255,.65);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;padding-bottom:48px}
.footer-brand .logo-main{font-size:24px;font-weight:800;color:#fff}
.footer-brand .logo-main span{color:var(--red-accent)}
.footer-brand .logo-sub{font-size:10px;color:rgba(255,255,255,.4);font-family:ui-monospace,monospace;letter-spacing:2px;text-transform:uppercase;margin-top:4px;display:block}
.footer-brand p{font-size:13px;line-height:1.75;color:rgba(255,255,255,.5);margin-top:18px;max-width:320px}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:.5px;position:relative;padding-bottom:10px}
.footer-col h3::after{content:'';position:absolute;left:0;bottom:0;width:20px;height:2px;background:var(--red-accent)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:13px;color:rgba(255,255,255,.55);transition:color .2s,padding-left .2s}
.footer-col ul a:hover{color:#fff;padding-left:4px}
.footer-red-line{height:1px;background:linear-gradient(to right,var(--red-accent) 0%,rgba(230,57,70,.15) 60%,transparent 100%);border:none}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding:24px 0 28px;font-size:12px;color:rgba(255,255,255,.35);gap:16px;flex-wrap:wrap}
.footer-bottom a{color:rgba(255,255,255,.35);transition:color .2s}
.footer-bottom a:hover{color:#fff}
@media(max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media(max-width:767px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;text-align:center}
}

/* ===== Breadcrumb ===== */
.breadcrumb{font-size:12px;color:var(--gray-medium);margin-bottom:16px;display:flex;align-items:center;flex-wrap:wrap;gap:6px}
.breadcrumb a{color:var(--gray-medium)}
.breadcrumb a:hover{color:var(--red-accent)}
.breadcrumb .sep{color:var(--gray-border);margin:0 2px}
.breadcrumb .current{color:var(--ink-black);font-weight:500}

/* ===== Responsive ===== */
@media(max-width:1023px){
  .nav-links{display:none}
  .mobile-menu-btn{display:flex}
  .nav-search{display:none}
  .hero{min-height:auto;padding:80px 0 60px}
  .hero h1{font-size:40px}
  .hero-card-wrap{display:none}
  .hero-content{justify-content:center;text-align:center}
  .hero-left{max-width:640px;margin:0 auto}
  .hero-subtitle{margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center}
  .hero-badge{justify-content:center}
}
@media(max-width:767px){
  .container{padding-left:18px;padding-right:18px}
  .topbar{display:none}
  .nav-inner{height:60px}
  .site-logo .logo-main{font-size:18px}
  .site-logo .logo-sub{font-size:9px}
  .hero{padding:64px 0 44px}
  .hero h1{font-size:30px}
  .hero-subtitle{font-size:15px}
  .btn-primary{padding:11px 22px;font-size:13px}
  .btn-secondary,.btn-outline-light{padding:11px 22px;font-size:13px}
  .stat-num{font-size:22px}
  .prod-body{padding:16px 18px 20px}
  .news-large-card h3{font-size:18px}
  .news-large-card .news-img{height:170px}
  .container{padding-left:16px;padding-right:16px}
}

/* roulang page: article */
:root {
  --black: #1B1E21;
  --dark: #141618;
  --gray-bg: #F3F4F6;
  --border: #E5E7EB;
  --gray-text: #9CA3AF;
  --red: #E63946;
  --red-dark: #C62F3A;
  --radius: 4px;
  --line: #D8DBDF;
  --text-body: #374151;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #fff;
  color: var(--black);
  line-height: 1.6;
  font-size: 16px;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
.container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }

/* ===== Header & Nav ===== */
.site-header { position: sticky; top: 0; z-index: 50; background: #fff; border-bottom: 1px solid var(--border); }
.topbar { background: var(--dark); color: #fff; font-size: 12px; padding: 8px 0; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; }
.topbar-left { opacity: 0.85; }
.topbar-right { display: flex; gap: 16px; }
.main-nav { height: 72px; display: flex; align-items: center; justify-content: space-between; }
.site-logo { display: flex; flex-direction: column; line-height: 1.2; }
.logo-main { font-weight: 800; font-size: 20px; color: var(--black); letter-spacing: 0.02em; }
.logo-main span { color: var(--red); }
.logo-sub { font-size: 11px; color: var(--gray-text); text-transform: uppercase; letter-spacing: 0.08em; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-link { position: relative; font-size: 15px; font-weight: 500; color: var(--black); padding: 6px 2px; transition: color 0.25s; }
.nav-link::after { content: ''; position: absolute; left: 0; bottom: -2px; width: 100%; height: 2px; background: var(--red); transform: scaleX(0); transition: transform 0.3s; }
.nav-link:hover { color: var(--red); }
.nav-link.active::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 16px; }
.search-icon { color: var(--black); padding: 6px; transition: color 0.25s; display: flex; }
.search-icon:hover { color: var(--red); }
.btn-login { background: var(--red); color: #fff; font-weight: 700; font-size: 14px; padding: 10px 22px; border-radius: var(--radius); transition: all 0.25s; display: inline-block; }
.btn-login:hover { background: var(--red-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(230, 57, 70, 0.25); }
.hamburger { display: none; color: var(--black); padding: 4px; }
.mobile-overlay { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.5); z-index: 150; display: none; }
.mobile-overlay.open { display: block; }
.mobile-menu { position: fixed; top: 0; left: 0; width: 280px; height: 100vh; background: #fff; z-index: 200; padding: 32px 24px; transform: translateX(-100%); transition: transform 0.35s ease; box-shadow: 4px 0 24px rgba(0, 0, 0, 0.08); }
.mobile-menu.open { transform: translateX(0); }
.mobile-menu-links { display: flex; flex-direction: column; gap: 12px; margin-top: 28px; }
.mobile-menu-links a { font-size: 16px; font-weight: 600; padding: 10px 0; border-bottom: 1px solid var(--border); }
.mobile-menu-links a:hover { color: var(--red); }

/* ===== Breadcrumb ===== */
.crumb { padding: 24px 0 16px; font-size: 12px; color: var(--gray-text); }
.crumb a { transition: color 0.2s; }
.crumb a:hover { color: var(--red); }
.crumb .current { color: var(--black); font-weight: 500; }
.crumb .sep-crumb { margin: 0 8px; color: var(--border); }

/* ===== Article Section ===== */
.article-section { padding-bottom: 32px; }
.article-wrap { max-width: 900px; margin: 0 auto; }
.article-header { padding: 8px 0 24px; }
.article-category { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 700; color: var(--red); background: #FEF2F2; border-radius: 20px; padding: 4px 14px; margin-bottom: 16px; }
.article-category .dot { width: 8px; height: 8px; background: var(--red); border-radius: 50%; }
.article-title { font-size: 40px; font-weight: 800; line-height: 1.25; color: var(--black); margin-bottom: 16px; letter-spacing: -0.01em; }
.article-meta { display: flex; flex-wrap: wrap; gap: 12px; font-size: 13px; color: var(--gray-text); align-items: center; }
.article-meta .meta-sep { width: 1px; height: 12px; background: var(--border); }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-cover { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); aspect-ratio: 16 / 9; background: var(--gray-bg); margin-bottom: 32px; }
.article-cover img { width: 100%; height: 100%; object-fit: cover; }
.article-body { max-width: 760px; margin: 0 auto; font-size: 16px; line-height: 1.9; color: var(--text-body); }
.article-body p { margin-bottom: 24px; }
.article-body h2 { font-size: 24px; font-weight: 800; color: var(--black); margin: 40px 0 16px; padding-left: 14px; border-left: 4px solid var(--red); }
.article-body h3 { font-size: 20px; font-weight: 700; color: var(--black); margin: 32px 0 12px; }
.article-body ul { margin-bottom: 24px; }
.article-body ul li { position: relative; padding-left: 22px; margin-bottom: 8px; }
.article-body ul li::before { content: ''; position: absolute; left: 4px; top: 10px; width: 6px; height: 6px; background: var(--red); }
.article-body ol { margin-bottom: 24px; padding-left: 24px; list-style: decimal; }
.article-body blockquote { border-left: 2px solid var(--red); background: #F9FAFB; padding: 16px 20px; font-size: 14px; color: #6B7280; margin-bottom: 24px; border-radius: 0 var(--radius) var(--radius) 0; }
.article-body code { font-family: ui-monospace, SFMono-Regular, monospace; font-size: 13px; background: var(--dark); color: #fff; padding: 2px 8px; border-radius: 4px; }
.article-body pre { background: var(--dark); color: #EDEDED; padding: 20px; border-radius: 4px; overflow-x: auto; margin-bottom: 24px; font-size: 13px; line-height: 1.7; }
.article-body pre code { background: transparent; padding: 0; }
.article-body img { border-radius: var(--radius); margin: 24px 0; }
.article-body figcaption { font-size: 12px; color: var(--gray-text); text-align: center; margin-top: -16px; margin-bottom: 24px; }
.article-body a { color: var(--red); border-bottom: 1px solid rgba(230, 57, 70, 0.3); transition: border-color 0.2s; }
.article-body a:hover { border-color: var(--red); }

/* ===== Tag Cloud ===== */
.tag-cloud { max-width: 760px; margin: 40px auto 0; display: flex; flex-wrap: wrap; gap: 8px; padding-top: 24px; border-top: 1px solid var(--border); }
.tag-item { display: inline-block; font-size: 13px; padding: 6px 14px; border: 1px solid var(--line); border-radius: 999px; color: var(--gray-text); transition: all 0.25s; }
.tag-item:hover { border-color: var(--red); color: var(--red); }

/* ===== Post Nav ===== */
.post-nav { max-width: 760px; margin: 32px auto 0; display: flex; gap: 16px; }
.post-prev, .post-next { flex: 1; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; transition: all 0.3s; display: flex; flex-direction: column; gap: 8px; background: #FAFAFA; }
.post-prev:hover, .post-next:hover { border-color: var(--black); background: #fff; transform: translateY(-2px); box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04); }
.post-nav-label { font-size: 12px; color: var(--gray-text); display: flex; align-items: center; gap: 6px; }
.post-nav-title { font-size: 15px; font-weight: 700; color: var(--black); line-height: 1.4; }
.post-prev:hover .post-nav-label, .post-next:hover .post-nav-label { color: var(--red); }
.post-prev:hover .post-nav-title, .post-next:hover .post-nav-title { color: var(--red); }

/* ===== Section Head ===== */
.section-head { display: flex; align-items: center; gap: 12px; margin-bottom: 32px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.section-dot { width: 8px; height: 8px; background: var(--red); flex-shrink: 0; }
.section-en { font-family: ui-monospace, Menlo, monospace; font-size: 12px; color: var(--gray-text); text-transform: uppercase; letter-spacing: 0.06em; }
.section-head h2 { font-size: 28px; font-weight: 800; color: var(--black); margin: 0; }

/* ===== Related ===== */
.related-section { padding: 48px 0 64px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: #fff; transition: all 0.3s; display: flex; flex-direction: column; }
.related-card:hover { border-color: var(--black); box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06); }
.related-card img { aspect-ratio: 16 / 9; object-fit: cover; transition: transform 0.5s; }
.related-card:hover img { transform: scale(1.02); }
.related-body { padding: 16px 20px 20px; flex: 1; display: flex; flex-direction: column; }
.related-title { font-size: 16px; font-weight: 700; line-height: 1.5; color: var(--black); margin-bottom: 8px; transition: color 0.2s; }
.related-card:hover .related-title { color: var(--red); }
.related-date { font-size: 12px; color: var(--gray-text); margin-top: auto; }

/* ===== CTA ===== */
.cta-section { background: var(--dark); color: #fff; padding: 64px 0; text-align: center; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity: 0.12; pointer-events: none; }
.cta-title { font-size: 28px; font-weight: 800; margin-bottom: 12px; position: relative; }
.cta-desc { font-size: 14px; color: rgba(255, 255, 255, 0.7); margin-bottom: 32px; position: relative; }
.cta-actions { display: flex; justify-content: center; gap: 16px; position: relative; }
.btn-white { border: 1px solid rgba(255, 255, 255, 0.6); color: #fff; padding: 14px 28px; border-radius: var(--radius); font-weight: 700; transition: all 0.25s; display: inline-block; }
.btn-white:hover { background: rgba(255, 255, 255, 0.1); transform: translateY(-1px); }

/* ===== Not Found ===== */
.not-found { max-width: 640px; margin: 80px auto; text-align: center; padding: 48px 32px; border: 1px dashed var(--line); border-radius: var(--radius); background: var(--gray-bg); }
.not-found p { font-size: 20px; font-weight: 700; color: var(--black); margin-bottom: 16px; }
.not-found a { display: inline-block; font-size: 14px; color: var(--red); border-bottom: 1px solid var(--red); padding-bottom: 2px; transition: opacity 0.2s; }
.not-found a:hover { opacity: 0.7; }

/* ===== Footer ===== */
.site-footer { background: var(--dark); color: #C7CCD1; padding: 64px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .site-logo { margin-bottom: 16px; }
.footer-brand .logo-main { color: #fff; }
.footer-brand p { font-size: 13px; line-height: 1.8; color: rgba(255, 255, 255, 0.6); max-width: 340px; }
.footer-col h3 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 13px; color: rgba(255, 255, 255, 0.6); transition: color 0.2s; }
.footer-col a:hover { color: var(--red); }
.footer-red-line { border: none; border-top: 1px solid var(--red); opacity: 0.6; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding: 20px 0; font-size: 12px; color: rgba(255, 255, 255, 0.5); flex-wrap: wrap; gap: 12px; }
.footer-bottom a { color: rgba(255, 255, 255, 0.5); }
.footer-bottom a:hover { color: var(--red); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .nav-links { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .topbar-right { display: none; }
  .nav-links { display: none; }
  .header-actions .search-icon { display: none; }
  .hamburger { display: block; }
  .main-nav { height: 64px; }
  .article-title { font-size: 30px; }
  .article-wrap { padding: 0 4px; }
  .post-nav { flex-direction: column; }
  .related-grid { grid-template-columns: 1fr; }
  .cta-section { padding: 48px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-brand p { max-width: none; }
}
@media (max-width: 520px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .article-title { font-size: 26px; }
  .article-meta { flex-wrap: wrap; }
  .section-head h2 { font-size: 24px; }
  .cta-title { font-size: 22px; }
}

/* Focus states for accessibility */
a:focus-visible, button:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; border-radius: 2px; }
.btn-login:active, .btn-white:active { transform: translateY(1px); box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2); }

/* roulang page: category1 */
:root {
  --ink: #1B1E21;
  --ink-deep: #141618;
  --ink-soft: #2A2D31;
  --gray-bg: #F3F4F6;
  --gray-line: #E5E7EB;
  --gray-border: #D8DBDF;
  --gray-mid: #9CA3AF;
  --gray-text: #5F6670;
  --red: #E63946;
  --red-dark: #C62F3A;
  --white: #FFFFFF;
  --radius: 4px;
  --font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --transition: all .2s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font); color: var(--ink); background: var(--white); line-height: 1.6; font-size: 16px; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }

/* 顶栏 */
.topbar { background: var(--ink-deep); color: rgba(255,255,255,.78); font-size: 12px; border-bottom: 1px solid rgba(255,255,255,.08); }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; height: 36px; }
.topbar-tel { color: rgba(255,255,255,.55); letter-spacing: .4px; }

/* 主导航 */
.site-header { position: sticky; top: 0; z-index: 100; background: var(--white); border-bottom: 1px solid var(--gray-line); }
.nav-wrap { display: flex; align-items: center; height: 72px; gap: 48px; }
.site-logo { display: flex; flex-direction: column; line-height: 1.2; flex-shrink: 0; }
.logo-main { font-size: 20px; font-weight: 800; color: var(--ink); letter-spacing: .5px; }
.logo-main span { color: var(--red); margin: 0 2px; }
.logo-sub { font-size: 11px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--gray-mid); font-family: var(--mono); margin-top: 3px; }
.nav-links { display: flex; gap: 36px; align-items: center; }
.nav-link { position: relative; font-size: 15px; font-weight: 600; color: var(--ink); padding: 26px 0; }
.nav-link::after { content: ""; position: absolute; left: 50%; bottom: 8px; width: 4px; height: 4px; border-radius: 50%; background: var(--red); transform: translateX(-50%) scale(0); transition: var(--transition); }
.nav-link:hover { color: var(--red); transform: translateY(-1px); }
.nav-link.active::after { transform: translateX(-50%) scale(1); }
.nav-actions { display: flex; align-items: center; gap: 20px; margin-left: auto; }

/* 按钮 */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-weight: 700; border-radius: var(--radius); transition: var(--transition); letter-spacing: .3px; }
.btn-primary { background: var(--red); color: #fff; padding: 14px 28px; font-size: 14px; }
.btn-primary:hover { background: var(--red-dark); transform: translate(-2px,-2px); box-shadow: 3px 3px 0 rgba(0,0,0,.12); }
.btn-primary:active { transform: translate(0,0); box-shadow: inset 0 2px 5px rgba(0,0,0,.22); }
.btn-outline { background: transparent; border: 1px solid var(--gray-border); color: var(--ink); padding: 14px 28px; font-size: 14px; }
.btn-outline:hover { border-color: var(--ink-soft); transform: translate(-2px,-2px); }
.btn-outline:active { transform: translate(0,0); }
.btn-light { border-color: rgba(255,255,255,.72); color: #fff; }
.btn-light:hover { border-color: #fff; background: rgba(255,255,255,.08); }

/* 页头横幅 */
.page-banner { background-color: var(--ink-deep); background-image: url('/assets/images/backpic/back-1.png'); background-size: cover; background-position: center; padding: 80px 0 72px; position: relative; }
.page-banner::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(20,22,24,.94) 0%, rgba(20,22,24,.72) 46%, rgba(20,22,24,.30) 100%); }
.page-banner .container { position: relative; z-index: 1; }
.breadcrumb { font-size: 12px; color: rgba(255,255,255,.55); margin-bottom: 30px; display: flex; gap: 10px; align-items: center; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .current { color: rgba(255,255,255,.9); }
.page-banner h1 { font-size: 36px; font-weight: 800; color: #fff; letter-spacing: 1px; margin-bottom: 14px; }
.banner-desc { font-size: 15px; color: rgba(255,255,255,.76); max-width: 560px; line-height: 1.8; }

/* 区块标题 */
.section-head { display: flex; align-items: center; gap: 12px; margin-bottom: 40px; border-bottom: 1px solid var(--gray-line); padding-bottom: 20px; flex-wrap: wrap; }
.sec-mark { width: 8px; height: 8px; background: var(--red); flex-shrink: 0; }
.sec-label { font-family: var(--mono); font-size: 12px; color: var(--gray-mid); letter-spacing: 1.4px; text-transform: uppercase; }
.sec-title { font-size: 28px; font-weight: 800; color: var(--ink); margin-left: 4px; }
.sec-line { flex: 1; height: 1px; background: var(--gray-line); }

/* 产品区 */
.prod-section { padding: 72px 0 96px; }
.filter-bar { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 36px; }
.filter-item { display: inline-flex; align-items: center; gap: 8px; padding: 10px 22px; border: 1px solid var(--gray-border); border-radius: var(--radius); font-size: 14px; font-weight: 600; color: var(--gray-text); background: var(--white); transition: var(--transition); }
.filter-item::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--red); opacity: 0; transition: var(--transition); }
.filter-item:hover { border-color: var(--ink-soft); color: var(--ink); }
.filter-item.active { border-color: var(--ink); color: var(--ink); }
.filter-item.active::before { opacity: 1; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.product-card { background: #fff; border: 1px solid var(--gray-line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: var(--transition); }
.product-card:hover { border-color: var(--ink-soft); transform: translateY(-4px); box-shadow: 4px 4px 0 rgba(20,22,24,.06); }
.p-card-cover { position: relative; overflow: hidden; aspect-ratio: 16 / 10; background: var(--gray-bg); }
.p-card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.product-card:hover .p-card-cover img { transform: scale(1.03); }
.corner-mark { position: absolute; top: 12px; left: 12px; width: 8px; height: 8px; background: var(--red); z-index: 2; }
.p-card-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.p-card-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.p-card-body .p-desc { font-size: 14px; color: var(--gray-text); line-height: 1.7; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.p-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.tag { font-size: 12px; padding: 4px 10px; background: var(--gray-bg); border: 1px solid var(--gray-line); border-radius: 2px; color: var(--gray-text); white-space: nowrap; }
.p-link { margin-top: auto; font-size: 14px; font-weight: 700; color: var(--ink); display: inline-flex; align-items: center; gap: 6px; width: fit-content; }
.p-link span { transition: transform .2s ease; }
.p-link:hover { color: var(--red); }
.p-link:hover span { transform: translateX(4px); }

/* 核心能力 */
.feature-section { background: var(--gray-bg); padding: 96px 0; border-top: 1px solid var(--gray-line); border-bottom: 1px solid var(--gray-line); }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card { background: #fff; border: 1px solid var(--gray-line); border-radius: var(--radius); padding: 30px 24px; transition: var(--transition); }
.feature-card:hover { border-color: var(--ink-soft); transform: translateY(-3px); box-shadow: 3px 3px 0 rgba(20,22,24,.05); }
.feat-icon { width: 46px; height: 46px; border: 1px solid var(--gray-border); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; }
.feat-icon svg { stroke: var(--gray-mid); transition: var(--transition); }
.feature-card:hover .feat-icon svg { stroke: var(--red); }
.feature-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 13.5px; color: var(--gray-text); line-height: 1.75; }

/* 数据信任条 */
.stats-band { background: var(--ink-deep); padding: 56px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat-item { text-align: center; padding: 12px 24px; border-right: 1px solid rgba(255,255,255,.12); position: relative; }
.stat-item:last-child { border-right: none; }
.stat-num { font-size: 30px; font-weight: 800; color: #fff; line-height: 1.2; }
.stat-num .unit { font-size: 15px; color: var(--red); margin-left: 2px; }
.stat-item::after { content: ""; display: block; width: 28px; height: 2px; background: var(--red); margin: 12px auto 0; }
.stat-label { font-size: 13px; color: rgba(255,255,255,.55); margin-top: 8px; }

/* 应用场景 */
.scenario-section { padding: 96px 0; }
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.scenario-card { border: 1px solid var(--gray-line); border-radius: var(--radius); padding: 32px 28px; position: relative; transition: var(--transition); background: #fff; overflow: hidden; }
.scenario-card:hover { border-color: var(--ink-soft); transform: translateY(-3px); box-shadow: 3px 3px 0 rgba(20,22,24,.05); }
.sc-index { position: absolute; top: 20px; right: 24px; font-size: 42px; font-weight: 800; color: var(--gray-bg); line-height: 1; font-family: var(--mono); }
.sc-num { font-family: var(--mono); font-size: 12px; color: var(--gray-mid); letter-spacing: 1.2px; text-transform: uppercase; }
.scenario-card h3 { font-size: 18px; font-weight: 700; margin: 12px 0 8px; }
.scenario-card p { font-size: 14px; color: var(--gray-text); line-height: 1.8; }

/* FAQ */
.faq-section { padding: 96px 0; background: var(--gray-bg); border-top: 1px solid var(--gray-line); }
.faq-wrap { max-width: 840px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--gray-line); background: #fff; }
.faq-item:first-child { border-top: 1px solid var(--gray-line); }
.faq-item summary { display: flex; justify-content: space-between; align-items: center; list-style: none; cursor: pointer; padding: 22px 24px; font-size: 16px; font-weight: 700; color: var(--ink); transition: var(--transition); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--red); }
.faq-item summary::after { content: "+"; font-size: 22px; font-weight: 400; color: var(--gray-mid); transition: var(--transition); }
.faq-item[open] summary::after { content: "−"; color: var(--red); }
.faq-item .faq-a { padding: 0 24px 24px; font-size: 14px; color: var(--gray-text); line-height: 1.85; }

/* CTA */
.cta-band { background: var(--ink-deep); padding: 72px 0; position: relative; overflow: hidden; }
.cta-band::before { content: ""; position: absolute; right: 0; top: 0; width: 50%; height: 100%; background: url('/assets/images/backpic/back-2.webp') center / cover no-repeat; opacity: .16; }
.cta-inner { position: relative; z-index: 1; text-align: center; }
.cta-inner h2 { color: #fff; font-size: 30px; font-weight: 800; margin-bottom: 14px; }
.cta-inner p { color: rgba(255,255,255,.6); font-size: 15px; margin-bottom: 32px; max-width: 620px; margin-left: auto; margin-right: auto; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* 页脚 */
.site-footer { background: #fff; border-top: 1px solid var(--gray-line); padding-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 48px; }
.footer-brand p { font-size: 14px; color: var(--gray-text); line-height: 1.8; margin-top: 16px; max-width: 340px; }
.footer-col h3 { font-size: 14px; font-weight: 700; color: var(--ink); margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { font-size: 13.5px; color: var(--gray-text); }
.footer-col ul a:hover { color: var(--red); }
.footer-red-line { border: none; height: 1px; background: var(--red); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding: 24px 0 32px; font-size: 12.5px; color: var(--gray-mid); flex-wrap: wrap; gap: 8px; }
.footer-bottom a:hover { color: var(--red); }

/* 移动端导航 */
.mobile-toggle { display: none; align-items: center; justify-content: center; width: 40px; height: 40px; border: 1px solid var(--gray-border); border-radius: var(--radius); margin-left: auto; }
.mobile-toggle svg { stroke: var(--ink); }
.nav-overlay { position: fixed; inset: 0; background: rgba(20,22,24,.5); z-index: 290; opacity: 0; pointer-events: none; transition: opacity .3s ease; }
.nav-overlay.show { opacity: 1; pointer-events: auto; }

/* 响应式 */
@media (max-width: 1023px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); row-gap: 28px; }
  .stat-item { border-right: none; }
  .stat-item:nth-child(odd)::before { display: none; }
  .stat-item { padding: 8px 16px; }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .nav-wrap { gap: 24px; }
}

@media (max-width: 767px) {
  .nav-links {
    position: fixed; top: 0; left: 0; bottom: 0; width: 272px; background: #fff;
    flex-direction: column; align-items: flex-start; padding: 88px 32px 32px; gap: 4px;
    box-shadow: 8px 0 24px rgba(20,22,24,.16); z-index: 300; transform: translateX(-100%);
    transition: transform .3s ease;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-link { display: block; padding: 15px 0; font-size: 17px; width: 100%; border-bottom: 1px solid var(--gray-line); }
  .mobile-toggle { display: inline-flex; }
  .nav-actions .btn-primary { padding: 12px 18px; font-size: 13px; }
  .page-banner { padding: 56px 0 48px; }
  .page-banner h1 { font-size: 28px; }
  .prod-section, .feature-section, .scenario-section, .faq-section { padding: 48px 0; }
  .sec-title { font-size: 23px; }
  .sec-label { font-size: 11px; }
  .product-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .scenario-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 18px 0; }
  .stat-num { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-brand { grid-column: 1 / -1; }
  .cta-inner h2 { font-size: 24px; }
  .topbar-inner span:first-child { display: none; }
  .topbar-inner { justify-content: center; }
  .faq-item summary { font-size: 15px; padding: 18px 16px; }
  .faq-item .faq-a { padding: 0 16px 18px; }
}

@media (max-width: 520px) {
  .product-grid { gap: 20px; }
  .filter-bar { gap: 8px; }
  .filter-item { padding: 8px 14px; font-size: 13px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .nav-actions { gap: 10px; }
}

/* roulang page: category2 */
:root {
            --color-black: #1B1E21;
            --color-dark: #141618;
            --color-gray-bg: #F3F4F6;
            --color-gray-border: #E5E7EB;
            --color-gray-mid: #9CA3AF;
            --color-red: #E63946;
            --color-red-dark: #C62F3A;
            --color-border: #D8DBDF;
            --color-text: #1B1E21;
            --color-text-light: #4B5563;
            --color-text-gray: #6B7280;
            --radius: 4px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
            --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-mono: ui-monospace, SFMono-Regular, Menlo, monospace;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: #fff;
            color: var(--color-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        input,
        textarea {
            font-family: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--color-red);
            outline-offset: 2px;
        }

        /* ===== Top Bar ===== */
        .top-bar {
            background: var(--color-dark);
            color: rgba(255, 255, 255, 0.72);
            font-size: 12px;
            height: 36px;
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            letter-spacing: 0.02em;
        }
        .top-bar-inner {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .top-bar-notice {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .top-bar-notice::before {
            content: '';
            width: 6px;
            height: 6px;
            background: var(--color-red);
            display: inline-block;
            border-radius: 50%;
            flex-shrink: 0;
        }

        /* ===== Header ===== */
        .site-header {
            background: #fff;
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid var(--color-gray-border);
        }
        .header-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .site-logo {
            display: flex;
            flex-direction: column;
            line-height: 1.25;
            flex-shrink: 0;
        }
        .logo-main {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.01em;
            color: var(--color-black);
        }
        .logo-main span {
            color: var(--color-red);
            font-weight: 900;
        }
        .logo-sub {
            font-size: 9px;
            letter-spacing: 0.18em;
            color: var(--color-gray-mid);
            text-transform: uppercase;
            font-family: var(--font-mono);
            margin-top: 2px;
        }
        .nav-links {
            display: flex;
            gap: 36px;
            align-items: center;
        }
        .nav-link {
            font-size: 14px;
            color: var(--color-text);
            position: relative;
            padding: 10px 0;
            font-weight: 500;
            transition: color 0.2s ease, transform 0.2s ease;
        }
        .nav-link:hover {
            color: var(--color-red);
            transform: translateY(-1px);
        }
        .nav-link::after {
            content: '';
            display: block;
            width: 0;
            height: 2px;
            background: var(--color-red);
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            transition: width 0.3s ease;
        }
        .nav-link:hover::after {
            width: 20px;
        }
        .nav-link.active {
            color: var(--color-black);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            display: block;
            width: 24px;
            height: 4px;
            border-radius: 2px;
            background: var(--color-red);
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-btn {
            background: none;
            border: none;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text);
            border-radius: var(--radius);
            transition: color 0.2s ease, background 0.2s ease;
        }
        .search-btn:hover {
            color: var(--color-red);
            background: var(--color-gray-bg);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 700;
            padding: 14px 28px;
            border-radius: var(--radius);
            border: none;
            line-height: 1;
            transition: all 0.2s ease;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--color-red);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--color-red-dark);
            transform: translate(-2px, -2px);
            box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.08);
        }
        .btn-primary:active {
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.25);
            transform: translate(0, 0);
        }
        .btn-sm {
            padding: 10px 22px;
            font-size: 13px;
        }
        .btn-outline {
            background: #fff;
            border: 1px solid var(--color-border);
            color: var(--color-text);
        }
        .btn-outline:hover {
            border-color: var(--color-black);
            transform: translate(-2px, -2px);
            box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.05);
        }
        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: #fff;
        }
        .btn-outline-light:hover {
            border-color: #fff;
            transform: translate(-2px, -2px);
            background: rgba(255, 255, 255, 0.06);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            background: var(--color-dark);
            background-size: cover;
            background-position: center;
            padding: 72px 0 64px;
            position: relative;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(20, 22, 24, 0.94) 0%, rgba(20, 22, 24, 0.68) 55%, rgba(20, 22, 24, 0.32) 100%);
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .breadcrumb {
            display: flex;
            gap: 8px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 28px;
            align-items: center;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.5);
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--color-red);
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.3);
        }
        .breadcrumb .current {
            color: #fff;
            font-weight: 500;
        }
        .page-hero h1 {
            font-size: 40px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .hero-desc {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 680px;
            line-height: 1.75;
        }
        .hero-stats {
            display: flex;
            gap: 48px;
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }
        .hero-stat {
            min-width: 110px;
        }
        .hero-stat strong {
            display: block;
            font-size: 30px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            font-family: var(--font-mono);
            letter-spacing: -0.02em;
        }
        .hero-stat strong i {
            font-style: normal;
            color: var(--color-red);
        }
        .hero-stat span {
            display: block;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
            margin-top: 4px;
            letter-spacing: 0.04em;
        }

        /* ===== Section Header ===== */
        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--color-gray-border);
        }
        .section-header h2 {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 800;
            color: var(--color-black);
            line-height: 1.3;
        }
        .section-header h2 .red-dot {
            width: 8px;
            height: 8px;
            background: var(--color-red);
            display: inline-block;
            flex-shrink: 0;
            border-radius: 1px;
        }
        .section-header h2 .en-label {
            font-size: 11px;
            font-weight: 400;
            font-family: var(--font-mono);
            color: var(--color-gray-mid);
            letter-spacing: 0.12em;
            text-transform: uppercase;
            margin-top: 2px;
        }
        .more-link {
            font-size: 13px;
            color: var(--color-gray-mid);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color 0.2s ease;
        }
        .more-link:hover {
            color: var(--color-red);
        }
        .more-link .arrow-icon {
            transition: transform 0.2s ease;
        }
        .more-link:hover .arrow-icon {
            transform: translateX(4px);
        }

        /* ===== News Section ===== */
        .news-section {
            padding: 64px 0 8px;
        }

        /* Feature News */
        .feature-news {
            margin-bottom: 32px;
            border: 1px solid var(--color-gray-border);
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            transition: box-shadow 0.25s ease, border-color 0.25s ease;
        }
        .feature-news:hover {
            border-color: var(--color-black);
            box-shadow: var(--shadow-md);
        }
        .feature-news-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--color-gray-bg);
        }
        .feature-news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .feature-news:hover .feature-news-img img {
            transform: scale(1.03);
        }
        .feature-news .badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--color-dark);
            color: #fff;
            font-size: 12px;
            padding: 5px 14px;
            border-radius: 2px;
            font-weight: 600;
            letter-spacing: 0.03em;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .feature-news .badge::before {
            content: '';
            width: 6px;
            height: 6px;
            background: var(--color-red);
            border-radius: 50%;
            display: inline-block;
        }
        .feature-content {
            padding: 22px 28px 24px;
        }
        .feature-content h3 {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 10px;
            line-height: 1.45;
            color: var(--color-black);
            transition: color 0.2s;
        }
        .feature-content h3 a:hover {
            color: var(--color-red);
        }
        .feature-content p {
            font-size: 14px;
            color: var(--color-text-gray);
            line-height: 1.7;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .feature-meta {
            font-size: 12px;
            color: var(--color-gray-mid);
            display: flex;
            gap: 16px;
            align-items: center;
            flex-wrap: wrap;
        }
        .feature-meta .cat {
            color: var(--color-red);
            font-weight: 600;
            background: rgba(230, 57, 70, 0.06);
            padding: 2px 10px;
            border-radius: 2px;
        }

        /* News List */
        .news-list {
            border-top: 1px solid var(--color-gray-border);
        }
        .news-list-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 16px 4px;
            border-bottom: 1px solid var(--color-gray-border);
            transition: background 0.2s ease, padding 0.2s ease;
            border-radius: var(--radius);
        }
        .news-list-item:hover {
            background: var(--color-gray-bg);
            padding-left: 12px;
            padding-right: 12px;
        }
        .news-list-date {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-width: 50px;
            height: 50px;
            background: #fff;
            border: 1px solid var(--color-gray-border);
            border-radius: var(--radius);
            font-family: var(--font-mono);
            flex-shrink: 0;
        }
        .news-list-date strong {
            font-size: 16px;
            font-weight: 800;
            color: var(--color-black);
            line-height: 1;
            letter-spacing: -0.02em;
        }
        .news-list-date span {
            font-size: 10px;
            color: var(--color-gray-mid);
            margin-top: 3px;
            letter-spacing: 0.06em;
        }
        .news-list-info {
            flex: 1;
            overflow: hidden;
            min-width: 0;
        }
        .news-list-info h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 3px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            color: var(--color-black);
            transition: color 0.2s ease;
            line-height: 1.4;
        }
        .news-list-item:hover .news-list-info h4 {
            color: var(--color-red);
        }
        .news-list-info p {
            font-size: 13px;
            color: var(--color-gray-mid);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            line-height: 1.5;
        }
        .news-list-cat {
            font-size: 12px;
            color: var(--color-text-gray);
            background: var(--color-gray-bg);
            padding: 4px 12px;
            border-radius: 3px;
            white-space: nowrap;
            flex-shrink: 0;
            transition: background 0.2s ease, color 0.2s ease;
        }
        .news-list-item:hover .news-list-cat {
            background: rgba(230, 57, 70, 0.08);
            color: var(--color-red);
        }
        .news-list-arrow {
            color: var(--color-gray-mid);
            font-size: 18px;
            flex-shrink: 0;
            transition: transform 0.2s ease, color 0.2s ease;
            width: 24px;
            text-align: center;
        }
        .news-list-item:hover .news-list-arrow {
            color: var(--color-red);
            transform: translateX(5px);
        }

        /* Sidebar */
        .sidebar-widget {
            border: 1px solid var(--color-gray-border);
            border-radius: var(--radius);
            padding: 24px;
            margin-bottom: 24px;
            background: #fff;
            transition: border-color 0.25s ease;
        }
        .sidebar-widget:hover {
            border-color: var(--color-black);
        }
        .sidebar-widget h3 {
            font-size: 16px;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--color-gray-border);
            color: var(--color-black);
        }
        .sidebar-widget h3 .red-dot {
            width: 8px;
            height: 8px;
            background: var(--color-red);
            display: inline-block;
            flex-shrink: 0;
            border-radius: 1px;
        }
        .sale-banner {
            background: var(--color-dark);
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            color: #fff;
        }
        .sale-banner h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .sale-banner p {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.6;
            margin-bottom: 20px;
        }

        /* Tag Cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud a {
            font-size: 13px;
            color: var(--color-text-light);
            border: 1px solid var(--color-gray-border);
            padding: 6px 14px;
            border-radius: 4px;
            transition: all 0.2s ease;
            background: #fff;
        }
        .tag-cloud a:hover {
            border-color: var(--color-red);
            color: var(--color-red);
            background: rgba(230, 57, 70, 0.03);
            transform: translateY(-1px);
        }

        /* Recommend List */
        .recommend-list li {
            border-bottom: 1px solid var(--color-gray-bg);
        }
        .recommend-list li:last-child {
            border-bottom: none;
        }
        .recommend-list a {
            display: block;
            padding: 11px 0;
            font-size: 14px;
            line-height: 1.5;
            color: var(--color-text);
            transition: color 0.2s ease;
        }
        .recommend-list a:hover {
            color: var(--color-red);
        }
        .recommend-list a .time {
            display: block;
            font-size: 12px;
            color: var(--color-gray-mid);
            margin-top: 2px;
            font-family: var(--font-mono);
        }

        /* Pagination */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            padding: 36px 0 56px;
        }
        .pagination a,
        .pagination span {
            min-width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius);
            font-size: 14px;
            border: 1px solid var(--color-gray-border);
            color: var(--color-text-light);
            transition: all 0.2s ease;
            padding: 0 10px;
            background: #fff;
            font-weight: 500;
        }
        .pagination a:hover {
            border-color: var(--color-red);
            color: var(--color-red);
        }
        .pagination .current {
            background: var(--color-black);
            color: #fff;
            border-color: var(--color-black);
            font-weight: 700;
        }
        .pagination .disabled {
            color: #D1D5DB;
            cursor: not-allowed;
            border-color: #ECEDEF;
            background: #FAFAFA;
        }

        /* ===== Trend Section ===== */
        .trend-section {
            padding: 64px 0;
            background: #F9FAFB;
            border-top: 1px solid var(--color-gray-border);
        }
        .trend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .trend-card {
            background: #fff;
            border: 1px solid var(--color-gray-border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all 0.25s ease;
        }
        .trend-card:hover {
            border-color: var(--color-black);
            transform: translate(-2px, -2px);
            box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.04);
        }
        .trend-card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--color-gray-bg);
            position: relative;
        }
        .trend-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .trend-card:hover .trend-card-img img {
            transform: scale(1.03);
        }
        .trend-card-img .badge-small {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(20, 22, 24, 0.92);
            color: #fff;
            font-size: 11px;
            padding: 4px 12px;
            border-radius: 2px;
            font-weight: 600;
            letter-spacing: 0.04em;
        }
        .trend-card-content {
            padding: 24px;
        }
        .trend-card-content .tag {
            display: inline-block;
            font-size: 12px;
            color: var(--color-red);
            background: rgba(230, 57, 70, 0.06);
            padding: 4px 12px;
            border-radius: 2px;
            margin-bottom: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .trend-card-content h3 {
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--color-black);
            line-height: 1.4;
        }
        .trend-card-content p {
            font-size: 14px;
            color: var(--color-text-gray);
            line-height: 1.65;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--color-dark);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            opacity: 0.14;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 30px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }
        .cta-section p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 30px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 24px;
            font-size: 13px;
            line-height: 1.8;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 36px;
        }
        .footer-brand .site-logo {
            margin-bottom: 0;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.5);
            margin-top: 16px;
            max-width: 360px;
            font-size: 13px;
            line-height: 1.75;
        }
        .footer-col h3 {
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
            position: relative;
            padding-left: 12px;
        }
        .footer-col h3::before {
            content: '';
            position: absolute;
            left: 0;
            top: 3px;
            width: 4px;
            height: 14px;
            background: var(--color-red);
            border-radius: 1px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col a {
            color: rgba(255, 255, 255, 0.5);
            transition: color 0.2s ease, padding-left 0.2s ease;
        }
        .footer-col a:hover {
            color: var(--color-red);
            padding-left: 4px;
        }
        .footer-red-line {
            border: none;
            border-top: 1px solid var(--color-red);
            opacity: 0.7;
            margin-bottom: 16px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: rgba(255, 255, 255, 0.4);
            font-size: 12px;
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
            transition: color 0.2s ease;
        }
        .footer-bottom a:hover {
            color: var(--color-red);
        }

        /* ===== Mobile Menu ===== */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            width: 36px;
            height: 36px;
            align-items: center;
            justify-content: center;
            color: var(--color-text);
            border-radius: var(--radius);
            transition: background 0.2s ease;
        }
        .menu-toggle:hover {
            background: var(--color-gray-bg);
        }
        .menu-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 150;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .menu-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .page-hero h1 {
                font-size: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .trend-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .hero-stats {
                gap: 32px;
            }
            .hero-stat strong {
                font-size: 24px;
            }
        }
        @media (max-width: 767px) {
            .top-bar {
                display: none;
            }
            .header-main {
                height: 60px;
            }
            .nav-links {
                position: fixed;
                top: 0;
                left: -100%;
                height: 100vh;
                width: 280px;
                background: #fff;
                z-index: 200;
                flex-direction: column;
                align-items: flex-start;
                padding: 84px 32px 32px;
                gap: 28px;
                box-shadow: 8px 0 24px rgba(0, 0, 0, 0.12);
                transition: left 0.35s ease;
                display: flex;
            }
            .nav-links.open {
                left: 0;
            }
            .nav-link {
                font-size: 16px;
                width: 100%;
                padding: 8px 0;
                border-bottom: 1px solid var(--color-gray-bg);
            }
            .nav-link::after,
            .nav-link.active::after {
                display: none;
            }
            .nav-link.active {
                color: var(--color-red);
            }
            .menu-toggle {
                display: flex;
            }
            .menu-overlay {
                display: block;
            }
            .search-btn {
                display: none;
            }
            .header-actions .btn {
                padding: 8px 16px;
                font-size: 12px;
            }
            .page-hero {
                padding: 48px 0 40px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .hero-desc {
                font-size: 13px;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
                margin-top: 24px;
                padding-top: 20px;
            }
            .hero-stat strong {
                font-size: 22px;
            }
            .news-section {
                padding: 40px 0 0;
            }
            .section-header h2 {
                font-size: 18px;
            }
            .feature-news {
                margin-bottom: 24px;
            }
            .feature-content {
                padding: 16px 16px 20px;
            }
            .feature-content h3 {
                font-size: 18px;
            }
            .news-list-item {
                gap: 12px;
                padding-left: 0;
                padding-right: 0;
            }
            .news-list-info p {
                display: none;
            }
            .news-list-cat {
                display: none;
            }
            .news-list-date {
                min-width: 44px;
                height: 44px;
            }
            .trend-section {
                padding: 40px 0;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .pagination {
                padding: 24px 0 40px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-actions .btn {
                display: none;
            }
            .logo-main {
                font-size: 18px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .hero-desc {
                font-size: 12px;
            }
            .feature-meta {
                flex-wrap: wrap;
                gap: 8px;
            }
            .btn {
                padding: 12px 20px;
                font-size: 13px;
            }
        }