/* roulang page: index */
:root{
  --c-bg:#0B1420;
  --c-bg-2:#111E2E;
  --c-primary:#FF4528;
  --c-accent:#FF7A18;
  --c-gold:#FFB800;
  --c-cyan:#4DD6FF;
  --c-text:#E6EDF3;
  --c-dim:#8FA3B8;
  --c-border:rgba(255,255,255,0.12);
  --c-glass:rgba(255,255,255,0.06);
  --r-btn:12px;
  --r-card:20px;
  --r-img:16px;
  --shadow:0 16px 48px rgba(0,0,0,0.35);
  --shadow-btn:0 8px 24px rgba(255,69,40,0.3);
  --space:80px;
  --font-sans:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:Inter,"DIN Alternate","Bahnschrift",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:var(--font-sans);
  background:var(--c-bg);
  color:var(--c-text);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .3s ease}
button,input{font-family:inherit}
.container{max-width:1240px;padding-inline:24px}
section{padding-block:var(--space)}
.h1,.h2,.h3,h1,h2,h3,h4,h5{font-family:var(--font-sans);color:var(--c-text);line-height:1.3}
h1{font-size:clamp(2.2rem,4.2vw,3.2rem);font-weight:800;line-height:1.2}
h2{font-size:clamp(1.6rem,2.8vw,2.2rem);font-weight:700;line-height:1.3}
h3{font-size:clamp(1.15rem,1.6vw,1.35rem);font-weight:600}
p{color:var(--c-text)}
.text-dim{color:var(--c-dim)}
::selection{background:rgba(255,69,40,0.5);color:#fff}
:focus-visible{outline:2px solid var(--c-cyan);outline-offset:2px}

/* Buttons */
.btn{border-radius:var(--r-btn);padding:14px 32px;font-weight:600;font-size:1rem;min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;transition:all .3s cubic-bezier(.4,0,.2,1)}
.btn-primary{background:linear-gradient(120deg,#FF4528 0%,#FF7A18 100%);color:#fff;box-shadow:var(--shadow-btn)}
.btn-primary:hover{filter:brightness(1.1);transform:translateY(-2px);box-shadow:0 12px 32px rgba(255,80,40,0.45);color:#fff}
.btn-primary:active{transform:translateY(0);filter:brightness(0.95)}
.btn-outline{background:rgba(255,255,255,0.08);border:1px solid rgba(255,255,255,0.25);color:var(--c-text)}
.btn-outline:hover{background:rgba(255,255,255,0.16);border-color:rgba(255,255,255,0.5);color:#fff}

/* Badges & Tags */
.badge-cat{display:inline-block;padding:4px 12px;border-radius:999px;background:rgba(255,184,0,0.12);color:var(--c-gold);border:1px solid rgba(255,184,0,0.25);font-size:0.75rem;font-weight:500;letter-spacing:0.02em}
.badge-cyan{background:rgba(77,214,255,0.12);color:var(--c-cyan);border:1px solid rgba(77,214,255,0.25)}
.badge-red{background:rgba(255,69,40,0.12);color:var(--c-primary);border:1px solid rgba(255,69,40,0.25)}

/* Glass card */
.glass-panel{background:rgba(17,30,46,0.55);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,0.08);border-radius:var(--r-card);transition:all .3s cubic-bezier(.4,0,.2,1)}
.glass-panel:hover{border-color:rgba(255,255,255,0.18);transform:translateY(-6px);box-shadow:var(--shadow),0 0 0 1px rgba(77,214,255,0.08)}

/* Section headers */
.section-head{margin-bottom:48px}
.sec-tag{display:inline-flex;align-items:center;gap:8px;font-size:0.8125rem;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;color:var(--c-cyan);margin-bottom:14px}
.sec-tag::before{content:"";width:4px;height:16px;border-radius:2px;background:linear-gradient(180deg,var(--c-cyan),transparent)}
.section-head h2{position:relative;padding-left:18px}
.section-head h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:24px;border-radius:2px;background:linear-gradient(180deg,var(--c-primary),var(--c-accent));box-shadow:0 0 12px rgba(255,69,40,0.6)}
.section-sub{color:var(--c-dim);max-width:640px;margin-top:12px;font-size:1rem}

/* Header */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(11,20,32,0.75);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,0.06);min-height:72px;display:flex;align-items:center}
.header-inner{display:flex;align-items:center;justify-content:space-between;width:100%}
.brand-logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo-mark{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,#FF4528,#FF7A18);display:flex;align-items:center;justify-content:center;font-size:1.15rem;font-weight:800;color:#fff;box-shadow:0 0 16px rgba(255,69,40,0.4);position:relative}
.logo-mark::after{content:"";position:absolute;inset:-3px;border-radius:50%;border:1px solid rgba(255,122,24,0.4);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:.6;transform:scale(1)}50%{opacity:1;transform:scale(1.1)}}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text strong{font-size:1.25rem;font-weight:800;letter-spacing:0.01em;background:linear-gradient(120deg,#fff,#d6e0ea);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.logo-text small{font-size:0.7rem;color:var(--c-dim);letter-spacing:0.12em}
.header-nav{display:flex;align-items:center;gap:28px}
.header-nav a{font-size:0.9375rem;font-weight:500;color:var(--c-dim);position:relative;padding:8px 2px}
.header-nav a:hover{color:#fff}
.header-nav a.active{color:#fff}
.header-nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent));box-shadow:0 0 8px rgba(255,69,40,0.5)}
.header-nav .btn{padding:10px 22px;font-size:0.875rem;min-height:0}
.nav-cta{margin-left:8px}
.mobile-toggler{display:none;background:none;border:1px solid rgba(255,255,255,0.15);border-radius:10px;padding:8px 10px;cursor:pointer}
.mobile-toggler span{display:block;width:20px;height:2px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent));margin:3px 0;border-radius:2px}
.mobile-menu{display:none;position:fixed;top:60px;left:0;right:0;background:#0B1420;border-bottom:1px solid rgba(255,255,255,0.08);padding:16px 24px 24px;z-index:999;flex-direction:column;gap:8px}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:12px 16px;border-radius:12px;color:var(--c-dim);font-size:1rem;font-weight:500}
.mobile-menu a:hover{background:rgba(255,255,255,0.06);color:#fff}
.mobile-menu a.active{background:rgba(255,69,40,0.12);color:var(--c-primary)}
.mobile-menu .btn{margin-top:8px}

/* Hero */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;padding:80px 0 60px;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(11,20,32,0.92) 25%,rgba(11,20,32,0.78) 60%,rgba(17,30,46,0.6) 100%)}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 30% 50%,rgba(255,69,40,0.15),transparent 60%)}
.hero-inner{position:relative;z-index:2;display:flex;align-items:center;gap:64px}
.hero-copy{flex:1.2}
.hero-copy h1{margin-bottom:20px}
.hero-copy h1 .highlight{background:linear-gradient(120deg,#FF4528,#FF7A18);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-sub{color:var(--c-dim);font-size:1.125rem;line-height:1.8;max-width:560px;margin-bottom:28px}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);font-size:0.8125rem;color:var(--c-text)}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-cyan);box-shadow:0 0 6px rgba(77,214,255,0.6)}
.hero-badge.hot::before{background:var(--c-gold);box-shadow:0 0 6px rgba(255,184,0,0.6)}
.hero-badge.red::before{background:var(--c-primary);box-shadow:0 0 6px rgba(255,69,40,0.6)}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:36px}
.hero-trust{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.trust-item{display:flex;align-items:center;gap:8px;color:var(--c-dim);font-size:0.8125rem}
.trust-avatar{width:24px;height:24px;border-radius:50%;border:2px solid rgba(255,255,255,0.2)}
.hero-panel{flex:0 0 380px}
.hero-panel .panel-header{display:flex;align-items:center;gap:8px;padding:16px 20px;border-bottom:1px solid rgba(255,255,255,0.08);font-weight:600;font-size:0.9375rem}
.live-dot{width:8px;height:8px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 8px rgba(255,69,40,0.6);animation:blink 1.2s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.4}}
.panel-list{padding:8px 0}
.panel-item{padding:14px 20px;border-bottom:1px solid rgba(255,255,255,0.05);transition:background .3s}
.panel-item:last-child{border-bottom:none}
.panel-item:hover{background:rgba(255,255,255,0.04)}
.panel-meta{display:flex;align-items:center;gap:8px;margin-bottom:4px}
.sport-tag{font-size:0.6875rem;padding:2px 8px;border-radius:4px;background:rgba(77,214,255,0.15);color:var(--c-cyan)}
.panel-time{font-size:0.75rem;color:var(--c-dim);font-family:var(--font-num)}
.panel-title{font-size:0.9375rem;font-weight:600;color:var(--c-text)}
.panel-more{padding:12px 20px;border-top:1px solid rgba(255,255,255,0.06);font-size:0.8125rem;color:var(--c-dim);display:flex;align-items:center;justify-content:space-between}
.panel-more:hover{color:var(--c-cyan)}

/* Pain points */
.pain-section{background:var(--c-bg-2);position:relative}
.pain-section::before{content:"";position:absolute;top:-80px;right:0;width:400px;height:400px;background:radial-gradient(circle,rgba(255,69,40,0.08),transparent 70%)}
.pain-grid{margin-top:40px}
.pain-card{padding:28px;height:100%;position:relative;transition:all .3s cubic-bezier(.4,0,.2,1)}
.pain-card:hover{border-color:rgba(255,255,255,0.2);transform:translateY(-6px);box-shadow:var(--shadow)}
.pain-icon{width:48px;height:48px;border-radius:12px;background:rgba(255,69,40,0.12);border:1px solid rgba(255,69,40,0.2);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.pain-icon svg{width:24px;height:24px;stroke:var(--c-primary);stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.pain-card h3{font-size:1.0625rem;margin-bottom:8px}
.pain-card p{color:var(--c-dim);font-size:0.875rem;line-height:1.65}
.pain-arrow{position:absolute;bottom:20px;right:20px;width:28px;height:28px;border-radius:50%;background:rgba(255,255,255,0.08);display:flex;align-items:center;justify-content:center;transition:all .3s;opacity:.6}
.pain-card:hover .pain-arrow{background:linear-gradient(135deg,#FF4528,#FF7A18);opacity:1;box-shadow:0 0 12px rgba(255,69,40,0.4)}
.pain-arrow svg{width:14px;height:14px;stroke:#fff;stroke-width:2;fill:none}

/* Solution */
.solution-section{background:var(--c-bg)}
.solution-steps{display:flex;align-items:center;gap:0;margin:48px 0 40px}
.step-item{flex:1;text-align:center;position:relative}
.step-dot{width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);display:flex;align-items:center;justify-content:center;font-family:var(--font-num);font-weight:700;font-size:1rem;color:var(--c-dim);margin:0 auto 12px;transition:all .3s}
.step-dot span{font-size:1.125rem;font-weight:800;background:linear-gradient(120deg,#FF4528,#FF7A18);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.step-item.active .step-dot,.step-item:hover .step-dot{background:rgba(255,69,40,0.12);border-color:rgba(255,69,40,0.3)}
.step-label{font-size:0.875rem;font-weight:600;color:var(--c-text)}
.step-desc{font-size:0.75rem;color:var(--c-dim);margin-top:4px;padding-inline:8px}
.step-line{position:absolute;top:24px;left:calc(50% + 30px);right:calc(-50% + 30px);height:2px;background:repeating-linear-gradient(90deg,rgba(255,255,255,0.14) 0 4px,transparent 4px 8px)}
.step-item:last-child .step-line{display:none}
.solution-grid{margin-top:32px}
.solution-main{display:flex;align-items:center;gap:32px;padding:36px;height:100%}
.solution-main-body{flex:1}
.solution-main-body h3{font-size:1.4rem;margin-bottom:12px}
.solution-main-body p{color:var(--c-dim);margin-bottom:20px;font-size:0.9375rem}
.solution-link{display:inline-flex;align-items:center;gap:8px;color:var(--c-cyan);font-weight:600;font-size:0.875rem}
.solution-link svg{width:18px;height:18px;stroke:var(--c-cyan);stroke-width:2;fill:none;transition:transform .3s}
.solution-link:hover svg{transform:translateX(4px)}
.solution-main-img{flex:0 0 180px;border-radius:16px;overflow:hidden;position:relative}
.solution-main-img img{width:100%;height:100%;object-fit:cover;min-height:180px;transition:transform .4s}
.solution-main:hover .solution-main-img img{transform:scale(1.05)}
.solution-sub{display:flex;flex-direction:column;gap:20px;height:100%}
.solution-sub-card{flex:1;padding:28px;display:flex;flex-direction:column;justify-content:center;background:linear-gradient(135deg,rgba(17,30,46,0.85),rgba(17,30,46,0.5))}
.solution-sub-card .sub-icon{width:40px;height:40px;border-radius:10px;background:rgba(255,184,0,0.12);border:1px solid rgba(255,184,0,0.2);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.solution-sub-card .sub-icon svg{width:20px;height:20px;stroke:var(--c-gold);stroke-width:2;fill:none}
.solution-sub-card h4{font-size:1rem;margin-bottom:8px}
.solution-sub-card p{font-size:0.8125rem;color:var(--c-dim);line-height:1.6}

/* Stats */
.stats-section{position:relative;background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;padding:80px 0}
.stats-section::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,20,32,0.92),rgba(17,30,46,0.88))}
.stats-inner{position:relative;z-index:2}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{padding:36px 24px;text-align:center}
.stat-num{font-family:var(--font-num);font-size:clamp(2rem,3.5vw,3rem);font-weight:800;line-height:1.2;background:linear-gradient(120deg,#fff,#4DD6FF);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat-unit{font-size:1rem;color:var(--c-cyan);margin-left:2px}
.stat-label{color:var(--c-dim);font-size:0.875rem;margin-top:8px}
.stats-divider{height:1px;background:linear-gradient(90deg,transparent,rgba(255,69,40,0.6),transparent);margin-top:40px;position:relative}
.stats-divider::after{content:"";position:absolute;left:50%;top:-2px;width:6px;height:6px;border-radius:50%;background:var(--c-primary);transform:translateX(-50%);box-shadow:0 0 12px rgba(255,69,40,0.6)}

/* Testimonials */
.testimonial-section{background:var(--c-bg-2)}
.testimonial-grid{margin-top:40px}
.testimonial-card{padding:32px;height:100%;position:relative;display:flex;flex-direction:column}
.testimonial-card.featured{background:linear-gradient(135deg,rgba(17,30,46,0.9),rgba(255,69,40,0.05))}
.testimonial-quote{font-size:3rem;line-height:1;color:rgba(255,69,40,0.4);font-family:Georgia,serif;margin-bottom:8px}
.testimonial-text{color:var(--c-text);font-size:0.9375rem;line-height:1.8;flex:1}
.testimonial-author{display:flex;align-items:center;gap:12px;margin-top:24px;padding-top:20px;border-top:1px solid rgba(255,255,255,0.06)}
.testimonial-avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,rgba(255,69,40,0.4),rgba(255,122,24,0.4));border:2px solid rgba(255,255,255,0.15)}
.testimonial-name{font-size:0.875rem;font-weight:600}
.testimonial-role{font-size:0.75rem;color:var(--c-dim)}
.testimonial-stars{display:flex;gap:2px;margin-top:4px}
.testimonial-stars svg{width:14px;height:14px;fill:var(--c-gold)}

/* News CMS Section */
.news-section{background:var(--c-bg)}
.section-head-row{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:48px}
.section-head-row .section-head{margin-bottom:0}
.view-all{display:inline-flex;align-items:center;gap:6px;color:var(--c-dim);font-size:0.875rem;font-weight:600;padding:10px 20px;border-radius:999px;border:1px solid rgba(255,255,255,0.12);transition:all .3s}
.view-all:hover{color:var(--c-cyan);border-color:rgba(77,214,255,0.3);background:rgba(77,214,255,0.06)}
.view-all svg{width:16px;height:16px;stroke:currentColor;stroke-width:2;fill:none}
.news-card-large{display:flex;flex-direction:column;height:100%;overflow:hidden;transition:all .3s cubic-bezier(.4,0,.2,1)}
.news-card-large:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(255,255,255,0.18)}
.news-card-img{position:relative;aspect-ratio:16/10;overflow:hidden}
.news-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.news-card-large:hover .news-card-img img{transform:scale(1.04)}
.news-card-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(11,20,32,0.4))}
.news-card-content{padding:24px;display:flex;flex-direction:column;flex:1}
.news-card-content h3{font-size:1.125rem;line-height:1.5;margin:12px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card-content p{color:var(--c-dim);font-size:0.875rem;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.news-meta{display:flex;align-items:center;justify-content:space-between;margin-top:16px;font-size:0.8125rem}
.meta-date{color:var(--c-dim);font-family:var(--font-num)}
.meta-more{color:var(--c-cyan);font-weight:600}
.news-list{display:flex;flex-direction:column;gap:16px;height:100%}
.news-row{display:flex;align-items:center;gap:16px;padding:16px;border-radius:var(--r-card);background:rgba(17,30,46,0.55);border:1px solid rgba(255,255,255,0.08);transition:all .3s cubic-bezier(.4,0,.2,1)}
.news-row:hover{border-color:rgba(255,255,255,0.18);transform:translateY(-3px);box-shadow:0 12px 32px rgba(0,0,0,0.3)}
.news-row-thumb{width:88px;height:72px;border-radius:12px;overflow:hidden;flex-shrink:0}
.news-row-thumb img{width:100%;height:100%;object-fit:cover}
.news-row-body{flex:1;min-width:0}
.news-row-body h4{font-size:0.9375rem;font-weight:600;line-height:1.5;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.news-row-body .news-meta{margin-top:0}
.news-empty{text-align:center;padding:60px 20px;border:1px dashed rgba(255,255,255,0.12);border-radius:var(--r-card);background:rgba(255,255,255,0.02)}
.news-empty .empty-icon{width:64px;height:64px;margin:0 auto 16px;border-radius:50%;background:rgba(255,255,255,0.04);display:flex;align-items:center;justify-content:center}
.news-empty .empty-icon svg{width:28px;height:28px;stroke:var(--c-dim);stroke-width:1.5;fill:none}
.news-empty p{color:var(--c-dim)}

/* FAQ */
.faq-section{background:var(--c-bg-2);position:relative}
.faq-container{max-width:860px;margin:0 auto}
.faq-item{background:rgba(17,30,46,0.55);border:1px solid rgba(255,255,255,0.08);border-radius:16px;margin-bottom:14px;overflow:hidden;transition:border-color .3s}
.faq-item.open{border-color:rgba(255,69,40,0.25)}
.faq-question{width:100%;background:none;border:none;text-align:left;padding:18px 20px;font-size:0.9375rem;font-weight:600;color:var(--c-text);cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;transition:background .3s}
.faq-question:hover{background:rgba(255,255,255,0.04)}
.faq-question::after{content:"+";font-size:1.25rem;color:var(--c-dim);transition:transform .3s,color .3s;flex-shrink:0}
.faq-item.open .faq-question::after{transform:rotate(45deg);color:var(--c-primary)}
.faq-item.open .faq-question{border-left:3px solid var(--c-primary)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s cubic-bezier(.4,0,.2,1)}
.faq-answer-inner{padding:0 20px 18px;color:var(--c-dim);font-size:0.875rem;line-height:1.75}
.faq-item.open .faq-answer{max-height:200px}

/* CTA */
.cta-section{position:relative;padding:100px 0;background:radial-gradient(ellipse at 50% 100%,rgba(255,69,40,0.12),transparent 70%),var(--c-bg)}
.cta-panel{max-width:760px;margin:0 auto;text-align:center;padding:60px 40px;border-radius:32px;background:linear-gradient(135deg,rgba(17,30,46,0.85),rgba(255,69,40,0.08));border:1px solid rgba(255,255,255,0.1)}
.cta-panel h2{margin-bottom:16px;font-size:clamp(1.6rem,3vw,2.2rem)}
.cta-panel p{color:var(--c-dim);margin-bottom:32px;font-size:1.0625rem}
.cta-buttons{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin-bottom:36px}
.cta-form{display:flex;gap:12px;max-width:460px;margin:0 auto;flex-wrap:wrap}
.cta-form input{flex:1;min-width:220px;background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.15);border-radius:var(--r-btn);padding:14px 18px;color:var(--c-text);font-size:0.9375rem;transition:all .3s}
.cta-form input::placeholder{color:var(--c-dim)}
.cta-form input:focus{border-color:var(--c-cyan);box-shadow:0 0 0 4px rgba(77,214,255,0.12);outline:none}
.cta-note{font-size:0.75rem;color:var(--c-dim);margin-top:12px}

/* Footer */
.site-footer{background:#0B1420;border-top:1px solid rgba(255,255,255,0.06);padding:60px 0 0;position:relative}
.site-footer::before{content:"";position:absolute;top:-1px;left:10%;right:10%;height:1px;background:linear-gradient(90deg,transparent,rgba(255,69,40,0.4),transparent)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:40px}
.footer-brand .brand-logo{margin-bottom:16px}
.footer-brand p{color:var(--c-dim);font-size:0.875rem;line-height:1.7;max-width:320px}
.footer-col h4{font-size:0.875rem;font-weight:600;color:var(--c-text);margin-bottom:20px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:24px;height:2px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent));border-radius:2px}
.footer-col ul{list-style:none;padding:0}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:var(--c-dim);font-size:0.875rem;transition:all .3s}
.footer-col ul a:hover{color:var(--c-cyan);padding-left:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.06);padding:20px 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:0.8125rem;color:var(--c-dim)}
.footer-bottom .copyright{font-size:0.8125rem}
.footer-links{display:flex;gap:20px}
.footer-links a{color:var(--c-dim);font-size:0.8125rem}
.footer-links a:hover{color:var(--c-cyan)}

/* Responsive */
@media (max-width:1199.98px){
  .hero-panel{flex:0 0 340px}
  .solution-main-img{flex:0 0 140px}
}
@media (max-width:991.98px){
  .header-nav{display:none}
  .mobile-toggler{display:block}
  .hero{min-height:auto;padding:60px 0}
  .hero-inner{flex-direction:column;gap:40px}
  .hero-copy{text-align:center}
  .hero-sub{margin-inline:auto}
  .hero-badges,.hero-cta{justify-content:center}
  .hero-trust{justify-content:center}
  .hero-panel{flex:0 0 100%;max-width:420px;margin:0 auto}
  .pain-grid .col-md-6{flex:0 0 100%;max-width:100%}
  .solution-steps{flex-wrap:wrap;gap:20px}
  .step-item{flex:0 0 calc(50% - 20px)}
  .step-line{display:none}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:767.98px){
  :root{--space:48px}
  .container{padding-inline:16px}
  h1{font-size:2rem}
  .hero-badges .hero-badge{font-size:0.75rem;padding:6px 12px}
  .hero-cta .btn{width:100%}
  .cta-panel{padding:40px 20px}
  .cta-form input,.cta-form .btn{width:100%}
  .solution-grid .col-lg-4{margin-top:20px}
  .solution-main{flex-direction:column;padding:24px}
  .solution-main-img{flex:none;width:100%;aspect-ratio:16/9}
  .solution-main-img img{min-height:0}
  .news-list{margin-top:20px}
  .stats-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center;padding:20px 16px}
  .testimonial-grid .col-lg-6,.testimonial-grid .col-lg-3{flex:0 0 100%;max-width:100%}
  .testimonial-card{height:auto}
  .section-head-row{flex-direction:column;align-items:flex-start;gap:16px}
  .news-row-thumb{width:72px;height:60px}
}
@media (max-width:520px){
  .hero-badges{flex-direction:column;align-items:center}
  .stats-grid{grid-template-columns:1fr}
  .stat-item{padding:24px}
  .step-item{flex:0 0 100%;text-align:center}
  .cta-form{flex-direction:column}
  .footer-links{flex-direction:column;gap:8px}
}

/* roulang page: category1 */
:root {
      --c-bg: #0B1420;
      --c-bg-2: #111E2E;
      --c-primary: #FF4528;
      --c-accent: #FF7A18;
      --c-glow: #4DD6FF;
      --c-gold: #FFB800;
      --c-text: #E6EDF3;
      --c-muted: #8FA3B8;
      --c-border: rgba(255, 255, 255, 0.12);
      --glass-bg: rgba(255, 255, 255, 0.06);
      --glass-card: rgba(17, 30, 46, 0.55);
      --radius-md: 20px;
      --radius-sm: 12px;
      --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
      --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.35);
      --space-section: 80px;
      --font-main: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --font-num: "Inter", "DIN Alternate", "Bahnschrift", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      background: var(--c-bg);
      color: var(--c-text);
      font-family: var(--font-main);
      font-size: 16px;
      line-height: 1.75;
      letter-spacing: 0.01em;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .25s ease;
    }

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

    button {
      font-family: inherit;
    }

    .container {
      max-width: 1240px;
      padding-left: 20px;
      padding-right: 20px;
    }

    .visually-hidden {
      position: absolute;
      width: 1px;
      height: 1px;
      overflow: hidden;
      clip: rect(0, 0, 0, 0);
    }

    a:focus-visible,
    button:focus-visible {
      outline: 2px solid var(--c-glow);
      outline-offset: 2px;
      border-radius: 4px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(11, 20, 32, 0.75);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      min-height: 72px;
      display: flex;
      align-items: center;
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      min-height: 72px;
      position: relative;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      z-index: 5;
      white-space: nowrap;
    }

    .logo-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, rgba(255, 69, 40, 0.2), rgba(77, 214, 255, 0.15));
      border: 1px solid rgba(255, 255, 255, 0.18);
      color: #fff;
      font-weight: 800;
      font-size: 1.15rem;
      box-shadow: 0 0 20px rgba(255, 69, 40, 0.2);
    }

    .logo-text {
      display: flex;
      flex-direction: column;
      line-height: 1.1;
    }

    .logo-text strong {
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: 0.02em;
      background: linear-gradient(120deg, #FF4528, #FF7A18);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .logo-text small {
      font-size: 0.7rem;
      color: var(--c-muted);
      letter-spacing: 0.1em;
    }

    .header-nav {
      display: flex;
      align-items: center;
      gap: 28px;
      z-index: 4;
    }

    .header-nav a {
      font-size: 0.875rem;
      font-weight: 500;
      color: rgba(230, 237, 243, 0.78);
      padding: 6px 0;
      position: relative;
      transition: color .25s ease;
    }

    .header-nav a::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -2px;
      width: 100%;
      height: 2px;
      border-radius: 4px;
      background: linear-gradient(90deg, var(--c-primary), var(--c-glow));
      transform: scaleX(0);
      transform-origin: left;
      transition: transform .3s ease;
    }

    .header-nav a:hover {
      color: #fff;
    }

    .header-nav a:hover::after,
    .header-nav a.active::after {
      transform: scaleX(1);
    }

    .header-nav a.active {
      color: #fff;
      font-weight: 600;
    }

    .header-nav a.active::before {
      content: '';
      display: inline-block;
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: var(--c-primary);
      box-shadow: 0 0 8px rgba(255, 69, 40, 0.8);
      margin-right: 6px;
      vertical-align: middle;
    }

    .nav-toggle {
      display: none;
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 10px;
      width: 44px;
      height: 44px;
      position: relative;
      cursor: pointer;
      z-index: 20;
    }

    .nav-toggle span {
      display: block;
      width: 20px;
      height: 2px;
      background: var(--c-text);
      margin: 5px auto;
      border-radius: 4px;
      transition: .3s ease;
    }

    .mobile-nav {
      display: none;
      position: fixed;
      top: 0;
      right: 0;
      width: 280px;
      height: 100vh;
      background: var(--c-bg);
      border-left: 1px solid rgba(255, 255, 255, 0.08);
      padding: 100px 32px 32px;
      z-index: 15;
      flex-direction: column;
      gap: 22px;
      transform: translateX(100%);
      transition: transform .35s cubic-bezier(.4, 0, .2, 1);
    }

    .mobile-nav.open {
      transform: translateX(0);
    }

    .mobile-nav a {
      font-size: 1.2rem;
      font-weight: 600;
      color: var(--c-text);
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .mobile-nav a.active {
      background: linear-gradient(120deg, var(--c-primary), var(--c-accent));
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .mobile-nav-close {
      position: absolute;
      top: 18px;
      right: 20px;
      width: 40px;
      height: 40px;
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: 10px;
      background: transparent;
      color: #fff;
      font-size: 1.3rem;
      cursor: pointer;
      line-height: 1;
    }

    /* hero */
    .category-hero {
      position: relative;
      padding: 100px 0 70px;
      background: linear-gradient(rgba(11, 20, 32, 0.88), rgba(11, 20, 32, 0.95)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      overflow: hidden;
    }

    .category-hero::before {
      content: '';
      position: absolute;
      top: -120px;
      right: -80px;
      width: 420px;
      height: 420px;
      background: radial-gradient(circle, rgba(255, 69, 40, 0.18), transparent 70%);
      pointer-events: none;
    }

    .category-hero .hero-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }

    .hero-breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.8rem;
      color: var(--c-muted);
      margin-bottom: 24px;
    }

    .hero-breadcrumb a {
      color: var(--c-muted);
      transition: color .2s;
    }

    .hero-breadcrumb a:hover {
      color: var(--c-glow);
    }

    .hero-breadcrumb .sep {
      color: rgba(255, 255, 255, 0.25);
    }

    .hero-breadcrumb .current {
      color: var(--c-text);
    }

    .category-hero .badge-pill {
      display: inline-block;
      padding: 5px 16px;
      border-radius: 999px;
      background: rgba(255, 69, 40, 0.14);
      border: 1px solid rgba(255, 69, 40, 0.32);
      color: #FF7A5C;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.06em;
      margin-bottom: 20px;
    }

    .category-hero h1 {
      font-size: clamp(2.2rem, 4.2vw, 3.2rem);
      font-weight: 800;
      line-height: 1.2;
      letter-spacing: -0.02em;
      margin: 0 0 16px;
      color: #fff;
    }

    .category-hero h1 .hot-text {
      background: linear-gradient(120deg, #FF4528, #FF7A18, #FFB800);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .category-hero .hero-desc {
      color: var(--c-muted);
      font-size: 1.05rem;
      max-width: 480px;
      margin-bottom: 28px;
    }

    .hero-cta-group {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
      margin-bottom: 28px;
    }

    .btn-primary-custom {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: linear-gradient(120deg, #FF4528 0%, #FF7A18 100%);
      color: #fff;
      font-weight: 600;
      font-size: 0.95rem;
      padding: 14px 32px;
      border: none;
      border-radius: 12px;
      box-shadow: 0 8px 24px rgba(255, 69, 40, 0.3);
      transition: all .3s cubic-bezier(.4, 0, .2, 1);
      cursor: pointer;
    }

    .btn-primary-custom:hover {
      color: #fff;
      filter: brightness(1.1);
      transform: translateY(-2px);
      box-shadow: 0 12px 32px rgba(255, 80, 40, 0.45);
    }

    .btn-primary-custom:active {
      transform: translateY(0);
      filter: brightness(0.95);
    }

    .btn-glass-custom {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.25);
      color: var(--c-text);
      font-weight: 600;
      font-size: 0.95rem;
      padding: 14px 28px;
      border-radius: 12px;
      transition: all .3s ease;
      cursor: pointer;
    }

    .btn-glass-custom:hover {
      background: rgba(255, 255, 255, 0.16);
      border-color: rgba(255, 255, 255, 0.5);
      color: #fff;
      transform: translateY(-2px);
    }

    .hero-stats-row {
      display: grid;
      grid-template-columns: repeat(3, auto);
      gap: 24px;
      max-width: 460px;
    }

    .hero-stat {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .hero-stat .stat-num {
      font-family: var(--font-num);
      font-size: 1.5rem;
      font-weight: 700;
      color: #fff;
    }

    .hero-stat .stat-num .plus {
      color: var(--c-accent);
    }

    .hero-stat .stat-label {
      font-size: 0.72rem;
      color: var(--c-muted);
      line-height: 1.3;
    }

    .hero-visual {
      position: relative;
      border-radius: 24px;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: var(--shadow-lg);
      background: var(--glass-card);
    }

    .hero-visual img {
      width: 100%;
      height: 360px;
      object-fit: cover;
    }

    .hero-visual .visual-overlay {
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      padding: 24px;
      background: linear-gradient(transparent, rgba(11, 20, 32, 0.92));
    }

    .hero-visual .overlay-tag {
      display: inline-block;
      background: rgba(255, 184, 0, 0.14);
      border: 1px solid rgba(255, 184, 0, 0.3);
      color: var(--c-gold);
      border-radius: 999px;
      padding: 5px 14px;
      font-size: 0.75rem;
      margin-bottom: 10px;
    }

    .hero-visual .overlay-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: #fff;
      margin: 0;
    }

    /* section base */
    .page-section {
      padding: var(--space-section) 0;
      position: relative;
    }

    .page-section.section-alt {
      background: var(--c-bg-2);
    }

    .section-header {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 44px;
    }

    .section-header h2 {
      font-size: clamp(1.6rem, 2.8vw, 2.2rem);
      font-weight: 700;
      line-height: 1.3;
      color: #fff;
      margin: 0;
      padding-left: 16px;
      position: relative;
    }

    .section-header h2::before {
      content: '';
      position: absolute;
      left: 0;
      top: 6px;
      bottom: 6px;
      width: 4px;
      border-radius: 4px;
      background: linear-gradient(180deg, var(--c-primary), var(--c-accent));
      box-shadow: 0 0 12px rgba(255, 69, 40, 0.5);
    }

    .section-header .header-desc {
      color: var(--c-muted);
      font-size: 0.95rem;
      max-width: 520px;
      text-align: right;
    }

    /* topic cards */
    .topic-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .topic-card {
      background: var(--glass-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all .3s cubic-bezier(.4, 0, .2, 1);
    }

    .topic-card:hover {
      transform: translateY(-6px);
      border-color: rgba(255, 255, 255, 0.18);
      box-shadow: var(--shadow-lg), 0 0 0 1px rgba(77, 214, 255, 0.08);
    }

    .topic-card .card-media {
      height: 170px;
      position: relative;
      overflow: hidden;
    }

    .topic-card .card-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s ease;
    }

    .topic-card:hover .card-media img {
      transform: scale(1.04);
    }

    .topic-card .card-body {
      padding: 22px;
    }

    .topic-card .card-tag {
      display: inline-block;
      padding: 3px 12px;
      border-radius: 999px;
      background: rgba(255, 184, 0, 0.12);
      color: var(--c-gold);
      font-size: 0.72rem;
      font-weight: 600;
      border: 1px solid rgba(255, 184, 0, 0.25);
      margin-bottom: 14px;
    }

    .topic-card h3 {
      font-size: 1.15rem;
      font-weight: 600;
      color: #fff;
      margin: 0 0 10px;
      line-height: 1.4;
    }

    .topic-card p {
      color: var(--c-muted);
      font-size: 0.875rem;
      line-height: 1.7;
      margin: 0;
    }

    .topic-card .card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--c-glow);
      font-size: 0.8rem;
      font-weight: 500;
      margin-top: 14px;
      transition: gap .2s ease;
    }

    .topic-card .card-link:hover {
      gap: 12px;
      color: #4DE0FF;
    }

    /* flow steps */
    .flow-section {
      position: relative;
    }

    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      position: relative;
      margin-top: 20px;
    }

    .flow-steps::before {
      content: '';
      position: absolute;
      top: 24px;
      left: 8%;
      right: 8%;
      height: 1px;
      border-top: 1px dashed rgba(255, 255, 255, 0.16);
      z-index: 0;
    }

    .flow-step {
      position: relative;
      z-index: 1;
      text-align: center;
      padding: 0 8px;
    }

    .flow-step .step-icon {
      width: 48px;
      height: 48px;
      margin: 0 auto 18px;
      border-radius: 50%;
      background: rgba(255, 69, 40, 0.12);
      border: 1px solid rgba(255, 69, 40, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--c-accent);
      box-shadow: 0 0 20px rgba(255, 69, 40, 0.1);
    }

    .flow-step .step-icon svg {
      width: 22px;
      height: 22px;
      stroke: currentColor;
      stroke-width: 2;
      fill: none;
      stroke-linecap: round;
      stroke-linejoin: round;
    }

    .flow-step h3 {
      font-size: 1rem;
      font-weight: 600;
      color: #fff;
      margin: 0 0 8px;
    }

    .flow-step p {
      font-size: 0.8rem;
      color: var(--c-muted);
      line-height: 1.6;
      margin: 0;
    }

    /* stats band */
    .stats-band {
      background: linear-gradient(rgba(17, 30, 46, 0.85), rgba(11, 20, 32, 0.9)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
      padding: 64px 0;
      border-radius: 24px;
      border: 1px solid rgba(255, 255, 255, 0.08);
      position: relative;
      overflow: hidden;
    }

    .stats-band::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 320px;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--c-primary), transparent);
      box-shadow: 0 0 20px rgba(255, 69, 40, 0.5);
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }

    .stats-grid .stat-num {
      font-family: var(--font-num);
      font-size: clamp(1.8rem, 3vw, 2.6rem);
      font-weight: 700;
      color: #fff;
      line-height: 1.2;
    }

    .stats-grid .stat-num em {
      font-style: normal;
      background: linear-gradient(120deg, #FF4528, #FF7A18);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .stats-grid .stat-label {
      color: var(--c-muted);
      font-size: 0.88rem;
      margin-top: 8px;
    }

    /* asym cards */
    .asym-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 24px;
    }

    .main-card {
      background: linear-gradient(135deg, rgba(255, 69, 40, 0.08), rgba(17, 30, 46, 0.8));
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 20px;
      padding: 36px;
      position: relative;
      overflow: hidden;
    }

    .main-card::before {
      content: '';
      position: absolute;
      top: -60px;
      right: -60px;
      width: 200px;
      height: 200px;
      background: radial-gradient(circle, rgba(77, 214, 255, 0.12), transparent 70%);
    }

    .main-card .card-icon {
      width: 56px;
      height: 56px;
      border-radius: 16px;
      background: rgba(255, 69, 40, 0.16);
      border: 1px solid rgba(255, 69, 40, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--c-accent);
    }

    .main-card h3 {
      font-size: 1.35rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
    }

    .main-card p {
      color: var(--c-muted);
      font-size: 0.95rem;
      max-width: 72%;
    }

    .main-card .feature-list {
      list-style: none;
      margin: 24px 0 0;
      padding: 0;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px 20px;
    }

    .main-card .feature-list li {
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--c-text);
      font-size: 0.86rem;
    }

    .main-card .feature-list li::before {
      content: '';
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--c-glow);
      box-shadow: 0 0 8px rgba(77, 214, 255, 0.5);
      flex-shrink: 0;
    }

    .sub-card-stack {
      display: grid;
      grid-template-rows: 1fr 1fr;
      gap: 24px;
    }

    .sub-card {
      background: var(--glass-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 18px;
      padding: 26px;
      display: flex;
      flex-direction: column;
      transition: border-color .3s, transform .3s;
    }

    .sub-card:hover {
      border-color: rgba(255, 255, 255, 0.18);
      transform: translateY(-3px);
    }

    .sub-card .sub-icon {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: rgba(77, 214, 255, 0.1);
      border: 1px solid rgba(77, 214, 255, 0.25);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--c-glow);
      margin-bottom: 16px;
    }

    .sub-card h4 {
      font-size: 1rem;
      font-weight: 600;
      color: #fff;
      margin-bottom: 8px;
    }

    .sub-card p {
      font-size: 0.83rem;
      color: var(--c-muted);
      margin: 0;
      line-height: 1.6;
    }

    .sub-card a {
      margin-top: auto;
      font-size: 0.8rem;
      color: var(--c-accent);
      font-weight: 500;
    }

    .sub-card a:hover {
      color: var(--c-primary);
    }

    /* featured block */
    .featured-block {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .featured-media {
      border-radius: 24px;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.08);
      box-shadow: var(--shadow-lg);
    }

    .featured-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .featured-content h3 {
      font-size: 1.5rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
    }

    .featured-content p {
      color: var(--c-muted);
      margin-bottom: 18px;
    }

    .featured-list {
      list-style: none;
      padding: 0;
      margin: 0 0 28px;
    }

    .featured-list li {
      position: relative;
      padding-left: 22px;
      margin-bottom: 12px;
      color: var(--c-text);
      font-size: 0.9rem;
    }

    .featured-list li::before {
      content: '';
      position: absolute;
      left: 0;
      top: 8px;
      width: 8px;
      height: 8px;
      border-radius: 2px;
      background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
      transform: rotate(45deg);
    }

    /* FAQ */
    .faq-wrap {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-header-line {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 12px;
    }

    .faq-badge {
      display: inline-block;
      padding: 5px 16px;
      border-radius: 999px;
      background: rgba(255, 184, 0, 0.12);
      border: 1px solid rgba(255, 184, 0, 0.28);
      color: var(--c-gold);
      font-size: 0.75rem;
      font-weight: 600;
    }

    .faq-wrap h2 {
      text-align: center;
    }

    .faq-accordion {
      margin-top: 36px;
    }

    .faq-accordion .accordion-item {
      background: var(--glass-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 16px;
      margin-bottom: 16px;
      overflow: hidden;
    }

    .faq-accordion .accordion-button {
      background: transparent;
      color: var(--c-text);
      font-size: 1rem;
      font-weight: 500;
      padding: 20px 24px;
      box-shadow: none;
      border-radius: 16px;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .faq-accordion .accordion-button::after {
      content: '+';
      width: 28px;
      height: 28px;
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.06);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      color: var(--c-accent);
      transition: transform .3s ease;
      flex-shrink: 0;
    }

    .faq-accordion .accordion-button:not(.collapsed)::after {
      transform: rotate(45deg);
    }

    .faq-accordion .accordion-button:not(.collapsed) {
      background: rgba(255, 69, 40, 0.06);
      border-left: 3px solid var(--c-primary);
      border-radius: 16px 16px 0 0;
      color: #fff;
    }

    .faq-accordion .accordion-body {
      padding: 4px 24px 20px;
      color: var(--c-muted);
      font-size: 0.88rem;
      line-height: 1.7;
    }

    /* divider CTA strip */
    .cta-strip {
      background: linear-gradient(90deg, rgba(255, 69, 40, 0.1), rgba(255, 122, 24, 0.06), rgba(77, 214, 255, 0.1));
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 16px;
      padding: 22px 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      margin: 56px 0;
    }

    .cta-strip p {
      margin: 0;
      color: var(--c-text);
      font-size: 0.95rem;
      font-weight: 500;
    }

    .cta-strip p span {
      color: var(--c-gold);
      font-weight: 700;
    }

    .cta-strip a {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: #fff;
      border-radius: 12px;
      padding: 10px 24px;
      font-size: 0.85rem;
      font-weight: 500;
      white-space: nowrap;
      transition: all .3s ease;
    }

    .cta-strip a:hover {
      background: rgba(255, 255, 255, 0.2);
      border-color: rgba(255, 255, 255, 0.4);
      color: var(--c-glow);
    }

    /* section CTA */
    .section-cta {
      position: relative;
      padding: 80px 0;
      margin-top: 40px;
      background: linear-gradient(135deg, rgba(255, 69, 40, 0.08), rgba(11, 20, 32, 0.6)), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      text-align: center;
      overflow: hidden;
    }

    .section-cta .cta-inner {
      max-width: 680px;
      margin: 0 auto;
      padding: 40px 28px;
      border-radius: 28px;
      background: rgba(17, 30, 46, 0.6);
      border: 1px solid rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
    }

    .section-cta h2 {
      font-size: clamp(1.6rem, 3vw, 2.2rem);
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
    }

    .section-cta p {
      color: var(--c-muted);
      font-size: 0.95rem;
      margin-bottom: 30px;
    }

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

    .cta-btns .btn-glass-custom {
      padding: 13px 24px;
    }

    /* footer */
    .site-footer {
      background: var(--c-bg);
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 64px 0 24px;
      position: relative;
    }

    .site-footer::before {
      content: '';
      position: absolute;
      top: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 480px;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(255, 69, 40, 0.5), rgba(77, 214, 255, 0.3), transparent);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 0.8fr 0.9fr;
      gap: 48px;
      margin-bottom: 48px;
    }

    .footer-brand p {
      color: var(--c-muted);
      font-size: 0.86rem;
      line-height: 1.7;
      margin: 18px 0 0;
      max-width: 280px;
    }

    .footer-col h4 {
      color: var(--c-text);
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 18px;
      position: relative;
      padding-bottom: 8px;
    }

    .footer-col h4::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 28px;
      height: 2px;
      background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
      box-shadow: 0 0 10px rgba(255, 69, 40, 0.4);
      border-radius: 4px;
    }

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

    .footer-col ul li {
      margin-bottom: 10px;
    }

    .footer-col a {
      color: var(--c-muted);
      font-size: 0.84rem;
      transition: color .25s, padding-left .25s;
    }

    .footer-col a:hover {
      color: var(--c-glow);
      padding-left: 4px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
    }

    .footer-bottom .copyright {
      color: var(--c-muted);
      font-size: 0.78rem;
    }

    .footer-links {
      display: flex;
      gap: 22px;
    }

    .footer-links a {
      color: var(--c-muted);
      font-size: 0.78rem;
    }

    .footer-links a:hover {
      color: var(--c-glow);
    }

    @media (max-width: 1199px) {
      .topic-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 991px) {
      .header-nav {
        display: none;
      }

      .nav-toggle {
        display: block;
      }

      .mobile-nav {
        display: flex;
      }

      .brand-logo {
        left: 44px;
        transform: translateY(-50%);
      }

      .header-inner {
        justify-content: space-between;
      }

      .category-hero {
        padding: 70px 0 50px;
      }

      .category-hero .hero-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .hero-visual img {
        height: 280px;
      }

      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }

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

      .featured-block {
        grid-template-columns: 1fr;
        gap: 28px;
      }

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

    @media (max-width: 767px) {
      :root {
        --space-section: 48px;
      }

      .site-header {
        min-height: 60px;
      }

      .header-inner {
        min-height: 60px;
      }

      .brand-logo {
        left: 40px;
      }

      .logo-mark {
        width: 34px;
        height: 34px;
        font-size: 1rem;
      }

      .logo-text strong {
        font-size: 1.1rem;
      }

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

      .category-hero h1 {
        font-size: 2rem;
      }

      .hero-stats-row {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 12px;
      }

      .hero-stat .stat-num {
        font-size: 1.1rem;
      }

      .topic-grid {
        grid-template-columns: 1fr;
        gap: 18px;
      }

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

      .flow-steps::before {
        display: none;
      }

      .flow-step {
        text-align: left;
        display: grid;
        grid-template-columns: 48px 1fr;
        align-items: center;
        gap: 14px;
        padding: 0;
      }

      .flow-step .step-icon {
        margin: 0;
      }

      .flow-step h3 {
        margin-bottom: 4px;
      }

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

      .main-card {
        padding: 24px;
      }

      .main-card .feature-list {
        grid-template-columns: 1fr;
      }

      .main-card p {
        max-width: 100%;
      }

      .section-header {
        flex-direction: column;
        gap: 10px;
      }

      .section-header .header-desc {
        text-align: left;
      }

      .cta-strip {
        flex-direction: column;
        align-items: flex-start;
        padding: 18px 22px;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }

      .btn-primary-custom,
      .btn-glass-custom {
        width: 100%;
        justify-content: center;
      }

      .hero-cta-group {
        flex-direction: column;
        width: 100%;
      }
    }

    @media (max-width: 520px) {
      .category-hero .hero-desc {
        font-size: 0.95rem;
      }

      .hero-stats-row {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
        max-width: 100%;
      }

      .hero-stat .stat-label {
        font-size: 0.65rem;
      }

      .hero-visual img {
        height: 220px;
      }

      .stats-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }

      .faq-accordion .accordion-button {
        font-size: 0.9rem;
        padding: 16px 18px;
      }

      .faq-accordion .accordion-body {
        padding: 4px 18px 16px;
      }

      .mobile-nav {
        width: 260px;
      }
    }

/* roulang page: article */
:root {
  --c-bg: #0B1420;
  --c-bg-secondary: #111E2E;
  --c-glass: rgba(255,255,255,0.06);
  --c-accent-from: #FF4528;
  --c-accent-to: #FF7A18;
  --c-accent-glow: rgba(255,69,40,0.35);
  --c-cyan: #4DD6FF;
  --c-gold: #FFB800;
  --c-text: #E6EDF3;
  --c-text-secondary: #8FA3B8;
  --c-border: rgba(255,255,255,0.12);
  --radius-card: 20px;
  --radius-btn: 12px;
  --radius-input: 12px;
  --radius-badge: 999px;
  --shadow-card: 0 4px 16px rgba(0,0,0,0.2);
  --shadow-hover: 0 16px 48px rgba(0,0,0,0.35);
  --shadow-glow: 0 0 24px rgba(255,69,40,0.35), 0 4px 20px rgba(0,0,0,0.25);
  --space-section: 80px;
  --font-sans: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: Inter, "DIN Alternate", "Bahnschrift", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.75;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: var(--c-cyan);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: #8fe3ff;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

.container {
  max-width: 1240px;
  width: 100%;
  padding-left: 20px;
  padding-right: 20px;
  margin-left: auto;
  margin-right: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11,20,32,0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  height: 72px;
}

.header-container {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 72px;
  gap: 16px;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.header-nav a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--c-text-secondary);
  border-radius: 999px;
  transition: all 0.3s ease;
  position: relative;
}

.header-nav a:hover {
  color: var(--c-text);
  background: rgba(255,255,255,0.06);
}

.header-nav a.active {
  color: #fff;
  background: rgba(255,255,255,0.08);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.12), 0 0 16px rgba(77,214,255,0.08);
}

.header-nav a.active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--c-accent-from), var(--c-accent-to));
  box-shadow: 0 0 8px rgba(255,90,40,0.5);
}

.header-nav-right {
  justify-content: flex-end;
}

.header-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-self: center;
  padding: 6px 10px;
  border-radius: 16px;
  transition: transform 0.3s ease;
}

.brand-logo:hover {
  transform: scale(1.03);
}

.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--c-accent-from), var(--c-accent-to));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 0 24px rgba(255,80,40,0.45);
  line-height: 1;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-text strong {
  font-size: 1.28rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.02em;
}

.logo-text small {
  font-size: 0.72rem;
  color: var(--c-text-secondary);
  letter-spacing: 0.05em;
  font-weight: 500;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--c-border);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.nav-toggle:hover {
  background: rgba(255,255,255,0.12);
}

.nav-toggle .bar {
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--c-accent-from), var(--c-accent-to));
  transition: all 0.3s ease;
  display: block;
}

.nav-toggle.active .bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active .bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active .bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  background: #0B1420;
  border-top: 1px solid var(--c-border);
  padding: 16px 20px 24px;
  gap: 4px;
}

.mobile-menu.open {
  display: flex;
  flex-direction: column;
}

.mobile-menu a {
  display: block;
  padding: 14px 18px;
  border-radius: 12px;
  color: var(--c-text);
  font-size: 1.05rem;
  font-weight: 500;
  transition: background 0.3s ease;
}

.mobile-menu a:hover {
  background: rgba(255,255,255,0.08);
}

/* Breadcrumb */
.breadcrumb-wrap {
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: 14px 0;
  background: rgba(17,30,46,0.35);
}

.breadcrumb-wrap .breadcrumb {
  margin: 0;
  background: transparent;
  padding: 0;
  font-size: 0.85rem;
}

.breadcrumb-wrap .breadcrumb-item {
  color: var(--c-text-secondary);
}

.breadcrumb-wrap .breadcrumb-item a {
  color: var(--c-text-secondary);
  transition: color 0.3s;
}

.breadcrumb-wrap .breadcrumb-item a:hover {
  color: var(--c-cyan);
}

.breadcrumb-wrap .breadcrumb-item.active {
  color: var(--c-text);
  max-width: 360px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.breadcrumb-wrap .breadcrumb-item + .breadcrumb-item::before {
  color: rgba(255,255,255,0.3);
  content: "/";
}

/* Article Main */
.article-page {
  padding: 48px 0 0;
  background: var(--c-bg);
}

.article-main-card {
  background: rgba(17,30,46,0.55);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-card);
  padding: 40px 36px;
  margin-bottom: 32px;
}

.article-header {
  margin-bottom: 28px;
}

.article-header h1 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 800;
  line-height: 1.35;
  color: #fff;
  margin-bottom: 18px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--c-text-secondary);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.meta-tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 999px;
  background: rgba(255,184,0,0.12);
  color: var(--c-gold);
  border: 1px solid rgba(255,184,0,0.25);
  font-size: 0.78rem;
  font-weight: 500;
}

.article-cover {
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 30px;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow-card);
}

.article-cover img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.article-content {
  font-size: 1rem;
  line-height: 1.9;
  color: rgba(230,237,243,0.92);
  max-width: 780px;
}

.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.4;
  color: #fff;
  margin: 2.2rem 0 1rem;
  padding-left: 14px;
  border-left: 4px solid var(--c-accent-from);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
  color: #fff;
  margin: 1.8rem 0 0.8rem;
}

.article-content p {
  margin-bottom: 1.2rem;
}

.article-content blockquote {
  border-left: 3px solid var(--c-cyan);
  background: rgba(77,214,255,0.06);
  padding: 16px 22px;
  margin: 1.6rem 0;
  border-radius: 0 12px 12px 0;
  color: var(--c-text);
  font-style: normal;
}

.article-content ul,
.article-content ol {
  margin-bottom: 1.2rem;
  padding-left: 1.5rem;
}

.article-content ul li,
.article-content ol li {
  margin-bottom: 0.5rem;
}

.article-content img {
  max-width: 100%;
  border-radius: 16px;
  margin: 1.6rem 0;
  box-shadow: var(--shadow-card);
}

.article-content table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--c-border);
  border-radius: 12px;
  overflow: hidden;
  margin: 1.6rem 0;
  font-size: 0.92rem;
}

.article-content th {
  background: rgba(255,255,255,0.08);
  padding: 12px 16px;
  font-weight: 600;
  color: #fff;
  text-align: left;
}

.article-content td {
  padding: 11px 16px;
  border-top: 1px solid var(--c-border);
}

.article-content td:first-child {
  border-left: none;
}

.article-content code {
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--c-border);
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 0.88em;
  color: var(--c-gold);
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

.article-content pre {
  background: rgba(17,30,46,0.7);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  padding: 22px 24px;
  overflow-x: auto;
  margin: 1.6rem 0;
  line-height: 1.7;
}

.article-content pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: var(--c-text);
}

.article-content a {
  color: var(--c-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Article not found */
.article-not-found {
  text-align: center;
  padding: 60px 20px;
}

.article-not-found h2 {
  font-size: 1.6rem;
  color: #fff;
  margin-bottom: 12px;
}

.article-not-found p {
  color: var(--c-text-secondary);
  margin-bottom: 24px;
}

.btn-main {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  background: linear-gradient(120deg, var(--c-accent-from), var(--c-accent-to));
  border: none;
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  min-height: 44px;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(255,69,40,0.3);
  transition: all 0.3s cubic-bezier(.4,0,.2,1);
}

.btn-main:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(255,80,40,0.45);
  color: #fff;
}

.btn-main:active {
  transform: translateY(0);
  filter: brightness(0.95);
}

/* Article Pager */
.article-pager {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 36px;
  background: rgba(17,30,46,0.4);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-card);
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.pager-item {
  flex: 1;
  min-width: 200px;
}

.pager-label {
  display: block;
  font-size: 0.78rem;
  color: var(--c-text-secondary);
  margin-bottom: 4px;
  letter-spacing: 0.03em;
}

.pager-link {
  font-size: 1rem;
  color: var(--c-text);
  font-weight: 600;
  display: inline-block;
  transition: color 0.3s;
}

.pager-link:hover {
  color: var(--c-cyan);
}

.pager-next {
  text-align: right;
}

.back-to-list {
  text-align: left;
  margin-top: 4px;
}

.back-to-list a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--c-text-secondary);
  font-size: 0.9rem;
  transition: color 0.3s;
}

.back-to-list a:hover {
  color: var(--c-cyan);
}

/* Sidebar */
.article-sidebar {
  position: sticky;
  top: 96px;
}

.sidebar-card {
  background: rgba(17,30,46,0.55);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-card);
  padding: 24px;
  margin-bottom: 24px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.sidebar-card:hover {
  border-color: rgba(255,255,255,0.16);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.sidebar-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid rgba(255,255,255,0.08);
  position: relative;
}

.sidebar-card h3::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-accent-from), var(--c-accent-to));
  border-radius: 2px;
}

.sidebar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sidebar-tags .tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--c-text-secondary);
  transition: all 0.3s ease;
}

.sidebar-tags .tag:hover {
  color: var(--c-cyan);
  border-color: rgba(77,214,255,0.4);
  background: rgba(77,214,255,0.08);
}

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

.sidebar-list li {
  margin-bottom: 4px;
}

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

.sidebar-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 10px;
  color: var(--c-text-secondary);
  font-size: 0.9rem;
  transition: all 0.3s;
}

.sidebar-list a::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: linear-gradient(120deg, var(--c-accent-from), var(--c-accent-to));
  flex-shrink: 0;
  opacity: 0.7;
}

.sidebar-list a:hover {
  background: rgba(255,255,255,0.05);
  color: var(--c-cyan);
  padding-left: 16px;
}

.sidebar-promo {
  background: linear-gradient(160deg, rgba(255,69,40,0.1), rgba(77,214,255,0.05)), rgba(17,30,46,0.7);
  border: 1px solid rgba(255,69,40,0.2);
  text-align: center;
}

.sidebar-promo h3 {
  border: none;
  padding-bottom: 0;
}

.sidebar-promo h3::after {
  display: none;
}

.sidebar-promo p {
  font-size: 0.88rem;
  color: var(--c-text-secondary);
  margin-bottom: 18px;
}

.sidebar-promo .btn-main {
  padding: 10px 24px;
  font-size: 0.88rem;
}

/* Related Section */
.related-section {
  padding: var(--space-section) 0;
  background: var(--c-bg);
  position: relative;
}

.related-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  max-width: 900px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
}

.related-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  gap: 16px;
  flex-wrap: wrap;
}

.related-head h2 {
  font-size: clamp(1.5rem, 2.4vw, 1.9rem);
  font-weight: 700;
  color: #fff;
  padding-left: 14px;
  border-left: 4px solid var(--c-accent-from);
  margin: 0;
  line-height: 1.3;
}

.related-head .more-link {
  color: var(--c-text-secondary);
  font-size: 0.9rem;
  transition: color 0.3s;
}

.related-head .more-link:hover {
  color: var(--c-cyan);
}

.related-card {
  background: rgba(17,30,46,0.55);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: all 0.3s cubic-bezier(.4,0,.2,1);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.related-card:hover {
  border-color: rgba(255,255,255,0.18);
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.35), 0 0 0 1px rgba(77,214,255,0.08);
}

.related-card .card-img {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.related-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.related-card:hover .card-img img {
  transform: scale(1.05);
}

.related-card .card-body {
  padding: 20px 22px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.related-card .card-tag {
  align-self: flex-start;
  padding: 3px 12px;
  border-radius: 999px;
  background: rgba(255,184,0,0.12);
  color: var(--c-gold);
  border: 1px solid rgba(255,184,0,0.25);
  font-size: 0.75rem;
  margin-bottom: 12px;
}

.related-card h3 {
  font-size: 1.08rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card p {
  font-size: 0.88rem;
  color: var(--c-text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card .card-link {
  margin-top: auto;
  color: var(--c-cyan);
  font-size: 0.85rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.related-card .card-link:hover {
  gap: 10px;
}

/* CTA Section */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(rgba(11,20,32,0.88), rgba(11,20,32,0.95)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  position: relative;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.cta-inner {
  background: rgba(17,30,46,0.5);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 28px;
  padding: 56px 32px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-inner::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255,69,40,0.12);
  filter: blur(48px);
}

.cta-inner::after {
  content: "";
  position: absolute;
  bottom: -40px;
  left: -40px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(77,214,255,0.08);
  filter: blur(36px);
}

.cta-inner h2 {
  font-size: clamp(1.7rem, 3.2vw, 2.3rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.cta-inner p {
  font-size: 1rem;
  color: var(--c-text-secondary);
  max-width: 560px;
  margin: 0 auto 28px;
  position: relative;
  z-index: 1;
}

.cta-btns {
  display: flex;
  gap: 14px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.25);
  color: var(--c-text);
  font-size: 0.95rem;
  font-weight: 500;
  min-height: 44px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.16);
  border-color: rgba(255,255,255,0.5);
  color: #fff;
}

/* FAQ in sidebar */
.faq-item {
  border-bottom: 1px solid rgba(255,255,255,0.07);
  padding: 14px 0;
}

.faq-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.faq-q {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--c-text);
  margin-bottom: 6px;
  display: flex;
  gap: 8px;
}

.faq-q::before {
  content: "";
  flex-shrink: 0;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--c-accent-from);
  margin-top: 10px;
}

.faq-a {
  font-size: 0.85rem;
  color: var(--c-text-secondary);
  line-height: 1.6;
  margin-left: 12px;
}

/* Footer */
.site-footer {
  background: var(--c-bg);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 64px 0 28px;
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,69,40,0.3), rgba(77,214,255,0.2), transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--c-text-secondary);
  font-size: 0.9rem;
  margin-top: 16px;
  line-height: 1.7;
  max-width: 340px;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--c-text);
  margin-bottom: 18px;
  padding-bottom: 8px;
  position: relative;
  display: inline-block;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-accent-from), var(--c-accent-to));
  border-radius: 2px;
}

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

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul a {
  color: var(--c-text-secondary);
  font-size: 0.9rem;
  transition: color 0.3s;
}

.footer-col ul a:hover {
  color: var(--c-cyan);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 0.82rem;
  color: var(--c-text-secondary);
}

.footer-links {
  display: flex;
  gap: 16px;
}

.footer-bottom .footer-links a {
  color: var(--c-text-secondary);
  transition: color 0.3s;
}

.footer-bottom .footer-links a:hover {
  color: var(--c-cyan);
}

/* Responsive */
@media (max-width: 991px) {
  .header-nav {
    display: none;
  }
  .header-container {
    grid-template-columns: 1fr auto 1fr;
  }
  .header-right {
    justify-content: flex-end;
  }
  .nav-toggle {
    display: flex;
  }
  .related-card {
    margin-bottom: 16px;
  }
  .article-sidebar {
    position: static;
    margin-top: 32px;
  }
}

@media (max-width: 767px) {
  :root {
    --space-section: 56px;
  }
  .site-header, .header-container {
    height: 64px;
  }
  .header-container {
    grid-template-columns: 1fr auto 1fr;
    gap: 8px;
  }
  .logo-mark {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    font-size: 1.1rem;
  }
  .logo-text strong {
    font-size: 1.1rem;
  }
  .logo-text small {
    font-size: 0.65rem;
  }
  .article-main-card {
    padding: 24px 20px;
  }
  .article-page {
    padding-top: 24px;
  }
  .article-meta {
    gap: 6px;
    font-size: 0.8rem;
  }
  .article-pager {
    flex-direction: column;
    padding: 20px;
  }
  .pager-next {
    text-align: left;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .cta-inner {
    padding: 40px 20px;
  }
  .cta-btns {
    flex-direction: column;
  }
  .cta-btns .btn-main,
  .cta-btns .btn-ghost {
    width: 100%;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .footer-links {
    justify-content: center;
  }
  .breadcrumb-wrap .breadcrumb-item.active {
    max-width: 200px;
  }
  .related-head h2 {
    font-size: 1.35rem;
  }
}

@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .article-main-card {
    padding: 20px 16px;
    border-radius: 16px;
  }
  .article-header h1 {
    font-size: 1.4rem;
  }
  .logo-text small {
    display: none;
  }
  .logo-text strong {
    font-size: 1.2rem;
  }
  .article-content {
    font-size: 0.95rem;
  }
  .article-content blockquote {
    padding: 12px 16px;
  }
  .cta-inner h2 {
    font-size: 1.5rem;
  }
}

/* roulang page: category2 */
:root {
      --c-bg: #0B1420;
      --c-bg-2: #111E2E;
      --c-primary: #4DD6FF;
      --c-accent-1: #FF4528;
      --c-accent-2: #FF7A18;
      --c-gold: #FFB800;
      --c-text: #E6EDF3;
      --c-text-2: #8FA3B8;
      --c-border: rgba(255, 255, 255, 0.12);
      --c-glass: rgba(255, 255, 255, 0.06);
      --radius-btn: 12px;
      --radius-card: 20px;
      --radius-img: 16px;
      --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.2);
      --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.35);
      --space-section: 80px;
      --font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }
    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-family);
      font-size: 1rem;
      line-height: 1.75;
      background-color: var(--c-bg);
      color: var(--c-text);
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      display: block;
    }
    a {
      color: inherit;
      text-decoration: none;
    }
    button {
      border: none;
      background: none;
      cursor: pointer;
    }
    ul,
    ol {
      list-style: none;
    }
    h1,
    h2,
    h3,
    h4 {
      line-height: 1.3;
      font-weight: 700;
    }
    :focus-visible {
      outline: 2px solid #4DD6FF;
      outline-offset: 2px;
    }
    .container {
      max-width: 1240px;
      padding-inline: 24px;
    }
    @media (max-width: 768px) {
      .container {
        padding-inline: 16px;
      }
    }
    .section {
      padding-block: var(--space-section);
    }
    @media (max-width: 768px) {
      .section {
        padding-block: 48px;
      }
    }

    /* ===== 导航 ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(11, 20, 32, 0.75);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      height: 72px;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 100%;
    }
    .header-nav {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .header-nav-left {
      flex: 1;
      justify-content: flex-start;
    }
    .header-nav-right {
      flex: 1;
      justify-content: flex-end;
    }
    .header-nav a {
      font-size: .95rem;
      color: #B0C4D8;
      font-weight: 500;
      padding: 6px 2px;
      position: relative;
      transition: color .25s;
    }
    .header-nav a:hover {
      color: #fff;
    }
    .header-nav a.active {
      color: #fff;
    }
    .header-nav a.active::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -4px;
      width: 100%;
      height: 2px;
      border-radius: 2px;
      background: linear-gradient(90deg, #FF4528, #FF7A18);
      box-shadow: 0 0 12px rgba(255, 90, 30, .5);
    }
    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
      margin-inline: 30px;
    }
    .logo-mark {
      width: 38px;
      height: 38px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, #FF4528, #FF7A18);
      color: #fff;
      font-size: 20px;
      font-weight: 800;
      box-shadow: 0 0 16px rgba(255, 69, 40, .4);
    }
    .logo-text {
      display: flex;
      flex-direction: column;
      line-height: 1.1;
    }
    .logo-text strong {
      font-size: 1.2rem;
      font-weight: 800;
      letter-spacing: .02em;
    }
    .logo-text small {
      font-size: .72rem;
      color: var(--c-text-2);
      letter-spacing: .08em;
    }
    .nav-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border-radius: 10px;
      border: 1px solid rgba(255, 255, 255, .12);
      background: rgba(255, 255, 255, .05);
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
      transition: all .3s;
    }
    .nav-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      border-radius: 2px;
      background: #E6EDF3;
      transition: all .3s;
    }
    .nav-toggle.active span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }
    .nav-toggle.active span:nth-child(2) {
      opacity: 0;
    }
    .nav-toggle.active span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }
    .mobile-menu {
      display: none;
      max-height: 0;
      overflow: hidden;
      transition: max-height .4s ease;
      background: #0B1420;
    }
    .mobile-menu.open {
      max-height: 320px;
    }
    .mobile-menu a {
      display: block;
      padding: 14px 24px;
      color: #E6EDF3;
      font-weight: 500;
      border-top: 1px solid rgba(255, 255, 255, .06);
      font-size: 1rem;
    }
    .mobile-menu a:hover {
      color: #FF7A18;
    }
    .mobile-menu a.active {
      color: #FF7A18;
      border-left: 3px solid #FF4528;
    }
    .mobile-menu .menu-close {
      padding: 10px 24px;
      text-align: right;
      color: var(--c-text-2);
      font-size: .8125rem;
    }

    /* ===== Hero ===== */
    .page-hero {
      position: relative;
      padding-block: 72px;
      background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
      overflow: hidden;
    }
    .page-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(100deg, rgba(11, 20, 32, .95) 20%, rgba(11, 20, 32, .78) 55%, rgba(17, 30, 46, .65));
    }
    .page-hero::after {
      content: '';
      position: absolute;
      width: 500px;
      height: 500px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(255, 90, 40, .15), transparent 70%);
      top: -100px;
      right: -100px;
      pointer-events: none;
    }
    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content {
      max-width: 560px;
    }
    .hero-badge {
      display: inline-block;
      padding: 6px 16px;
      border-radius: 999px;
      background: rgba(255, 184, 0, .12);
      border: 1px solid rgba(255, 184, 0, .3);
      color: #FFB800;
      font-size: .8125rem;
      font-weight: 500;
      margin-bottom: 20px;
      letter-spacing: .03em;
    }
    .page-hero h1 {
      font-size: clamp(2.2rem, 4.2vw, 3.2rem);
      font-weight: 800;
      margin-bottom: 16px;
      position: relative;
      display: inline-block;
      line-height: 1.2;
    }
    .page-hero h1::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 6px;
      width: 100%;
      height: 12px;
      background: linear-gradient(90deg, rgba(255, 69, 40, .25), transparent);
      z-index: -1;
    }
    .hero-sub {
      font-size: 1.05rem;
      color: #B0C4D8;
      max-width: 480px;
      margin-bottom: 28px;
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 28px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 12px 28px;
      border-radius: 12px;
      font-weight: 600;
      font-size: .95rem;
      transition: all .3s cubic-bezier(.4, 0, .2, 1);
      text-decoration: none;
    }
    .btn-primary {
      background: linear-gradient(120deg, #FF4528, #FF7A18);
      color: #fff;
      box-shadow: 0 8px 24px rgba(255, 69, 40, .3);
    }
    .btn-primary:hover {
      filter: brightness(1.1);
      transform: translateY(-2px);
      box-shadow: 0 12px 32px rgba(255, 80, 40, .45);
      color: #fff;
    }
    .btn-primary:active {
      transform: translateY(0);
      filter: brightness(.95);
    }
    .btn-ghost {
      background: rgba(255, 255, 255, .08);
      border: 1px solid rgba(255, 255, 255, .25);
      color: #E6EDF3;
    }
    .btn-ghost:hover {
      background: rgba(255, 255, 255, .16);
      border-color: rgba(255, 255, 255, .5);
      color: #fff;
    }
    .hero-tags {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }
    .hero-tags span {
      padding: 4px 12px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .06);
      border: 1px solid rgba(255, 255, 255, .12);
      color: var(--c-text-2);
      font-size: .8125rem;
      transition: all .25s;
    }
    .hero-tags span:hover {
      color: #fff;
      border-color: rgba(255, 255, 255, .3);
    }
    .hero-visual {
      position: relative;
    }
    .hero-visual img {
      width: 100%;
      border-radius: 20px;
      box-shadow: 0 24px 80px rgba(0, 0, 0, .4);
      border: 1px solid rgba(255, 255, 255, .1);
    }
    .hero-visual::before {
      content: '';
      position: absolute;
      inset: 20px -20px -20px 20px;
      border-radius: 24px;
      background: linear-gradient(135deg, rgba(255, 69, 40, .2), rgba(77, 214, 255, .1));
      z-index: -1;
    }

    /* ===== 卖点 ===== */
    .features {
      background: var(--c-bg);
      padding-block: var(--space-section);
    }
    .section-head {
      margin-bottom: 48px;
    }
    .section-head .kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: #FFB800;
      font-size: .8125rem;
      font-weight: 600;
      letter-spacing: .04em;
      margin-bottom: 8px;
    }
    .section-head .kicker::before {
      content: '';
      width: 20px;
      height: 2px;
      border-radius: 2px;
      background: linear-gradient(90deg, #FF4528, #FFB800);
    }
    .section-head h2 {
      font-size: clamp(1.6rem, 2.8vw, 2.2rem);
      font-weight: 700;
      margin-bottom: 12px;
      position: relative;
      padding-left: 14px;
    }
    .section-head h2::before {
      content: '';
      position: absolute;
      left: 0;
      top: 8px;
      bottom: 8px;
      width: 4px;
      border-radius: 4px;
      background: linear-gradient(180deg, #FF4528, #FF7A18);
      box-shadow: 0 0 8px rgba(255, 69, 40, .5);
    }
    .section-head .lead {
      color: var(--c-text-2);
      max-width: 640px;
      font-size: .95rem;
    }
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .feature-card {
      background: rgba(17, 30, 46, .55);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid rgba(255, 255, 255, .08);
      border-radius: 20px;
      padding: 28px;
      transition: all .3s cubic-bezier(.4, 0, .2, 1);
      position: relative;
      overflow: hidden;
    }
    .feature-card:hover {
      transform: translateY(-6px);
      border-color: rgba(255, 255, 255, .18);
      box-shadow: 0 16px 48px rgba(0, 0, 0, .35), 0 0 0 1px rgba(77, 214, 255, .08);
    }
    .feature-card .icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(255, 69, 40, .1);
      border: 1px solid rgba(255, 69, 40, .2);
      margin-bottom: 16px;
      color: #FF7A18;
    }
    .feature-card h3 {
      font-size: 1.15rem;
      font-weight: 600;
      margin-bottom: 8px;
    }
    .feature-card p {
      color: var(--c-text-2);
      font-size: .95rem;
      margin: 0;
      line-height: 1.7;
    }

    /* ===== 内容主题 ===== */
    .topics {
      background: #0E1926;
      padding-block: var(--space-section);
    }
    .topics-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .topic-card {
      border-radius: 20px;
      overflow: hidden;
      background: rgba(17, 30, 46, .55);
      border: 1px solid rgba(255, 255, 255, .08);
      transition: all .3s cubic-bezier(.4, 0, .2, 1);
    }
    .topic-card:hover {
      transform: translateY(-6px);
      border-color: rgba(255, 255, 255, .18);
      box-shadow: 0 16px 48px rgba(0, 0, 0, .35);
    }
    .topic-card .topic-media {
      height: 200px;
      position: relative;
      overflow: hidden;
    }
    .topic-card .topic-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .5s ease;
    }
    .topic-card:hover .topic-media img {
      transform: scale(1.05);
    }
    .topic-card .topic-media::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(11, 20, 32, .85), transparent);
    }
    .topic-card .topic-body {
      padding: 24px;
    }
    .topic-card h3 {
      font-size: 1.2rem;
      font-weight: 600;
      margin-bottom: 8px;
    }
    .topic-card p {
      color: var(--c-text-2);
      font-size: .925rem;
      margin-bottom: 16px;
      line-height: 1.6;
    }
    .topic-tags {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
    }
    .topic-tags span {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 999px;
      background: rgba(255, 184, 0, .12);
      color: #FFB800;
      border: 1px solid rgba(255, 184, 0, .25);
      font-size: .75rem;
      font-weight: 500;
    }
    .topic-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin-top: 16px;
      font-size: .875rem;
      font-weight: 600;
      color: #4DD6FF;
      transition: gap .3s;
    }
    .topic-link:hover {
      gap: 10px;
      color: #7be2ff;
    }

    /* ===== 适用场景 ===== */
    .scenes {
      background: var(--c-bg);
      padding-block: var(--space-section);
    }
    .scenes-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .scenes-left {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .scene-card {
      background: rgba(17, 30, 46, .55);
      border: 1px solid rgba(255, 255, 255, .08);
      border-radius: 20px;
      padding: 28px;
      transition: all .3s;
    }
    .scene-card:hover {
      transform: translateY(-4px);
      border-color: rgba(255, 255, 255, .18);
      box-shadow: 0 12px 32px rgba(0, 0, 0, .3);
    }
    .scene-card h3 {
      font-size: 1.15rem;
      font-weight: 600;
      margin-bottom: 8px;
    }
    .scene-card p {
      color: var(--c-text-2);
      font-size: .95rem;
      line-height: 1.65;
      margin: 0;
    }
    .scene-tag {
      display: inline-block;
      margin-top: 12px;
      padding: 4px 12px;
      border-radius: 999px;
      background: rgba(77, 214, 255, .1);
      border: 1px solid rgba(77, 214, 255, .25);
      color: #4DD6FF;
      font-size: .75rem;
    }
    .scene-card-lg {
      background: linear-gradient(135deg, rgba(255, 69, 40, .1), rgba(17, 30, 46, .55));
      border-color: rgba(255, 69, 40, .2);
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    /* ===== 流程 ===== */
    .process {
      background: var(--c-bg-2);
      padding-block: var(--space-section);
    }
    .process-steps {
      display: flex;
      gap: 32px;
      position: relative;
    }
    .process-steps::before {
      content: '';
      position: absolute;
      top: 24px;
      left: 5%;
      right: 5%;
      height: 2px;
      background: rgba(255, 255, 255, .1);
    }
    .process-step {
      flex: 1;
      position: relative;
      z-index: 1;
    }
    .step-num {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      color: #fff;
      background: linear-gradient(120deg, #FF4528, #FF7A18);
      box-shadow: 0 8px 24px rgba(255, 69, 40, .3);
    }
    .process-step h3 {
      font-size: 1.05rem;
      font-weight: 600;
      margin-bottom: 6px;
    }
    .process-step p {
      color: var(--c-text-2);
      font-size: .875rem;
      line-height: 1.6;
      margin: 0;
    }

    /* ===== 分隔CTA ===== */
    .cta-divider {
      position: relative;
      padding-block: 48px;
      background: linear-gradient(90deg, rgba(255, 69, 40, .15), rgba(77, 214, 255, .08), rgba(255, 184, 0, .1));
      border-top: 1px solid rgba(255, 255, 255, .08);
      border-bottom: 1px solid rgba(255, 255, 255, .08);
    }
    .cta-divider .inner {
      text-align: center;
      color: #E6EDF3;
      font-size: clamp(1.1rem, 2vw, 1.4rem);
      font-weight: 600;
      line-height: 1.5;
    }
    .cta-divider .inner span {
      background: linear-gradient(120deg, #FF4528, #FF7A18);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    /* ===== FAQ ===== */
    .faq {
      background: var(--c-bg);
      padding-block: var(--space-section);
    }
    .faq-wrap {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: rgba(17, 30, 46, .55);
      border: 1px solid rgba(255, 255, 255, .08);
      border-radius: 16px;
      margin-bottom: 16px;
      transition: all .3s;
    }
    .faq-item.open {
      border-color: rgba(255, 69, 40, .3);
    }
    .faq-toggle {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 20px 24px;
      color: #E6EDF3;
      font-weight: 600;
      font-size: 1rem;
      text-align: left;
      gap: 16px;
      border-radius: 16px;
      transition: all .3s;
    }
    .faq-toggle:hover {
      color: #fff;
    }
    .faq-toggle::after {
      content: '+';
      font-size: 1.4rem;
      color: #FF7A18;
      transition: transform .3s;
      flex-shrink: 0;
    }
    .faq-item.open .faq-toggle::after {
      transform: rotate(45deg);
    }
    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height .35s ease;
    }
    .faq-body p {
      padding: 0 24px 20px;
      color: var(--c-text-2);
      font-size: .925rem;
      line-height: 1.7;
      margin: 0;
    }

    /* ===== 底部CTA ===== */
    .cta-section {
      position: relative;
      padding-block: var(--space-section);
      background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
      overflow: hidden;
    }
    .cta-section::before {
      content: '';
      position: absolute;
      inset: 0;
      background: rgba(11, 20, 32, .88);
    }
    .cta-section .container {
      position: relative;
      z-index: 2;
      text-align: center;
    }
    .cta-section h2 {
      font-size: clamp(1.6rem, 2.8vw, 2.2rem);
      font-weight: 700;
      margin-bottom: 12px;
    }
    .cta-section p {
      color: #B0C4D8;
      margin-bottom: 28px;
      max-width: 520px;
      margin-inline: auto;
    }
    .cta-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: #0B1420;
      border-top: 1px solid rgba(255, 255, 255, .06);
      padding-block: 48px 24px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 32px;
    }
    .footer-brand .brand-logo {
      margin-inline: 0;
    }
    .footer-brand p {
      color: var(--c-text-2);
      font-size: .875rem;
      margin-top: 16px;
      max-width: 340px;
      line-height: 1.7;
    }
    .footer-col h4 {
      font-size: .875rem;
      font-weight: 600;
      color: #E6EDF3;
      margin-bottom: 16px;
      position: relative;
      padding-bottom: 8px;
    }
    .footer-col h4::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 24px;
      height: 2px;
      background: linear-gradient(90deg, #FF4528, #FF7A18);
      border-radius: 2px;
    }
    .footer-col ul li {
      margin-bottom: 8px;
    }
    .footer-col a {
      color: var(--c-text-2);
      font-size: .875rem;
      transition: color .25s;
    }
    .footer-col a:hover {
      color: #4DD6FF;
    }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, .06);
      gap: 16px;
      flex-wrap: wrap;
    }
    .footer-bottom .copyright {
      color: #64788f;
      font-size: .8125rem;
    }
    .footer-links {
      display: flex;
      gap: 20px;
    }
    .footer-links a {
      color: var(--c-text-2);
      font-size: .8125rem;
      transition: color .25s;
    }
    .footer-links a:hover {
      color: #4DD6FF;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 991px) {
      .header-nav {
        display: none;
      }
      .nav-toggle {
        display: flex;
      }
      .brand-logo {
        margin-inline: 0;
      }
      .mobile-menu {
        display: block;
        position: absolute;
        left: 0;
        right: 0;
        top: 72px;
        background: rgba(11, 20, 32, .97);
        border-bottom: 1px solid rgba(255, 255, 255, .08);
        box-shadow: 0 24px 48px rgba(0, 0, 0, .3);
      }
      .header-inner {
        position: relative;
      }
    }
    @media (max-width: 768px) {
      :root {
        --space-section: 48px;
      }
      .site-header {
        height: 60px;
      }
      .mobile-menu {
        top: 60px;
      }
      .page-hero {
        padding-block: 48px;
      }
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .hero-visual {
        order: -1;
      }
      .hero-visual img {
        max-height: 240px;
        object-fit: cover;
      }
      .hero-content {
        text-align: center;
      }
      .hero-sub {
        margin-inline: auto;
      }
      .hero-actions {
        justify-content: center;
      }
      .hero-tags {
        justify-content: center;
      }
      .feature-grid {
        grid-template-columns: 1fr;
      }
      .topics-grid {
        grid-template-columns: 1fr;
      }
      .scenes-grid {
        grid-template-columns: 1fr;
      }
      .process-steps {
        flex-direction: column;
        gap: 24px;
      }
      .process-steps::before {
        display: none;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
      .cta-actions .btn {
        width: 100%;
        max-width: 320px;
      }
      .btn {
        padding: 12px 20px;
      }
    }
    @media (max-width: 520px) {
      .logo-text small {
        display: none;
      }
      .brand-logo {
        gap: 8px;
      }
      .page-hero h1 {
        font-size: 2rem;
      }
      .section-head h2 {
        font-size: 1.5rem;
      }
      .feature-card,
      .scene-card {
        padding: 20px;
      }
      .topic-card .topic-body {
        padding: 20px;
      }
    }