/* roulang page: index */
:root{
  --bg-page:#0B0F1C; --bg-elev:#111827; --glass-bg:rgba(255,255,255,0.05);
  --glass-border:rgba(255,255,255,0.12); --primary:#3D7EFF; --primary-deep:#1F4FD8;
  --accent:#2EE6A8; --text-main:#F1F5FB; --text-sub:#94A3B8; --warning:#F5B94A;
  --radius-card:18px; --radius-btn:999px;
  --shadow-card:0 10px 30px rgba(0,0,0,0.25);
  --shadow-hover:0 16px 40px rgba(29,78,216,0.15);
  --container-max:1200px; --space-section:90px;
  --font-main:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-main);background:var(--bg-page);color:var(--text-main);line-height:1.75;font-size:0.95rem;min-height:100vh;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .25s}
button{font-family:inherit;border:0;background:none;cursor:pointer;font-size:inherit}
input,textarea{font-family:inherit;font-size:inherit;outline:none}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.container{max-width:var(--container-max);margin:0 auto;padding:0 24px}
.section{padding-block:var(--space-section)}
.section-head{text-align:center;margin-bottom:48px}
.section-head h2{font-size:clamp(1.4rem,2.5vw,2rem);font-weight:600;letter-spacing:-0.01em;margin-bottom:10px}
.section-head p{color:var(--text-sub);font-size:0.9rem;max-width:520px;margin:0 auto}

/* ===== 顶部双层导航 ===== */
.site-header{position:sticky;top:0;z-index:100}
.header-top{height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:0 24px;background:rgba(11,15,28,0.82);backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,0.06)}
.header-top .brand{display:flex;align-items:center;gap:10px;user-select:none}
.brand-mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;font-weight:700;box-shadow:0 0 16px rgba(61,126,255,0.4)}
.brand-text{font-size:1.15rem;font-weight:700;color:var(--text-main);letter-spacing:-0.01em}
.brand-text span{color:var(--accent)}
.header-search{flex:1;max-width:460px;position:relative}
.header-search input{width:100%;height:42px;border-radius:var(--radius-btn);background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.1);padding:0 46px 0 18px;color:var(--text-main);font-size:0.9rem;backdrop-filter:blur(8px);transition:border-color .3s,box-shadow .3s}
.header-search input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(46,230,168,0.15)}
.header-search i{position:absolute;right:18px;top:50%;transform:translateY(-50%);color:var(--text-sub);font-size:0.9rem;pointer-events:none}
.header-download{display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 24px;border-radius:var(--radius-btn);background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-weight:600;font-size:0.9rem;box-shadow:0 0 20px rgba(61,126,255,0.4);transition:transform .25s,box-shadow .25s}
.header-download:hover{transform:translateY(-2px);box-shadow:0 0 28px rgba(61,126,255,0.55)}
.header-download:active{transform:translateY(0) scale(0.98)}
.header-download i{font-size:0.85rem}
.nav-bar{height:48px;background:rgba(11,15,28,0.72);backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,0.05);overflow-x:auto;scrollbar-width:none}
.nav-bar::-webkit-scrollbar{display:none}
.nav-tabs{display:flex;align-items:center;height:100%;padding:0 24px;gap:8px;min-width:max-content}
.nav-tab{display:inline-flex;align-items:center;gap:6px;padding:0 18px;height:32px;border-radius:var(--radius-btn);color:var(--text-sub);font-size:0.85rem;font-weight:500;transition:all .25s;white-space:nowrap}
.nav-tab:hover{color:var(--text-main);background:rgba(255,255,255,0.06)}
.nav-tab.active{background:linear-gradient(135deg,rgba(61,126,255,0.25),rgba(46,230,168,0.2));color:var(--text-main);border:1px solid rgba(61,126,255,0.3);box-shadow:0 0 14px rgba(61,126,255,0.2)}
.nav-tab i{font-size:0.8rem;opacity:.7}

/* ===== Hero ===== */
.hero{position:relative;min-height:620px;display:flex;align-items:center;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 20% 30%,rgba(46,230,168,0.10),transparent 55%),radial-gradient(ellipse at 80% 70%,rgba(61,126,255,0.14),transparent 60%)}
.hero::after{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,0.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.025) 1px,transparent 1px);background-size:44px 44px;pointer-events:none}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr 0.9fr;gap:48px;align-items:center;padding-block:60px}
.hero-content h1{font-size:clamp(2.2rem,4.5vw,3.4rem);font-weight:700;letter-spacing:-0.01em;line-height:1.2;margin-bottom:18px;background:linear-gradient(120deg,var(--text-main) 40%,var(--accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-content p.subtitle{font-size:1.05rem;color:var(--text-sub);max-width:440px;margin-bottom:30px;line-height:1.7}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:28px}
.btn-primary{display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 32px;border-radius:var(--radius-btn);background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-weight:600;font-size:0.95rem;box-shadow:0 0 24px rgba(61,126,255,0.5);transition:all .3s}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(61,126,255,0.6);color:#fff}
.btn-primary:active{transform:translateY(0) scale(0.98)}
.btn-ghost{display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 28px;border-radius:var(--radius-btn);background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.15);color:var(--text-main);font-weight:500;font-size:0.9rem;backdrop-filter:blur(8px);transition:all .3s}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);background:rgba(46,230,168,0.06)}
.btn-ghost:active{transform:scale(0.98)}
.hero-meta{display:flex;gap:10px;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:6px;background:rgba(46,230,168,0.15);color:var(--accent);font-size:0.78rem;font-weight:500}
.badge i{font-size:0.7rem}
.hero-visual{display:flex;justify-content:center;position:relative}
.phone-frame{width:290px;border-radius:30px;border:1px solid rgba(255,255,255,0.2);background:rgba(255,255,255,0.07);backdrop-filter:blur(14px);padding:12px;box-shadow:0 20px 60px rgba(0,0,0,0.45);position:relative;transform:rotate(3deg)}
.phone-notch{width:80px;height:22px;background:#1a2333;border-radius:12px;margin:0 auto 10px}
.phone-frame img{border-radius:18px;width:100%;height:auto;object-fit:cover}
.phone-badge{position:absolute;bottom:-14px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-size:0.75rem;font-weight:600;padding:6px 18px;border-radius:var(--radius-btn);box-shadow:0 8px 24px rgba(46,230,168,0.3);white-space:nowrap;z-index:3}

/* ===== 价值条目 ===== */
.values-section{background:var(--bg-page);position:relative}
.values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;perspective:800px}
.value-item{display:flex;flex-direction:column;gap:14px;padding:28px 24px;border-radius:var(--radius-card);transition:all .35s;background:transparent;border:1px solid transparent}
.value-item:nth-child(2){transform:translateY(24px)}
.value-item:nth-child(4){transform:translateY(24px)}
.value-item:hover{transform:none;background:var(--glass-bg);border-color:var(--glass-border);box-shadow:var(--shadow-card)}
.value-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;background:linear-gradient(135deg,rgba(61,126,255,0.25),rgba(46,230,168,0.2));color:var(--accent);margin-bottom:4px}
.value-item:nth-child(odd) .value-icon{color:var(--primary);background:linear-gradient(135deg,rgba(61,126,255,0.2),rgba(255,255,255,0.05))}
.value-item h3{font-size:1.05rem;font-weight:600}
.value-item p{color:var(--text-sub);font-size:0.85rem;line-height:1.6}

/* ===== 截图轮播 ===== */
.screenshots-section{background:var(--bg-elev);position:relative;overflow:hidden}
.screenshots-section::before{content:'';position:absolute;top:-80px;right:-80px;width:300px;height:300px;background:radial-gradient(circle,rgba(46,230,168,0.08),transparent 70%)}
.carousel{position:relative;max-width:900px;margin:0 auto}
.carousel-track{display:flex;overflow:hidden;gap:0;border-radius:24px}
.carousel-slide{flex:0 0 100%;min-width:0;display:none;position:relative;aspect-ratio:16/10;transition:opacity .5s,scale .4s}
.carousel-slide.active{display:block;animation:fadeIn .5s ease}
.carousel-slide img{width:100%;height:100%;object-fit:cover;border-radius:24px;border:1px solid rgba(255,255,255,0.12)}
.carousel-slide::after{content:'';position:absolute;inset:0;border-radius:24px;background:linear-gradient(0deg,rgba(0,0,0,0.35),transparent 50%);pointer-events:none}
.carousel-caption{position:absolute;bottom:24px;left:28px;right:28px;z-index:2;color:#fff}
.carousel-caption h3{font-size:1.15rem;margin-bottom:4px}
.carousel-caption p{font-size:0.82rem;opacity:.85}
.carousel-nav{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,0.08);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,0.15);color:#fff;display:flex;align-items:center;justify-content:center;font-size:0.9rem;transition:all .3s;z-index:5}
.carousel-nav:hover{border-color:var(--accent);color:var(--accent)}
.carousel-nav.prev{left:12px}
.carousel-nav.next{right:12px}
.carousel-dots{display:flex;justify-content:center;gap:8px;margin-top:24px}
.carousel-dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,0.2);transition:all .35s;border:0}
.carousel-dot.active{width:22px;border-radius:6px;background:var(--accent)}
@keyframes fadeIn{from{opacity:0;transform:scale(0.98)}to{opacity:1;transform:scale(1)}}

/* ===== 最新动态 CMS ===== */
.news-section{background:var(--bg-page)}
.news-layout{display:grid;grid-template-columns:1fr 1.4fr;gap:40px;align-items:start}
.news-featured{text-align:center}
.news-featured h2{text-align:left;font-size:clamp(1.4rem,2.5vw,2rem);margin-bottom:8px}
.news-featured p.lead{color:var(--text-sub);text-align:left;font-size:0.9rem;margin-bottom:24px}
.news-list{display:flex;flex-direction:column;gap:16px}
.news-row{display:flex;gap:18px;padding:20px 22px;border-radius:var(--radius-card);background:var(--glass-bg);border:1px solid var(--glass-border);backdrop-filter:blur(10px);box-shadow:var(--shadow-card);transition:transform .25s,box-shadow .25s,border-color .25s}
.news-row:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(46,230,168,0.3)}
.news-icon{flex-shrink:0;width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,rgba(61,126,255,0.25),rgba(46,230,168,0.15));display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:0.95rem}
.news-body{flex:1;min-width:0}
.news-topline{display:flex;align-items:center;gap:10px;margin-bottom:4px;font-size:0.75rem;color:var(--text-sub)}
.news-cat{display:inline-block;padding:2px 10px;border-radius:6px;background:rgba(46,230,168,0.15);color:var(--accent);font-weight:500}
.news-topline time{font-size:0.75rem}
.news-body h4{font-size:0.98rem;font-weight:600;margin-bottom:4px;line-height:1.45;color:var(--text-main);transition:color .2s}
.news-row:hover .news-body h4{color:var(--accent)}
.news-body p{font-size:0.82rem;color:var(--text-sub);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-empty{grid-column:1/-1;text-align:center;padding:48px 24px;border-radius:var(--radius-card);background:var(--glass-bg);border:1px dashed rgba(255,255,255,0.15);color:var(--text-sub)}
.news-empty i{font-size:1.8rem;opacity:.5;display:block;margin-bottom:10px}
.news-empty p{font-size:0.9rem}

/* ===== 系统要求 ===== */
.requirements-section{background:var(--bg-elev);position:relative}
.req-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.req-card{padding:34px;border-radius:var(--radius-card);background:var(--glass-bg);border:1px solid var(--glass-border);backdrop-filter:blur(12px);box-shadow:var(--shadow-card);transition:transform .3s,box-shadow .3s}
.req-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.req-card h3{display:flex;align-items:center;gap:12px;font-size:1.1rem;margin-bottom:22px;font-weight:600}
.req-card h3 i{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-size:0.9rem}
.req-table{width:100%}
.req-table tr{border-bottom:1px solid rgba(255,255,255,0.06)}
.req-table tr:last-child{border-bottom:0}
.req-table td{padding:12px 4px;font-size:0.88rem}
.req-table td:first-child{color:var(--text-sub);width:120px}
.req-table td:last-child{color:var(--text-main);font-weight:500}

/* ===== 评价墙 ===== */
.reviews-section{background:var(--bg-page);overflow:hidden}
.reviews-scroll{display:flex;gap:20px;overflow-x:auto;padding:20px 4px 28px;scroll-snap-type:x mandatory;scrollbar-width:none}
.reviews-scroll::-webkit-scrollbar{display:none}
.review-card{flex:0 0 280px;scroll-snap-align:start;padding:28px 24px;border-radius:var(--radius-card);background:var(--glass-bg);border:1px solid var(--glass-border);backdrop-filter:blur(10px);box-shadow:var(--shadow-card);transition:transform .3s,border-color .3s}
.review-card:hover{transform:translateY(-4px);border-color:rgba(46,230,168,0.3)}
.review-stars{display:flex;gap:3px;color:var(--warning);font-size:0.82rem;margin-bottom:16px}
.review-placeholder{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}
.ph-line{height:8px;border-radius:4px;background:rgba(255,255,255,0.1)}
.ph-line.w-90{width:90%}.ph-line.w-70{width:70%}.ph-line.w-50{width:50%}
.review-user{display:flex;align-items:center;gap:12px}
.user-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-size:0.78rem;font-weight:600}
.user-tag{font-size:0.82rem;color:var(--text-sub)}

/* ===== FAQ ===== */
.faq-section{background:var(--bg-elev);position:relative}
.faq-list{max-width:780px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{border-radius:16px;background:var(--glass-bg);border:1px solid var(--glass-border);backdrop-filter:blur(8px);overflow:hidden;transition:border-color .3s}
.faq-item.open{border-color:rgba(46,230,168,0.35)}
.faq-question{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;font-size:0.95rem;font-weight:500;color:var(--text-main);min-height:56px;text-align:left;width:100%;transition:color .25s}
.faq-question:hover{color:var(--accent)}
.faq-icon{width:28px;height:28px;border-radius:50%;background:rgba(255,255,255,0.08);display:flex;align-items:center;justify-content:center;font-size:0.75rem;flex-shrink:0;transition:all .35s}
.faq-item.open .faq-icon{transform:rotate(45deg);background:rgba(46,230,168,0.2);color:var(--accent)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-answer-inner{padding:2px 22px 18px;color:var(--text-sub);font-size:0.87rem;line-height:1.7;background:rgba(255,255,255,0.03)}

/* ===== 下载CTA ===== */
.cta-section{background:var(--bg-page);position:relative}
.cta-panel{display:grid;grid-template-columns:1.4fr 0.8fr 1fr;gap:32px;align-items:center;padding:48px 42px;border-radius:24px;background:linear-gradient(135deg,rgba(61,126,255,0.12),rgba(46,230,168,0.08));border:1px solid rgba(61,126,255,0.3);backdrop-filter:blur(14px);box-shadow:0 20px 60px rgba(0,0,0,0.35);position:relative;overflow:hidden}
.cta-panel::before{content:'';position:absolute;top:-50%;right:-20%;width:280px;height:280px;background:radial-gradient(circle,rgba(46,230,168,0.15),transparent 70%)}
.cta-main h3{font-size:1.5rem;font-weight:700;margin-bottom:8px}
.cta-main p{color:var(--text-sub);font-size:0.88rem;margin-bottom:20px;max-width:320px}
.cta-main .btn-primary{height:56px;padding:0 36px}
.cta-alt{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.cta-alt .btn-ghost{height:44px;font-size:0.85rem}
.cta-qr{text-align:center}
.qr-box{width:120px;height:120px;border-radius:16px;background:rgba(255,255,255,0.92);margin:0 auto 10px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.qr-box span{font-size:0.65rem;color:#333;text-align:center;line-height:1.4;padding:10px}
.cta-qr p{font-size:0.75rem;color:var(--text-sub)}

/* ===== 页脚 ===== */
.site-footer{background:#0A0E18;border-top:1px solid rgba(255,255,255,0.05);padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;margin-bottom:36px}
.footer-brand h3{font-size:1.2rem;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:10px}
.footer-brand h3 .brand-mark{width:30px;height:30px;font-size:14px}
.footer-brand p{color:var(--text-sub);font-size:0.85rem;max-width:260px;line-height:1.65}
.footer-col h4{font-size:0.9rem;font-weight:600;margin-bottom:14px;color:var(--text-main)}
.footer-col a{display:block;color:var(--text-sub);font-size:0.84rem;padding:4px 0;transition:color .2s}
.footer-col a:hover{color:var(--accent)}
.footer-col a i{font-size:0.7rem;margin-right:6px;opacity:.7}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.05);padding-top:22px;text-align:center;color:var(--text-sub);font-size:0.78rem}
.footer-bottom a{color:var(--text-sub)}
.footer-bottom a:hover{color:var(--accent)}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .container{padding:0 20px}
  .section{padding-block:64px}
  .hero .container{grid-template-columns:1fr;gap:36px;text-align:center;padding-top:48px}
  .hero-content p.subtitle{margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center}
  .hero-meta{justify-content:center}
  .phone-frame{transform:none}
  .values-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .value-item:nth-child(2),.value-item:nth-child(4){transform:none}
  .news-layout{grid-template-columns:1fr;gap:28px}
  .cta-panel{grid-template-columns:1fr 1fr;padding:36px 28px}
  .cta-qr{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding-block:48px}
  .header-top{padding:0 16px}
  .brand-text{font-size:1rem}
  .brand-mark{width:32px;height:32px;font-size:16px}
  .header-search{display:none}
  .header-download{padding:0 16px;font-size:0.82rem;height:38px}
  .header-download .btn-label{display:none}
  .nav-tabs{padding:0 16px}
  .hero{min-height:auto}
  .hero .container{padding-block:40px}
  .hero-content h1{font-size:2rem}
  .hero-actions{flex-direction:column;align-items:center}
  .hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%;justify-content:center}
  .values-grid{grid-template-columns:1fr;gap:12px}
  .value-item{transform:none;padding:20px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px}
  .req-grid{grid-template-columns:1fr}
  .cta-panel{grid-template-columns:1fr;padding:28px 22px}
  .cta-main .btn-primary{width:100%;justify-content:center}
  .cta-alt{flex-direction:row;flex-wrap:wrap}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .review-card{flex-basis:240px}
  .news-row{padding:16px;gap:12px;flex-direction:column}
  .news-icon{display:none}
}
@media (max-width:520px){
  .brand-text span{display:inline}
  .section-head h2{font-size:1.3rem}
  .footer-bottom{font-size:0.7rem}
  .carousel-nav{width:36px;height:36px;font-size:0.8rem}
}

/* roulang page: category1 */
:root {
  --bg-page: #0B0F1C;
  --bg-elev: #111827;
  --glass-bg: rgba(255,255,255,0.05);
  --glass-border: rgba(255,255,255,0.12);
  --primary: #3D7EFF;
  --primary-deep: #1F4FD8;
  --accent: #2EE6A8;
  --text-main: #F1F5FB;
  --text-sub: #94A3B8;
  --warning: #F5B94A;
  --radius-card: 18px;
  --radius-icon: 12px;
  --shadow-card: 0 10px 30px rgba(0,0,0,0.25);
  --shadow-hover: 0 16px 40px rgba(29,78,216,0.15);
  --container-w: 1200px;
  --font-main: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text-main);
  background-color: var(--bg-page);
  background-image:
    radial-gradient(ellipse at 12% -5%, rgba(46,230,168,0.10), transparent 42%),
    radial-gradient(ellipse at 95% 15%, rgba(61,126,255,0.12), transparent 45%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

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

ul, ol {
  list-style: none;
}

button, input {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  color: inherit;
  outline: none;
}

button:focus-visible, a:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding-block: 88px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(11, 15, 28, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background 0.35s ease, box-shadow 0.35s ease;
}

.site-header.scrolled {
  background: rgba(11, 15, 28, 0.97);
  box-shadow: 0 8px 30px rgba(0,0,0,0.35);
}

.header-top {
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1;
  box-shadow: 0 0 18px rgba(61,126,255,0.45);
}

.brand-text {
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.brand-text span {
  color: var(--accent);
  font-weight: 500;
  margin-left: 2px;
}

.header-search {
  position: relative;
  flex: 1;
  max-width: 420px;
  margin-left: auto;
}

.header-search input {
  width: 100%;
  height: 40px;
  padding: 0 44px 0 18px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text-main);
  font-size: 0.88rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.header-search input::placeholder {
  color: rgba(148,163,184,0.85);
}

.header-search input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(46,230,168,0.18);
}

.header-search i {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-sub);
  font-size: 0.9rem;
  pointer-events: none;
}

.header-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 22px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 0.88rem;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: 0 0 16px rgba(61,126,255,0.4);
  transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
}

.header-download:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
  box-shadow: 0 8px 24px rgba(46,230,168,0.35);
}

.header-download:active {
  transform: translateY(0) scale(0.98);
}

.nav-bar {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 48px;
  display: flex;
  align-items: center;
}

.nav-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  white-space: nowrap;
  width: 100%;
}

.nav-tabs::-webkit-scrollbar {
  display: none;
}

.nav-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--text-sub);
  border: 1px solid transparent;
  transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.nav-tab i {
  font-size: 0.8rem;
  opacity: 0.85;
}

.nav-tab:hover {
  color: var(--text-main);
  background: rgba(255,255,255,0.06);
}

.nav-tab.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(61,126,255,0.28), rgba(46,230,168,0.22));
  border-color: rgba(46,230,168,0.4);
  box-shadow: 0 0 14px rgba(46,230,168,0.15);
}

/* ===== Hero Category ===== */
.hero-category {
  position: relative;
  padding: 110px 0 100px;
  background:
    radial-gradient(ellipse at 15% 0%, rgba(46,230,168,0.16), transparent 48%),
    radial-gradient(ellipse at 90% 15%, rgba(61,126,255,0.20), transparent 50%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.hero-category::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,15,28,0.68) 0%, rgba(11,15,28,0.82) 100%);
  z-index: 0;
}

.hero-category .container {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 48px;
}

.hero-category-content {
  max-width: 680px;
}

.hero-category-content .hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(46,230,168,0.15);
  border: 1px solid rgba(46,230,168,0.3);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 22px;
}

.hero-category-content h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-bottom: 16px;
}

.hero-category-content p {
  font-size: 1.02rem;
  color: var(--text-sub);
  line-height: 1.85;
  max-width: 560px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 50px;
  padding: 0 30px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 0.92rem;
  font-weight: 600;
  box-shadow: 0 0 22px rgba(61,126,255,0.45);
  transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
  box-shadow: 0 10px 30px rgba(46,230,168,0.35);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 50px;
  padding: 0 26px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  font-size: 0.92rem;
  font-weight: 500;
  transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}

.btn-ghost:hover {
  border-color: var(--accent);
  background: rgba(46,230,168,0.08);
  transform: translateY(-2px);
}

.btn-ghost:active {
  transform: translateY(0) scale(0.98);
}

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 36px;
  padding-top: 30px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.hero-stats .stat-item {
  text-align: left;
}

.hero-stats .stat-num {
  font-size: 1.5rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text-main);
}

.hero-stats .stat-label {
  font-size: 0.82rem;
  color: var(--text-sub);
  margin-top: 2px;
}

/* ===== Value Points ===== */
.value-points {
  position: relative;
}

.section-head {
  text-align: center;
  margin-bottom: 54px;
}

.section-head h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.section-head p {
  color: var(--text-sub);
  max-width: 560px;
  margin: 0 auto;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.value-item {
  padding: 28px 22px;
  border-radius: var(--radius-card);
  border: 1px solid transparent;
  background: transparent;
  transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.value-item:hover {
  background: var(--glass-bg);
  border-color: var(--glass-border);
  transform: translateY(-4px);
}

.value-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-icon);
  font-size: 1.15rem;
  margin-bottom: 18px;
  background: rgba(61,126,255,0.14);
  color: var(--primary);
}

.value-item:nth-child(even) .value-icon {
  background: rgba(46,230,168,0.14);
  color: var(--accent);
}

.value-item h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.value-item p {
  color: var(--text-sub);
  font-size: 0.86rem;
  line-height: 1.7;
}

/* ===== Feature Zones ===== */
.feature-zones {
  background: rgba(17,24,39,0.4);
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.tag-filter {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 46px;
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 18px;
  border-radius: 999px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-sub);
  font-size: 0.84rem;
  cursor: pointer;
  transition: all 0.25s ease;
}

.tag-chip:hover {
  color: var(--text-main);
  border-color: var(--accent);
}

.tag-chip.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(61,126,255,0.35), rgba(46,230,168,0.28));
  border-color: rgba(46,230,168,0.45);
  box-shadow: 0 0 14px rgba(46,230,168,0.15);
}

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

.feature-card {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  background: var(--bg-elev);
  box-shadow: var(--shadow-card);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.feature-card .card-media {
  position: relative;
  height: 190px;
  overflow: hidden;
}

.feature-card .card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.feature-card .card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,15,28,0) 35%, rgba(11,15,28,0.72) 100%);
}

.feature-card .card-label {
  position: absolute;
  bottom: 14px;
  left: 16px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(46,230,168,0.18);
  border: 1px solid rgba(46,230,168,0.35);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
}

.feature-card .card-body {
  padding: 20px 18px 22px;
}

.feature-card .card-body h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card .card-body p {
  color: var(--text-sub);
  font-size: 0.85rem;
  line-height: 1.7;
}

/* ===== Scenarios ===== */
.scenarios {
  position: relative;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.scenario-item {
  padding: 34px 28px;
  border-radius: var(--radius-card);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.scenario-item:hover {
  transform: translateY(-4px);
  border-color: rgba(46,230,168,0.4);
  box-shadow: var(--shadow-hover);
}

.scenario-item .scenario-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  font-size: 1.2rem;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(61,126,255,0.25), rgba(46,230,168,0.2));
  color: var(--accent);
}

.scenario-item .scenario-tag {
  display: inline-block;
  font-size: 0.76rem;
  color: var(--accent);
  background: rgba(46,230,168,0.12);
  padding: 3px 10px;
  border-radius: 6px;
  margin-bottom: 14px;
  font-weight: 600;
}

.scenario-item h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.scenario-item p {
  color: var(--text-sub);
  font-size: 0.88rem;
}

/* ===== Flow ===== */
.flow-steps {
  background: rgba(17,24,39,0.4);
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
  position: relative;
}

.flow-grid::before {
  content: "";
  position: absolute;
  top: 40px;
  left: 16%;
  right: 16%;
  height: 1px;
  background: linear-gradient(90deg, rgba(46,230,168,0.4), rgba(61,126,255,0.4));
}

.flow-step {
  position: relative;
  text-align: center;
  padding: 0 20px;
}

.flow-step .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--bg-page);
  border: 2px solid var(--accent);
  font-size: 1.5rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  margin-bottom: 22px;
  box-shadow: 0 0 30px rgba(46,230,168,0.2);
}

.flow-step h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.flow-step p {
  color: var(--text-sub);
  font-size: 0.85rem;
  line-height: 1.7;
}

/* ===== FAQ ===== */
.faq-section {
  position: relative;
}

.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  background: var(--glass-bg);
  margin-bottom: 14px;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.faq-item.open {
  border-color: rgba(46,230,168,0.4);
  background: rgba(46,230,168,0.04);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 18px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  text-align: left;
  cursor: pointer;
}

.faq-question i {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.07);
  font-size: 0.8rem;
  color: var(--text-sub);
  transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
}

.faq-item.open .faq-question i {
  transform: rotate(45deg);
  background: rgba(46,230,168,0.18);
  color: var(--accent);
}

.faq-answer {
  display: none;
  padding: 0 22px 18px;
}

.faq-item.open .faq-answer {
  display: block;
}

.faq-answer p {
  color: var(--text-sub);
  font-size: 0.9rem;
  line-height: 1.8;
  padding-top: 4px;
}

/* ===== CTA Light ===== */
.cta-light {
  padding: 56px 0 80px;
}

.cta-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  padding: 42px 48px;
  border-radius: 24px;
  background: var(--glass-bg);
  border: 1px solid rgba(46,230,168,0.25);
  box-shadow: 0 20px 50px rgba(0,0,0,0.3);
  position: relative;
  overflow: hidden;
}

.cta-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 10% 50%, rgba(46,230,168,0.14), transparent 45%);
  pointer-events: none;
}

.cta-info h2 {
  font-size: 1.45rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.cta-info p {
  color: var(--text-sub);
  font-size: 0.9rem;
}

.cta-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 30px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-weight: 600;
  font-size: 0.92rem;
  box-shadow: 0 0 18px rgba(61,126,255,0.35);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.btn-back:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(46,230,168,0.35);
}

/* ===== Footer ===== */
.site-footer {
  background: #090D16;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
}

.footer-brand h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.footer-brand p {
  color: var(--text-sub);
  font-size: 0.85rem;
  line-height: 1.8;
  max-width: 340px;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-main);
}

.footer-col a {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-sub);
  font-size: 0.87rem;
  margin-bottom: 10px;
  transition: color 0.25s ease, transform 0.25s ease;
}

.footer-col a i {
  font-size: 0.75rem;
  color: var(--accent);
  transition: transform 0.25s ease;
}

.footer-col a:hover {
  color: var(--text-main);
  transform: translateX(3px);
}

.footer-col a:hover i {
  transform: translateX(2px);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p {
  color: rgba(148,163,184,0.8);
  font-size: 0.82rem;
}

.footer-bottom a {
  color: var(--text-sub);
}

.footer-bottom a:hover {
  color: var(--accent);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  section {
    padding-block: 70px;
  }

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

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

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

  .flow-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

@media (max-width: 768px) {
  .header-top {
    gap: 12px;
    padding: 0 16px;
  }

  .nav-bar {
    padding: 0 16px;
  }

  .header-search {
    max-width: 160px;
  }

  .header-search input {
    font-size: 0.8rem;
    padding-left: 14px;
  }

  .btn-label {
    display: none;
  }

  .header-download {
    padding: 0 16px;
  }

  .hero-category {
    padding: 80px 0 70px;
  }

  .hero-category .container {
    flex-direction: column;
    gap: 30px;
  }

  .hero-category-content {
    max-width: 100%;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 20px;
  }

  section {
    padding-block: 60px;
  }

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

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

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

  .flow-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .cta-panel {
    flex-direction: column;
    align-items: flex-start;
    padding: 32px 28px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
    padding-bottom: 30px;
  }

  .container {
    padding: 0 16px;
  }
}

@media (max-width: 520px) {
  .brand-text {
    font-size: 1rem;
  }

  .brand-mark {
    width: 32px;
    height: 32px;
    font-size: 1.1rem;
  }

  .header-search {
    max-width: 110px;
  }

  .header-search input {
    padding: 0 12px;
  }

  .hero-actions {
    width: 100%;
  }

  .hero-actions .btn-primary,
  .hero-actions .btn-ghost {
    flex: 1;
    justify-content: center;
  }

  .tag-filter {
    gap: 8px;
  }

  .tag-chip {
    padding: 6px 14px;
  }

  .faq-question {
    padding: 15px 16px;
    font-size: 0.9rem;
  }
}

/* roulang page: article */
:root {
  --bg-page: #0B0F1C;
  --bg-elev: #111827;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.12);
  --primary: #3D7EFF;
  --primary-deep: #1F4FD8;
  --accent: #2EE6A8;
  --text-main: #F1F5FB;
  --text-sub: #94A3B8;
  --warning: #F5B94A;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 16px 40px rgba(29, 78, 216, 0.15);
  --transition: all 0.25s ease;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  background-color: var(--bg-page);
  background-image: radial-gradient(circle at 15% 10%, rgba(46, 230, 168, 0.08), transparent 40%), radial-gradient(circle at 85% 90%, rgba(61, 126, 255, 0.1), transparent 50%);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
button, input {
  font-family: inherit;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 15, 28, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 24px;
  min-height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-weight: 700;
  font-size: 20px;
  box-shadow: 0 0 18px rgba(61, 126, 255, 0.45);
}
.brand-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.brand-text span {
  color: var(--accent);
}
.header-search {
  display: flex;
  align-items: center;
  flex: 1;
  max-width: 480px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  padding: 0 16px;
  height: 40px;
  transition: var(--transition);
}
.header-search:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(46, 230, 168, 0.15);
}
.header-search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 14px;
}
.header-search input::placeholder {
  color: var(--text-sub);
}
.header-search i {
  color: var(--text-sub);
  font-size: 14px;
}
.header-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 999px;
  box-shadow: 0 0 20px rgba(61, 126, 255, 0.4);
  white-space: nowrap;
  transition: var(--transition);
}
.header-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(46, 230, 168, 0.35);
}
.nav-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.nav-tabs {
  display: flex;
  gap: 8px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 8px 24px;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-tabs::-webkit-scrollbar {
  display: none;
}
.nav-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 999px;
  color: var(--text-sub);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  transition: var(--transition);
}
.nav-tab i {
  font-size: 14px;
}
.nav-tab:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.08);
}
.nav-tab.active {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: 0 0 16px rgba(61, 126, 255, 0.3);
}
.article-hero {
  position: relative;
  padding: 60px 0 40px;
  background: linear-gradient(180deg, rgba(17, 24, 39, 0.5), transparent), url('/assets/images/backpic/back-2.png') center top / cover no-repeat;
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 15, 28, 0.7) 0%, rgba(11, 15, 28, 0.95) 100%);
  pointer-events: none;
}
.article-hero .container {
  position: relative;
  z-index: 2;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-sub);
  margin-bottom: 24px;
}
.breadcrumb a {
  color: var(--text-sub);
  padding: 4px 0;
}
.breadcrumb a:hover {
  color: var(--accent);
}
.breadcrumb-arrow {
  color: rgba(255, 255, 255, 0.3);
}
.breadcrumb .current {
  color: var(--text-main);
  max-width: 420px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.article-title {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 14px;
  color: var(--text-sub);
}
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-meta i {
  color: var(--accent);
  font-size: 13px;
}
.article-main-wrap {
  padding: 40px 0 60px;
}
.article-main {
  max-width: 820px;
  margin: 0 auto;
}
.article-body {
  font-size: 16px;
  line-height: 1.9;
  color: #CBD5E1;
}
.article-body p {
  margin-bottom: 22px;
}
.article-body h2 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--text-main);
  margin: 36px 0 18px;
  padding-left: 14px;
  border-left: 3px solid var(--accent);
}
.article-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main);
  margin: 28px 0 12px;
}
.article-body ul,
.article-body ol {
  margin: 0 0 22px;
  padding-left: 24px;
}
.article-body li {
  margin-bottom: 8px;
}
.article-body blockquote {
  border-left: 3px solid var(--primary);
  background: rgba(61, 126, 255, 0.08);
  padding: 16px 20px;
  border-radius: 0 12px 12px 0;
  margin: 24px 0;
  color: var(--text-main);
}
.article-body img {
  border-radius: var(--radius);
  margin: 24px 0;
  box-shadow: var(--shadow);
}
.article-body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.article-body a:hover {
  color: #5AF7C4;
}
.article-empty {
  text-align: center;
  padding: 100px 20px;
}
.article-empty i {
  font-size: 56px;
  color: var(--text-sub);
  margin-bottom: 24px;
  opacity: 0.5;
}
.article-empty h2 {
  font-size: 1.5rem;
  color: var(--text-main);
  margin-bottom: 12px;
}
.article-empty p {
  color: var(--text-sub);
  margin-bottom: 28px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  padding: 12px 32px;
  border-radius: 999px;
  box-shadow: 0 0 20px rgba(61, 126, 255, 0.4);
  transition: var(--transition);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(46, 230, 168, 0.3);
}
.related-section {
  margin-top: 50px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.related-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.related-header h2 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-main);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.related-card {
  display: block;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.related-card:hover {
  border-color: rgba(46, 230, 168, 0.5);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.related-card img {
  width: 100%;
  height: 170px;
  object-fit: cover;
}
.related-card-info {
  padding: 18px;
}
.related-cat {
  display: inline-block;
  font-size: 12px;
  color: var(--accent);
  background: rgba(46, 230, 168, 0.12);
  padding: 3px 12px;
  border-radius: 6px;
  margin-bottom: 10px;
}
.related-card h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-return {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 22px;
  border-radius: 999px;
  transition: var(--transition);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 14px rgba(46, 230, 168, 0.15);
}
.comment-section {
  margin-top: 48px;
}
.comment-placeholder {
  text-align: center;
  background: var(--glass-bg);
  border: 1px dashed var(--glass-border);
  border-radius: var(--radius);
  padding: 48px 20px;
}
.comment-placeholder i {
  font-size: 40px;
  color: var(--accent);
  margin-bottom: 16px;
  opacity: 0.7;
}
.comment-placeholder h3 {
  font-size: 1.1rem;
  color: var(--text-main);
  margin-bottom: 8px;
}
.comment-placeholder p {
  color: var(--text-sub);
  font-size: 14px;
}
.site-footer {
  background: var(--bg-elev);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 60px 0 24px;
  margin-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand h3 {
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand h3 .brand-mark {
  width: 32px;
  height: 32px;
  font-size: 16px;
}
.footer-brand p {
  color: var(--text-sub);
  font-size: 14px;
  max-width: 360px;
  line-height: 1.7;
}
.footer-col h4 {
  color: var(--text-main);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col a {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-sub);
  font-size: 14px;
  padding: 6px 0;
}
.footer-col a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-col a i {
  font-size: 12px;
  color: var(--accent);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--text-sub);
  gap: 8px;
  flex-wrap: wrap;
}
.footer-bottom a {
  color: var(--text-sub);
}
.footer-bottom a:hover {
  color: var(--accent);
}
@media (max-width: 1024px) {
  .header-search {
    max-width: 320px;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  .header-top {
    padding: 10px 16px;
    flex-wrap: wrap;
    gap: 10px;
  }
  .header-search {
    order: 3;
    max-width: 100%;
    flex-basis: 100%;
  }
  .header-download .btn-label {
    display: none;
  }
  .header-download {
    padding: 10px 14px;
  }
  .nav-tabs {
    padding: 8px 16px;
  }
  .article-hero {
    padding: 40px 0 30px;
  }
  .article-main-wrap {
    padding: 30px 0 40px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .article-title {
    font-size: 1.5rem;
  }
}
@media (max-width: 520px) {
  .brand-text {
    font-size: 17px;
  }
  .brand-text span {
    display: none;
  }
  .article-meta {
    gap: 10px;
    font-size: 13px;
  }
  .related-card img {
    height: 140px;
  }
}

/* roulang page: category2 */
:root {
  --bg-page: #0B0F1C;
  --bg-elev: #111827;
  --glass-bg: rgba(255,255,255,0.05);
  --glass-border: rgba(255,255,255,0.12);
  --primary: #3D7EFF;
  --primary-deep: #1F4FD8;
  --accent: #2EE6A8;
  --text-main: #F1F5FB;
  --text-sub: #94A3B8;
  --warning: #F5B94A;
  --radius-card: 18px;
  --radius-btn: 999px;
  --radius-icon: 12px;
  --shadow-card: 0 10px 30px rgba(0,0,0,0.25);
  --shadow-hover: 0 16px 40px rgba(29,78,216,0.18);
  --spacer-desktop: 90px;
  --spacer-mobile: 56px;
  --container-max: 1200px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  background: var(--bg-page);
  color: var(--text-main);
  line-height: 1.75;
  font-size: .95rem;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color .25s ease; }
img { display: block; max-width: 100%; height: auto; }
button, input { font: inherit; color: inherit; border: none; background: none; }
ul, ol { list-style: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
@media (max-width: 768px) {
  .container { padding-left: 16px; padding-right: 16px; }
}

/* ===== 双层导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11,15,28,.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,.06);
  transition: background .3s ease;
}
.site-header.scrolled { background: rgba(11,15,28,.92); }
.header-top {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  height: 64px;
  padding: 0 24px;
}
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -.02em;
  box-shadow: 0 0 16px rgba(61,126,255,.4);
}
.brand-text { font-size: 1.2rem; font-weight: 700; letter-spacing: -.01em; }
.brand-text span { color: var(--accent); font-weight: 500; }
.header-search {
  position: relative;
  flex: 1;
  max-width: 420px;
  margin: 0 auto;
}
.header-search input {
  width: 100%;
  height: 40px;
  padding: 0 18px 0 42px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-btn);
  color: var(--text-main);
  font-size: .875rem;
  transition: border-color .25s, box-shadow .25s;
}
.header-search input::placeholder { color: rgba(148,163,184,.7); }
.header-search input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(46,230,168,.15);
}
.header-search i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-sub);
  font-size: .875rem;
  pointer-events: none;
}
.header-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 22px;
  border-radius: var(--radius-btn);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: .875rem;
  font-weight: 600;
  box-shadow: 0 0 18px rgba(61,126,255,.4);
  transition: transform .25s, box-shadow .25s, filter .25s;
  flex-shrink: 0;
}
.header-download:hover { transform: translateY(-2px); box-shadow: 0 0 26px rgba(46,230,168,.35); filter: brightness(1.08); }
.header-download:active { transform: translateY(0) scale(.97); }
.nav-bar {
  border-top: 1px solid rgba(255,255,255,.04);
  background: rgba(17,24,39,.35);
}
.nav-tabs {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 6px;
  height: 48px;
  padding: 0 24px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.nav-tabs::-webkit-scrollbar { display: none; }
.nav-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 18px;
  border-radius: var(--radius-btn);
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-sub);
  white-space: nowrap;
  transition: color .25s, background .25s, box-shadow .25s;
}
.nav-tab i { font-size: .8125rem; }
.nav-tab:hover { color: var(--text-main); background: rgba(255,255,255,.06); }
.nav-tab.active {
  background: linear-gradient(135deg, rgba(61,126,255,.25), rgba(46,230,168,.18));
  color: #fff;
  box-shadow: inset 0 0 0 1px rgba(46,230,168,.22), 0 0 14px rgba(46,230,168,.12);
}

/* ===== 面包屑 ===== */
.breadcrumb { background: rgba(17,24,39,.35); border-bottom: 1px solid rgba(255,255,255,.04); }
.breadcrumb .container { display: flex; align-items: center; gap: 10px; height: 46px; font-size: .8125rem; color: var(--text-sub); }
.breadcrumb a { color: var(--text-sub); transition: color .25s; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: rgba(148,163,184,.4); }
.breadcrumb .current { color: var(--text-main); }

/* ===== 分类 Hero ===== */
.cat-hero {
  position: relative;
  padding: 72px 0 56px;
  background:
    radial-gradient(640px 320px at 20% 20%, rgba(46,230,168,.14), transparent 70%),
    radial-gradient(520px 300px at 80% 10%, rgba(61,126,255,.18), transparent 70%),
    linear-gradient(rgba(11,15,28,.8), rgba(11,15,28,.92)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.cat-hero .container { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }
.cat-hero .badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  background: rgba(46,230,168,.14);
  border: 1px solid rgba(46,230,168,.25);
  color: var(--accent);
  font-size: .75rem;
  font-weight: 600;
  border-radius: 6px;
  letter-spacing: .02em;
}
.cat-hero h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -.01em;
  line-height: 1.15;
}
.cat-hero .subtitle { max-width: 620px; color: var(--text-sub); font-size: .95rem; line-height: 1.7; }

/* ===== 通用板块 ===== */
section { padding: var(--spacer-desktop) 0; }
.section-head { margin-bottom: 36px; }
.section-head h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 600;
  letter-spacing: -.01em;
  margin-bottom: 8px;
}
.section-head p { color: var(--text-sub); font-size: .875rem; max-width: 560px; }

/* ===== 筛选胶囊 ===== */
.filter-pills { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; }
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  border-radius: var(--radius-btn);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-sub);
  font-size: .8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all .25s ease;
}
.pill:hover { color: var(--text-main); border-color: rgba(46,230,168,.4); transform: translateY(-1px); }
.pill.active {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 0 16px rgba(61,126,255,.35);
}

/* ===== 版本卡片网格 ===== */
.version-section { background: linear-gradient(180deg, var(--bg-page), rgba(17,24,39,.4) 100%); }
.version-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.app-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  display: flex;
  flex-direction: column;
}
.app-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(46,230,168,.3);
}
.app-card-media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; }
.app-card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.app-card:hover .app-card-media img { transform: scale(1.04); }
.app-card-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(11,15,28,.55));
}
.app-card-media .badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  background: rgba(11,15,28,.75);
  border: 1px solid rgba(46,230,168,.3);
  color: var(--accent);
  font-size: .6875rem;
  font-weight: 700;
  border-radius: 6px;
  letter-spacing: .04em;
  backdrop-filter: blur(6px);
}
.app-card-body { padding: 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.app-card-body h3 { font-size: 1.05rem; font-weight: 600; }
.app-card-body p { color: var(--text-sub); font-size: .8125rem; line-height: 1.6; }
.app-card-body .meta { color: rgba(148,163,184,.7); font-size: .75rem; margin-top: auto; }
.app-card-body .btn {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 38px;
  padding: 0 20px;
  border-radius: var(--radius-btn);
  font-size: .8125rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 0 12px rgba(61,126,255,.3);
  transition: transform .25s, box-shadow .25s, filter .25s;
}
.app-card-body .btn:hover { transform: translateY(-2px); box-shadow: 0 0 20px rgba(46,230,168,.25); filter: brightness(1.06); }
.app-card-body .btn:active { transform: translateY(0) scale(.97); }

/* ===== 系统要求 ===== */
.req-section { background: rgba(17,24,39,.25); border-top: 1px solid rgba(255,255,255,.04); border-bottom: 1px solid rgba(255,255,255,.04); }
.req-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; max-width: 860px; }
.req-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 28px 30px;
  backdrop-filter: blur(10px);
  transition: border-color .3s ease, transform .3s ease;
}
.req-card:hover { border-color: rgba(61,126,255,.35); transform: translateY(-3px); }
.req-card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 18px;
}
.req-card h3 i { color: var(--accent); font-size: 1.1rem; }
.req-card ul { display: flex; flex-direction: column; gap: 10px; }
.req-card li { display: flex; align-items: flex-start; gap: 9px; font-size: .8125rem; color: var(--text-sub); line-height: 1.55; }
.req-card li i { color: var(--accent); font-size: .75rem; margin-top: 5px; }

/* ===== 下载流程 ===== */
.process-section { background: var(--bg-page); }
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: step;
}
.step {
  position: relative;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 28px 22px 24px;
  text-align: center;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: 16px;
  right: 18px;
  font-size: 1.5rem;
  font-weight: 800;
  color: rgba(61,126,255,.35);
  line-height: 1;
}
.step:hover { transform: translateY(-4px); border-color: rgba(46,230,168,.3); box-shadow: var(--shadow-hover); }
.step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border-radius: var(--radius-icon);
  background: linear-gradient(135deg, rgba(61,126,255,.2), rgba(46,230,168,.16));
  border: 1px solid rgba(46,230,168,.2);
  color: var(--accent);
  font-size: 1.25rem;
  margin-bottom: 14px;
  transition: box-shadow .3s;
}
.step:hover .step-icon { box-shadow: 0 0 18px rgba(46,230,168,.2); }
.step h3 { font-size: .9375rem; font-weight: 600; margin-bottom: 8px; }
.step p { color: var(--text-sub); font-size: .7813rem; line-height: 1.6; }

/* ===== FAQ ===== */
.faq-section { background: rgba(17,24,39,.25); border-top: 1px solid rgba(255,255,255,.04); border-bottom: 1px solid rgba(255,255,255,.04); }
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color .3s ease, box-shadow .3s ease;
}
.faq-item.active { border-color: rgba(46,230,168,.3); box-shadow: 0 0 20px rgba(46,230,168,.08); }
.faq-question { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 22px; cursor: pointer; user-select: none; }
.faq-question h3 { font-size: .9375rem; font-weight: 600; line-height: 1.5; transition: color .25s; }
.faq-item.active .faq-question h3 { color: var(--accent); }
.faq-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--glass-border);
  color: var(--text-sub);
  font-size: .8125rem;
  flex-shrink: 0;
  transition: transform .35s ease, background .3s, color .3s;
}
.faq-item.active .faq-toggle { transform: rotate(45deg); background: rgba(46,230,168,.15); color: var(--accent); border-color: rgba(46,230,168,.3); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-answer-inner { padding: 0 22px 18px; color: var(--text-sub); font-size: .875rem; line-height: 1.7; border-top: 1px solid rgba(255,255,255,.04); margin-top: 0; padding-top: 16px; }

/* ===== CTA ===== */
.cta-section { background: var(--bg-page); }
.cta-box {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 56px 40px;
  text-align: center;
  background:
    radial-gradient(480px 220px at 30% 30%, rgba(61,126,255,.18), transparent 70%),
    radial-gradient(400px 200px at 70% 70%, rgba(46,230,168,.12), transparent 70%),
    var(--glass-bg);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 26px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 0 50px rgba(0,0,0,.3), inset 0 0 30px rgba(255,255,255,.02);
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(46,230,168,.18), transparent 70%);
  pointer-events: none;
}
.cta-box h2 { font-size: clamp(1.4rem, 2.5vw, 2rem); font-weight: 600; }
.cta-box p { color: var(--text-sub); font-size: .875rem; max-width: 520px; }
.cta-box .btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 52px;
  padding: 0 34px;
  border-radius: var(--radius-btn);
  font-size: .9375rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 0 24px rgba(61,126,255,.45);
  transition: transform .25s, box-shadow .25s, filter .25s;
}
.cta-box .btn:hover { transform: translateY(-3px); box-shadow: 0 0 34px rgba(46,230,168,.35); filter: brightness(1.06); }
.cta-box .btn:active { transform: translateY(0) scale(.98); }

/* ===== 页脚 ===== */
.site-footer { background: #080b13; border-top: 1px solid rgba(255,255,255,.05); padding: 60px 0 32px; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand h3 { display: flex; align-items: center; gap: 10px; font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; }
.footer-brand h3 .brand-mark { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; border-radius: 9px; background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; font-size: 1.1rem; font-weight: 800; }
.footer-brand p { color: var(--text-sub); font-size: .8125rem; line-height: 1.7; max-width: 360px; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h4 { font-size: .875rem; font-weight: 600; color: var(--text-main); margin-bottom: 8px; }
.footer-col a { display: inline-flex; align-items: center; gap: 8px; color: var(--text-sub); font-size: .8125rem; transition: color .25s, transform .25s; }
.footer-col a i { font-size: .6875rem; color: rgba(46,230,168,.6); transition: transform .25s; }
.footer-col a:hover { color: var(--accent); transform: translateX(3px); }
.footer-col a:hover i { transform: translateX(2px); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.05); padding-top: 24px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; }
.footer-bottom p { color: rgba(148,163,184,.6); font-size: .75rem; }
.footer-bottom a { color: rgba(148,163,184,.6); transition: color .25s; }
.footer-bottom a:hover { color: var(--accent); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  section { padding: 64px 0; }
  .version-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .header-top { padding: 0 16px; height: 58px; }
  .brand-text { font-size: 1.05rem; }
  .header-search { max-width: 180px; }
  .header-search input { padding-left: 38px; font-size: .8125rem; }
  .header-download { width: 42px; padding: 0; justify-content: center; }
  .header-download .btn-label { display: none; }
  .nav-tabs { padding: 0 12px; gap: 4px; }
  .nav-tab { padding: 6px 13px; font-size: .8125rem; }
  .cat-hero { padding: 52px 0 40px; }
  .version-grid { grid-template-columns: 1fr; gap: 16px; }
  .filter-pills { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch; padding-bottom: 2px; }
  .filter-pills::-webkit-scrollbar { display: none; }
  .pill { flex-shrink: 0; }
  .req-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; gap: 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-box { padding: 44px 20px; }
}
@media (max-width: 520px) {
  .version-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .section-head p { font-size: .8125rem; }
  .cat-hero .subtitle { font-size: .875rem; }
  .app-card-body { padding: 16px; }
}