/* roulang page: index */
:root{
  --primary:#7B59FF; --primary-hover:#6A45F2; --primary-light:rgba(123,89,255,0.08);
  --accent:#D7FF3F; --accent-hover:#C4F030; --pink:#FF5C85;
  --dark:#14151F; --dark-2:#171826; --dark-3:#232643;
  --bg:#F5F6FA; --card:#FFFFFF;
  --text:#1E2130; --text-2:#5C607A; --text-3:#8C8FA9;
  --border:#E6E8F0;
  --radius-lg:16px; --radius-md:10px; --radius-sm:6px;
  --shadow:0 2px 8px rgba(20,21,31,0.04);
  --shadow-hover:0 8px 24px rgba(123,89,255,0.12);
  --transition:200ms cubic-bezier(0.2,0,0,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC','Helvetica Neue',Arial,sans-serif;background:var(--bg);color:var(--text);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;}
a{text-decoration:none;color:inherit;transition:color 200ms cubic-bezier(0.2,0,0,1);}
img{max-width:100%;display:block;}
button,input,textarea{font:inherit;border:none;outline:none;}
ul,ol{list-style:none;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(123,89,255,0.5);outline-offset:2px;border-radius:4px;}
.container{max-width:1320px;margin:0 auto;padding:0 32px;}
section{padding:96px 0;}
.section-h2{display:flex;align-items:center;font-size:32px;font-weight:800;letter-spacing:-0.5px;color:var(--text);line-height:1.25;margin-bottom:48px;}
.section-h2::before{content:'';display:inline-block;width:4px;height:28px;border-radius:2px;background:var(--primary);margin-right:14px;flex-shrink:0;}
.section-h2 .more-link{margin-left:auto;font-size:15px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px;letter-spacing:0;}
.section-h2 .more-link:hover{text-decoration:underline;}

.btn{display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 28px;border-radius:var(--radius-md);font-weight:700;font-size:15px;cursor:pointer;transition:all var(--transition);border:1.5px solid transparent;gap:8px;white-space:nowrap;}
.btn--accent{background:var(--accent);color:#111;border-color:var(--accent);}
.btn--accent:hover{background:var(--accent-hover);border-color:var(--accent-hover);transform:translateY(-2px);box-shadow:0 8px 24px rgba(215,255,63,0.3);}
.btn--primary{background:var(--primary);color:#fff;border-color:var(--primary);}
.btn--primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);transform:translateY(-2px);box-shadow:0 8px 24px rgba(123,89,255,0.3);}
.btn--ghost{background:transparent;border-color:rgba(255,255,255,0.6);color:#fff;}
.btn--ghost:hover{background:rgba(255,255,255,0.1);transform:translateY(-2px);}
.btn--outline{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn--outline:hover{background:var(--primary-light);transform:translateY(-2px);box-shadow:0 4px 16px rgba(123,89,255,0.16);}
.btn--lg{height:54px;padding:0 36px;font-size:16px;}
.btn--sm{height:36px;padding:0 18px;font-size:14px;border-radius:8px;}
.btn:active{transform:translateY(0);box-shadow:none;}

.tag{display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:var(--radius-sm);font-size:12px;font-weight:600;line-height:1;}
.tag--primary{background:var(--primary-light);color:var(--primary);}
.tag--accent{background:rgba(215,255,63,0.18);color:#5A7A00;}
.tag--pink{background:rgba(255,92,133,0.12);color:var(--pink);}
.tag--dark{background:var(--dark);color:#fff;}

.sidebar{position:fixed;left:0;top:0;bottom:0;width:220px;background:var(--dark);z-index:1000;display:flex;flex-direction:column;overflow-y:auto;}
.sidebar__brand{display:flex;flex-direction:column;justify-content:center;height:80px;padding:0 24px;border-bottom:1px solid rgba(255,255,255,0.08);flex-shrink:0;}
.brand-mark{font-size:22px;font-weight:800;color:#fff;letter-spacing:-0.5px;line-height:1.2;}
.brand-mark .brand-neon{color:var(--accent);}
.brand-sub{font-size:12px;color:#9BA0B5;letter-spacing:1px;margin-top:2px;}
.sidebar__nav{flex:1;padding:16px 0;}
.sidebar__nav a{display:flex;align-items:center;height:44px;padding:0 20px;color:#9BA0B5;font-size:15px;font-weight:500;transition:all var(--transition);border-left:3px solid transparent;}
.sidebar__nav a i{width:24px;font-size:16px;margin-right:10px;text-align:center;opacity:0.8;}
.sidebar__nav a:hover{color:#fff;background:rgba(255,255,255,0.06);}
.sidebar__nav a.active{color:var(--primary);border-left-color:var(--accent);background:rgba(255,255,255,0.03);}
.sidebar__nav a.active i{color:var(--primary);opacity:1;}
.sidebar__footer{padding:20px;border-top:1px solid rgba(255,255,255,0.08);flex-shrink:0;}
.sidebar__footer .btn{width:100%;}

.mobile-header{display:none;position:fixed;top:0;left:0;right:0;height:64px;background:var(--dark);z-index:1200;align-items:center;justify-content:space-between;padding:0 20px;box-shadow:0 2px 16px rgba(0,0,0,0.2);}
.mobile-brand{font-size:20px;font-weight:800;color:#fff;display:flex;flex-direction:column;line-height:1.1;}
.mobile-brand .brand-neon{color:var(--accent);}
.mobile-brand small{font-size:10px;color:#9BA0B5;font-weight:400;letter-spacing:1px;}
.hamburger{width:40px;height:40px;background:transparent;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;border-radius:8px;transition:background 200ms;}
.hamburger:hover{background:rgba(255,255,255,0.06);}
.hamburger span{width:20px;height:2px;border-radius:2px;background:#fff;transition:all 300ms;}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.active span:nth-child(2){opacity:0;}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.drawer{position:fixed;top:64px;left:0;bottom:0;width:280px;background:var(--dark);z-index:1190;transform:translateX(-100%);transition:transform 300ms cubic-bezier(0.2,0,0,1);display:flex;flex-direction:column;padding:20px 0;}
.drawer.open{transform:translateX(0);}
.drawer-overlay{position:fixed;top:64px;left:0;right:0;bottom:0;background:rgba(0,0,0,0.5);z-index:1180;opacity:0;visibility:hidden;transition:opacity 300ms;}
.drawer-overlay.active{opacity:1;visibility:visible;}
.drawer__nav{flex:1;}
.drawer__nav a{display:flex;align-items:center;height:48px;padding:0 24px;color:#9BA0B5;font-size:15px;font-weight:500;border-bottom:1px solid rgba(255,255,255,0.06);}
.drawer__nav a i{width:24px;margin-right:10px;}
.drawer__nav a.active{color:var(--primary);border-left:3px solid var(--accent);background:rgba(255,255,255,0.03);}
.drawer__footer{padding:20px 24px;}
.drawer__footer .btn{width:100%;}

.main{margin-left:220px;min-height:100vh;}

.hero{background:linear-gradient(135deg,var(--dark-2) 0%,#241E4A 100%);position:relative;color:#fff;padding:96px 0;overflow:hidden;}
.hero::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center center / cover no-repeat;opacity:0.4;}
.hero::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(20,21,31,0.72) 0%,rgba(23,24,38,0.3) 100%);}
.hero__grid{display:grid;grid-template-columns:1.1fr 0.9fr;gap:56px;align-items:center;position:relative;z-index:2;}
.hero__tag{display:inline-flex;align-items:center;gap:6px;background:var(--primary);color:#fff;padding:4px 14px;border-radius:20px;font-size:13px;font-weight:600;margin-bottom:24px;}
.hero__tag::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--accent);}
.hero h1{font-size:46px;line-height:1.15;font-weight:800;letter-spacing:-0.5px;margin-bottom:20px;}
.hero h1 .brand-neon{color:var(--accent);}
.hero__sub{font-size:17px;line-height:1.7;color:#C9CBE7;max-width:520px;margin-bottom:32px;}
.hero__actions{display:flex;gap:16px;flex-wrap:wrap;}
.hero__visual{position:relative;}
.hero__visual::before{content:'';position:absolute;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(123,89,255,0.45),transparent 70%);top:-40px;right:-20px;}
.hero__visual::after{content:'';position:absolute;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,rgba(215,255,63,0.3),transparent 70%);bottom:-30px;left:-30px;}
.hero__visual-img{border-radius:var(--radius-lg);box-shadow:0 24px 80px rgba(0,0,0,0.35);border:1px solid rgba(255,255,255,0.12);position:relative;z-index:2;}
.hero__visual-card{position:absolute;bottom:24px;left:-24px;background:rgba(255,255,255,0.96);backdrop-filter:blur(8px);border-radius:14px;padding:14px 18px;display:flex;align-items:center;gap:12px;box-shadow:0 12px 40px rgba(0,0,0,0.2);z-index:3;min-width:200px;}
.hero__visual-card .dot{width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(215,255,63,0.25);}
.hero__visual-card p{font-size:12px;color:var(--text-2);margin:0;}
.hero__visual-card strong{display:block;font-size:16px;color:var(--text);font-weight:800;margin-top:2px;}

.stats{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:40px 0;}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat{text-align:center;padding:8px 0;}
.stat strong{display:block;font-size:32px;font-weight:800;color:var(--primary);letter-spacing:-0.5px;line-height:1.2;}
.stat span{display:block;font-size:13px;color:var(--text-3);margin-top:6px;}

.features{background:var(--bg);}
.features__grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.feature-card{background:var(--card);border-radius:var(--radius-lg);padding:28px;border:1px solid transparent;box-shadow:var(--shadow);transition:all var(--transition);position:relative;overflow:hidden;display:flex;flex-direction:column;}
.feature-card::after{content:'\f061';font-family:'Font Awesome 6 Free';font-weight:900;position:absolute;right:24px;bottom:24px;font-size:18px;color:var(--border);transition:all var(--transition);}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(123,89,255,0.12);}
.feature-card:hover::after{color:var(--primary);right:20px;}
.feature-card__icon{width:48px;height:48px;border-radius:12px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:18px;transition:all var(--transition);}
.feature-card:hover .feature-card__icon{background:var(--primary);color:#fff;}
.feature-card h3{font-size:20px;font-weight:700;margin-bottom:10px;color:var(--text);letter-spacing:-0.3px;}
.feature-card p{font-size:14px;color:var(--text-2);line-height:1.7;flex:1;max-width:92%;}

.scenarios{background:#fff;}
.scenario{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:64px;}
.scenario:last-child{margin-bottom:0;}
.scenario--reverse .scenario__media{order:2;}
.scenario--reverse .scenario__content{order:1;}
.scenario__media{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);}
.scenario__media img{width:100%;height:260px;object-fit:cover;transition:transform 500ms;}
.scenario__media:hover img{transform:scale(1.04);}
.scenario__tag{display:inline-flex;background:var(--pink);color:#fff;padding:3px 12px;border-radius:var(--radius-sm);font-size:12px;font-weight:600;margin-bottom:14px;}
.scenario__content h3{font-size:24px;font-weight:800;letter-spacing:-0.3px;color:var(--text);margin-bottom:14px;}
.scenario__content p{font-size:14px;color:var(--text-2);line-height:1.8;margin-bottom:10px;}
.scenario__link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;margin-top:8px;}
.scenario__link:hover{text-decoration:underline;}

.cases{background:var(--bg);overflow:hidden;}
.cases__header{display:flex;align-items:center;margin-bottom:48px;}
.cases__controls{display:flex;gap:10px;margin-left:auto;}
.cases__control{width:40px;height:40px;border-radius:50%;background:#fff;border:1px solid var(--border);color:var(--text-2);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition);}
.cases__control:hover{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 4px 16px rgba(123,89,255,0.25);}
.cases__scroll{display:flex;gap:24px;overflow-x:auto;scroll-behavior:smooth;padding-bottom:8px;scrollbar-width:thin;scrollbar-color:var(--border) transparent;}
.cases__scroll::-webkit-scrollbar{height:6px;}
.cases__scroll::-webkit-scrollbar-thumb{background:var(--border);border-radius:6px;}
.cases__scroll::-webkit-scrollbar-track{background:transparent;}
.case-card{flex:0 0 320px;background:#fff;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);transition:all var(--transition);}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.case-card__cover{height:180px;overflow:hidden;position:relative;}
.case-card__cover img{width:100%;height:100%;object-fit:cover;transition:transform 500ms;}
.case-card:hover .case-card__cover img{transform:scale(1.05);}
.case-card__body{padding:20px;}
.case-card__body h3{font-size:18px;font-weight:700;color:var(--text);margin-bottom:8px;}
.case-card__body .tag{margin-bottom:8px;}
.case-card__body p{font-size:13px;color:var(--text-2);line-height:1.6;margin-top:8px;}

.pricing{background:#fff;}
.pricing__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.pricing-card{background:var(--card);border-radius:var(--radius-lg);padding:32px;border:2px solid var(--border);box-shadow:var(--shadow);display:flex;flex-direction:column;position:relative;transition:all var(--transition);}
.pricing-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.pricing-card--featured{background:var(--dark-2);border-color:var(--primary);box-shadow:0 16px 48px rgba(23,24,38,0.3);}
.pricing-card__badge{position:absolute;top:-12px;right:24px;background:var(--accent);color:#111;font-size:12px;font-weight:700;padding:4px 12px;border-radius:20px;letter-spacing:0.5px;}
.pricing-card__name{font-size:16px;font-weight:700;color:var(--text-2);margin-bottom:8px;}
.pricing-card--featured .pricing-card__name{color:#C9CBE7;}
.pricing-card__price{font-size:36px;font-weight:800;color:var(--text);letter-spacing:-1px;margin-bottom:20px;}
.pricing-card__price span{font-size:14px;font-weight:400;color:var(--text-3);}
.pricing-card--featured .pricing-card__price{color:#fff;}
.pricing-card ul{flex:1;margin-bottom:24px;}
.pricing-card ul li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-2);line-height:1.6;margin-bottom:12px;}
.pricing-card--featured ul li{color:#C9CBE7;}
.pricing-card ul li::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--primary);margin-top:8px;flex-shrink:0;}
.pricing-card--featured ul li::before{background:var(--accent);}
.pricing-card .btn{width:100%;}

.news{background:var(--bg);}
.news__list{border-top:1px solid var(--border);}
.news-item{display:block;padding:20px 0;border-bottom:1px solid var(--border);transition:background 200ms;border-radius:0;}
.news-item:hover{background:rgba(123,89,255,0.03);padding-left:8px;}
.news-item__meta{display:flex;align-items:center;gap:12px;margin-bottom:6px;}
.news-item__meta .tag{flex-shrink:0;}
.news-item__date{font-size:13px;color:var(--text-3);}
.news-item h3{font-size:18px;font-weight:700;color:var(--text);margin-bottom:6px;transition:color 200ms;}
.news-item:hover h3{color:var(--primary);}
.news-item p{font-size:14px;color:var(--text-2);line-height:1.6;max-height:44px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-bottom:6px;}
.news-item__link{font-size:13px;color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:4px;}
.news-item__link i{font-size:12px;transition:transform 200ms;}
.news-item:hover .news-item__link i{transform:translateX(4px);}
.news-empty{text-align:center;padding:48px 0;color:var(--text-3);}
.news-empty i{font-size:36px;margin-bottom:12px;display:block;}

.faq{background:#fff;}
.faq__list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:var(--card);border-radius:var(--radius-lg);box-shadow:var(--shadow);overflow:hidden;transition:box-shadow 200ms;}
.faq-item.open{box-shadow:var(--shadow-hover);}
.faq-item__question{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;cursor:pointer;font-size:16px;font-weight:600;color:var(--text);background:transparent;width:100%;text-align:left;}
.faq-item__icon{width:20px;height:20px;border-radius:50%;border:1.5px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--text-3);transition:all 300ms;flex-shrink:0;}
.faq-item.open .faq-item__icon{transform:rotate(45deg);border-color:var(--primary);color:var(--primary);}
.faq-item__answer{max-height:0;overflow:hidden;transition:max-height 400ms cubic-bezier(0.2,0,0,1);}
.faq-item__answer-inner{padding:0 24px 20px;font-size:14px;color:var(--text-2);line-height:1.7;}

.cta{background:linear-gradient(135deg,var(--primary) 0%,#4B32C8 100%);position:relative;overflow:hidden;padding:80px 0;}
.cta::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center center / cover no-repeat;opacity:0.12;}
.cta__inner{position:relative;z-index:2;text-align:center;max-width:640px;margin:0 auto;}
.cta__inner h2{font-size:34px;font-weight:800;color:#fff;letter-spacing:-0.5px;margin-bottom:16px;}
.cta__inner p{font-size:16px;color:rgba(255,255,255,0.85);margin-bottom:32px;}
.cta__actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;}
.cta__form{display:flex;gap:10px;max-width:440px;margin:28px auto 0;flex-wrap:wrap;}
.cta__form input{flex:1;min-width:200px;height:48px;background:rgba(255,255,255,0.16);border-radius:var(--radius-md);padding:0 18px;font-size:15px;color:#fff;border:1px solid transparent;transition:all 200ms;}
.cta__form input::placeholder{color:rgba(255,255,255,0.6);}
.cta__form input:focus{background:rgba(255,255,255,0.24);border-color:rgba(255,255,255,0.5);outline:none;}
.cta__form .btn{background:#fff;color:var(--primary);border-color:#fff;}
.cta__form .btn:hover{background:var(--accent);color:#111;border-color:var(--accent);transform:translateY(-2px);}

.footer{background:var(--dark);color:#9BA0B5;padding:64px 0 32px;}
.footer__grid{display:grid;grid-template-columns:1.4fr 0.8fr 0.8fr 1fr;gap:40px;max-width:1320px;margin:0 auto;padding:0 32px;}
.footer__brand .brand-mark{font-size:20px;margin-bottom:12px;}
.footer__brand p{font-size:14px;line-height:1.7;color:#9BA0B5;max-width:280px;}
.footer__col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer__col ul li{margin-bottom:10px;}
.footer__col ul li a{font-size:14px;color:#9BA0B5;transition:color 200ms;}
.footer__col ul li a:hover{color:var(--primary);}
.footer__col ul li i{width:18px;margin-right:6px;opacity:0.7;}
.footer__bottom{margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,0.1);text-align:center;font-size:12px;color:rgba(255,255,255,0.4);max-width:1320px;margin-left:auto;margin-right:auto;padding-left:32px;padding-right:32px;}

@media (max-width:1199px){
  .main{margin-left:220px;}
  .container{padding-left:24px;padding-right:24px;}
  .hero h1{font-size:38px;}
  .hero__grid{gap:40px;}
  .feature-card p{max-width:100%;}
}

@media (max-width:991px){
  .sidebar{display:none;}
  .mobile-header{display:flex;}
  .main{margin-left:0;padding-top:64px;}
  .hero{padding:64px 0;}
  .hero h1{font-size:32px;}
  .hero__grid{grid-template-columns:1fr;gap:40px;}
  .hero__sub{font-size:15px;max-width:100%;}
  .hero__visual{max-width:480px;}
  .hero__visual-card{left:12px;}
  .stats__grid{grid-template-columns:repeat(2,1fr);gap:16px;}
  .features__grid{grid-template-columns:1fr 1fr;}
  .scenario{grid-template-columns:1fr;gap:32px;margin-bottom:48px;}
  .scenario--reverse .scenario__media{order:0;}
  .scenario--reverse .scenario__content{order:0;}
  .scenario__media img{height:220px;}
  .pricing__grid{grid-template-columns:1fr;max-width:480px;margin:0 auto;}
  .pricing-card--featured{order:-1;}
  .footer__grid{grid-template-columns:1fr 1fr;}
  section{padding:64px 0;}
  .section-h2{font-size:26px;margin-bottom:32px;}
}

@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px;}
  section{padding:48px 0;}
  .hero h1{font-size:28px;}
  .hero__sub{font-size:14px;}
  .hero__actions{flex-direction:column;}
  .hero__actions .btn{width:100%;}
  .stats__grid{grid-template-columns:1fr 1fr;}
  .stat strong{font-size:26px;}
  .features__grid{grid-template-columns:1fr;}
  .feature-card{padding:22px;}
  .feature-card h3{font-size:18px;}
  .scenario__content h3{font-size:20px;}
  .case-card{flex-basis:280px;}
  .news-item h3{font-size:16px;}
  .faq-item__question{font-size:15px;padding:16px 18px;}
  .faq-item__answer-inner{font-size:13px;}
  .cta__inner h2{font-size:26px;}
  .cta__actions{flex-direction:column;}
  .cta__actions .btn{width:100%;}
  .cta__form{flex-direction:column;}
  .cta__form input{width:100%;min-width:0;}
  .cta__form .btn{width:100%;}
  .footer__grid{grid-template-columns:1fr;gap:32px;padding-left:20px;padding-right:20px;}
  .footer__brand p{max-width:100%;}
  .footer__bottom{font-size:12px;padding-left:20px;padding-right:20px;}
  .section-h2{flex-direction:column;align-items:flex-start;gap:12px;}
  .section-h2 .more-link{margin-left:0;}
}

/* roulang page: category1 */
:root {
  --primary: #7B59FF;
  --primary-hover: #6A45F2;
  --primary-light: rgba(123, 89, 255, 0.08);
  --neon: #D7FF3F;
  --neon-hover: #C4F030;
  --pink: #FF5C85;
  --dark-1: #14151F;
  --dark-2: #171826;
  --dark-3: #232643;
  --bg-light: #F5F6FA;
  --card-bg: #FFFFFF;
  --text-1: #1E2130;
  --text-2: #5C607A;
  --text-3: #8C8FA9;
  --border: #E6E8F0;
  --danger: #E5484D;
  --warning: #F5A623;
  --success: #16B464;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-tag: 6px;
  --shadow-card: 0 2px 8px rgba(20, 21, 31, 0.04);
  --shadow-hover: 0 8px 24px rgba(123, 89, 255, 0.12);
  --transition: 200ms cubic-bezier(0.2, 0, 0, 1);
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-1);
  background: var(--bg-light);
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}
img {
  max-width: 100%;
  display: block;
}
ul, ol {
  list-style: none;
}
button, input {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
}
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 3px solid rgba(123, 89, 255, 0.45);
  outline-offset: 2px;
  border-radius: 4px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  border: 1.5px solid transparent;
}
.btn--lg {
  height: 54px;
  padding: 0 36px;
  font-size: 16px;
}
.btn--primary {
  background: var(--primary);
  color: #fff;
}
.btn--primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(123, 89, 255, 0.25);
}
.btn--primary:active {
  transform: translateY(0);
  box-shadow: none;
}
.btn--neon {
  background: var(--neon);
  color: #0d0e15;
}
.btn--neon:hover {
  background: var(--neon-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(215, 255, 63, 0.25);
}
.btn--neon:active {
  transform: translateY(0);
}
.btn--outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.7);
  color: #fff;
}
.btn--outline:hover {
  background: rgba(123, 89, 255, 0.08);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn--outline-dark {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}
.btn--outline-dark:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}
.btn--sm {
  height: 38px;
  padding: 0 20px;
  font-size: 14px;
}
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 220px;
  height: 100vh;
  background: var(--dark-1);
  display: flex;
  flex-direction: column;
  z-index: 1000;
}
.sidebar__brand {
  height: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.brand-mark {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  line-height: 1.2;
}
.brand-neon {
  color: var(--neon);
}
.brand-sub {
  font-size: 11px;
  color: #9BA0B5;
  letter-spacing: 4px;
  margin-top: 2px;
}
.sidebar__nav {
  flex: 1;
  padding: 16px 0;
  display: flex;
  flex-direction: column;
}
.sidebar__nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 44px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 500;
  color: #9BA0B5;
  border-left: 3px solid transparent;
  transition: all var(--transition);
}
.sidebar__nav a i {
  width: 20px;
  text-align: center;
  font-size: 16px;
}
.sidebar__nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}
.sidebar__nav a.active {
  color: #fff;
  background: rgba(123, 89, 255, 0.1);
  border-left-color: var(--neon);
}
.sidebar__bottom {
  padding: 16px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.sidebar__bottom .btn {
  width: 100%;
}
.main {
  margin-left: 220px;
  min-height: 100vh;
  background: var(--bg-light);
}
.container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 32px;
}
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: var(--dark-1);
  z-index: 1100;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}
.mobile-header__brand {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
}
.mobile-header__burger {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  border-radius: 8px;
  transition: background var(--transition);
}
.mobile-header__burger:hover {
  background: rgba(255, 255, 255, 0.08);
}
.mobile-drawer {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--dark-1);
  z-index: 1050;
  display: flex;
  flex-direction: column;
  padding: 20px 0;
  transform: translateX(100%);
  transition: transform 300ms cubic-bezier(0.2, 0, 0, 1);
  overflow-y: auto;
}
.mobile-drawer.open {
  transform: translateX(0);
}
.mobile-drawer a {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 52px;
  padding: 0 28px;
  font-size: 16px;
  font-weight: 500;
  color: #9BA0B5;
  border-left: 3px solid transparent;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: all var(--transition);
}
.mobile-drawer a i {
  width: 22px;
  text-align: center;
}
.mobile-drawer a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}
.mobile-drawer a.active {
  color: #fff;
  border-left-color: var(--neon);
  background: rgba(123, 89, 255, 0.1);
}
.mobile-drawer__cta {
  margin-top: auto;
  padding: 20px 28px;
}
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--dark-2) 0%, #241E4A 100%);
  padding: 88px 0 72px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity: 0.25;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(23, 24, 38, 0.82) 0%, rgba(36, 30, 74, 0.55) 100%);
}
.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 55fr 45fr;
  gap: 48px;
  align-items: center;
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 32px;
}
.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--pink);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-tag);
  margin-bottom: 18px;
}
.hero__tag i {
  font-size: 11px;
}
.hero h1 {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.15;
  color: #fff;
  letter-spacing: -0.5px;
  margin-bottom: 18px;
}
.hero__neon {
  color: var(--neon);
}
.hero__subtitle {
  font-size: 17px;
  line-height: 1.8;
  color: #C9CBE7;
  max-width: 560px;
  margin-bottom: 32px;
}
.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero__visual {
  position: relative;
}
.hero__img {
  width: 100%;
  border-radius: 20px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  object-fit: cover;
  aspect-ratio: 4 / 3;
}
.hero__card {
  position: absolute;
  bottom: 24px;
  left: -20px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 14px;
  padding: 14px 20px;
  color: #fff;
  display: flex;
  flex-direction: column;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}
.hero__card-badge {
  font-size: 11px;
  color: var(--neon);
  font-weight: 600;
  letter-spacing: 2px;
}
.hero__card strong {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.3;
}
.hero__card span:last-child {
  font-size: 12px;
  color: #C9CBE7;
}
.data-bar {
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 36px 0;
}
.data-bar__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.data-bar__item {
  text-align: center;
  padding: 8px 0;
}
.data-bar__num {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
  letter-spacing: -0.5px;
}
.data-bar__label {
  font-size: 13px;
  color: var(--text-3);
  margin-top: 4px;
}
.section {
  padding: 96px 0;
}
.section--white {
  background: #fff;
}
.section__head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 48px;
}
.section__head::before {
  content: "";
  width: 4px;
  height: 28px;
  background: var(--primary);
  border-radius: 2px;
  flex-shrink: 0;
}
.section__head h2 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.25;
}
.section__head p {
  color: var(--text-2);
  font-size: 15px;
  margin-top: 2px;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-card);
  position: relative;
  transition: all var(--transition);
  overflow: hidden;
}
.feature-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.feature-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary);
  margin-bottom: 18px;
  transition: all var(--transition);
}
.feature-card:hover .feature-card__icon {
  background: var(--primary);
  color: #fff;
}
.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
}
.feature-card__arrow {
  position: absolute;
  bottom: 24px;
  right: 24px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--primary);
  transition: all var(--transition);
}
.feature-card:hover .feature-card__arrow {
  transform: translateX(4px);
  background: var(--primary);
  color: #fff;
}
.scene-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 56px;
}
.scene-row:last-child {
  margin-bottom: 0;
}
.scene-row__img {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.scene-row__img img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  transition: transform 500ms ease;
}
.scene-row__img:hover img {
  transform: scale(1.03);
}
.scene-row:nth-child(even) .scene-row__img {
  order: 2;
}
.scene-row__tag {
  display: inline-block;
  background: var(--pink);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-tag);
  margin-bottom: 14px;
}
.scene-row h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}
.scene-row p {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 8px;
}
.scene-row__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  margin-top: 12px;
}
.scene-row__link:hover {
  text-decoration: underline;
}
.scene-row__link i {
  font-size: 12px;
  transition: transform var(--transition);
}
.scene-row__link:hover i {
  transform: translateX(4px);
}
.steps {
  background: var(--dark-2);
  position: relative;
  overflow: hidden;
  padding: 96px 0;
}
.steps::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: 0.18;
}
.steps__inner {
  position: relative;
  z-index: 2;
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 32px;
}
.steps__head {
  text-align: center;
  margin-bottom: 56px;
}
.steps__head h2 {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}
.steps__head p {
  color: #C9CBE7;
  font-size: 16px;
}
.steps__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.step-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-card);
  padding: 28px;
  transition: all var(--transition);
}
.step-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
}
.step-card__num {
  font-size: 36px;
  font-weight: 800;
  color: var(--neon);
  line-height: 1.2;
  margin-bottom: 14px;
}
.step-card h3 {
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}
.step-card p {
  color: #9BA0B5;
  font-size: 13px;
  line-height: 1.6;
}
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}
.faq-wrap__head {
  text-align: center;
  margin-bottom: 48px;
}
.faq-wrap__head h2 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 10px;
}
.faq-wrap__head p {
  color: var(--text-2);
  font-size: 15px;
}
.faq-item {
  background: #fff;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item:hover {
  box-shadow: var(--shadow-hover);
}
.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-1);
  user-select: none;
}
.faq-item__icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1.5px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--primary);
  transition: transform 300ms ease;
  flex-shrink: 0;
}
.faq-item.open .faq-item__icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-item__answer {
  display: none;
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
}
.faq-item.open .faq-item__answer {
  display: block;
}
.cta-banner {
  background: linear-gradient(120deg, #2A1F5E, #4B2A8A);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(215, 255, 63, 0.15);
  filter: blur(60px);
}
.cta-banner h2 {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}
.cta-banner p {
  color: #C9CBE7;
  font-size: 16px;
  margin-bottom: 32px;
}
.cta-banner__form {
  display: flex;
  gap: 12px;
  justify-content: center;
  max-width: 520px;
  margin: 0 auto;
  flex-wrap: wrap;
}
.cta-banner__input {
  flex: 1;
  min-width: 260px;
  height: 52px;
  background: rgba(255, 255, 255, 0.14);
  border: 1.5px solid transparent;
  border-radius: var(--radius-btn);
  padding: 0 18px;
  font-size: 15px;
  color: #fff;
  transition: all var(--transition);
}
.cta-banner__input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}
.cta-banner__input:focus {
  background: rgba(255, 255, 255, 0.22);
  border-color: var(--neon);
  outline: none;
}
.footer {
  background: var(--dark-1);
  padding: 64px 0 32px;
}
.footer__grid {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 32px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
}
.footer__brand .brand-mark {
  font-size: 26px;
}
.footer__brand p {
  color: #9BA0B5;
  font-size: 14px;
  line-height: 1.7;
  margin-top: 16px;
  max-width: 300px;
}
.footer__col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer__col ul li {
  margin-bottom: 10px;
}
.footer__col ul a {
  color: #9BA0B5;
  font-size: 14px;
}
.footer__col ul a:hover {
  color: var(--primary);
}
.footer__col ul li i {
  width: 20px;
  color: var(--neon);
  margin-right: 6px;
}
.footer__bottom {
  max-width: 1320px;
  margin: 48px auto 0;
  padding: 24px 32px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #6B6E82;
  font-size: 12px;
  text-align: center;
}
@media (max-width: 1199px) {
  .hero h1 {
    font-size: 40px;
  }
  .hero__inner {
    padding: 0 24px;
  }
  .features-grid {
    grid-template-columns: 1fr 1fr;
  }
  .steps__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 991px) {
  .sidebar {
    display: none;
  }
  .mobile-header {
    display: flex;
  }
  .main {
    margin-left: 0;
    padding-top: 64px;
  }
  .hero {
    padding: 56px 0 48px;
  }
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 0 20px;
  }
  .hero h1 {
    font-size: 34px;
  }
  .data-bar__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .section {
    padding: 64px 0;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .scene-row {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .scene-row:nth-child(even) .scene-row__img {
    order: 0;
  }
  .steps {
    padding: 64px 0;
  }
  .steps__grid {
    grid-template-columns: 1fr;
  }
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding: 0 20px;
  }
  .container {
    padding: 0 20px;
  }
}
@media (max-width: 767px) {
  .data-bar__grid {
    grid-template-columns: 1fr 1fr;
  }
  .hero__card {
    left: 12px;
    bottom: 12px;
  }
  .cta-banner {
    padding: 56px 20px;
  }
  .cta-banner h2 {
    font-size: 26px;
  }
  .cta-banner__form {
    flex-direction: column;
  }
  .cta-banner__input {
    min-width: 100%;
  }
  .cta-banner__form .btn {
    width: 100%;
  }
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 0 20px;
  }
  .footer__brand p {
    max-width: 100%;
  }
  .section__head h2 {
    font-size: 24px;
  }
  .scene-row h3 {
    font-size: 20px;
  }
}

/* roulang page: article */
:root {
  --primary: #7B59FF;
  --primary-hover: #6A45F2;
  --primary-light: rgba(123, 89, 255, 0.08);
  --neon: #D7FF3F;
  --neon-hover: #C4F030;
  --neon-soft: rgba(215, 255, 63, 0.2);
  --pink: #FF5C85;
  --pink-soft: rgba(255, 92, 133, 0.12);
  --dark-1: #14151F;
  --dark-2: #171826;
  --dark-3: #232643;
  --bg: #F5F6FA;
  --card: #FFFFFF;
  --text-1: #1E2130;
  --text-2: #5C607A;
  --text-3: #8C8FA9;
  --border: #E6E8F0;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow-default: 0 2px 8px rgba(20, 21, 31, 0.04);
  --shadow-hover: 0 8px 24px rgba(123, 89, 255, 0.12);
  --shadow-lift: 0 12px 40px rgba(20, 21, 31, 0.18);
  --transition: 200ms cubic-bezier(0.2, 0, 0, 1);
  --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-1);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-hover); }
ul, ol { list-style: none; }
button { font-family: var(--font-stack); cursor: pointer; border: none; background: none; }
input, textarea { font-family: var(--font-stack); }

/* 布局 */
.layout { display: flex; min-height: 100vh; }
.main-content {
  flex: 1;
  margin-left: 220px;
  max-width: 1320px;
  padding: 0 32px;
  background: var(--bg);
}
.container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 侧边导航 */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: 220px;
  height: 100vh;
  background: var(--dark-1);
  display: flex;
  flex-direction: column;
  z-index: 1000;
}
.sidebar__brand {
  height: 80px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.brand-mark {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  line-height: 1.2;
}
.brand-mark .brand-neon { color: var(--neon); }
.brand-sub {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 2px;
  letter-spacing: 2px;
}
.sidebar__nav { flex: 1; padding: 16px 0; }
.sidebar__nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 44px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 500;
  color: #9BA0B5;
  border-left: 3px solid transparent;
  transition: all var(--transition);
}
.sidebar__nav a i { width: 18px; text-align: center; font-size: 14px; }
.sidebar__nav a:hover { color: #fff; background: rgba(255, 255, 255, 0.06); }
.sidebar__nav a.active {
  color: var(--neon);
  border-left-color: var(--neon);
  background: rgba(123, 89, 255, 0.1);
}
.sidebar__cta {
  padding: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.sidebar__cta .btn { width: 100%; height: 40px; font-size: 14px; }

/* 顶部移动导航 */
.topbar {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 64px;
  background: var(--dark-1);
  z-index: 1000;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}
.topbar__brand {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 4px;
  letter-spacing: -0.5px;
}
.topbar__brand .brand-neon { color: var(--neon); }
.topbar__toggle {
  color: #fff;
  font-size: 20px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.topbar__toggle:hover { background: rgba(255, 255, 255, 0.08); }
.topbar__toggle:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }

/* 移动抽屉 */
.drawer {
  display: none;
  position: fixed;
  top: 64px; left: 0; right: 0;
  background: var(--dark-1);
  z-index: 999;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-lift);
}
.drawer.open { display: block; }
.drawer a {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 48px;
  padding: 0 24px;
  color: #9BA0B5;
  font-size: 15px;
  border-left: 3px solid transparent;
  transition: all var(--transition);
}
.drawer a i { width: 18px; text-align: center; }
.drawer a:hover { color: #fff; background: rgba(255, 255, 255, 0.06); }
.drawer a.active { color: var(--neon); border-left-color: var(--neon); background: rgba(123, 89, 255, 0.1); }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
}
.btn:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }
.btn:active { transform: translateY(0); }
.btn--primary { background: var(--primary); color: #fff; }
.btn--primary:hover { background: var(--primary-hover); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(123, 89, 255, 0.3); }
.btn--neon { background: var(--neon); color: #171826; }
.btn--neon:hover { background: var(--neon-hover); color: #171826; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(215, 255, 63, 0.3); }
.btn--ghost { background: transparent; color: #fff; border: 1.5px solid rgba(255, 255, 255, 0.5); }
.btn--ghost:hover { background: rgba(255, 255, 255, 0.08); color: #fff; transform: translateY(-2px); }
.btn--outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn--outline:hover { background: rgba(123, 89, 255, 0.06); color: var(--primary-hover); transform: translateY(-2px); }
.btn--lg { height: 54px; padding: 0 36px; font-size: 16px; }
.btn--sm { height: 36px; padding: 0 16px; font-size: 13px; }

/* 标签徽章 */
.badge {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 8px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  line-height: 22px;
  white-space: nowrap;
}
.badge--purple { background: var(--primary-light); color: var(--primary); }
.badge--neon { background: var(--neon-soft); color: #5C7A00; }
.badge--pink { background: var(--pink-soft); color: var(--pink); }

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-3);
  padding: 24px 0 16px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-3); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: #C0C3D0; font-size: 11px; }
.breadcrumb .current { color: var(--text-2); font-weight: 500; }

/* 文章详情页 */
.article-page { padding: 8px 0 64px; }
.article-body { max-width: 800px; margin: 0 auto; }
.article-header { margin-bottom: 32px; }
.article-header .category-tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}
.article-header h1 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.5px;
  color: var(--text-1);
  margin: 0 0 20px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-3);
  flex-wrap: wrap;
}
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta i { color: var(--primary); font-size: 13px; }

/* 正文富文本 */
.article-content {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 40px 44px;
  box-shadow: var(--shadow-default);
}
.article-content p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-2);
  margin-bottom: 24px;
  text-indent: 0;
}
.article-content h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-1);
  margin: 40px 0 16px;
  padding-left: 12px;
  border-left: 4px solid var(--primary);
  letter-spacing: -0.3px;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-1);
  margin: 24px 0 12px;
}
.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 24px 0;
}
.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: var(--bg);
  padding: 16px 20px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 24px 0;
  color: var(--text-2);
}
.article-content blockquote p { margin-bottom: 0; color: var(--text-2); }
.article-content ul {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 24px;
  color: var(--text-2);
}
.article-content ol {
  list-style: decimal;
  padding-left: 20px;
  margin-bottom: 24px;
  color: var(--text-2);
}
.article-content li { margin-bottom: 8px; line-height: 1.7; }
.article-content code {
  background: #F0F1F7;
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 14px;
  font-family: "SF Mono", "Cascadia Code", Consolas, monospace;
}
.article-content pre {
  background: #F0F1F7;
  border-radius: var(--radius-md);
  padding: 16px;
  overflow-x: auto;
  margin-bottom: 24px;
  line-height: 1.6;
}
.article-content pre code { background: transparent; padding: 0; }
.article-content em, .article-content i { font-style: normal; }
.article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
.article-content a:hover { color: var(--primary-hover); }

/* 文末导航 */
.article-footer-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.article-footer-nav a {
  font-size: 14px;
  color: var(--text-2);
  transition: color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-footer-nav a:hover { color: var(--primary); }
.article-footer-nav .back-link {
  color: var(--primary);
  font-weight: 600;
}
.article-footer-nav .back-link:hover { color: var(--primary-hover); }
.article-footer-nav .placeholder { flex: 1; }

/* 相关推荐 */
.related-section {
  margin-top: 48px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
.related-section h2 {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-1);
  margin-bottom: 20px;
  padding-left: 12px;
  border-left: 4px solid var(--primary);
  letter-spacing: -0.3px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.related-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-default);
  transition: all var(--transition);
  display: block;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.related-card img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  transition: transform var(--transition);
}
.related-card:hover img { transform: scale(1.03); }
.related-card__info { padding: 16px; }
.related-card__info h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-1);
  line-height: 1.4;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition);
}
.related-card__info h3 a { color: inherit; }
.related-card__info h3 a:hover { color: var(--primary); }
.related-card__info time {
  font-size: 12px;
  color: var(--text-3);
}

/* 内容未找到 */
.not-found {
  text-align: center;
  padding: 80px 24px;
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-default);
  max-width: 800px;
  margin: 40px auto;
}
.not-found i {
  font-size: 48px;
  color: var(--text-3);
  margin-bottom: 16px;
}
.not-found h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-1);
  margin-bottom: 8px;
}
.not-found p { color: var(--text-3); margin-bottom: 24px; }

/* 页脚 */
.footer {
  background: var(--dark-1);
  padding: 64px 0 32px;
  margin-top: 64px;
}
.footer__grid {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 32px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
}
.footer__brand .brand-mark { font-size: 22px; }
.footer__brand p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
  line-height: 1.7;
  margin-top: 12px;
}
.footer__col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer__col ul li { margin-bottom: 10px; color: rgba(255, 255, 255, 0.5); font-size: 14px; }
.footer__col ul a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
  transition: color var(--transition);
}
.footer__col ul a:hover { color: var(--primary); }
.footer__col ul li i { width: 20px; margin-right: 4px; color: var(--primary); }
.footer__bottom {
  max-width: 1320px;
  margin: 40px auto 0;
  padding: 24px 32px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.35);
  font-size: 12px;
  text-align: center;
}

/* 响应式 */
@media (max-width: 1199px) {
  .main-content { padding: 0 24px; }
  .footer__grid { padding: 0 24px; }
}

@media (max-width: 991px) {
  .sidebar { display: none; }
  .topbar { display: flex; }
  .main-content {
    margin-left: 0;
    padding: 64px 16px 0;
  }
  .footer {
    margin-top: 48px;
  }
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    padding: 0 16px;
  }
  .related-grid { grid-template-columns: 1fr 1fr; }
  .article-content { padding: 28px 20px; }
  .article-footer-nav { gap: 12px; }
}

@media (max-width: 767px) {
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .related-grid { grid-template-columns: 1fr; }
  .article-header h1 { font-size: 24px; }
  .article-content { padding: 24px 16px; }
  .article-content p { font-size: 15px; }
  .article-meta { gap: 10px; flex-wrap: wrap; }
  .article-body { padding: 0 4px; }
  .article-footer-nav { flex-direction: column; align-items: stretch; text-align: center; }
  .article-footer-nav a { justify-content: center; }
  .article-footer-nav .placeholder { display: none; }
  .breadcrumb { padding: 16px 0 12px; font-size: 12px; }
  .btn { width: auto; }
  .btn--full-mobile { width: 100%; }
  .topbar { padding: 0 16px; }
  .footer { padding: 48px 0 24px; }
  .footer__bottom { padding: 20px 16px 0; }
}

/* roulang page: category2 */
:root {
  --primary: #7B59FF;
  --primary-hover: #6A45F2;
  --primary-light: rgba(123, 89, 255, 0.08);
  --neon: #D7FF3F;
  --neon-hover: #C4F030;
  --pink: #FF5C85;
  --dark-1: #14151F;
  --dark-2: #171826;
  --dark-3: #232643;
  --bg: #F5F6FA;
  --card: #FFFFFF;
  --text-1: #1E2130;
  --text-2: #5C607A;
  --text-3: #8C8FA9;
  --border: #E6E8F0;
  --error: #E5484D;
  --warning: #F5A623;
  --success: #16B464;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-tag: 6px;
  --shadow-card: 0 2px 8px rgba(20, 21, 31, 0.04);
  --shadow-hover: 0 8px 24px rgba(123, 89, 255, 0.12);
  --shadow-pop: 0 12px 40px rgba(20, 21, 31, 0.18);
  --transition: 200ms cubic-bezier(0.2, 0, 0, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text-1);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: color var(--transition); }
img { max-width: 100%; display: block; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
ul { list-style: none; }
:focus-visible { outline: 3px solid rgba(123, 89, 255, 0.45); outline-offset: 2px; border-radius: 4px; }

/* 容器 */
.container { max-width: 1320px; margin: 0 auto; padding: 0 32px; }
.container--narrow { max-width: 900px; }

/* 侧边栏 */
.sidebar {
  position: fixed; left: 0; top: 0; width: 220px; height: 100vh;
  background: var(--dark-1); z-index: 200;
  display: flex; flex-direction: column; overflow-y: auto;
}
.sidebar__brand {
  height: 80px; display: flex; align-items: center; justify-content: center;
  flex-direction: column; border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}
.brand-mark {
  font-size: 22px; font-weight: 800; color: #fff; letter-spacing: -0.5px; line-height: 1.2;
}
.brand-neon { color: var(--neon); }
.brand-sub { font-size: 11px; color: var(--text-3); letter-spacing: 2px; margin-top: 2px; }
.sidebar__nav { padding: 16px 0; flex: 1; }
.sidebar__nav a {
  display: flex; align-items: center; gap: 12px;
  height: 44px; padding: 0 20px; font-size: 15px; font-weight: 500;
  color: #9BA0B5; border-left: 3px solid transparent; transition: all var(--transition);
}
.sidebar__nav a i { width: 18px; text-align: center; font-size: 16px; }
.sidebar__nav a:hover { color: #fff; background: rgba(255, 255, 255, 0.06); }
.sidebar__nav a.active {
  color: var(--primary); border-left-color: var(--neon); background: var(--primary-light);
}
.sidebar__cta { padding: 20px; text-align: center; flex-shrink: 0; }
.btn { display: inline-flex; align-items: center; justify-content: center; height: 46px; padding: 0 28px; border-radius: var(--radius-btn); font-size: 15px; font-weight: 700; letter-spacing: -0.2px; transition: all var(--transition); text-align: center; }
.btn--sm { height: 38px; padding: 0 20px; font-size: 14px; }
.btn--lg { height: 54px; padding: 0 34px; font-size: 16px; }
.btn--lime { background: var(--neon); color: #101019; }
.btn--lime:hover { background: var(--neon-hover); box-shadow: 0 8px 24px rgba(215, 255, 63, 0.35); transform: translateY(-2px); }
.btn--purple { background: var(--primary); color: #fff; }
.btn--purple:hover { background: var(--primary-hover); box-shadow: 0 8px 24px rgba(123, 89, 255, 0.35); transform: translateY(-2px); }
.btn--ghost { background: transparent; border: 1.5px solid rgba(255, 255, 255, 0.5); color: #fff; }
.btn--ghost:hover { border-color: #fff; background: rgba(123, 89, 255, 0.15); transform: translateY(-2px); }
.btn:active { transform: translateY(0); box-shadow: none; }

/* 移动端顶部 */
.mobile-header { display: none; }
.drawer { display: none; }

/* 主区域 */
.main { margin-left: 220px; }

/* Hero */
.hero {
  position: relative; background: linear-gradient(135deg, var(--dark-2) 0%, #241E4A 100%);
  overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover; background-position: center; opacity: 0.3;
}
.hero::after {
  content: ''; position: absolute; inset: 0;
  background: rgba(20, 21, 31, 0.45);
}
.hero__inner {
  position: relative; z-index: 2; max-width: 1320px; margin: 0 auto;
  padding: 72px 32px; display: grid; grid-template-columns: 55% 45%; gap: 48px; align-items: center;
}
.hero__tag {
  display: inline-flex; align-items: center; height: 24px; padding: 0 10px;
  background: var(--pink); color: #fff; font-size: 12px; font-weight: 700;
  border-radius: var(--radius-tag); letter-spacing: 0.5px; margin-bottom: 16px;
}
.hero h1 { font-size: 44px; font-weight: 800; color: #fff; line-height: 1.15; letter-spacing: -0.5px; margin-bottom: 16px; }
.hero h1 .text-neon { color: var(--neon); }
.hero__desc { font-size: 17px; color: #C9CBE7; line-height: 1.75; margin-bottom: 28px; max-width: 560px; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero__visual { position: relative; }
.hero__visual > img { border-radius: var(--radius-card); box-shadow: var(--shadow-pop); object-fit: cover; width: 100%; }
.hero__card {
  position: absolute; right: -16px; bottom: -24px; width: 180px; border-radius: 12px;
  overflow: hidden; box-shadow: var(--shadow-pop); border: 3px solid #fff;
}
.hero__card img { width: 100%; height: 120px; object-fit: cover; }

/* 统计条 */
.stats { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.stats__grid { max-width: 1320px; margin: 0 auto; padding: 36px 32px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stats__item { text-align: center; }
.stats__num { display: block; font-size: 32px; font-weight: 800; color: var(--primary); line-height: 1.2; letter-spacing: -1px; }
.stats__label { display: block; font-size: 13px; color: var(--text-3); margin-top: 4px; }

/* 区块 */
.section { padding: 96px 0; }
.section--dark { background: var(--dark-1); border-radius: 24px; margin: 0 32px; padding-left: 48px; padding-right: 48px; }
.section__head { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 48px; flex-direction: column; }
.section__head h2 {
  font-size: 32px; font-weight: 800; letter-spacing: -0.5px; line-height: 1.25;
  padding-left: 16px; position: relative;
}
.section__head h2::before {
  content: ''; position: absolute; left: 0; top: 6px; bottom: 6px; width: 4px; border-radius: 4px;
  background: var(--primary);
}
.section__head p { font-size: 15px; color: var(--text-2); max-width: 640px; }
.section--dark .section__head h2 { color: #fff; }
.section--dark .section__head h2::before { background: var(--neon); }
.section--dark .section__head p { color: #9BA0B5; }

/* 功能卡片 */
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.feature-card {
  background: var(--card); border-radius: var(--radius-card); padding: 28px;
  box-shadow: var(--shadow-card); transition: transform var(--transition), box-shadow var(--transition);
  position: relative; border: 1px solid rgba(230, 232, 240, 0.6);
}
.feature-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.feature-card__icon {
  width: 48px; height: 48px; border-radius: 12px; background: var(--primary-light);
  display: flex; align-items: center; justify-content: center; font-size: 20px; color: var(--primary);
  margin-bottom: 18px; transition: all var(--transition);
}
.feature-card:hover .feature-card__icon { background: var(--primary); color: #fff; }
.feature-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; letter-spacing: -0.3px; }
.feature-card p { font-size: 14px; color: var(--text-2); line-height: 1.7; }
.feature-card::after {
  content: '\f061'; font-family: 'Font Awesome 6 Free'; font-weight: 900;
  position: absolute; right: 24px; bottom: 24px; font-size: 14px; color: var(--border);
  transition: all var(--transition);
}
.feature-card:hover::after { color: var(--primary); transform: translateX(4px); }

/* 四步学习路径 */
.path-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.path-step {
  background: rgba(255, 255, 255, 0.05); border-radius: var(--radius-card); padding: 28px 20px;
  border: 1px solid rgba(255, 255, 255, 0.08); transition: all var(--transition); position: relative;
}
.path-step:hover { background: rgba(123, 89, 255, 0.15); border-color: rgba(123, 89, 255, 0.4); transform: translateY(-4px); }
.path-step__num {
  display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px;
  border-radius: 50%; background: var(--neon); color: #101019; font-size: 15px; font-weight: 800;
  margin-bottom: 16px; letter-spacing: -0.5px;
}
.path-step h3 { font-size: 17px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.path-step p { font-size: 14px; color: #9BA0B5; line-height: 1.7; }

/* 指南卡片 */
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.guide-card {
  background: var(--card); border-radius: var(--radius-card); overflow: hidden;
  box-shadow: var(--shadow-card); transition: transform var(--transition), box-shadow var(--transition);
  border: 1px solid rgba(230, 232, 240, 0.6);
}
.guide-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.guide-card img { width: 100%; height: 160px; object-fit: cover; transition: transform 300ms ease; }
.guide-card:hover img { transform: scale(1.03); }
.guide-card__body { padding: 20px 24px 24px; }
.guide-card__body h3 { font-size: 18px; font-weight: 700; margin: 12px 0 8px; letter-spacing: -0.2px; }
.guide-card__body p { font-size: 14px; color: var(--text-2); line-height: 1.7; }

/* 标签 */
.tag { display: inline-flex; align-items: center; height: 22px; padding: 0 8px; border-radius: var(--radius-tag); font-size: 12px; font-weight: 700; letter-spacing: 0.3px; }
.tag--purple { background: var(--primary-light); color: var(--primary); }
.tag--lime { background: rgba(215, 255, 63, 0.2); color: #7a8a14; }
.tag--pink { background: rgba(255, 92, 133, 0.12); color: #d6336c; }

/* FAQ */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--card); border-radius: var(--radius-card); border: 1px solid var(--border); overflow: hidden; box-shadow: var(--shadow-card); }
.faq-question {
  display: flex; align-items: center; justify-content: space-between; width: 100%;
  padding: 20px 24px; font-size: 16px; font-weight: 600; color: var(--text-1); text-align: left;
  transition: background var(--transition);
}
.faq-question:hover { background: rgba(123, 89, 255, 0.03); }
.faq-icon {
  width: 20px; height: 20px; border-radius: 50%; border: 1.5px solid var(--primary);
  display: flex; align-items: center; justify-content: center; font-size: 10px; color: var(--primary);
  flex-shrink: 0; transition: transform var(--transition);
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; border-color: var(--primary); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 300ms ease; }
.faq-item.open .faq-answer { max-height: 240px; }
.faq-answer p { padding: 0 24px 20px; font-size: 14px; color: var(--text-2); line-height: 1.7; }

/* CTA */
.cta {
  background: linear-gradient(135deg, var(--dark-2) 0%, var(--dark-3) 100%);
  border-radius: 24px; margin: 0 32px 96px; padding: 72px 48px; text-align: center;
  position: relative; overflow: hidden;
}
.cta::before {
  content: ''; position: absolute; inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover; background-position: center; opacity: 0.18;
}
.cta .container { position: relative; z-index: 2; }
.cta h2 { font-size: 34px; font-weight: 800; color: #fff; letter-spacing: -0.5px; margin-bottom: 12px; }
.cta p { font-size: 16px; color: #C9CBE7; margin-bottom: 28px; }
.cta .btn { margin: 0 auto; }

/* 页脚 */
.footer { background: var(--dark-1); padding: 64px 0 32px; margin-left: 220px; }
.footer__grid {
  max-width: 1320px; margin: 0 auto; padding: 0 32px;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 48px;
}
.footer__brand .brand-mark { font-size: 24px; }
.footer__brand .brand-sub { color: var(--text-3); }
.footer__brand p { font-size: 14px; color: #9BA0B5; margin-top: 16px; line-height: 1.75; max-width: 320px; }
.footer__col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer__col ul li { margin-bottom: 10px; }
.footer__col ul li a { font-size: 14px; color: #9BA0B5; transition: color var(--transition); }
.footer__col ul li a:hover { color: var(--primary); }
.footer__col ul li i { width: 18px; color: var(--primary); font-size: 13px; }
.footer__bottom {
  max-width: 1320px; margin: 48px auto 0; padding: 24px 32px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1); font-size: 12px; color: var(--text-3);
  text-align: center;
}

/* 响应式 */
@media (max-width: 1199px) {
  .main { margin-left: 220px; }
  .hero__inner { padding: 56px 24px; gap: 32px; }
  .hero h1 { font-size: 40px; }
  .section__head h2 { font-size: 30px; }
  .section--dark { margin: 0 24px; padding-left: 32px; padding-right: 32px; }
  .cta { margin: 0 24px 64px; padding: 56px 32px; }
  .footer__grid { padding: 0 24px; gap: 32px; }
  .footer__bottom { padding-left: 24px; padding-right: 24px; }
  .container { padding: 0 24px; }
}

@media (max-width: 991px) {
  .sidebar { display: none; }
  .main { margin-left: 0; }
  .mobile-header {
    display: flex; align-items: center; justify-content: space-between;
    height: 64px; background: var(--dark-1); padding: 0 20px; position: sticky; top: 0; z-index: 200;
  }
  .menu-toggle {
    width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 20px; border-radius: var(--radius-btn);
  }
  .menu-toggle:hover { background: rgba(255, 255, 255, 0.1); }
  .drawer {
    display: block; position: fixed; inset: 0; z-index: 300; background: var(--dark-1);
    transform: translateX(100%); transition: transform 300ms cubic-bezier(0.2, 0, 0, 1);
    overflow-y: auto;
  }
  .drawer.open { transform: translateX(0); }
  .drawer__head {
    display: flex; align-items: center; justify-content: space-between;
    height: 64px; padding: 0 20px; border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  .drawer__close {
    width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 20px; border-radius: var(--radius-btn);
  }
  .drawer__close:hover { background: rgba(255, 255, 255, 0.1); }
  .drawer__nav { padding: 16px 0; }
  .drawer__nav a {
    display: flex; align-items: center; gap: 14px; color: #9BA0B5;
    font-size: 16px; font-weight: 500; padding: 0 24px; height: 48px;
    border-left: 3px solid transparent;
  }
  .drawer__nav a i { width: 20px; text-align: center; font-size: 17px; }
  .drawer__nav a.active { color: var(--primary); border-left-color: var(--neon); background: rgba(123, 89, 255, 0.08); }
  .drawer__nav a:hover { color: #fff; background: rgba(255, 255, 255, 0.05); }

  .hero__inner { grid-template-columns: 1fr; gap: 32px; padding: 48px 24px; }
  .hero__visual { max-width: 480px; }
  .hero__card { right: -8px; bottom: -16px; width: 140px; }
  .hero__card img { height: 90px; }

  .section { padding: 64px 0; }
  .section--dark { border-radius: 16px; margin: 0 16px; padding: 48px 24px; }
  .cta { margin: 0 16px 64px; padding: 48px 24px; border-radius: 16px; }

  .stats__grid { grid-template-columns: repeat(2, 1fr); padding: 28px 24px; gap: 20px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .path-grid { grid-template-columns: 1fr 1fr; }
  .guide-grid { grid-template-columns: 1fr 1fr; }

  .footer { margin-left: 0; }
  .footer__grid { grid-template-columns: 1fr 1fr; padding: 0 24px; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 767px) {
  .container { padding: 0 16px; }
  .hero__inner { padding: 40px 16px; }
  .hero h1 { font-size: 30px; }
  .hero__desc { font-size: 15px; }
  .hero__actions .btn { width: 100%; }
  .hero__visual > img { display: none; }
  .hero__card { position: static; width: 100%; margin-top: 16px; max-width: 280px; }
  .hero__card img { height: 140px; }

  .section { padding: 56px 0; }
  .section__head { margin-bottom: 28px; }
  .section__head h2 { font-size: 24px; }
  .section__head p { font-size: 14px; }
  .section--dark { margin: 0 12px; padding: 40px 20px; }
  .cta { margin: 0 12px 48px; padding: 40px 20px; }
  .cta h2 { font-size: 26px; }
  .cta .btn { width: 100%; }

  .stats__grid { grid-template-columns: repeat(2, 1fr); padding: 24px 16px; gap: 16px; }
  .stats__num { font-size: 26px; }
  .stats__label { font-size: 12px; }

  .feature-grid { grid-template-columns: 1fr; gap: 16px; }
  .feature-card { padding: 24px; }
  .feature-card h3 { font-size: 18px; }
  .feature-card p { font-size: 14px; }

  .path-grid { grid-template-columns: 1fr; gap: 16px; }
  .path-step { padding: 24px; }
  .path-step__num { width: 36px; height: 36px; font-size: 14px; }

  .guide-grid { grid-template-columns: 1fr; gap: 16px; }
  .guide-card img { height: 140px; }
  .guide-card__body { padding: 16px 20px 20px; }

  .faq-question { padding: 16px 20px; font-size: 15px; }
  .faq-answer p { padding: 0 20px 16px; }

  .footer { padding: 48px 0 24px; }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; padding: 0 16px; }
  .footer__brand p { max-width: 100%; }
  .footer__bottom { padding: 20px 16px 0; }

  .section--dark { margin: 0 12px; }
}

@media (max-width: 480px) {
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; }
  .cta .btn { width: 100%; }
}

/* roulang page: category3 */
:root {
  --primary: #7B59FF;
  --primary-hover: #6A45F2;
  --primary-light: rgba(123, 89, 255, 0.08);
  --lime: #D7FF3F;
  --lime-hover: #C4F030;
  --pink: #FF5C85;
  --dark: #14151F;
  --dark-2: #171826;
  --dark-3: #232643;
  --bg: #F5F6FA;
  --card: #FFFFFF;
  --text-1: #1E2130;
  --text-2: #5C607A;
  --text-3: #8C8FA9;
  --border: #E6E8F0;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow-card: 0 2px 8px rgba(20, 21, 31, 0.04);
  --shadow-hover: 0 8px 24px rgba(123, 89, 255, 0.12);
  --shadow-pop: 0 12px 40px rgba(20, 21, 31, 0.18);
  --transition: 200ms cubic-bezier(0.2, 0, 0, 1);
  --sidebar-w: 220px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text-1);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: color var(--transition); }
img { max-width: 100%; display: block; }
button { font-family: inherit; border: none; cursor: pointer; }
ul, ol { list-style: none; }
input, textarea { font-family: inherit; }

/* ===== Sidebar ===== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--dark);
  z-index: 100;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.sidebar__brand {
  height: 80px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}
.brand-mark {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  line-height: 1.2;
}
.brand-neon {
  color: var(--lime);
}
.brand-sub {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 1px;
}
.sidebar__nav {
  flex: 1;
  padding: 16px 0;
}
.sidebar__nav a {
  display: flex;
  align-items: center;
  height: 44px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 500;
  color: #9BA0B5;
  position: relative;
  transition: all var(--transition);
}
.sidebar__nav a i {
  width: 22px;
  margin-right: 10px;
  font-size: 16px;
  text-align: center;
}
.sidebar__nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}
.sidebar__nav a.active {
  color: var(--primary);
  background: rgba(255, 255, 255, 0.03);
}
.sidebar__nav a.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--lime);
  border-radius: 0 3px 3px 0;
}
.sidebar__foot {
  padding: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 46px;
  padding: 0 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
  transition: all var(--transition);
  line-height: 1;
}
.btn--lime {
  background: var(--lime);
  color: #111;
}
.btn--lime:hover {
  background: var(--lime-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(215, 255, 63, 0.3);
}
.btn--primary {
  background: var(--primary);
  color: #fff;
}
.btn--primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(123, 89, 255, 0.35);
}
.btn--outline {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.6);
}
.btn--outline:hover {
  background: rgba(123, 89, 255, 0.1);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}
.btn--outline-dark {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn--outline-dark:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}
.btn--sm {
  height: 36px;
  padding: 0 18px;
  font-size: 14px;
  width: 100%;
}
.btn--lg {
  height: 54px;
  padding: 0 34px;
  font-size: 16px;
}
.btn--block { width: 100%; }
.btn:active { transform: translateY(0); }
.btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 3px solid rgba(123, 89, 255, 0.4);
  outline-offset: 2px;
  border-radius: var(--radius-md);
}

/* ===== Mobile Header ===== */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  z-index: 99;
  height: 64px;
  background: var(--dark);
  padding: 0 20px;
  align-items: center;
  justify-content: space-between;
}
.mobile-toggle {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  color: #fff;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.mobile-toggle:hover { background: rgba(255, 255, 255, 0.15); }

/* ===== Mobile Drawer ===== */
.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--dark);
  z-index: 200;
  padding: 90px 28px 40px;
  transform: translateX(-100%);
  transition: transform 300ms cubic-bezier(0.2, 0, 0, 1);
  overflow-y: auto;
}
.mobile-drawer.open { transform: translateX(0); }
.mobile-drawer__close {
  position: absolute;
  top: 16px;
  right: 20px;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  color: #fff;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mobile-drawer .drawer-nav a {
  display: flex;
  align-items: center;
  height: 50px;
  font-size: 17px;
  font-weight: 500;
  color: #9BA0B5;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.mobile-drawer .drawer-nav a i { width: 26px; margin-right: 10px; }
.mobile-drawer .drawer-nav a.active { color: var(--lime); }
.drawer-btn { margin-top: 30px; }

/* ===== Main Layout ===== */
.main {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.container {
  max-width: 1320px;
  padding: 0 32px;
  margin: 0 auto;
  width: 100%;
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, #171826 0%, #241E4A 100%);
  position: relative;
  overflow: hidden;
  color: #fff;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-1.png");
  background-size: cover;
  background-position: center;
  opacity: 0.25;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(23, 24, 38, 0.85) 55%, rgba(23, 24, 38, 0.4));
}
.hero .container {
  position: relative;
  z-index: 2;
  padding-top: 72px;
  padding-bottom: 72px;
  display: grid;
  grid-template-columns: 55fr 45fr;
  gap: 48px;
  align-items: center;
}
.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(215, 255, 63, 0.15);
  color: var(--lime);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 30px;
  margin-bottom: 20px;
  letter-spacing: 0.3px;
}
.hero__tag i { font-size: 12px; }
.hero h1 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin-bottom: 18px;
}
.hero h1 .neon { color: var(--lime); }
.hero__desc {
  font-size: 17px;
  color: #C9CBE7;
  line-height: 1.75;
  margin-bottom: 32px;
  max-width: 520px;
}
.hero__btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero__visual img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-pop);
  width: 100%;
  max-width: 420px;
  height: 280px;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.hero__float {
  position: absolute;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 12px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-size: 14px;
  box-shadow: var(--shadow-pop);
}
.hero__float--1 { top: 20px; left: -12px; }
.hero__float--2 { bottom: 30px; right: -8px; }
.hero__float i { font-size: 20px; color: var(--lime); }
.hero__float b { display: block; font-size: 16px; font-weight: 700; }

/* ===== Stats ===== */
.stats {
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 36px 0;
}
.stats__item {
  text-align: center;
  padding: 8px 16px;
}
.stats__num {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  letter-spacing: -0.5px;
}
.stats__label {
  font-size: 13px;
  color: var(--text-3);
  margin-top: 6px;
}

/* ===== Section ===== */
.section { padding: 76px 0; }
.section--bg { background: #fff; }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
}
.section-head__left {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.section-head__bar {
  width: 4px;
  height: 32px;
  background: var(--primary);
  border-radius: 4px;
  margin-top: 6px;
  flex-shrink: 0;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.25;
}
.section-head p {
  color: var(--text-3);
  font-size: 15px;
  margin-top: 6px;
}

/* ===== Service Cards ===== */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.service-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(230, 232, 240, 0.5);
  transition: all var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}
.service-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.service-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 20px;
  margin-bottom: 16px;
  transition: all var(--transition);
}
.service-card:hover .service-card__icon {
  background: var(--primary);
  color: #fff;
}
.service-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}
.service-card p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
  flex: 1;
}
.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  margin-top: 16px;
  transition: gap var(--transition);
}
.service-card__link:hover { gap: 10px; }
.service-card__arrow {
  position: absolute;
  right: 24px;
  bottom: 24px;
  color: var(--text-3);
  font-size: 18px;
  transition: all var(--transition);
}
.service-card:hover .service-card__arrow {
  color: var(--primary);
  transform: translateX(4px);
}

/* ===== Flow ===== */
.flow {
  background: var(--dark-2);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.flow::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(123, 89, 255, 0.3), transparent 70%);
  border-radius: 50%;
}
.flow .container { position: relative; z-index: 2; }
.flow .section-head h2 { color: #fff; }
.flow .section-head p { color: #9BA0B5; }
.flow__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.flow__list { display: flex; flex-direction: column; gap: 28px; }
.flow__item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.flow__step {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  letter-spacing: -0.5px;
}
.flow__item:nth-child(even) .flow__step { background: var(--lime); color: #111; }
.flow__item h4 { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.flow__item p { font-size: 14px; color: #9BA0B5; line-height: 1.7; }
.flow__visual img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-pop);
  width: 100%;
  height: 320px;
  object-fit: cover;
}

/* ===== FAQ ===== */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(230, 232, 240, 0.5);
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow-hover); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-1);
  user-select: none;
  gap: 16px;
}
.faq-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1.5px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-icon::after {
  content: "+";
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-a {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
  display: none;
}
.faq-item.open .faq-a { display: block; }

/* ===== CTA ===== */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, #4A30C8 60%, #2D1B8E 100%);
  padding: 72px 0;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-2.png");
  background-size: cover;
  background-position: center;
  opacity: 0.15;
}
.cta-banner .container { position: relative; z-index: 2; }
.cta-banner h2 {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 14px;
}
.cta-banner p {
  font-size: 16px;
  opacity: 0.9;
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.75;
}
.cta-banner .btn--lime { box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2); }

/* ===== Footer ===== */
.footer {
  background: var(--dark);
  color: #fff;
  padding: 64px 0 32px;
  margin-top: auto;
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  max-width: 1320px;
  padding: 0 32px;
  margin: 0 auto;
}
.footer__brand .brand-mark { font-size: 24px; }
.footer__brand p {
  font-size: 14px;
  color: #9BA0B5;
  margin-top: 16px;
  max-width: 360px;
  line-height: 1.7;
}
.footer__col h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
  color: #fff;
}
.footer__col ul li {
  margin-bottom: 10px;
  font-size: 14px;
  color: #9BA0B5;
}
.footer__col ul li a { color: #9BA0B5; }
.footer__col ul li a:hover { color: var(--primary); }
.footer__col ul li i {
  width: 18px;
  margin-right: 6px;
  color: var(--primary);
}
.footer__bottom {
  max-width: 1320px;
  padding: 24px 32px 0;
  margin: 40px auto 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
  text-align: center;
}

/* ===== Responsive ===== */
@media (max-width: 1200px) {
  .hero .container { padding: 56px 24px; }
  .container { padding: 0 24px; }
  .footer__grid { padding: 0 24px; }
}
@media (max-width: 991px) {
  .sidebar { display: none; }
  .mobile-header { display: flex; }
  .main { margin-left: 0; }
  .hero .container {
    grid-template-columns: 1fr;
    padding-top: 48px;
    padding-bottom: 48px;
  }
  .hero__visual { order: -1; max-width: 420px; margin: 0 auto 24px; }
  .hero h1 { font-size: 32px; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .cards-grid { grid-template-columns: 1fr 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 767px) {
  body { font-size: 15px; }
  .section { padding: 56px 0; }
  .hero h1 { font-size: 28px; }
  .hero__desc { font-size: 15px; }
  .hero__btns .btn { width: 100%; }
  .cards-grid { grid-template-columns: 1fr; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); padding: 24px 0; }
  .stats__num { font-size: 28px; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 12px; margin-bottom: 32px; }
  .section-head h2 { font-size: 26px; }
  .flow__content { grid-template-columns: 1fr; gap: 32px; }
  .flow__visual img { height: 220px; }
  .cta-banner { padding: 48px 0; }
  .cta-banner h2 { font-size: 26px; }
  .footer { padding: 48px 0 24px; }
  .footer__grid { grid-template-columns: 1fr; padding: 0 20px; gap: 32px; }
  .footer__bottom { padding: 20px 20px 0; }
}
@media (max-width: 520px) {
  .hero__float { display: none; }
  .stats__grid { grid-template-columns: 1fr 1fr; }
  .container { padding: 0 16px; }
  .footer__grid { padding: 0 16px; }
}