/* roulang page: index */
:root{
  --bg-deep:#07111F;
  --bg-body:#0B1A2E;
  --panel:rgba(255,255,255,.05);
  --panel-2:rgba(255,255,255,.08);
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --brand:#2B8CFF;
  --cyan:#25E4FF;
  --green:#3FE0B4;
  --danger:#FF4A6A;
  --text:#EAF2FF;
  --text-2:#9FB3D1;
  --text-3:#677F9E;
  --radius-sm:6px;
  --radius-card:12px;
  --radius-hero:18px;
  --shadow-cyan:0 0 0 1px rgba(37,228,255,.25),0 4px 24px rgba(37,228,255,.22);
  --shadow-cyan-hover:0 0 0 1px rgba(37,228,255,.35),0 6px 32px rgba(37,228,255,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;background:var(--bg-body);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;pointer-events:none;background:radial-gradient(circle at 80% 0%,rgba(37,228,255,.05),transparent 38%),radial-gradient(circle at 20% 20%,rgba(43,140,255,.05),transparent 40%),linear-gradient(180deg,#07111F,#0B1A2E);z-index:-1}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--cyan);text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:#7bEBFF}
button,input,select,textarea{font-family:inherit;font-size:1rem}
.container{max-width:1280px;margin:0 auto;padding:0 32px}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
::selection{background:rgba(37,228,255,.25)}

/* ===== Header ===== */
.site-header{position:sticky;top:0;left:0;right:0;z-index:999;background:rgba(7,17,31,.78);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--line);transition:background .3s var(--ease),box-shadow .3s var(--ease)}
.site-header.scrolled{background:rgba(7,17,31,.92);box-shadow:0 10px 32px rgba(0,0,0,.36)}
.brand-row{display:flex;align-items:center;justify-content:space-between;min-height:66px;transition:min-height .3s var(--ease)}
.site-header.scrolled .brand-row{min-height:56px}
.brand-logo{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.logo-mark{width:42px;height:42px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--cyan));display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;box-shadow:0 4px 18px rgba(37,228,255,.24)}
.brand-text strong{display:block;font-size:22px;font-weight:720;letter-spacing:.3px;color:var(--text);white-space:nowrap}
.brand-text small{display:block;font-size:11px;color:var(--text-3);letter-spacing:.1em;white-space:nowrap}
.brand-tools{display:flex;align-items:center;gap:14px}
.hot-tags{display:flex;gap:8px;align-items:center}
.hot-tags span{color:var(--text-3);font-size:13px}
.hot-tags a{font-size:13px;padding:4px 12px;border-radius:999px;border:1px solid var(--line);color:var(--text-2);transition:border-color .25s,color .25s}
.hot-tags a:hover{border-color:rgba(37,228,255,.5);color:var(--cyan)}
.icon-btn{width:38px;height:38px;border-radius:8px;border:1px solid var(--line);background:var(--panel);color:var(--text-2);display:inline-flex;align-items:center;justify-content:center;font-size:15px;cursor:pointer;transition:all .25s var(--ease)}
.icon-btn:hover{color:var(--cyan);border-color:rgba(37,228,255,.4);background:rgba(37,228,255,.06)}
.search-input-wrap{position:relative;display:flex;align-items:center}
.search-input-wrap input{width:0;opacity:0;padding:0;border:1px solid transparent;border-radius:999px;background:var(--panel-2);color:var(--text);transition:all .3s var(--ease);height:38px}
.search-input-wrap.open input{width:210px;opacity:1;padding:0 38px 0 16px}
.search-input-wrap.open i.fa-magnifying-glass{right:14px}
.search-icon-btn{position:absolute;right:0;top:50%;transform:translateY(-50%);width:38px;height:38px;border:0;background:transparent;color:var(--text-2);cursor:pointer;z-index:2;transition:color .2s}
.search-icon-btn:hover{color:var(--cyan)}
.search-submit-btn{position:absolute;right:0;top:50%;transform:translateY(-50%);border:none;background:transparent;color:var(--text-3);font-size:14px;cursor:pointer}
.channel-row{display:flex;align-items:center;justify-content:space-between;min-height:46px;border-top:1px solid rgba(255,255,255,.05);transition:min-height .3s var(--ease)}
.site-header.scrolled .channel-row{min-height:0;border-top:0;opacity:0;margin-top:-46px;}
.channel-nav{display:flex;align-items:center;gap:28px;flex-wrap:wrap}
.nav-link{font-size:15px;color:var(--text-2);padding:10px 2px 6px;border-bottom:2px solid transparent;font-weight:500;white-space:nowrap;transition:color .25s,border-color .25s}
.nav-link:hover{color:#fff}
.nav-link.active{color:#fff;border-bottom-color:var(--cyan)}
.nav-link.home-link{display:none}
.menu-toggle{display:none;width:38px;height:38px;border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--text);align-items:center;justify-content:center;cursor:pointer}
.menu-toggle:hover{color:var(--cyan);border-color:rgba(37,228,255,.35)}

/* ===== Hero ===== */
.hero-section{background:linear-gradient(180deg,rgba(7,17,31,.55),rgba(7,17,31,.82)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;padding:72px 0 64px;position:relative;border-bottom:1px solid rgba(255,255,255,.05)}
.hero-grid{position:relative;z-index:2;display:flex;align-items:center;gap:60px}
.hero-content{flex:1 1 56%;max-width:650px}
.hero-sub-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:999px;background:rgba(37,228,255,.08);border:1px solid rgba(37,228,255,.25);font-size:13px;color:var(--text-2);margin-bottom:20px}
.hero-sub-badge i{color:var(--green);font-size:8px}
.hero-title{font-size:46px;line-height:1.22;font-weight:760;margin:0 0 18px;letter-spacing:-.02em;color:#fff}
.hero-sub{font-size:17px;color:var(--text-2);line-height:1.75;max-width:580px;margin:0 0 32px}
.hero-cta{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:52px}
.btn-primary,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 25px;border-radius:8px;font-size:15px;font-weight:600;transition:all .25s var(--ease)}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--cyan));color:#fff;box-shadow:var(--shadow-cyan)}
.btn-primary:hover{color:#fff;box-shadow:var(--shadow-cyan-hover);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(37,228,255,.3),0 2px 10px rgba(37,228,255,.2)}
.btn-ghost{border:1px solid var(--line-strong);color:#fff;background:rgba(255,255,255,.04)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(37,228,255,.06)}
.hero-stats{display:flex;gap:44px}
.stat-card strong{font-size:26px;font-weight:720;color:#fff;display:block;letter-spacing:.02em}
.stat-card span{font-size:13px;color:var(--text-3)}
.hero-visual{flex:0 0 44%;max-width:520px}
.hero-visual-card{overflow:hidden;padding:16px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.06);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-radius:var(--radius-hero)}
.visual-topbar{display:flex;align-items:center;justify-content:space-between;padding-bottom:12px}
.visual-label{font-size:13px;color:var(--text-2);display:flex;align-items:center;gap:8px;letter-spacing:.08em}
.live-dot{width:8px;height:8px;border-radius:50%;background:var(--danger);box-shadow:0 0 0 0 rgba(255,74,106,.6);animation:pulse 1.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,74,106,.5)}100%{box-shadow:0 0 0 10px rgba(255,74,106,0)}}
.visual-topbar .icon-btn{width:30px;height:30px;font-size:12px}
.visual-screen{position:relative;border-radius:12px;overflow:hidden;aspect-ratio:16/10;background:#050B14}
.visual-screen img{width:100%;height:100%;object-fit:cover}
.screen-mask{position:absolute;inset:0;background:rgba(7,17,31,.2);display:flex;align-items:center;justify-content:center}
.screen-play{width:58px;height:58px;border-radius:50%;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);display:flex;align-items:center;justify-content:center;color:#fff;font-size:19px;backdrop-filter:blur(8px)}
.visual-footer{display:flex;gap:10px;padding-top:13px}
.visual-footer span{font-size:12px;color:var(--text-2);padding:4px 12px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.07)}

/* ===== Section base ===== */
.section-block{padding:96px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-title{font-size:32px;font-weight:720;line-height:1.3;color:#fff;margin:0 0 8px;letter-spacing:.01em}
.section-desc{color:var(--text-2);font-size:15px;max-width:640px}
.section-more{font-size:14px;display:inline-flex;align-items:center;gap:6px;color:var(--cyan);flex:0 0 auto;white-space:nowrap}
.section-more i{transition:transform .25s var(--ease)}
.section-more:hover i{transform:translateX(4px)}
.sub-label{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--cyan);font-weight:600;margin-bottom:14px}
.sub-label::before{content:"";width:28px;height:2px;background:linear-gradient(90deg,var(--cyan),transparent);border-radius:2px}

/* ===== Services ===== */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:28px 22px 22px;transition:transform .35s var(--ease),border-color .3s,background .3s;overflow:hidden}
.service-card:hover{transform:translateY(-3px);border-color:rgba(37,228,255,.45);background:rgba(255,255,255,.07)}
.service-card.featured-card{grid-column:span 2;background:linear-gradient(135deg,rgba(43,140,255,.10),rgba(37,228,255,.04)) ,var(--panel);border-color:rgba(37,228,255,.26)}
.service-card.featured-card::before{content:"";position:absolute;top:-30px;right:-20px;width:160px;height:160px;background:url('/assets/images/coverpic/cover-2.png') center/cover no-repeat;opacity:.06;pointer-events:none;transform:rotate(10deg);border-radius:24px}
.feature-badge{position:absolute;top:14px;right:14px;font-size:12px;padding:3px 12px;border-radius:999px;background:rgba(37,228,255,.12);color:var(--cyan);border:1px solid rgba(37,228,255,.24)}
.card-icon{width:48px;height:48px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:21px;color:#fff;background:linear-gradient(135deg,var(--brand),var(--cyan));margin-bottom:20px;box-shadow:0 6px 18px rgba(43,140,255,.18)}
.service-card:nth-child(3n+2) .card-icon{background:linear-gradient(135deg,#2B8CFF,#3F6BFF)}
.service-card h3{font-size:19px;color:#fff;margin:0 0 13px;font-weight:660}
.service-card p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0 0 20px;min-height:79px}
.card-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;font-size:12px;border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.03)}
.tag.tag-live{border-color:rgba(255,74,106,.4);color:#FF7C92;background:rgba(255,74,106,.08)}
.card-link{font-size:14px;display:inline-flex;align-items:center;gap:6px;color:var(--cyan);font-weight:600}
.card-link i{transition:transform .25s var(--ease)}
.card-link:hover i{transform:translateX(4px)}

/* ===== News ===== */
.news-block{background:rgba(3,10,18,.25);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.news-wrap{display:flex;align-items:flex-start;gap:40px}
.news-main{flex:1 1 68%;min-width:0}
.news-main{display:grid;gap:20px;grid-template-columns:1fr 1fr}
.news-item{display:flex;gap:20px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:18px;transition:border-color .3s,transform .3s var(--ease)}
.news-item:hover{border-color:rgba(37,228,255,.4);transform:translateY(-2px)}
.news-thumb-wrap{position:relative;flex:0 0 156px;width:156px;aspect-ratio:4/3;border-radius:8px;overflow:hidden;align-self:flex-start}
.news-thumb-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.news-item:hover img{transform:scale(1.04)}
.news-cat-tag{position:absolute;top:8px;left:8px;z-index:2;font-size:11px;color:#fff;background:rgba(11,26,46,.85);padding:2px 10px;border-radius:999px;border:1px solid rgba(255,255,255,.2)}
.news-info{min-width:0;display:flex;flex-direction:column}
.news-info h3{font-size:16px;line-height:1.55;color:var(--text);margin:0 0 10px;font-weight:620;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-info h3 a{color:var(--text)}
.news-info h3 a:hover{color:var(--cyan)}
.news-excerpt{font-size:13px;line-height:1.65;color:var(--text-2);margin:0 0 14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;flex-wrap:wrap;gap:8px 14px;margin-top:auto;font-size:12px;color:var(--text-3)}
.news-meta a{color:var(--cyan);font-size:13px}
.news-side{flex:0 0 32%;max-width:348px;position:sticky;top:140px}
.side-filter-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 22px;margin-bottom:20px}
.side-filter-card h4,.side-guide-card h4{font-size:16px;color:#fff;margin:0 0 16px;font-weight:640}
.filter-list{display:flex;flex-wrap:wrap;gap:8px}
.filter-list a{font-size:13px;padding:5px 14px;border-radius:999px;border:1px solid var(--line);color:var(--text-2);transition:all .25s}
.filter-list a:hover,.filter-list a.active{border-color:var(--cyan);color:var(--cyan)}
.side-guide-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;overflow:hidden}
.side-guide-cover{border-radius:8px;overflow:hidden;margin-bottom:16px;aspect-ratio:16/9}
.side-guide-cover img{width:100%;height:100%;object-fit:cover}
.side-guide-card p{font-size:13px;color:var(--text-2);margin:0 0 10px}
.side-guide-card a{font-size:14px;font-weight:600;color:var(--cyan)}
.empty-state{border:1px dashed var(--line-strong);border-radius:var(--radius-card);padding:60px 20px;text-align:center;color:var(--text-3);background:rgba(255,255,255,.02);position:relative;grid-column:1/-1}
.empty-state i{display:block;font-size:34px;margin-bottom:12px;color:var(--text-3);opacity:.6}
.empty-state span{font-size:14px;letter-spacing:.05em}

/* ===== Testimonials ===== */
.testimonial-viewport{overflow:hidden}
.testimonial-track{display:flex;gap:24px;transition:transform .45s var(--ease);will-change:transform}
.t-card{flex:0 0 calc((100% - 48px)/3);min-width:0;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-card);padding:26px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);display:flex;flex-direction:column}
.t-card .quote-icon{font-size:26px;color:rgba(37,228,255,.45);margin-bottom:12px}
.t-card blockquote{margin:0 0 28px;font-size:14px;line-height:1.85;color:var(--text-2);display:flex;flex-direction:column;gap:12px;font-style:normal}
.t-client{border-top:1px solid rgba(255,255,255,.08);padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.client-id strong{display:block;font-size:15px;color:#fff;font-weight:600}
.client-id span{font-size:13px;color:var(--text-3)}
.client-type{font-size:12px;padding:3px 12px;border-radius:999px;background:rgba(37,228,255,.08);border:1px solid rgba(37,228,255,.22);color:var(--cyan);white-space:nowrap}
.testi-controls{display:flex;align-items:center;justify-content:space-between;margin-top:32px}
.t-arrows{display:flex;gap:10px}
.t-arrow{width:42px;height:42px;border-radius:50%;border:1px solid var(--line-strong);background:rgba(255,255,255,.05);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .25s}
.t-arrow:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}
.t-dots{display:flex;gap:8px;align-items:center}
.dot{width:8px;height:8px;border-radius:50%;background:var(--text-3);cursor:pointer;transition:all .25s}
.dot.active{background:var(--cyan);width:24px;border-radius:99px}

/* ===== Guarantee strip ===== */
.guarantee-strip{background:rgba(4,12,22,.4);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.guarantee-list{display:grid;grid-template-columns:repeat(5,1fr);gap:0;align-items:center}
.guarantee-list .g-item{padding:30px 26px;text-align:center;border-left:1px solid rgba(255,255,255,.06);display:flex;flex-direction:column;gap:8px;align-items:center}
.guarantee-list .g-item:first-child{border-left:0}
.g-item i{font-size:32px;color:var(--green);position:relative}
.g-item i::after{content:"";position:absolute;bottom:1px;right:-5px;width:8px;height:8px;background:var(--green);border-radius:50%;box-shadow:0 0 0 3px rgba(63,224,180,.2)}
.g-item strong{font-size:16px;color:var(--text);font-weight:600;letter-spacing:.03em}
.g-item span{font-size:13px;color:var(--text-3)}

/* ===== FAQ ===== */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-card);background:rgba(255,255,255,.03);transition:border-color .3s}
.faq-item.active{border-color:rgba(37,228,255,.4)}
.faq-q{margin:0}
.faq-q button{width:100%;background:transparent;border:0;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 22px;text-align:left;font-size:15px;font-weight:600;color:var(--text);cursor:pointer;border-radius:var(--radius-card)}
.faq-q button .fx{width:26px;height:26px;flex:0 0 26px;border-radius:50%;border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--text-3);transition:all .2s var(--ease)}
.faq-item.active .fx{transform:rotate(45deg);background:var(--cyan);border-color:var(--cyan);color:#07111F}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s var(--ease)}
.faq-a p{margin:0;padding:0 22px 20px;font-size:14px;color:var(--text-2);line-height:1.8}
.faq-item.active .faq-a{max-height:420px}
.faq-cta{margin-top:26px;grid-column:1/-1;text-align:center;font-size:14px;color:var(--text-3)}
.faq-cta a{font-weight:600}

/* ===== Contact CTA ===== */
.contact-section{position:relative;background:linear-gradient(180deg,rgba(7,17,31,.6),rgba(7,17,31,.9)) ,url('/assets/images/backpic/back-2.png') center/cover no-repeat}
.contact-section::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(37,228,255,.6),transparent)}
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:64px;align-items:start;position:relative;z-index:2}
.contact-head h2{font-size:34px;margin:0 0 18px;color:#fff;font-weight:720}
.contact-head p{color:var(--text-2);font-size:15px;max-width:500px;margin-bottom:26px}
.contact-points{display:grid;gap:20px;margin-top:34px}
.contact-point{display:flex;gap:16px;align-items:flex-start}
.contact-point .cp-ic{width:42px;height:42px;flex:0 0 42px;border-radius:10px;border:1px solid rgba(37,228,255,.25);background:rgba(37,228,255,.08);display:flex;align-items:center;justify-content:center;color:var(--cyan);font-size:17px}
.contact-point strong{display:block;color:#fff;font-size:15px;font-weight:600}
.contact-point span{font-size:13px;color:var(--text-2)}
.form-card{background:rgba(255,255,255,.07);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-hero);padding:34px}
.form-card h3{font-size:21px;color:#fff;margin:0 0 8px;font-weight:680}
.form-card>p{font-size:14px;color:var(--text-2);margin-top:0;margin-bottom:24px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:6px}
.form-field label em{color:var(--danger);font-style:normal}
.form-field input,.form-field select,.form-field textarea{width:100%;height:44px;border:1px solid var(--line);border-bottom:2px solid var(--line-strong);background:rgba(7,17,31,.6);color:var(--text);padding:0 16px;border-radius:var(--radius-sm);transition:border-color .3s,box-shadow .3s;outline:none}
.form-field textarea{height:110px;padding:14px 16px;resize:vertical}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--text-3);opacity:.85}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(37,228,255,.10)}
.form-field select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23677F9E' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:14px;padding-right:40px}
.form-field.full{grid-column:1/-1}
.form-note{font-size:12px;color:var(--text-3);text-align:right;margin:6px 0 0}
.form-submit-row{grid-column:1/-1;display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:6px}
.btn-submit{height:46px;min-width:180px;border-radius:8px;border:0;background:linear-gradient(135deg,var(--brand),var(--cyan));color:#fff;font-weight:600;cursor:pointer;box-shadow:var(--shadow-cyan);transition:all .25s var(--ease)}
.btn-submit:hover{box-shadow:var(--shadow-cyan-hover);transform:translateY(-2px)}
.btn-submit:active{transform:translateY(1px)}
.form-tip{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:8px}
.form-tip i{color:var(--green)}
.form-success{margin:16px 0 0;padding:14px 16px;border-radius:8px;background:rgba(63,224,180,.1);border:1px solid rgba(63,224,180,.3);color:var(--green);font-size:14px;display:none}
.form-success.show{display:block}

/* ===== Footer ===== */
.site-footer{background:var(--bg-deep);border-top:1px solid rgba(255,255,255,.07)}
.footer-top{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.3fr;gap:46px;padding-top:68px;padding-bottom:52px}
.footer-brand p{font-size:14px;color:var(--text-2);margin:18px 0 0;max-width:300px;line-height:1.8}
.footer-col h5{font-size:15px;color:#fff;font-weight:600;letter-spacing:.06em;margin:0 0 18px}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.footer-col ul a{color:var(--text-2);font-size:14px}
.footer-col ul a:hover{color:var(--cyan);padding-left:4px}
.footer-col ul a i{font-size:12px;margin-right:8px;color:var(--text-3)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;padding-top:22px;padding-bottom:28px;border-top:1px solid rgba(255,255,255,.05);font-size:13px;color:var(--text-3)}
.footer-bottom .domain-link{color:var(--text-3)}
.footer-bottom-inner{max-width:1200px;margin:0 auto;padding:0 30px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ===== Responsive ===== */
@media screen and (max-width:1023px){
  .container{padding:0 24px}
  .section-block{padding:72px 0}
  .hero-grid{gap:40px;flex-direction:column}
  .hero-content{flex:1 1 auto;max-width:100%}
  .hero-visual{flex:0 0 auto;max-width:100%;width:100%}
  .hero-title{font-size:36px}
  .channel-row{display:none;position:absolute;top:calc(100% + 1px);left:0;right:0;background:rgba(7,17,31,.98);border-bottom:1px solid var(--line);padding:18px 24px;flex-direction:column;align-items:flex-start;gap:18px;opacity:0;pointer-events:none;transform:translateY(-8px);transition:all .22s var(--ease);margin-top:0}
  .site-header.scrolled .channel-row{margin-top:0;opacity:0;pointer-events:none}
  .channel-row.open{display:flex;opacity:1;pointer-events:auto;transform:translateY(0)}
  .menu-toggle{display:inline-flex}
  .channel-nav{flex-direction:column;align-items:flex-start;gap:2px;width:100%;order:1;border-bottom:1px solid rgba(255,255,255,.06);padding-bottom:8px;margin-bottom:6px}
  .nav-link{font-size:15px;padding:7px 0;width:100%}
  .site-header.scrolled .channel-row{display:flex}
  .site-header.scrolled .channel-row{top:calc(100% + 1px)}
  .hot-tags{order:2;flex-wrap:wrap}
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .news-wrap{flex-direction:column}
  .news-side{flex:1 1 auto;max-width:100%;width:100%;position:static}
  .guarantee-list{grid-template-columns:repeat(3,1fr)}
  .guarantee-list .g-item{border-left:0;border-bottom:1px solid rgba(255,255,255,.06)}
  .testimonial-track .t-card{flex-basis:calc((100% - 24px)/2)}
  .contact-grid{grid-template-columns:1fr;gap:48px}
  .faq-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr 1fr;gap:40px}
  .footer-brand{grid-column:1/-1;max-width:520px}
  .news-item{flex-direction:column}
  .news-thumb-wrap{width:100%;flex:0 0 auto;aspect-ratio:16/9}
}
@media screen and (max-width:639px){
  .container{padding:0 16px}
  .section-block{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .hero-section{padding:52px 0 44px}
  .hero-title{font-size:30px}
  .hero-sub{font-size:16px}
  .hero-stats{gap:26px;flex-wrap:wrap}
  .brand-tools .hot-tags{display:none}
  .brand-row{min-height:60px}
  .brand-text strong{font-size:20px}
  .search-input-wrap.open input{width:46vw;max-width:200px}
  .section-title{font-size:25px}
  .services-grid{grid-template-columns:1fr}
  .service-card.featured-card{grid-column:auto}
  .service-card p{min-height:0}
  .news-main{grid-template-columns:1fr}
  .guarantee-list{grid-template-columns:1fr}
  .guarantee-list .g-item{border-bottom:1px solid rgba(255,255,255,.06)}
  .guarantee-list .g-item:last-child{border-bottom:0}
  .testimonial-track .t-card{flex-basis:100%;padding:22px}
  .testi-controls{margin-top:24px}
  .form-grid{grid-template-columns:1fr}
  .btn-submit{width:100%}
  .form-note{text-align:left}
  .form-card{padding:24px 20px}
  .footer-top{grid-template-columns:1fr;gap:32px;padding-top:48px;padding-bottom:36px}
  .footer-bottom-inner{padding:0 16px;flex-direction:column;text-align:center}
  .footer-bottom{align-items:center;justify-content:center;text-align:center}
  .t-card blockquote{font-size:14px}
}

/* roulang page: article */
:root{
  --pj-bg:#07111F;
  --pj-bg2:#0B1A2E;
  --pj-panel:#101F33;
  --pj-panel2:#0D192A;
  --pj-blue:#2B8CFF;
  --pj-cyan:#25E4FF;
  --pj-green:#3FE0B4;
  --pj-red:#FF4A6A;
  --pj-text:#EAF2FF;
  --pj-text2:#9FB3D1;
  --pj-muted:#677F9E;
  --pj-border:rgba(255,255,255,.10);
  --pj-r-lg:18px;
  --pj-r-md:12px;
  --pj-r-sm:8px;
  --pj-trans:all .25s ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--pj-bg);
  color:var(--pj-text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background:
    radial-gradient(circle at 12% 0%, rgba(37,228,255,.08), transparent 620px),
    radial-gradient(circle at 88% 18%, rgba(43,140,255,.09), transparent 640px),
    linear-gradient(180deg,#07111F 0%,#081524 42%,#0B1A2E 100%);
}
img{max-width:100%;height:auto;display:block}
a{color:var(--pj-cyan);text-decoration:none;transition:var(--pj-trans)}
a:hover{color:#7AF0FF;text-shadow:0 0 12px rgba(37,228,255,.25)}
p{color:var(--pj-text2)}
ul,ol{margin:0;padding:0}
button,input,select,textarea{font-family:inherit;font-size:16px}
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,a:focus-visible{outline:2px solid var(--pj-cyan);outline-offset:2px}
.container{max-width:1280px;margin:0 auto;padding-left:32px;padding-right:32px}
#news,#faq,#contact{scroll-margin-top:150px}

/* header */
.main-header{
  position:sticky;
  top:0;
  z-index:1001;
  background:rgba(7,17,31,.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:var(--pj-trans);
}
.main-header.is-scrolled{
  background:rgba(7,16,29,.90);
  box-shadow:0 12px 30px rgba(0,0,0,.28);
}
.brand-row{border-bottom:1px solid rgba(255,255,255,.05);transition:var(--pj-trans)}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
  transition:height .25s ease;
}
.main-header.is-scrolled .header-inner{height:56px}
.brand-logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo-mark{
  width:44px;height:44px;
  background:linear-gradient(135deg,var(--pj-blue),var(--pj-cyan));
  color:#fff;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;
  box-shadow:0 0 0 1px rgba(37,228,255,.25),0 6px 18px rgba(37,228,255,.18);
}
.main-header.is-scrolled .logo-mark{width:38px;height:38px;font-size:18px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:22px;font-weight:800;letter-spacing:.02em;color:var(--pj-text)}
.brand-text small{font-size:10px;letter-spacing:.16em;color:var(--pj-muted);margin-top:4px}
.header-mid{display:flex;align-items:center;gap:22px;flex:1;justify-content:flex-end}
.header-search{
  display:flex;
  align-items:center;
  background:rgba(255,255,255,.06);
  border:1px solid var(--pj-border);
  border-radius:999px;
  padding:5px 6px 5px 16px;
  width:min(360px,36vw);
  transition:var(--pj-trans);
}
.header-search:focus-within{border-color:rgba(37,228,255,.55);box-shadow:0 0 0 4px rgba(37,228,255,.08)}
.header-search i{color:var(--pj-text2);margin-right:6px}
.header-search input{
  flex:1;
  border:0;
  background:transparent;
  color:var(--pj-text);
  padding:4px 0;
  min-width:0;
}
.header-search input::placeholder{color:var(--pj-muted)}
.header-search input:focus{outline:none}
.search-submit{
  background:linear-gradient(90deg,var(--pj-blue),var(--pj-cyan));
  border:0;
  color:#fff;
  height:34px;
  padding:0 18px;
  border-radius:999px;
  font-weight:600;
  cursor:pointer;
  transition:var(--pj-trans);
}
.search-submit:hover{box-shadow:0 0 18px rgba(37,228,255,.35)}
.trend-links{display:flex;align-items:center;gap:6px}
.trend-label{
  font-size:13px;
  color:var(--pj-muted);
  border:1px solid rgba(37,228,255,.22);
  padding:3px 12px;
  border-radius:999px;
  white-space:nowrap;
}
.trend-links a{
  color:var(--pj-text2);
  font-size:13px;
  border:1px solid transparent;
  padding:4px 10px;
  border-radius:999px;
  transition:var(--pj-trans);
}
.trend-links a:hover{color:var(--pj-cyan);border-color:rgba(37,228,255,.35);background:rgba(37,228,255,.06)}
.channel-row{
  background:rgba(9,21,38,.52);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.04);
}
.channel-inner{display:flex;align-items:center;justify-content:space-between;min-height:52px}
.channel-nav{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  color:var(--pj-text2);
  font-weight:600;
  font-size:16px;
  padding:16px 0 13px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--pj-blue),var(--pj-cyan));
  opacity:0;
  transform:scaleX(.35);
  transition:var(--pj-trans);
}
.nav-link:hover{color:var(--pj-cyan)}
.nav-link:hover::after{opacity:.75;transform:scaleX(.85)}
.nav-link.active{color:#fff}
.nav-link.active::after{opacity:1;transform:scaleX(1)}
.channel-hot{display:flex;align-items:center;gap:6px}
.channel-hot a{font-size:13px;color:var(--pj-text2);padding:5px 12px;border-radius:999px;background:rgba(255,255,255,.05);transition:var(--pj-trans)}
.channel-hot a:hover{color:var(--pj-cyan);background:rgba(37,228,255,.1)}
.mobile-menu{display:none;background:rgba(255,255,255,.06);border:1px solid var(--pj-border);color:var(--pj-text);font-size:18px;width:44px;height:44px;border-radius:10px;cursor:pointer}
.mobile-nav-drawer{display:none;padding:10px 20px 22px;border-top:1px solid rgba(255,255,255,.06);background:rgba(7,17,31,.96)}
.mobile-nav-drawer.open{display:block}
.mobile-nav-drawer a{display:block;padding:12px 14px;border-radius:8px;color:var(--pj-text);font-weight:600}
.mobile-nav-drawer a:hover{background:rgba(37,228,255,.08)}
.mobile-search{margin-bottom:12px}
.mobile-trend{display:flex;gap:8px;flex-wrap:wrap;padding:12px 8px 0}
.mobile-trend a{border:1px solid var(--pj-border);background:transparent;padding:8px 14px!important;border-radius:999px;font-weight:400!important;font-size:13px!important;width:auto}

/* article stage */
.article-stage{
  padding:52px 0 42px;
  background:
    linear-gradient(120deg,rgba(7,17,31,.88),rgba(13,26,46,.88)),
    url('/assets/images/backpic/back-1.png') center 22% / cover no-repeat;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  color:var(--pj-muted);
  font-size:14px;
  margin-bottom:24px;
}
.breadcrumb a{color:var(--pj-text2)}
.breadcrumb a:hover{color:var(--pj-cyan)}
.breadcrumb i{font-size:12px;color:var(--pj-muted)}
.breadcrumb span.current{color:var(--pj-text)}
.article-major{
  max-width:940px;
}
.article-major .section-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  border:1px solid rgba(37,228,255,.25);
  color:var(--pj-cyan);
  background:rgba(37,228,255,.06);
  padding:5px 16px;
  border-radius:999px;
  font-size:13px;
  margin-bottom:18px;
}
.article-major h1{
  font-size:42px;
  line-height:1.24;
  letter-spacing:-.02em;
  font-weight:880;
  color:#fff;
  margin:0 0 20px;
}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:20px;
  color:var(--pj-text2);
  font-size:14px;
}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--pj-cyan);font-size:13px}
.article-meta .author{color:#fff}

/* layout */
.article-layout{
  padding-top:46px;
  padding-bottom:74px;
  display:grid;
  grid-template-columns:minmax(0,1fr) 340px;
  grid-gap:44px;
  align-items:start;
}
.post-panel{
  background:rgba(255,255,255,.055);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--pj-border);
  border-radius:var(--pj-r-lg);
  padding:44px 42px;
  box-shadow:0 18px 40px rgba(0,0,0,.14);
}
.article-content{
  max-width:790px;
  margin:0 auto;
  font-size:16px;
  line-height:1.95;
  color:var(--pj-text2);
  word-break:break-word;
}
.article-content p{margin:0 0 22px;line-height:1.95;color:var(--pj-text2)}
.article-content h2{
  font-size:26px;
  font-weight:800;
  color:#fff;
  line-height:1.4;
  margin:40px 0 18px;
  padding-left:16px;
  border-left:4px solid var(--pj-cyan);
}
.article-content h3{
  font-size:21px;
  font-weight:700;
  color:#fff;
  margin:34px 0 14px;
}
.article-content ul,.article-content ol{
  margin:0 0 24px 22px;
  color:var(--pj-text2);
}
.article-content li{margin-bottom:10px}
.article-content img{border-radius:var(--pj-r-md);margin:30px 0;width:100%;height:auto;border:1px solid var(--pj-border)}
.article-content blockquote{
  margin:28px 0;
  background:rgba(37,228,255,.06);
  border-left:4px solid var(--pj-cyan);
  padding:18px 22px;
  color:#E5F7FF;
  border-radius:0 14px 14px 0;
}
.article-content a{text-decoration:underline;text-underline-offset:4px}
.article-content pre{
  background:#081525;
  border:1px solid var(--pj-border);
  border-radius:12px;
  padding:20px;
  overflow:auto;
  color:#d6e7ff;
}
.empty-post{
  text-align:center;
  padding:60px 24px;
  border:1px dashed var(--pj-border);
  border-radius:var(--pj-r-lg);
}
.empty-post i{font-size:44px;color:var(--pj-muted);margin-bottom:14px;display:inline-block}
.empty-post h2{color:#fff;font-size:20px;margin-bottom:8px}
.empty-post p{color:var(--pj-muted);margin-bottom:24px}
.article-footer-links{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  margin-top:44px;
  padding-top:28px;
  border-top:1px solid var(--pj-border);
}
.article-column-back{color:var(--pj-text2);font-size:15px;font-weight:500}
.article-column-back i{margin-right:6px}
.article-footer-actions{display:flex;gap:12px;flex-wrap:wrap}

/* side */
.article-aside{
  position:sticky;
  top:142px;
  display:flex;
  flex-direction:column;
  gap:24px;
}
.side-card{
  background:rgba(13,26,46,.88);
  border:1px solid var(--pj-border);
  border-radius:16px;
  padding:24px;
}
.side-card h5,.side-card h3{
  font-size:16px;
  font-weight:800;
  color:#fff;
  margin:0 0 16px;
  padding-left:12px;
  border-left:3px solid var(--pj-cyan);
}
.toc-list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:4px;
}
.toc-list li{border-left:2px solid transparent;transition:var(--pj-trans)}
.toc-list li.toc-h2{padding-left:10px}
.toc-list li.toc-h3{padding-left:22px}
.toc-list a{
  display:block;
  color:var(--pj-text2);
  font-size:14px;
  line-height:1.55;
  padding:6px 8px;
  border-radius:6px;
}
.toc-list a:hover{color:var(--pj-cyan);background:rgba(37,228,255,.06)}
.side-tag-list{display:flex;flex-wrap:wrap;gap:8px}
.side-tag-list a{
  color:var(--pj-text2);
  font-size:13px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--pj-border);
  padding:5px 14px;
  border-radius:999px;
}
.side-tag-list a:hover{color:var(--pj-cyan);border-color:rgba(37,228,255,.45)}
.side-card-description{margin-top:14px;color:var(--pj-muted);font-size:14px;line-height:1.8}
.side-link{display:flex;align-items:center;justify-content:space-between;color:var(--pj-text2);padding:10px 12px;border-radius:10px;background:rgba(255,255,255,.04);margin-bottom:8px;font-size:15px}
.side-link i{color:var(--pj-cyan);font-size:13px}
.side-link:hover{background:rgba(37,228,255,.08);color:#fff}

/* btn */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 24px;
  font-size:15px;
  font-weight:600;
  border-radius:999px;
  cursor:pointer;
  transition:var(--pj-trans);
  border:0;
  line-height:1;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(90deg,var(--pj-blue),var(--pj-cyan));
  color:#fff;
  box-shadow:0 0 0 1px rgba(37,228,255,.25),0 4px 24px rgba(37,228,255,.25);
}
.btn-primary:hover{
  background:linear-gradient(90deg,#4099FF,#54E7FA);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 6px 32px rgba(37,228,255,.45);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 2px 12px rgba(37,228,255,.3)}
.btn-ghost{
  background:transparent;
  color:#EAF2FF;
  border:1px solid rgba(255,255,255,.18);
}
.btn-ghost:hover{border-color:rgba(37,228,255,.55);color:var(--pj-cyan)}
.btn-cta{min-width:180px}

/* related */
.related-section{padding:74px 0 76px;background:rgba(9,20,35,.5);border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05)}
.section-title-row{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:28px;gap:16px}
.section-title-row h2{font-size:30px;font-weight:880;margin:0;line-height:1.25}
.section-title-row p{margin:8px 0 0;color:var(--pj-muted)}
.section-link{font-size:14px;color:var(--pj-text2);font-weight:600;display:inline-flex;gap:8px;align-items:center}
.section-link i{transition:transform .25s ease}
.section-link:hover{color:var(--pj-cyan)}
.section-link:hover i{transform:translateX(4px)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{
  background:var(--pj-panel);
  border:1px solid var(--pj-border);
  border-radius:16px;
  overflow:hidden;
  transition:var(--pj-trans);
}
.news-card:hover{border-color:rgba(37,228,255,.45);transform:translateY(-3px);background:var(--pj-panel2)}
.news-card-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0D1A2E}
.news-card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-card-thumb img{transform:scale(1.04)}
.news-tag{
  position:absolute;
  top:12px;left:12px;
  z-index:2;
  background:rgba(4,13,25,.72);
  backdrop-filter:blur(8px);
  color:var(--pj-cyan);
  border:1px solid rgba(37,228,255,.35);
  border-radius:999px;
  font-size:12px;
  padding:4px 12px;
}
.news-card-content{padding:20px 22px 24px}
.news-card-content h3{margin:0 0 10px;font-size:18px;line-height:1.5;font-weight:700}
.news-card-content h3 a{color:#fff}
.news-card-content h3 a:hover{color:var(--pj-cyan)}
.news-card-content p{margin:0;color:var(--pj-text2);font-size:14px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:10px;color:var(--pj-muted);font-size:13px;margin-bottom:14px}
.news-meta i{color:var(--pj-cyan);font-size:11px}
.recommend-site{margin-top:12px;padding-top:14px;border-top:1px solid rgba(255,255,255,.06);color:var(--pj-muted);font-size:13px}

/* guarantee */
.guarantee-strip{
  padding:26px 0;
  border-bottom:1px solid rgba(255,255,255,.06);
  background:rgba(11,26,46,.5);
}
.guarantee-grid{display:flex;justify-content:space-between;gap:26px}
.guarantee-item{display:flex;align-items:center;gap:14px;min-width:0;flex:1}
.guarantee-icon{
  width:46px;height:46px;
  border-radius:12px;
  background:rgba(63,224,180,.08);
  color:var(--pj-green);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
  font-size:20px;
  border:1px solid rgba(63,224,180,.18);
}
.guarantee-text b{display:block;color:#fff;font-size:16px}
.guarantee-text span{font-size:13px;color:var(--pj-muted)}
.guarantee-line{width:1px;background:rgba(255,255,255,.08);align-self:stretch}
.guarantee-dot{display:inline-block;width:6px;height:6px;background:var(--pj-green);border-radius:50%;margin-right:8px;box-shadow:0 0 8px var(--pj-green)}

/* faq */
.faq-section{padding:80px 0}
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  background:var(--pj-panel);
  border:1px solid var(--pj-border);
  border-radius:14px;
  margin-bottom:16px;
  transition:var(--pj-trans);
  overflow:hidden;
}
.faq-item:hover{border-color:rgba(255,255,255,.18)}
.faq-item.active{border-color:rgba(37,228,255,.42);box-shadow:0 8px 24px rgba(0,0,0,.16)}
.faq-question{
  width:100%;
  background:transparent;
  border:0;
  color:var(--pj-text);
  padding:18px 22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:16px;
  font-weight:700;
  text-align:left;
  cursor:pointer;
  gap:16px;
}
.faq-question .icon{
  width:30px;height:30px;
  min-width:30px;
  border-radius:50%;
  border:1px solid var(--pj-border);
  color:var(--pj-cyan);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:rgba(37,228,255,.06);
  transform:rotate(0deg);
  transition:transform .2s ease;
}
.faq-item.active .faq-question .icon{background:rgba(37,228,255,.15);border-color:rgba(37,228,255,.5)}
.faq-item.active .faq-question .icon{transform:rotate(90deg)}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
  padding:0 22px;
  color:var(--pj-text2);
  font-size:15px;
  line-height:1.8;
}
.faq-item.active .faq-answer{max-height:760px;padding:0 22px 22px}

/* cta */
.cta-block{
  position:relative;
  padding:78px 0;
  background:
    linear-gradient(105deg,rgba(7,17,31,.92),rgba(8,23,44,.95)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-top:1px solid rgba(37,228,255,.12);
  border-bottom:1px solid rgba(255,255,255,.04);
  overflow:hidden;
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.cta-left h2{font-size:32px;color:#fff;margin:0 0 12px;font-weight:880;line-height:1.3}
.cta-left p{color:var(--pj-text2);margin:0 0 26px;font-size:16px}
.cta-points{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:0 0 26px}
.cta-points li{color:#EAF2FF;display:flex;align-items:center;gap:10px}
.cta-points i{width:20px;height:20px;min-width:20px;border-radius:50%;background:rgba(63,224,180,.15);color:var(--pj-green);display:flex;align-items:center;justify-content:center;font-size:11px}
.cta-note{color:var(--pj-muted);font-size:13px;margin:0}
.cta-note i{color:var(--pj-green);margin-right:6px}
.form-card{
  background:rgba(255,255,255,.07);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.14);
  border-radius:20px;
  padding:34px;
  box-shadow:0 18px 40px rgba(0,0,0,.2);
}
.form-card h3{color:#fff;font-size:21px;margin:0 0 6px}
.form-card .form-sub{color:var(--pj-muted);font-size:14px;margin-bottom:20px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-grid .field-full{grid-column:1/-1}
.form-label{display:block;font-size:14px;color:var(--pj-text2);margin-bottom:5px}
.form-label .required{color:var(--pj-red);margin-left:2px}
.form-input,.form-select,.form-textarea{
  width:100%;
  background:rgba(4,12,23,.55);
  border:1px solid rgba(255,255,255,.12);
  color:var(--pj-text);
  border-radius:9px;
  padding:11px 14px;
  transition:var(--pj-trans);
}
.form-input:focus,.form-select:focus,.form-textarea:focus{
  border-color:var(--pj-cyan);
  box-shadow:0 0 0 4px rgba(37,228,255,.08);
  outline:none;
}
.form-input::placeholder,.form-textarea::placeholder{color:var(--pj-muted);opacity:.8}
.form-select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--pj-muted) 50%),linear-gradient(135deg,var(--pj-muted) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 15px) 50%;background-size:5px 5px;background-repeat:no-repeat}
.form-textarea{min-height:90px;resize:vertical}
.form-success{display:none;background:rgba(63,224,180,.12);border:1px solid rgba(63,224,180,.3);border-radius:10px;color:#BCF6E4;font-size:14px;padding:14px 16px;margin-top:16px}
.form-success.show{display:block}
.btn-group{grid-column:1/-1;display:flex;justify-content:flex-end;gap:12px;margin-top:4px}

/* footer */
.site-footer{background:#050D18;border-top:1px solid rgba(255,255,255,.07)}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:58px 0 34px}
.footer-brand p{color:var(--pj-muted);font-size:14px;margin:22px 0 0;line-height:1.9}
.footer-col h5{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a{color:var(--pj-text2);font-size:14px;display:inline-flex;align-items:center;gap:6px}
.footer-col a i{font-size:11px;color:var(--pj-muted)}
.footer-col a:hover{color:var(--pj-cyan)}
.footer-col a:hover i{color:var(--pj-cyan);transform:translateX(3px)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.06);padding:18px 0}
.footer-bottom-flex{font-size:13px;color:var(--pj-muted)}
.footer-bottom-flex .domain-link{color:var(--pj-text2);letter-spacing:.04em;font-weight:500}
.footer-bottom-flex span{color:var(--pj-muted)}

@media (max-width:1023px){
  .container{padding-left:24px;padding-right:24px}
  .trend-links{display:none}
  .header-search{width:min(360px,44vw)}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-aside{position:static;grid-template-columns:1fr 1fr;display:grid}
  .side-card{height:100%}
  .related-grid{grid-template-columns:1fr 1fr}
  .cta-grid{grid-template-columns:1fr}
  .guarantee-grid{flex-wrap:wrap}
  .guarantee-item{flex:1 1 calc(33.333% - 20px)}
  .guarantee-line{display:none}
  .footer-top{grid-template-columns:1fr 1fr;column-gap:30px}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px}
  .header-search-wrap{display:none}
  .mobile-menu{display:inline-flex;align-items:center;justify-content:center}
  .channel-row{display:none}
  .brand-row{border-bottom:0}
  .header-inner{height:64px!important}
  .main-header.is-scrolled .header-inner{height:60px!important}
  .article-stage{padding:35px 0 30px}
  .article-major h1{font-size:32px;line-height:1.3}
  .article-meta{gap:12px;font-size:13px}
  .post-panel{padding:24px 18px;border-radius:15px}
  .article-content{line-height:1.85}
  .article-content h2{font-size:22px;padding-left:12px}
  .article-content h3{font-size:19px}
  .related-section{padding:52px 0}
  .section-title-row{flex-direction:column;align-items:flex-start;gap:8px}
  .section-title-row h2{font-size:24px}
  .related-grid{grid-template-columns:1fr}
  .guarantee-strip{padding:22px 0}
  .guarantee-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
  .guarantee-item{flex-direction:column;align-items:flex-start}
  .faq-section{padding:52px 0}
  .faq-wrap{padding:0}
  .cta-block{padding:52px 0}
  .cta-left h2{font-size:27px}
  .cta-points{grid-template-columns:1fr;gap:8px}
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:24px 18px}
  .btn-group{justify-content:center}
  .btn-group .btn{width:100%}
  .article-footer-links{flex-direction:column;align-items:flex-start}
  .article-footer-actions{width:100%;flex-direction:column}
  .article-footer-actions .btn{width:100%}
  .footer-top{grid-template-columns:1fr;text-align:left;padding:38px 0 18px}
  .footer-brand p{margin-top:14px}
  .section-link{display:none}
  .mobile-nav-drawer .channel-nav-m{display:flex;flex-direction:column;align-items:stretch}
  .channel-nav-m a{display:block;padding:13px 14px;font-size:16px;color:#fff}
}
@media (max-width:520px){
  .brand-logo .brand-text small{display:none}
  .brand-text strong{font-size:19px}
  .logo-mark{width:38px;height:38px;font-size:19px}
  .article-major h1{font-size:28px}
  .news-card-thumb img{height:auto}
  .btn{width:100%}
  .header-search-submit{width:auto}
}

/* roulang page: category1 */
:root{
  --bg-0:#07111F;
  --bg-1:#0B1A2E;
  --brand-blue:#2B8CFF;
  --brand-cyan:#25E4FF;
  --brand-green:#3FE0B4;
  --brand-red:#FF4A6A;
  --glass-50:rgba(255,255,255,0.05);
  --glass-70:rgba(255,255,255,0.07);
  --glass-90:rgba(255,255,255,0.09);
  --line:rgba(255,255,255,0.10);
  --line-strong:rgba(255,255,255,0.16);
  --text-main:#EAF2FF;
  --text-sub:#9FB3D1;
  --text-weak:#677F9E;
  --r-sm:6px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-glow:0 0 0 1px rgba(37,228,255,0.25), 0 4px 24px rgba(37,228,255,0.25);
  --shadow-glow-lg:0 0 0 1px rgba(37,228,255,0.35), 0 6px 32px rgba(37,228,255,0.45);
  --space-section:96px;
  --font-main:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-main);
  background:
    radial-gradient(900px 420px at 82% -80px, rgba(37,228,255,0.08), transparent 60%),
    radial-gradient(700px 360px at -10% 12%, rgba(43,140,255,0.07), transparent 60%),
    linear-gradient(180deg,var(--bg-0),var(--bg-1));
  background-attachment:fixed;
  color:var(--text-main);
  font-size:16px;
  line-height:1.7;
  overflow-x:hidden;
}
a{color:var(--brand-cyan);text-decoration:none;transition:color .2s ease}
a:hover{color:#7DF0FF}
img{max-width:100%;display:block}
button{font-family:inherit}
input,select,textarea{font-family:inherit}
.container{max-width:1280px;margin:0 auto;padding:0 32px}
.section{position:relative;padding:var(--space-section) 0}
body{--space-section-narrow:72px}
.section-narrow{padding:64px 0}
@media screen and (max-width:1023px){
  :root{--space-section:72px}
  .container{padding:0 24px}
}
@media screen and (max-width:639px){
  :root{--space-section:56px}
  .container{padding:0 16px}
  body{font-size:15px}
}
.section-head{max-width:760px;margin-bottom:38px}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 12px;border:1px solid rgba(37,228,255,0.28);
  border-radius:999px;background:rgba(37,228,255,0.06);
  color:var(--brand-cyan);font-size:13px;letter-spacing:.06em;font-weight:600;
}
.section-eyebrow i{font-size:12px}
.section-title{margin-top:14px;font-size:29px;font-weight:680;line-height:1.3;letter-spacing:.01em}
.section-desc{margin-top:10px;color:var(--text-sub);font-size:15px;line-height:1.8}
@media screen and (max-width:639px){
  .section-title{font-size:23px}
  .section-desc{font-size:14px}
}
.tags-row{display:flex;flex-wrap:wrap;gap:10px}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border:1px solid var(--line);
  border-radius:999px;background:var(--glass-50);
  color:var(--text-sub);font-size:13px;line-height:1.4;
}
.tag-pill i{color:var(--brand-cyan);font-size:11px}
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,17,31,0.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease, box-shadow .25s ease, height .25s ease;
}
.site-header.is-scrolled{
  background:rgba(8,15,26,0.92);
  box-shadow:0 12px 40px rgba(0,0,0,0.15);
}
.top-brand-row{position:relative;background:transparent;transition:min-height .2s ease}
.top-brand-row .container{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand-logo{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand-blue),var(--brand-cyan));
  color:#fff;font-size:17px;
  box-shadow:0 0 18px rgba(37,228,255,0.22);
}
.brand-text{display:flex;flex-direction:column;gap:1px;line-height:1.2}
.brand-text strong{font-size:20px;font-weight:800;letter-spacing:.01em;color:var(--text-main)}
.brand-text small{font-size:10px;letter-spacing:.22em;color:var(--text-weak);font-weight:500}
.header-tools{display:flex;align-items:center;justify-content:flex-end;gap:10px;flex:1;min-width:0}
.site-status{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;color:var(--text-sub);border:1px solid var(--line);border-radius:999px;padding:5px 11px;white-space:nowrap}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--brand-green);box-shadow:0 0 8px rgba(63,224,180,.9)}
.status-dot.pulse{animation:pulseDot 1.6s infinite}
@keyframes pulseDot{0%,100%{box-shadow:0 0 0 0 rgba(63,224,180,.5)}50%{box-shadow:0 0 0 6px rgba(63,224,180,0)}}
.header-search-box{display:flex;align-items:center;width:238px;max-width:38vw;border:1px solid var(--line);background:var(--glass-50);border-radius:999px;padding:4px 4px 4px 14px;transition:border-color .2s ease, box-shadow .2s ease}
.header-search-box:focus-within{border-color:rgba(37,228,255,.4);box-shadow:0 0 0 3px rgba(37,228,255,.1)}
.header-search-box input{width:100%;border:none;outline:none;background:transparent;color:var(--text-main);font-size:14px;line-height:1;height:30px}
.header-search-box input::placeholder{color:var(--text-weak)}
.header-search-btn{width:30px;height:30px;border:0;border-radius:50%;background:linear-gradient(135deg,var(--brand-blue),var(--brand-cyan));color:#fff;cursor:pointer;font-size:13px;display:flex;align-items:center;justify-content:center}
.channel-row{border-top:1px solid rgba(255,255,255,0.05);background:rgba(255,255,255,0.015);min-height:52px;transition:min-height .2s ease}
.site-header.is-scrolled .channel-row{min-height:46px}
.channel-row-inner{display:flex;align-items:center;justify-content:space-between;gap:20px}
.channel-nav{display:flex;align-items:center;gap:2px;overflow-x:auto;scrollbar-width:none;flex:1}
.channel-nav::-webkit-scrollbar{display:none}
.channel-nav .nav-link{
  position:relative;display:inline-flex;align-items:center;
  color:var(--text-sub);font-size:15px;font-weight:500;
  padding:14px 18px;white-space:nowrap;border-radius:8px;
  transition:color .2s ease, background .2s ease;
}
.site-header.is-scrolled .channel-nav .nav-link{padding-top:10px;padding-bottom:10px}
.channel-nav .nav-link i{margin-right:7px;font-size:13px;color:var(--text-weak)}
.channel-nav .nav-link:hover{color:var(--brand-cyan);background:rgba(37,228,255,0.05)}
.channel-nav .nav-link:hover::after{opacity:1;transform:translateX(-50%) scaleX(1)}
.channel-nav .nav-link.active{color:#fff;font-weight:600}
.channel-nav .nav-link.active i{color:var(--brand-cyan)}
.channel-nav .nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:4px;width:20px;height:2px;
  transform:translateX(-50%);background:var(--brand-cyan);
  border-radius:2px;box-shadow:0 0 8px rgba(37,228,255,.7);
  .site-header.is-scrolled .channel-nav .nav-link.active::after{bottom:2px}
}
.hot-tags{display:flex;align-items:center;gap:6px;flex-shrink:0}
.hot-tags .hot-tag{
  display:inline-flex;align-items:center;gap:4px;
  font-size:12.5px;color:var(--text-sub);border:1px solid var(--line);
  padding:4px 10px;border-radius:999px;background:var(--glass-50);white-space:nowrap;
  transition:all .2s ease;
}
.hot-tags .hot-tag:hover{border-color:rgba(37,228,255,.4);color:var(--brand-cyan);background:rgba(37,228,255,.06)}
.hot-tags .hot-tag i{font-size:10px;color:var(--brand-red)}
.header-search-btn{transition:filter .2s ease}
.header-search-btn:hover{filter:brightness(1.15)}
@media screen and (max-width:1023px){
  .top-brand-row .container{min-height:58px}
  .header-search-box{width:190px}
  .hot-tags{display:none}
}
@media screen and (max-width:639px){
  .brand-text strong{font-size:17px}
  .brand-text small{font-size:8px;letter-spacing:.12em}
  .logo-mark{width:34px;height:34px;font-size:15px}
  .site-status{display:none}
  .header-search-box{width:130px;padding-left:10px}
  .header-search-box input{font-size:13px}
  .channel-row-inner{padding-left:0;padding-right:0}
  .channel-nav .nav-link{font-size:14px;padding:13px 13px}
}
.category-hero{
  position:relative;padding:84px 0 72px;border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(7,17,31,0.42), rgba(11,26,46,0.86)),
    url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  overflow:hidden;
}
.category-hero::before{
  content:"";position:absolute;left:8%;top:-40px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle, rgba(37,228,255,0.10), transparent 65%);pointer-events:none;
}
.category-hero-copy{position:relative;z-index:2}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--brand-cyan);font-size:14px;font-weight:600;letter-spacing:.04em;
  background:rgba(37,228,255,.07);border:1px solid rgba(37,228,255,.24);
  padding:5px 13px;border-radius:999px;margin-bottom:22px;
}
.hero-kicker i{font-size:12px}
.category-hero h1{
  font-size:52px;font-weight:760;line-height:1.16;letter-spacing:-.02em;margin:10px 0 16px;
}
.hero-lead{font-size:18px;line-height:1.8;color:var(--text-sub);max-width:590px;margin-bottom:24px;font-weight:400}
.hero-strip-tags{margin-top:26px}
.hero-note{display:flex;align-items:center;gap:8px;margin-top:28px;color:var(--text-weak);font-size:13px}
.hero-console-wrap{position:relative;z-index:2}
.hero-console{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(255,255,255,0.15);
  background:linear-gradient(145deg,rgba(20,35,55,.82),rgba(9,20,34,.88));
  box-shadow:0 26px 80px rgba(0,0,0,.28),0 0 0 1px rgba(255,255,255,0.04);
  padding:18px;
}
.hero-console .console-bar{display:flex;align-items:center;justify-content:space-between;margin-bottom:13px}
.hero-console .bar-dots{display:flex;gap:6px}
.hero-console .bar-dots i{width:9px;height:9px;display:block;border-radius:50%;font-style:normal;background:rgba(255,255,255,.18)}
.hero-console .bar-dots i:first-child{background:#FF5F57}
.hero-console .bar-dots i:nth-child(2){background:#FEBC2E}
.hero-console .bar-dots i:nth-child(3){background:#28C840}
.hero-console .bar-title{display:flex;align-items:center;color:var(--text-weak);font-size:12px;letter-spacing:.04em}
.console-main-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(2,78px);gap:8px;margin-bottom:10px}
.console-tile{
  border-radius:9px;border:1px solid var(--line);position:relative;overflow:hidden;
  background:linear-gradient(145deg,rgba(255,255,255,0.075),rgba(255,255,255,0.015));
}
.console-tile.lg{grid-column:span 2;grid-row:span 2}
.console-tile .tile-label{position:absolute;left:10px;bottom:8px;font-size:11px;color:var(--text-weak)}
.console-tile .signal{
  width:5px;height:5px;border-radius:50%;position:absolute;right:9px;top:9px;background:var(--brand-green);box-shadow:0 0 8px var(--brand-green);
}
.console-screen-cover{grid-column:span 2;grid-row:span 2;border-radius:9px;overflow:hidden;background:#0c182a;min-height:0}
.console-screen-cover img{width:100%;height:100%;object-fit:cover;border-radius:9px}
.console-caption{display:flex;align-items:center;justify-content:space-between;color:var(--text-weak);font-size:13px}
.console-caption i{color:var(--brand-green);border:1px solid rgba(63,224,180,.35);border-radius:99px;padding:4px 8px;font-style:normal;font-size:12px}
@media screen and (max-width:1023px){
  .category-hero{padding:62px 0 52px}
  .hero-console-wrap{margin-top:40px}
  .category-hero h1{font-size:40px}
}
@media screen and (max-width:639px){
  .category-hero{padding:44px 0 42px}
  .category-hero h1{font-size:32px}
  .hero-lead{font-size:16px}
  .hero-console-wrap{margin-top:30px}
  .console-main-grid{grid-template-rows:repeat(2,58px)}
}
.metric-strip{border-bottom:1px solid var(--line);background:rgba(255,255,255,0.018)}
.metric-strip .grid-x{padding:34px 0}
.metric-item{position:relative;padding:12px 18px}
.metric-item .metric-label{color:var(--text-sub);font-size:13px;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.metric-item .metric-label i{color:var(--brand-cyan);font-size:12px}
.metric-item .metric-value{font-size:38px;font-weight:760;letter-spacing:-.02em;color:#fff;line-height:1.1;font-variant-numeric:tabular-nums}
.metric-item .metric-value span{color:var(--brand-cyan)}
.metric-item .metric-note{font-size:12.5px;color:var(--text-weak);margin-top:6px}
@media screen and (max-width:639px){
  .metric-item .metric-value{font-size:30px}
}
.feature-spotlight{position:relative}
.feature-text-wrap .section-title{margin-top:12px}
.feature-para{color:var(--text-sub);font-size:15px;margin-top:16px;line-height:1.8}
.spot-check-list{list-style:none;margin:24px 0 0}
.spot-check-list li{position:relative;padding:8px 0 8px 30px;color:var(--text-main);font-size:15px;line-height:1.7}
.spot-check-list li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;
  position:absolute;left:0;top:12px;width:20px;height:20px;border-radius:50%;
  background:rgba(37,228,255,.12);border:1px solid rgba(37,228,255,.3);
  color:var(--brand-cyan);display:flex;align-items:center;justify-content:center;
}
.spot-check-list strong{color:#fff;font-weight:600}
.preview-panel{position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line);background:#0b1624;height:100%}
.preview-panel img{width:100%;height:100%;min-height:320px;object-fit:cover}
.preview-panel .preview-caption{
  position:absolute;left:18px;right:18px;bottom:16px;border-radius:14px;
  background:rgba(7,17,31,0.7);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,0.12);
  padding:20px;
}
.preview-caption .cp-title{font-size:18px;font-weight:620;color:#fff;margin-bottom:4px}
.preview-caption .cp-line{color:var(--text-sub);font-size:14px}
.feature-card-grid{margin-top:34px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature-mini-card{
  border:1px solid var(--line);border-radius:var(--r-md);background:rgba(255,255,255,0.035);
  padding:24px;transition:transform .25s ease,border-color .25s ease, background .25s ease;
}
.feature-mini-card:hover{transform:translateY(-3px);border-color:rgba(37,228,255,.45);background:rgba(255,255,255,.055)}
.feature-mini-card .mini-icon{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:rgba(43,140,255,.13);color:var(--brand-cyan);font-size:20px;margin-bottom:18px;border:1px solid rgba(43,140,255,0.2)}
.feature-mini-card h3{font-size:18px;color:#fff;font-weight:620;margin-bottom:8px;letter-spacing:.01em}
.feature-mini-card p{color:var(--text-sub);font-size:14px;line-height:1.7}
.feature-mini-card .mini-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13px;color:var(--brand-cyan)}
@media screen and (max-width:1023px){
  .feature-card-grid{grid-template-columns:repeat(2,1fr)}
}
@media screen and (max-width:639px){
  .feature-card-grid{grid-template-columns:1fr}
}
.scene-section{background:linear-gradient(180deg, rgba(255,255,255,0.012), rgba(255,255,255,0.025));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.scene-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}
.scene-full-card{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);min-height:300px;background:#0b1624;display:block}
.scene-full-card img{width:100%;height:100%;min-height:300px;object-fit:cover;transition:transform .5s ease}
.scene-full-card:hover img{transform:scale(1.03)}
.scene-full-card .scene-overlay{position:absolute;left:0;right:0;bottom:0;padding:24px;background:linear-gradient(180deg,transparent,rgba(5,11,18,.92))}
.scene-overlay .scene_tag{display:inline-block;padding:3px 10px;border-radius:99px;background:rgba(255,74,106,.2);border:1px solid rgba(255,74,106,.45);color:#FFB6C3;font-size:12px;margin-bottom:10px}
.scene-overlay h3{font-size:20px;color:#fff;font-weight:620;margin-bottom:6px}
.scene-overlay p{color:#B9C9E0;font-size:14px;line-height:1.7;max-width:520px}
.scene-side-column{display:flex;flex-direction:column;gap:20px}
.scene-mini-item{flex:1;display:flex;background:rgba(0,0,0,0.18);border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:border-color .25s ease, transform .25s ease}
.scene-mini-item:hover{border-color:rgba(37,228,255,.35);transform:translateY(-3px)}
.scene-mini-item img{width:124px;min-width:124px;height:100%;min-height:145px;object-fit:cover}
.scene-mini-item .mini-text{flex:1;padding:16px 18px;display:flex;flex-direction:column;justify-content:center;min-width:0}
.scene-mini-item .mini-text h3{font-size:17px;font-weight:620;color:#fff;margin-bottom:5px}
.scene-mini-item .mini-text p{font-size:13.5px;color:var(--text-sub);line-height:1.6}
.scene-mini-item .mini-text span{display:inline-flex;align-items:center;gap:6px;color:var(--brand-cyan);font-size:13px;margin-top:8px}
@media screen and (max-width:1023px){
  .scene-grid{grid-template-columns:1fr}
  .scene-side-column{flex-direction:row}
  .scene-mini-item{flex-direction:column}
  .scene-mini-item img{width:100%;min-width:100%;height:140px;min-height:0}
}
@media screen and (max-width:639px){
  .scene-side-column{flex-direction:column}
  .scene-full-card{min-height:260px}
  .scene-full-card img{min-height:260px}
}
.deploy-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.deploy-item{border:1px solid var(--line);border-radius:16px;padding:30px 24px;background:rgba(255,255,255,0.025);transition:all .25s ease;position:relative}
.deploy-item:hover{border-color:rgba(37,228,255,.4);background:rgba(37,228,255,0.04);transform:translateY(-4px)}
.deploy-item .deploy-count{position:absolute;top:18px;right:20px;font-size:13px;color:var(--text-weak);font-weight:700;letter-spacing:.08em}
.deploy-item .deploy-icon{width:54px;height:54px;border-radius:14px;background:linear-gradient(140deg,rgba(37,228,255,.17),rgba(43,140,255,.12));display:flex;align-items:center;justify-content:center;font-size:22px;color:var(--brand-cyan);margin-bottom:20px;border:1px solid rgba(37,228,255,.2)}
.deploy-item h3{font-size:19px;color:#fff;font-weight:640;margin-bottom:8px}
.deploy-item p{color:var(--text-sub);font-size:14.5px;line-height:1.7}
@media screen and (max-width:1023px){.deploy-grid{grid-template-columns:1fr 1fr}}
@media screen and (max-width:639px){.deploy-grid{grid-template-columns:1fr}}
.steps-container{position:relative;margin-top:10px}
.steps-list{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step-item{position:relative;padding:26px 22px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,0.02)}
.step-item::before{content:attr(data-step);position:absolute;top:-12px;left:18px;display:inline-flex;align-items:center;justify-content:center;min-width:26px;height:26px;background:linear-gradient(135deg,var(--brand-blue),var(--brand-cyan));color:#fff;font-size:13px;font-weight:700;border-radius:8px;padding:0 7px;box-shadow:0 0 12px rgba(37,228,255,.2)}
.step-item h3{font-size:17.5px;margin-bottom:8px;color:#fff;font-weight:620}
.step-item p{color:var(--text-sub);font-size:14px;line-height:1.7}
.step-item .step-line{position:absolute;top:3px;left:18px;right:18px;height:1px;background:rgba(37,228,255,0.15)}
@media screen and (max-width:1023px){.steps-list{grid-template-columns:repeat(2,1fr);gap:24px 20px}}
@media screen and (max-width:639px){.steps-list{grid-template-columns:1fr}}
.faq-section{background:linear-gradient(180deg, rgba(255,255,255,0.012), rgba(255,255,255,0.03));border-top:1px solid var(--line)}
.faq-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px}
.faq-intro .faq-intro-panel{background:rgba(255,255,255,0.055);border:1px solid var(--line);border-radius:16px;padding:26px;margin-top:22px}
.faq-intro-panel h3{font-size:17px;color:#fff;margin-bottom:12px}
.faq-intro-panel p{color:var(--text-sub);font-size:14px;line-height:1.7;margin-bottom:8px}
.faq-intro-panel a{color:var(--brand-cyan);font-weight:500;display:inline-flex;align-items:center;gap:5px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,0.035);overflow:hidden;transition:border-color .2s ease}
.faq-item.active{border-color:rgba(37,228,255,.4)}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;text-align:left;gap:14px;padding:20px 22px;background:transparent;border:none;color:var(--text-main);font-size:16px;font-weight:600;line-height:1.5;cursor:pointer}
.faq-question .q-icon{flex-shrink:0;width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(37,228,255,.1);border:1px solid rgba(37,228,255,.28);color:var(--brand-cyan);font-size:13px;transition:all .2s ease}
.faq-item.active .faq-question .q-icon{transform:rotate(90deg);background:rgba(37,228,255,.2)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-answer .faq-inner{padding:0 22px 20px 22px;color:var(--text-sub);font-size:15px;line-height:1.75;border-top:1px solid transparent}
.faq-item.active .faq-answer .faq-inner{border-top-color:rgba(255,255,255,0.07)}
@media screen and (max-width:1023px){.faq-layout{grid-template-columns:1fr}}
@media screen and (max-width:639px){
  .faq-question{font-size:15px;padding:17px 15px}
}
.cta-section{position:relative;border-top:1px solid var(--line);overflow:hidden;background:url('/assets/images/backpic/back-2.png') center 20% / cover no-repeat}
.cta-section::before{content:"";position:absolute;inset:0;background:linear-gradient(110deg, rgba(7,17,31,.96) 0%, rgba(11,26,46,.92) 55%, rgba(8,32,52,.68) 100%)}
.cta-section .container{position:relative;z-index:2}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
.cta-title{font-size:34px;font-weight:720;line-height:1.25;letter-spacing:-.01em}
.cta-title i{color:var(--brand-cyan);font-style:normal}
.cta-desc{color:var(--text-sub);font-size:16px;margin-top:15px;line-height:1.8}
.cta-benefits{list-style:none;margin-top:26px;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.cta-benefits li{display:flex;align-items:center;gap:10px;color:var(--text-main);font-size:14.5px}
.cta-benefits li i{color:var(--brand-green);font-size:13px;width:22px;height:22px;border-radius:50%;background:rgba(63,224,180,.1);display:flex;align-items:center;justify-content:center}
.cta-touch{margin-top:30px;display:flex;flex-wrap:wrap;gap:26px;padding-top:24px;border-top:1px solid var(--line)}
.cta-touch-item{display:flex;align-items:center;gap:11px;font-size:14px;color:var(--text-sub)}
.cta-touch-item i{font-size:18px;color:var(--brand-cyan)}
.cta-form-panel{
  background:rgba(255,255,255,0.07);backdrop-filter:blur(18px);
  border:1px solid rgba(255,255,255,0.14);border-radius:20px;padding:32px;
  box-shadow:0 18px 60px rgba(0,0,0,0.25);
}
.form-title{font-size:20px;font-weight:640;margin-bottom:6px}
.form-sub-title{color:var(--text-sub);font-size:13.5px;margin-bottom:22px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{display:flex;flex-direction:column;gap:7px;margin-bottom:16px}
.form-label{font-size:13px;color:var(--text-sub)}
.form-label i{color:var(--brand-cyan);margin-right:4px}
.form-label .red{color:var(--brand-red)}
.form-control{
  width:100%;display:block;border:0;border-bottom:1px solid rgba(255,255,255,0.22);
  background:transparent;color:#fff;font-size:14px;padding:9px 2px;outline:none;border-radius:0;
  transition:border-color .2s ease, box-shadow .2s ease;min-height:44px;
}
.form-control::placeholder{color:#7C91AF}
.form-control:focus{border-bottom-color:var(--brand-cyan);box-shadow:0 7px 10px -10px rgba(37,228,255,.65)}
.form-select{border:1px solid var(--line);border-bottom-color:rgba(255,255,255,0.25);background:rgba(255,255,255,0.03);border-radius:8px;padding:0 14px;cursor:pointer}
textarea.form-control{resize:vertical;min-height:86px;line-height:1.6}
.form-submit-row{margin-top:8px;display:flex;justify-content:flex-end}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:46px;padding:0 24px;border-radius:8px;font-size:15px;font-weight:560;
  cursor:pointer;border:1px solid transparent;line-height:1;transition:all .2s ease;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand-blue),var(--brand-cyan));color:#fff;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{filter:brightness(1.1);transform:translateY(-1px);box-shadow:var(--shadow-glow-lg);color:#fff}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--shadow-glow)}
.btn-ghost{border-color:rgba(255,255,255,.2);background:rgba(255,255,255,.04);color:#fff}
.btn-ghost:hover{border-color:var(--brand-cyan);color:var(--brand-cyan);background:rgba(37,228,255,.05)}
.form-success{display:none;align-items:flex-start;gap:12px;padding:18px;margin-top:6px;border:1px solid rgba(63,224,180,.4);border-radius:12px;background:rgba(63,224,180,.07);color:#C7FBE9;font-size:15px}
.form-success.active{display:flex}
.form-success i{font-size:18px;color:var(--brand-green);margin-top:2px}
@media screen and (max-width:900px){
  .cta-grid{grid-template-columns:1fr}
  .cta-title{font-size:30px}
}
@media screen and (max-width:639px){
  .form-row{grid-template-columns:1fr}
  .cta-title{font-size:27px}
  .cta-benefits{grid-template-columns:1fr}
  .cta-form-panel{padding:24px 20px}
}
.site-footer{background:#050d17;border-top:1px solid var(--line);color:var(--text-sub)}
.site-footer .container{padding-top:58px}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px}
.footer-brand .brand-logo{margin-bottom:14px}
.footer-brand p{color:var(--text-sub);font-size:14px;line-height:1.8;max-width:320px;margin-top:8px}
.footer-col h5{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:5px}
.footer-col a{display:inline-flex;align-items:center;gap:7px;padding:4px 0;color:var(--text-sub);font-size:14px;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--brand-cyan);transform:translateX(3px)}
.footer-col a i{font-size:11px;color:var(--text-weak);transition:color .2s ease}
.footer-col a:hover i{color:var(--brand-cyan)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.07);margin-top:48px}
.footer-bottom .container{padding-top:0;padding-bottom:0}
.footer-bottom-flex{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;width:100%;padding:20px 0;font-size:13px;color:var(--text-weak)}
.domain-link{color:var(--text-sub);letter-spacing:.02em;font-weight:400}
@media screen and (max-width:900px){
  .footer-top{grid-template-columns:1fr 1fr;gap:28px}
}
@media screen and (max-width:639px){
  .footer-top{grid-template-columns:1fr;gap:24px;padding-top:40px}
  .footer-bottom .container{padding-top:18px}
  .footer-bottom-flex{padding:16px 0}
}

/* roulang page: category2 */
:root{
    --bg-deep:#07111F;
    --bg-body:#0B1A2E;
    --bg-panel:#0E1F36;
    --primary:#2B8CFF;
    --accent:#25E4FF;
    --green:#3FE0B4;
    --red:#FF4A6A;
    --txt-main:#EAF2FF;
    --txt-sub:#9FB3D1;
    --txt-weak:#677F9E;
    --glass-bg:rgba(255,255,255,0.06);
    --glass-border:rgba(255,255,255,0.12);
    --card-bg:rgba(255,255,255,0.03);
    --line:rgba(255,255,255,0.08);
    --radius-lg:18px;
    --radius-md:12px;
    --radius-sm:8px;
    --radius-xs:6px;
    --shadow-glow:0 0 0 1px rgba(37,228,255,0.25),0 4px 24px rgba(37,228,255,0.25);
    --shadow-card:0 2px 12px rgba(0,0,0,0.18);
    --shadow-float:0 8px 30px rgba(0,0,0,0.3);
    --container-w:1280px;
    --space-section:96px;
    --space-section-md:72px;
    --space-section-sm:56px;
    --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
    --font-num:Inter,"PingFang SC","Microsoft YaHei",sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    font-family:var(--font-cn);
    background:var(--bg-body);
    color:var(--txt-main);
    line-height:1.7;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;top:0;left:0;width:100%;height:100%;
    background:
      radial-gradient(ellipse 60% 40% at 85% 10%,rgba(43,140,255,0.08),transparent),
      radial-gradient(ellipse 40% 30% at 10% 80%,rgba(37,228,255,0.04),transparent);
    pointer-events:none;z-index:0;
  }
  img{max-width:100%;display:block}
  a{color:var(--accent);text-decoration:none;transition:color .25s}
  a:hover{color:#8FF3FF}
  .container{max-width:var(--container-w);margin:0 auto;padding:0 32px;position:relative;z-index:1}
  .page-wrap{position:relative;z-index:1}

  .top-bar{
    background:rgba(7,17,31,0.85);
    backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
    border-bottom:1px solid rgba(255,255,255,0.06);
    position:sticky;top:0;z-index:999;transition:box-shadow .3s;
  }
  .top-bar.scrolled{
    box-shadow:0 6px 30px rgba(0,0,0,0.45);
    background:rgba(7,17,31,0.94);
  }
  .brand-row{
    display:flex;align-items:center;justify-content:space-between;
    padding:10px 0;gap:20px;
    border-bottom:1px solid rgba(255,255,255,0.05);
    transition:padding .3s;
  }
  .brand-logo{
    display:flex;align-items:center;gap:12px;color:var(--txt-main);
  }
  .brand-logo:hover{color:var(--txt-main)}
  .logo-mark{
    width:40px;height:40px;border-radius:10px;flex-shrink:0;
    background:linear-gradient(135deg,var(--primary),var(--accent));
    display:flex;align-items:center;justify-content:center;
    color:#fff;font-size:18px;
    box-shadow:0 0 20px rgba(43,140,255,0.35);
  }
  .brand-text strong{
    display:block;font-size:19px;font-weight:800;letter-spacing:0.01em;
    background:linear-gradient(90deg,#EAF2FF,#A8D8FF);
    -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  }
  .brand-text small{
    display:block;font-size:10px;letter-spacing:0.14em;color:var(--txt-weak);
    font-family:var(--font-num);
  }
  .trend-entry{
    display:flex;align-items:center;gap:14px;
  }
  .trend-entry .search-badge{
    display:inline-flex;align-items:center;gap:8px;
    color:var(--txt-sub);font-size:13px;
    border:1px solid var(--line);border-radius:999px;
    padding:6px 16px;background:rgba(255,255,255,0.02);
    cursor:pointer;transition:all .3s;
  }
  .trend-entry .search-badge:hover{border-color:rgba(37,228,255,0.4);color:var(--accent)}
  .channel-row{
    background:transparent;
  }
  .channel-nav{
    display:flex;align-items:center;gap:4px;padding:4px 0;flex-wrap:nowrap;
    overflow-x:auto;scrollbar-width:none;
  }
  .channel-nav::-webkit-scrollbar{display:none}
  .channel-nav .nav-link{
    color:var(--txt-sub);font-size:15px;font-weight:500;
    padding:9px 16px;border-radius:8px;white-space:nowrap;
    position:relative;transition:color .25s;
  }
  .channel-nav .nav-link::after{
    content:"";position:absolute;left:16px;right:16px;bottom:3px;height:2px;
    border-radius:2px;background:var(--accent);
    transform:scaleX(0);transform-origin:left;transition:transform .25s;
    box-shadow:0 0 10px rgba(37,228,255,0.5);
  }
  .channel-nav .nav-link:hover{color:var(--accent)}
  .channel-nav .nav-link:hover::after{transform:scaleX(1)}
  .channel-nav .nav-link.active{color:#fff;font-weight:600}
  .channel-nav .nav-link.active::after{transform:scaleX(1)}
  .hot-tags-nav{
    display:flex;align-items:center;gap:8px;margin-left:auto;padding-left:16px;flex-shrink:0;
  }
  .hot-tag-chip{
    font-size:12px;color:var(--txt-weak);
    border:1px solid rgba(255,255,255,0.08);border-radius:999px;
    padding:4px 14px;white-space:nowrap;transition:all .3s;
    background:rgba(255,255,255,0.02);
  }
  .hot-tag-chip:hover{color:var(--accent);border-color:rgba(37,228,255,0.35)}

  .cat-hero{
    position:relative;background:var(--bg-deep);overflow:hidden;
  }
  .cat-hero::before{
    content:"";position:absolute;inset:0;
    background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    opacity:0.35;filter:saturate(0.8);
  }
  .cat-hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(90deg,rgba(7,17,31,0.96) 30%,rgba(7,17,31,0.65));
  }
  .cat-hero-inner{
    position:relative;z-index:2;padding:80px 0 64px;
    display:flex;align-items:flex-start;justify-content:space-between;gap:48px;
  }
  .cat-hero-copy{max-width:680px}
  .cat-badge{
    display:inline-flex;align-items:center;gap:8px;
    background:var(--glass-bg);border:1px solid var(--glass-border);
    backdrop-filter:blur(12px);
    border-radius:999px;padding:7px 18px;
    font-size:13px;color:var(--accent);font-weight:500;
    margin-bottom:20px;
  }
  .cat-badge .dot{
    width:6px;height:6px;border-radius:50%;background:var(--red);
    box-shadow:0 0 8px rgba(255,74,106,0.8);
    animation:pulse-dot 2s infinite;
  }
  @keyframes pulse-dot{
    0%,100%{opacity:1;transform:scale(1)}
    50%{opacity:0.6;transform:scale(0.82)}
  }
  .cat-hero h1{
    font-size:44px;font-weight:800;line-height:1.2;
    letter-spacing:-0.02em;color:#fff;margin-bottom:18px;
  }
  .cat-hero h1 .accent-text{
    background:linear-gradient(90deg,#25E4FF,#7CBEFF);
    -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  }
  .cat-hero p.lead{
    font-size:17px;color:var(--txt-sub);line-height:1.8;margin-bottom:28px;
    max-width:600px;
  }
  .tag-line{
    display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;
  }
  .tag-line span{
    font-size:13px;color:var(--txt-sub);
    border:1px solid var(--line);background:rgba(255,255,255,0.02);
    border-radius:999px;padding:6px 15px;
  }
  .hero-cta{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 28px;border-radius:8px;
    font-size:15px;font-weight:600;letter-spacing:0.02em;
    font-family:var(--font-cn);cursor:pointer;text-decoration:none;
    transition:all .25s ease;border:none;
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--primary),var(--accent));
    color:#fff;box-shadow:0 0 0 1px rgba(37,228,255,0.25),0 4px 24px rgba(37,228,255,0.25);
  }
  .btn-primary:hover{
    color:#fff;transform:translateY(-2px);
    box-shadow:0 0 0 1px rgba(37,228,255,0.4),0 6px 36px rgba(37,228,255,0.4);
  }
  .btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-glow)}
  .btn-ghost{
    background:transparent;color:#CDE4FF;
    border:1px solid rgba(255,255,255,0.18);
  }
  .btn-ghost:hover{color:var(--accent);border-color:rgba(37,228,255,0.5);background:rgba(37,228,255,0.04)}
  .btn-ghost i{font-size:13px;transition:transform .25s}
  .btn-ghost:hover i{transform:translateX(3px)}
  .cat-hero-visual{
    flex-shrink:0;width:280px;display:flex;align-items:center;justify-content:center;
    position:relative;
  }
  .signal-ring{
    position:relative;width:240px;height:240px;border-radius:50%;
    border:1px solid rgba(37,228,255,0.2);
    display:flex;align-items:center;justify-content:center;
  }
  .signal-ring::before{
    content:"";position:absolute;inset:22px;border-radius:50%;
    border:1px solid rgba(37,228,255,0.25);
  }
  .signal-ring::after{
    content:"";position:absolute;inset:48px;border-radius:50%;
    border:1px solid rgba(63,224,180,0.3);
    box-shadow:0 0 40px rgba(37,228,255,0.12);
  }
  .signal-core{
    width:88px;height:88px;border-radius:50%;
    background:radial-gradient(circle,rgba(43,140,255,0.8),rgba(7,17,31,0.6));
    border:1px solid rgba(37,228,255,0.5);
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 0 40px rgba(37,228,255,0.25);
    color:#fff;font-size:32px;
  }
  .float-orb{position:absolute;width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}
  .orb-1{top:18px;right:32px;animation:blink 1.6s infinite}
  .orb-2{bottom:26px;left:26px;background:var(--green);box-shadow:0 0 12px var(--green);animation:blink 2s infinite 0.6s}
  .orb-3{bottom:44px;right:18px;width:6px;height:6px;background:var(--red);box-shadow:0 0 8px var(--red);animation:blink 1.3s infinite}
  @keyframes blink{0%,100%{opacity:1}50%{opacity:0.3}}

  .section{padding:var(--space-section) 0}
  .section-tight{padding:56px 0}
  .section-head{
    display:flex;align-items:flex-end;justify-content:space-between;
    gap:24px;margin-bottom:44px;flex-wrap:wrap;
  }
  .section-head .title-group h2{
    font-size:32px;font-weight:700;line-height:1.3;
    letter-spacing:0.01em;color:#fff;margin-bottom:8px;
  }
  .section-head .title-group p{
    color:var(--txt-sub);font-size:15px;max-width:560px;
  }
  .section-more a{
    font-size:14px;font-weight:500;color:var(--txt-sub);
    display:inline-flex;align-items:center;gap:6px;
    border:1px solid var(--line);border-radius:999px;
    padding:8px 20px;transition:all .25s;
  }
  .section-more a:hover{color:var(--accent);border-color:rgba(37,228,255,0.4)}
  .section-more a i{font-size:12px;transition:transform .25s}
  .section-more a:hover i{transform:translateX(4px)}

  .section-feature{background:var(--bg-deep);position:relative;overflow:hidden}
  .section-feature::before{
    content:"";position:absolute;inset:0;
    background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    opacity:0.08;
  }
  .section-feature .section-head,.section-feature .container{position:relative;z-index:1}

  .feature-grid{
    display:grid;grid-template-columns:repeat(12,1fr);gap:20px;
  }
  .feature-main{
    grid-column:span 7;border-radius:var(--radius-lg);
    border:1px solid var(--glass-border);
    background:linear-gradient(145deg,rgba(255,255,255,0.08),rgba(255,255,255,0.02));
    backdrop-filter:blur(6px);
    padding:32px;position:relative;overflow:hidden;
    transition:transform .3s,border-color .3s;
  }
  .feature-main:hover{border-color:rgba(37,228,255,0.4);transform:translateY(-3px)}
  .feature-main .feature-icon{
    width:52px;height:52px;border-radius:14px;
    background:rgba(37,228,255,0.12);border:1px solid rgba(37,228,255,0.3);
    display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:22px;
    margin-bottom:18px;
  }
  .feature-main h3{font-size:22px;margin-bottom:10px;color:#fff}
  .feature-main p{color:var(--txt-sub);font-size:15px;line-height:1.8;margin-bottom:16px}
  .feature-metrics{
    display:flex;gap:28px;margin-top:16px;padding-top:16px;
    border-top:1px solid var(--line);flex-wrap:wrap;
  }
  .metric-item .m-num{
    font-family:var(--font-num);font-size:24px;font-weight:700;color:#fff;
    font-variant-numeric:tabular-nums;
  }
  .metric-item .m-num em{color:var(--accent);font-style:normal}
  .metric-item .m-label{font-size:13px;color:var(--txt-weak);margin-top:4px}
  .feature-side{
    grid-column:span 5;display:flex;flex-direction:column;gap:20px;
  }
  .feature-card{
    border-radius:var(--radius-lg);
    border:1px solid var(--line);
    background:var(--card-bg);
    padding:24px 26px;flex:1;
    display:flex;gap:18px;align-items:flex-start;
    transition:border-color .3s,transform .3s,background .3s;
  }
  .feature-card:hover{border-color:rgba(37,228,255,0.35)}
  .feature-card .f-icon{
    width:42px;height:42px;border-radius:11px;flex-shrink:0;
    background:rgba(43,140,255,0.14);border:1px solid rgba(43,140,255,0.25);
    display:flex;align-items:center;justify-content:center;color:#7EBBFF;font-size:18px;
  }
  .feature-card h4{font-size:17px;font-weight:600;margin-bottom:6px;color:var(--txt-main)}
  .feature-card p{font-size:14px;color:var(--txt-sub);line-height:1.7}

  .section-scene{background:transparent}
  .scene-grid{
    display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  }
  .scene-card{
    border-radius:var(--radius-md);padding:26px 22px;
    background:var(--card-bg);border:1px solid var(--line);
    transition:all .3s;
  }
  .scene-card:hover{border-color:rgba(37,228,255,0.3);transform:translateY(-4px);background:rgba(255,255,255,0.05)}
  .scene-card .s-idx{
    font-family:var(--font-num);font-size:13px;font-weight:600;color:var(--txt-weak);
    letter-spacing:0.1em;margin-bottom:14px;
  }
  .scene-card .s-icon{
    font-size:24px;color:var(--accent);margin-bottom:14px;
  }
  .scene-card h3{
    font-size:18px;font-weight:600;color:#fff;margin-bottom:10px;
    position:relative;padding-bottom:12px;
  }
  .scene-card h3::after{
    content:"";position:absolute;left:0;bottom:0;width:28px;height:2px;
    background:linear-gradient(90deg,var(--accent),transparent);border-radius:2px;
  }
  .scene-card p{font-size:14px;color:var(--txt-sub);line-height:1.75}

  .section-workflow{
    background:var(--bg-deep);border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);position:relative;
  }
  .workflow-steps{
    display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:wf;
  }
  .wf-step{
    position:relative;padding:28px 22px;border-radius:var(--radius-md);
    background:rgba(255,255,255,0.02);border:1px solid var(--line);
    transition:border-color .25s;
    counter-increment:wf;
  }
  .wf-step:hover{border-color:rgba(37,228,255,0.35)}
  .wf-step .step-num{
    font-family:var(--font-num);font-size:34px;font-weight:800;
    color:rgba(37,228,255,0.18);line-height:1;margin-bottom:14px;
    display:block;
  }
  .wf-step h3{font-size:17px;font-weight:600;color:#fff;margin-bottom:10px}
  .wf-step p{font-size:14px;color:var(--txt-sub);line-height:1.7}
  .wf-step .arrow-link{
    display:inline-flex;align-items:center;gap:6px;
    font-size:13px;color:var(--txt-weak);margin-top:16px;
    transition:color .25s;
  }
  .wf-step:hover .arrow-link{color:var(--accent)}

  .section-advantage{background:transparent}
  .adv-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
  .adv-card{
    grid-column:span 2;border-radius:var(--radius-md);
    padding:22px;border:1px solid var(--line);
    background:linear-gradient(160deg,rgba(255,255,255,0.04),transparent);
    transition:all .3s;
  }
  .adv-card:hover{border-color:rgba(37,228,255,0.3);background:rgba(37,228,255,0.04)}
  .adv-card .a-icon{
    color:var(--green);font-size:20px;margin-bottom:12px;
  }
  .adv-card h3{font-size:16px;font-weight:600;margin-bottom:6px;color:#fff}
  .adv-card p{font-size:13.5px;color:var(--txt-sub);line-height:1.7}

  .section-showcase{background:var(--bg-deep);position:relative;overflow:hidden}
  .showcase-card{
    display:grid;grid-template-columns:1.05fr 1fr;border-radius:var(--radius-lg);
    overflow:hidden;border:1px solid var(--glass-border);
    background:var(--card-bg);
  }
  .showcase-media{position:relative;min-height:360px;overflow:hidden;background:#0E1F36}
  .showcase-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;transition:transform .5s}
  .showcase-card:hover .showcase-media img{transform:scale(1.03)}
  .showcase-media::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(to right,transparent,rgba(11,26,46,0.25));
  }
  .showcase-badge{
    position:absolute;top:16px;left:16px;z-index:2;
    background:rgba(7,17,31,0.78);backdrop-filter:blur(8px);
    border:1px solid rgba(37,228,255,0.35);
    color:var(--accent);font-size:12px;font-weight:500;
    border-radius:999px;padding:5px 14px;
    display:inline-flex;align-items:center;gap:6px;
  }
  .showcase-badge i{font-size:10px;color:var(--green)}
  .showcase-content{padding:36px;display:flex;flex-direction:column;justify-content:center;gap:14px}
  .showcase-content .label{
    font-size:12px;color:var(--accent);letter-spacing:0.14em;text-transform:uppercase;
  }
  .showcase-content h2{font-size:27px;line-height:1.4;color:#fff;font-weight:700}
  .showcase-content p{color:var(--txt-sub);font-size:15px;line-height:1.85}
  .showcase-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
  .showcase-points span{
    font-size:13px;color:var(--txt-main);
    background:rgba(37,228,255,0.07);
    border:1px solid rgba(37,228,255,0.16);
    padding:5px 14px;border-radius:999px;
  }
  .showcase-link{
    margin-top:8px;display:inline-flex;align-items:center;gap:8px;
    color:var(--accent);font-size:14px;font-weight:500;
  }
  .showcase-link i{transition:transform .25s}
  .showcase-link:hover i{transform:translateX(4px)}

  .section-case{background:transparent}
  .case-grid{
    display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  }
  .case-card{
    border-radius:var(--radius-lg);overflow:hidden;
    border:1px solid var(--line);background:var(--card-bg);
    transition:transform .3s,border-color .3s;
  }
  .case-card:hover{transform:translateY(-4px);border-color:rgba(37,228,255,0.3)}
  .case-cover{
    aspect-ratio:16/9;overflow:hidden;position:relative;
    background:#0E1F36;
  }
  .case-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
  .case-card:hover .case-cover img{transform:scale(1.04)}
  .case-tag{
    position:absolute;top:12px;left:12px;z-index:2;
    background:rgba(7,17,31,0.82);backdrop-filter:blur(6px);
    color:var(--accent);font-size:12px;
    border-radius:999px;padding:4px 13px;
    border:1px solid rgba(37,228,255,0.25);
  }
  .case-body{padding:20px 22px 26px}
  .case-body h3{font-size:17px;font-weight:600;color:#fff;margin-bottom:8px;line-height:1.5}
  .case-body p{font-size:14px;color:var(--txt-sub);margin-bottom:14px;line-height:1.7}
  .case-meta{
    display:flex;flex-wrap:wrap;gap:8px;padding-top:12px;
    border-top:1px solid var(--line);
  }
  .case-meta span{
    font-size:12px;color:var(--txt-weak);background:rgba(255,255,255,0.03);
    padding:4px 12px;border-radius:999px;
  }

  .section-faq{background:var(--bg-deep);position:relative}
  .faq-layout{
    display:grid;grid-template-columns:1fr 2.2fr;gap:48px;
  }
  .faq-intro{padding-top:10px}
  .faq-intro h2{font-size:28px;line-height:1.4;color:#fff;margin-bottom:14px}
  .faq-intro p{color:var(--txt-sub);font-size:15px;line-height:1.8;margin-bottom:18px}
  .faq-contact-link{
    color:var(--accent);font-size:15px;display:inline-flex;align-items:center;
    gap:8px;border-bottom:1px dashed rgba(37,228,255,0.4);
    padding-bottom:2px;
  }
  .faq-list{display:flex;flex-direction:column;gap:12px}
  .faq-item{
    border:1px solid transparent;background:rgba(255,255,255,0.035);
    border-radius:12px;overflow:hidden;transition:border-color .25s,background .25s;
  }
  .faq-item.active{
    border-color:rgba(37,228,255,0.4);background:rgba(37,228,255,0.04);
  }
  .faq-q{
    width:100%;background:none;border:none;text-align:left;
    padding:18px 22px;cursor:pointer;
    font-size:15.5px;font-weight:600;color:var(--txt-main);
    display:flex;align-items:center;justify-content:space-between;
    font-family:var(--font-cn);transition:color .25s;
  }
  .faq-q:hover{color:var(--accent)}
  .faq-q .arrow{
    color:var(--accent);font-size:14px;flex-shrink:0;
    transition:transform .25s;margin-left:16px;
    width:22px;height:22px;border-radius:50%;
    background:rgba(37,228,255,0.1);
    display:inline-flex;align-items:center;justify-content:center;
    font-size:11px;
  }
  .faq-item.active .faq-q .arrow{transform:rotate(90deg)}
  .faq-a{
    max-height:0;overflow:hidden;
    transition:max-height .3s ease;
  }
  .faq-a-inner{
    padding:0 22px 20px;color:var(--txt-sub);font-size:15px;line-height:1.8;
  }

  .section-contact{
    background:var(--bg-deep);position:relative;overflow:hidden;
    padding:96px 0;
  }
  .section-contact::before{
    content:"";position:absolute;top:-200px;right:-250px;width:600px;height:600px;
    border-radius:50%;border:1px solid rgba(37,228,255,0.08);
    box-shadow:0 0 0 40px rgba(37,228,255,0.02),0 0 0 90px rgba(37,228,255,0.015);
  }
  .contact-wrap{
    display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  }
  .contact-copy h2{
    font-size:30px;line-height:1.4;color:#fff;
    margin-bottom:16px;font-weight:700;
  }
  .contact-copy p{color:var(--txt-sub);font-size:15px;line-height:1.8;margin-bottom:22px}
  .contact-list{display:flex;flex-direction:column;gap:14px;margin-top:26px}
  .contact-list-item{
    display:flex;align-items:flex-start;gap:12px;
    color:var(--txt-main);font-size:14px;
  }
  .contact-list-item i{
    color:var(--green);margin-top:4px;font-size:14px;flex-shrink:0;
  }
  .contact-form-card{
    border-radius:var(--radius-lg);
    background:rgba(255,255,255,0.055);
    backdrop-filter:blur(16px);
    border:1px solid var(--glass-border);
    padding:36px 36px 32px;
    position:relative;
  }
  .contact-form-card .fc-title{
    font-size:20px;color:#fff;margin-bottom:20px;font-weight:600;
  }
  .form-grid{
    display:grid;grid-template-columns:1fr 1fr;gap:14px;
  }
  .form-group{display:flex;flex-direction:column;gap:6px}
  .form-group.full{grid-column:span 2}
  .form-group label{
    font-size:13px;color:var(--txt-sub);font-weight:500;
  }
  .form-group label .req{color:var(--red)}
  .form-group input,.form-group select,.form-group textarea{
    width:100%;background:rgba(255,255,255,0.04);
    border:1px solid rgba(255,255,255,0.13);
    border-radius:8px;padding:11px 15px;
    color:var(--txt-main);font-family:var(--font-cn);font-size:14px;
    outline:none;transition:border-color .25s,box-shadow .25s;
  }
  .form-group input::placeholder,.form-group textarea::placeholder{color:var(--txt-weak)}
  .form-group input:focus,.form-group select:focus,.form-group textarea:focus{
    border-color:rgba(37,228,255,0.5);
    box-shadow:0 0 0 3px rgba(37,228,255,0.1);
  }
  .form-group textarea{resize:vertical;min-height:88px;line-height:1.6}
  .form-group select{
    appearance:none;-webkit-appearance:none;
    background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path d='M1 1l4 4 4-4' stroke='%23677F9E' stroke-width='1.5' fill='none' stroke-linecap='round'/></svg>");
    background-repeat:no-repeat;background-position:right 15px center;
    cursor:pointer;
  }
  .form-group select option{background:#0E1F36;color:var(--txt-main)}
  .form-submit-btn{
    grid-column:span 2;width:100%;justify-content:center;
  }
  .form-note{
    font-size:12px;color:var(--txt-weak);
    margin-top:14px;text-align:center;
    display:flex;align-items:center;justify-content:center;gap:6px;
  }

  .site-footer{
    background:#060D17;border-top:1px solid rgba(255,255,255,0.07);
    padding-top:72px;position:relative;
  }
  .footer-top{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1.2fr;
    gap:40px;padding-bottom:48px;
    border-bottom:1px solid rgba(255,255,255,0.06);
  }
  .footer-brand .brand-logo{margin-bottom:16px}
  .footer-brand p{
    color:var(--txt-sub);font-size:14px;line-height:1.85;
    max-width:320px;margin-top:14px;
  }
  .footer-col h5{
    font-size:15px;color:#fff;font-weight:600;
    margin-bottom:18px;
  }
  .footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
  .footer-col ul a{
    color:var(--txt-sub);font-size:14px;
    display:inline-flex;align-items:center;gap:6px;
    transition:color .2s,padding-left .2s;
  }
  .footer-col ul a i{font-size:10px;color:var(--txt-weak);transition:color .2s}
  .footer-col ul a:hover{color:var(--accent);padding-left:3px}
  .footer-col ul a:hover i{color:var(--accent)}
  .footer-bottom{
    padding:22px 0;background:rgba(0,0,0,0.25);
  }
  .footer-bottom-flex{
    text-align:left;color:var(--txt-weak);font-size:13px;
  }
  .domain-link{font-family:var(--font-num);font-size:12px;letter-spacing:0.02em}
  .mobile-nav-toggle{display:none}

  @media(max-width:1023px){
    .section{padding:var(--space-section-md) 0}
    .feature-grid{grid-template-columns:1fr}
    .feature-main{grid-column:span 12}
    .scene-grid{grid-template-columns:repeat(3,1fr)}
    .cat-hero-inner{flex-direction:column;gap:36px;padding:60px 0 48px}
    .cat-hero-visual{display:none}
    .case-grid{grid-template-columns:repeat(2,1fr)}
    .faq-layout{grid-template-columns:1fr}
    .contact-wrap{grid-template-columns:1fr}
    .footer-top{
      grid-template-columns:1fr 1fr;
    }
    .brand-row{padding:8px 0}
    .hot-tags-nav{display:none}
  }
  @media(max-width:767px){
    .container{padding:0 18px}
    .mobile-nav-toggle{
      display:flex;align-items:center;justify-content:center;
      width:38px;height:38px;border-radius:8px;
      border:1px solid rgba(255,255,255,0.13);background:rgba(255,255,255,0.05);
      color:var(--accent);font-size:16px;cursor:pointer;
    }
    .trend-entry .search-badge{display:none}
    .brand-text strong{font-size:17px}
    .brand-text small{display:none}
    .cat-hero h1{font-size:31px}
    .cat-hero p.lead{font-size:15px}
    .section-head .title-group h2{font-size:24px}
    .section-head .title-group p{font-size:14px}
    .section-more{display:none}
    .section{padding:var(--space-section-sm) 0}
    .scene-grid{grid-template-columns:1fr}
    .workflow-steps{grid-template-columns:1fr}
    .adv-grid{grid-template-columns:1fr 1fr}
    .adv-card{grid-column:span 1}
    .case-grid{grid-template-columns:1fr}
    .showcase-card{grid-template-columns:1fr}
    .showcase-media{min-height:230px}
    .showcase-content{padding:24px}
    .showcase-content h2{font-size:22px}
    .form-grid{grid-template-columns:1fr}
    .form-group.full{grid-column:span 1}
    .form-submit-btn{grid-column:span 1}
    .contact-form-card{padding:26px 24px}
    .footer-top{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
    .footer-brand p{max-width:100%}
    .hero-cta .btn{flex:1;justify-content:center}
  }
  @media(max-width:420px){
    .channel-nav .nav-link{padding:9px 14px;font-size:14px}
    .feature-main{padding:24px 20px}
    .feature-metrics{gap:16px;flex-direction:column}
    .cat-hero-inner{padding:40px 0}
    .form-submit-btn{width:100%}
    .footer-bottom-flex{flex-direction:column;text-align:center}
    .section-contact{padding:64px 0}
  }
  @media(prefers-reduced-motion:reduce){
    *{animation-duration:0.01ms!important;transition-duration:0.01ms!important}
  }

/* roulang page: category3 */
:root {
  --bg-deep: #07111F;
  --bg-main: #0B1A2E;
  --panel: #101E32;
  --primary: #2B8CFF;
  --accent: #25E4FF;
  --success: #3FE0B4;
  --danger: #FF4A6A;
  --text-main: #EAF2FF;
  --text-sub: #9FB3D1;
  --text-weak: #677F9E;
  --glass-bg: rgba(255,255,255,.05);
  --glass-bg-2: rgba(255,255,255,.03);
  --glass-border: rgba(255,255,255,.10);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-pill: 999px;
  --shadow-accent: 0 0 0 1px rgba(37,228,255,.25), 0 4px 24px rgba(37,228,255,.25);
  --shadow-hover: 0 6px 32px rgba(37,228,255,.45);
  --section-space: 96px;
  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  background: radial-gradient(circle at 85% 6%, rgba(37,228,255,.06), transparent 440px), linear-gradient(180deg, #07111F 0%, #0B1A2E 42%, #07111F 100%);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--accent); text-decoration: none; transition: color .2s ease, border-color .2s ease, background .2s ease; }
a:hover { color: #8EF5FF; }
p { margin: 0 0 16px; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 700; color: var(--text-main); line-height: 1.3; }
button, input, select, textarea { font-family: inherit; font-size: 1rem; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; width: 100%; }
.section { padding: var(--section-space) 0; }
main { flex: 1 0 auto; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7,17,31,.68);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,.06);
  transition: background .25s ease, box-shadow .25s ease;
}
.site-header.scrolled {
  background: rgba(6,12,24,.82);
  box-shadow: 0 12px 40px rgba(0,0,0,.25);
}
.top-brand {
  border-bottom: 1px solid rgba(255,255,255,.07);
  transition: min-height .25s ease;
}
.top-brand-inner {
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  transition: min-height .25s ease;
}
.site-header.scrolled .top-brand-inner { min-height: 46px; }
.site-header.scrolled .top-brand { border-bottom-color: transparent; }
.brand-logo { display: inline-flex; align-items: center; gap: 12px; }
.logo-mark {
  width: 38px;
  height: 38px;
  flex: none;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #2B8CFF, #25E4FF);
  color: #061021;
  font-size: 17px;
  box-shadow: 0 0 18px rgba(37,228,255,.24);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 19px; letter-spacing: .03em; font-weight: 800; white-space: nowrap; }
.brand-text small { font-size: 10px; color: var(--text-sub); letter-spacing: 2.6px; margin-top: 2px; opacity: .85; white-space: nowrap; }
.site-header.scrolled .brand-text small { opacity: 0; transition: opacity .2s; }
.top-actions { display: flex; align-items: center; gap: 12px; }
.hot-keywords { display: flex; align-items: center; gap: 6px; color: var(--text-weak); font-size: 13px; }
.hot-keywords .kw-label { color: var(--text-weak); margin-right: 4px; }
.hot-keywords a {
  color: var(--text-sub);
  border: 1px solid rgba(255,255,255,.12);
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  background: rgba(255,255,255,.03);
}
.hot-keywords a:hover { border-color: rgba(37,228,255,.5); color: var(--accent); background: rgba(37,228,255,.08); }
.search-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.04);
  color: var(--text-main);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all .2s ease;
}
.search-btn:hover { border-color: var(--accent); color: var(--accent); }
.search-panel { display: none; padding: 12px 0 16px; }
.search-panel form { display: flex; gap: 10px; }
.search-panel input[type="search"] {
  flex: 1;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.13);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  padding: 9px 16px;
  transition: border-color .2s;
}
.search-panel input[type="search"]:focus { outline: none; border-color: var(--accent); }
.search-panel .btn { flex: none; }
.header-search-open .search-panel { display: block; }

.channel-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  overflow-x: auto;
  scrollbar-width: none;
  min-height: 46px;
}
.channel-row::-webkit-scrollbar { display: none; }
.channel-nav { display: flex; align-items: center; gap: 32px; white-space: nowrap; }
.channel-nav a {
  position: relative;
  color: var(--text-sub);
  font-weight: 600;
  padding: 10px 0 12px;
  letter-spacing: .01em;
}
.channel-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  transition: width .25s ease;
}
.channel-nav a:hover { color: var(--accent); }
.channel-nav a:hover::after { width: 100%; }
.channel-nav a.active { color: var(--accent); }
.channel-nav a.active::after { width: 100%; }
.hot-tags { display: flex; align-items: center; gap: 6px; flex: none; }
.hot-tags .tag-label { font-size: 12px; color: var(--text-weak); padding-right: 4px; }
.hot-tags a {
  color: var(--text-sub);
  font-size: 12px;
  border: 1px solid rgba(255,255,255,.12);
  padding: 2px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,.03);
}
.hot-tags a:hover { border-color: rgba(37,228,255,.42); color: var(--accent); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-sm);
  border: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: all .22s ease;
  text-decoration: none;
}
.btn i { font-size: 13px; transition: transform .2s ease; }
.btn-primary {
  background: linear-gradient(135deg, #2B8CFF 0%, #25E4FF 100%);
  color: #04101F;
  box-shadow: var(--shadow-accent);
}
.btn-primary:hover { color: #04101F; filter: brightness(1.08); box-shadow: var(--shadow-hover); transform: translateY(-1px); }
.btn-primary:active { filter: brightness(.98); transform: translateY(1px); box-shadow: inset 0 1px 6px rgba(0,0,0,.2); }
.btn-ghost {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.16);
  color: var(--text-main);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); background: rgba(37,228,255,.06); }
.btn-light { background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18); color: var(--text-main); }
.btn-light:hover { background: rgba(255,255,255,.16); color: #fff; border-color: var(--accent); }
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 600;
}
.text-link i { transition: transform .2s ease; }
.text-link:hover i { transform: translateX(4px); }

/* Hero */
.page-hero {
  position: relative;
  padding: 84px 0 76px;
  background-image: linear-gradient(97deg, rgba(7,17,31,.88) 4%, rgba(7,17,31,.58) 58%, rgba(11,26,46,.48) 100%), url("/assets/images/backpic/back-2.png");
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid rgba(255,255,255,.06);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  right: -160px;
  top: -120px;
  border: 1px solid rgba(37,228,255,.14);
  border-radius: 50%;
  box-shadow: 0 0 0 28px rgba(37,228,255,.036), 0 0 0 58px rgba(37,228,255,.025);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}
.hero-copy .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--success);
  border: 1px solid rgba(63,224,180,.28);
  background: rgba(63,224,180,.09);
  padding: 3px 13px;
  border-radius: var(--radius-pill);
  margin-bottom: 22px;
}
.hero-copy .eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 5px rgba(63,224,180,.15); }
.page-hero h1 {
  font-size: clamp(36px, 5vw, 54px);
  letter-spacing: -0.02em;
  line-height: 1.18;
  margin-bottom: 20px;
  color: #F4FAFF;
}
.page-hero .lead { font-size: 17px; color: var(--text-sub); max-width: 580px; margin-bottom: 28px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 34px; }
.hero-tags span {
  font-size: 12px;
  color: var(--text-sub);
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.04);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.03);
  box-shadow: 0 30px 80px rgba(0,0,0,.35);
  margin: 0;
}
.hero-figure img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; }
.hero-figure figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 13px 18px;
  background: rgba(6,13,24,.72);
  border-top: 1px solid rgba(255,255,255,.1);
  font-size: 13px;
  color: var(--text-sub);
}
.hero-figure figcaption .status { display: inline-flex; align-items: center; gap: 7px; color: var(--success); }
.hero-figure figcaption .status i { font-size: 8px; }

/* Section common */
.sec-head { margin-bottom: 44px; }
.sec-head .kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.sec-head h2 { font-size: clamp(26px, 3vw, 34px); letter-spacing: .015em; margin-bottom: 12px; }
.sec-head p { color: var(--text-sub); max-width: 680px; }
.sec-head .head-link { margin-left: auto; align-self: flex-end; }
.sec-head-flex { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; }

/* Scenario */
.scenario-section .scenario-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 28px 0;
  border-top: 1px solid rgba(255,255,255,.07);
}
.scenario-section .scenario-row:first-of-type { border-top: 0; padding-top: 0; }
.scenario-media { order: 1; }
.scenario-row.flip .scenario-media { order: 2; }
.scenario-media .media-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.10);
  background: var(--glass-bg);
  box-shadow: 0 18px 50px rgba(0,0,0,.18);
}
.scenario-media img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.scenario-media .media-remark { padding: 12px 16px; font-size: 13px; color: var(--text-sub); border-top: 1px solid rgba(255,255,255,.08); background: rgba(255,255,255,.02); }
.scenario-text h3 { font-size: 23px; margin-bottom: 14px; }
.scenario-text p { color: var(--text-sub); }
.scenario-text .tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tag-pill { font-size: 12px; color: #D2E2F8; border: 1px solid rgba(43,140,255,.28); background: rgba(43,140,255,.10); padding: 3px 13px; border-radius: var(--radius-pill); }

/* Feature cards */
.card-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.09);
  border-radius: var(--radius-md);
  padding: 26px 24px;
  transition: all .24s ease;
  height: 100%;
}
.feature-card:hover { border-color: rgba(37,228,255,.48); transform: translateY(-4px); background: rgba(37,228,255,.04); box-shadow: 0 14px 40px rgba(0,0,0,.16); }
.feature-card .icon {
  width: 50px;
  height: 50px;
  border-radius: 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 18px;
  background: linear-gradient(135deg, rgba(43,140,255,.18), rgba(37,228,255,.18));
  border: 1px solid rgba(37,228,255,.24);
  color: var(--accent);
}
.feature-card h3 { font-size: 18px; margin-bottom: 10px; }
.feature-card p { color: var(--text-sub); font-size: 14.5px; margin-bottom: 16px; }
.mini-tag { font-size: 12px; color: var(--text-weak); }
.mini-tag i { color: var(--success); margin-right: 4px; font-size: 9px; }

/* Architecture */
.arch-block {
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(255,255,255,.02);
  box-shadow: 0 24px 80px rgba(0,0,0,.18);
}
.arch-media { position: relative; }
.arch-media img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.arch-media .arch-overlay {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  padding: 36px 32px 24px;
  background: linear-gradient(180deg, rgba(7,17,31,0) 0%, rgba(7,17,31,.9) 76%);
}
.arch-overlay h3 { color: #FFF; font-size: 23px; margin-bottom: 8px; }
.arch-overlay p { color: rgba(234,242,255,.82); font-size: 14px; max-width: 560px; }

/* Deploy steps */
.process-wrap { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.process-step {
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-md);
  padding: 22px 18px;
  position: relative;
  transition: all .22s ease;
}
.process-step:hover { border-color: rgba(37,228,255,.36); transform: translateY(-3px); }
.process-step .step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(37,228,255,.12);
  border: 1px solid rgba(37,228,255,.28);
  color: var(--accent);
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 16px;
}
.process-step h3 { font-size: 15px; margin-bottom: 8px; color: #EAF7FF; }
.process-step p { color: var(--text-sub); font-size: 13.5px; margin-bottom: 0; }

/* FAQ */
.faq-limited { max-width: 920px; margin: 0 auto; }
.faq-item {
  background: rgba(255,255,255,.025);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .2s ease;
}
.faq-item[open] { border-color: rgba(37,228,255,.40); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 24px;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .faq-icon { flex: none; color: var(--accent); transition: transform .2s ease; }
.faq-item[open] summary .faq-icon { transform: rotate(90deg); }
.faq-answer { padding: 0 48px 22px 24px; color: var(--text-sub); font-size: 15px; }

/* CTA + Form */
.cta-section {
  padding: 80px 0;
  background-image: linear-gradient(180deg, rgba(7,17,31,.82), rgba(7,17,31,.85)), url("/assets/images/backpic/back-3.png");
  background-size: cover;
  background-position: center;
}
.cta-panel {
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1.02fr;
  gap: 0;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.13);
  box-shadow: 0 30px 90px rgba(0,0,0,.28);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.cta-copy { padding: 40px 40px 34px; }
.cta-copy h2 { font-size: 28px; margin-bottom: 12px; }
.cta-copy > p { color: var(--text-sub); margin-bottom: 24px; }
.cta-list li { display: flex; gap: 14px; align-items: flex-start; padding: 10px 0; color: #D6E5F8; }
.cta-list li i { color: var(--success); margin-top: 6px; }
.cta-list li b { display: block; font-weight: 600; color: var(--text-main); margin-bottom: 2px; }
.cta-list li span { font-size: 14px; color: var(--text-sub); }
.cta-form-wrap { padding: 40px; background: rgba(6,13,24,.38); border-left: 1px solid rgba(255,255,255,.08); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: span 2; }
.field label { font-size: 13px; color: var(--text-sub); }
.field .req { color: var(--danger); margin-left: 3px; }
.field input, .field select, .field textarea {
  width: 100%;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(5,10,20,.35);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  transition: all .2s;
}
.field textarea { min-height: 88px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37,228,255,.12);
}
.field select option { background: #0B1A2E; color: var(--text-main); }
.field ::placeholder { color: #5C7394; opacity: 1; }
.form-note { font-size: 12px; color: var(--text-weak); margin-top: 12px; }
.form-success { display: none; margin-top: 12px; padding: 10px 14px; background: rgba(63,224,180,.12); border: 1px solid rgba(63,224,180,.3); color: var(--success); border-radius: var(--radius-sm); font-size: 14px; }
.form-success.show { display: block; }
.btn-submit { margin-top: 8px; }

/* Footer */
.site-footer { background: #050C16; border-top: 1px solid rgba(255,255,255,.07); padding-top: 48px; }
.footer-top {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 34px;
}
.footer-brand p { color: var(--text-sub); font-size: 14px; margin: 18px 0 0; max-width: 330px; }
.footer-brand .brand-logo { margin-bottom: 12px; }
.footer-col h5 { font-size: 15px; color: #C9DCFF; font-weight: 700; margin-bottom: 14px; letter-spacing: .02em; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul a { color: var(--text-sub); font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.footer-col ul a i { font-size: 10px; color: var(--text-weak); }
.footer-col ul a:hover { color: var(--accent); }
.footer-col ul a:hover i { color: var(--accent); transform: translateX(3px); transition: transform .2s ease; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.07);
  padding: 20px 0;
  font-size: 13px;
  color: var(--text-weak);
}
.footer-bottom-flex { flex-wrap: wrap; }

/* Responsive */
@media (max-width: 1100px) {
  .nav-gap { gap: 20px; }
  .card-grid-3 { gap: 18px; }
  .process-wrap { grid-template-columns: repeat(3, 1fr); row-gap: 18px; }
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .page-hero { padding: 60px 0 56px; }
  .scenario-section .scenario-row,
  .scenario-section .scenario-row.flip { grid-template-columns: 1fr; gap: 20px; }
  .scenario-section .scenario-row.flip .scenario-media { order: 1; }
  .card-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .cta-panel { grid-template-columns: 1fr; }
  .cta-form-wrap { border-left: 0; border-top: 1px solid rgba(255,255,255,.08); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 30px; }
  .footer-brand { grid-column: span 2; }
  .top-brand-inner { min-height: 54px; }
  .hot-keywords { display: none; }
}
@media (max-width: 639px) {
  :root { --section-space: 56px; }
  .container { padding: 0 16px; }
  .channel-row { padding: 0 16px; min-height: 42px; }
  .channel-nav { gap: 22px; overflow-x: auto; }
  .channel-nav a { font-size: 14px; }
  .hot-tags { display: none; }
  .filter-line { overflow-x: auto; }
  .card-grid-3 { grid-template-columns: 1fr; }
  .process-wrap { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .field.full { grid-column: span 1; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-brand { grid-column: span 1; }
  .cta-copy, .cta-form-wrap { padding: 28px 20px; }
  .hero-actions .btn { width: 100%; }
  .sec-head-flex { flex-direction: column; align-items: flex-start; }
  .brand-text small { display: none; }
  .search-btn { width: 36px; height: 36px; }
  .top-brand-inner { justify-content: space-between; }
}