/* roulang page: index */
:root{
  --color-bg-0:#060e1a;
  --color-bg-1:#0a1626;
  --color-bg-2:#0e1f33;
  --line-soft:rgba(130,180,230,.14);
  --line-glow:rgba(0,228,255,.25);
  --brand-blue:#2f7bff;
  --tech-cyan:#18d7ff;
  --neon-cyan:#00e8ff;
  --cta-orange:#ffb02e;
  --alert-red:#ff5a5a;
  --text-main:#f0f6fd;
  --text-body:#c5d5e6;
  --text-muted:#8098ad;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-tag:6px;
  --glass-grad:linear-gradient(160deg, rgba(45,90,140,.28), rgba(12,25,45,.72));
  --shadow-card:0 20px 50px rgba(0,5,15,.55);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","HarmonyOS Sans SC",system-ui,sans-serif;
}
*{box-sizing:border-box}
html,body{overflow-x:hidden}
body{
  margin:0;
  background:var(--color-bg-0);
  color:var(--text-body);
  font-family:var(--font-cn);
  font-size:15.5px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
html{scroll-padding-top:86px}
img{max-width:100%;height:auto;vertical-align:middle}
a{color:var(--tech-cyan);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--neon-cyan)}
:focus-visible{outline:2px solid var(--neon-cyan) !important;outline-offset:2px;border-radius:4px}
.btn:focus,.form-control:focus,.form-select:focus,.nav-link:focus{box-shadow:0 0 0 3px rgba(0,232,255,.18)!important;border-color:var(--neon-cyan)!important}
.container{max-width:1240px}
.section{padding:96px 0;position:relative}
.section-subhead{letter-spacing:2px;color:var(--neon-cyan);font-size:13px;font-weight:700;text-transform:uppercase;display:flex;align-items:center;gap:10px;margin-bottom:14px}
.section-subhead::before{content:"";width:10px;height:10px;background:var(--cta-orange);transform:rotate(45deg);display:inline-block;flex-shrink:0}
.section-title{font-size:clamp(26px,3vw,36px);font-weight:800;color:var(--text-main);line-height:1.3;letter-spacing:0;margin:0 0 18px}
.section-lead{font-size:16px;color:var(--text-body);max-width:680px;margin-bottom:0}
.bg-layer{background:var(--color-bg-1);position:relative}
.bg-layer::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(24,215,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(24,215,255,.04) 1px,transparent 1px);background-size:38px 38px;pointer-events:none}

/* navigation */
.navbar{
  padding:0;
  background:rgba(6,14,26,.92);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line-glow);
  min-height:72px;
  z-index:1040;
}
.navbar::after{
  content:"";
  display:block;
  height:2px;
  background:linear-gradient(90deg,transparent,var(--neon-cyan),var(--cta-orange),transparent);
  position:absolute;
  left:0;right:0;bottom:-1px;
}
.navbar-brand{display:flex;align-items:center;gap:12px;padding:0;margin-right:12px}
.brand-icon{
  width:42px;height:42px;border-radius:12px;
  background:linear-gradient(135deg,rgba(47,123,255,.25),rgba(0,232,255,.15));
  border:1px solid rgba(24,215,255,.45);
  display:flex;align-items:center;justify-content:center;
  color:var(--neon-cyan);font-size:21px;
  box-shadow:0 0 20px rgba(0,232,255,.12);
}
.brand-name{font-size:19px;font-weight:800;color:var(--text-main);letter-spacing:.3px;line-height:1.15}
.navbar-nav{gap:4px;align-items:center}
.navbar .nav-link{
  color:var(--text-body);
  font-size:15px;
  font-weight:500;
  padding:10px 14px !important;
  border-radius:6px;
  position:relative;
  transition:color .2s ease;
}
.navbar .nav-link:hover{color:var(--text-main)}
.navbar .nav-link.active,.navbar .nav-link[aria-current="page"]{color:var(--neon-cyan)}
.navbar .nav-link.active::before,.navbar .nav-link[aria-current="page"]::before{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:linear-gradient(90deg,var(--neon-cyan),transparent);
  border-radius:2px;
  box-shadow:0 0 8px rgba(0,232,255,.6);
}
.navbar .nav-link::before{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:linear-gradient(90deg,var(--neon-cyan),transparent);
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.navbar .nav-link:hover::before{transform:scaleX(1)}
.navbar .btn-brand{margin-left:22px}
.navbar-toggler{border:1px solid rgba(0,232,255,.35);border-radius:10px;padding:8px 12px;color:var(--neon-cyan);background:rgba(0,232,255,.06)}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(0,232,255,.2)}
@media(max-width:991.98px){
  .navbar-collapse{
    background:linear-gradient(160deg,rgba(16,35,56,.92),rgba(8,20,40,.96));
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border:1px solid var(--line-glow);
    border-radius:18px;
    padding:22px;
    margin-top:18px;
    position:absolute;left:0;right:0;top:100%;
    z-index:1050;
    box-shadow:var(--shadow-card);
  }
  .navbar .nav-link{padding:12px 10px !important;border-bottom:1px solid rgba(130,180,230,.08)}
  .navbar .nav-link.active::before{display:none}
  .navbar .btn-brand{margin:16px 0 0;width:100%;justify-content:center}
}

/* buttons */
.btn{border-radius:var(--radius-btn);font-weight:700;letter-spacing:.3px;transition:all .2s ease;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:11px 26px;font-size:15px}
.btn-brand{background:var(--cta-orange);color:#03131f;border:none;box-shadow:0 0 24px rgba(255,176,46,.2)}
.btn-brand:hover{background:#ffc05a;color:#03131f;transform:translateY(-2px);box-shadow:0 0 34px rgba(255,176,46,.4)}
.btn-brand:focus{box-shadow:0 0 0 3px rgba(255,176,46,.28)}
.btn-line{background:rgba(24,215,255,.04);border:1px solid rgba(24,215,255,.45);color:var(--tech-cyan)}
.btn-line:hover{background:rgba(24,215,255,.1);border-color:var(--neon-cyan);color:var(--neon-cyan);box-shadow:0 0 22px rgba(0,232,255,.1)}
.btn-lg{padding:14px 32px;font-size:16px}
.btn.disabled,.btn:disabled{opacity:.55;box-shadow:none;transform:none}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--tech-cyan);font-weight:600;font-size:14.5px;transition:gap .2s ease,color .2s}
.text-link i{transition:transform .2s}
.text-link:hover{color:var(--neon-cyan);gap:11px}
.text-link:hover i{transform:translateX(3px)}

/* hero */
.hero{
  position:relative;
  min-height:640px;
  display:flex;
  align-items:center;
  padding:96px 0 60px;
  background:linear-gradient(95deg, rgba(6,14,26,.95), rgba(6,14,26,.82) 62%, rgba(6,14,26,.35)), url('/assets/images/backpic/back-1.png') right top / cover no-repeat;
}
.hero::before{
  content:"";position:absolute;left:0;top:0;height:100%;width:340px;
  background:linear-gradient(90deg,rgba(0,232,255,.05),transparent);pointer-events:none;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(0,232,255,.08);border:1px solid rgba(0,232,255,.22);
  color:var(--neon-cyan);border-radius:100px;padding:5px 16px;
  font-size:13px;font-weight:600;letter-spacing:1px;margin-bottom:18px;
}
.hero-badge i{color:var(--cta-orange)}
.hero h1{font-size:clamp(31px,4.6vw,50px);font-weight:800;color:var(--text-main);line-height:1.28;margin:0 0 20px;letter-spacing:.5px}
.hero h1 span{color:var(--neon-cyan);position:relative;white-space:nowrap}
.hero-lead{font-size:17px;line-height:1.8;color:var(--text-body);max-width:570px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:18px;align-items:center}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:38px}
.hero-meta-item{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--text-muted)}
.hero-meta-item i{color:var(--tech-cyan);font-size:16px}

/* hero visual panel */
.hero-visual{position:relative}
.hero-visual-card{
  position:relative;
  border-radius:22px;
  background:var(--glass-grad);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line-glow);
  overflow:hidden;
  padding:12px;
  box-shadow:var(--shadow-card),0 0 0 1px rgba(255,255,255,.02) inset;
}
.hero-visual-card img{
  width:100%;height:390px;object-fit:cover;border-radius:14px;display:block;
  border:1px solid rgba(130,180,230,.12);
}
.visual-data-title{
  display:flex;justify-content:space-between;align-items:center;padding:14px 8px 4px;
  color:var(--text-main);font-size:14px;font-weight:700;letter-spacing:.4px;
}
.visual-data-title span{font-size:12px;color:var(--text-muted);font-weight:400}
.chip-list{display:flex;gap:8px;flex-wrap:wrap;padding:6px 8px 12px}
.chip{
  border:1px solid rgba(0,232,255,.24);
  background:rgba(0,232,255,.06);
  color:var(--tech-cyan);
  font-size:12px;
  border-radius:100px;
  padding:4px 12px;
  font-weight:500;
}
.float-stat{
  position:absolute;
  background:rgba(8,20,38,.9);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border:1px solid rgba(0,232,255,.3);
  border-radius:14px;
  padding:12px 18px;
  box-shadow:var(--shadow-card);
  display:flex;align-items:center;gap:12px;
}
.float-stat .num{font-size:24px;font-weight:800;color:var(--neon-cyan);font-variant-numeric:tabular-nums;line-height:1}
.float-stat .lbl{font-size:12px;color:var(--text-body);line-height:1.3}
.float-stat-1{top:9%;left:-18px}
.float-stat-2{bottom:9%;right:-15px}
.float-stat-2 .num{color:var(--cta-orange)}

/* status bar */
.stat-panel{
  background:var(--color-bg-1);
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-glow);
  padding:48px 0;
  position:relative;
}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.stat-item{
  text-align:center;
  border-left:1px solid var(--line-soft);
  padding:8px 6px;
}
.stat-item:first-child{border-left:none}
.stat-num{
  font-size:clamp(28px,3.6vw,42px);
  font-weight:800;
  color:var(--text-main);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.stat-num b{color:var(--neon-cyan);font-weight:800}
.stat-label{font-size:13.5px;color:var(--text-muted);margin-top:4px}
@media(max-width:767px){
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .stat-item:nth-child(3){border-left:none}
  .stat-item{border-top:1px solid var(--line-soft);padding-top:16px;border-left:0}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-top:none}
}

/* services cards */
.service-card{
  background:var(--glass-grad);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(130,180,230,.14);
  border-radius:var(--radius-card);
  padding:34px 28px;
  height:100%;
  position:relative;
  overflow:hidden;
  box-shadow:0 14px 40px rgba(2,8,18,.35);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.service-card::before{
  content:"";position:absolute;top:-1px;left:18px;right:18px;height:2px;
  background:linear-gradient(90deg,transparent,var(--neon-cyan),transparent);
  opacity:0;transition:opacity .25s ease;
}
.service-card:hover{transform:translateY(-5px);border-color:rgba(0,232,255,.36);box-shadow:0 22px 55px rgba(0,10,26,.45)}
.service-card:hover::before{opacity:1}
.service-icon{
  width:62px;height:62px;border-radius:16px;
  background:linear-gradient(135deg,rgba(47,123,255,.24),rgba(0,232,255,.12));
  border:1px solid rgba(24,215,255,.32);
  display:flex;align-items:center;justify-content:center;
  color:var(--neon-cyan);font-size:25px;
  margin-bottom:24px;
}
.service-card h3{font-size:21px;font-weight:700;color:var(--text-main);margin:0 0 12px}
.service-card p{color:var(--text-body);font-size:14.8px;line-height:1.8;margin-bottom:0}
.service-line{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:18px}
.service-line .chip{font-size:12.5px}

/* vertical steps */
.step-visual{
  border-left:1px solid rgba(24,215,255,.28);
  position:relative;
}
.step-item{padding:24px 0 24px 32px;position:relative}
.step-item::before{
  content:"";position:absolute;left:-5px;top:27px;width:9px;height:9px;border-radius:50%;
  background:var(--neon-cyan);box-shadow:0 0 14px rgba(0,232,255,.6);
}
.step-item::after{
  content:"";position:absolute;left:2px;top:62px;width:1px;height:calc(100% - 60px);
  background:linear-gradient(180deg, rgba(0,232,255,.2), transparent)
}
.step-item:last-child::after{display:none}
.step-no{display:inline-flex;align-items:center;gap:8px;color:var(--cta-orange);font-size:13px;font-weight:700;letter-spacing:2px;margin-bottom:10px}
.step-no i{font-size:14px}
.step-item h3{color:var(--text-main);font-size:20px;font-weight:700;margin-bottom:10px}
.step-item p{color:var(--text-body);font-size:14.5px;margin-bottom:12px;max-width:500px}
.step-item ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:7px}
.step-item li{position:relative;padding-left:22px;font-size:14px;color:var(--text-muted)}
.step-item li::before{content:"▸";position:absolute;left:0;top:0;color:var(--tech-cyan)}

/* price table */
.price-wrap{
  background:var(--glass-grad);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid var(--line-glow);
  border-radius:20px;
  overflow-x:auto;
  box-shadow:var(--shadow-card);
  padding:10px;
}
.table{--bs-table-bg:transparent;--bs-table-border-color:rgba(130,180,230,.12);color:var(--text-body);margin-bottom:0;border-collapse:separate;border-spacing:0;width:100%;min-width:920px}
.table thead th{
  background:rgba(8,22,40,.9);
  color:var(--text-main);
  font-weight:700;
  border-bottom:1px solid rgba(24,215,255,.25);
  font-size:16px;
  padding:20px 22px;
  text-align:center;
  white-space:nowrap;
}
.table thead th:first-child{text-align:left}
.table tbody td{
  padding:16px 22px;
  vertical-align:middle;
  border-bottom:1px solid var(--line-soft);
  color:var(--text-body);
  font-size:14px;
  text-align:center;
  background:transparent;
}
.table tbody tr:last-child td{border-bottom:none}
.table tbody td:first-child{text-align:left;color:var(--text-muted);font-weight:500}
.table tbody tr.plan-row-highlight th,.table tbody tr.plan-row-highlight td{background:rgba(255,176,46,.04)}
.plan-name{font-size:18px;font-weight:700;color:var(--text-main)}
.plan-price{font-size:25px;font-weight:800;color:var(--neon-cyan);line-height:1.3;display:block}
.plan-desc{font-size:12px;color:var(--text-muted);font-weight:400}
.recommend-tag{
  display:inline-block;
  background:var(--cta-orange);
  color:#04121c;
  font-size:12px;
  font-weight:700;
  padding:4px 15px;
  border-radius:0 0 12px 0;
  position:absolute;
  top:-1px;right:-1px;
  z-index:3;
  letter-spacing:.5px;
}
.plan-thead{position:relative}
.plan-thead-th-wrap{border:2px solid rgba(255,176,46,.4);border-top:none;border-bottom:none;box-shadow:0 0 30px rgba(255,176,46,.06)}
.plan-highlight-col{position:relative}
.plan-highlight-col:not(:first-child){background:rgba(255,176,46,.035)}
.plan-highlight-col th,.plan-highlight-col td{background:rgba(255,176,46,.035) !important}
.price-info-note{font-size:13px;color:var(--text-muted);margin-top:18px}

/* news area */
.news-card{
  border-radius:18px;
  border:1px solid rgba(130,180,230,.14);
  background:linear-gradient(160deg,rgba(30,62,98,.25),rgba(10,22,43,.9));
  overflow:hidden;
  display:flex;
  flex-direction:column;
  height:100%;
  position:relative;
  transition:border-color .25s ease,transform .25s ease;
}
.news-card:hover{border-color:rgba(0,232,255,.32);transform:translateY(-3px)}
.news-card-lg .news-thumb{height:250px;overflow:hidden;position:relative}
.news-card-lg .news-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(6,14,26,.5));pointer-events:none}
.news-thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .45s ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.news-cat{
  align-self:flex-start;
  background:rgba(0,232,255,.09);
  border:1px solid rgba(0,232,255,.22);
  color:var(--neon-cyan);
  font-size:12px;
  font-weight:600;
  border-radius:6px;
  padding:3px 10px;
  margin-bottom:12px;
  letter-spacing:.4px;
}
.news-card h3{font-size:18px;font-weight:700;color:var(--text-main);line-height:1.45;margin-bottom:8px}
.news-card p{color:var(--text-muted);font-size:14px;line-height:1.7;margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:14px;margin-top:auto;font-size:13px;color:var(--text-muted)}
.news-meta i{color:var(--tech-cyan);font-size:13px}
.news-card-sm{flex-direction:row;border-radius:14px;overflow:hidden;height:100%}
.news-card-sm .news-thumb{width:34%;min-width:130px;max-height:130px;overflow:hidden}
.news-card-sm .news-thumb img{width:100%;height:100%;min-height:115px;object-fit:cover}
.news-card-sm .news-body{padding:14px 18px}
.news-card-sm h3{font-size:15.5px;line-height:1.5;-webkit-line-clamp:2;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}
.news-card-sm p{-webkit-line-clamp:2;font-size:13px;margin-bottom:6px}
.empty-block{
  border:1px dashed rgba(130,180,230,.25);
  border-radius:18px;
  padding:54px 24px;
  text-align:center;
  color:var(--text-muted);
  background:rgba(10,22,43,.45);
}
.empty-block i{font-size:28px;color:var(--neon-cyan);opacity:.7;display:block;margin-bottom:12px}

/* campaign band */
.campaign{
  background:
    repeating-linear-gradient(135deg, rgba(0,232,255,.04) 0, rgba(0,232,255,.04) 1px, transparent 1px, transparent 16px),
    linear-gradient(120deg,#0a1c30,#0a2638 65%,#122f40);
  border-top:1px solid var(--line-glow);
  border-bottom:1px solid var(--line-glow);
  padding:60px 0;
  overflow:hidden;
  position:relative;
}
.campaign::after{
  content:"";position:absolute;width:430px;height:430px;right:-160px;top:-140px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,232,255,.12),transparent 67%);pointer-events:none;
}
.countdown{display:flex;align-items:center;gap:8px;font-variant-numeric:tabular-nums}
.cd-item{
  background:rgba(6,15,27,.85);
  border:1px solid rgba(0,232,255,.25);
  border-radius:10px;
  padding:8px 13px;
  text-align:center;
  min-width:64px;
}
.cd-item .num{font-size:25px;font-weight:800;color:var(--neon-cyan);line-height:1.1;font-variant-numeric:tabular-nums}
.cd-item .lbl{font-size:11px;color:var(--text-muted);margin-top:2px}
.cd-dot{font-size:22px;font-weight:800;color:var(--tech-cyan);padding-bottom:18px;opacity:.6}

/* faq */
.faq-accordion .accordion-item{
  background:var(--glass-grad);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(130,180,230,.16);
  border-radius:16px;
  margin-bottom:16px;
  overflow:hidden;
  box-shadow:0 10px 28px rgba(0,5,15,.3);
}
.faq-accordion .accordion-button{
  background:transparent;
  color:var(--text-main);
  font-size:16px;
  font-weight:600;
  padding:20px 22px;
  box-shadow:none;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--text-main);background:transparent}
.faq-accordion .accordion-button::after{
  background-image:none;
  content:"\f067";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  color:var(--neon-cyan);
  font-size:15px;
  width:auto;height:auto;
  transition:transform .2s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"\f068";transform:rotate(0)}
.faq-accordion .accordion-body{color:var(--text-body);padding:0 22px 22px;font-size:14.5px;line-height:1.85}
.faq-accordion .accordion-button:not(.collapsed){
  border-bottom:1px solid rgba(0,232,255,.1);
  border-radius:0;
}

/* pages features */
.sport-tile{
  background:var(--color-bg-1);
  border:1px solid rgba(130,180,230,.13);
  border-radius:16px;
  padding:20px;
  text-align:center;
  height:100%;
  transition:all .2s ease;
}
.sport-tile:hover{border-color:rgba(0,232,255,.32);transform:translateY(-3px);background:rgba(20,42,68,.5)}
.sport-tile i{font-size:30px;color:var(--neon-cyan);margin-bottom:10px}
.sport-tile h3{font-size:15px;color:var(--text-main);font-weight:700;margin:6px auto 4px}
.sport-tile p{font-size:12.5px;color:var(--text-muted);margin:0;line-height:1.6}

/* contact form */
.contact-panel{
  border-radius:20px;
  background:var(--glass-grad);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line-glow);
  padding:34px;
  box-shadow:var(--shadow-card);
  position:relative;
}
.form-control,.form-select{
  background:rgba(6,16,30,.65);
  border:1px solid rgba(130,180,230,.22);
  border-radius:10px;
  color:var(--text-main);
  padding:11px 15px;
  font-size:14.5px;
  transition:border-color .2s, box-shadow .2s;
}
.form-control:focus,.form-select:focus{
  background:rgba(6,16,30,.85);
  border-color:var(--neon-cyan);
  box-shadow:0 0 0 3px rgba(0,232,255,.12);
  color:var(--text-main);
}
.form-control::placeholder{color:rgba(159,184,204,.65)}
.form-select option{background:#0a1626;color:var(--text-main)}
.form-label{color:var(--text-main);font-size:13.5px;font-weight:600;margin-bottom:7px}
.contact-item{display:flex;gap:14px;margin-bottom:26px;align-items:flex-start}
.contact-item i{width:44px;height:44px;flex:0 0 44px;border-radius:12px;background:rgba(24,215,255,.08);border:1px solid rgba(24,215,255,.2);color:var(--neon-cyan);display:inline-flex;align-items:center;justify-content:center;font-size:18px}
.contact-item .t{font-size:13px;color:var(--text-muted)}
.contact-item .v{font-size:15px;color:var(--text-main);font-weight:600}

/* footer */
.site-footer{background:#040a13;border-top:2px solid rgba(0,232,255,.22);padding-top:70px;position:relative}
.site-footer::before{
  content:"";display:block;height:1px;background:linear-gradient(90deg,transparent,var(--neon-cyan),var(--cta-orange),transparent);
  position:absolute;top:-1px;left:0;right:0;
}
.site-footer h5{color:var(--text-main);font-size:17px;font-weight:700;margin-bottom:18px}
.site-footer p{color:var(--text-muted);font-size:14px;line-height:1.75}
.footer-link{list-style:none;padding:0;margin:0}
.footer-link a{color:var(--text-muted);font-size:14px;padding:6px 0;display:inline-block;transition:color .2s,padding-left .2s}
.footer-link a:hover{color:var(--neon-cyan);padding-left:5px}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-logo .brand-name{font-size:21px}
.footer-bottom{border-top:1px solid rgba(130,180,230,.12);padding:20px 0;margin-top:50px;font-size:13px;color:var(--text-muted)}

@media(max-width:991.98px){
  .hero{min-height:auto;background-image:linear-gradient(160deg,rgba(6,14,26,.94),rgba(6,14,26,.78)),url('/assets/images/backpic/back-1.png')}
  .hero h1{font-size:29px}
  .float-stat{position:static;display:inline-flex;margin-top:8px}
  .float-stat-1{margin-bottom:10px}
  .section{padding:72px 0}
  .step-item{padding:18px 0 18px 26px}
}
@media(max-width:767px){
  .section{padding:56px 0}
  .brand-name{font-size:16px}
  .brand-icon{width:36px;height:36px;font-size:17px}
  .hero{padding-top:78px}
  .hero h1{font-size:26px;line-height:1.35}
  .hero-lead{font-size:15.5px;margin-top:20px}
  .navbar .btn-brand{margin-left:0}
  .campaign{padding:48px 0}
  .contact-panel{padding:26px 20px}
}

/* roulang page: category1 */
:root{
  --color-bg-0:#060e1a;
  --color-bg-1:#0a1626;
  --color-bg-2:#0e1f33;
  --color-panel-1:#102438;
  --color-blue:#2f7bff;
  --color-cyan:#18d7ff;
  --color-cyan-2:#00e8ff;
  --color-orange:#ffb02e;
  --color-red:#ff5a5a;
  --color-text:#f0f6fd;
  --color-text-2:#c5d5e6;
  --color-text-3:#8098ad;
  --color-line:rgba(130,180,230,.14);
  --glass-bg:linear-gradient(160deg, rgba(45,90,140,.28), rgba(12,25,45,.72));
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:8px;
  --shadow-card:0 20px 50px rgba(0,5,15,.55);
}

*{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  margin:0;
  color:var(--color-text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","HarmonyOS Sans SC",system-ui,sans-serif;
  background-color:var(--color-bg-0);
  background-image:
    radial-gradient(circle at 15% 5%, rgba(33,80,149,.20), transparent 28%),
    radial-gradient(circle at 85% 35%, rgba(12,46,81,.18), transparent 30%);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}

a{
  color:inherit;
  text-decoration:none;
  transition:color .2s ease;
}

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

p{
  margin:0;
}

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

.container{
  max-width:1240px;
}

section{
  position:relative;
}

.section-pad{
  padding:96px 0;
}

.section-head{
  margin-bottom:48px;
}

.section-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--color-cyan);
  background:rgba(0,232,255,.08);
  border:1px solid rgba(0,232,255,.22);
  padding:7px 14px;
  border-radius:6px;
  margin-bottom:16px;
  font-variant-numeric:tabular-nums;
}

.section-kicker::before{
  content:"";
  display:inline-block;
  width:6px;
  height:6px;
  background:var(--color-orange);
  border-radius:2px;
  transform:rotate(45deg);
}

h1,h2,h3,h4,h5{
  line-height:1.3;
  font-weight:700;
  margin:0;
}

h2{
  font-size:32px;
  color:#f5faff;
  letter-spacing:.01em;
}

h3{
  font-size:20px;
  color:#f0f6fd;
}

.fw-medium{
  font-weight:500;
}

.text-muted-2{
  color:var(--color-text-2);
}

.text-muted-3{
  color:var(--color-text-3);
}

.btn{
  border-radius:10px;
  padding:.75rem 1.35rem;
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  border:1px solid transparent;
  transition:all .22s ease;
  letter-spacing:.02em;
}

.btn:focus-visible{
  outline:2px solid var(--color-cyan);
  outline-offset:2px;
  box-shadow:none;
}

.btn-brand{
  background:var(--color-orange);
  color:#160f05;
  border-color:var(--color-orange);
  box-shadow:0 0 24px rgba(255,176,46,.30);
}

.btn-brand:hover{
  background:#ffc35f;
  border-color:#ffc35f;
  color:#150e04;
  transform:translateY(-2px);
  box-shadow:0 0 30px rgba(255,176,46,.45);
}

.btn-brand:active{
  transform:translateY(0);
  box-shadow:0 0 14px rgba(255,176,46,.25);
}

.btn-cyan{
  background:rgba(0,232,255,.06);
  border-color:rgba(0,232,255,.42);
  color:#dffcff;
}

.btn-cyan:hover{
  background:rgba(0,232,255,.13);
  border-color:var(--color-cyan-2);
  color:#ffffff;
  box-shadow:0 0 18px rgba(0,232,255,.18);
  transform:translateY(-2px);
}

.btn:disabled,
.btn.disabled{
  opacity:.55;
  box-shadow:none!important;
  transform:none!important;
  pointer-events:none;
}

.btn-more{
  color:var(--color-cyan);
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  border:0;
  background:none;
  padding:0;
}

.btn-more i{
  transition:transform .2s ease;
}

.btn-more:hover,
.btn-more:focus-visible{
  color:#ffffff;
}

.btn-more:hover i{
  transform:translateX(6px);
}

/* 导航 */
.navbar{
  background:rgba(6,14,26,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--color-line);
  padding-top:14px;
  padding-bottom:14px;
}

.navbar::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:linear-gradient(90deg,transparent,var(--color-cyan-2),rgba(255,176,46,.75),transparent);
  opacity:.85;
}

.navbar-brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  margin:0;
  padding:0;
}

.navbar-brand:hover{
  opacity:1;
}

.brand-icon{
  width:40px;
  height:40px;
  flex:0 0 40px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--color-cyan);
  background:linear-gradient(135deg, rgba(0,232,255,.15), rgba(255,176,46,.18));
  border:1px solid rgba(0,232,255,.32);
  border-radius:12px;
  font-size:18px;
}

.brand-name{
  font-size:20px;
  font-weight:800;
  color:#fff;
  letter-spacing:.02em;
}

.brand-name span{
  color:var(--color-orange);
}

.navbar .nav-link{
  position:relative;
  color:var(--color-text-2);
  font-weight:600;
  padding:.55rem 1rem;
}

.navbar .nav-link::after{
  content:"";
  position:absolute;
  left:1rem;
  right:100%;
  bottom:-4px;
  height:2px;
  background:linear-gradient(90deg,var(--color-cyan-2),transparent);
  transition:right .25s ease;
  border-radius:2px;
}

.navbar .nav-link:hover{
  color:#ffffff;
}

.navbar .nav-link:hover::after{
  right:.9rem;
}

.navbar .nav-link.active{
  color:#ffffff;
}

.navbar .nav-link.active::after{
  right:.9rem;
  background:linear-gradient(90deg,var(--color-orange),var(--color-cyan-2),transparent);
}

.navbar .btn-brand{
  margin-left:18px;
  white-space:nowrap;
}

@media(max-width:991.98px){
  .navbar .navbar-brand{
    z-index:2;
  }
  .navbar-collapse{
    margin-top:16px;
    background:linear-gradient(165deg,rgba(13,28,48,.96),rgba(6,14,26,.97));
    border:1px solid var(--color-line);
    border-radius:var(--radius-lg);
    padding:14px 10px;
    max-height:78vh;
    overflow-y:auto;
    box-shadow:var(--shadow-card);
  }
  .navbar-collapse .nav-link{
    border-bottom:1px solid rgba(130,180,230,.10);
    padding:.8rem .8rem;
    border-radius:8px;
  }
  .navbar-collapse .nav-link:last-child{
    border-bottom:0;
  }
  .navbar-collapse .nav-link.active{
    background:rgba(0,232,255,.07);
  }
  .navbar-collapse .btn-brand{
    margin-left:0;
    margin-top:14px;
    width:100%;
  }
}

/* Hero */
.page-hero{
  padding:170px 0 88px;
  background-image:linear-gradient(90deg, rgba(6,14,26,.88) 0%, rgba(6,14,26,.68) 46%, rgba(6,14,26,.32) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--color-line);
  overflow:hidden;
}

.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(130,180,230,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(130,180,230,.05) 1px,transparent 1px);
  background-size:60px 60px;
  pointer-events:none;
}

.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--color-cyan);
  border:1px solid rgba(0,232,255,.3);
  background:rgba(0,232,255,.07);
  padding:7px 13px;
  border-radius:6px;
  margin-bottom:24px;
}

.page-hero h1{
  font-size:clamp(34px,4.6vw,56px);
  line-height:1.18;
  color:#f8fbff;
  margin-bottom:24px;
  max-width:820px;
}

.hero-lead{
  max-width:680px;
  color:var(--color-text-2);
  font-size:16px;
  line-height:1.85;
  margin-bottom:32px;
}

.hero-pills{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:36px;
}

.hero-pills li{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--color-text-2);
  font-size:14px;
  background:rgba(10,22,38,.65);
  border:1px solid rgba(130,180,230,.16);
  padding:8px 14px;
  border-radius:8px;
}

.hero-pills i{
  color:var(--color-orange);
  font-size:13px;
}

/* Feature list */
.feature-item{
  padding:50px 0;
  position:relative;
}

.feature-item + .feature-item{
  border-top:1px solid rgba(130,180,230,.12);
}

.feature-media{
  position:relative;
  border-radius:22px;
  overflow:hidden;
  border:1px solid rgba(0,232,255,.14);
  box-shadow:var(--shadow-card);
  background:var(--color-bg-2);
}

.feature-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  min-height:290px;
  transition:transform .55s ease;
}

.feature-item:hover .feature-media img{
  transform:scale(1.03);
}

.feature-media::after{
  content:"";
  position:absolute;
  inset:0;
  border-radius:22px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.06);
  pointer-events:none;
}

.feature-tag{
  display:inline-block;
  color:var(--color-cyan);
  background:rgba(0,232,255,.08);
  border:1px solid rgba(0,232,255,.25);
  border-radius:6px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.05em;
  padding:5px 11px;
  margin-bottom:18px;
}

.feature-copy h3{
  font-size:28px;
  margin-bottom:18px;
}

.feature-copy p{
  color:var(--color-text-2);
  margin-bottom:22px;
  font-size:15px;
}

/* 适用对象 */
.audience-section{
  background:linear-gradient(180deg, rgba(10,22,38,.45), rgba(6,14,26,.55));
}

.cards-gap{
  row-gap:24px;
}

.scenario-card{
  height:100%;
  background:var(--glass-bg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(130,180,230,.16);
  border-radius:var(--radius-lg);
  padding:34px 28px;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}

.scenario-card:hover{
  transform:translateY(-4px);
  border-color:rgba(0,232,255,.32);
  box-shadow:0 26px 60px rgba(0,5,15,.6), 0 0 18px rgba(0,232,255,.08);
}

.scenario-icon{
  width:52px;
  height:52px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  font-size:21px;
  color:var(--color-cyan);
  background:rgba(0,232,255,.09);
  border:1px solid rgba(0,232,255,.18);
  margin-bottom:22px;
}

.scenario-card h3{
  font-size:19px;
  margin-bottom:12px;
}

.scenario-card p{
  color:var(--color-text-2);
  font-size:14px;
}

/* 流程 */
.process-section{
  border-top:1px solid rgba(130,180,230,.10);
}

.process-step{
  position:relative;
  height:100%;
  background:rgba(16,36,56,.56);
  border:1px solid rgba(130,180,230,.14);
  border-radius:var(--radius-lg);
  padding:28px 22px;
  overflow:hidden;
}

.process-step::before{
  content:"";
  position:absolute;
  top:0;
  left:20px;
  right:20px;
  height:2px;
  background:linear-gradient(90deg,var(--color-cyan-2),transparent);
  opacity:.7;
}

.process-step .step-no{
  font-size:42px;
  line-height:1;
  color:rgba(255,176,46,.18);
  font-weight:800;
  margin-bottom:22px;
  font-variant-numeric:tabular-nums;
}

.process-step:nth-child(even) .step-no{
  color:rgba(24,215,255,.18);
}

.process-step h3{
  font-size:17px;
  margin-bottom:12px;
}

.process-step p{
  color:var(--color-text-3);
  font-size:14px;
  line-height:1.8;
}

/* 合作方式 */
.coop-section{
  border-bottom:1px solid rgba(130,180,230,.10);
}

.coop-title h2{
  margin-bottom:22px;
}

.coop-title p{
  color:var(--color-text-2);
  margin-bottom:22px;
}

.coop-card{
  background:rgba(13,28,48,.58);
  border:1px solid rgba(130,180,230,.14);
  border-radius:16px;
  padding:26px;
  margin-bottom:16px;
  transition:border-color .2s ease,background .2s ease;
}

.coop-card:hover{
  border-color:rgba(0,232,255,.25);
}

.coop-card i{
  color:var(--color-orange);
  margin-right:10px;
}

.coop-card strong{
  display:block;
  color:#eaf4ff;
  margin-bottom:6px;
  font-size:15px;
}

.coop-card span{
  color:var(--color-text-3);
  font-size:14px;
}

/* FAQ */
.faq-section{
  background:linear-gradient(180deg, rgba(10,22,38,.28), rgba(6,14,26,.6));
}

.faq-guide{
  padding-right:28px;
}

.faq-guide p{
  color:var(--color-text-2);
  margin-bottom:22px;
}

.accordion{
  --bs-accordion-color:var(--color-text-2);
  --bs-accordion-bg:transparent;
  --bs-accordion-border-color:rgba(130,180,230,.14);
  --bs-accordion-border-radius:14px;
  --bs-accordion-inner-border-radius:14px;
  --bs-accordion-body-padding-x:22px;
  --bs-accordion-body-padding-y:20px;
}

.accordion-item{
  background:var(--glass-bg);
  border:1px solid rgba(130,180,230,.15);
  border-radius:14px!important;
  margin-bottom:14px;
  overflow:hidden;
}

.accordion-button{
  background:transparent;
  color:#eef6ff;
  font-weight:600;
  font-size:16px;
  padding:20px 22px;
  box-shadow:none!important;
}

.accordion-button:focus-visible{
  outline:2px solid var(--color-cyan);
  outline-offset:-2px;
}

.accordion-button:hover{
  color:var(--color-cyan);
}

.accordion-button:not(.collapsed){
  color:#ffffff;
  background:rgba(0,232,255,.08);
  box-shadow:none;
}

.accordion-button::after{
  content:"\2b";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  background:none;
  width:22px;
  height:22px;
  color:var(--color-cyan);
  transition:transform .25s ease;
}

.accordion-button:not(.collapsed)::after{
  transform:rotate(135deg);
  color:var(--color-orange);
}

.accordion-body{
  color:var(--color-text-2);
  font-size:15px;
  border-top:1px solid rgba(130,180,230,.12);
  background:rgba(6,16,30,.28);
}

/* CTA contact */
.contact-cta{
  padding-top:70px;
}

.cta-panel{
  background:
    linear-gradient(120deg, rgba(47,123,255,.20), rgba(0,232,255,.04) 46%, rgba(6,14,26,.4)),
    url("/assets/images/backpic/back-2.webp") center/cover;
  background-color:var(--color-bg-2);
  border:1px solid rgba(130,180,230,.20);
  border-radius:24px;
  padding:64px 54px;
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}

.cta-panel::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  width:5px;
  height:100%;
  background:linear-gradient(180deg,var(--color-orange),var(--color-cyan-2));
}

.cta-title{
  font-size:30px;
  margin-bottom:18px;
}

.contact-method{
  background:rgba(8,18,32,.62);
  border:1px solid rgba(130,180,230,.18);
  border-radius:16px;
  padding:20px 22px;
}

.contact-method i{
  color:var(--color-orange);
  margin-right:8px;
}

.contact-method a{
  color:#ffffff;
  font-weight:600;
}

.contact-method a:hover{
  color:var(--color-cyan);
}

/* Footer */
.site-footer{
  background:#050c16;
  color:var(--color-text-2);
  border-top:1px solid rgba(130,180,230,.10);
  padding:72px 0 30px;
  margin-top:80px;
}

.site-footer::before{
  content:"";
  display:block;
  height:2px;
  width:100%;
  background:linear-gradient(90deg,transparent,rgba(0,232,255,.45),rgba(255,176,46,.45),transparent);
}

.footer-logo{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:16px;
}

.footer-logo .brand-icon{
  width:38px;
  height:38px;
  flex-basis:38px;
  font-size:16px;
}

.site-footer h5{
  font-size:16px;
  color:#fff;
  margin-bottom:18px;
}

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

.footer-link a{
  color:var(--color-text-3);
  font-size:14px;
}

.footer-link a:hover{
  color:var(--color-cyan);
}

.footer-bottom{
  border-top:1px solid rgba(130,180,230,.10);
  margin-top:46px;
  padding-top:26px;
  color:var(--color-text-3);
  font-size:13px;
}

/* Focus */
a:focus-visible,
button:focus-visible{
  outline:2px solid var(--color-cyan);
  outline-offset:2px;
}

/* Responsive */
@media(max-width:991.98px){
  .section-pad{
    padding:72px 0;
  }
  .page-hero{
    padding:140px 0 60px;
  }
  .page-hero h1{
    font-size:40px;
  }
  .feature-copy h3{
    font-size:24px;
  }
  .cta-panel{
    padding:44px 28px;
  }
  .cta-title{
    font-size:25px;
  }
  .faq-guide{
    padding-right:0;
    margin-bottom:28px;
  }
  .section-head{
    margin-bottom:32px;
  }
}

@media(max-width:767.98px){
  .section-pad{
    padding:56px 0;
  }
  .page-hero{
    padding:128px 0 48px;
  }
  .page-hero h1{
    font-size:32px;
  }
  h2{
    font-size:26px;
  }
  h3{
    font-size:19px;
  }
  .feature-item{
    padding:26px 0;
  }
  .feature-media img{
    min-height:220px;
  }
  .cta-panel{
    padding:36px 22px;
    border-radius:18px;
  }
  .footer-bottom{
    text-align:center;
  }
  .navbar-collapse{
    margin-top:12px;
  }
}

@media(max-width:520px){
  .hero-tag{
    font-size:12px;
  }
  .page-hero h1{
    font-size:30px;
  }
  .hero-pills{
    gap:8px;
  }
  .hero-pills li{
    width:100%;
  }
  .brand-icon{
    width:34px;
    height:34px;
    flex-basis:34px;
  }
  .brand-name{
    font-size:18px;
  }
  .btn{
    width:100%;
    justify-content:center;
  }
  .btn-more{
    width:auto;
  }
}

/* roulang page: article */
:root {
  --bg-0: #060e1a;
  --bg-1: #0a1626;
  --bg-2: #0e1f33;
  --line: rgba(130, 180, 230, .14);
  --line-bright: rgba(0, 228, 255, .25);
  --brand-blue: #2f7bff;
  --tech-cyan: #18d7ff;
  --neon-cyan: #00e8ff;
  --cta-orange: #ffb02e;
  --warn-red: #ff5a5a;
  --heading: #f0f6fd;
  --body: #c5d5e6;
  --muted: #8098ad;
  --radius: 18px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --shadow: 0 20px 50px rgba(0, 5, 15, .55);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "HarmonyOS Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.75;
  color: var(--body);
  background-color: var(--bg-0);
  background-image:
    radial-gradient(circle at 18% 8%, rgba(26, 78, 135, .32), transparent 34%),
    linear-gradient(135deg, rgba(0, 228, 255, .025) 25%, transparent 25%, transparent 50%, rgba(0, 228, 255, .02) 50%, rgba(0, 228, 255, .02) 75%, transparent 75%);
  background-size: auto, 460px 460px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
*, *::before, *::after {
  box-sizing: border-box;
}
img {
  max-width: 100%;
  height: auto;
}
a {
  text-decoration: none;
}
a, button, input, textarea, select {
  transition: all .2s ease;
}
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--neon-cyan) !important;
  outline-offset: 3px;
}
::selection {
  background: rgba(0, 228, 255, .24);
  color: #fff;
}
h1, h2, h3, h4, h5, h6 {
  color: var(--heading);
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 12px;
}
p {
  margin: 0 0 16px;
}
.btn {
  border-radius: var(--radius-sm);
  font-weight: 600;
  padding: .68rem 1.25rem;
  font-size: 15px;
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  line-height: 1.4;
}
.btn-brand {
  background: var(--cta-orange);
  color: #081322;
  border-color: var(--cta-orange);
  box-shadow: 0 0 24px rgba(255, 176, 46, .28);
}
.btn-brand:hover {
  color: #081322;
  background: #ffc45f;
  border-color: #ffc45f;
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(255, 176, 46, .42);
}
.btn-brand:active {
  transform: translateY(0);
  box-shadow: none;
}
.btn-cyan-outline {
  background: rgba(0, 228, 255, .04);
  color: var(--neon-cyan);
  border-color: rgba(0, 228, 255, .42);
}
.btn-cyan-outline:hover {
  background: rgba(0, 228, 255, .12);
  color: #fff;
  border-color: var(--neon-cyan);
  box-shadow: 0 0 18px rgba(0, 228, 255, .18);
}
.btn-brand:disabled,
.btn-cyan-outline:disabled {
  opacity: .55;
  transform: none;
  box-shadow: none;
  cursor: not-allowed;
}
.btn-sm {
  padding: .44rem .95rem;
  font-size: 13.5px;
}
#mainNav {
  padding: 14px 0;
  background: rgba(6, 14, 26, .9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  position: relative;
}
#mainNav::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  z-index: 2;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), var(--cta-orange), transparent);
  opacity: .8;
  pointer-events: none;
}
#mainNav .navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: .5px;
  margin-right: 26px;
}
#mainNav .brand-icon {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--brand-blue), var(--neon-cyan));
  color: #061626;
  font-size: 17px;
  box-shadow: 0 0 18px rgba(0, 228, 255, .32);
}
#mainNav .brand-name {
  background: linear-gradient(90deg, #f2f8ff, #c1ecff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
#mainNav .navbar-nav .nav-link {
  font-size: 15px;
  color: #cbdbea;
  font-weight: 500;
  padding: .55rem .8rem;
  margin: 0 .15rem;
  position: relative;
  white-space: nowrap;
}
#mainNav .navbar-nav .nav-link::after {
  content: "";
  position: absolute;
  left: .75rem;
  right: 100%;
  bottom: .35rem;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-cyan), transparent);
  transition: right .2s ease;
  border-radius: 2px;
}
#mainNav .navbar-nav .nav-link:hover {
  color: #fff;
}
#mainNav .navbar-nav .nav-link:hover::after {
  right: .75rem;
}
#mainNav .navbar-nav .nav-link.active {
  color: var(--neon-cyan);
}
#mainNav .navbar-nav .nav-link.active::after {
  right: .75rem;
  box-shadow: 0 0 10px rgba(0, 228, 255, .5);
}
#mainNav .navbar-toggler {
  border: 1px solid rgba(0, 228, 255, .28);
  color: var(--neon-cyan);
  background: transparent;
  border-radius: 10px;
  box-shadow: none !important;
  width: 46px;
  height: 42px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
#mainNav .navbar-toggler:focus {
  outline: 2px solid rgba(0, 228, 255, .45);
}
#mainNav .btn-brand {
  margin-left: 1.1rem;
  line-height: 1;
}
@media (max-width: 991.98px) {
  #mainNav .navbar-collapse {
    background: rgba(8, 20, 36, .96);
    border: 1px solid var(--line-bright);
    border-radius: 16px;
    padding: 18px;
    margin-top: 14px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(20px);
  }
  #mainNav .navbar-nav {
    gap: 4px;
  }
  #mainNav .navbar-nav .nav-link {
    padding: .85rem .9rem;
    border-bottom: 1px solid rgba(130, 180, 230, .12);
  }
  #mainNav .navbar-nav .nav-link:last-child {
    border-bottom: none;
  }
  #mainNav .navbar-nav .nav-link::after {
    display: none;
  }
  #mainNav .navbar-nav .nav-link.active {
    color: var(--neon-cyan);
    padding-left: 1.1rem;
  }
}
.article-hero {
  position: relative;
  padding: 150px 0 54px;
  background:
    linear-gradient(95deg, rgba(6, 14, 26, .95) 0%, rgba(6, 14, 26, .72) 55%, rgba(10, 28, 48, .55) 100%),
    url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
  border-bottom: 1px solid rgba(0, 228, 255, .12);
}
.article-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(135deg, rgba(255,255,255,.028) 0 1px, transparent 1px 16px);
  mix-blend-mode: soft-light;
}
.article-hero .container {
  position: relative;
  z-index: 2;
}
.article-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--muted);
  margin-bottom: 20px;
}
.article-breadcrumb a {
  color: #9db4ca;
  border-bottom: 1px solid transparent;
}
.article-breadcrumb a:hover {
  color: var(--neon-cyan);
  border-color: rgba(0, 228, 255, .6);
}
.crumb-arrow {
  width: 5px;
  height: 5px;
  border-right: 1.5px solid #526a80;
  border-top: 1.5px solid #526a80;
  transform: rotate(45deg);
}
.article-breadcrumb .crumb-now {
  color: #b3cadd;
  max-width: 300px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.article-hero-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: .5px;
  color: var(--neon-cyan);
  border: 1px solid rgba(0, 228, 255, .3);
  background: rgba(0, 228, 255, .06);
  padding: 4px 14px;
  border-radius: 40px;
  margin-bottom: 16px;
}
.article-hero h1 {
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.24;
  max-width: 900px;
  margin: 0 0 16px;
  font-weight: 800;
  letter-spacing: -1px;
  color: #f6fbff;
}
.article-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  font-size: 14px;
  color: var(--muted);
  align-items: center;
}
.article-hero-meta i {
  color: var(--tech-cyan);
  width: 18px;
}
.article-hero-meta strong {
  font-weight: 600;
  color: #c8dcee;
  font-variant-numeric: tabular-nums;
}
@media (max-width: 767.98px) {
  .article-hero {
    padding: 122px 0 38px;
  }
  .article-hero h1 {
    font-size: 28px;
    letter-spacing: 0;
  }
  .article-breadcrumb .crumb-now {
    max-width: 220px;
    display: block;
  }
}
.article-content-section {
  padding: 58px 0 72px;
  background:
    radial-gradient(circle at 10% 8%, rgba(20, 76, 128, .22), transparent 34%),
    linear-gradient(180deg, var(--bg-0), var(--bg-1));
}
.article-content-section .row {
  align-items: stretch;
}
.article-sheet {
  background: linear-gradient(160deg, rgba(22, 45, 75, .42), rgba(8, 18, 34, .72));
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: clamp(24px, 3.2vw, 48px);
  box-shadow: var(--shadow);
  height: 100%;
  position: relative;
  backdrop-filter: blur(10px);
}
.article-sheet::before {
  content: "";
  position: absolute;
  left: 22px;
  right: 22px;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(0,228,255,.2), rgba(47,123,255,.28), transparent);
}
.article-entry {
  color: #d6e6f4;
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: .1px;
  word-break: break-word;
}
.article-entry p {
  margin: 0 0 24px;
}
.article-entry h2 {
  font-size: 26px;
  font-weight: 700;
  color: #edf6ff;
  margin: 40px 0 18px;
  padding-left: 14px;
  border-left: 4px solid var(--tech-cyan);
  line-height: 1.35;
}
.article-entry h3 {
  font-size: 20px;
  font-weight: 700;
  color: #dff0ff;
  margin: 30px 0 12px;
}
.article-entry ul,
.article-entry ol {
  margin: 0 0 24px;
  padding-left: 24px;
}
.article-entry li {
  margin-bottom: 9px;
}
.article-entry blockquote {
  margin: 28px 0;
  padding: 18px 22px;
  border: 1px solid rgba(0, 228, 255, .12);
  border-left: 3px solid var(--neon-cyan);
  background: rgba(0, 228, 255, .04);
  color: #bed7ea;
  border-radius: 4px 14px 14px 4px;
}
.article-entry img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 14px;
  margin: 30px auto;
  box-shadow: 0 12px 30px rgba(0, 8, 20, .45);
}
.article-entry figcaption {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}
.article-entry table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14.5px;
  color: #ccddec;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  display: block;
  overflow-x: auto;
}
.article-entry table thead {
  background: #102438;
}
.article-entry table th {
  background: linear-gradient(135deg, #142c48, #10243b);
  color: #e9f4ff;
  padding: 13px 16px;
  border: 1px solid var(--line);
  font-weight: 700;
  white-space: nowrap;
}
.article-entry table td {
  padding: 12px 16px;
  border: 1px solid var(--line);
  background: rgba(8, 22, 39, .35);
  vertical-align: top;
}
.article-entry table tr:hover td {
  background: rgba(18, 48, 80, .28);
}
.article-entry code {
  background: rgba(0, 228, 255, .08);
  color: #9ff3ff;
  border-radius: 6px;
  padding: 2px 7px;
  font-size: .9em;
}
.article-entry pre {
  background: #081324;
  border: 1px solid rgba(130, 180, 230, .18);
  border-radius: 14px;
  padding: 18px;
  overflow-x: auto;
  color: #c8e1f4;
}
.article-entry a {
  color: var(--neon-cyan);
  border-bottom: 1px solid rgba(0, 228, 255, .3);
  word-break: break-word;
}
.article-entry a:hover {
  color: #fff;
  border-color: #fff;
}
.article-entry hr {
  border: none;
  height: 1px;
  margin: 30px 0;
  background: linear-gradient(90deg, transparent, var(--line-bright), transparent);
}
.article-toolbar {
  margin-top: 38px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.article-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.article-tag {
  display: inline-block;
  font-size: 12.5px;
  color: #a5cde1;
  border: 1px solid rgba(0, 228, 255, .25);
  background: rgba(0, 228, 255, .05);
  padding: 4px 12px;
  border-radius: 6px;
}
.article-tag i {
  margin-right: 5px;
  color: var(--neon-cyan);
}
.article-back-area {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.article-empty {
  min-height: 220px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px;
  color: var(--muted);
}
.article-empty i {
  font-size: 42px;
  color: #2f6b95;
  margin-bottom: 20px;
}
.article-empty h2 {
  color: #c5dcee;
  font-size: 24px;
  margin-bottom: 10px;
}
.aside-card {
  background: linear-gradient(160deg, rgba(20, 46, 78, .28), rgba(10, 20, 38, .62));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 22px;
  box-shadow: 0 12px 30px rgba(0, 5, 15, .25);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}
.aside-card h4 {
  font-size: 17px;
  font-weight: 700;
  padding-left: 12px;
  position: relative;
  color: #e6f2ff;
  margin-bottom: 18px;
}
.aside-card h4::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--neon-cyan), var(--brand-blue));
}
.aside-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.aside-list li {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(130, 180, 230, .16);
  font-size: 14px;
}
.aside-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.aside-list .info-label {
  color: #7f9cb5;
  flex-shrink: 0;
}
.aside-list .info-value {
  color: #cfdded;
  text-align: right;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  word-break: break-word;
}
.aside-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #bfd4e6;
  font-size: 14.5px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(130, 180, 230, .12);
}
.aside-nav-link:last-child {
  border-bottom: none;
}
.aside-nav-link:hover {
  color: var(--neon-cyan);
  padding-left: 6px;
}
.aside-nav-link i {
  width: 26px;
  text-align: center;
  color: var(--tech-cyan);
}
.aside-contact {
  background:
    linear-gradient(150deg, rgba(47, 123, 255, .15), transparent 70%),
    linear-gradient(160deg, rgba(14, 33, 60, .86), rgba(8, 20, 38, .88));
  border: 1px solid rgba(47, 123, 255, .22);
  box-shadow: 0 0 30px rgba(47, 123, 255, .08);
}
.aside-contact p {
  font-size: 13.5px;
}
.aside-contact .btn {
  margin-bottom: 10px;
}
.related-section {
  padding: 62px 0 72px;
  background:
    radial-gradient(circle at 80% 20%, rgba(0, 90, 140, .16), transparent 28%),
    linear-gradient(180deg, var(--bg-1), var(--bg-0));
  border-top: 1px solid rgba(0, 228, 255, .1);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}
.section-head .title-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--cta-orange);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 5px;
}
.section-head h2 {
  font-size: 30px;
  margin: 0;
}
.section-head .section-more {
  color: var(--muted);
  font-size: 14px;
  border-bottom: 1px solid transparent;
}
.section-head .section-more:hover {
  color: var(--neon-cyan);
  border-color: rgba(0, 228, 255, .55);
}
.related-card {
  height: 100%;
}
.related-card .card-link {
  height: 100%;
  display: flex;
  flex-direction: column;
  background: linear-gradient(160deg, rgba(18, 38, 68, .52), rgba(7, 16, 30, .6));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  box-shadow: 0 14px 28px rgba(0, 5, 15, .2);
  color: inherit;
}
.related-card .card-link:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 228, 255, .36);
  box-shadow: 0 24px 48px rgba(0, 20, 42, .45);
  color: inherit;
}
.related-card .cover {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #0b1727;
}
.related-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
  opacity: .92;
}
.related-card .card-link:hover .cover img {
  transform: scale(1.05);
}
.related-tag {
  position: absolute;
  left: 12px;
  top: 12px;
  background: rgba(6, 16, 28, .84);
  border: 1px solid rgba(0, 228, 255, .35);
  color: var(--neon-cyan);
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 6px;
  backdrop-filter: blur(8px);
}
.related-body {
  padding: 20px 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.related-body h3 {
  font-size: 18px;
  margin: 0;
  line-height: 1.4;
  font-weight: 700;
}
.related-body p {
  color: #9bb4c9;
  font-size: 14px;
  flex: 1;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  padding-top: 10px;
  border-top: 1px solid rgba(130, 180, 230, .12);
}
.related-meta .go-link i {
  color: var(--tech-cyan);
  transition: transform .2s ease;
}
.related-card .card-link:hover .go-link i {
  transform: translateX(4px);
}
.site-footer {
  background: #050c15;
  border-top: 2px solid rgba(0, 228, 255, .2);
  padding: 60px 0 26px;
  color: #89a2b8;
  font-size: 14px;
  position: relative;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
  opacity: .6;
}
.site-footer h5 {
  color: #dfeffc;
  font-size: 16px;
  margin-bottom: 16px;
  letter-spacing: .3px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #e9f4fe;
  margin-bottom: 13px;
}
.footer-logo .brand-icon {
  background: linear-gradient(135deg, var(--brand-blue), var(--neon-cyan));
  width: 38px;
  height: 38px;
  border-radius: 12px;
  color: #081424;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}
.footer-link {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-link li + li {
  margin-top: 9px;
}
.footer-link a {
  color: #8ea9c0;
}
.footer-link a:hover {
  color: var(--neon-cyan);
}
.footer-bottom {
  border-top: 1px solid rgba(130, 180, 230, .12);
  margin-top: 34px;
  padding-top: 20px;
  font-size: 13px;
  color: #6d859a;
}
@media (max-width: 991.98px) {
  .article-content-section {
    padding: 44px 0 56px;
  }
  .related-section {
    padding: 50px 0 58px;
  }
  .section-head h2 {
    font-size: 26px;
  }
}
@media (max-width: 767.98px) {
  .article-sheet {
    padding: 24px 18px;
  }
  .article-entry {
    font-size: 15.5px;
  }
  .article-entry h2 {
    font-size: 22px;
  }
  .article-toolbar {
    flex-direction: column;
    align-items: flex-start;
  }
  .article-hero-meta {
    gap: 8px 14px;
    font-size: 13px;
  }
  .site-footer {
    padding-top: 48px;
  }
  .section-head h2 {
    font-size: 24px;
  }
  .related-body h3 {
    font-size: 17px;
  }
}
@media (max-width: 575.98px) {
  .article-hero h1 {
    font-size: 24px;
  }
  .article-entry {
    line-height: 1.78;
  }
  .btn {
    min-height: 44px;
  }
  .dropdown-menu {
    min-width: 0;
  }
}

/* roulang page: category2 */
:root {
            --color-bg-0: #060e1a;
            --color-bg-1: #0a1626;
            --color-bg-2: #0e1f33;
            --color-line: rgba(130, 180, 230, .14);
            --color-line-bright: rgba(0, 228, 255, .25);
            --brand-blue: #2f7bff;
            --tech-cyan: #18d7ff;
            --neon-cyan: #00e8ff;
            --cta-orange: #ffb02e;
            --alert-red: #ff5a5a;
            --text-light: #f0f6fd;
            --text-mid: #c5d5e6;
            --text-dim: #8098ad;
            --card-glass: linear-gradient(160deg, rgba(45, 90, 140, .28), rgba(12, 25, 45, .72));
            --card-glass-solid: #102438;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-tag: 6px;
            --shadow-card: 0 20px 50px rgba(0, 5, 15, .55);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "HarmonyOS Sans SC", system-ui, sans-serif;
            --space-section: 96px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg-0);
            background-image: radial-gradient(ellipse at 20% 0%, rgba(47, 123, 255, .10) 0%, transparent 55%),
                radial-gradient(ellipse at 90% 15%, rgba(0, 228, 255, .05) 0%, transparent 45%);
            color: var(--text-mid);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        ::selection {
            background: rgba(0, 228, 255, .22);
            color: #f0f6fd;
        }

        :focus-visible {
            outline: 2px solid var(--neon-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

        a {
            color: var(--text-mid);
            text-decoration: none;
            transition: color .2s ease, border-color .2s ease, box-shadow .2s ease;
        }

        a:hover {
            color: var(--neon-cyan);
        }

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

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

        .section {
            padding: var(--space-section) 0;
            position: relative;
        }

        .section-sm {
            padding: 56px 0;
        }

        .text-dim {
            color: var(--text-dim);
        }

        .text-cyan {
            color: var(--neon-cyan);
        }

        .bg-grid-overlay {
            position: relative;
        }

        .bg-grid-overlay::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(0, 228, 255, .04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 228, 255, .04) 1px, transparent 1px);
            background-size: 42px 42px;
            pointer-events: none;
            z-index: 0;
        }

        .bg-scanline::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 240px;
            background: linear-gradient(180deg, rgba(0, 232, 255, .03), transparent);
            pointer-events: none;
            z-index: 0;
        }

        .section-title {
            font-size: clamp(28px, 3vw, 38px);
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: .01em;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-dim);
            max-width: 640px;
            line-height: 1.8;
        }

        .title-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: .12em;
            text-transform: uppercase;
            color: var(--cta-orange);
            margin-bottom: 18px;
        }

        .title-badge::before {
            content: "";
            width: 10px;
            height: 10px;
            background: var(--cta-orange);
            display: block;
            transform: rotate(45deg);
        }

        .title-badge--cyan::before {
            background: var(--neon-cyan);
        }

        .title-badge--cyan {
            color: var(--neon-cyan);
        }

        /* 导航 */
        #mainNav {
            background: rgba(6, 14, 26, .92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 2px solid transparent;
            border-image: linear-gradient(90deg, transparent, #00e8ff, #ffb02e, transparent);
            border-image-slice: 1;
            padding-top: 12px;
            padding-bottom: 12px;
        }

        #mainNav::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(0, 228, 255, .6), rgba(255, 176, 46, .6), transparent);
            pointer-events: none;
        }

        #mainNav .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-right: 24px;
        }

        #mainNav .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--brand-blue), var(--neon-cyan));
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            color: #fff;
            box-shadow: 0 0 18px rgba(0, 228, 255, .3);
        }

        #mainNav .brand-name {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: .01em;
            line-height: 1.2;
        }

        #mainNav .navbar-nav {
            gap: 2px;
        }

        #mainNav .nav-link {
            color: var(--text-mid);
            font-weight: 500;
            padding: 10px 14px;
            position: relative;
            border-radius: 6px;
            font-size: 15px;
            transition: color .25s ease;
        }

        #mainNav .nav-link::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--neon-cyan);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .25s ease, box-shadow .25s ease;
            border-radius: 2px;
        }

        #mainNav .nav-link:hover {
            color: #eaf6ff;
        }

        #mainNav .nav-link:hover::after {
            transform: scaleX(1);
            box-shadow: 0 0 8px rgba(0, 232, 255, .6);
        }

        #mainNav .nav-link.active {
            color: var(--neon-cyan);
            font-weight: 600;
        }

        #mainNav .nav-link.active::after {
            transform: scaleX(1);
            box-shadow: 0 0 10px rgba(0, 232, 255, .7);
        }

        .btn-brand {
            background: linear-gradient(135deg, #ffb02e, #ff9d1c) !important;
            color: #081626 !important;
            font-weight: 800;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            box-shadow: 0 0 24px rgba(255, 176, 46, .28);
            transition: transform .2s, box-shadow .2s, filter .2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-brand:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(255, 176, 46, .45);
            filter: brightness(1.05);
            color: #081626;
        }

        .btn-brand:active {
            transform: translateY(0);
            filter: brightness(.95);
        }

        .btn-brand:disabled {
            opacity: .55;
            filter: grayscale(.3);
            box-shadow: none;
            transform: none;
            pointer-events: none;
        }

        .btn-cyan-outline {
            background: rgba(0, 228, 255, .06);
            border: 1px solid rgba(0, 228, 255, .5);
            color: var(--neon-cyan);
            border-radius: var(--radius-btn);
            font-weight: 600;
            padding: 10px 22px;
            transition: all .22s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-cyan-outline:hover {
            border-color: var(--neon-cyan);
            box-shadow: 0 0 20px rgba(0, 228, 255, .18);
            background: rgba(0, 228, 255, .10);
            color: var(--neon-cyan);
        }

        .btn-cyan-outline:active {
            transform: scale(.98);
        }

        .btn-text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-mid);
            font-weight: 600;
            padding: 8px 0;
        }

        .btn-text-link i {
            transition: transform .22s ease;
        }

        .btn-text-link:hover {
            color: var(--neon-cyan);
        }

        .btn-text-link:hover i {
            transform: translateX(5px);
        }

        .btn-text-link::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--neon-cyan);
            transition: width .25s;
        }

        .btn-text-link {
            position: relative;
        }

        .btn-text-link:hover::after {
            width: 100%;
        }

        .btn-nav-mobile {
            color: var(--neon-cyan) !important;
            font-size: 22px;
            border: 1px solid rgba(0, 228, 255, .4);
            border-radius: 8px;
            padding: 6px 10px;
            line-height: 1;
        }

        /* Hero 区块 */
        .category-hero {
            padding-top: 170px;
            padding-bottom: 70px;
            position: relative;
            overflow: hidden;
            background:
                linear-gradient(rgba(6, 14, 26, .88), rgba(6, 14, 26, .45)),
                url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
        }

        .category-hero .hero-content {
            max-width: 760px;
            position: relative;
            z-index: 1;
            padding-left: clamp(20px, 5vw, 5%);
        }

        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            font-weight: 600;
            color: var(--neon-cyan);
            background: rgba(0, 228, 255, .06);
            border: 1px solid rgba(0, 228, 255, .3);
            border-radius: 40px;
            padding: 6px 16px;
            margin-bottom: 24px;
            letter-spacing: .06em;
        }

        .category-hero h1 {
            font-size: clamp(30px, 4vw, 44px);
            font-weight: 800;
            color: #fff;
            line-height: 1.22;
            margin-bottom: 20px;
        }

        .category-hero .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(197, 213, 230, .9);
            max-width: 640px;
            margin-bottom: 30px;
        }

        .category-hero .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 20px 32px;
            margin-top: 18px;
        }

        .hero-stats .stat-item {
            border-left: 3px solid rgba(0, 228, 255, .5);
            padding-left: 14px;
        }

        .hero-stats .stat-num {
            font-size: 22px;
            font-weight: 800;
            color: var(--neon-cyan);
            font-variant-numeric: tabular-nums;
            display: block;
            line-height: 1.2;
        }

        .hero-stats .stat-label {
            font-size: 13px;
            color: var(--text-dim);
            letter-spacing: .02em;
        }

        .hero-angle {
            position: absolute;
            right: 5%;
            bottom: 40px;
            width: 160px;
            height: 160px;
            border-right: 2px solid rgba(0, 228, 255, .14);
            border-bottom: 2px solid rgba(0, 228, 255, .14);
            transform: skew(-8deg);
            pointer-events: none;
        }

        .hero-corner-tag {
            position: absolute;
            left: 0;
            top: 170px;
            color: rgba(255, 255, 255, .6);
            font-size: 12px;
            letter-spacing: .14em;
            text-transform: uppercase;
            transform: rotate(90deg) translateX(-100%);
            transform-origin: left top;
            white-space: nowrap;
            border-left: 1px solid rgba(255, 176, 46, .5);
            padding-left: 12px;
        }

        /* 统一卡片样式 */
        .glass-card {
            background: var(--card-glass);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, .06);
            overflow: hidden;
            transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
        }

        .glass-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 228, 255, .35);
            box-shadow: 0 24px 60px rgba(0, 5, 15, .6), inset 0 1px 0 rgba(255, 255, 255, .08);
        }

        .glass-card .card-header-custom {
            padding: 22px 24px 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-dim);
        }

        .glass-card .card-header-custom .dot {
            width: 8px;
            height: 8px;
            background: var(--neon-cyan);
            border-radius: 50%;
            box-shadow: 0 0 8px rgba(0, 228, 255, .6);
        }

        /* 左侧锚点导航 + 右侧内容区 */
        .c2-layout {
            display: grid;
            grid-template-columns: 300px 1fr;
            gap: 40px;
            align-items: flex-start;
        }

        .c2-anchors {
            position: sticky;
            top: 150px;
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 0;
            border-left: 1px solid rgba(130, 180, 230, .14);
            margin: 0;
        }

        .c2-anchors .anchor-item {
            list-style: none;
        }

        .c2-anchors a {
            display: block;
            padding: 9px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-mid);
            border-radius: 0 8px 8px 0;
            position: relative;
            transition: color .2s, background .2s;
            border-left: 1px solid transparent;
            margin-left: -1px;
        }

        .c2-anchors a::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 48px;
            right: 16px;
            height: 2px;
            background: var(--neon-cyan);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .2s;
        }

        .c2-anchors a:hover,
        .c2-anchors a.active {
            color: var(--neon-cyan);
            background: rgba(0, 228, 255, .04);
            border-left-color: var(--neon-cyan);
        }

        .c2-anchors a:hover::after,
        .c2-anchors a.active::after {
            transform: scaleX(1);
        }

        .c2-anchors a .anchor-index {
            display: inline-block;
            width: 22px;
            font-size: 12px;
            color: var(--cta-orange);
            font-weight: 700;
            opacity: .9;
        }

        .data-stack {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .data-card {
            background: var(--card-glass);
            backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, .06);
            transition: border-color .25s, box-shadow .25s;
            position: relative;
            overflow: hidden;
        }

        .data-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-cyan), transparent);
            opacity: .35;
            transition: opacity .25s;
        }

        .data-card:hover {
            border-color: rgba(0, 228, 255, .3);
            box-shadow: 0 24px 50px rgba(0, 5, 15, .5), 0 0 30px rgba(0, 228, 255, .04), inset 0 1px 0 rgba(255, 255, 255, .06);
        }

        .data-card:hover::before {
            opacity: .8;
        }

        .data-card h3 {
            font-size: 23px;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .data-card .card-desc {
            color: var(--text-mid);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .data-card .data-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 18px;
            font-size: 13px;
            color: var(--text-dim);
        }

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

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 3px 12px;
            font-size: 12px;
            border-radius: var(--radius-tag);
            background: rgba(0, 228, 255, .08);
            color: var(--neon-cyan);
            border: 1px solid rgba(0, 228, 255, .2);
        }

        .tag-orange {
            background: rgba(255, 176, 46, .06);
            color: var(--cta-orange);
            border: 1px solid rgba(255, 176, 46, .3);
            font-weight: 700;
        }

        .form-panel {
            background: linear-gradient(160deg, rgba(45, 90, 140, .24), rgba(12, 25, 45, .72));
            backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 16px;
            padding: 32px;
            box-shadow: 0 20px 50px rgba(0, 5, 15, .55);
        }

        .form-panel h4 {
            font-size: 20px;
            color: var(--text-light);
            font-weight: 700;
            margin-bottom: 10px;
        }

        .form-panel p {
            font-size: 14px;
            color: var(--text-dim);
            margin-bottom: 24px;
        }

        .form-control {
            background: rgba(6, 16, 30, .6);
            border: 1px solid rgba(130, 180, 230, .15);
            color: var(--text-light);
            border-radius: 10px;
            padding: 11px 14px;
        }

        .form-control:focus {
            background: rgba(6, 16, 30, .75);
            border-color: var(--neon-cyan);
            box-shadow: 0 0 12px rgba(0, 228, 255, .12);
            color: var(--text-light);
        }

        .form-control::placeholder {
            color: rgba(128, 152, 173, .7);
        }

        .form-check-input:checked {
            background-color: var(--brand-blue);
            border-color: var(--neon-cyan);
        }

        .form-check-input {
            background: #081626;
            border-color: rgba(130, 180, 230, .3);
        }

        .form-check-input:focus {
            border-color: var(--neon-cyan);
            box-shadow: 0 0 10px rgba(0, 228, 255, .2);
        }

        /* FAQ */
        .faq-card {
            background: var(--card-glass);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 14px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color .2s ease, box-shadow .2s ease;
            padding: 6px 20px;
        }

        .faq-card .accordion-button {
            background: transparent !important;
            border: none !important;
            color: var(--text-light) !important;
            font-size: 15px;
            font-weight: 700 !important;
            padding: 18px 10px;
            position: relative;
            box-shadow: none !important;
            display: flex;
            align-items: center;
            text-align: left;
            gap: 8px;
        }

        .faq-card .accordion-button::after {
            content: '+';
            background-image: none;
            font-family: var(--font-sans);
            font-size: 24px;
            font-weight: 400;
            color: var(--neon-cyan);
            text-align: center;
            width: 20px;
            height: 20px;
            position: absolute;
            right: 10px;
            top: 14px;
            transition: transform .25s ease;
            transform: rotate(0);
        }

        .faq-card .accordion-button[aria-expanded="true"]::after {
            content: '×';
            transform: rotate(45deg);
        }

        .faq-card .accordion-button span.q-text {
            flex: 1;
            padding-right: 40px;
        }

        .faq-card .accordion-collapse {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.8;
            padding-bottom: 6px;
        }

        .faq-card:hover {
            border-color: rgba(0, 228, 255, .25);
        }

        /* CTA区块 */
        .cta-section {
            position: relative;
            overflow: hidden;
            background: var(--color-bg-1);
            border-top: 1px solid rgba(0, 228, 255, .08);
            border-bottom: 1px solid rgba(0, 228, 255, .08);
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: repeating-linear-gradient(135deg,
                    rgba(0, 228, 255, .03) 0px,
                    rgba(0, 228, 255, .03) 1px,
                    transparent 1px,
                    transparent 18px);
            pointer-events: none;
        }

        .cta-inner {
            display: grid;
            grid-template-columns: 1fr auto;
            align-items: center;
            gap: 28px;
            position: relative;
            z-index: 2;
        }

        .cta-inner h3 {
            color: var(--text-light);
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 800;
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .cta-inner p {
            color: var(--text-dim);
            font-size: 15px;
            margin: 0;
            max-width: 560px;
        }

        /* 页脚 */
        .site-footer {
            background: #040a14;
            border-top: 2px solid transparent;
            border-image: linear-gradient(90deg, transparent, rgba(0, 228, 255, .5), rgba(255, 176, 46, .5), transparent);
            border-image-slice: 1;
            padding: 60px 0 0;
            margin-top: 0;
        }

        .site-footer .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
        }

        .site-footer .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--brand-blue), var(--neon-cyan));
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            color: #fff;
            box-shadow: 0 0 16px rgba(0, 228, 255, .25);
        }

        .site-footer .brand-name {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-light);
        }

        .site-footer p {
            color: var(--text-dim);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 22px;
        }

        .site-footer h5 {
            font-size: 15px;
            color: var(--text-light);
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            display: inline-block;
            letter-spacing: .02em;
        }

        .site-footer h5::after {
            content: "";
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--neon-cyan);
        }

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

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

        .site-footer ul.footer-link a {
            color: var(--text-dim);
            font-size: 14px;
            line-height: 1.6;
        }

        .site-footer ul.footer-link a:hover {
            color: var(--neon-cyan);
            padding-left: 4px;
            transition: .2s;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(130, 180, 230, .12);
            margin-top: 34px;
            padding: 20px 0;
            color: var(--text-dim);
            font-size: 13px;
        }

        .site-footer .footer-bottom span:first-child {
            color: rgba(128, 152, 173, .7);
        }

        /* 移动端折叠菜单 */
        @media (max-width: 991.98px) {
            #mainNav .navbar-collapse {
                background: rgba(10, 22, 38, .98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border: 1px solid rgba(0, 228, 255, .16);
                border-radius: 14px;
                margin-top: 12px;
                padding: 16px 20px;
                box-shadow: 0 30px 60px rgba(0, 0, 0, .5);
            }

            #mainNav .nav-link {
                padding: 12px 8px;
                border-bottom: 1px solid rgba(130, 180, 230, .08);
            }

            #mainNav .nav-link::after {
                bottom: 2px;
            }

            #mainNav .navbar-nav {
                gap: 0;
            }

            #mainNav .navbar-collapse .btn-brand {
                margin-top: 16px;
                display: inline-flex;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 60px;
            }

            .c2-layout {
                grid-template-columns: 1fr;
            }

            .c2-anchors {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 8px;
                border: none;
                margin-bottom: 6px;
            }

            .c2-anchors a {
                padding: 8px 14px;
                font-size: 13px;
                border-left: 1px solid rgba(0, 228, 255, .16);
                border-radius: 8px;
            }

            .c2-anchors a::after {
                display: none;
            }

            .c2-anchors a:hover,
            .c2-anchors a.active {
                background: rgba(0, 228, 255, .06);
                border-color: rgba(0, 228, 255, .3);
            }

            .data-card {
                padding: 24px;
            }

            .data-card h3 {
                font-size: 20px;
            }

            .cta-inner {
                grid-template-columns: 1fr;
                text-align: left;
            }

            .cta-inner .btn-brand {
                width: 100%;
                justify-content: center;
            }

            .category-hero {
                padding-top: 130px;
            }

            .category-hero .hero-content {
                padding-left: 0;
            }
        }

        @media (max-width: 575px) {

            .btn-brand,
            .btn-cyan-outline {
                width: 100%;
                justify-content: center;
            }

            .hero-stats {
                gap: 12px;
            }

            .form-panel {
                padding: 20px;
            }

            .faq-card .accordion-button {
                font-size: 14px;
                padding: 16px 6px;
            }

            .faq-card .accordion-collapse {
                font-size: 13px;
            }

            .data-card {
                padding: 18px;
            }

            .data-card h3 {
                font-size: 18px;
            }
        }

        @media (min-width: 1200px) {
            .category-hero {
                min-height: 520px;
                display: flex;
                align-items: center;
            }
        }

/* roulang page: category3 */
:root {
    --bg-0: #060e1a;
    --bg-1: #0a1626;
    --bg-2: #0e1f33;
    --brand: #2f7bff;
    --cyan: #18d7ff;
    --cyan-glow: rgba(24, 215, 255, .32);
    --orange: #ffb02e;
    --orange-soft: #ffc55e;
    --orange-glow: rgba(255, 176, 46, .32);
    --text: #f0f6fd;
    --muted: #a7bacc;
    --weak: #8098ad;
    --line: rgba(130, 180, 230, .16);
    --line-strong: rgba(0, 228, 255, .32);
    --panel: linear-gradient(160deg, rgba(47, 123, 255, .14), rgba(12, 25, 45, .76));
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 20px 50px rgba(0, 5, 15, .45);
    --font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "HarmonyOS Sans SC", system-ui, sans-serif;
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    padding-top: 76px;
    background:
        radial-gradient(1100px 520px at 92% -80px, rgba(31, 130, 190, .14), transparent 60%),
        radial-gradient(900px 460px at -8% 30%, rgba(19, 100, 168, .08), transparent 56%),
        var(--bg-0);
    color: var(--text);
    font-family: var(--font);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
*, *::before, *::after {
    box-sizing: border-box;
}
:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 3px;
    border-radius: 5px;
}
a {
    color: inherit;
    text-decoration: none;
}
button {
    border: 0;
    background: none;
}
img {
    max-width: 100%;
    display: block;
}
h1, h2, h3, h4, h5, h6 {
    color: #fff;
    line-height: 1.25;
}
h2 {
    font-weight: 800;
}
.container {
    max-width: 1200px;
}
.section-space {
    padding: 92px 0;
}
.btn {
    border-radius: var(--radius-sm);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .55rem;
    transition: transform .22s, box-shadow .22s, background .22s, border-color .22s, color .22s;
}
.btn[disabled], .btn.disabled {
    opacity: .55;
    box-shadow: none;
    pointer-events: none;
    transform: none;
}
.btn-hero {
    background: var(--orange);
    color: #0b1521;
    box-shadow: 0 0 24px var(--orange-glow);
    min-height: 48px;
    padding: .75rem 1.7rem;
}
.btn-hero:hover {
    background: var(--orange-soft);
    color: #08111e;
    transform: translateY(-2px);
    box-shadow: 0 0 32px rgba(255, 176, 46, .46);
}
.btn-ghost {
    background: rgba(24, 215, 255, .06);
    border: 1px solid rgba(24, 215, 255, .58);
    color: #dffaff;
    min-height: 48px;
    padding: .75rem 1.65rem;
}
.btn-ghost:hover {
    border-color: var(--cyan);
    color: #fff;
    box-shadow: 0 0 22px var(--cyan-glow);
    transform: translateY(-2px);
}
.text-link {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    color: #cfecff;
    font-size: 14px;
    font-weight: 600;
    transition: color .2s;
}
.text-link i {
    transition: transform .2s;
}
.text-link:hover {
    color: var(--cyan);
}
.text-link:hover i {
    transform: translateX(4px);
}
.hero-actions .btn + .btn {
    margin-left: .7rem;
}
#mainNav {
    background: rgba(6, 14, 26, .92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding-top: .55rem;
    padding-bottom: .55rem;
    border-bottom: 1px solid rgba(130, 180, 230, .1);
    transition: background .2s, box-shadow .2s;
    position: fixed;
}
#mainNav::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00e8ff, #ffb02e, transparent);
    opacity: .8;
    pointer-events: none;
}
#mainNav .navbar-brand {
    display: inline-flex;
    align-items: center;
    gap: .7rem;
    margin-right: 0;
}
#mainNav .brand-icon {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #2f7bff, #18d7ff);
    color: #06121f;
    font-size: 16px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(24, 215, 255, .3);
}
#mainNav .brand-name {
    color: #fff;
    font-size: 19px;
    font-weight: 800;
    letter-spacing: .01em;
}
#mainNav .navbar-toggler {
    border: 1px solid rgba(24, 215, 255, .34);
    border-radius: 10px;
    color: var(--cyan);
    padding: .4rem .75rem;
    box-shadow: none;
}
#mainNav .navbar-toggler:hover {
    border-color: var(--cyan);
    background: rgba(24, 215, 255, .08);
}
#mainNav .navbar-nav {
    align-items: center;
    gap: .15rem;
}
#mainNav .nav-link {
    color: #c3d9ec;
    font-size: 15px;
    font-weight: 500;
    padding: .5rem .95rem;
    position: relative;
    border-radius: 8px;
    transition: color .2s, background .2s;
}
#mainNav .nav-link::after {
    content: "";
    position: absolute;
    left: .95rem;
    bottom: .1rem;
    width: 0;
    height: 2px;
    border-radius: 2px;
    background: var(--cyan);
    box-shadow: 0 0 10px var(--cyan-glow);
    transition: width .22s;
}
#mainNav .nav-link:hover {
    color: #fff;
}
#mainNav .nav-link:hover::after,
#mainNav .nav-link.active::after {
    width: calc(100% - 1.9rem);
}
#mainNav .nav-link.active {
    color: var(--cyan);
}
#mainNav .btn-brand {
    margin-left: .9rem;
    background: var(--orange);
    color: #0c1622;
    min-height: 40px;
    padding: .5rem 1.2rem;
    border-radius: 10px;
    box-shadow: 0 0 18px var(--orange-glow);
    font-size: 14px;
    align-items: center;
}
#mainNav .btn-brand:hover {
    background: var(--orange-soft);
    color: #070e18;
    transform: translateY(-2px);
    box-shadow: 0 0 28px rgba(255, 176, 46, .42);
}
.hub-hero {
    position: relative;
    overflow: hidden;
    padding: 66px 0 70px;
}
.hub-hero .container {
    position: relative;
    z-index: 3;
}
.hub-hero .hero-bg-decor {
    position: absolute;
    top: -10px;
    right: -4%;
    width: 42%;
    height: 115%;
    opacity: .38;
    background: linear-gradient(rgba(6, 14, 26, .82), rgba(6, 14, 26, .22)), url('/assets/images/backpic/back-3.png') center right / cover no-repeat;
    -webkit-mask-image: linear-gradient(to left, #000 8%, transparent 78%);
    mask-image: linear-gradient(to left, #000 8%, transparent 78%);
    pointer-events: none;
    z-index: 1;
}
.hub-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(circle at 78% 22%, rgba(46, 94, 154, .2), transparent 52%);
    z-index: 1;
}
.hub-crumb {
    font-size: 13px;
    color: var(--weak);
    display: flex;
    align-items: center;
    gap: .5rem;
    margin-bottom: 18px;
    z-index: 2;
    position: relative;
}
.hub-crumb a:hover {
    color: #fff;
}
.hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .05em;
    color: var(--cyan);
    border: 1px solid rgba(24, 215, 255, .28);
    background: rgba(24, 215, 255, .08);
    padding: .32rem .85rem;
    border-radius: 50px;
}
.hub-hero h1 {
    max-width: 920px;
    margin: 20px 0 16px;
    font-size: clamp(34px, 5vw, 54px);
    font-weight: 800;
    letter-spacing: -.02em;
    line-height: 1.16;
}
.hub-hero .hero-sub {
    max-width: 720px;
    color: var(--muted);
    font-size: 18px;
    line-height: 1.75;
    margin-bottom: 28px;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .7rem;
}
.hero-note {
    margin-top: 18px;
    color: var(--weak);
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: .4rem;
}
.hero-note i {
    color: var(--cyan);
}
.section-head {
    margin-bottom: 42px;
}
.section-tag {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    color: var(--cyan);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .12em;
    margin-bottom: 8px;
}
.section-tag::before {
    content: "";
    width: 8px;
    height: 8px;
    background: var(--orange);
    border-radius: 2px;
}
.section-head h2 {
    font-size: clamp(27px, 3.4vw, 37px);
    font-weight: 800;
    color: #fff;
    margin: .35rem 0 .6rem;
}
.section-head .lead {
    max-width: 780px;
    color: var(--muted);
    font-size: 16px;
    line-height: 1.8;
}
.hub-showcase {
    background: linear-gradient(180deg, rgba(7, 17, 31, .22), rgba(10, 25, 45, .6));
    border-block: 1px solid rgba(130, 180, 230, .08);
}
.content-feature {
    background: var(--panel);
    border: 1px solid rgba(130, 180, 230, .16);
    border-radius: 20px;
    overflow: hidden;
    height: 100%;
    box-shadow: var(--shadow);
    position: relative;
}
.content-feature::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(24, 215, 255, .5), transparent);
}
.feature-img-wrap {
    height: 250px;
    overflow: hidden;
    background: #0c1a2e;
}
.feature-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .6s ease, filter .6s ease;
}
.content-feature:hover .feature-img-wrap img {
    transform: scale(1.03);
}
.feature-text {
    padding: 26px 28px 30px;
}
.feature-flag {
    display: inline-block;
    font-size: 12px;
    padding: .25rem .7rem;
    border: 1px solid rgba(24, 215, 255, .38);
    color: var(--cyan);
    background: rgba(24, 215, 255, .06);
    border-radius: 100px;
    margin-bottom: 14px;
    letter-spacing: .06em;
}
.feature-text h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
}
.feature-text p {
    color: var(--muted);
    line-height: 1.8;
    font-size: 15px;
}
.feature-list {
    list-style: none;
    padding: 0 0 5px;
    margin: 16px 0 18px;
}
.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: .55rem;
    color: rgba(240, 246, 253, .9);
    font-size: 14px;
    padding: 4px 0;
}
.feature-list i {
    color: var(--cyan);
    margin-top: 5px;
    font-size: 13px;
}
.stack-card {
    background: linear-gradient(160deg, rgba(47, 123, 255, .13), rgba(13, 28, 50, .8));
    border: 1px solid rgba(130, 180, 230, .15);
    border-radius: 18px;
    padding: 24px;
    height: 100%;
    position: relative;
    overflow: hidden;
    box-shadow: 0 14px 40px rgba(0, 7, 18, .3);
}
.stack-card .mini-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, #2f7bff, #18d7ff);
    color: #06121f;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    box-shadow: 0 0 18px rgba(24, 215, 255, .28);
}
.stack-card h3 {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 8px;
}
.stack-card p {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.8;
}
.stack-card .text-link {
    margin-top: 12px;
}
.process-zone {
    background: var(--bg-1);
    border-block: 1px solid rgba(130, 180, 230, .08);
}
.step-wrap {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}
.process-step {
    position: relative;
    padding: 28px 22px;
    background: linear-gradient(165deg, rgba(47, 123, 255, .12), rgba(10, 24, 43, .82));
    border: 1px solid rgba(130, 180, 230, .13);
    border-radius: 18px;
    overflow: hidden;
}
.process-step::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 54px;
    background: linear-gradient(180deg, var(--orange), transparent);
    border-radius: 0 4px 4px 0;
}
.step-num {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -.04em;
    color: rgba(24, 215, 255, .2);
    font-variant-numeric: tabular-nums;
    line-height: 1;
    display: block;
    margin-bottom: 16px;
}
.process-step h4 {
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}
.process-step p {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 0;
}
.hub-resource-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1.2rem;
    margin-bottom: 36px;
}
.resource-list {
    border-top: 1px solid rgba(130, 180, 230, .2);
}
.resource-item {
    border-bottom: 1px solid rgba(130, 180, 230, .13);
}
.resource-link {
    display: grid;
    grid-template-columns: 130px minmax(0, 1fr) auto 44px;
    align-items: center;
    gap: 1.2rem;
    padding: 22px 10px;
    border-radius: 12px;
    transition: background .2s, padding .2s;
}
.resource-link:hover {
    background: rgba(24, 215, 255, .05);
    padding-left: 16px;
}
.res-type {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 108px;
    min-height: 36px;
    border: 1px solid rgba(24, 215, 255, .3);
    color: #bff2ff;
    background: rgba(24, 215, 255, .08);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
}
.res-info {
    display: block;
    min-width: 0;
}
.res-title {
    display: block;
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
    transition: color .2s;
}
.res-desc {
    display: block;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
    font-style: normal;
}
.resource-link:hover .res-title {
    color: var(--cyan);
}
.res-tags {
    display: flex;
    justify-content: flex-end;
    gap: .4rem;
    flex-wrap: wrap;
}
.res-tag {
    display: inline-block;
    padding: .25rem .6rem;
    font-size: 12px;
    color: #d9e6f2;
    background: rgba(47, 123, 255, .12);
    border: 1px solid rgba(130, 180, 230, .16);
    border-radius: 6px;
}
.res-arrow {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(24, 215, 255, .1);
    color: var(--cyan);
    border: 1px solid rgba(24, 215, 255, .22);
    transition: background .2s, color .2s, box-shadow .2s;
}
.resource-link:hover .res-arrow {
    background: var(--cyan);
    color: #06121f;
    box-shadow: 0 0 18px var(--cyan-glow);
}
.faq-zone {
    background: linear-gradient(180deg, rgba(7, 17, 31, .2), rgba(4, 12, 22, .35));
}
.faq-zone .section-head {
    text-align: center;
}
.faq-zone .section-head .lead {
    margin-left: auto;
    margin-right: auto;
}
.faq-single {
    max-width: 960px;
    margin: 0 auto;
}
.faq-item {
    background: linear-gradient(160deg, rgba(47, 123, 255, .12), rgba(12, 25, 45, .76));
    border: 1px solid rgba(130, 180, 230, .14);
    border-radius: 16px;
    margin-bottom: 12px;
    transition: border-color .25s, box-shadow .25s;
}
.faq-item:has(.collapse.show) {
    border-color: rgba(24, 215, 255, .45);
    box-shadow: 0 0 24px rgba(24, 215, 255, .08);
}
.faq-btn {
    width: 100%;
    display: flex;
    align-items: center;
    gap: .9rem;
    padding: 20px 22px;
    text-align: left;
    color: #fff;
    border-radius: 16px;
}
.faq-index {
    color: var(--cyan);
    font-family: var(--font);
    font-variant-numeric: tabular-nums;
    font-size: 13px;
    font-weight: 800;
}
.faq-text {
    flex: 1;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    transition: color .2s;
}
.faq-btn[aria-expanded="true"] .faq-text {
    color: #bff2ff;
}
.faq-btn .fa-plus {
    color: var(--cyan);
    font-size: 16px;
    transition: transform .25s, color .25s;
}
.faq-btn[aria-expanded="true"] .fa-plus {
    transform: rotate(45deg);
    color: var(--orange);
}
.faq-answer {
    padding: 0 22px 22px;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.85;
}
.faq-answer .answer-inner {
    padding-left: 48px;
}
.cta-zone {
    padding: 72px 0 92px;
    position: relative;
}
.cta-zone::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(24, 215, 255, .5), rgba(255, 176, 46, .5), transparent);
    opacity: .7;
}
.cta-box {
    position: relative;
    max-width: 1100px;
    margin: 0 auto;
    text-align: center;
    background:
        linear-gradient(rgba(6, 14, 26, .84), rgba(6, 14, 26, .9)),
        url('/assets/images/backpic/back-1.png') center / cover no-repeat;
    border: 1px solid rgba(255, 176, 46, .28);
    border-radius: 26px;
    padding: 62px 36px;
    overflow: hidden;
    box-shadow: 0 24px 60px rgba(0, 5, 15, .5);
}
.cta-mark {
    display: inline-block;
    font-size: 12px;
    letter-spacing: .18em;
    color: var(--orange);
    border: 1px solid rgba(255, 176, 46, .4);
    padding: .28rem .75rem;
    border-radius: 100px;
    margin-bottom: 16px;
}
.cta-box h2 {
    font-size: clamp(25px, 3.6vw, 37px);
    font-weight: 800;
    max-width: 760px;
    margin: 0 auto 16px;
}
.cta-box p {
    color: var(--muted);
    max-width: 720px;
    margin: 0 auto 30px;
    font-size: 16px;
    line-height: 1.8;
}
.site-footer {
    background: #040b14;
    border-top: 1px solid rgba(130, 180, 230, .1);
    padding: 58px 0 24px;
    position: relative;
    font-size: 14px;
}
.site-footer::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(0, 228, 255, .5), rgba(255, 176, 46, .4), transparent);
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: .65rem;
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    margin-bottom: 14px;
}
.footer-logo .brand-icon {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #2f7bff, #18d7ff);
    color: #06121f;
    border-radius: 10px;
    font-size: 15px;
}
.site-footer p {
    color: var(--weak);
    margin: 0;
}
.site-footer h5 {
    color: #cedcea;
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 14px;
}
.footer-link {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-link li {
    margin-bottom: 8px;
}
.footer-link a {
    color: #8da8bd;
    transition: color .2s;
}
.footer-link a:hover {
    color: #fff;
}
.footer-bottom {
    margin-top: 44px;
    padding-top: 20px;
    border-top: 1px solid rgba(130, 180, 230, .1);
    color: #6f889b;
    font-size: 13px;
}
@media (max-width: 991.98px) {
    body {
        padding-top: 68px;
    }
    .section-space {
        padding: 72px 0;
    }
    #mainNav .container {
        position: relative;
    }
    #mainNav .navbar-collapse {
        background: rgba(8, 18, 32, .96);
        border: 1px solid rgba(24, 215, 255, .18);
        border-radius: 18px;
        margin-top: 14px;
        padding: 12px;
        box-shadow: 0 20px 50px rgba(0, 0, 0, .35);
    }
    #mainNav .navbar-nav {
        align-items: stretch;
    }
    #mainNav .nav-link {
        padding: .7rem 1rem;
        border-radius: 10px;
    }
    #mainNav .nav-link::after {
        display: none;
    }
    #mainNav .nav-link.active {
        background: rgba(24, 215, 255, .08);
    }
    #mainNav .btn-brand {
        margin-left: 0;
        margin-top: 10px;
    }
    .step-wrap {
        grid-template-columns: repeat(2, 1fr);
    }
    .resource-link {
        grid-template-columns: 110px minmax(0, 1fr) 40px;
    }
    .res-tags {
        display: none;
    }
    .hub-hero .hero-bg-decor {
        opacity: .2;
    }
}
@media (max-width: 767.98px) {
    .section-space {
        padding: 56px 0;
    }
    .hub-hero {
        padding: 45px 0 52px;
    }
    .hub-hero h1 {
        font-size: 34px;
    }
    .hub-hero .hero-sub {
        font-size: 16px;
    }
    .hero-actions .btn + .btn {
        margin-left: 0;
    }
    .hero-actions .btn {
        width: 100%;
    }
    .step-wrap {
        grid-template-columns: 1fr;
    }
    .resource-link {
        grid-template-columns: 1fr 36px;
        gap: .8rem;
    }
    .res-type {
        width: auto;
        justify-content: flex-start;
        border: 0;
        padding: 0;
        background: none;
        color: var(--cyan);
        border-radius: 0;
        font-size: 12px;
    }
    .res-info {
        grid-column: 1 / -1;
        grid-row: 2;
    }
    .res-title {
        font-size: 17px;
    }
    .resource-link:hover {
        padding-left: 10px;
    }
    .res-arrow {
        grid-column: 2;
        grid-row: 1;
    }
    .faq-answer .answer-inner {
        padding-left: 0;
    }
    .feature-text {
        padding: 24px 20px;
    }
    .cta-box {
        padding: 42px 20px;
        border-radius: 20px;
    }
}
@media (max-width: 575.98px) {
    #mainNav .brand-name {
        font-size: 17px;
    }
    .section-head h2 {
        font-size: 28px;
    }
    .hero-note {
        align-items: flex-start;
    }
    .stack-card {
        padding: 20px;
    }
    .feature-img-wrap {
        height: 190px;
    }
    .footer-bottom {
        text-align: center;
    }
}