/* roulang page: index */
:root{
  --bg:#070A12;--bg-1:#0B111D;--bg-2:#0A101C;--bg-3:#060910;
  --brand:#2F6BFF;--brand-d:#1B49C4;
  --accent:#5CF2B4;--cool:#35E0FF;
  --text-1:#F2F6FF;--text-2:#A8B6D0;--text-3:#6C7C9A;
  --glass-1:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.028));
  --glass-border:rgba(255,255,255,.09);
  --glass-blur:blur(14px) saturate(140%);
  --line:rgba(255,255,255,.08);
  --r-sm:10px;--r-md:14px;--r-lg:20px;--r-pill:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.85);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-md)}
a{text-decoration:none;color:inherit;transition:color .22s var(--ease)}
ul,ol{list-style:none;margin:0;padding:0}
p{margin:0 0 16px}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.25}
button,input,textarea{font-family:inherit}
:focus-visible{outline:2px solid rgba(92,242,180,.6);outline-offset:2px}
.container{max-width:1240px;padding-left:24px;padding-right:24px}
@media(min-width:1400px){.container{max-width:1280px}}
@media(max-width:767px){.container{padding-left:20px;padding-right:20px}}
@media(max-width:479px){.container{padding-left:16px;padding-right:16px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,10,18,.72);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(92,242,180,.35),transparent);
  opacity:.7;
}
.site-header .navbar{padding:0;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;padding:0}
.brand-mark{
  width:34px;height:34px;border-radius:var(--r-sm);flex:0 0 34px;
  display:grid;place-items:center;
  background:linear-gradient(160deg,rgba(47,107,255,.35),rgba(92,242,180,.16));
  border:1px solid rgba(92,242,180,.45);
  box-shadow:0 0 18px -6px rgba(92,242,180,.5);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{font-size:17px;font-weight:700;color:#fff;letter-spacing:.01em}
.brand-text span{color:var(--accent)}
.nav-main{gap:6px}
.nav-main .nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:8px 14px;border-radius:var(--r-pill);
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-main .nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:1px;
  background:linear-gradient(90deg,rgba(92,242,180,.7),rgba(92,242,180,0));
  width:12px;opacity:0;transition:width .22s var(--ease),opacity .22s var(--ease);
}
.nav-main .nav-link:hover,.nav-main .nav-link:focus{color:#fff}
.nav-main .nav-link:hover::after{width:calc(100% - 28px);opacity:1}
.nav-main .nav-link.active{color:#fff}
.nav-main .nav-link.active::before{
  content:"";position:absolute;left:4px;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 8px rgba(92,242,180,.9);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.navbar-toggler{
  border:1px solid rgba(255,255,255,.18);border-radius:var(--r-sm);
  padding:6px 10px;background:rgba(255,255,255,.04);color:#fff;
}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(92,242,180,.18)}
.navbar-toggler-icon{
  background-image:none;width:20px;height:14px;position:relative;display:block;
}
.navbar-toggler-icon::before,.navbar-toggler-icon::after{
  content:"";position:absolute;left:0;right:0;height:2px;border-radius:2px;background:var(--text-1);
}
.navbar-toggler-icon::before{top:0}
.navbar-toggler-icon::after{bottom:0}
@media(max-width:991px){
  .site-header .navbar{min-height:60px}
  .navbar-collapse{
    margin-top:10px;padding:14px;border-radius:var(--r-lg);
    background:rgba(11,17,29,.96);border:1px solid var(--glass-border);
    backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  }
  .nav-main{gap:2px}
  .nav-main .nav-link{padding:11px 12px;font-size:15px;line-height:1.5}
  .nav-main .nav-link.active::before{left:2px}
  .nav-actions{flex-direction:column;align-items:stretch;margin-top:12px;gap:10px}
  .nav-actions .btn{width:100%;justify-content:center}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn:active{transform:translateY(0) scale(.99)}
.btn-sm{height:40px;padding:0 22px;font-size:14px}
.btn-xs{height:34px;padding:0 16px;font-size:13px}
.btn-glow{
  background:linear-gradient(180deg,#7CF7C6,#5CF2B4);color:#04120C;
  box-shadow:0 0 0 1px rgba(92,242,180,.55),0 10px 28px -10px rgba(92,242,180,.5);
}
.btn-glow:hover{
  color:#04120C;transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(92,242,180,.75),0 14px 36px -8px rgba(92,242,180,.65);
}
.btn-ghost{
  background:var(--glass-1);color:var(--text-1);
  border-color:rgba(255,255,255,.18);
  backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.08);color:#fff;border-color:rgba(92,242,180,.5);
  transform:translateY(-1px);
}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--accent);height:auto;padding:0;
  background:none;border:0;
}
.btn-text i{transition:transform .22s var(--ease)}
.btn-text:hover i{transform:translateX(4px)}
.btn-block{width:100%}

/* ---------- badges ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--accent);background:rgba(92,242,180,.12);
  border:1px solid rgba(92,242,180,.32);
}
.badge-cat{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.03em;
  color:#9DC2FF;background:rgba(47,107,255,.16);
  border:1px solid rgba(47,107,255,.38);
}
.badge-tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:13px;color:var(--text-2);
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.1);
}

/* ---------- section shell ---------- */
.sec{padding:96px 0;position:relative}
.sec-tight{padding:72px 0}
.sec-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-deep{background:var(--bg-2)}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.12em;
  color:var(--accent);text-transform:uppercase;margin-bottom:14px;
}
.sec-title{font-size:clamp(24px,3vw,36px);line-height:1.25}
.sec-sub{color:var(--text-2);font-size:16px;margin-top:14px;margin-bottom:0}
@media(max-width:992px){.sec{padding:72px 0}.sec-tight{padding:56px 0}.sec-head{margin-bottom:34px}}
@media(max-width:768px){.sec{padding:56px 0}.sec-tight{padding:44px 0}.sec-sub{font-size:15px}}

/* ---------- glass card ---------- */
.g-card{
  background:var(--glass-1);border:1px solid var(--glass-border);
  border-radius:var(--r-lg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.08);
  padding:26px;position:relative;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.g-card:hover{
  transform:translateY(-4px);border-color:rgba(92,242,180,.35);
  box-shadow:0 24px 48px -26px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.1);
}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;padding:72px 0 88px;
  background:
    radial-gradient(680px 380px at 12% -8%,rgba(47,107,255,.26),transparent 70%),
    radial-gradient(560px 320px at 92% 8%,rgba(92,242,180,.14),transparent 72%),
    var(--bg);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 40% 30%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 40% 30%,#000,transparent 78%);
}
.hero .container{position:relative;z-index:2}
.hero-status{
  display:inline-flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:8px 16px;border-radius:var(--r-pill);margin-bottom:26px;
  font-size:13px;color:var(--text-2);
  background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.1);
}
.hero-status .dot{
  width:8px;height:8px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(92,242,180,.16);animation:pulse 2.4s infinite;
}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(92,242,180,.16)}50%{box-shadow:0 0 0 8px rgba(92,242,180,.05)}}
.hero h1{
  font-size:clamp(30px,4.4vw,50px);line-height:1.15;letter-spacing:-.01em;
  margin:18px 0 20px;font-weight:700;
}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-lead{font-size:16.5px;color:var(--text-2);line-height:1.9;max-width:640px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-points{display:flex;flex-wrap:wrap;gap:14px 34px}
.hero-points li{font-size:13px;color:var(--text-3);line-height:1.5}
.hero-points strong{display:block;font-size:20px;font-weight:700;color:var(--text-1);letter-spacing:-.01em}
.icon-matrix{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;
  padding:22px;border-radius:var(--r-lg);
  background:var(--glass-1);border:1px solid var(--glass-border);
  backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.08);
}
.icon-cell{
  display:flex;flex-direction:column;gap:8px;padding:16px 14px;
  border-radius:var(--r-md);background:rgba(255,255,255,.035);
  border:1px solid rgba(255,255,255,.07);
  transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.icon-cell:hover{background:rgba(92,242,180,.07);border-color:rgba(92,242,180,.3);transform:translateY(-2px)}
.icon-cell i{font-size:17px;color:var(--accent)}
.icon-cell span{font-size:13.5px;color:var(--text-2);line-height:1.5}
@media(max-width:991px){
  .hero{padding:52px 0 64px}
  .icon-matrix{margin-top:8px}
  .hero-actions .btn{flex:1 1 200px}
}
@media(max-width:575px){
  .hero-lead{font-size:15.5px}
  .hero-points gap:12px 22px;
  .hero-actions .btn{width:100%}
  .icon-matrix{grid-template-columns:1fr}
}

/* ---------- capability cards ---------- */
.cap-card{padding:26px 24px}
.cap-icon{
  width:44px;height:44px;border-radius:var(--r-md);display:grid;place-items:center;
  background:linear-gradient(160deg,rgba(47,107,255,.28),rgba(92,242,180,.14));
  border:1px solid rgba(92,242,180,.28);margin-bottom:16px;
}
.cap-icon i{font-size:18px;color:var(--accent)}
.cap-card h3{font-size:19px;margin-bottom:10px}
.cap-card p{font-size:14.5px;color:var(--text-2);line-height:1.8;margin:0}

/* ---------- feature tabs ---------- */
.pill-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.pill-tabs button{
  height:40px;padding:0 22px;border-radius:var(--r-pill);font-size:14px;font-weight:600;
  color:var(--text-2);background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.12);cursor:pointer;
  transition:all .22s var(--ease);
}
.pill-tabs button:hover{color:#fff;border-color:rgba(92,242,180,.4)}
.pill-tabs button.active{
  color:#04120C;background:linear-gradient(180deg,#7CF7C6,#5CF2B4);border-color:transparent;
  box-shadow:0 0 0 1px rgba(92,242,180,.5),0 10px 24px -12px rgba(92,242,180,.6);
}
.tab-pane-custom{display:none;animation:fadeIn .18s var(--ease)}
.tab-pane-custom.show{display:block}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.feature-list li{
  display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);
}
.feature-list li:last-child{border-bottom:0}
.feature-num{
  flex:0 0 34px;height:34px;border-radius:var(--r-sm);
  display:grid;place-items:center;font-size:13px;font-weight:700;
  color:var(--accent);background:rgba(92,242,180,.1);border:1px solid rgba(92,242,180,.3);
}
.feature-list h4{font-size:16.5px;margin-bottom:6px}
.feature-list p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0}
.shot-frame{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--glass-border);
  background:var(--bg-1);box-shadow:var(--shadow-card);
}
.shot-frame img{width:100%;height:100%;object-fit:cover;border-radius:0}

/* ---------- scenes ---------- */
.scene-card{overflow:hidden;padding:0}
.scene-media{aspect-ratio:16/10;overflow:hidden;position:relative;background:linear-gradient(135deg,rgba(47,107,255,.28),rgba(92,242,180,.14))}
.scene-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s var(--ease)}
.scene-card:hover .scene-media img{transform:scale(1.04)}
.scene-media::after{content:"";position:absolute;inset:0;background:rgba(7,10,18,.2)}
.scene-body{padding:22px 24px 24px;position:relative}
.scene-body h3{font-size:19px;margin-bottom:10px}
.scene-body p{font-size:14.5px;color:var(--text-2);line-height:1.8;margin:0 0 14px}
.scene-tall .scene-media{aspect-ratio:16/11}

/* ---------- shot rail ---------- */
.shot-rail{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 22px;
  scroll-snap-type:x mandatory;
}
.shot-rail::-webkit-scrollbar{height:6px}
.shot-rail::-webkit-scrollbar-thumb{background:rgba(92,242,180,.3);border-radius:99px}
.shot-rail::-webkit-scrollbar-track{background:rgba(255,255,255,.05);border-radius:99px}
.shot-card{
  flex:0 0 300px;scroll-snap-align:start;border-radius:var(--r-lg);
  border:1px solid var(--glass-border);background:var(--bg-1);overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.shot-card:hover{transform:translateY(-6px);border-color:rgba(92,242,180,.4);box-shadow:0 26px 50px -26px rgba(0,0,0,.9),0 0 0 1px rgba(92,242,180,.2)}
.shot-card img{width:100%;aspect-ratio:9/16;object-fit:cover;border-radius:0}
.shot-cap{padding:14px 18px;font-size:13.5px;color:var(--text-2)}
.steps{display:flex;align-items:center;gap:0;flex-wrap:wrap;margin-top:26px}
.step{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-2)}
.step .s-num{
  width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
  font-size:12px;font-weight:700;color:var(--accent);
  background:rgba(92,242,180,.1);border:1px solid rgba(92,242,180,.35);
}
.step-line{flex:1 1 40px;height:1px;background:linear-gradient(90deg,rgba(92,242,180,.45),rgba(92,242,180,.05));margin:0 14px;min-width:24px}
@media(max-width:767px){
  .shot-card{flex:0 0 74vw}
  .steps{flex-direction:column;align-items:flex-start;gap:14px}
  .step-line{display:none}
}

/* ---------- compare table ---------- */
.compare-wrap{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--glass-border);
  background:var(--glass-1);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
}
.compare-table{width:100%;border-collapse:collapse;font-size:14.5px}
.compare-table th,.compare-table td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.compare-table thead th{
  background:rgba(10,16,28,.85);color:var(--text-1);font-size:13px;letter-spacing:.06em;
  font-weight:600;border-bottom:1px solid rgba(255,255,255,.12);
}
.compare-table thead th:nth-child(2){color:var(--accent)}
.compare-table tbody tr:last-child td{border-bottom:0}
.compare-table tbody tr:hover{background:rgba(255,255,255,.03)}
.compare-table td:first-child{color:var(--text-1);font-weight:600;width:26%}
.compare-table td{color:var(--text-2)}
.compare-table i.fa-check{color:var(--accent);margin-right:6px}
.compare-table i.fa-minus{color:var(--text-3);margin-right:6px}

/* ---------- deploy ---------- */
.deploy-cover{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--glass-border);position:relative;
  background-image:url(/assets/images/e0c9da5d60a45113.webp);
  background-size:cover;background-position:center;min-height:300px;
  box-shadow:var(--shadow-card);
}
.deploy-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,10,18,.35),rgba(7,10,18,.85))}
.deploy-cover-inner{position:relative;z-index:2;padding:28px;height:100%;display:flex;flex-direction:column;justify-content:flex-end}
.deploy-cover-inner p{font-size:14px;color:var(--text-2);margin:0}
.point-list li{display:flex;gap:12px;padding:12px 0;font-size:15px;color:var(--text-2);border-bottom:1px dashed rgba(255,255,255,.07)}
.point-list li:last-child{border-bottom:0}
.point-list strong{color:var(--text-1);font-weight:600;min-width:88px;flex:0 0 88px}
.code-card{
  background:rgba(6,9,16,.9);border:1px solid var(--glass-border);border-radius:var(--r-lg);
  padding:24px;font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  font-size:13px;line-height:2;color:var(--text-2);box-shadow:var(--shadow-card);
}
.code-card .k{color:#9DC2FF}
.code-card .v{color:var(--accent)}
.code-card .pill{margin-bottom:16px;font-family:inherit}

/* ---------- pricing ---------- */
.price-card{display:flex;flex-direction:column;height:100%}
.price-card.recommended{
  border-color:rgba(92,242,180,.5);transform:scale(1.02);
  box-shadow:0 0 0 1px rgba(92,242,180,.35),0 28px 56px -30px rgba(92,242,180,.5),inset 0 1px 0 rgba(255,255,255,.1);
}
.price-card.recommended:hover{transform:scale(1.02) translateY(-4px)}
.price-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.price-name{font-size:17px;font-weight:700}
.price-badge{
  font-size:11px;font-weight:700;letter-spacing:.08em;color:#04120C;
  background:linear-gradient(180deg,#7CF7C6,#5CF2B4);padding:3px 10px;border-radius:var(--r-pill);
}
.price-value{font-size:30px;font-weight:700;letter-spacing:-.02em;margin:10px 0 4px}
.price-value small{font-size:13px;font-weight:500;color:var(--text-3);margin-left:8px;letter-spacing:0}
.price-desc{font-size:13.5px;color:var(--text-3);margin-bottom:20px}
.check-list{margin-bottom:24px;flex:1}
.check-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);padding:7px 0;line-height:1.6}
.check-list i{color:var(--accent);font-size:12px;margin-top:8px}

/* ---------- cases ---------- */
.case-main{display:flex;flex-direction:column;height:100%}
.case-main .scene-media{aspect-ratio:16/9}
.case-metrics{display:flex;flex-wrap:wrap;gap:22px;margin:16px 0 18px}
.case-metrics li{font-size:12.5px;color:var(--text-3)}
.case-metrics strong{display:block;font-size:19px;color:var(--accent);font-weight:700}

/* ---------- guarantee strip ---------- */
.guarantee{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
}
.guarantee li{
  display:flex;gap:12px;align-items:flex-start;padding:18px 20px;
  border-radius:var(--r-md);background:rgba(255,255,255,.035);border:1px solid rgba(255,255,255,.075);
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.guarantee li:hover{border-color:rgba(92,242,180,.32);background:rgba(92,242,180,.06)}
.guarantee i{color:var(--accent);font-size:16px;margin-top:6px}
.guarantee strong{display:block;font-size:15px;color:var(--text-1);margin-bottom:4px}
.guarantee span{font-size:13px;color:var(--text-3);line-height:1.65}
@media(max-width:991px){.guarantee{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:575px){.guarantee{grid-template-columns:1fr}}

/* ---------- category entry ---------- */
.cat-entry{
  display:grid;grid-template-columns:1fr auto;gap:26px;align-items:center;
  border-radius:var(--r-lg);padding:32px;
  background:linear-gradient(120deg,rgba(47,107,255,.18),rgba(92,242,180,.08));
  border:1px solid rgba(92,242,180,.28);box-shadow:var(--shadow-card);
}
.cat-entry h2{font-size:24px;margin-bottom:10px}
.cat-entry p{font-size:14.5px;color:var(--text-2);margin:0;max-width:640px}
@media(max-width:767px){.cat-entry{grid-template-columns:1fr;padding:24px}}

/* ---------- accordion ---------- */
.faq-card{
  border-radius:var(--r-lg);border:1px solid var(--glass-border);
  background:var(--glass-1);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  padding:8px 28px;box-shadow:var(--shadow-card);
}
.faq-card .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.faq-card .accordion-item:last-child{border-bottom:0}
.faq-card .accordion-button{
  background:transparent;color:var(--text-1);font-size:16px;font-weight:600;
  padding:20px 44px 20px 0;box-shadow:none;position:relative;line-height:1.6;
}
.faq-card .accordion-button:not(.collapsed){color:var(--accent)}
.faq-card .accordion-button:focus{box-shadow:none;outline:none}
.faq-card .accordion-button::after{display:none}
.faq-card .accordion-button::before{
  content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:26px;height:26px;display:grid;place-items:center;font-size:16px;font-weight:400;
  color:var(--text-2);border:1px solid rgba(255,255,255,.16);border-radius:50%;
  transition:transform .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.faq-card .accordion-button:not(.collapsed)::before{
  content:"+";transform:translateY(-50%) rotate(45deg);color:var(--accent);border-color:rgba(92,242,180,.5);
}
.faq-card .accordion-button:not(.collapsed){box-shadow:inset 3px 0 0 var(--accent)}
.faq-card .accordion-body{padding:0 44px 22px 0;font-size:14.5px;color:var(--text-2);line-height:1.9}

/* ---------- posts ---------- */
.post-card{
  display:flex;flex-direction:column;height:100%;
  border-radius:var(--r-lg);border:1px solid var(--glass-border);
  background:var(--glass-1);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(92,242,180,.35);box-shadow:0 24px 48px -26px rgba(0,0,0,.9)}
.post-thumb{
  aspect-ratio:16/9;border-radius:0;
  background:linear-gradient(135deg,rgba(47,107,255,.3),rgba(92,242,180,.14));
  border-bottom:1px solid var(--glass-border);
}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.post-body h3{font-size:16.5px;line-height:1.55;margin:12px 0 10px;transition:color .22s var(--ease)}
.post-card:hover h3{color:#BFF7DC}
.post-body p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0 0 18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;font-size:12.5px;color:var(--text-3)}
.post-meta i{color:var(--accent);transition:transform .22s var(--ease)}
.post-card:hover .post-meta i{transform:translateX(4px)}
.empty-state{
  text-align:center;padding:48px 24px;border-radius:var(--r-lg);
  border:1px dashed rgba(255,255,255,.16);background:rgba(255,255,255,.025);
}
.empty-state p{color:var(--text-2);margin-bottom:18px}

/* ---------- download ---------- */
.download-sec{position:relative;overflow:hidden}
.download-sec::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(600px 300px at 80% 0%,rgba(92,242,180,.1),transparent 70%);
}
.dl-card{display:flex;flex-direction:column;height:100%;padding:28px 26px}
.dl-icon{
  width:52px;height:52px;border-radius:var(--r-md);display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(160deg,rgba(47,107,255,.3),rgba(92,242,180,.15));
  border:1px solid rgba(92,242,180,.3);
}
.dl-icon i{font-size:22px;color:var(--accent)}
.dl-card h3{font-size:18px;margin-bottom:8px}
.dl-card p{font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:22px;flex:1}
.dl-file{font-size:12.5px;color:var(--text-3);margin-bottom:14px;font-family:ui-monospace,Menlo,Consolas,monospace}

/* ---------- cta / form ---------- */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--r-lg);padding:44px;
  background:linear-gradient(120deg,rgba(47,107,255,.2),rgba(92,242,180,.08)),var(--glass-1);
  border:1px solid rgba(92,242,180,.28);
  box-shadow:0 30px 60px -34px rgba(0,0,0,.95),inset 0 1px 0 rgba(255,255,255,.1);
  backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
}
.cta-panel::before{
  content:"";position:absolute;width:420px;height:420px;right:-120px;top:-160px;
  background:radial-gradient(circle,rgba(92,242,180,.22),transparent 68%);pointer-events:none;
}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px;position:relative}
.cta-panel p{color:var(--text-2);font-size:15px;position:relative;margin-bottom:20px}
.cta-note{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:8px;margin-bottom:0}
.cta-note i{color:var(--accent)}
.form-label{font-size:13px;color:var(--text-2);margin-bottom:8px;font-weight:500}
.form-control{
  height:48px;border-radius:12px;background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.12);color:var(--text-1);font-size:14.5px;
  padding:0 16px;transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
textarea.form-control{height:auto;min-height:96px;padding:14px 16px;line-height:1.7;resize:vertical}
.form-control::placeholder{color:var(--text-3)}
.form-control:focus{
  background:rgba(255,255,255,.06);color:var(--text-1);
  border-color:rgba(92,242,180,.7);box-shadow:0 0 0 3px rgba(92,242,180,.15);
}
.form-tip{font-size:13px;color:var(--accent);margin-top:14px;display:none}
.form-tip.show{display:block}
@media(max-width:767px){.cta-panel{padding:26px}}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-3);position:relative;padding:64px 0 0;
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(92,242,180,.25),transparent);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-desc{font-size:14px;color:var(--text-3);line-height:1.85;max-width:300px;margin-bottom:18px}
.footer-social{display:flex;gap:10px}
.footer-social span{
  width:34px;height:34px;border-radius:var(--r-sm);display:grid;place-items:center;
  font-size:13px;color:var(--text-2);background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);transition:all .22s var(--ease);
}
.footer-social span:hover{color:var(--accent);border-color:rgba(92,242,180,.4)}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);transition:color .22s var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:44px;padding:20px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .domain{color:var(--text-3)}
@media(max-width:991px){
  .site-footer{padding:48px 0 0}
  .footer-desc{max-width:none}
  .footer-bottom{justify-content:center;text-align:center}
}
@media(max-width:575px){
  .footer-col{margin-bottom:8px}
  .footer-social{margin-bottom:6px}
}

/* roulang page: article */
:root{
  --bg:#070A12;--bg-1:#0B111D;--bg-2:#0A101C;--bg-3:#060910;
  --brand:#2F6BFF;--brand-d:#1B49C4;
  --accent:#5CF2B4;--cool:#35E0FF;
  --text-1:#F2F6FF;--text-2:#A8B6D0;--text-3:#6C7C9A;
  --glass-1:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.028));
  --glass-border:rgba(255,255,255,.09);
  --glass-blur:blur(14px) saturate(140%);
  --line:rgba(255,255,255,.08);
  --r-sm:10px;--r-md:14px;--r-lg:20px;--r-pill:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.85);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-body-bg:#070A12;--bs-body-color:#F2F6FF;--bs-primary:#2F6BFF;
  --bs-border-color:rgba(255,255,255,.08);--bs-link-color:#5CF2B4;--bs-link-hover-color:#7CF7C6;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-md)}
a{text-decoration:none;color:inherit;transition:color .22s var(--ease)}
button,input,textarea,select{font-family:inherit}
p{margin:0 0 18px}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
ul,ol{margin:0;padding:0}
.container,.container-sm,.container-md,.container-lg,.container-xl{
  width:100%;margin:0 auto;padding-left:24px;padding-right:24px;max-width:1240px;
}
@media(min-width:1400px){.container,.container-lg,.container-xl{max-width:1280px}}
.row{--bs-gutter-x:22px;--bs-gutter-y:22px}
::selection{background:rgba(92,242,180,.28);color:#fff}
a:focus-visible,button:focus-visible,.post-card:focus-visible{
  outline:2px solid rgba(92,242,180,.6);outline-offset:2px;border-radius:var(--r-sm);
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,10,18,.72);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(92,242,180,.35),transparent);
  opacity:.7;
}
.site-header .navbar{padding:0;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;padding:0;margin-right:8px}
.brand-mark{
  width:34px;height:34px;border-radius:var(--r-sm);flex:0 0 34px;
  display:grid;place-items:center;
  background:linear-gradient(160deg,rgba(47,107,255,.35),rgba(92,242,180,.16));
  border:1px solid rgba(92,242,180,.45);
  box-shadow:0 0 18px -6px rgba(92,242,180,.5);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{font-size:17px;font-weight:700;color:#fff;letter-spacing:.01em;white-space:nowrap}
.brand-text span{color:var(--accent)}
.nav-main{gap:6px}
.nav-main .nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:8px 14px;border-radius:var(--r-pill);
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-main .nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:1px;
  background:linear-gradient(90deg,rgba(92,242,180,.7),rgba(92,242,180,0));
  width:12px;opacity:0;transition:width .22s var(--ease),opacity .22s var(--ease);
}
.nav-main .nav-link:hover,.nav-main .nav-link:focus{color:#fff}
.nav-main .nav-link:hover::after{width:calc(100% - 28px);opacity:1}
.nav-main .nav-link.active{color:#fff}
.nav-main .nav-link.active::before{
  content:"";position:absolute;left:4px;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 8px rgba(92,242,180,.9);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.navbar-toggler{
  border:1px solid rgba(255,255,255,.18);border-radius:var(--r-sm);
  padding:6px 10px;background:rgba(255,255,255,.04);color:#fff;
}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(92,242,180,.18)}
.navbar-toggler-icon{background-image:none;width:20px;height:14px;position:relative;display:block}
.navbar-toggler-icon::before,.navbar-toggler-icon::after{
  content:"";position:absolute;left:0;right:0;height:2px;border-radius:2px;background:var(--text-1);
}
.navbar-toggler-icon::before{top:0}
.navbar-toggler-icon::after{bottom:0}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn:active{transform:translateY(0) scale(.99)}
.btn-sm{height:40px;padding:0 22px;font-size:14px}
.btn-xs{height:34px;padding:0 16px;font-size:13px}
.btn-glow{
  background:linear-gradient(180deg,#7CF7C6,#5CF2B4);color:#04120C;
  box-shadow:0 0 0 1px rgba(92,242,180,.55),0 10px 28px -10px rgba(92,242,180,.5);
}
.btn-glow:hover{
  color:#04120C;transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(92,242,180,.75),0 14px 36px -8px rgba(92,242,180,.65);
}
.btn-ghost{
  background:var(--glass-1);color:var(--text-1);
  border-color:rgba(255,255,255,.18);
  backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.08);color:#fff;border-color:rgba(92,242,180,.5);
  transform:translateY(-1px);
}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--accent);height:auto;padding:0;
  background:none;border:0;
}
.btn-text i{transition:transform .22s var(--ease)}
.btn-text:hover{color:#7CF7C6}
.btn-text:hover i{transform:translateX(4px)}
.btn-block{width:100%}

/* ---------- badges ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--accent);background:rgba(92,242,180,.12);
  border:1px solid rgba(92,242,180,.32);
}
.badge-cat{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.03em;
  color:#9DC2FF;background:rgba(47,107,255,.16);
  border:1px solid rgba(47,107,255,.38);
}
.badge-tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:13px;color:var(--text-2);
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.1);
}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:34px 0 52px;
  background:
    radial-gradient(760px 320px at 12% 0%,rgba(47,107,255,.20),transparent 62%),
    radial-gradient(620px 300px at 88% 12%,rgba(92,242,180,.14),transparent 66%),
    linear-gradient(180deg,rgba(7,10,18,.86),rgba(7,10,18,.94)),
    url('/assets/images/e0c9da5d60a45113.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 30%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000,transparent 78%);
}
.page-hero .container{position:relative;z-index:2}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{color:rgba(255,255,255,.22)}
.crumbs .cur{color:#fff}
.hero-tagline{margin-bottom:16px}
.article-title{
  font-size:clamp(25px,3.4vw,38px);line-height:1.28;font-weight:700;
  color:#fff;letter-spacing:-.01em;margin:0 0 18px;max-width:940px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  font-size:13.5px;color:var(--text-3);margin-bottom:18px;
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.22)}
.article-lead{
  max-width:860px;font-size:16.5px;line-height:1.9;color:var(--text-2);
  margin:0 0 22px;
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px}

/* ---------- section shell ---------- */
.sec{padding:88px 0;position:relative}
.sec-tight{padding:56px 0}
.sec-band{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:34px}
.sec-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--accent);text-transform:uppercase;
}
.sec-head .eyebrow::before{content:"";width:22px;height:1px;background:rgba(92,242,180,.6)}
.sec-head h2{font-size:clamp(23px,2.6vw,32px);line-height:1.3;color:#fff;margin-bottom:12px}
.sec-head p{color:var(--text-2);font-size:15.5px;margin:0}

/* ---------- layout ---------- */
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr);gap:36px}
@media(min-width:1200px){
  .article-wrap{grid-template-columns:minmax(0,1fr) 320px;gap:44px;align-items:start}
}
.article-main{
  background:var(--glass-1);
  border:1px solid var(--glass-border);
  border-radius:var(--r-lg);
  padding:34px 30px 30px;
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  min-width:0;
}
@media(max-width:575px){.article-main{padding:22px 18px 20px;border-radius:var(--r-md)}}

/* ---------- prose ---------- */
.article-body{font-size:16.5px;line-height:1.9;color:#DCE5F6;min-width:0;overflow-wrap:break-word;word-break:break-word}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 20px;color:#DCE5F6}
.article-body h2{
  position:relative;font-size:23px;line-height:1.45;color:#fff;
  margin:38px 0 16px;padding-left:15px;letter-spacing:0;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--accent),var(--brand));
}
.article-body h3{font-size:19px;line-height:1.5;color:#fff;margin:28px 0 12px}
.article-body h4{font-size:17px;color:#EAF1FF;margin:22px 0 10px}
.article-body a{color:var(--accent);border-bottom:1px solid rgba(92,242,180,.35);transition:color .2s var(--ease),border-color .2s var(--ease)}
.article-body a:hover{color:#8BF9CE;border-bottom-color:rgba(92,242,180,.75)}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:0}
.article-body ul{list-style:none}
.article-body ul>li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul>li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:rgba(92,242,180,.55);box-shadow:0 0 8px -2px rgba(92,242,180,.7);
}
.article-body ol{list-style:none;counter-reset:prose-ol}
.article-body ol>li{position:relative;padding-left:30px;margin-bottom:10px;counter-increment:prose-ol}
.article-body ol>li::before{
  content:counter(prose-ol);position:absolute;left:0;top:.28em;
  width:20px;height:20px;border-radius:var(--r-pill);display:grid;place-items:center;
  font-size:12px;font-weight:700;color:var(--accent);
  background:rgba(92,242,180,.12);border:1px solid rgba(92,242,180,.32);
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;border-left:3px solid var(--accent);
  background:var(--glass-1);border-radius:0 var(--r-md) var(--r-md) 0;
  color:#CFDBEF;font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);margin:24px auto;max-width:100%;height:auto}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;margin:24px 0;font-size:15px;
  background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;display:table;
}
.article-body thead th{
  background:rgba(255,255,255,.06);color:#fff;font-weight:600;text-align:left;
  padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.article-body tbody td{padding:12px 16px;border-bottom:1px solid var(--line);color:#DCE5F6}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body pre{
  background:#05080F;border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 20px;overflow-x:auto;font-size:14px;line-height:1.75;color:#C9D8F2;margin:22px 0;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body code{
  background:rgba(255,255,255,.07);border-radius:6px;padding:1px 6px;font-size:14px;
  color:#B9F7DC;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body hr{border:0;height:1px;background:var(--line);margin:32px 0}
.article-body iframe,.article-body video{max-width:100%;border-radius:var(--r-md)}
.article-empty{text-align:center;padding:40px 10px}
.article-empty h2{font-size:22px;color:#fff;margin-bottom:12px}
.article-empty p{color:var(--text-2);margin-bottom:22px}

/* ---------- sidebar ---------- */
.article-side{display:flex;flex-direction:column;gap:20px;min-width:0}
@media(min-width:1200px){.article-side{position:sticky;top:96px}}
.side-card{
  background:var(--glass-1);border:1px solid var(--glass-border);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.side-card:hover{transform:translateY(-3px);border-color:rgba(92,242,180,.32)}
.side-card h3{font-size:16px;color:#fff;margin-bottom:10px}
.side-card p{font-size:13.5px;color:var(--text-2);line-height:1.8;margin:0 0 16px}
.side-list{list-style:none;margin:0 0 16px;padding:0}
.side-list li{
  display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--text-2);
  padding:9px 0;border-bottom:1px solid var(--line);
}
.side-list li:last-child{border-bottom:0}
.side-list i{color:var(--accent);font-size:12px}

/* ---------- points ---------- */
.points-card{
  background:linear-gradient(180deg,rgba(47,107,255,.12),rgba(255,255,255,.028));
  border:1px solid rgba(47,107,255,.28);
  border-radius:var(--r-lg);padding:30px;
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.1);
}
.points-card h2{font-size:22px;color:#fff;margin-bottom:8px}
.points-card .sub{font-size:14px;color:var(--text-2);margin-bottom:22px}
.points-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
@media(max-width:767px){.points-grid{grid-template-columns:1fr}}
.point-item{
  display:flex;gap:14px;padding:16px 18px;border-radius:var(--r-md);
  background:rgba(255,255,255,.04);border:1px solid var(--glass-border);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.point-item:hover{border-color:rgba(92,242,180,.35);transform:translateY(-2px)}
.point-num{
  flex:0 0 26px;width:26px;height:26px;border-radius:var(--r-pill);
  display:grid;place-items:center;font-size:12px;font-weight:700;color:#04120C;
  background:linear-gradient(180deg,#7CF7C6,#5CF2B4);
}
.point-item h4{font-size:15px;color:#fff;margin:0 0 4px}
.point-item p{font-size:13.5px;color:var(--text-2);margin:0;line-height:1.75}

/* ---------- download ---------- */
.dl-card{
  background:
    radial-gradient(620px 260px at 12% 0%,rgba(92,242,180,.14),transparent 62%),
    var(--glass-1);
  border:1px solid var(--glass-border);border-radius:var(--r-lg);
  padding:34px;box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.09);
}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:24px}
@media(max-width:991px){.dl-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:767px){.dl-grid{grid-template-columns:1fr}}
.dl-item{
  display:flex;flex-direction:column;gap:12px;
  padding:22px;border-radius:var(--r-md);
  background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.dl-item:hover{transform:translateY(-4px);border-color:rgba(92,242,180,.4);box-shadow:0 16px 34px -20px rgba(92,242,180,.6)}
.dl-item .dl-ico{
  width:42px;height:42px;border-radius:var(--r-sm);display:grid;place-items:center;
  background:rgba(47,107,255,.16);border:1px solid rgba(47,107,255,.35);color:#9DC2FF;font-size:17px;
}
.dl-item h3{font-size:16px;color:#fff;margin:0}
.dl-item p{font-size:13px;color:var(--text-2);margin:0;line-height:1.7}
.dl-item .btn{margin-top:4px}

/* ---------- post cards ---------- */
.post-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--glass-1);border:1px solid var(--glass-border);border-radius:var(--r-lg);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  overflow:hidden;transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(92,242,180,.35);box-shadow:0 22px 46px -26px rgba(0,0,0,.95),inset 0 1px 0 rgba(255,255,255,.12)}
.post-thumb{
  aspect-ratio:16/9;border-radius:0;overflow:hidden;
  background:linear-gradient(150deg,rgba(47,107,255,.28),rgba(92,242,180,.12));
  position:relative;
}
.post-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{padding:20px 22px 18px;display:flex;flex-direction:column;flex:1}
.post-title{
  font-size:16.5px;line-height:1.55;color:#fff;margin:10px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .22s var(--ease);
}
.post-card:hover .post-title{color:#8BF9CE}
.post-desc{
  font-size:13.5px;color:var(--text-2);line-height:1.8;margin:0 0 16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3);
}
.post-foot i{color:var(--accent);transition:transform .22s var(--ease)}
.post-card:hover .post-foot i{transform:translateX(4px)}
.empty-note{
  padding:28px;border-radius:var(--r-md);border:1px dashed rgba(255,255,255,.16);
  color:var(--text-2);font-size:14px;text-align:center;background:rgba(255,255,255,.025);
}

/* ---------- prev / next ---------- */
.pager{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;
}
@media(max-width:767px){.pager{grid-template-columns:1fr}}
.pager-item{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:20px 22px;border-radius:var(--r-md);
  background:var(--glass-1);border:1px solid var(--glass-border);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.pager-item:hover{transform:translateY(-3px);border-color:rgba(92,242,180,.38)}
.pager-item .lbl{display:block;font-size:12px;color:var(--text-3);letter-spacing:.08em;margin-bottom:4px}
.pager-item .txt{font-size:15px;color:#fff;font-weight:600}
.pager-item i{color:var(--accent);font-size:15px;transition:transform .22s var(--ease)}
.pager-item:hover i{transform:translateX(4px)}

/* ---------- CTA strip ---------- */
.cta-strip{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  padding:30px 34px;border-radius:var(--r-lg);
  background:
    radial-gradient(520px 220px at 8% 0%,rgba(92,242,180,.16),transparent 60%),
    linear-gradient(180deg,rgba(47,107,255,.14),rgba(255,255,255,.028));
  border:1px solid rgba(92,242,180,.28);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.1);
}
.cta-strip h2{font-size:clamp(20px,2.2vw,26px);color:#fff;margin-bottom:6px}
.cta-strip p{font-size:14.5px;color:var(--text-2);margin:0}
.cta-strip .cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{
  background:#060910;padding:64px 0 26px;margin-top:0;
  border-top:1px solid transparent;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(92,242,180,.25),transparent);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-desc{font-size:14px;line-height:1.85;color:var(--text-2);margin:0 0 18px;max-width:400px}
.footer-social{display:flex;gap:10px}
.footer-social span{
  width:36px;height:36px;border-radius:var(--r-sm);display:grid;place-items:center;
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);
  color:var(--text-2);font-size:14px;
  transition:color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.footer-social span:hover{color:var(--accent);border-color:rgba(92,242,180,.42);transform:translateY(-2px)}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .domain{color:var(--text-3);letter-spacing:.04em}

/* ---------- responsive ---------- */
@media(max-width:991px){
  .site-header .navbar{min-height:60px}
  .navbar-collapse{
    margin-top:10px;padding:14px;border-radius:var(--r-lg);
    background:rgba(11,17,29,.96);border:1px solid var(--glass-border);
    backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  }
  .nav-main{gap:2px}
  .nav-main .nav-link{padding:11px 12px;font-size:15px;line-height:1.5}
  .nav-main .nav-link.active::before{left:2px}
  .nav-actions{flex-direction:column;align-items:stretch;margin-top:12px;gap:10px}
  .nav-actions .btn{width:100%;justify-content:center}
  .sec{padding:70px 0}
  .page-hero{padding:26px 0 42px}
}
@media(max-width:767px){
  .container,.container-sm,.container-md,.container-lg,.container-xl{padding-left:20px;padding-right:20px}
  .row{--bs-gutter-x:16px;--bs-gutter-y:16px}
  .sec{padding:56px 0}
  .article-title{font-size:clamp(22px,5.4vw,28px)}
  .article-lead{font-size:15.5px}
  .article-body{font-size:16px;line-height:1.88}
  .article-body h2{font-size:20px;margin-top:30px}
  .article-body h3{font-size:17.5px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .points-card{padding:22px}
  .dl-card{padding:24px}
  .cta-strip{padding:24px}
  .cta-strip .cta-actions{width:100%}
  .cta-strip .cta-actions .btn{width:100%}
  .footer-bottom{justify-content:center;text-align:center}
}
@media(max-width:520px){
  .container,.container-sm,.container-md,.container-lg,.container-xl{padding-left:16px;padding-right:16px}
  .hero-actions{width:100%}
  .hero-actions .btn{width:100%}
  .btn-sm{width:auto}
  .pager-item{padding:16px 18px}
  .dl-item{padding:18px}
}

/* roulang page: category1 */
:root{
  --bg:#070A12;--bg-1:#0B111D;--bg-2:#0A101C;--bg-3:#060910;
  --brand:#2F6BFF;--brand-d:#1B49C4;
  --accent:#5CF2B4;--cool:#35E0FF;
  --text-1:#F2F6FF;--text-2:#A8B6D0;--text-3:#6C7C9A;
  --glass-1:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.028));
  --glass-border:rgba(255,255,255,.09);
  --glass-blur:blur(14px) saturate(140%);
  --line:rgba(255,255,255,.08);
  --r-sm:10px;--r-md:14px;--r-lg:20px;--r-pill:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.85);
  --ease:cubic-bezier(.2,.7,.3,1);
}
:root{
  --bs-body-bg:#070A12;--bs-body-color:#F2F6FF;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --bs-border-color:rgba(255,255,255,.09);
  --bs-link-color:#5CF2B4;--bs-link-hover-color:#7CF7C6;
  --bs-primary:#2F6BFF;--bs-emphasis-color:#FFFFFF;
  --bs-secondary-color:#A8B6D0;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-md)}
a{text-decoration:none;color:inherit;transition:color .22s var(--ease)}
h1,h2,h3,h4{margin:0;color:var(--text-1);line-height:1.3;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(92,242,180,.28);color:#fff}
:focus-visible{outline:2px solid rgba(92,242,180,.6);outline-offset:2px}
.container{max-width:1280px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}
/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,10,18,.72);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(92,242,180,.35),transparent);
  opacity:.7;
}
.site-header .navbar{padding:0;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;padding:0}
.brand-mark{
  width:34px;height:34px;border-radius:var(--r-sm);flex:0 0 34px;
  display:grid;place-items:center;
  background:linear-gradient(160deg,rgba(47,107,255,.35),rgba(92,242,180,.16));
  border:1px solid rgba(92,242,180,.45);
  box-shadow:0 0 18px -6px rgba(92,242,180,.5);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{font-size:17px;font-weight:700;color:#fff;letter-spacing:.01em}
.brand-text span{color:var(--accent)}
.nav-main{gap:6px}
.nav-main .nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:8px 14px;border-radius:var(--r-pill);
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-main .nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:1px;
  background:linear-gradient(90deg,rgba(92,242,180,.7),rgba(92,242,180,0));
  width:12px;opacity:0;transition:width .22s var(--ease),opacity .22s var(--ease);
}
.nav-main .nav-link:hover,.nav-main .nav-link:focus{color:#fff}
.nav-main .nav-link:hover::after{width:calc(100% - 28px);opacity:1}
.nav-main .nav-link.active{color:#fff}
.nav-main .nav-link.active::before{
  content:"";position:absolute;left:4px;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 8px rgba(92,242,180,.9);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.navbar-toggler{
  border:1px solid rgba(255,255,255,.18);border-radius:var(--r-sm);
  padding:6px 10px;background:rgba(255,255,255,.04);color:#fff;
}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(92,242,180,.18)}
.navbar-toggler-icon{background-image:none;width:20px;height:14px;position:relative;display:block}
.navbar-toggler-icon::before,.navbar-toggler-icon::after{
  content:"";position:absolute;left:0;right:0;height:2px;border-radius:2px;background:var(--text-1);
}
.navbar-toggler-icon::before{top:0}
.navbar-toggler-icon::after{bottom:0}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn:active{transform:translateY(0) scale(.99)}
.btn-sm{height:40px;padding:0 22px;font-size:14px}
.btn-glow{
  background:linear-gradient(180deg,#7CF7C6,#5CF2B4);color:#04120C;
  box-shadow:0 0 0 1px rgba(92,242,180,.55),0 10px 28px -10px rgba(92,242,180,.5);
}
.btn-glow:hover{
  color:#04120C;transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(92,242,180,.75),0 14px 36px -8px rgba(92,242,180,.65);
}
.btn-ghost{
  background:var(--glass-1);color:var(--text-1);
  border-color:rgba(255,255,255,.18);
  backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.08);color:#fff;border-color:rgba(92,242,180,.5);
  transform:translateY(-1px);
}
.btn-dl{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;
  height:46px;border-radius:var(--r-pill);font-size:15px;font-weight:600;
  color:var(--accent);background:rgba(92,242,180,.1);border:1px solid rgba(92,242,180,.45);
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-dl:hover{
  background:rgba(92,242,180,.2);color:#BFF8DC;transform:translateY(-1px);
  box-shadow:0 12px 28px -14px rgba(92,242,180,.6);
}
/* ---------- badges ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--accent);background:rgba(92,242,180,.12);
  border:1px solid rgba(92,242,180,.32);
}
.badge-cat{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.03em;
  color:#9DC2FF;background:rgba(47,107,255,.16);
  border:1px solid rgba(47,107,255,.38);
}
/* ---------- sections ---------- */
.sec{padding:96px 0;position:relative}
.sec-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--accent);
  margin-bottom:14px;font-weight:600;
}
.sec-head h2{font-size:clamp(24px,3vw,34px);letter-spacing:-.01em}
.sec-head p{margin-top:14px;color:var(--text-2);font-size:16px}
.glass-card{
  position:relative;background:var(--glass-1);border:1px solid var(--glass-border);
  border-radius:var(--r-lg);padding:26px;
  backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.glass-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;border-radius:var(--r-lg) var(--r-lg) 0 0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}
.glass-card:hover{
  transform:translateY(-4px);
  border-color:rgba(92,242,180,.35);
  box-shadow:0 24px 48px -26px rgba(0,0,0,.9);
}
/* ---------- category hero ---------- */
.cat-hero{
  position:relative;padding:76px 0 64px;overflow:hidden;border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/e0c9da5d60a45113.webp") center/cover no-repeat;
  opacity:.22;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(620px 320px at 12% 8%,rgba(47,107,255,.3),transparent 70%),
    radial-gradient(520px 300px at 88% 82%,rgba(92,242,180,.16),transparent 70%),
    linear-gradient(180deg,rgba(7,10,18,.5),rgba(7,10,18,.96));
}
.cat-hero .container{position:relative;z-index:1}
.cat-hero h1{
  font-size:clamp(28px,4vw,42px);line-height:1.22;letter-spacing:-.01em;
  margin-top:18px;max-width:760px;
}
.cat-hero .hero-desc{margin-top:18px;color:var(--text-2);font-size:16.5px;max-width:660px}
.cat-stats{display:flex;flex-wrap:wrap;gap:36px;margin-top:32px}
.cat-stat strong{display:block;font-size:26px;color:var(--accent);line-height:1.2}
.cat-stat span{font-size:13px;color:var(--text-3)}
.tag-cloud{
  display:flex;flex-wrap:wrap;gap:10px;padding:26px;
  border-radius:var(--r-lg);background:var(--glass-1);
  border:1px solid var(--glass-border);
  backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  box-shadow:var(--shadow-card);
}
.tag-cloud .tag{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:var(--r-pill);
  font-size:13px;color:var(--text-2);background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);
  transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.tag-cloud .tag:hover{color:var(--accent);border-color:rgba(92,242,180,.45);background:rgba(92,242,180,.1)}
/* ---------- lead ---------- */
.lead-card{padding:34px}
.lead-card h2{font-size:clamp(20px,2.4vw,26px);line-height:1.4;margin-bottom:16px}
.lead-card .lead-text{color:var(--text-2);font-size:16px}
.point-list{margin-top:26px;display:grid;gap:18px}
.point{display:flex;gap:14px;align-items:flex-start}
.point-num{
  flex:0 0 30px;width:30px;height:30px;border-radius:50%;
  display:grid;place-items:center;font-size:13px;font-weight:700;
  color:var(--accent);border:1px solid rgba(92,242,180,.45);background:rgba(92,242,180,.08);
}
.point h3{font-size:16.5px;margin-bottom:4px}
.point p{color:var(--text-3);font-size:14.5px}
.check-card h3{font-size:17px;margin-bottom:16px}
.check-list{display:grid;gap:12px}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--text-2);
  padding-bottom:12px;border-bottom:1px dashed rgba(255,255,255,.08);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-list i{color:var(--accent);font-size:13px;margin-top:5px}
/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.flow-item{position:relative;padding-top:30px}
.flow-item::before{
  content:"";position:absolute;top:8px;left:0;width:calc(100% - 22px);height:1px;
  background:linear-gradient(90deg,rgba(92,242,180,.55),rgba(92,242,180,.06));
}
.flow-dot{
  position:absolute;top:0;left:0;width:17px;height:17px;border-radius:50%;
  background:rgba(92,242,180,.18);border:1px solid rgba(92,242,180,.7);
  box-shadow:0 0 12px rgba(92,242,180,.45);
}
.flow-item h3{font-size:17px;margin:4px 0 8px}
.flow-item p{font-size:14.5px;color:var(--text-3)}
.flow-visual{
  margin-top:38px;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--glass-border);box-shadow:var(--shadow-card);
}
.flow-visual img{width:100%;aspect-ratio:21/9;object-fit:cover;border-radius:0}
/* ---------- scene ---------- */
.scene-card{height:100%;display:flex;flex-direction:column;padding:0;overflow:hidden}
.scene-thumb{aspect-ratio:16/9;overflow:hidden;background:rgba(255,255,255,.04)}
.scene-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s var(--ease)}
.scene-card:hover .scene-thumb img{transform:scale(1.04)}
.scene-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.scene-body h3{font-size:18px}
.scene-body p{font-size:14.5px;color:var(--text-2)}
.scene-tag{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.05em;
  color:var(--accent);margin-bottom:2px;
}
/* ---------- faq ---------- */
.faq-wrap{
  background:var(--glass-1);border:1px solid var(--glass-border);border-radius:var(--r-lg);
  padding:6px;backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  box-shadow:var(--shadow-card);
}
.faq-wrap .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.faq-wrap .accordion-item:last-child{border-bottom:0}
.faq-wrap .accordion-button{
  background:transparent;color:var(--text-1);font-size:16.5px;font-weight:600;
  padding:20px 24px;box-shadow:none;border-radius:0;position:relative;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.faq-wrap .accordion-button:not(.collapsed){color:#fff;background:rgba(92,242,180,.05)}
.faq-wrap .accordion-button::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:2px;
  background:var(--accent);opacity:0;transition:opacity .2s var(--ease);
}
.faq-wrap .accordion-button:not(.collapsed)::before{opacity:1}
.faq-wrap .accordion-button::after{
  content:"+";background-image:none;width:auto;height:auto;
  font-size:20px;font-weight:400;line-height:1;color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  transition:transform .22s var(--ease),color .22s var(--ease);
}
.faq-wrap .accordion-button:not(.collapsed)::after{content:"−";color:#BFF8DC}
.faq-wrap .accordion-button:focus{box-shadow:none;border-color:transparent;outline:none}
.faq-wrap .accordion-body{color:var(--text-2);font-size:15.5px;padding:2px 24px 22px;line-height:1.85}
/* ---------- topics ---------- */
.topic-card{display:flex;gap:18px;align-items:flex-start;height:100%;padding:26px;flex-direction:column}
.topic-icon{
  flex:0 0 46px;width:46px;height:46px;border-radius:var(--r-md);
  display:grid;place-items:center;font-size:18px;
  color:#9DC2FF;background:rgba(47,107,255,.16);border:1px solid rgba(47,107,255,.35);
}
.topic-card h3{font-size:16.5px;margin-bottom:6px}
.topic-card p{font-size:14px;color:var(--text-3)}
.topic-link{
  margin-top:14px;display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;color:var(--accent);font-weight:600;
}
.topic-link i{transition:transform .22s var(--ease)}
.topic-card:hover .topic-link i{transform:translateX(4px)}
/* ---------- posts ---------- */
.post-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--glass-1);border:1px solid var(--glass-border);
  border-radius:var(--r-lg);overflow:hidden;
  backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(92,242,180,.35);box-shadow:0 24px 48px -26px rgba(0,0,0,.9)}
.post-thumb{
  aspect-ratio:16/9;position:relative;
  background:linear-gradient(135deg,rgba(47,107,255,.24),rgba(92,242,180,.1));
  border-bottom:1px solid var(--line);
}
.post-thumb::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 30% 30%,rgba(92,242,180,.2),transparent 62%);
}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-title{
  font-size:16.5px;line-height:1.55;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .22s var(--ease);
}
.post-card:hover .post-title{color:#BFF8DC}
.post-excerpt{
  font-size:14px;color:var(--text-3);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:10px;display:flex;align-items:center;
  justify-content:space-between;gap:10px;
}
.post-date{font-size:12.5px;color:var(--text-3)}
.empty-note{
  padding:40px 28px;text-align:center;color:var(--text-3);font-size:15px;
  border:1px dashed rgba(255,255,255,.12);border-radius:var(--r-lg);
  background:rgba(255,255,255,.02);
}
.list-more{display:flex;justify-content:center;margin-top:40px}
/* ---------- stats band ---------- */
.stats-band{
  background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:64px 0;
}
.stat-item strong{display:block;font-size:clamp(26px,3vw,34px);color:var(--text-1);line-height:1.2}
.stat-item strong em{font-style:normal;color:var(--accent)}
.stat-item span{font-size:13.5px;color:var(--text-3)}
/* ---------- download ---------- */
.dl-card{height:100%;display:flex;flex-direction:column;gap:14px;padding:28px}
.dl-icon{
  width:50px;height:50px;border-radius:var(--r-md);display:grid;place-items:center;
  font-size:20px;color:var(--accent);
  background:rgba(92,242,180,.1);border:1px solid rgba(92,242,180,.3);
}
.dl-card h3{font-size:18px}
.dl-card p{font-size:14px;color:var(--text-3)}
.dl-card .btn-dl{margin-top:auto}
/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  padding:38px 42px;border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(47,107,255,.2),rgba(92,242,180,.08)),var(--glass-1);
  border:1px solid var(--glass-border);
  backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  box-shadow:var(--shadow-card);
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(92,242,180,.22),transparent 65%);
}
.cta-band h2{font-size:clamp(20px,2.4vw,27px);position:relative;z-index:1}
.cta-band p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:580px;position:relative;z-index:1}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1}
/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-3);padding:64px 0 26px;position:relative;
  border-top:1px solid rgba(255,255,255,.06);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(92,242,180,.25),transparent);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-desc{color:var(--text-3);font-size:14px;max-width:360px;line-height:1.8}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social span{
  width:36px;height:36px;border-radius:var(--r-sm);display:grid;place-items:center;
  color:var(--text-2);background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.1);
  transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.footer-social span:hover{color:var(--accent);border-color:rgba(92,242,180,.45);background:rgba(92,242,180,.1)}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);flex-wrap:wrap;
}
.footer-bottom .domain{color:rgba(168,182,208,.7)}
/* ---------- responsive ---------- */
@media(max-width:1399.98px){
  .container{max-width:1280px}
}
@media(max-width:1199.98px){
  .cat-hero{padding:64px 0 56px}
  .sec{padding:80px 0}
}
@media(max-width:991.98px){
  .container{padding-left:20px;padding-right:20px}
  .site-header .navbar{min-height:60px}
  .navbar-collapse{
    margin-top:10px;padding:14px;border-radius:var(--r-lg);
    background:rgba(11,17,29,.96);border:1px solid var(--glass-border);
    backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
    max-height:calc(100vh - 100px);overflow-y:auto;
  }
  .nav-main{gap:2px}
  .nav-main .nav-link{padding:11px 12px;font-size:15px;line-height:1.5}
  .nav-main .nav-link.active::before{left:2px}
  .nav-actions{flex-direction:column;align-items:stretch;margin-top:12px;gap:10px}
  .nav-actions .btn{width:100%;justify-content:center}
  .sec{padding:72px 0}
  .flow{grid-template-columns:repeat(2,1fr);row-gap:30px}
  .cat-stats{gap:24px}
  .cta-band{padding:30px}
  .footer-bottom{justify-content:center;text-align:center}
}
@media(max-width:767.98px){
  .container{padding-left:20px;padding-right:20px}
  .cat-hero{padding:52px 0 46px}
  .cat-hero h1{font-size:clamp(26px,6.4vw,34px)}
  .cat-stats{gap:22px;margin-top:26px}
  .cat-stat strong{font-size:22px}
  .flow{grid-template-columns:1fr}
  .flow-item::before{display:none}
  .lead-card{padding:24px}
  .glass-card{padding:22px}
  .topic-card{flex-direction:row}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-desc{max-width:100%}
}
@media(max-width:575.98px){
  body{font-size:15.5px}
  .container{padding-left:16px;padding-right:16px}
  .sec{padding:56px 0}
  .sec-head{margin-bottom:32px}
  .btn{height:46px;padding:0 22px;font-size:14.5px}
  .btn-sm{height:40px;padding:0 18px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .cta-band{padding:24px}
  .tag-cloud{padding:20px}
  .post-body{padding:18px}
}
@media(max-width:399.98px){
  .cat-hero h1{font-size:24px}
  .sec-head h2{font-size:21px}
}