/* roulang page: index */
:root{
  --bg:#030712;
  --bg-soft:#081229;
  --panel:rgba(15,30,60,.55);
  --panel-solid:#0a1730;
  --line:rgba(56,189,248,.18);
  --line-strong:rgba(56,189,248,.45);
  --blue:#2563eb;
  --cyan:#38bdf8;
  --violet:#6366f1;
  --text:#f8fafc;
  --muted:#94a3b8;
  --dim:#64748b;
  --ok:#22c55e;
  --warn:#fbbf24;
  --radius:20px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow:0 20px 50px rgba(2,6,23,.65);
  --glow:0 0 26px rgba(56,189,248,.35);
  --glow-strong:0 0 38px rgba(37,99,235,.55);
  --container:1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter','Segoe UI',system-ui,-apple-system,'Noto Sans',sans-serif;
  color:var(--text);
  line-height:1.65;
  font-size:16px;
  background:
    radial-gradient(1100px 560px at 10% -8%, rgba(37,99,235,.30), transparent 62%),
    radial-gradient(900px 520px at 94% 2%, rgba(56,189,248,.16), transparent 64%),
    radial-gradient(900px 600px at 50% 120%, rgba(99,102,241,.16), transparent 60%),
    var(--bg);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--cyan);text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:#7dd3fc;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.015em;}
p{margin:0;}
button{font-family:inherit;}
::selection{background:rgba(56,189,248,.35);color:#fff;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}

.container{max-width:var(--container);padding-left:20px;padding-right:20px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  backdrop-filter:blur(16px);
  background:rgba(3,7,18,.82);
  border-bottom:1px solid rgba(56,189,248,.14);
  transition:box-shadow .3s ease,background .3s ease;
}
.site-header.is-stuck{box-shadow:0 10px 40px rgba(2,6,23,.75);background:rgba(3,7,18,.94);}
.header-inner{display:flex;align-items:center;gap:18px;min-height:74px;}
.brand{display:flex;align-items:center;gap:11px;color:var(--text);flex-shrink:0;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:42px;height:42px;border-radius:13px;
  display:grid;place-items:center;font-size:17px;color:#04101f;
  background:linear-gradient(140deg,#7dd3fc,#2563eb 60%,#4f46e5);
  box-shadow:0 0 22px rgba(56,189,248,.5);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:19px;font-weight:800;letter-spacing:-.02em;}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  color:var(--muted);font-size:14.5px;font-weight:500;
  padding:9px 14px;border-radius:var(--radius-pill);
  transition:color .25s ease,background .25s ease,box-shadow .25s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(56,189,248,.10);}
.nav-link.active{color:#e0f2fe;background:rgba(37,99,235,.22);box-shadow:inset 0 0 0 1px rgba(56,189,248,.35);}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.btn-login{
  padding:9px 16px;border-radius:var(--radius-pill);font-size:14px;font-weight:600;
  color:#bae6fd;border:1px solid rgba(56,189,248,.40);background:transparent;
}
.btn-login:hover{color:#fff;background:rgba(56,189,248,.14);border-color:var(--cyan);}
.btn-signup{
  padding:9px 20px;border-radius:var(--radius-pill);font-size:14px;font-weight:700;
  color:#03101f;background:linear-gradient(135deg,#7dd3fc,#38bdf8 42%,#2563eb);
  box-shadow:0 0 20px rgba(56,189,248,.45);
  transition:transform .22s ease,box-shadow .22s ease;
}
.btn-signup:hover{color:#03101f;transform:translateY(-2px);box-shadow:0 0 32px rgba(56,189,248,.7);}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(15,30,60,.6);color:var(--cyan);font-size:17px;
  display:none;place-items:center;margin-left:auto;
}
.mobile-nav{border-top:1px solid rgba(56,189,248,.14);padding:10px 0 16px;}
.mobile-nav .m-link{
  display:block;padding:12px 14px;border-radius:12px;color:var(--muted);
  font-weight:600;font-size:15px;
}
.mobile-nav .m-link:hover{background:rgba(56,189,248,.1);color:#fff;}
.mobile-nav .m-link.active{color:#e0f2fe;background:rgba(37,99,235,.2);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  border:0;cursor:pointer;font-weight:600;border-radius:var(--radius-pill);
  padding:14px 26px;font-size:15px;text-align:center;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease;
}
.btn-glow{
  color:#03101f;
  background:linear-gradient(135deg,#7dd3fc,#38bdf8 40%,#2563eb);
  box-shadow:0 0 24px rgba(56,189,248,.5);
}
.btn-glow:hover{color:#03101f;transform:translateY(-3px);box-shadow:0 0 40px rgba(56,189,248,.78);}
.btn-glow:active{transform:translateY(0);}
.btn-ghost{
  color:#cbd5e1;background:rgba(15,30,60,.55);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.32);
}
.btn-ghost:hover{color:#fff;background:rgba(37,99,235,.28);box-shadow:inset 0 0 0 1px var(--cyan);}
.btn-line{
  color:#bae6fd;background:transparent;box-shadow:inset 0 0 0 1px rgba(56,189,248,.4);
  padding:11px 20px;font-size:14px;
}
.btn-line:hover{color:#fff;background:rgba(56,189,248,.14);}
.btn-sm{padding:10px 18px;font-size:13.5px;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:76px 0 84px;}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  filter:saturate(1.05);opacity:.42;
}
.hero::after{
  content:'';position:absolute;inset:0;
  background:
    linear-gradient(100deg, rgba(3,7,18,.96) 8%, rgba(3,7,18,.80) 46%, rgba(3,7,18,.55) 100%),
    radial-gradient(700px 400px at 78% 30%, rgba(37,99,235,.35), transparent 70%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center;}
.badge-glow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;
  color:#bae6fd;background:rgba(37,99,235,.20);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.4),0 0 18px rgba(56,189,248,.22);
}
.hero h1{
  margin-top:20px;font-size:clamp(1.85rem,3.6vw,2.85rem);font-weight:800;
  line-height:1.22;
}
.hero h1 .hl{
  background:linear-gradient(120deg,#7dd3fc,#38bdf8 45%,#818cf8);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{margin-top:20px;color:#cbd5e1;font-size:16.5px;line-height:1.7;max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:26px;}
.hero-points li{display:flex;align-items:center;gap:9px;color:#cbd5e1;font-size:14px;}
.hero-points i{color:var(--cyan);font-size:13px;}

.hero-panel{
  padding:26px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(20,40,80,.78),rgba(8,18,41,.86));
  box-shadow:var(--shadow),inset 0 0 0 1px rgba(56,189,248,.22);
  backdrop-filter:blur(14px);
}
.hero-panel h2{font-size:17px;font-weight:700;margin-bottom:4px;}
.hero-panel .panel-sub{font-size:13.5px;color:var(--muted);margin-bottom:20px;}
.hot-tag{
  display:inline-flex;align-items:center;gap:6px;font-size:11.5px;font-weight:700;
  text-transform:uppercase;letter-spacing:.05em;color:#052e16;
  background:linear-gradient(120deg,#86efac,#22c55e);padding:4px 11px;border-radius:var(--radius-pill);
}
.dl-item{
  display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:var(--radius-sm);
  background:rgba(3,10,24,.6);box-shadow:inset 0 0 0 1px rgba(56,189,248,.2);
  transition:transform .25s ease,box-shadow .25s ease;
}
.dl-item + .dl-item{margin-top:12px;}
.dl-item:hover{transform:translateX(4px);box-shadow:inset 0 0 0 1px var(--cyan),0 0 22px rgba(56,189,248,.25);}
.dl-item i{font-size:24px;color:var(--cyan);width:30px;text-align:center;}
.dl-item .dl-txt strong{display:block;font-size:14.5px;color:#f1f5f9;}
.dl-item .dl-txt span{font-size:12.5px;color:var(--muted);}
.panel-foot{margin-top:18px;display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  font-size:11.5px;font-weight:600;padding:5px 11px;border-radius:var(--radius-pill);
  color:#bae6fd;background:rgba(37,99,235,.18);box-shadow:inset 0 0 0 1px rgba(56,189,248,.28);
}

/* ---------- Sections ---------- */
.section{padding:74px 0;position:relative;}
.section-alt{background:linear-gradient(180deg,rgba(8,18,41,.72),rgba(3,7,18,.1));border-top:1px solid rgba(56,189,248,.10);border-bottom:1px solid rgba(56,189,248,.10);}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-label{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:var(--cyan);margin-bottom:12px;
}
.sec-head h2{font-size:clamp(1.4rem,2.4vw,2rem);font-weight:800;}
.sec-head p{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.7;}

/* ---------- Stats ---------- */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.stat-box{
  padding:26px 22px;border-radius:var(--radius);
  background:linear-gradient(155deg,rgba(18,36,72,.7),rgba(6,14,32,.72));
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.16);
}
.stat-box strong{display:block;font-size:clamp(1.5rem,2.6vw,2.05rem);font-weight:800;color:#e0f2fe;letter-spacing:-.02em;}
.stat-box span{display:block;margin-top:6px;font-size:13.5px;color:var(--muted);line-height:1.55;}

/* ---------- Glass cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.glass{
  padding:28px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(17,33,66,.62),rgba(6,14,32,.72));
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.16);
  transition:transform .28s ease,box-shadow .28s ease;
}
.glass:hover{transform:translateY(-6px);box-shadow:inset 0 0 0 1px rgba(56,189,248,.42),0 22px 44px rgba(2,6,23,.6);}
.glass .ic{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  font-size:19px;color:#03101f;margin-bottom:18px;
  background:linear-gradient(140deg,#7dd3fc,#2563eb);
  box-shadow:0 0 20px rgba(56,189,248,.4);
}
.glass h3{font-size:17px;margin-bottom:10px;}
.glass p{color:var(--muted);font-size:14.5px;line-height:1.68;}

/* ---------- Download block ---------- */
.dl-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.dl-card{
  position:relative;overflow:hidden;border-radius:var(--radius);padding:32px;
  background:linear-gradient(150deg,rgba(20,40,80,.85),rgba(6,14,32,.9));
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.2);
}
.dl-card::before{
  content:'';position:absolute;top:-60px;right:-60px;width:200px;height:200px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,189,248,.35),transparent 68%);
}
.dl-card h3{font-size:20px;margin-bottom:8px;position:relative;}
.dl-card > p{color:var(--muted);font-size:14.5px;position:relative;margin-bottom:20px;}
.dl-card ul{margin-bottom:24px;position:relative;}
.dl-card ul li{display:flex;gap:10px;font-size:14px;color:#cbd5e1;padding:5px 0;}
.dl-card ul li i{color:var(--cyan);font-size:12px;margin-top:5px;}
.dl-card .btn{position:relative;}
.dl-meta{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px;position:relative;}

/* ---------- Scenarios ---------- */
.scene-list{display:grid;gap:16px;}
.scene{
  display:grid;grid-template-columns:56px 1fr;gap:18px;align-items:start;
  padding:22px 24px;border-radius:var(--radius);
  background:rgba(8,20,44,.55);box-shadow:inset 0 0 0 1px rgba(56,189,248,.14);
  border-left:3px solid transparent;
  transition:border-color .3s ease,background .3s ease;
}
.scene:hover{border-left-color:var(--cyan);background:rgba(13,30,62,.7);}
.scene .num{font-size:22px;font-weight:800;color:rgba(56,189,248,.55);font-family:'Inter',monospace;}
.scene h3{font-size:16.5px;margin-bottom:7px;}
.scene p{color:var(--muted);font-size:14.5px;line-height:1.68;}

/* ---------- Showcase ---------- */
.showcase{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.showcase-media{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow),inset 0 0 0 1px rgba(56,189,248,.24);}
.showcase-media img{width:100%;height:100%;object-fit:cover;}
.showcase-media .float-badge{
  position:absolute;left:18px;bottom:18px;padding:10px 16px;border-radius:var(--radius-sm);
  background:rgba(3,7,18,.82);backdrop-filter:blur(8px);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.35);
  font-size:13px;font-weight:600;color:#e0f2fe;
}
.mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px;}
.mini{
  padding:16px 18px;border-radius:var(--radius-sm);
  background:rgba(10,22,48,.6);box-shadow:inset 0 0 0 1px rgba(56,189,248,.14);
}
.mini strong{display:block;font-size:15px;color:#e2e8f0;margin-bottom:4px;}
.mini span{font-size:13px;color:var(--muted);}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step;}
.step{
  position:relative;padding:30px 26px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(16,32,66,.7),rgba(5,12,28,.78));
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.16);
}
.step::before{
  counter-increment:step;content:'Bước ' counter(step);
  display:inline-block;font-size:11.5px;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;color:#052e16;padding:4px 11px;border-radius:var(--radius-pill);
  background:linear-gradient(120deg,#7dd3fc,#38bdf8);margin-bottom:16px;
}
.step h3{font-size:16.5px;margin-bottom:10px;}
.step p{color:var(--muted);font-size:14.5px;line-height:1.68;}

/* ---------- Channel wall ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.channel-card{
  display:block;padding:30px 26px;border-radius:var(--radius);color:var(--text);
  background:linear-gradient(155deg,rgba(20,40,80,.72),rgba(6,14,32,.8));
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.2);
  transition:transform .28s ease,box-shadow .28s ease;
}
.channel-card:hover{color:var(--text);transform:translateY(-8px);box-shadow:inset 0 0 0 1px var(--cyan),0 0 34px rgba(56,189,248,.28);}
.channel-card i{font-size:26px;color:var(--cyan);margin-bottom:16px;display:block;}
.channel-card h3{font-size:17.5px;margin-bottom:9px;}
.channel-card p{color:var(--muted);font-size:14.5px;line-height:1.66;}
.channel-card .more{display:inline-flex;align-items:center;gap:7px;margin-top:16px;font-size:13.5px;font-weight:600;color:var(--cyan);}

/* ---------- Payments ---------- */
.pay-row{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.pay{
  text-align:center;padding:24px 16px;border-radius:var(--radius-sm);
  background:rgba(8,20,44,.6);box-shadow:inset 0 0 0 1px rgba(56,189,248,.16);
  transition:background .25s ease,transform .25s ease;
}
.pay:hover{background:rgba(16,34,68,.85);transform:translateY(-4px);}
.pay i{font-size:22px;color:var(--cyan);margin-bottom:12px;display:block;}
.pay strong{display:block;font-size:15px;}
.pay span{display:block;font-size:12.5px;color:var(--muted);margin-top:5px;}

/* ---------- Loyalty ladder ---------- */
.ladder{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch;}
.tier{
  padding:30px 26px;border-radius:var(--radius);display:flex;flex-direction:column;
  background:linear-gradient(160deg,rgba(14,28,58,.7),rgba(5,12,28,.8));
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.16);
}
.tier.featured{
  background:linear-gradient(160deg,rgba(37,99,235,.34),rgba(6,14,32,.86));
  box-shadow:inset 0 0 0 1px var(--cyan),0 0 34px rgba(37,99,235,.35);
}
.tier .tier-name{font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--cyan);}
.tier h3{font-size:20px;margin:12px 0 10px;}
.tier p{color:var(--muted);font-size:14.5px;line-height:1.68;flex:1;}
.tier ul{margin-top:18px;display:grid;gap:9px;}
.tier ul li{display:flex;gap:10px;font-size:14px;color:#cbd5e1;}
.tier ul li i{color:var(--ok);font-size:12px;margin-top:5px;}

/* ---------- Reviews ---------- */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.review{
  padding:28px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(17,33,66,.6),rgba(6,14,32,.72));
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.14);
}
.review .stars{color:var(--warn);font-size:13px;letter-spacing:2px;margin-bottom:14px;}
.review p{color:#cbd5e1;font-size:14.5px;line-height:1.7;font-style:italic;}
.review .who{display:flex;align-items:center;gap:12px;margin-top:18px;}
.review .who img{width:44px;height:44px;border-radius:50%;object-fit:cover;box-shadow:0 0 0 2px rgba(56,189,248,.35);}
.review .who strong{display:block;font-size:14.5px;}
.review .who span{font-size:12.5px;color:var(--muted);}

/* ---------- Security ---------- */
.sec-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.sec-item{
  display:flex;gap:16px;padding:24px;border-radius:var(--radius);
  background:rgba(8,20,44,.55);box-shadow:inset 0 0 0 1px rgba(56,189,248,.14);
}
.sec-item i{font-size:20px;color:var(--cyan);margin-top:3px;}
.sec-item h3{font-size:16px;margin-bottom:8px;}
.sec-item p{color:var(--muted);font-size:14.5px;line-height:1.68;}

/* ---------- News / CMS ---------- */
.news-list{display:grid;gap:14px;}
.news-item{
  display:block;padding:22px 24px;border-radius:var(--radius);color:var(--text);
  background:rgba(8,20,44,.6);box-shadow:inset 0 0 0 1px rgba(56,189,248,.14);
  transition:transform .25s ease,box-shadow .25s ease;
}
.news-item:hover{color:var(--text);transform:translateX(5px);box-shadow:inset 0 0 0 1px var(--cyan);}
.news-cat{
  display:inline-block;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--cyan);background:rgba(37,99,235,.18);padding:3px 10px;border-radius:var(--radius-pill);margin-bottom:10px;
}
.news-item h3{font-size:16.5px;line-height:1.45;margin-bottom:8px;}
.news-item p{color:var(--muted);font-size:14px;line-height:1.65;}
.news-item time{display:block;margin-top:10px;font-size:12.5px;color:var(--dim);}
.news-side{
  padding:24px;border-radius:var(--radius);height:100%;
  background:linear-gradient(160deg,rgba(16,32,66,.7),rgba(5,12,28,.8));
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.18);
}
.news-side h3{font-size:15.5px;margin-bottom:16px;color:#e0f2fe;}
.side-item{display:block;padding:13px 0;border-bottom:1px dashed rgba(56,189,248,.2);color:var(--text);}
.side-item:last-child{border-bottom:0;}
.side-item:hover{color:var(--cyan);}
.side-item h4{font-size:14.5px;line-height:1.5;font-weight:600;}
.side-item span{display:block;margin-top:5px;font-size:12px;color:var(--dim);}
.empty-note{padding:26px;border-radius:var(--radius-sm);background:rgba(8,20,44,.6);color:var(--muted);box-shadow:inset 0 0 0 1px rgba(56,189,248,.14);}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:14px;max-width:900px;}
.faq-item{
  border-radius:var(--radius);overflow:hidden;
  background:rgba(8,20,44,.6);box-shadow:inset 0 0 0 1px rgba(56,189,248,.15);
}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:18px;
  padding:20px 24px;background:transparent;border:0;color:var(--text);
  font-size:16px;font-weight:600;text-align:left;cursor:pointer;
}
.faq-q i{color:var(--cyan);transition:transform .3s ease;font-size:14px;flex-shrink:0;}
.faq-item.open .faq-q i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-a p{padding:0 24px 22px;color:var(--muted);font-size:14.5px;line-height:1.72;}

/* ---------- Final CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:26px;padding:56px 48px;text-align:center;
  background:linear-gradient(130deg,rgba(37,99,235,.42),rgba(6,14,32,.9));
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.32),0 30px 60px rgba(2,6,23,.6);
}
.cta-band::before{
  content:'';position:absolute;inset:-40% -10% auto -10%;height:260px;
  background:radial-gradient(closest-side,rgba(56,189,248,.32),transparent);
}
.cta-band h2{position:relative;font-size:clamp(1.4rem,2.4vw,2rem);}
.cta-band p{position:relative;color:#cbd5e1;margin:16px auto 28px;max-width:680px;font-size:15.5px;line-height:1.7;}
.cta-band .btn{position:relative;}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:20px;padding:60px 0 28px;border-top:1px solid rgba(56,189,248,.14);
  background:linear-gradient(180deg,rgba(6,14,32,.5),rgba(3,7,18,.95));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.7;margin-top:16px;max-width:320px;}
.footer-col h4{font-size:14px;text-transform:uppercase;letter-spacing:.09em;color:#e2e8f0;margin-bottom:16px;}
.footer-col a,.footer-col span{display:block;color:var(--muted);font-size:14px;padding:6px 0;}
.footer-col a:hover{color:var(--cyan);}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.footer-tags i{color:var(--cyan);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(56,189,248,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:var(--dim);font-size:13px;
}

/* ---------- FAB ---------- */
.fab-support{
  position:fixed;left:16px;bottom:96px;z-index:1050;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 20px;border-radius:var(--radius-pill);
  background:rgba(7,15,32,.82);backdrop-filter:blur(12px);
  color:#e0f2fe;font-size:14px;font-weight:600;
  box-shadow:0 0 22px rgba(56,189,248,.42),inset 0 0 0 1px rgba(56,189,248,.55);
  opacity:.82;transition:opacity .28s ease,transform .28s ease,box-shadow .28s ease;
}
.fab-support:hover{opacity:1;color:#fff;transform:translateY(-3px) scale(1.04);box-shadow:0 0 34px rgba(56,189,248,.7),inset 0 0 0 1px var(--cyan);}
.fab-support i{font-size:18px;color:var(--cyan);animation:pulseNeon 2.4s infinite;}
.fab-support .dot{
  position:absolute;top:6px;right:10px;width:9px;height:9px;border-radius:50%;
  background:#f43f5e;box-shadow:0 0 10px #f43f5e;
}
@keyframes pulseNeon{0%,100%{opacity:1;}50%{opacity:.5;}}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .container{max-width:960px;}
  .hero{padding:56px 0 64px;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .grid-3,.channel-grid,.reviews,.ladder,.steps{grid-template-columns:repeat(2,1fr);}
  .grid-4,.pay-row,.stats-grid{grid-template-columns:repeat(2,1fr);}
  .showcase{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section{padding:60px 0;}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .nav-toggle{display:grid;}
  .header-actions{margin-left:0;}
}
@media (max-width:768px){
  .grid-3,.channel-grid,.reviews,.ladder,.steps,.dl-cards,.grid-2,.sec-list{grid-template-columns:1fr;}
  .grid-4,.pay-row,.stats-grid{grid-template-columns:repeat(2,1fr);}
  .hero h1{font-size:1.7rem;}
  .hero-lead{font-size:15.5px;}
  .section{padding:52px 0;}
  .cta-band{padding:40px 24px;}
  .scene{grid-template-columns:1fr;gap:8px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .brand-text small{display:none;}
  .fab-support{padding:13px 16px;bottom:84px;}
  .fab-support span{display:none;}
  .btn-login,.btn-signup{padding:8px 13px;font-size:13px;}
}
@media (max-width:520px){
  body{font-size:15.5px;}
  .header-inner{min-height:66px;gap:10px;}
  .brand-text strong{font-size:16.5px;}
  .brand-mark{width:38px;height:38px;font-size:15px;}
  .hero-actions .btn{width:100%;}
  .hero-points{gap:8px 16px;}
  .grid-4,.pay-row,.stats-grid{grid-template-columns:1fr;}
  .panel-foot{gap:6px;}
  .mini-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: article */
:root{
  --bg:#030712;
  --bg-soft:#081229;
  --panel:rgba(15,30,60,.55);
  --panel-solid:#0a1730;
  --line:rgba(56,189,248,.18);
  --line-strong:rgba(56,189,248,.45);
  --blue:#2563eb;
  --cyan:#38bdf8;
  --violet:#6366f1;
  --text:#f8fafc;
  --muted:#94a3b8;
  --dim:#64748b;
  --ok:#22c55e;
  --warn:#fbbf24;
  --radius:20px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow:0 20px 50px rgba(2,6,23,.65);
  --glow:0 0 26px rgba(56,189,248,.35);
  --glow-strong:0 0 38px rgba(37,99,235,.55);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter','Segoe UI',system-ui,-apple-system,'Noto Sans',sans-serif;
  color:var(--text);
  line-height:1.66;
  font-size:16px;
  background:
    radial-gradient(1100px 560px at 10% -8%, rgba(37,99,235,.30), transparent 62%),
    radial-gradient(900px 520px at 94% 2%, rgba(56,189,248,.16), transparent 64%),
    radial-gradient(900px 600px at 50% 120%, rgba(99,102,241,.16), transparent 60%),
    var(--bg);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--cyan);text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:#7dd3fc;}
h1,h2,h3,h4{margin:0 0 12px;font-weight:800;line-height:1.3;letter-spacing:-.01em;}
p{margin:0 0 14px;}
ul,ol{margin:0 0 16px;padding-left:20px;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.container{width:100%;max-width:var(--container);padding-left:20px;padding-right:20px;margin:0 auto;}
.section{padding:66px 0;position:relative;}
.section-alt{
  background:linear-gradient(180deg,rgba(8,18,41,.72),rgba(3,7,18,.25));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section-head{margin-bottom:34px;max-width:780px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;color:#7dd3fc;margin-bottom:12px;
}
.section-head h2{font-size:clamp(1.4rem,2.4vw,2rem);}
.section-head p{color:var(--muted);font-size:15.5px;margin:0;}
/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  backdrop-filter:blur(16px);
  background:rgba(3,7,18,.82);
  border-bottom:1px solid rgba(56,189,248,.14);
  transition:box-shadow .3s ease,background .3s ease;
}
.site-header.is-stuck{box-shadow:0 10px 40px rgba(2,6,23,.75);background:rgba(3,7,18,.94);}
.header-inner{display:flex;align-items:center;gap:16px;min-height:74px;}
.brand{display:flex;align-items:center;gap:11px;color:var(--text);flex-shrink:0;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:42px;height:42px;border-radius:13px;
  display:grid;place-items:center;font-size:17px;color:#04101f;
  background:linear-gradient(140deg,#7dd3fc,#2563eb 60%,#4f46e5);
  box-shadow:0 0 22px rgba(56,189,248,.5);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:19px;font-weight:800;letter-spacing:-.02em;}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  color:var(--muted);font-size:14.5px;font-weight:500;
  padding:9px 14px;border-radius:var(--radius-pill);
  transition:color .25s ease,background .25s ease,box-shadow .25s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(56,189,248,.10);}
.nav-link.active{color:#e0f2fe;background:rgba(37,99,235,.22);box-shadow:inset 0 0 0 1px rgba(56,189,248,.35);}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;margin-left:auto;}
.main-nav + .header-actions{margin-left:0;}
.btn-login{
  padding:9px 16px;border-radius:var(--radius-pill);font-size:14px;font-weight:600;
  color:#bae6fd;border:1px solid rgba(56,189,248,.40);background:transparent;
}
.btn-login:hover{color:#fff;background:rgba(56,189,248,.14);border-color:var(--cyan);}
.btn-signup{
  padding:9px 20px;border-radius:var(--radius-pill);font-size:14px;font-weight:700;
  color:#03101f;background:linear-gradient(135deg,#7dd3fc,#38bdf8 42%,#2563eb);
  box-shadow:0 0 20px rgba(56,189,248,.45);
  transition:transform .22s ease,box-shadow .22s ease;
}
.btn-signup:hover{color:#03101f;transform:translateY(-2px);box-shadow:0 0 32px rgba(56,189,248,.7);}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(15,30,60,.6);color:var(--cyan);font-size:17px;
  display:none;place-items:center;margin-left:auto;
}
.mobile-nav{border-top:1px solid rgba(56,189,248,.14);padding:10px 0 16px;background:rgba(3,7,18,.96);}
.mobile-nav .m-link{
  display:block;padding:12px 14px;border-radius:12px;color:var(--muted);
  font-weight:600;font-size:15px;
}
.mobile-nav .m-link:hover{background:rgba(56,189,248,.1);color:#fff;}
.mobile-nav .m-link.active{color:#e0f2fe;background:rgba(37,99,235,.2);}
/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  border:0;cursor:pointer;font-weight:600;border-radius:var(--radius-pill);
  padding:14px 26px;font-size:15px;text-align:center;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease;
}
.btn-glow{
  color:#03101f;
  background:linear-gradient(135deg,#7dd3fc,#38bdf8 40%,#2563eb);
  box-shadow:0 0 24px rgba(56,189,248,.5);
}
.btn-glow:hover{color:#03101f;transform:translateY(-3px);box-shadow:0 0 40px rgba(56,189,248,.78);}
.btn-glow:active{transform:translateY(0);}
.btn-ghost{
  color:#cbd5e1;background:rgba(15,30,60,.55);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.32);
}
.btn-ghost:hover{color:#fff;background:rgba(37,99,235,.28);box-shadow:inset 0 0 0 1px var(--cyan);}
.btn-line{
  color:#bae6fd;background:transparent;box-shadow:inset 0 0 0 1px rgba(56,189,248,.4);
  padding:11px 20px;font-size:14px;
}
.btn-line:hover{color:#fff;background:rgba(56,189,248,.14);}
.btn-sm{padding:10px 18px;font-size:13.5px;}
/* ---------- Article hero ---------- */
.article-hero{position:relative;overflow:hidden;padding:40px 0 56px;border-bottom:1px solid var(--line);}
.article-hero .hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.26;filter:saturate(1.05);
}
.article-hero::after{
  content:'';position:absolute;inset:0;
  background:
    linear-gradient(100deg, rgba(3,7,18,.96) 6%, rgba(3,7,18,.82) 50%, rgba(3,7,18,.58) 100%),
    radial-gradient(640px 380px at 84% 22%, rgba(37,99,235,.36), transparent 70%);
}
.article-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:var(--dim);margin-bottom:22px;}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:#7dd3fc;}
.crumbs .sep{color:var(--dim);opacity:.7;}
.article-hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:46px;align-items:center;}
.badge-glow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;
  color:#bae6fd;background:rgba(37,99,235,.20);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.4),0 0 18px rgba(56,189,248,.22);
}
.article-hero h1{margin:18px 0 0;font-size:clamp(1.6rem,3vw,2.35rem);line-height:1.28;}
.article-hero .hero-lead{color:#cbd5e1;font-size:16px;margin-top:16px;max-width:660px;}
.meta-row{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:24px;font-size:13.5px;color:var(--muted);}
.meta-item{display:inline-flex;align-items:center;gap:8px;}
.meta-item i{color:var(--cyan);}
.article-hero-media{
  margin:0;position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line-strong);box-shadow:var(--shadow),var(--glow);
}
.article-hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
/* ---------- Article layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:46px;align-items:start;}
.article-body{min-width:0;}
.summary-box{
  border-radius:var(--radius);padding:22px 24px;margin-bottom:34px;
  background:linear-gradient(135deg,rgba(37,99,235,.20),rgba(56,189,248,.06));
  border:1px solid var(--line-strong);
}
.summary-box h2{
  font-size:13px;text-transform:uppercase;letter-spacing:.12em;
  color:#7dd3fc;margin-bottom:10px;font-weight:700;
}
.summary-box p{margin:0;color:#dbeafe;font-size:15.5px;}
.article-content{font-size:16.5px;color:#e2e8f0;}
.article-content h2{
  font-size:clamp(1.25rem,2vw,1.6rem);margin:38px 0 14px;padding-left:14px;
  border-left:3px solid var(--cyan);
}
.article-content h3{font-size:1.15rem;margin:28px 0 10px;color:#e0f2fe;}
.article-content a{color:#7dd3fc;text-decoration:underline;text-underline-offset:3px;}
.article-content ul,.article-content ol{padding-left:22px;}
.article-content li{margin-bottom:8px;}
.article-content img{border-radius:var(--radius-sm);margin:22px 0;border:1px solid var(--line);}
.article-content blockquote{
  margin:24px 0;padding:18px 22px;color:#cbd5e1;
  border-left:3px solid var(--blue);background:rgba(15,30,60,.5);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
}
.article-content table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;}
.article-content th,.article-content td{border:1px solid var(--line);padding:12px 14px;text-align:left;}
.article-content th{background:rgba(37,99,235,.16);color:#e0f2fe;}
.empty-state{
  padding:38px 28px;border:1px dashed var(--line-strong);border-radius:var(--radius);
  background:rgba(15,30,60,.42);
}
.empty-state i{font-size:26px;color:var(--cyan);margin-bottom:14px;display:block;}
.empty-state h2{font-size:1.25rem;margin-bottom:10px;}
.empty-state p{color:var(--muted);margin-bottom:20px;}
/* ---------- Sidebar ---------- */
.article-side{position:sticky;top:96px;display:grid;gap:18px;}
.side-card{
  border-radius:var(--radius);border:1px solid var(--line);
  background:rgba(10,23,48,.74);backdrop-filter:blur(12px);
  padding:20px 20px 22px;box-shadow:var(--shadow);
}
.side-card h3{font-size:15px;color:#e0f2fe;margin-bottom:14px;display:flex;gap:9px;align-items:center;}
.side-card h3 i{color:var(--cyan);}
.side-card .btn{width:100%;}
.side-list{list-style:none;margin:0;padding:0;display:grid;gap:10px;font-size:14px;color:var(--muted);}
.side-list li{display:flex;gap:9px;align-items:flex-start;}
.side-list li i{color:var(--ok);margin-top:5px;font-size:12px;}
.pay-chips{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  display:inline-flex;align-items:center;gap:7px;padding:7px 12px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;color:#bae6fd;background:rgba(37,99,235,.16);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.28);
}
/* ---------- Download band ---------- */
.download-band{
  position:relative;overflow:hidden;border-radius:var(--radius);padding:40px;
  display:grid;grid-template-columns:1.08fr .92fr;gap:38px;align-items:center;
  background:linear-gradient(135deg,rgba(37,99,235,.30),rgba(99,102,241,.14));
  border:1px solid var(--line-strong);box-shadow:var(--shadow);
}
.download-band::after{
  content:'';position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,189,248,.30),transparent 68%);
}
.download-band > *{position:relative;z-index:2;}
.download-band h2{font-size:clamp(1.35rem,2.3vw,1.85rem);}
.download-band p{color:#cbd5e1;font-size:15.5px;max-width:560px;}
.download-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
.device-panel{display:grid;gap:14px;}
.device-row{
  display:flex;gap:14px;align-items:center;padding:16px 18px;border-radius:var(--radius-sm);
  background:rgba(3,7,18,.55);border:1px solid var(--line);
}
.device-row i{font-size:24px;color:#7dd3fc;width:30px;text-align:center;}
.device-row strong{display:block;font-size:15px;}
.device-row span{font-size:13.5px;color:var(--muted);}
/* ---------- Grids & cards ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.info-card{
  border-radius:var(--radius);border:1px solid var(--line);
  background:rgba(10,23,48,.62);padding:24px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.info-card:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:0 18px 40px rgba(2,6,23,.6),var(--glow);}
.info-card .ic{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:rgba(37,99,235,.2);color:#7dd3fc;font-size:18px;margin-bottom:14px;
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.32);
}
.info-card h3{font-size:17px;margin-bottom:9px;}
.info-card p{color:var(--muted);font-size:14.6px;margin:0;}
/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.step{
  position:relative;padding:28px 22px 22px;border-radius:var(--radius);
  border:1px solid var(--line);background:rgba(10,23,48,.55);
  transition:border-color .25s ease,transform .25s ease;
}
.step:hover{border-color:var(--line-strong);transform:translateY(-4px);}
.step .num{
  display:inline-grid;place-items:center;width:36px;height:36px;border-radius:12px;
  font-weight:800;font-size:15px;color:#03101f;
  background:linear-gradient(135deg,#7dd3fc,#2563eb);margin-bottom:16px;
}
.step h3{font-size:16.5px;margin-bottom:8px;}
.step p{color:var(--muted);font-size:14.5px;margin:0;}
/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:rgba(10,23,48,.55);overflow:hidden;transition:border-color .25s ease;
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 20px;font-weight:600;font-size:15.5px;
  display:flex;justify-content:space-between;gap:18px;align-items:center;color:#e2e8f0;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:'\f067';font-family:'Font Awesome 6 Free';font-weight:900;
  color:var(--cyan);transition:transform .25s ease;font-size:13px;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item p{padding:0 20px 18px;margin:0;color:var(--muted);font-size:15px;}
/* ---------- Category matrix ---------- */
.cat-matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.cat-card{
  display:block;padding:24px;border-radius:var(--radius);color:var(--text);
  border:1px solid var(--line);background:rgba(10,23,48,.6);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease,color .25s ease;
}
.cat-card:hover{transform:translateY(-4px);border-color:var(--line-strong);color:#fff;box-shadow:var(--glow);}
.cat-card i{font-size:20px;color:#7dd3fc;margin-bottom:14px;display:block;}
.cat-card strong{display:block;font-size:17px;margin-bottom:8px;}
.cat-card span{color:var(--muted);font-size:14.5px;display:block;}
.cat-card em{display:inline-block;margin-top:14px;font-style:normal;color:#7dd3fc;font-size:13.5px;font-weight:600;}
/* ---------- Post list ---------- */
.post-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.post-item{
  display:flex;gap:16px;padding:16px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:rgba(10,23,48,.5);color:var(--text);
  transition:border-color .25s ease,transform .25s ease;
}
.post-item:hover{border-color:var(--line-strong);color:#fff;transform:translateY(-3px);}
.post-item img{width:108px;height:80px;object-fit:cover;border-radius:10px;flex-shrink:0;}
.post-meta{display:flex;flex-direction:column;justify-content:center;gap:6px;min-width:0;}
.post-meta strong{font-size:15px;line-height:1.45;font-weight:600;}
.post-meta small{color:var(--dim);font-size:12.5px;}
.list-more{margin-top:24px;}
/* ---------- CTA ---------- */
.cta-band{
  border-radius:var(--radius);padding:46px 34px;text-align:center;
  background:linear-gradient(135deg,rgba(37,99,235,.32),rgba(56,189,248,.12));
  border:1px solid var(--line-strong);box-shadow:var(--shadow);
}
.cta-band h2{font-size:clamp(1.35rem,2.4vw,1.9rem);}
.cta-band p{color:#cbd5e1;max-width:640px;margin:0 auto 24px;font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}
/* ---------- FAB ---------- */
.fab-neon{
  position:fixed;left:16px;bottom:96px;z-index:50;width:56px;height:56px;border-radius:999px;
  display:grid;place-items:center;color:#e0f2fe;font-size:20px;
  background:rgba(7,7,13,.78);backdrop-filter:blur(12px);opacity:.84;
  box-shadow:0 0 20px rgba(56,189,248,.45),inset 0 0 0 1px rgba(56,189,248,.55);
  transition:transform .25s ease,opacity .25s ease,box-shadow .25s ease;
  animation:fabPulse 3.2s ease-in-out infinite;
}
.fab-neon:hover{opacity:1;transform:scale(1.08);color:#fff;box-shadow:0 0 34px rgba(56,189,248,.85);}
.fab-neon:active{transform:scale(.95);}
.fab-neon .fab-dot{
  position:absolute;top:7px;right:7px;width:10px;height:10px;border-radius:50%;
  background:#f43f5e;box-shadow:0 0 10px rgba(244,63,94,.9);animation:dotPulse 1.6s infinite;
}
@keyframes fabPulse{
  0%,100%{box-shadow:0 0 18px rgba(56,189,248,.40),inset 0 0 0 1px rgba(56,189,248,.50);}
  50%{box-shadow:0 0 30px rgba(99,102,241,.70),inset 0 0 0 1px rgba(99,102,241,.70);}
}
@keyframes dotPulse{0%,100%{transform:scale(1);opacity:1;}50%{transform:scale(1.35);opacity:.65;}}
/* ---------- Footer ---------- */
.site-footer{
  margin-top:20px;padding:58px 0 26px;
  background:linear-gradient(180deg,rgba(8,18,41,.85),rgba(3,7,18,.98));
  border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:34px;}
.footer-brand p{color:var(--muted);font-size:14.5px;margin:16px 0 18px;max-width:380px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.footer-col h4{font-size:14px;text-transform:uppercase;letter-spacing:.1em;color:#bae6fd;margin-bottom:16px;}
.footer-col a,.footer-col span{display:block;color:var(--muted);font-size:14.5px;margin-bottom:10px;}
.footer-col a:hover{color:#7dd3fc;}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(56,189,248,.14);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  color:var(--dim);font-size:13px;
}
/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .article-hero-grid{grid-template-columns:1fr;gap:30px;}
  .article-layout{grid-template-columns:1fr;}
  .article-side{position:static;grid-template-columns:repeat(2,1fr);display:grid;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .download-band{grid-template-columns:1fr;padding:32px;}
  .cat-matrix{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:991.98px){
  .nav-toggle{display:grid;}
  .header-actions{margin-left:auto;}
}
@media (max-width:768px){
  body{font-size:15.5px;}
  .section{padding:50px 0;}
  .article-hero{padding:28px 0 42px;}
  .article-layout{gap:34px;}
  .grid-4,.grid-3,.steps,.post-list,.article-side{grid-template-columns:1fr;}
  .article-content{font-size:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .download-actions .btn,.cta-actions .btn{width:100%;}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px;}
  .brand-text strong{font-size:17px;}
  .brand-text small{font-size:10px;}
  .btn-login{padding:8px 12px;font-size:13px;}
  .btn-signup{padding:8px 14px;font-size:13px;}
  .download-band{padding:24px;}
  .cta-band{padding:34px 20px;}
  .post-item{flex-direction:column;}
  .post-item img{width:100%;height:150px;}
  .fab-neon{left:12px;bottom:84px;}
}

/* roulang page: category1 */
:root{
  --bg:#030712;
  --bg-soft:#081229;
  --panel:rgba(15,30,60,.55);
  --panel-solid:#0a1730;
  --line:rgba(56,189,248,.18);
  --line-strong:rgba(56,189,248,.45);
  --blue:#2563eb;
  --cyan:#38bdf8;
  --violet:#6366f1;
  --text:#f8fafc;
  --muted:#94a3b8;
  --dim:#64748b;
  --ok:#22c55e;
  --warn:#fbbf24;
  --radius:20px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow:0 20px 50px rgba(2,6,23,.65);
  --glow:0 0 26px rgba(56,189,248,.35);
  --glow-strong:0 0 38px rgba(37,99,235,.55);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter','Segoe UI',system-ui,-apple-system,'Noto Sans',sans-serif;
  color:var(--text);
  line-height:1.65;
  font-size:16px;
  background:
    radial-gradient(1100px 560px at 10% -8%, rgba(37,99,235,.30), transparent 62%),
    radial-gradient(900px 520px at 94% 2%, rgba(56,189,248,.16), transparent 64%),
    radial-gradient(900px 600px at 50% 120%, rgba(99,102,241,.16), transparent 60%),
    var(--bg);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--cyan);text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:#7dd3fc;}
button,input{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;font-weight:800;line-height:1.26;letter-spacing:-.02em;color:var(--text);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.container{max-width:var(--container);padding-left:20px;padding-right:20px;}
/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  backdrop-filter:blur(16px);
  background:rgba(3,7,18,.82);
  border-bottom:1px solid rgba(56,189,248,.14);
  transition:box-shadow .3s ease,background .3s ease;
}
.site-header.is-stuck{box-shadow:0 10px 40px rgba(2,6,23,.75);background:rgba(3,7,18,.94);}
.header-inner{display:flex;align-items:center;gap:18px;min-height:74px;}
.brand{display:flex;align-items:center;gap:11px;color:var(--text);flex-shrink:0;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:42px;height:42px;border-radius:13px;
  display:grid;place-items:center;font-size:17px;color:#04101f;
  background:linear-gradient(140deg,#7dd3fc,#2563eb 60%,#4f46e5);
  box-shadow:0 0 22px rgba(56,189,248,.5);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:19px;font-weight:800;letter-spacing:-.02em;}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  color:var(--muted);font-size:14.5px;font-weight:500;
  padding:9px 14px;border-radius:var(--radius-pill);
  transition:color .25s ease,background .25s ease,box-shadow .25s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(56,189,248,.10);}
.nav-link.active{color:#e0f2fe;background:rgba(37,99,235,.22);box-shadow:inset 0 0 0 1px rgba(56,189,248,.35);}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.btn-login{
  padding:9px 16px;border-radius:var(--radius-pill);font-size:14px;font-weight:600;
  color:#bae6fd;border:1px solid rgba(56,189,248,.40);background:transparent;
}
.btn-login:hover{color:#fff;background:rgba(56,189,248,.14);border-color:var(--cyan);}
.btn-signup{
  padding:9px 20px;border-radius:var(--radius-pill);font-size:14px;font-weight:700;
  color:#03101f;background:linear-gradient(135deg,#7dd3fc,#38bdf8 42%,#2563eb);
  box-shadow:0 0 20px rgba(56,189,248,.45);
  transition:transform .22s ease,box-shadow .22s ease;
}
.btn-signup:hover{color:#03101f;transform:translateY(-2px);box-shadow:0 0 32px rgba(56,189,248,.7);}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(15,30,60,.6);color:var(--cyan);font-size:17px;
  display:grid;place-items:center;margin-left:auto;
}
.mobile-nav{border-top:1px solid rgba(56,189,248,.14);padding:10px 0 16px;background:rgba(3,7,18,.96);}
.mobile-nav .m-link{
  display:block;padding:12px 14px;border-radius:12px;color:var(--muted);
  font-weight:600;font-size:15px;
}
.mobile-nav .m-link:hover{background:rgba(56,189,248,.1);color:#fff;}
.mobile-nav .m-link.active{color:#e0f2fe;background:rgba(37,99,235,.2);}
/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  border:0;cursor:pointer;font-weight:600;border-radius:var(--radius-pill);
  padding:14px 26px;font-size:15px;text-align:center;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease;
}
.btn-glow{
  color:#03101f;
  background:linear-gradient(135deg,#7dd3fc,#38bdf8 40%,#2563eb);
  box-shadow:0 0 24px rgba(56,189,248,.5);
}
.btn-glow:hover{color:#03101f;transform:translateY(-3px);box-shadow:0 0 40px rgba(56,189,248,.78);}
.btn-glow:active{transform:translateY(0);}
.btn-ghost{
  color:#cbd5e1;background:rgba(15,30,60,.55);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.32);
}
.btn-ghost:hover{color:#fff;background:rgba(37,99,235,.28);box-shadow:inset 0 0 0 1px var(--cyan);}
.btn-line{
  color:#bae6fd;background:transparent;box-shadow:inset 0 0 0 1px rgba(56,189,248,.4);
  padding:11px 20px;font-size:14px;
}
.btn-line:hover{color:#fff;background:rgba(56,189,248,.14);}
.btn-sm{padding:10px 18px;font-size:13.5px;}
/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:74px 0 78px;}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  filter:saturate(1.05);opacity:.40;
}
.hero::after{
  content:'';position:absolute;inset:0;
  background:
    linear-gradient(100deg, rgba(3,7,18,.96) 8%, rgba(3,7,18,.82) 46%, rgba(3,7,18,.56) 100%),
    radial-gradient(700px 400px at 78% 30%, rgba(37,99,235,.35), transparent 70%);
}
.hero-inner{position:relative;z-index:2;}
.crumb{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--dim);margin-bottom:20px;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--cyan);}
.badge-glow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;
  color:#bae6fd;background:rgba(37,99,235,.20);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.4),0 0 18px rgba(56,189,248,.22);
}
.hero h1{
  margin-top:20px;font-size:clamp(1.85rem,3.5vw,2.7rem);font-weight:800;
  line-height:1.22;
}
.hero h1 .hl{
  background:linear-gradient(120deg,#7dd3fc,#38bdf8 45%,#818cf8);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{margin-top:20px;color:#cbd5e1;font-size:16.5px;line-height:1.7;max-width:600px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-note{margin-top:16px;font-size:13.5px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px 18px;}
.hero-note span{display:inline-flex;align-items:center;gap:7px;}
.hero-note i{color:var(--cyan);}
.kpi-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:32px;}
.kpi{
  padding:16px 18px;border-radius:var(--radius-sm);
  background:rgba(8,18,41,.68);border:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.kpi strong{display:block;font-size:19px;font-weight:800;color:#e0f2fe;letter-spacing:-.02em;}
.kpi span{font-size:12.5px;color:var(--muted);}
.hero-visual{position:relative;padding:0 0 24px 24px;}
.hero-shot{
  width:100%;border-radius:24px;border:1px solid var(--line-strong);
  box-shadow:0 30px 70px rgba(2,6,23,.8),0 0 46px rgba(56,189,248,.22);
}
.float-card{
  position:absolute;padding:14px 18px;border-radius:16px;
  background:rgba(8,18,41,.92);backdrop-filter:blur(10px);
  border:1px solid var(--line-strong);box-shadow:var(--shadow);
  font-size:13px;color:#cbd5e1;display:flex;align-items:center;gap:10px;
}
.float-card i{color:var(--cyan);font-size:16px;}
.float-card--a{bottom:-6px;left:-10px;}
.float-card--b{top:-14px;right:-6px;}
/* ---------- Sections ---------- */
.section{padding:74px 0;position:relative;}
.section--alt{
  background:linear-gradient(180deg,rgba(8,18,41,.72),rgba(3,7,18,.25));
  border-top:1px solid rgba(56,189,248,.10);
  border-bottom:1px solid rgba(56,189,248,.10);
}
.section-head{max-width:780px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:14px;
}
.eyebrow::before{content:'';width:26px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--cyan),transparent);}
.section-title{font-size:clamp(1.45rem,2.5vw,2.05rem);}
.section-lead{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.7;}
.glass{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  backdrop-filter:blur(14px);box-shadow:var(--shadow);
}
/* feature cards */
.feature{
  height:100%;padding:26px 24px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  backdrop-filter:blur(12px);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.feature:hover{
  transform:translateY(-6px);border-color:var(--line-strong);
  box-shadow:0 22px 50px rgba(2,6,23,.7),0 0 24px rgba(56,189,248,.2);
}
.ico{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  font-size:19px;color:#7dd3fc;background:rgba(37,99,235,.20);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.32);
  margin-bottom:18px;
}
.feature h3{font-size:17px;margin-bottom:9px;}
.feature p{color:var(--muted);font-size:14.5px;line-height:1.68;}
/* platform panels */
.platform{
  height:100%;padding:28px 26px;border-radius:var(--radius);
  background:linear-gradient(165deg,rgba(37,99,235,.16),rgba(8,18,41,.62));
  border:1px solid var(--line);
}
.platform-title{display:flex;align-items:center;gap:12px;font-size:18px;font-weight:700;margin-bottom:6px;}
.platform-title i{color:var(--cyan);font-size:20px;}
.platform p.hint{color:var(--muted);font-size:14px;margin-bottom:14px;}
.step{display:flex;gap:15px;padding:16px 0;border-bottom:1px dashed rgba(56,189,248,.16);}
.step:last-child{border-bottom:0;padding-bottom:0;}
.step-no{
  flex:0 0 34px;width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  font-size:13.5px;font-weight:800;color:#03101f;
  background:linear-gradient(135deg,#7dd3fc,#2563eb);
  box-shadow:0 0 16px rgba(56,189,248,.35);
}
.step-body h4{font-size:15px;font-weight:700;margin-bottom:4px;}
.step-body p{color:var(--muted);font-size:14px;line-height:1.62;}
/* spec list */
.spec{display:flex;gap:13px;padding:14px 0;border-bottom:1px solid rgba(56,189,248,.12);color:#cbd5e1;font-size:15px;}
.spec:last-child{border-bottom:0;}
.spec i{color:var(--cyan);margin-top:5px;font-size:15px;}
.spec strong{color:#e0f2fe;}
.side-visual{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line-strong);
  box-shadow:0 26px 60px rgba(2,6,23,.72),0 0 34px rgba(56,189,248,.16);
}
/* scenario */
.scenario{
  height:100%;padding:24px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(37,99,235,.14),rgba(8,18,41,.55));
  border:1px solid var(--line);
  transition:border-color .25s ease,transform .25s ease;
}
.scenario:hover{border-color:var(--line-strong);transform:translateY(-4px);}
.scenario .tag{
  display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:700;
  text-transform:uppercase;letter-spacing:.06em;color:var(--warn);
  background:rgba(251,191,36,.13);border-radius:var(--radius-pill);padding:5px 12px;
  margin-bottom:14px;
}
.scenario h3{font-size:16.5px;margin-bottom:10px;}
.scenario p{color:var(--muted);font-size:14.5px;line-height:1.68;}
/* checklist */
.check li{display:flex;gap:13px;padding:11px 0;color:#cbd5e1;font-size:15px;line-height:1.65;}
.check i{color:var(--ok);margin-top:5px;font-size:15px;}
/* quotes */
.quote{
  height:100%;padding:26px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);backdrop-filter:blur(12px);
}
.stars{color:var(--warn);font-size:13px;letter-spacing:3px;margin-bottom:14px;}
.quote p{color:#dbeafe;font-size:14.8px;line-height:1.72;}
.who{margin-top:16px;font-size:13.5px;color:var(--muted);display:flex;align-items:center;gap:9px;}
.who i{color:var(--cyan);}
/* channel matrix */
.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.matrix a{
  display:block;padding:24px;border-radius:var(--radius);
  background:rgba(15,30,60,.48);border:1px solid var(--line);
  color:var(--text);transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.matrix a:hover{
  transform:translateY(-5px);border-color:var(--line-strong);color:var(--text);
  box-shadow:0 20px 44px rgba(2,6,23,.62),0 0 24px rgba(56,189,248,.2);
}
.matrix h3{font-size:17px;margin-bottom:9px;}
.matrix p{color:var(--muted);font-size:14px;line-height:1.65;}
.matrix .go{margin-top:14px;display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--cyan);font-weight:600;}
/* posts */
.post-card{
  display:flex;flex-direction:column;height:100%;
  border-radius:var(--radius);overflow:hidden;
  background:var(--panel);border:1px solid var(--line);
  color:var(--text);backdrop-filter:blur(12px);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.post-card:hover{transform:translateY(-6px);border-color:var(--line-strong);color:var(--text);box-shadow:0 22px 50px rgba(2,6,23,.7);}
.post-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid var(--line);}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:12px;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);}
.post-meta span{display:inline-flex;align-items:center;gap:6px;}
.post-card h3{font-size:16.5px;line-height:1.45;}
.post-card p{color:var(--muted);font-size:14px;line-height:1.65;}
.post-more{margin-top:auto;font-size:13.5px;font-weight:600;color:var(--cyan);display:inline-flex;align-items:center;gap:8px;}
.empty-note{
  padding:26px;border-radius:var(--radius);border:1px dashed var(--line-strong);
  background:rgba(8,18,41,.5);color:var(--muted);font-size:15px;text-align:center;
}
/* FAQ */
.faq-acc .accordion-item{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius)!important;margin-bottom:14px;overflow:hidden;
}
.faq-acc .accordion-button{
  background:transparent;color:var(--text);font-weight:600;font-size:16px;
  padding:19px 22px;box-shadow:none!important;line-height:1.5;
}
.faq-acc .accordion-button:not(.collapsed){color:#bae6fd;background:rgba(37,99,235,.18);}
.faq-acc .accordion-button::after{filter:brightness(0) invert(1);opacity:.75;}
.faq-acc .accordion-button:focus{border-color:transparent;}
.faq-acc .accordion-body{color:var(--muted);font-size:14.8px;line-height:1.72;padding:0 22px 20px;}
/* CTA band */
.cta-band{
  padding:48px 44px;border-radius:26px;
  background:
    radial-gradient(600px 300px at 88% 12%, rgba(56,189,248,.24), transparent 65%),
    linear-gradient(135deg,rgba(37,99,235,.30),rgba(8,18,41,.88));
  border:1px solid var(--line-strong);
  box-shadow:var(--glow-strong);
}
.cta-band h2{font-size:clamp(1.4rem,2.4vw,1.95rem);}
.cta-band p{color:#cbd5e1;margin-top:14px;font-size:15.5px;line-height:1.7;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
/* FAB */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:1050;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 20px;min-height:52px;border-radius:var(--radius-pill);
  font-size:14px;font-weight:600;color:#e0f2fe;
  background:
    linear-gradient(rgba(7,12,25,.9),rgba(7,12,25,.9)) padding-box,
    linear-gradient(120deg,#22d3ee,#2563eb 60%,#ec4899) border-box;
  border:1px solid transparent;
  backdrop-filter:blur(12px);
  opacity:.78;
  transition:opacity .25s ease,transform .25s ease,box-shadow .25s ease,color .25s ease;
  animation:fabPulse 3.4s ease-in-out infinite;
}
.fab:hover{opacity:1;color:#fff;transform:scale(1.06);box-shadow:0 0 34px rgba(56,189,248,.72);}
.fab:active{transform:scale(.95);}
.fab i{font-size:16px;color:#7dd3fc;}
.fab .dot{width:10px;height:10px;border-radius:50%;background:#f43f5e;box-shadow:0 0 10px #f43f5e;}
@keyframes fabPulse{
  0%,100%{box-shadow:0 0 18px rgba(56,189,248,.32);}
  50%{box-shadow:0 0 30px rgba(34,211,238,.6);}
}
/* ---------- Footer ---------- */
.site-footer{
  margin-top:18px;padding:64px 0 26px;
  background:linear-gradient(180deg,rgba(8,18,41,.92),rgba(3,7,18,.98));
  border-top:1px solid rgba(56,189,248,.16);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px;}
.footer-brand .brand{margin-bottom:4px;}
.footer-brand p{color:var(--muted);margin-top:16px;font-size:14.5px;line-height:1.7;max-width:390px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.chip{
  display:inline-flex;align-items:center;gap:7px;padding:7px 13px;
  border-radius:var(--radius-pill);font-size:12.5px;color:#bae6fd;
  background:rgba(37,99,235,.16);box-shadow:inset 0 0 0 1px rgba(56,189,248,.28);
}
.footer-col h4{
  font-size:13.5px;text-transform:uppercase;letter-spacing:.09em;
  color:#e0f2fe;margin-bottom:16px;font-weight:700;
}
.footer-col a,.footer-col span{display:block;color:var(--muted);font-size:14.5px;padding:6px 0;}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(56,189,248,.14);
  display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;
  color:var(--dim);font-size:13.5px;
}
/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .hero{padding:58px 0 64px;}
  .hero-visual{padding:0 0 18px 18px;margin-top:12px;}
  .float-card--a{left:0;}
  .float-card--b{right:0;}
  .matrix{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  body{font-size:15.5px;}
  .section{padding:54px 0;}
  .hero h1{font-size:1.72rem;}
  .hero-actions .btn{width:100%;}
  .cta-band{padding:34px 24px;border-radius:22px;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .fab{bottom:84px;left:12px;padding:12px 16px;font-size:13px;}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px;}
  .kpi-grid{grid-template-columns:1fr;}
  .hero-visual{padding:0;}
  .float-card{position:static;margin-top:12px;}
  .footer-grid{grid-template-columns:1fr;}
  .brand-text small{display:none;}
}

/* roulang page: category2 */
:root{
  --bg:#030712;
  --bg-soft:#081229;
  --panel:rgba(15,30,60,.55);
  --panel-solid:#0a1730;
  --line:rgba(56,189,248,.18);
  --line-strong:rgba(56,189,248,.45);
  --blue:#2563eb;
  --cyan:#38bdf8;
  --violet:#6366f1;
  --text:#f8fafc;
  --muted:#94a3b8;
  --dim:#64748b;
  --ok:#22c55e;
  --warn:#fbbf24;
  --radius:20px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow:0 20px 50px rgba(2,6,23,.65);
  --glow:0 0 26px rgba(56,189,248,.35);
  --glow-strong:0 0 38px rgba(37,99,235,.55);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:'Inter','Segoe UI',system-ui,-apple-system,'Noto Sans',sans-serif;
  color:var(--text);
  line-height:1.65;
  font-size:16px;
  background:
    radial-gradient(1100px 560px at 10% -8%, rgba(37,99,235,.30), transparent 62%),
    radial-gradient(900px 520px at 94% 2%, rgba(56,189,248,.16), transparent 64%),
    radial-gradient(900px 600px at 50% 120%, rgba(99,102,241,.16), transparent 60%),
    var(--bg);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.25;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--cyan);text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:#7dd3fc;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:8px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:20px;padding-right:20px;}
/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  backdrop-filter:blur(16px);
  background:rgba(3,7,18,.82);
  border-bottom:1px solid rgba(56,189,248,.14);
  transition:box-shadow .3s ease,background .3s ease;
}
.site-header.is-stuck{box-shadow:0 10px 40px rgba(2,6,23,.75);background:rgba(3,7,18,.94);}
.header-inner{display:flex;align-items:center;gap:18px;min-height:74px;}
.brand{display:flex;align-items:center;gap:11px;color:var(--text);flex-shrink:0;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:42px;height:42px;border-radius:13px;
  display:grid;place-items:center;font-size:17px;color:#04101f;
  background:linear-gradient(140deg,#7dd3fc,#2563eb 60%,#4f46e5);
  box-shadow:0 0 22px rgba(56,189,248,.5);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:19px;font-weight:800;letter-spacing:-.02em;}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  color:var(--muted);font-size:14.5px;font-weight:500;
  padding:9px 14px;border-radius:var(--radius-pill);
  transition:color .25s ease,background .25s ease,box-shadow .25s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(56,189,248,.10);}
.nav-link.active{color:#e0f2fe;background:rgba(37,99,235,.22);box-shadow:inset 0 0 0 1px rgba(56,189,248,.35);}
.header-actions{display:flex;align-items:center;gap:9px;flex-shrink:0;}
.btn-login{
  padding:9px 16px;border-radius:var(--radius-pill);font-size:14px;font-weight:600;
  color:#bae6fd;border:1px solid rgba(56,189,248,.40);background:transparent;white-space:nowrap;
}
.btn-login:hover{color:#fff;background:rgba(56,189,248,.14);border-color:var(--cyan);}
.btn-signup{
  padding:9px 20px;border-radius:var(--radius-pill);font-size:14px;font-weight:700;
  color:#03101f;background:linear-gradient(135deg,#7dd3fc,#38bdf8 42%,#2563eb);
  box-shadow:0 0 20px rgba(56,189,248,.45);white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease;
}
.btn-signup:hover{color:#03101f;transform:translateY(-2px);box-shadow:0 0 32px rgba(56,189,248,.7);}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(15,30,60,.6);color:var(--cyan);font-size:17px;
  display:grid;place-items:center;cursor:pointer;
}
.nav-toggle:hover{background:rgba(37,99,235,.3);}
.mobile-nav{border-top:1px solid rgba(56,189,248,.14);padding:10px 0 16px;background:rgba(3,7,18,.96);}
.mobile-nav .m-link{
  display:block;padding:12px 14px;border-radius:12px;color:var(--muted);
  font-weight:600;font-size:15px;
}
.mobile-nav .m-link:hover{background:rgba(56,189,248,.1);color:#fff;}
.mobile-nav .m-link.active{color:#e0f2fe;background:rgba(37,99,235,.2);}
/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  border:0;cursor:pointer;font-weight:600;border-radius:var(--radius-pill);
  padding:14px 26px;font-size:15px;text-align:center;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease;
}
.btn-glow{
  color:#03101f;
  background:linear-gradient(135deg,#7dd3fc,#38bdf8 40%,#2563eb);
  box-shadow:0 0 24px rgba(56,189,248,.5);
}
.btn-glow:hover{color:#03101f;transform:translateY(-3px);box-shadow:0 0 40px rgba(56,189,248,.78);}
.btn-glow:active{transform:translateY(0);}
.btn-ghost{
  color:#cbd5e1;background:rgba(15,30,60,.55);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.32);
}
.btn-ghost:hover{color:#fff;background:rgba(37,99,235,.28);box-shadow:inset 0 0 0 1px var(--cyan);}
.btn-line{
  color:#bae6fd;background:transparent;box-shadow:inset 0 0 0 1px rgba(56,189,248,.4);
  padding:11px 20px;font-size:14px;
}
.btn-line:hover{color:#fff;background:rgba(56,189,248,.14);}
/* ---------- Hero ---------- */
.cat-hero{position:relative;overflow:hidden;padding:62px 0 52px;}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.34;}
.cat-hero::after{
  content:'';position:absolute;inset:0;
  background:
    linear-gradient(105deg, rgba(3,7,18,.97) 10%, rgba(3,7,18,.87) 52%, rgba(3,7,18,.62) 100%),
    radial-gradient(720px 420px at 84% 24%, rgba(37,99,235,.38), transparent 70%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:46px;align-items:start;}
.badge-glow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  color:#bae6fd;background:rgba(37,99,235,.20);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.4),0 0 18px rgba(56,189,248,.22);
}
.cat-hero h1{margin-top:20px;font-size:clamp(1.75rem,3.3vw,2.6rem);line-height:1.24;}
.cat-hero h1 .hl{
  background:linear-gradient(120deg,#7dd3fc,#38bdf8 45%,#818cf8);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{margin-top:18px;color:#cbd5e1;font-size:16px;line-height:1.7;max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-panel{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;backdrop-filter:blur(16px);box-shadow:var(--shadow);
}
.hero-panel h2{font-size:1.05rem;}
.panel-list{margin-top:18px;display:grid;gap:12px;}
.panel-list li{display:flex;gap:11px;font-size:14.5px;color:#cbd5e1;line-height:1.55;}
.panel-list li i{color:var(--cyan);margin-top:4px;font-size:14px;}
.panel-note{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);font-size:13px;color:var(--muted);}
.metric-strip{
  position:relative;z-index:2;margin-top:44px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  padding:22px 24px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  backdrop-filter:blur(14px);box-shadow:var(--shadow);
}
.metric strong{display:block;font-size:1.5rem;font-weight:800;color:#7dd3fc;letter-spacing:-.02em;}
.metric span{display:block;margin-top:4px;font-size:13px;color:var(--muted);line-height:1.5;}
/* ---------- Sections ---------- */
.section{padding:74px 0;position:relative;}
.section-alt{
  background:linear-gradient(180deg, rgba(8,18,41,.72), rgba(3,7,18,.25));
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#7dd3fc;
}
.section-head{max-width:760px;margin-bottom:38px;}
.section-head h2{margin-top:12px;font-size:clamp(1.4rem,2.6vw,2.05rem);}
.section-head p{margin-top:14px;color:var(--muted);line-height:1.7;}
/* ---------- Cards & lists ---------- */
.card{
  background:linear-gradient(160deg, rgba(15,30,60,.72), rgba(8,18,41,.55));
  border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 18px 40px rgba(2,6,23,.6),var(--glow);}
.card h3{font-size:1.08rem;}
.card p{margin-top:11px;color:var(--muted);font-size:14.6px;line-height:1.68;}
.icon-badge{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  font-size:19px;color:#7dd3fc;background:rgba(37,99,235,.18);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.32),0 0 18px rgba(56,189,248,.16);
}
.prep-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.check-list{display:grid;gap:14px;}
.check-item{
  display:flex;gap:14px;padding:17px 18px;border-radius:var(--radius-sm);
  background:rgba(15,30,60,.42);border:1px solid var(--line);
  transition:border-color .3s ease,background .3s ease,transform .3s ease;
}
.check-item:hover{border-color:var(--line-strong);background:rgba(37,99,235,.16);transform:translateX(4px);}
.check-item i{color:var(--ok);font-size:16px;margin-top:5px;}
.check-item h3{font-size:15.5px;font-weight:700;}
.check-item p{margin-top:5px;color:var(--muted);font-size:14px;line-height:1.6;}
.media-frame{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);}
.media-frame::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(3,7,18,.05),rgba(3,7,18,.55));}
.media-frame img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step{
  position:relative;padding:28px 22px;border-radius:var(--radius);
  background:linear-gradient(160deg, rgba(15,30,60,.7), rgba(8,18,41,.5));
  border:1px solid var(--line);transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.step:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:0 18px 40px rgba(2,6,23,.55),var(--glow);}
.step-num{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  font-weight:800;font-size:17px;color:#03101f;
  background:linear-gradient(135deg,#7dd3fc,#2563eb);
  box-shadow:0 0 18px rgba(56,189,248,.45);
}
.step h3{margin-top:16px;font-size:1.04rem;}
.step p{margin-top:10px;color:var(--muted);font-size:14.4px;line-height:1.66;}
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.method-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);font-size:12px;font-weight:600;
  color:#bae6fd;background:rgba(56,189,248,.10);box-shadow:inset 0 0 0 1px rgba(56,189,248,.28);
}
.secure-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:44px;align-items:center;}
.plain-list{display:grid;gap:13px;}
.plain-list li{display:flex;gap:12px;color:#cbd5e1;font-size:15px;line-height:1.6;}
.plain-list li i{color:var(--cyan);margin-top:5px;font-size:14px;}
/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq{
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:rgba(15,30,60,.42);padding:16px 20px;transition:border-color .3s ease,background .3s ease;
}
.faq[open]{border-color:var(--line-strong);background:rgba(37,99,235,.14);}
.faq summary{
  cursor:pointer;font-weight:600;font-size:15.5px;color:var(--text);
  list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:flex-start;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:'\f067';font-family:'Font Awesome 6 Free';font-weight:900;color:var(--cyan);font-size:13px;margin-top:4px;}
.faq[open] summary::after{content:'\f068';}
.faq p{margin-top:12px;color:var(--muted);font-size:14.6px;line-height:1.7;}
/* ---------- Category entry ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.cat-card{
  display:flex;flex-direction:column;gap:12px;padding:26px 24px;border-radius:var(--radius);
  background:linear-gradient(160deg, rgba(15,30,60,.7), rgba(8,18,41,.5));
  border:1px solid var(--line);color:var(--text);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.cat-card:hover{color:var(--text);transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 18px 40px rgba(2,6,23,.6),var(--glow);}
.cat-card h3{font-size:1.06rem;}
.cat-card p{color:var(--muted);font-size:14.4px;line-height:1.65;}
.cat-card .cat-more{margin-top:auto;font-size:13.5px;font-weight:600;color:#7dd3fc;display:flex;align-items:center;gap:7px;}
.cat-card .now{
  align-self:flex-start;padding:4px 11px;border-radius:var(--radius-pill);
  font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:#03101f;background:linear-gradient(135deg,#7dd3fc,#38bdf8);
}
/* ---------- News ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--radius);
  background:linear-gradient(160deg, rgba(15,30,60,.7), rgba(8,18,41,.5));
  border:1px solid var(--line);transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.news-card:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:0 18px 40px rgba(2,6,23,.6),var(--glow);}
.news-thumb{display:block;overflow:hidden;aspect-ratio:16/9;background:rgba(8,18,41,.6);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.news-card:hover .news-thumb img{transform:scale(1.06);}
.news-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:11px;flex:1;}
.news-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--dim);}
.news-meta .news-cat{
  color:#bae6fd;padding:3px 10px;border-radius:var(--radius-pill);
  background:rgba(56,189,248,.10);box-shadow:inset 0 0 0 1px rgba(56,189,248,.25);
}
.news-card h3{font-size:1.02rem;line-height:1.45;}
.news-card h3 a{color:var(--text);}
.news-card h3 a:hover{color:#7dd3fc;}
.news-card p{
  color:var(--muted);font-size:14.2px;line-height:1.65;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.empty-note{
  padding:26px 24px;border-radius:var(--radius-sm);border:1px dashed var(--line);
  background:rgba(15,30,60,.35);color:var(--muted);font-size:15px;
}
/* ---------- CTA ---------- */
.cta-band{padding:0 0 84px;}
.cta-inner{
  text-align:center;padding:52px 30px;border-radius:var(--radius);
  background:
    radial-gradient(600px 260px at 50% 0%, rgba(37,99,235,.38), transparent 70%),
    linear-gradient(160deg, rgba(15,30,60,.8), rgba(8,18,41,.6));
  border:1px solid var(--line-strong);box-shadow:var(--shadow),0 0 40px rgba(37,99,235,.25);
}
.cta-inner h2{font-size:clamp(1.4rem,2.6vw,2rem);}
.cta-inner p{margin:16px auto 0;max-width:660px;color:#cbd5e1;line-height:1.7;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:28px;}
/* ---------- Footer ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(8,18,41,.85), rgba(3,7,18,.98));
  padding:60px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:38px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{color:var(--muted);font-size:14.4px;line-height:1.7;max-width:420px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px;}
.chip{
  display:inline-flex;align-items:center;gap:7px;padding:6px 13px;border-radius:var(--radius-pill);
  font-size:12.5px;color:#bae6fd;background:rgba(56,189,248,.10);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.26);
}
.footer-col h4{font-size:14px;letter-spacing:.06em;text-transform:uppercase;color:#e0f2fe;margin-bottom:16px;}
.footer-col a,.footer-col span{display:block;color:var(--muted);font-size:14.2px;padding:5px 0;}
.footer-col a:hover{color:#7dd3fc;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  color:var(--dim);font-size:13.2px;
}
/* ---------- FAB ---------- */
.fab-support{
  position:fixed;left:16px;bottom:96px;z-index:50;
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 18px 12px 14px;border-radius:var(--radius-pill);
  background:rgba(7,7,13,.8);backdrop-filter:blur(16px);
  box-shadow:0 0 20px rgba(6,182,212,.45),inset 0 0 0 1px rgba(56,189,248,.45);
  color:#e0f2fe;font-size:13.5px;font-weight:600;opacity:.82;
  transition:opacity .3s ease,transform .3s ease,box-shadow .3s ease;
  animation:fabFloat 4.5s ease-in-out infinite;
}
.fab-support i{font-size:17px;color:#38bdf8;transition:transform .5s ease;}
.fab-support:hover{
  opacity:1;color:#fff;transform:translateY(-3px);
  box-shadow:0 0 26px rgba(56,189,248,.7),inset 0 0 0 1px rgba(56,189,248,.85);
}
.fab-support:hover i{transform:rotate(360deg);}
.fab-support:active{transform:translateY(1px) scale(.97);}
.fab-support .fab-dot{
  position:absolute;top:6px;right:10px;width:9px;height:9px;border-radius:50%;
  background:#f43f5e;box-shadow:0 0 0 2px rgba(3,7,18,.9),0 0 10px rgba(244,63,94,.9);
  animation:fabPulse 1.6s ease-in-out infinite;
}
@keyframes fabFloat{0%,100%{transform:translateY(0);}50%{transform:translateY(-5px);}}
@keyframes fabPulse{0%,100%{opacity:1;}50%{opacity:.35;}}
/* ---------- Responsive ---------- */
@media (min-width:992px){ .nav-toggle{display:none;} }
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .metric-strip{grid-template-columns:repeat(2,1fr);}
  .prep-grid,.secure-grid{grid-template-columns:1fr;gap:30px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .method-grid,.cat-grid,.news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .cat-hero{padding:48px 0 42px;}
  .feature-grid{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .fab-support{bottom:22px;padding:12px;gap:0;}
  .fab-support .fab-label{display:none;}
}
@media (max-width:575px){
  .header-inner{gap:10px;min-height:66px;}
  .brand-mark{width:36px;height:36px;font-size:15px;border-radius:11px;}
  .brand-text strong{font-size:16px;}
  .brand-text small{display:none;}
  .btn-login{padding:7px 10px;font-size:12.5px;}
  .btn-signup{padding:7px 13px;font-size:12.5px;}
  .nav-toggle{width:40px;height:40px;font-size:15px;}
  .steps,.method-grid,.cat-grid,.news-grid{grid-template-columns:1fr;}
  .metric-strip{grid-template-columns:1fr 1fr;padding:18px;gap:14px;}
  .metric strong{font-size:1.25rem;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-inner{padding:38px 20px;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: category3 */
:root{
  --bg:#030712;
  --bg-soft:#081229;
  --panel:rgba(15,30,60,.55);
  --panel-solid:#0a1730;
  --line:rgba(56,189,248,.18);
  --line-strong:rgba(56,189,248,.45);
  --blue:#2563eb;
  --cyan:#38bdf8;
  --violet:#6366f1;
  --text:#f8fafc;
  --muted:#94a3b8;
  --dim:#64748b;
  --ok:#22c55e;
  --warn:#fbbf24;
  --radius:20px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow:0 20px 50px rgba(2,6,23,.65);
  --glow:0 0 26px rgba(56,189,248,.35);
  --glow-strong:0 0 38px rgba(37,99,235,.55);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter','Segoe UI',system-ui,-apple-system,'Noto Sans',sans-serif;
  color:var(--text);
  line-height:1.65;
  font-size:16px;
  background:
    radial-gradient(1100px 560px at 10% -8%, rgba(37,99,235,.30), transparent 62%),
    radial-gradient(900px 520px at 94% 2%, rgba(56,189,248,.16), transparent 64%),
    radial-gradient(900px 600px at 50% 120%, rgba(99,102,241,.16), transparent 60%),
    var(--bg);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--cyan);text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:#7dd3fc;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.25;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:8px;}
.container{max-width:var(--container);padding-left:20px;padding-right:20px;margin-right:auto;margin-left:auto;}
.glass{background:var(--panel);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);}
/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  background:rgba(3,7,18,.82);
  border-bottom:1px solid rgba(56,189,248,.14);
  transition:box-shadow .3s ease,background .3s ease;
}
.site-header.is-stuck{box-shadow:0 10px 40px rgba(2,6,23,.75);background:rgba(3,7,18,.94);}
.header-inner{display:flex;align-items:center;gap:16px;min-height:74px;}
.brand{display:flex;align-items:center;gap:11px;color:var(--text);flex-shrink:0;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:42px;height:42px;border-radius:13px;
  display:grid;place-items:center;font-size:17px;color:#04101f;
  background:linear-gradient(140deg,#7dd3fc,#2563eb 60%,#4f46e5);
  box-shadow:0 0 22px rgba(56,189,248,.5);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:19px;font-weight:800;letter-spacing:-.02em;}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  color:var(--muted);font-size:14.5px;font-weight:500;
  padding:9px 14px;border-radius:var(--radius-pill);
  transition:color .25s ease,background .25s ease,box-shadow .25s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(56,189,248,.10);}
.nav-link.active{color:#e0f2fe;background:rgba(37,99,235,.22);box-shadow:inset 0 0 0 1px rgba(56,189,248,.35);}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.btn-login{
  padding:9px 16px;border-radius:var(--radius-pill);font-size:14px;font-weight:600;
  color:#bae6fd;border:1px solid rgba(56,189,248,.40);background:transparent;white-space:nowrap;
}
.btn-login:hover{color:#fff;background:rgba(56,189,248,.14);border-color:var(--cyan);}
.btn-signup{
  padding:9px 20px;border-radius:var(--radius-pill);font-size:14px;font-weight:700;
  color:#03101f;background:linear-gradient(135deg,#7dd3fc,#38bdf8 42%,#2563eb);
  box-shadow:0 0 20px rgba(56,189,248,.45);white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease;
}
.btn-signup:hover{color:#03101f;transform:translateY(-2px);box-shadow:0 0 32px rgba(56,189,248,.7);}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(15,30,60,.6);color:var(--cyan);font-size:17px;
  display:grid;place-items:center;flex-shrink:0;cursor:pointer;
}
.nav-toggle:hover{background:rgba(37,99,235,.25);}
.mobile-nav{border-top:1px solid rgba(56,189,248,.14);padding:10px 0 16px;}
.mobile-nav[hidden]{display:none;}
.mobile-nav .m-link{
  display:block;padding:12px 14px;border-radius:12px;color:var(--muted);
  font-weight:600;font-size:15px;
}
.mobile-nav .m-link:hover{background:rgba(56,189,248,.1);color:#fff;}
.mobile-nav .m-link.active{color:#e0f2fe;background:rgba(37,99,235,.2);}
.m-actions{display:flex;gap:10px;padding:12px 14px 0;}
.m-actions .btn{flex:1;}
/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  border:0;cursor:pointer;font-weight:600;border-radius:var(--radius-pill);
  padding:14px 26px;font-size:15px;text-align:center;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease;
}
.btn-glow{
  color:#03101f;
  background:linear-gradient(135deg,#7dd3fc,#38bdf8 40%,#2563eb);
  box-shadow:0 0 24px rgba(56,189,248,.5);
}
.btn-glow:hover{color:#03101f;transform:translateY(-3px);box-shadow:0 0 40px rgba(56,189,248,.78);}
.btn-glow:active{transform:translateY(0);}
.btn-ghost{
  color:#cbd5e1;background:rgba(15,30,60,.55);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.32);
}
.btn-ghost:hover{color:#fff;background:rgba(37,99,235,.28);box-shadow:inset 0 0 0 1px var(--cyan);}
.btn-line{
  color:#bae6fd;background:transparent;box-shadow:inset 0 0 0 1px rgba(56,189,248,.4);
  padding:11px 20px;font-size:14px;
}
.btn-line:hover{color:#fff;background:rgba(56,189,248,.14);}
.btn-sm{padding:10px 18px;font-size:13.5px;}
/* ---------- Category hero ---------- */
.cat-hero{position:relative;overflow:hidden;padding:64px 0 72px;}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/b06582481b3a3d8a.jpg');
  background-size:cover;background-position:center;
  opacity:.32;
}
.cat-hero::after{
  content:'';position:absolute;inset:0;
  background:
    linear-gradient(104deg, rgba(3,7,18,.97) 6%, rgba(8,18,41,.86) 46%, rgba(3,7,18,.62) 100%),
    radial-gradient(720px 420px at 82% 26%, rgba(37,99,235,.34), transparent 72%);
}
.cat-hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.06fr .94fr;gap:48px;align-items:center;}
.badge-glow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;
  color:#bae6fd;background:rgba(37,99,235,.20);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.4),0 0 18px rgba(56,189,248,.22);
}
.cat-hero h1{margin-top:20px;font-size:clamp(1.8rem,3.5vw,2.7rem);line-height:1.22;}
.cat-hero h1 .hl{
  background:linear-gradient(120deg,#7dd3fc,#38bdf8 45%,#818cf8);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{margin-top:20px;color:#cbd5e1;font-size:16.5px;line-height:1.7;max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 15px;border-radius:var(--radius-pill);
  font-size:13px;font-weight:500;color:#cbd5e1;
  background:rgba(15,30,60,.65);border:1px solid var(--line);
}
.chip i{color:var(--cyan);font-size:12px;}
/* ---------- Transaction panel ---------- */
.tx-panel{padding:24px 22px;border-color:var(--line-strong);box-shadow:var(--shadow),0 0 34px rgba(37,99,235,.22);}
.tx-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line);}
.tx-title{font-size:15px;font-weight:700;color:#e2e8f0;}
.tx-live{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:600;color:#86efac;text-transform:uppercase;letter-spacing:.05em;}
.tx-live i{font-size:8px;color:var(--ok);animation:pulseDot 1.6s infinite;}
@keyframes pulseDot{0%,100%{opacity:1;}50%{opacity:.25;}}
.tx-list{margin-top:8px;}
.tx-list li{display:flex;align-items:center;gap:12px;padding:13px 0;border-bottom:1px dashed rgba(56,189,248,.16);}
.tx-list li:last-child{border-bottom:0;}
.tx-icon{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  display:grid;place-items:center;font-size:14px;font-weight:800;color:#03101f;
}
.tx-icon.momo{background:linear-gradient(140deg,#f9a8d4,#db2777);}
.tx-icon.vietqr{background:linear-gradient(140deg,#7dd3fc,#2563eb);}
.tx-icon.zalo{background:linear-gradient(140deg,#93c5fd,#0ea5e9);}
.tx-icon.bank{background:linear-gradient(140deg,#a7f3d0,#059669);}
.tx-body{display:flex;flex-direction:column;line-height:1.35;min-width:0;}
.tx-body strong{font-size:14.5px;font-weight:700;color:#f1f5f9;}
.tx-body small{font-size:12.5px;color:var(--muted);}
.tx-state{margin-left:auto;font-size:12px;font-weight:700;padding:5px 11px;border-radius:var(--radius-pill);white-space:nowrap;}
.tx-state.ok{color:#bbf7d0;background:rgba(34,197,94,.16);box-shadow:inset 0 0 0 1px rgba(34,197,94,.4);}
.tx-state.wait{color:#fde68a;background:rgba(251,191,36,.14);box-shadow:inset 0 0 0 1px rgba(251,191,36,.38);}
.tx-stats{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px;padding-top:18px;border-top:1px solid var(--line);}
.tx-stats div{display:flex;flex-direction:column;gap:3px;}
.tx-stats strong{font-size:20px;font-weight:800;color:#7dd3fc;}
.tx-stats span{font-size:12.5px;color:var(--muted);line-height:1.4;}
/* ---------- Sections ---------- */
.section{padding:66px 0;position:relative;}
.section--soft{
  background:linear-gradient(180deg,rgba(8,18,41,.62),rgba(3,7,18,.1));
  border-top:1px solid rgba(56,189,248,.10);
  border-bottom:1px solid rgba(56,189,248,.10);
}
.section-head{max-width:780px;margin-bottom:34px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{content:'';width:26px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--cyan),transparent);}
.section-head h2{margin-top:12px;font-size:clamp(1.4rem,2.4vw,2rem);}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;}
/* ---------- Feature cards ---------- */
.feature{padding:26px 24px;height:100%;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;}
.feature:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:var(--shadow),var(--glow);}
.feature .f-ico{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  font-size:18px;color:#7dd3fc;background:rgba(37,99,235,.20);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.35);margin-bottom:16px;
}
.feature h3{font-size:17.5px;font-weight:700;}
.feature p{margin-top:10px;color:var(--muted);font-size:15px;}
/* ---------- Rate tables ---------- */
.panel-box{padding:24px 22px;height:100%;}
.panel-box h3{font-size:17px;font-weight:700;display:flex;align-items:center;gap:10px;}
.panel-box h3 i{color:var(--cyan);font-size:15px;}
.table-wrap{margin-top:16px;overflow-x:auto;}
.rate-table{width:100%;border-collapse:collapse;min-width:430px;}
.rate-table th,.rate-table td{padding:12px 12px;text-align:left;font-size:14px;border-bottom:1px solid rgba(56,189,248,.14);}
.rate-table th{font-size:12.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--dim);font-weight:700;}
.rate-table td{color:#cbd5e1;}
.rate-table td strong{color:#f1f5f9;font-weight:700;}
.rate-table tr:last-child td{border-bottom:0;}
.rate-table tbody tr:hover td{background:rgba(37,99,235,.10);}
.note-line{margin-top:16px;font-size:13.5px;color:var(--muted);display:flex;gap:9px;align-items:flex-start;}
.note-line i{color:var(--warn);margin-top:4px;}
/* ---------- Steps ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center;}
.split.rev{grid-template-columns:.95fr 1.05fr;}
.step-list{margin-top:8px;}
.step{display:flex;gap:18px;padding:18px 0;border-bottom:1px solid rgba(56,189,248,.12);}
.step:last-child{border-bottom:0;}
.step-no{
  width:42px;height:42px;flex-shrink:0;border-radius:13px;
  display:grid;place-items:center;font-weight:800;font-size:15px;color:#03101f;
  background:linear-gradient(140deg,#7dd3fc,#2563eb);
  box-shadow:0 0 18px rgba(56,189,248,.4);
}
.step h3{font-size:16.5px;font-weight:700;}
.step p{margin-top:7px;color:var(--muted);font-size:14.5px;}
.figure{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);position:relative;}
.figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.figure::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(3,7,18,.72));}
/* ---------- Checklist ---------- */
.check-list{margin-top:20px;display:grid;gap:12px;}
.check-list li{display:flex;gap:11px;align-items:flex-start;font-size:14.5px;color:#cbd5e1;}
.check-list i{color:var(--ok);margin-top:5px;font-size:14px;}
/* ---------- Channel cards ---------- */
.channel-card{overflow:hidden;height:100%;display:flex;flex-direction:column;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;}
.channel-card:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:var(--shadow),var(--glow);}
.channel-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.channel-body{padding:20px 20px 24px;display:flex;flex-direction:column;gap:10px;}
.channel-body h3{font-size:17px;font-weight:700;}
.channel-body p{color:var(--muted);font-size:14.5px;}
.channel-body .chip{align-self:flex-start;}
/* ---------- Info list ---------- */
.info-list{margin-top:6px;}
.info-item{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid rgba(56,189,248,.12);}
.info-item:last-child{border-bottom:0;}
.info-item .i-ico{
  width:40px;height:40px;flex-shrink:0;border-radius:12px;display:grid;place-items:center;
  font-size:16px;color:#fca5a5;background:rgba(239,68,68,.14);
  box-shadow:inset 0 0 0 1px rgba(248,113,113,.32);
}
.info-item h3{font-size:16.5px;font-weight:700;}
.info-item p{margin-top:8px;color:var(--muted);font-size:14.5px;}
/* ---------- FAQ ---------- */
.faq-list{margin-top:6px;display:grid;gap:12px;}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-sm);background:rgba(15,30,60,.42);overflow:hidden;transition:border-color .25s ease,background .25s ease;}
.faq-item[open]{border-color:var(--line-strong);background:rgba(15,30,60,.66);box-shadow:0 0 24px rgba(37,99,235,.18);}
.faq-item summary{
  cursor:pointer;list-style:none;padding:17px 20px;font-size:15.5px;font-weight:600;color:#e2e8f0;
  display:flex;align-items:center;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:'\f067';font-family:'Font Awesome 6 Free';font-weight:900;font-size:12px;
  color:var(--cyan);margin-left:auto;transition:transform .25s ease;flex-shrink:0;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item summary:hover{color:#fff;}
.faq-body{padding:0 20px 20px;color:var(--muted);font-size:14.5px;line-height:1.7;}
/* ---------- Posts ---------- */
.post-card{display:flex;flex-direction:column;gap:12px;padding:22px 20px;height:100%;color:var(--text);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;}
.post-card:hover{color:var(--text);transform:translateY(-5px);border-color:var(--line-strong);box-shadow:var(--shadow),var(--glow);}
.post-tag{
  align-self:flex-start;font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:#bae6fd;background:rgba(37,99,235,.20);padding:5px 12px;border-radius:var(--radius-pill);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.3);
}
.post-card h3{font-size:16.5px;font-weight:700;line-height:1.4;}
.post-card p{color:var(--muted);font-size:14.5px;}
.post-meta{margin-top:auto;font-size:12.5px;color:var(--dim);display:flex;align-items:center;gap:8px;}
.empty-note{color:var(--muted);font-size:15px;padding:22px;border:1px dashed var(--line-strong);border-radius:var(--radius-sm);background:rgba(15,30,60,.35);}
/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;padding:52px 44px;border-radius:var(--radius);
  background:linear-gradient(120deg,rgba(37,99,235,.34),rgba(8,18,41,.92) 58%,rgba(99,102,241,.28));
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow),0 0 44px rgba(37,99,235,.28);
  display:grid;grid-template-columns:1.3fr .7fr;gap:34px;align-items:center;
}
.cta-band h2{font-size:clamp(1.35rem,2.3vw,1.9rem);}
.cta-band p{margin-top:14px;color:#cbd5e1;font-size:15.5px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
/* ---------- Footer ---------- */
.site-footer{border-top:1px solid rgba(56,189,248,.14);background:rgba(3,7,18,.72);padding:54px 0 26px;margin-top:10px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}
.footer-brand p{margin-top:16px;color:var(--muted);font-size:14.5px;max-width:400px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.footer-col{display:flex;flex-direction:column;gap:10px;}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:#e2e8f0;margin-bottom:4px;}
.footer-col a,.footer-col span{color:var(--muted);font-size:14.5px;transition:color .22s ease;}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(56,189,248,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  color:var(--dim);font-size:13px;
}
/* ---------- FAB ---------- */
.fab{
  position:fixed;left:1rem;bottom:6rem;z-index:1050;
  min-width:56px;height:56px;padding:0 18px;border-radius:var(--radius-pill);
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  color:#e0f2fe;font-size:15px;font-weight:700;
  background:rgba(7,7,13,.80);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1.5px solid transparent;
  background-image:linear-gradient(rgba(7,7,13,.86),rgba(7,7,13,.86)),linear-gradient(120deg,#38bdf8,#6366f1);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 20px rgba(56,189,248,.45);
  opacity:.82;transition:opacity .25s ease,transform .25s ease,box-shadow .25s ease;
}
.fab i{font-size:18px;color:#7dd3fc;}
.fab:hover{opacity:1;color:#fff;transform:translateY(-3px);box-shadow:0 0 30px rgba(56,189,248,.75);}
.fab:hover i{animation:flick .6s ease-in-out infinite alternate;}
@keyframes flick{from{opacity:.6;}to{opacity:1;}}
.fab:active{transform:translateY(1px) scale(.97);}
.fab-dot{
  position:absolute;top:-4px;right:-4px;width:12px;height:12px;border-radius:50%;
  background:#f43f5e;box-shadow:0 0 10px rgba(244,63,94,.9);animation:pulseDot 1.4s infinite;
}
/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  .cat-hero-inner{gap:36px;}
  .cta-band{padding:44px 32px;}
}
@media (max-width:991.98px){
  .cat-hero{padding:48px 0 56px;}
  .cat-hero-inner{grid-template-columns:1fr;gap:36px;}
  .split,.split.rev{grid-template-columns:1fr;gap:30px;}
  .split.rev .figure{order:-1;}
  .cta-band{grid-template-columns:1fr;gap:24px;padding:38px 26px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section{padding:54px 0;}
  .header-actions{margin-left:auto;}
  .btn-login{padding:8px 13px;font-size:13px;}
  .btn-signup{padding:8px 15px;font-size:13px;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;}
  .section{padding:46px 0;}
  .section-head{margin-bottom:26px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .tx-stats{grid-template-columns:1fr;}
  .step{gap:14px;}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px;}
  .header-inner{gap:10px;min-height:66px;}
  .brand-mark{width:38px;height:38px;font-size:15px;}
  .brand-text strong{font-size:16.5px;}
  .brand-text small{display:none;}
  .btn-login{padding:7px 11px;font-size:12.5px;}
  .btn-signup{padding:7px 13px;font-size:12.5px;}
  .cat-hero h1{font-size:1.6rem;}
  .hero-lead{font-size:15px;}
  .panel-box,.feature,.post-card{padding:20px 17px;}
  .rate-table th,.rate-table td{padding:10px 9px;font-size:13px;}
  .faq-item summary{padding:15px 16px;font-size:14.5px;}
  .fab{height:52px;min-width:52px;padding:0 15px;font-size:13.5px;}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}