/* roulang page: index */
:root{
  --bg:#0F0C20;
  --bg-2:#0B1A30;
  --bg-3:#141033;
  --panel:rgba(255,255,255,.045);
  --panel-2:rgba(255,255,255,.075);
  --line:rgba(255,255,255,.12);
  --line-soft:rgba(255,255,255,.07);
  --lime:#CCFF00;
  --cyan:#00F0FF;
  --pink:#FF3D9A;
  --txt:#FFFFFF;
  --muted:#A6ACAF;
  --muted-2:#7F878C;
  --r-sm:10px;
  --r:16px;
  --r-lg:26px;
  --sh:0 18px 46px rgba(0,0,0,.45);
  --sh-lime:0 0 22px rgba(204,255,0,.28);
  --sh-cyan:0 0 20px rgba(0,240,255,.32);
  --sp:clamp(56px,7vw,104px);
  --ff:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--ff);background:var(--bg);color:var(--txt);
  line-height:1.62;font-size:16px;overflow-x:hidden;
  background-image:radial-gradient(900px 520px at 88% -8%,rgba(0,240,255,.14),transparent 62%),radial-gradient(760px 500px at 4% 6%,rgba(204,255,0,.09),transparent 60%),linear-gradient(180deg,#0F0C20 0%,#0B1A30 58%,#0A0A1C 100%);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.2;letter-spacing:-.01em;font-weight:800}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1220px;margin:0 auto;padding:0 20px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan)}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--cyan),var(--lime));border-radius:2px}
.sec-title{font-size:clamp(25px,3.1vw,40px)}
.sec-lead{color:var(--muted);max-width:64ch;margin-top:14px;font-size:16.5px}
section{position:relative}

/* ---------- header ---------- */
.site-header{position:fixed;inset:0 0 auto 0;z-index:70;background:rgba(10,9,26,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line-soft)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:linear-gradient(90deg,transparent,var(--lime),var(--cyan),transparent);opacity:.75}
.nav{display:flex;align-items:center;gap:18px;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:15.5px;letter-spacing:-.02em;flex:0 0 auto}
.logo-mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(140deg,rgba(204,255,0,.2),rgba(0,240,255,.22));border:1px solid rgba(204,255,0,.45);box-shadow:var(--sh-lime);font-size:17px}
.logo-txt small{display:block;font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:14px;flex:1 1 auto;min-width:0}
.nav-links a{position:relative;padding:9px 14px;border-radius:999px;font-size:14.5px;font-weight:600;color:#D8DEE2;white-space:nowrap;transition:color .2s,background .2s,box-shadow .2s}
.nav-links a:hover{color:#fff;background:var(--panel-2)}
.nav-links a.active{color:#0B0B14;background:linear-gradient(120deg,var(--lime),#9EF01A);box-shadow:var(--sh-lime)}
.nav-links a:not(.active)::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;background:var(--cyan);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.nav-links a:not(.active):hover::after{transform:scaleX(1)}
.nav-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.btn-ghost{padding:9px 14px;font-size:14px;font-weight:600;color:#CFD6DA;border-radius:999px;transition:color .2s,background .2s}
.btn-ghost:hover{color:#fff;background:var(--panel-2)}
.btn-solid{padding:10px 20px;font-size:14px;font-weight:800;border-radius:999px;color:#08131A;background:linear-gradient(120deg,var(--cyan),#4DFFB8);box-shadow:var(--sh-cyan);transition:transform .2s,box-shadow .2s}
.btn-solid:hover{transform:translateY(-2px);box-shadow:0 0 28px rgba(0,240,255,.55)}
.btn-solid:active{transform:translateY(0) scale(.97)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border:0;cursor:pointer;font-weight:800;border-radius:999px;padding:15px 27px;font-size:15px;transition:transform .2s,box-shadow .2s,background .2s,color .2s}
.btn-lime{color:#0C1000;background:linear-gradient(120deg,var(--lime),#A6F202);box-shadow:0 12px 30px rgba(204,255,0,.24)}
.btn-lime:hover{transform:translateY(-3px);box-shadow:0 16px 38px rgba(204,255,0,.4)}
.btn-cyan{color:#04141C;background:linear-gradient(120deg,var(--cyan),#57F2C4);box-shadow:0 12px 30px rgba(0,240,255,.24)}
.btn-cyan:hover{transform:translateY(-3px);box-shadow:0 16px 38px rgba(0,240,255,.42)}
.btn-line{color:#fff;background:transparent;border:1px solid var(--line);backdrop-filter:blur(6px)}
.btn-line:hover{border-color:var(--cyan);background:rgba(0,240,255,.09);transform:translateY(-2px)}
.btn:active{transform:translateY(0) scale(.98)}
.tag{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:999px;font-size:11.5px;font-weight:700;letter-spacing:.05em;text-transform:uppercase}
.tag-lime{background:rgba(204,255,0,.14);color:var(--lime);border:1px solid rgba(204,255,0,.35)}
.tag-cyan{background:rgba(0,240,255,.13);color:var(--cyan);border:1px solid rgba(0,240,255,.32)}
.tag-pink{background:rgba(255,61,154,.14);color:#FF7EBB;border:1px solid rgba(255,61,154,.34)}

/* ---------- hero flash bar ---------- */
.hero{padding:108px 0 var(--sp);position:relative;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.jpg');background-size:cover;background-position:center;opacity:.3;filter:saturate(.85)}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,9,26,.9),rgba(11,26,48,.82) 45%,var(--bg) 100%)}
.hero-inner{position:relative;z-index:2}
.flash-bar{display:flex;flex-wrap:wrap;align-items:center;gap:18px;padding:16px 22px;border-radius:var(--r);border:1px solid rgba(255,61,154,.34);background:linear-gradient(100deg,rgba(255,61,154,.16),rgba(15,12,32,.7));box-shadow:0 0 26px rgba(255,61,154,.16)}
.flash-bar .flash-label{font-size:13px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:#FF7EBB}
.flash-bar p{font-size:14.5px;color:#E4E9EC;flex:1 1 260px;min-width:220px}
.countdown{display:flex;gap:8px;margin-left:auto}
.cd-unit{min-width:58px;text-align:center;padding:7px 8px;border-radius:12px;background:rgba(0,0,0,.42);border:1px solid rgba(255,255,255,.12)}
.cd-unit b{display:block;font-size:20px;font-weight:800;color:var(--lime);letter-spacing:.02em}
.cd-unit span{font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-2)}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:44px;align-items:center;margin-top:40px}
.hero h1{font-size:clamp(30px,4.5vw,52px);margin-top:18px;letter-spacing:-.025em}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--lime),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{margin-top:20px;font-size:17px;color:#D2D9DD;max-width:58ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-facts{display:flex;flex-wrap:wrap;gap:14px 34px;margin-top:32px;padding-top:26px;border-top:1px solid var(--line-soft)}
.hero-facts div b{display:block;font-size:24px;font-weight:800;color:var(--cyan)}
.hero-facts div span{font-size:13px;color:var(--muted)}
.pick-card{border-radius:var(--r-lg);overflow:hidden;border:1px solid rgba(0,240,255,.28);background:rgba(12,10,28,.78);box-shadow:0 26px 60px rgba(0,0,0,.5),0 0 24px rgba(0,240,255,.14)}
.pick-card figure{margin:0;position:relative}
.pick-card figure img{height:222px;object-fit:cover;width:100%}
.pick-card figure figcaption{position:absolute;left:16px;top:16px;display:flex;gap:8px}
.pick-body{padding:22px 22px 24px}
.pick-body h2{font-size:19px}
.pick-body>p{margin-top:10px;font-size:14.5px;color:var(--muted)}
.pick-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:20px 0}
.pick-meta li{padding:11px 12px;border-radius:12px;background:var(--panel);border:1px solid var(--line-soft)}
.pick-meta strong{display:block;font-size:14px;color:var(--lime)}
.pick-meta span{font-size:11.5px;color:var(--muted-2)}
.price-row{display:flex;align-items:baseline;gap:12px;margin-bottom:16px}
.price-now{font-size:26px;font-weight:800;color:var(--lime)}
.price-old{font-size:15px;color:var(--muted-2);text-decoration:line-through}
.pick-card .btn{width:100%}

/* ---------- kpi board ---------- */
.kpi-sec{padding:var(--sp) 0}
.kpi-head{display:flex;flex-wrap:wrap;gap:24px;align-items:flex-end;justify-content:space-between}
.kpi-board{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:38px;background:var(--line-soft);border:1px solid var(--line-soft);border-radius:var(--r);overflow:hidden}
.kpi-cell{padding:26px 22px;background:rgba(12,11,30,.86)}
.kpi-cell b{display:block;font-size:clamp(26px,3.4vw,38px);font-weight:800;background:linear-gradient(100deg,var(--lime),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.kpi-cell h3{font-size:14.5px;margin-top:8px;font-weight:700}
.kpi-cell p{font-size:13.5px;color:var(--muted);margin-top:7px}
.kpi-bar{height:5px;border-radius:4px;background:rgba(255,255,255,.09);margin-top:16px;overflow:hidden}
.kpi-bar i{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,var(--cyan),var(--lime))}

/* ---------- intro split ---------- */
.intro{padding:0 0 var(--sp)}
.intro-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:48px;align-items:start}
.intro-copy p+p{margin-top:14px;color:var(--muted)}
.intro-list{margin-top:26px;display:grid;gap:14px}
.intro-list li{display:flex;gap:14px;align-items:flex-start;padding-bottom:14px;border-bottom:1px dashed var(--line-soft)}
.intro-list li:last-child{border-bottom:0;padding-bottom:0}
.intro-list i{flex:0 0 auto;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;font-style:normal;font-size:14px;font-weight:800;color:var(--lime);background:rgba(204,255,0,.12);border:1px solid rgba(204,255,0,.3)}
.intro-list strong{display:block;font-size:15px}
.intro-list span{font-size:14px;color:var(--muted)}
.intro-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh)}
.intro-visual img{height:100%;min-height:320px;object-fit:cover}
.intro-visual .float-note{position:absolute;left:18px;right:18px;bottom:18px;padding:16px 18px;border-radius:14px;background:rgba(8,8,20,.82);backdrop-filter:blur(8px);border:1px solid rgba(0,240,255,.25)}
.intro-visual .float-note strong{color:var(--cyan);font-size:14px}
.intro-visual .float-note p{font-size:13.5px;color:#CFD6DA;margin-top:6px}

/* ---------- app matrix ---------- */
.matrix{padding:var(--sp) 0;background:linear-gradient(180deg,rgba(255,255,255,.02),transparent)}
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tabs span{padding:9px 16px;border-radius:999px;font-size:13.5px;font-weight:600;border:1px solid var(--line);color:#D5DBDE;cursor:default;transition:border-color .2s,background .2s,color .2s}
.tabs span:hover{border-color:var(--lime);color:var(--lime);background:rgba(204,255,0,.08)}
.tabs span.on{background:rgba(0,240,255,.14);border-color:rgba(0,240,255,.4);color:var(--cyan)}
.app-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:32px}
.app-card{border-radius:var(--r);overflow:hidden;border:1px solid var(--line-soft);background:rgba(13,12,32,.72);transition:transform .28s,box-shadow .28s,border-color .28s}
.app-card:hover{transform:translateY(-7px);border-color:rgba(0,240,255,.42);box-shadow:0 22px 44px rgba(0,0,0,.5),0 0 20px rgba(0,240,255,.2)}
.app-card .thumb{position:relative}
.app-card .thumb img{height:146px;width:100%;object-fit:cover}
.app-card .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(11,10,26,.92))}
.app-card .thumb .tag{position:absolute;top:12px;left:12px;z-index:2}
.app-card .os{position:absolute;bottom:10px;left:12px;z-index:2;font-size:11.5px;font-weight:700;letter-spacing:.06em;color:#C9D2D6}
.app-body{padding:16px 17px 18px}
.app-body h3{font-size:16px}
.app-body p{font-size:13.5px;color:var(--muted);margin-top:8px}
.app-foot{display:flex;align-items:center;justify-content:space-between;margin-top:15px;padding-top:13px;border-top:1px solid var(--line-soft);font-size:12.5px;color:var(--muted-2)}
.app-foot b{color:var(--lime);font-size:13.5px}

/* ---------- compare ---------- */
.compare{padding:var(--sp) 0}
.cmp-wrap{display:grid;grid-template-columns:1fr 1.35fr;gap:44px;align-items:center;margin-top:36px}
.cmp-table{width:100%;border-collapse:separate;border-spacing:0;border:1px solid var(--line-soft);border-radius:var(--r);overflow:hidden;font-size:14.5px}
.cmp-table th,.cmp-table td{padding:15px 16px;text-align:left;border-bottom:1px solid var(--line-soft)}
.cmp-table thead th{background:rgba(0,240,255,.08);font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:#D8DEE2}
.cmp-table thead th:last-child{color:var(--lime)}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody tr:hover td{background:rgba(255,255,255,.03)}
.cmp-table td:first-child{font-weight:600}
.cmp-table td.no{color:var(--muted-2)}
.cmp-table td.yes{color:var(--lime);font-weight:600}
.cmp-note{padding:22px;border-left:2px solid var(--lime);background:rgba(204,255,0,.06);border-radius:0 var(--r) var(--r) 0}
.cmp-note p{font-size:14.5px;color:#D9DFE2;margin-top:10px}

/* ---------- steps ---------- */
.steps{padding:var(--sp) 0;background:radial-gradient(700px 380px at 82% 18%,rgba(255,61,154,.1),transparent 60%)}
.step-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:38px;counter-reset:s}
.step{position:relative;padding:24px 20px;border-radius:var(--r);background:rgba(12,11,30,.7);border:1px solid var(--line-soft)}
.step::before{counter-increment:s;content:"0" counter(s);position:absolute;top:-14px;left:20px;font-size:13px;font-weight:800;padding:5px 10px;border-radius:8px;color:#0C1000;background:linear-gradient(120deg,var(--lime),#A9F303)}
.step h3{font-size:16px;margin-top:12px}
.step p{font-size:14px;color:var(--muted);margin-top:9px}
.step ul{margin-top:12px;display:grid;gap:6px}
.step ul li{font-size:13px;color:#C7CFD3;padding-left:15px;position:relative}
.step ul li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--cyan)}

/* ---------- benefits split ---------- */
.benefit{padding:var(--sp) 0}
.benefit-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:46px;align-items:center}
.benefit-list{display:grid;gap:18px;margin-top:28px}
.benefit-list li{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start}
.benefit-list em{font-style:normal;width:42px;height:42px;border-radius:13px;display:grid;place-items:center;font-size:17px;background:rgba(0,240,255,.1);border:1px solid rgba(0,240,255,.28);box-shadow:0 0 14px rgba(0,240,255,.14)}
.benefit-list h3{font-size:16.5px}
.benefit-list p{font-size:14.5px;color:var(--muted);margin-top:6px}
.reward-panel{padding:26px;border-radius:var(--r-lg);border:1px solid rgba(204,255,0,.26);background:linear-gradient(160deg,rgba(204,255,0,.09),rgba(12,10,28,.85))}
.reward-panel h3{font-size:18px}
.reward-panel>p{font-size:14px;color:var(--muted);margin-top:10px}
.reward-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px dashed var(--line-soft);font-size:14px}
.reward-row:last-of-type{border-bottom:0}
.reward-row span{color:#D5DBDE}
.reward-row b{color:var(--lime);white-space:nowrap}
.progress{margin-top:18px}
.progress .label{display:flex;justify-content:space-between;font-size:12.5px;color:var(--muted-2);margin-bottom:7px}
.progress .track{height:8px;border-radius:6px;background:rgba(255,255,255,.09);overflow:hidden}
.progress .track i{display:block;height:100%;background:linear-gradient(90deg,var(--lime),var(--cyan));border-radius:6px}

/* ---------- changelog + milestone ---------- */
.release{padding:var(--sp) 0;background:linear-gradient(180deg,transparent,rgba(255,255,255,.025))}
.release-grid{display:grid;grid-template-columns:1fr 1fr;gap:46px;margin-top:36px}
.log{display:grid;gap:0}
.log-item{display:grid;grid-template-columns:96px 1fr;gap:18px;padding:18px 0;border-top:1px solid var(--line-soft)}
.log-item:first-child{border-top:0}
.log-ver{font-size:13.5px;font-weight:800;color:var(--cyan)}
.log-ver span{display:block;font-size:12px;color:var(--muted-2);font-weight:600;margin-top:3px}
.log-body h3{font-size:15.5px}
.log-body p{font-size:14px;color:var(--muted);margin-top:7px}
.timeline{position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--lime),var(--cyan),transparent)}
.timeline li{position:relative;padding-bottom:24px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{content:"";position:absolute;left:-26px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--bg);border:2px solid var(--lime);box-shadow:0 0 12px rgba(204,255,0,.45)}
.timeline b{font-size:15px}
.timeline p{font-size:14px;color:var(--muted);margin-top:6px}

/* ---------- social proof ---------- */
.proof{padding:var(--sp) 0}
.proof-top{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:end}
.stars{display:flex;gap:5px;color:var(--lime);font-size:17px;letter-spacing:2px}
.proof-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:34px}
.quote{padding:24px;border-radius:var(--r);background:rgba(12,11,30,.7);border:1px solid var(--line-soft);transition:border-color .25s,transform .25s}
.quote:hover{border-color:rgba(204,255,0,.36);transform:translateY(-5px)}
.quote p{font-size:14.5px;color:#D6DCDF}
.quote footer{display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:15px;border-top:1px solid var(--line-soft)}
.avatar{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:14px;color:#0C1000;background:linear-gradient(120deg,var(--cyan),var(--lime))}
.quote footer b{font-size:14px;display:block}
.quote footer span{font-size:12.5px;color:var(--muted-2)}
.badge-strip{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;padding:18px 20px;border-radius:var(--r);border:1px dashed var(--line);background:var(--panel)}
.badge-strip div{display:flex;align-items:center;gap:9px;font-size:13.5px;color:#CCD3D7;padding-right:12px}
.badge-strip div i{font-style:normal;color:var(--cyan)}

/* ---------- news ---------- */
.news{padding:var(--sp) 0;background:linear-gradient(180deg,rgba(0,240,255,.05),transparent 60%)}
.news-grid{display:grid;grid-template-columns:1.5fr .9fr;gap:44px;margin-top:34px}
.news-list li{border-bottom:1px solid var(--line-soft)}
.news-list li:first-child{border-top:1px solid var(--line-soft)}
.news-item{display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center;padding:18px 4px;transition:background .22s,padding-left .22s}
.news-item:hover{background:rgba(255,255,255,.035);padding-left:14px}
.news-item h3{font-size:16px;font-weight:600;line-height:1.45}
.news-item:hover h3{color:var(--lime)}
.news-item p{font-size:13.5px;color:var(--muted);margin-top:7px;max-width:70ch}
.news-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:10px;font-size:12.5px;color:var(--muted-2)}
.news-meta .tag{text-transform:none;letter-spacing:0}
.news-arrow{font-size:19px;color:var(--muted-2);transition:color .22s,transform .22s}
.news-item:hover .news-arrow{color:var(--cyan);transform:translateX(5px)}
.news-empty{padding:34px 20px;border:1px dashed var(--line);border-radius:var(--r);text-align:left;color:var(--muted);font-size:15px;background:var(--panel)}
.news-side{display:grid;gap:20px;align-content:start}
.side-box{padding:22px;border-radius:var(--r);border:1px solid var(--line-soft);background:rgba(12,11,30,.72)}
.side-box h3{font-size:16px}
.side-box p{font-size:13.5px;color:var(--muted);margin-top:9px}
.side-links{margin-top:14px;display:grid;gap:11px}
.side-links a{display:flex;justify-content:space-between;gap:12px;font-size:14px;color:#D5DBDE;padding-bottom:11px;border-bottom:1px dashed var(--line-soft);transition:color .2s}
.side-links a:last-child{border-bottom:0;padding-bottom:0}
.side-links a:hover{color:var(--cyan)}
.side-links a span{color:var(--muted-2);font-size:12.5px;white-space:nowrap}
.side-figure{border-radius:var(--r);overflow:hidden;border:1px solid var(--line-soft)}
.side-figure img{height:170px;width:100%;object-fit:cover}

/* ---------- faq ---------- */
.faq{padding:var(--sp) 0}
.faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:46px;align-items:start}
.faq-list{display:grid;gap:12px}
details{border:1px solid var(--line-soft);border-radius:var(--r);background:rgba(12,11,30,.68);overflow:hidden;transition:border-color .25s}
details[open]{border-color:rgba(204,255,0,.32);background:rgba(204,255,0,.045)}
summary{cursor:pointer;list-style:none;padding:18px 52px 18px 20px;font-size:15.5px;font-weight:600;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:21px;font-weight:700;color:var(--lime);line-height:1}
details[open] summary::after{content:"–"}
summary:hover{color:var(--lime)}
details p{padding:0 20px 20px;font-size:14.5px;color:var(--muted)}

/* ---------- cta form ---------- */
.cta{padding:var(--sp) 0}
.cta-box{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid rgba(0,240,255,.28);box-shadow:0 26px 66px rgba(0,0,0,.5)}
.cta-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.jpg');background-size:cover;background-position:center;opacity:.34}
.cta-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,rgba(9,9,22,.94),rgba(11,26,48,.8))}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr .92fr;gap:44px;padding:clamp(28px,4vw,52px)}
.cta-inner h2{font-size:clamp(24px,3vw,36px);margin-top:16px}
.cta-inner>div>p{font-size:16px;color:#D5DBDE;margin-top:16px;max-width:52ch}
.cta-points{display:grid;gap:10px;margin-top:24px}
.cta-points li{font-size:14.5px;color:#CCD3D7;padding-left:24px;position:relative}
.cta-points li::before{content:"✓";position:absolute;left:0;color:var(--lime);font-weight:800}
form{padding:26px;border-radius:var(--r);background:rgba(8,8,20,.78);border:1px solid var(--line);backdrop-filter:blur(8px)}
form h3{font-size:17px}
form>p{font-size:13.5px;color:var(--muted);margin-top:8px}
.field{margin-top:16px}
.field label{display:block;font-size:12.5px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;padding:13px 15px;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid var(--line);font-size:14.5px;transition:border-color .2s,background .2s,box-shadow .2s}
.field textarea{min-height:92px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#6E767B}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--cyan);background:rgba(0,240,255,.06);box-shadow:0 0 0 3px rgba(0,240,255,.14)}
.field select option{background:#0F0C20;color:#fff}
form .btn{width:100%;margin-top:20px}
.form-note{font-size:12.5px;color:var(--muted-2);margin-top:13px}

/* ---------- fab ---------- */
.fab{position:fixed;left:18px;bottom:88px;z-index:80;display:inline-flex;align-items:center;gap:10px;min-height:52px;padding:12px 20px;border-radius:999px;font-size:14px;font-weight:800;color:#fff;background:rgba(6,6,16,.6);backdrop-filter:blur(10px);border:1px solid transparent;background-image:linear-gradient(rgba(6,6,16,.72),rgba(6,6,16,.72)),linear-gradient(120deg,var(--lime),var(--cyan));background-origin:border-box;background-clip:padding-box,border-box;box-shadow:0 0 15px rgba(0,240,255,.42);opacity:.72;animation:fabBreath 3.4s ease-in-out infinite;transition:opacity .25s,transform .25s,box-shadow .25s}
.fab i{font-style:normal;font-size:17px}
.fab:hover{opacity:1;transform:translateY(-3px) scale(1.05);box-shadow:0 0 30px rgba(204,255,0,.55)}
.fab:active{transform:scale(.96);box-shadow:0 0 24px rgba(255,61,154,.6)}
.fab b{position:absolute;top:-6px;right:-6px;width:11px;height:11px;border-radius:50%;background:var(--pink);box-shadow:0 0 10px rgba(255,61,154,.9);animation:dotBlink 1.5s infinite}
@keyframes fabBreath{0%,100%{opacity:.7}50%{opacity:.95}}
@keyframes dotBlink{0%,100%{opacity:1}50%{opacity:.25}}
.sticky-cta{position:fixed;left:0;right:0;bottom:0;z-index:75;display:flex;align-items:center;gap:16px;padding:11px 20px;background:rgba(8,8,20,.92);backdrop-filter:blur(12px);border-top:1px solid rgba(204,255,0,.28)}
.sticky-cta p{font-size:13.5px;color:#D3DADD;flex:1 1 auto}
.sticky-cta p b{color:var(--lime)}
.sticky-cta .btn{padding:11px 22px;font-size:14px}

/* ---------- footer ---------- */
.site-footer{padding:var(--sp) 0 108px;border-top:1px solid var(--line-soft);background:linear-gradient(180deg,rgba(255,255,255,.02),transparent)}
.foot-grid{display:grid;grid-template-columns:1.35fr .8fr .8fr 1fr;gap:38px}
.foot-brand p{font-size:14px;color:var(--muted);margin-top:16px;max-width:42ch}
.foot-col h3{font-size:14px;letter-spacing:.06em;text-transform:uppercase;color:#fff;margin-bottom:16px}
.foot-col a,.foot-col li{display:block;font-size:14px;color:var(--muted);padding:6px 0;transition:color .2s,transform .2s}
.foot-col a:hover{color:var(--lime);transform:translateX(4px)}
.pay-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.pay-badges span{padding:6px 11px;border-radius:8px;font-size:12px;font-weight:700;color:#CBD3D7;background:var(--panel);border:1px solid var(--line-soft)}
.foot-bottom{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;margin-top:44px;padding-top:24px;border-top:1px solid var(--line-soft);font-size:13px;color:var(--muted-2)}
.foot-bottom a{color:var(--cyan)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero-grid,.intro-grid,.cmp-wrap,.benefit-grid,.release-grid,.news-grid,.faq-grid,.cta-inner{grid-template-columns:1fr;gap:34px}
  .kpi-board,.app-grid,.step-flow{grid-template-columns:repeat(2,1fr)}
  .proof-grid{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
  .nav-links{overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .nav-links::-webkit-scrollbar{display:none}
  .intro-visual img{min-height:250px}
}
@media (max-width:768px){
  .nav{height:66px;gap:10px}
  .logo-txt small{display:none}
  .nav-links{margin-left:6px;order:3;flex:1 0 100%;padding:0 0 10px}
  .nav{flex-wrap:wrap;height:auto;padding-top:12px}
  .site-header{position:sticky}
  .hero{padding:34px 0 var(--sp)}
  .countdown{margin-left:0}
  .proof-grid{grid-template-columns:1fr}
  .proof-top{grid-template-columns:1fr;align-items:start}
  .log-item{grid-template-columns:1fr;gap:8px}
  .pick-meta{grid-template-columns:repeat(3,1fr)}
  .news-item{grid-template-columns:1fr}
  .news-arrow{display:none}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .container{padding:0 15px}
  .kpi-board,.app-grid,.step-flow{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .hero-facts{gap:14px 22px}
  .hero-actions .btn{width:100%}
  .cd-unit{min-width:52px}
  .fab{left:12px;bottom:80px;padding:11px 16px}
  .fab span{display:none}
  .sticky-cta{gap:10px;padding:10px 14px}
  .sticky-cta p{font-size:12.5px}
  .flash-bar{padding:14px 16px}
  .cmp-table th,.cmp-table td{padding:12px 11px;font-size:13.5px}
}

/* roulang page: article */
:root{
  --bg:#0F0C20;
  --bg-2:#0B1A30;
  --bg-3:#151137;
  --panel:rgba(255,255,255,.045);
  --panel-2:rgba(255,255,255,.075);
  --line:rgba(204,255,0,.16);
  --line-soft:rgba(255,255,255,.1);
  --lime:#CCFF00;
  --cyan:#00F0FF;
  --txt:#FFFFFF;
  --muted:#A6ACAF;
  --muted-2:#7C848A;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --sh-1:0 10px 30px rgba(0,0,0,.4);
  --sh-glow:0 0 22px rgba(0,240,255,.28);
  --sp:clamp(56px,7vw,104px);
  --ff:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--ff);color:var(--txt);line-height:1.62;
  background:
    radial-gradient(1100px 620px at 82% -8%,rgba(0,240,255,.14),transparent 62%),
    radial-gradient(900px 540px at 6% 12%,rgba(204,255,0,.09),transparent 60%),
    linear-gradient(180deg,var(--bg) 0%,var(--bg-2) 58%,#080614 100%);
  background-attachment:fixed;
  font-size:16px;letter-spacing:.1px;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--cyan);text-decoration:none;transition:color .22s ease,opacity .22s ease}
a:hover{color:var(--lime)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--lime);outline-offset:3px;border-radius:6px
}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.22;font-weight:800;letter-spacing:-.4px}
p{margin:0}
ul,ol{margin:0;padding:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 22px}

/* ============ HEADER / NAV ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(10,8,24,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
  box-shadow:0 1px 0 rgba(204,255,0,.14),0 12px 34px rgba(0,0,0,.42);
}
.nav{display:flex;align-items:center;gap:18px;min-height:76px}
.logo{display:flex;align-items:center;gap:11px;color:var(--txt);flex:0 0 auto}
.logo:hover{color:var(--txt)}
.logo-mark{
  width:42px;height:42px;display:grid;place-items:center;flex:0 0 auto;
  border-radius:13px;font-size:19px;color:#0B1A30;font-weight:800;
  background:linear-gradient(135deg,var(--lime),var(--cyan));
  box-shadow:0 0 18px rgba(204,255,0,.4);
}
.logo-txt{display:flex;flex-direction:column;font-weight:800;font-size:15.5px;line-height:1.2;max-width:250px}
.logo-txt small{font-weight:500;font-size:11.5px;color:var(--muted);letter-spacing:.2px;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap;overflow:auto;scrollbar-width:none}
.nav-links::-webkit-scrollbar{display:none}
.nav-links a{
  position:relative;color:#D6DBDF;font-size:13.6px;font-weight:600;white-space:nowrap;
  padding:10px 12px;border-radius:9px;border:1px solid transparent;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:5px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--lime),var(--cyan));transform:scaleX(0);transform-origin:left;
  transition:transform .26s ease;
}
.nav-links a:hover{color:#fff;background:var(--panel);border-color:var(--line-soft)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:#fff;background:rgba(204,255,0,.08);border-color:var(--line);text-shadow:0 0 12px rgba(204,255,0,.5)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{display:flex;align-items:center;gap:9px;flex:0 0 auto}
.btn-ghost{
  padding:10px 14px;font-size:13.4px;font-weight:600;color:#E7ECEF;border-radius:10px;
  border:1px solid var(--line-soft);white-space:nowrap;
}
.btn-ghost:hover{color:#0B1A30;background:#E9F5C8;border-color:transparent}
.btn-solid{
  padding:11px 18px;font-size:13.6px;font-weight:800;color:#0B1A30;border-radius:11px;white-space:nowrap;
  background:linear-gradient(120deg,var(--lime),#8CF2C0 55%,var(--cyan));
  box-shadow:0 8px 22px rgba(0,240,255,.26);
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-solid:hover{color:#08121f;transform:translateY(-2px);box-shadow:0 12px 28px rgba(204,255,0,.34);filter:saturate(1.1)}
.btn-solid:active{transform:translateY(0) scale(.98)}

/* ============ ARTICLE HERO ============ */
.page-top{padding:132px 0 var(--sp);position:relative;overflow:hidden}
.page-top::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background:url("/assets/images/backpic/back-2.jpg") center/cover no-repeat;
  opacity:.3;
}
.page-top::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(15,12,32,.9),rgba(11,26,48,.94) 60%,rgba(8,6,20,.98));
}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:12.6px;color:var(--muted-2);margin-bottom:22px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--lime)}
.crumb span{color:#E7ECEF}
.doc-head{display:grid;grid-template-columns:minmax(0,1.32fr) minmax(0,.9fr);gap:clamp(28px,4vw,60px);align-items:start}
.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;
  font-size:11.6px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;
  background:rgba(204,255,0,.1);border:1px solid var(--line);color:#E4FF9C;
}
.badge.cy{background:rgba(0,240,255,.09);border-color:rgba(0,240,255,.24);color:#B6F6FF}
.doc-head h1{font-size:clamp(28px,4.1vw,46px);margin-bottom:16px;text-wrap:balance}
.doc-lede{color:#C7CDD2;font-size:clamp(15px,1.35vw,17.4px);max-width:62ch}
.doc-meta{display:flex;gap:26px;flex-wrap:wrap;margin-top:26px;padding-top:22px;border-top:1px solid var(--line-soft)}
.doc-meta div{display:flex;flex-direction:column;gap:3px}
.doc-meta dt,.doc-meta b{font-size:11.4px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--muted-2)}
.doc-meta span{font-size:14.6px;font-weight:600;color:#EDF1F3}
.cover-panel{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-soft);box-shadow:var(--sh-1)}
.cover-panel img{aspect-ratio:4/3;object-fit:cover;transition:transform .5s ease}
.cover-panel:hover img{transform:scale(1.04)}
.cover-panel figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:44px 18px 15px;font-size:12.8px;color:#DDE3E6;
  background:linear-gradient(180deg,transparent,rgba(8,6,20,.93));
}
.summary-box{margin-top:16px;padding:20px;border-radius:var(--r-md);background:var(--panel);border:1px solid var(--line-soft)}
.summary-box h3{font-size:13px;letter-spacing:1px;text-transform:uppercase;color:#E4FF9C;margin-bottom:12px}
.summary-box ol{list-style:none;counter-reset:s;display:grid;gap:10px}
.summary-box li{counter-increment:s;display:flex;gap:11px;font-size:14px;color:#C7CDD2;line-height:1.5}
.summary-box li::before{
  content:counter(s,decimal-leading-zero);flex:0 0 auto;font-size:11.5px;font-weight:800;color:var(--cyan);
  padding-top:2px;
}

/* ============ SECTIONS ============ */
section{position:relative}
.sec{padding:var(--sp) 0}
.sec-alt{background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,0))}
.sec-kicker{font-size:11.6px;font-weight:800;letter-spacing:1.6px;text-transform:uppercase;color:var(--cyan);margin-bottom:12px;display:block}
.sec-title{font-size:clamp(23px,3vw,34px);max-width:24ch}
.sec-sub{margin-top:14px;color:var(--muted);max-width:64ch;font-size:15.4px}
.sec-head{margin-bottom:38px}
.sec-head.split{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:34px;align-items:end}

/* ============ METRICS ============ */
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line-soft);border:1px solid var(--line-soft);border-radius:var(--r-md);overflow:hidden}
.metric{padding:26px 22px;background:rgba(10,8,24,.62);transition:background .25s ease}
.metric:hover{background:rgba(204,255,0,.06)}
.metric strong{display:block;font-size:clamp(26px,3.4vw,38px);font-weight:800;background:linear-gradient(120deg,var(--lime),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.1}
.metric small{display:block;margin-top:9px;font-size:13.2px;color:var(--muted);line-height:1.5}
.pulse{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--lime);margin-right:7px;vertical-align:middle;box-shadow:0 0 0 0 rgba(204,255,0,.55);animation:pl 2.2s infinite}
@keyframes pl{70%{box-shadow:0 0 0 11px rgba(204,255,0,0)}100%{box-shadow:0 0 0 0 rgba(204,255,0,0)}}

/* ============ CONTENT BODY ============ */
.body-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:clamp(30px,4vw,58px);align-items:start}
.prose{font-size:16.6px;color:#D5DADE;max-width:74ch}
.prose>*+*{margin-top:20px}
.prose h2{font-size:clamp(21px,2.4vw,28px);color:#fff;margin-top:44px;padding-left:15px;border-left:3px solid var(--lime)}
.prose h3{font-size:clamp(18px,2vw,21.5px);color:#F2F5F6;margin-top:32px}
.prose h4{font-size:17px;color:#EDF1F3;margin-top:26px}
.prose p{line-height:1.72}
.prose a{border-bottom:1px solid rgba(0,240,255,.35)}
.prose strong{color:#fff}
.prose ul,.prose ol{padding-left:22px;display:grid;gap:10px}
.prose ul li{list-style:none;position:relative;padding-left:6px}
.prose ul li::before{content:"";position:absolute;left:-16px;top:11px;width:7px;height:7px;border-radius:2px;background:linear-gradient(135deg,var(--lime),var(--cyan))}
.prose ol li{list-style:decimal;color:#D5DADE}
.prose ol li::marker{color:var(--cyan);font-weight:700}
.prose blockquote{
  margin:26px 0;padding:20px 22px;border-radius:var(--r-md);color:#E7ECEF;
  background:rgba(0,240,255,.06);border:1px solid rgba(0,240,255,.2);
}
.prose img{border-radius:var(--r-md);border:1px solid var(--line-soft);margin:26px 0}
.prose table{width:100%;border-collapse:collapse;margin:26px 0;font-size:14.6px}
.prose th,.prose td{padding:12px 14px;border:1px solid var(--line-soft);text-align:left}
.prose th{background:rgba(204,255,0,.08);color:#fff;font-weight:700}
.prose code{background:rgba(255,255,255,.08);padding:2px 7px;border-radius:6px;font-size:14px}
.prose hr{border:0;border-top:1px solid var(--line-soft);margin:34px 0}

.empty-state{padding:52px 30px;border-radius:var(--r-lg);background:var(--panel);border:1px solid var(--line-soft);text-align:left}
.empty-state h2{font-size:24px;margin-bottom:12px}
.empty-state p{color:var(--muted);max-width:52ch;margin-bottom:22px}

.side{display:grid;gap:20px;position:sticky;top:96px}
.side-card{padding:22px;border-radius:var(--r-md);background:var(--panel);border:1px solid var(--line-soft)}
.side-card h3{font-size:14.5px;margin-bottom:14px;color:#fff}
.side-list{display:grid;gap:11px}
.side-list a{display:flex;gap:10px;align-items:flex-start;font-size:14px;font-weight:600;color:#D6DBDF;line-height:1.45}
.side-list a::before{content:"›";color:var(--lime);font-weight:800;flex:0 0 auto}
.side-list a:hover{color:var(--lime)}
.pay-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:6px}
.chip{padding:6px 11px;border-radius:8px;font-size:12px;font-weight:700;background:rgba(255,255,255,.07);border:1px solid var(--line-soft);color:#DDE3E6}
.side-note{font-size:13.2px;color:var(--muted);line-height:1.55}

/* ============ MATRIX ============ */
.matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.mcard{
  padding:26px 24px;border-radius:var(--r-md);background:rgba(10,8,24,.6);
  border:1px solid var(--line-soft);transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.mcard:hover{transform:translateY(-6px);border-color:rgba(0,240,255,.4);box-shadow:0 16px 40px rgba(0,240,255,.16)}
.mcard .ico{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:20px;margin-bottom:16px;
  background:rgba(204,255,0,.1);border:1px solid var(--line);
}
.mcard h3{font-size:17.4px;margin-bottom:9px}
.mcard p{font-size:14.4px;color:var(--muted);line-height:1.6}
.mcard .lnk{display:inline-block;margin-top:15px;font-size:13.4px;font-weight:700;color:var(--lime)}
.mcard .lnk:hover{color:var(--cyan)}

/* ============ COMPARE ============ */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.cmp{padding:28px 26px;border-radius:var(--r-lg);border:1px solid var(--line-soft);background:rgba(255,255,255,.03)}
.cmp.pro{border-color:var(--line);background:linear-gradient(180deg,rgba(204,255,0,.09),rgba(0,240,255,.05));box-shadow:var(--sh-glow)}
.cmp h3{font-size:18.6px;margin-bottom:6px}
.cmp .lbl{font-size:11.6px;letter-spacing:1.2px;text-transform:uppercase;color:var(--muted-2);font-weight:700}
.cmp ul{margin-top:18px;display:grid;gap:12px}
.cmp li{list-style:none;display:flex;gap:11px;font-size:14.5px;color:#CFD5D9;line-height:1.55}
.cmp li i{flex:0 0 auto;width:19px;height:19px;border-radius:50%;display:grid;place-items:center;font-size:11px;font-style:normal;margin-top:2px}
.cmp li i.y{background:rgba(204,255,0,.16);color:var(--lime);border:1px solid var(--line)}
.cmp li i.n{background:rgba(255,255,255,.06);color:var(--muted-2);border:1px solid var(--line-soft)}
.cmp .price{margin-top:22px;padding-top:18px;border-top:1px solid var(--line-soft);font-size:23px;font-weight:800}
.cmp .price small{display:block;font-size:12.8px;font-weight:500;color:var(--muted);margin-top:5px}

/* ============ FAQ ============ */
.faq{display:grid;gap:12px;max-width:900px}
details{border:1px solid var(--line-soft);border-radius:var(--r-md);background:rgba(255,255,255,.035);transition:border-color .25s ease,background .25s ease}
details:hover{border-color:rgba(0,240,255,.3)}
details[open]{background:rgba(0,240,255,.05);border-color:rgba(0,240,255,.32)}
summary{
  list-style:none;cursor:pointer;padding:18px 22px;display:flex;gap:14px;align-items:center;
  font-size:15.6px;font-weight:700;color:#F2F5F6;
}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";margin-left:auto;font-size:21px;font-weight:700;color:var(--lime);transition:transform .25s ease}
details[open] summary::after{transform:rotate(45deg)}
details p{padding:0 22px 20px;color:var(--muted);font-size:14.6px;line-height:1.7;max-width:72ch}

/* ============ CTA FORM ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--line);background:linear-gradient(120deg,rgba(204,255,0,.1),rgba(0,240,255,.08));
  padding:clamp(28px,4vw,48px);
}
.cta-band::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:url("/assets/images/backpic/back-3.jpg") center/cover no-repeat;opacity:.16;
}
.cta-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);gap:clamp(26px,4vw,50px);align-items:center}
.cta-grid h2{font-size:clamp(23px,3vw,33px);margin-bottom:14px}
.cta-grid p{color:#D5DADE;font-size:15.2px;max-width:52ch}
.mini-list{margin-top:20px;display:grid;gap:9px}
.mini-list li{list-style:none;display:flex;gap:10px;font-size:14px;color:#C7CDD2}
.mini-list li::before{content:"✓";color:var(--lime);font-weight:800}
form.reg{display:grid;gap:13px;padding:24px;border-radius:var(--r-md);background:rgba(8,6,20,.72);border:1px solid var(--line-soft);backdrop-filter:blur(6px)}
form.reg label{font-size:12.4px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:7px}
form.reg input,form.reg select{
  width:100%;padding:13px 14px;border-radius:10px;background:rgba(255,255,255,.05);
  border:1px solid var(--line-soft);color:#fff;font-size:14.6px;transition:border-color .22s ease,background .22s ease;
}
form.reg input::placeholder{color:#6E767C}
form.reg input:hover,form.reg select:hover{border-color:rgba(204,255,0,.34)}
form.reg input:focus,form.reg select:focus{border-color:var(--lime);background:rgba(255,255,255,.08)}
form.reg button{
  margin-top:5px;padding:15px 20px;border:0;border-radius:11px;cursor:pointer;
  font-size:15.4px;font-weight:800;color:#0B1A30;
  background:linear-gradient(120deg,var(--lime),var(--cyan));
  box-shadow:0 10px 26px rgba(0,240,255,.28);transition:transform .2s ease,box-shadow .2s ease;
}
form.reg button:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(204,255,0,.34)}
form.reg button:active{transform:translateY(0) scale(.985)}
form.reg .hint{font-size:12.4px;color:var(--muted-2);line-height:1.55}

/* ============ FAB ============ */
.fab{
  position:fixed;left:18px;bottom:96px;z-index:70;
  display:inline-flex;align-items:center;gap:9px;min-height:48px;padding:12px 17px;
  border-radius:999px;font-size:13.6px;font-weight:800;color:#EFFFD6;
  background:rgba(8,6,20,.66);backdrop-filter:blur(10px);
  border:1px solid transparent;
  background-image:linear-gradient(rgba(8,6,20,.72),rgba(8,6,20,.72)),linear-gradient(120deg,var(--lime),var(--cyan));
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 15px rgba(0,240,255,.45);opacity:.68;
  transition:opacity .25s ease,transform .25s ease,box-shadow .25s ease;
}
.fab:hover{opacity:1;color:#fff;transform:translateY(-2px);box-shadow:0 0 26px rgba(204,255,0,.5)}
.fab:active{transform:scale(.96);box-shadow:0 0 24px rgba(255,0,127,.5)}
.fab .dot{width:8px;height:8px;border-radius:50%;background:var(--lime);animation:pl 2s infinite}

/* ============ FOOTER ============ */
.site-footer{
  margin-top:var(--sp);padding:56px 0 26px;
  background:linear-gradient(180deg,rgba(8,6,20,.4),rgba(6,5,16,.96));
  border-top:1px solid var(--line);
}
.f-grid{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));gap:34px}
.f-brand .logo{margin-bottom:14px}
.f-brand p{font-size:13.8px;color:var(--muted);max-width:40ch;line-height:1.65}
.f-col h4{font-size:12.6px;letter-spacing:1.2px;text-transform:uppercase;color:#E4FF9C;margin-bottom:16px}
.f-col ul{display:grid;gap:10px}
.f-col li{list-style:none}
.f-col a,.f-col span{font-size:13.8px;color:var(--muted)}
.f-col a:hover{color:var(--lime)}
.f-user{display:flex;align-items:center;gap:11px;margin-top:18px}
.avatar{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;flex:0 0 auto;
  font-size:13.4px;font-weight:800;color:#0B1A30;background:linear-gradient(135deg,var(--lime),var(--cyan));
}
.f-user b{display:block;font-size:13.8px;color:#EDF1F3}
.f-user span{display:block;font-size:12.4px;color:var(--muted-2)}
.f-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.8px;color:var(--muted-2);
}
.f-bottom a{color:var(--muted)}

/* ============ RESPONSIVE ============ */
@media (max-width:1100px){
  .doc-head{grid-template-columns:1fr}
  .body-wrap{grid-template-columns:1fr}
  .side{position:static;grid-template-columns:repeat(2,minmax(0,1fr));display:grid}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .f-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1024px){
  .nav{flex-wrap:wrap;min-height:auto;padding:14px 0;gap:12px}
  .nav-links{order:3;width:100%;margin-left:0;padding-bottom:4px;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .nav-cta{margin-left:auto}
  .page-top{padding-top:150px}
  .matrix{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sec-head.split{grid-template-columns:1fr;align-items:start}
  .cta-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  body{font-size:15.4px}
  .container{padding:0 17px}
  .logo-txt{font-size:14.4px;max-width:190px}
  .logo-txt small{display:none}
  .compare{grid-template-columns:1fr}
  .prose{font-size:15.8px}
  .doc-meta{gap:18px}
}
@media (max-width:520px){
  .page-top{padding-top:158px}
  .matrix,.side{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr;gap:26px}
  .btn-ghost{padding:9px 11px;font-size:12.6px}
  .btn-solid{padding:10px 14px;font-size:12.8px}
  .fab{left:12px;bottom:20px;padding:11px 14px}
  .doc-head h1{font-size:27px}
  summary{font-size:14.8px;padding:16px 17px}
  details p{padding:0 17px 17px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}

/* roulang page: category2 */
:root{
  --bg:#121212;
  --bg-2:#1C1C1E;
  --bg-3:#232326;
  --line:rgba(197,160,89,.22);
  --line-soft:rgba(255,255,255,.08);
  --gold:#C5A059;
  --gold-2:#FFBF00;
  --gold-dim:#D4AC0D;
  --txt:#F5F5F7;
  --txt-dim:#A7A7AD;
  --ok:#4ADE80;
  --hot:#FF5A5F;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --sp:clamp(56px,7vw,104px);
  --shadow:0 18px 44px rgba(0,0,0,.55);
  --font:"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --serif:Georgia,"Times New Roman",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--txt);font-family:var(--font);
  font-size:16px;line-height:1.62;letter-spacing:.1px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--gold-dim);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--gold-2)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.18;font-weight:700}
h1{font-size:clamp(30px,4.6vw,52px);letter-spacing:-.5px}
h2{font-size:clamp(24px,3vw,36px)}
h3{font-size:clamp(18px,1.5vw,21px)}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--gold-2);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:2.2px;text-transform:uppercase;
  color:var(--gold);font-weight:700;margin-bottom:14px;
}
.lead{font-size:clamp(16px,1.35vw,18.5px);color:var(--txt-dim);max-width:62ch}
.divider{height:1px;background:linear-gradient(90deg,var(--line),transparent);border:0;margin:0}

/* header */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:60;
  background:rgba(18,18,18,.9);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);opacity:.7;
}
.nav{display:flex;align-items:center;gap:18px;min-height:74px}
.logo{display:flex;align-items:center;gap:11px;color:var(--txt);flex:0 0 auto}
.logo:hover{color:var(--txt)}
.logo-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  display:grid;place-items:center;font-size:19px;color:#171308;
  background:linear-gradient(140deg,var(--gold-2),var(--gold));
  box-shadow:0 6px 18px rgba(197,160,89,.32);
}
.logo-txt{display:flex;flex-direction:column;font-weight:700;font-size:15.5px;line-height:1.22;max-width:230px}
.logo-txt small{font-weight:500;font-size:11.5px;color:var(--txt-dim);letter-spacing:.2px;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap;overflow:auto;scrollbar-width:none}
.nav-links::-webkit-scrollbar{display:none}
.nav-links a{
  position:relative;padding:9px 12px;border-radius:var(--r-s);white-space:nowrap;
  font-size:13.6px;font-weight:600;color:var(--txt-dim);
}
.nav-links a:hover{color:var(--txt);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--gold-2);background:rgba(197,160,89,.12)}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--gold-2);box-shadow:0 0 10px rgba(255,191,0,.75);
}
.nav-cta{display:flex;align-items:center;gap:9px;flex:0 0 auto}
.btn-ghost,.btn-solid{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:700;font-size:13.6px;padding:10px 18px;
  border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
}
.btn-ghost{color:var(--txt);border-color:var(--line-soft);background:transparent}
.btn-ghost:hover{color:var(--gold-2);border-color:var(--gold);background:rgba(197,160,89,.1)}
.btn-solid{background:linear-gradient(135deg,var(--gold-2),var(--gold));color:#1a1503;box-shadow:0 8px 22px rgba(197,160,89,.3)}
.btn-solid:hover{color:#1a1503;transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,191,0,.36)}
.btn-solid:active,.btn-ghost:active{transform:translateY(1px)}
.btn-lg{padding:14px 26px;font-size:15px}

/* hero */
.hero{position:relative;padding:calc(74px + var(--sp)) 0 var(--sp);overflow:hidden}
.hero-bg{
  position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.jpg") center/cover no-repeat;
  opacity:.34;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:
    radial-gradient(900px 420px at 78% 12%,rgba(197,160,89,.22),transparent 65%),
    linear-gradient(180deg,rgba(18,18,18,.82),rgba(18,18,18,.96) 72%,var(--bg));
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,4vw,64px);align-items:center}
.hero-copy h1 span{
  display:block;font-family:var(--serif);font-style:italic;font-weight:400;
  color:var(--gold-2);font-size:.62em;margin-top:10px;
}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 26px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;color:var(--txt-dim);
  border:1px solid var(--line-soft);background:rgba(255,255,255,.04);
}
.badge.live{color:#ffdede;border-color:rgba(255,90,95,.4);background:rgba(255,90,95,.12)}
.badge.live i{width:7px;height:7px;border-radius:50%;background:var(--hot);animation:blip 1.4s infinite}
@keyframes blip{0%,100%{opacity:1}50%{opacity:.25}}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.hero-note{font-size:12.8px;color:var(--txt-dim);margin-top:16px}

/* stage panel */
.stage{
  position:relative;border-radius:var(--r-l);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-2);box-shadow:var(--shadow);
}
.stage-media{position:relative}
.stage-media img{height:230px;object-fit:cover;opacity:.86}
.stage-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(18,18,18,.1),rgba(28,28,30,.95))}
.stage-tag{
  position:absolute;z-index:2;top:14px;left:14px;padding:6px 12px;border-radius:999px;
  font-size:11.5px;font-weight:800;letter-spacing:1.4px;text-transform:uppercase;
  background:var(--hot);color:#fff;box-shadow:0 6px 18px rgba(255,90,95,.4);
}
.stage-body{position:relative;z-index:2;padding:22px 24px 26px;margin-top:-58px}
.stage-body h2{font-size:20px;margin-bottom:6px}
.stage-body p{font-size:13.8px;color:var(--txt-dim);margin-bottom:18px}
.count{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:18px}
.count div{
  text-align:center;padding:12px 4px;border-radius:var(--r-m);
  background:var(--bg-3);border:1px solid var(--line-soft);
}
.count b{display:block;font-size:24px;font-family:var(--serif);color:var(--gold-2);line-height:1}
.count span{font-size:10.5px;letter-spacing:1.2px;text-transform:uppercase;color:var(--txt-dim)}
.remind{display:flex;gap:8px}
.remind input{
  flex:1;min-width:0;padding:12px 14px;border-radius:999px;background:#101012;
  border:1px solid var(--line-soft);color:var(--txt);font-size:14px;
}
.remind input::placeholder{color:#70707a}
.remind input:focus{border-color:var(--gold);outline:none;box-shadow:0 0 0 3px rgba(197,160,89,.16)}
.remind-ok{font-size:12.5px;color:var(--ok);margin:10px 0 0;display:none}

/* sections */
section{padding:var(--sp) 0}
.sec-head{max-width:760px;margin-bottom:clamp(28px,3.4vw,46px)}
.sec-head.tight{margin-bottom:26px}
.band{background:var(--bg-2);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}

/* metrics */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;background:var(--bg-2)}
.metric{padding:26px 24px;border-right:1px solid var(--line-soft)}
.metric:last-child{border-right:0}
.metric b{display:block;font-size:clamp(28px,3.4vw,40px);font-family:var(--serif);color:var(--gold-2);line-height:1.05}
.metric strong{display:block;font-size:14px;margin:8px 0 4px}
.metric p{font-size:13px;color:var(--txt-dim);margin:0}
.bar{height:5px;border-radius:99px;background:#2c2c30;margin-top:14px;overflow:hidden}
.bar i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--gold),var(--gold-2))}

/* matrix */
.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pack{
  display:flex;flex-direction:column;border:1px solid var(--line-soft);border-radius:var(--r-l);
  overflow:hidden;background:var(--bg-2);transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.pack:hover{transform:translateY(-5px);border-color:var(--gold);box-shadow:0 16px 40px rgba(0,0,0,.5)}
.pack-media{position:relative}
.pack-media img{height:158px;object-fit:cover;opacity:.8;transition:opacity .25s ease}
.pack:hover .pack-media img{opacity:1}
.pack-label{
  position:absolute;top:12px;left:12px;padding:5px 11px;border-radius:6px;font-size:11px;
  font-weight:800;letter-spacing:1.1px;text-transform:uppercase;
  background:rgba(18,18,18,.82);color:var(--gold-2);border:1px solid var(--line);
}
.pack-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.pack-body h3{margin-bottom:8px}
.pack-body p{font-size:13.8px;color:var(--txt-dim)}
.size{font-size:12.5px;color:var(--gold);font-weight:700;letter-spacing:.6px;margin-bottom:10px}
.tags{display:flex;flex-wrap:wrap;gap:7px;margin:4px 0 18px}
.tag{
  font-size:11.5px;font-weight:600;padding:5px 10px;border-radius:6px;color:var(--txt-dim);
  background:#26262a;border:1px solid var(--line-soft);
}
.pack .btn-ghost{margin-top:auto;align-self:flex-start}

/* compare */
.cmp-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(26px,3.6vw,56px);align-items:start}
.cmp{width:100%;border-collapse:collapse;border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden}
.cmp caption{text-align:left;font-size:12.5px;color:var(--txt-dim);padding-bottom:10px}
.cmp th,.cmp td{padding:14px 16px;text-align:left;font-size:14px;border-bottom:1px solid var(--line-soft)}
.cmp thead th{background:var(--bg-3);font-size:12px;letter-spacing:1.2px;text-transform:uppercase;color:var(--txt-dim)}
.cmp thead th:last-child{color:var(--gold-2)}
.cmp tbody tr:hover{background:rgba(197,160,89,.06)}
.cmp td:first-child{color:var(--txt-dim)}
.cmp td:last-child{font-weight:700}
.cmp tbody tr:last-child td{border-bottom:0}
.yes{color:var(--ok)}
.no{color:#8a8a92}

/* steps */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(2,1fr);gap:26px 40px}
.step{counter-increment:s;position:relative;padding-left:60px}
.step::before{
  content:counter(s,decimal-leading-zero);position:absolute;left:0;top:-4px;
  font-family:var(--serif);font-size:30px;color:var(--gold);opacity:.85;
}
.step h3{font-size:17.5px;margin-bottom:6px}
.step p{font-size:13.9px;color:var(--txt-dim);margin:0}

/* voices */
.voices{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.voice{
  border-left:2px solid var(--gold);padding:4px 0 4px 20px;
}
.voice blockquote{margin:0 0 14px;font-size:15px;line-height:1.65}
.voice footer{display:flex;align-items:center;gap:11px}
.voice .avatar{
  width:38px;height:38px;flex:0 0 38px;border-radius:50%;display:grid;place-items:center;
  font-size:13px;font-weight:800;color:#1a1503;background:linear-gradient(140deg,var(--gold-2),var(--gold));
}
.voice footer b{display:block;font-size:13.6px}
.voice footer span{font-size:12.2px;color:var(--txt-dim)}

/* faq */
.faq{max-width:900px}
.faq details{border-bottom:1px solid var(--line-soft);padding:4px 0}
.faq summary{
  list-style:none;cursor:pointer;padding:18px 44px 18px 0;position:relative;
  font-weight:700;font-size:16.2px;transition:color .2s ease;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--gold-2)}
.faq summary::after{
  content:"+";position:absolute;right:8px;top:14px;font-size:24px;font-weight:400;color:var(--gold);
  transition:transform .22s ease;
}
.faq details[open] summary{color:var(--gold-2)}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .ans{padding:0 40px 20px 0;color:var(--txt-dim);font-size:14.4px}

/* cta form */
.cta{position:relative;overflow:hidden;background:var(--bg-2);border-top:1px solid var(--line)}
.cta::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/coverpic/cover-9.png") center/cover no-repeat;opacity:.1;
}
.cta .container{position:relative;z-index:2}
.cta-box{max-width:760px;margin:0 auto;text-align:center}
.form{
  margin-top:28px;display:grid;grid-template-columns:repeat(2,1fr);gap:14px;text-align:left;
  background:rgba(18,18,18,.72);border:1px solid var(--line);border-radius:var(--r-l);padding:26px;
}
.field{display:flex;flex-direction:column;gap:7px}
.field.wide{grid-column:1/-1}
.field label{font-size:12px;letter-spacing:1.1px;text-transform:uppercase;color:var(--txt-dim);font-weight:700}
.field input,.field select{
  padding:12px 14px;border-radius:var(--r-s);background:#101012;border:1px solid var(--line-soft);font-size:14.5px;
}
.field input:focus,.field select:focus{border-color:var(--gold);outline:none;box-shadow:0 0 0 3px rgba(197,160,89,.16)}
.form .hint{grid-column:1/-1;font-size:12.4px;color:var(--txt-dim);margin:0}
.form .btn-solid{grid-column:1/-1;width:100%}
.pay{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:22px}
.pay span{
  font-size:12px;font-weight:700;letter-spacing:.7px;padding:7px 13px;border-radius:8px;
  color:var(--txt-dim);border:1px solid var(--line-soft);background:rgba(255,255,255,.04);
}

/* footer */
.site-footer{background:#0d0d0e;border-top:1px solid var(--line);padding:56px 0 26px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px}
.foot-brand .logo{margin-bottom:14px}
.foot-brand p{color:var(--txt-dim);font-size:13.6px;max-width:42ch}
.foot-col h4{font-size:12.5px;letter-spacing:1.4px;text-transform:uppercase;color:var(--gold);margin-bottom:14px}
.foot-col li{margin-bottom:9px}
.foot-col a{color:var(--txt-dim);font-size:13.8px}
.foot-col a:hover{color:var(--gold-2)}
.foot-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  font-size:12.6px;color:#82828a;
}
.age{
  display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;
  border:1px solid var(--gold);color:var(--gold-2);font-size:11.5px;font-weight:800;
}

/* FAB */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:70;display:inline-flex;align-items:center;gap:9px;
  min-height:48px;padding:12px 18px;border-radius:999px;font-weight:800;font-size:13.5px;
  color:var(--gold-2);background:rgba(10,10,12,.66);backdrop-filter:blur(10px);
  border:1px solid transparent;
  background-image:linear-gradient(rgba(10,10,12,.8),rgba(10,10,12,.8)),linear-gradient(120deg,var(--gold-2),#4ADE80,var(--gold));
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 16px rgba(197,160,89,.4);opacity:.72;
  transition:opacity .2s ease,transform .2s ease,box-shadow .25s ease;
  animation:fabBreathe 3.4s ease-in-out infinite;
}
.fab:hover{opacity:1;transform:scale(1.07);color:var(--gold-2);box-shadow:0 0 28px rgba(255,191,0,.55)}
.fab:active{transform:scale(.96);box-shadow:0 0 20px rgba(255,90,95,.6)}
.fab i{width:9px;height:9px;border-radius:50%;background:var(--ok);box-shadow:0 0 8px var(--ok)}
@keyframes fabBreathe{0%,100%{opacity:.72}50%{opacity:.95}}

@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metric{border-bottom:1px solid var(--line-soft)}
  .metric:nth-child(2n){border-right:0}
  .matrix{grid-template-columns:repeat(2,1fr)}
  .cmp-wrap{grid-template-columns:1fr}
  .voices{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .logo-txt small{display:none}
}
@media (max-width:768px){
  .nav{min-height:66px;flex-wrap:wrap;gap:10px;padding:10px 0}
  .nav-links{order:3;width:100%;margin-left:0;padding-bottom:2px}
  .nav-cta{margin-left:auto}
  .hero{padding-top:calc(120px + 4vw)}
  .steps{grid-template-columns:1fr;gap:22px}
  .voices{grid-template-columns:1fr}
  .stage-media img{height:190px}
}
@media (max-width:520px){
  .matrix{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr}
  .metric{border-right:0}
  .count{grid-template-columns:repeat(2,1fr)}
  .form{grid-template-columns:1fr;padding:20px}
  .remind{flex-direction:column}
  .remind .btn-solid{width:100%}
  .logo-txt{font-size:14px;max-width:170px}
  .btn-ghost,.btn-solid{padding:9px 14px;font-size:13px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .fab{bottom:80px;left:12px;padding:11px 15px}
  .cmp th,.cmp td{padding:12px 11px;font-size:13.4px}
}

/* roulang page: category3 */
:root{
  --bg:#08090F;
  --bg-2:#0D111E;
  --bg-3:#111729;
  --panel:rgba(17,23,41,.78);
  --blue:#0052FF;
  --blue-soft:#2f6bff;
  --cyan:#00F0FF;
  --txt:#FFFFFF;
  --muted:#CBD5E1;
  --muted-2:#8f9cb5;
  --line:rgba(120,150,220,.22);
  --line-strong:rgba(0,240,255,.45);
  --ok:#3ddc97;
  --warn:#ff9f43;
  --bad:#ff5470;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --sp:clamp(56px,7vw,104px);
  --shadow:0 24px 60px rgba(0,8,30,.6);
  --glow:0 0 22px rgba(0,240,255,.35);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
  background:var(--bg);
  color:var(--txt);
  line-height:1.62;
  font-size:16.5px;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;inset:0;
  background-image:linear-gradient(rgba(70,110,200,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(70,110,200,.06) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;z-index:0;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--cyan);text-decoration:none;transition:.22s ease}
a:hover{color:#8ff8ff}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.18;letter-spacing:-.4px}
h1{font-size:clamp(31px,4.4vw,52px);font-weight:800}
h2{font-size:clamp(25px,3vw,36px);font-weight:750}
h3{font-size:clamp(18px,1.6vw,21px);font-weight:650}
p{margin:0 0 1.05em;color:var(--muted)}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
.container{width:min(1200px,100% - 40px);margin-inline:auto;position:relative;z-index:1}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;font-weight:700;letter-spacing:2px;text-transform:uppercase;
  color:var(--cyan);margin-bottom:16px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--blue),var(--cyan))}
.lead{font-size:clamp(16.5px,1.35vw,18.5px);color:var(--muted);max-width:66ch}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(8,9,15,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--blue),var(--cyan),transparent);
  opacity:.75;
}
.nav{display:flex;align-items:center;gap:22px;min-height:76px}
.logo{display:flex;align-items:center;gap:12px;color:var(--txt);flex:0 0 auto}
.logo:hover{color:var(--txt)}
.logo-mark{
  width:42px;height:42px;display:grid;place-items:center;font-size:19px;
  color:#001018;border-radius:12px;
  background:linear-gradient(135deg,var(--cyan),var(--blue));
  box-shadow:var(--glow);
}
.logo-txt{display:flex;flex-direction:column;font-weight:750;font-size:15.5px;line-height:1.25;max-width:250px}
.logo-txt small{font-weight:400;font-size:11.5px;color:var(--muted-2);letter-spacing:.2px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;overflow:auto;scrollbar-width:none}
.nav-links::-webkit-scrollbar{display:none}
.nav-links a{
  position:relative;white-space:nowrap;
  padding:10px 13px;border-radius:var(--r-s);
  font-size:14px;font-weight:550;color:var(--muted);
  border:1px solid transparent;
}
.nav-links a:hover{color:#fff;background:rgba(0,82,255,.14);border-color:var(--line)}
.nav-links a.active{
  color:#fff;background:rgba(0,240,255,.1);
  border-color:var(--line-strong);
  box-shadow:inset 0 -2px 0 var(--cyan);
}
.nav-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.btn-ghost{
  padding:10px 15px;border-radius:var(--r-s);font-size:14px;font-weight:600;
  color:var(--muted);border:1px solid var(--line);
}
.btn-ghost:hover{color:#fff;border-color:var(--line-strong)}
.btn-solid{
  padding:11px 19px;border-radius:var(--r-s);font-size:14px;font-weight:700;
  color:#fff;background:linear-gradient(120deg,var(--blue),#0091ff);
  box-shadow:0 10px 26px rgba(0,82,255,.4);
}
.btn-solid:hover{color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px rgba(0,145,255,.5)}
.btn-solid:active{transform:translateY(0)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 26px;border-radius:var(--r-s);border:1px solid transparent;
  font-weight:700;font-size:15px;cursor:pointer;transition:.24s ease;
}
.btn-primary{background:linear-gradient(120deg,var(--blue),#00a3ff);color:#fff;box-shadow:0 14px 34px rgba(0,82,255,.42)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 40px rgba(0,163,255,.5)}
.btn-line{border-color:var(--line-strong);color:var(--cyan);background:rgba(0,240,255,.06)}
.btn-line:hover{background:rgba(0,240,255,.14);color:#c9fbff}
.btn:active{transform:translateY(0)}
.badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 12px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.4px;
  border:1px solid var(--line);color:var(--muted);background:rgba(13,17,30,.7);
}
.badge-live{color:#ffd3dc;border-color:rgba(255,84,112,.5);background:rgba(255,84,112,.12)}
.badge-live .dot{width:8px;height:8px;border-radius:50%;background:var(--bad);animation:blip 1.4s infinite}
.badge-ok{color:#bdf6dd;border-color:rgba(61,220,151,.45);background:rgba(61,220,151,.1)}
@keyframes blip{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(255,84,112,.6)}50%{opacity:.55;box-shadow:0 0 0 7px rgba(255,84,112,0)}}

/* ---------- hero ---------- */
.hero{
  position:relative;padding:clamp(58px,7vw,96px) 0 clamp(56px,6vw,84px);
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(115deg,rgba(8,9,15,.95) 8%,rgba(8,9,15,.72) 48%,rgba(0,82,255,.24) 100%),
    url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:clamp(28px,4vw,62px);align-items:center}
.hero h1{max-width:17ch}
.hero .hero-sub{font-size:clamp(16px,1.4vw,19px);max-width:56ch;color:#dfe7f7}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-note{margin-top:20px;font-size:13.5px;color:var(--muted-2);display:flex;flex-wrap:wrap;gap:6px 18px}
.hero-note span{display:inline-flex;align-items:center;gap:7px}
.hero-note i{width:6px;height:6px;border-radius:50%;background:var(--cyan);display:inline-block}
.stage{
  border-radius:var(--r-l);padding:26px;
  background:linear-gradient(170deg,rgba(0,82,255,.2),rgba(13,17,30,.92));
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow),0 0 60px rgba(0,240,255,.12) inset;
}
.stage-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.stage-title{font-size:15px;font-weight:700}
.stage-title small{display:block;font-weight:400;font-size:12.5px;color:var(--muted-2)}
.count{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:6px 0 18px}
.count div{
  text-align:center;padding:13px 6px;border-radius:var(--r-m);
  background:rgba(8,9,15,.72);border:1px solid var(--line);
}
.count b{display:block;font-size:clamp(21px,2.4vw,29px);font-weight:800;color:#fff;font-variant-numeric:tabular-nums}
.count span{font-size:11px;letter-spacing:1.2px;text-transform:uppercase;color:var(--muted-2)}
.stage-list li{
  display:flex;gap:11px;align-items:flex-start;
  padding:10px 0;border-top:1px dashed var(--line);font-size:14.2px;color:var(--muted);
}
.stage-list li:first-child{border-top:0}
.stage-list em{
  flex:0 0 auto;font-style:normal;font-weight:800;font-size:11.5px;
  color:var(--cyan);padding-top:3px;
}
.remind{display:flex;gap:9px;margin-top:18px}
.remind input{
  flex:1;padding:12px 14px;border-radius:var(--r-s);
  background:rgba(8,9,15,.8);border:1px solid var(--line);color:#fff;
}
.remind input::placeholder{color:#6d7a92}
.remind input:focus{border-color:var(--cyan);outline:none;box-shadow:0 0 0 3px rgba(0,240,255,.16)}
.remind button{padding:12px 18px;border-radius:var(--r-s);border:0;font-weight:700;background:linear-gradient(120deg,var(--blue),#00a3ff);color:#fff;cursor:pointer}
.remind button:hover{filter:brightness(1.08)}

/* ---------- generic section ---------- */
section{padding:var(--sp) 0;position:relative}
.sec-head{max-width:74ch;margin-bottom:clamp(30px,3.4vw,48px)}
.sec-head.split{display:grid;grid-template-columns:1.25fr .75fr;gap:30px;align-items:end;max-width:none}
.divider{height:1px;background:linear-gradient(90deg,var(--line),transparent);margin:0}

/* ---------- metrics ---------- */
.metrics{background:linear-gradient(180deg,rgba(0,82,255,.09),transparent 70%)}
.metric-board{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;
  background:var(--panel);box-shadow:var(--shadow);
}
.metric{padding:26px 24px;border-right:1px solid var(--line);transition:.25s ease}
.metric:last-child{border-right:0}
.metric:hover{background:rgba(0,82,255,.12)}
.metric b{display:block;font-size:clamp(28px,3.4vw,40px);font-weight:800;letter-spacing:-1px}
.metric b i{font-style:normal;font-size:.5em;color:var(--cyan);margin-left:4px}
.metric span{display:block;font-size:13.5px;color:var(--muted-2);margin-top:4px}
.metric p{margin:12px 0 0;font-size:13.6px;line-height:1.55}
.bar{height:5px;border-radius:99px;background:rgba(255,255,255,.1);margin-top:14px;overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--cyan))}

/* ---------- matrix ---------- */
.matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.plat{
  border:1px solid var(--line);border-radius:var(--r-l);
  background:linear-gradient(200deg,rgba(17,23,41,.9),rgba(8,9,15,.9));
  padding:clamp(22px,2.4vw,32px);transition:.28s ease;
}
.plat:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:0 20px 44px rgba(0,60,180,.3)}
.plat-head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:6px}
.plat-head h3{margin:0}
.plat > p{font-size:14.5px}
.steps{counter-reset:s;margin-top:14px}
.steps li{display:grid;grid-template-columns:44px 1fr;gap:14px;padding:16px 0;border-top:1px solid var(--line)}
.steps li:last-child{padding-bottom:0}
.steps .num{
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  font-weight:800;font-size:14px;color:var(--cyan);
  background:rgba(0,240,255,.08);border:1px solid var(--line-strong);
}
.steps h4{margin:2px 0 5px;font-size:16px;font-weight:650}
.steps p{margin:0;font-size:14px;line-height:1.6}

/* ---------- compare ---------- */
.compare-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(26px,3.4vw,50px);align-items:start}
.compare-visual{border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);position:relative}
.compare-visual img{aspect-ratio:4/3;object-fit:cover}
.compare-visual figcaption{
  position:absolute;inset:auto 0 0 0;padding:18px 20px;font-size:13.5px;color:#e6ecfa;
  background:linear-gradient(0deg,rgba(8,9,15,.94),transparent);
}
table.cmp{width:100%;border-collapse:collapse;font-size:14.6px}
table.cmp caption{text-align:left;color:var(--muted-2);font-size:13.5px;padding-bottom:12px}
table.cmp th,table.cmp td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.cmp thead th{font-size:12.5px;letter-spacing:1px;text-transform:uppercase;color:var(--muted-2);font-weight:700}
table.cmp tbody th{font-weight:600;color:#fff;width:32%}
.yes{color:var(--ok);font-weight:600}
.no{color:var(--bad);font-weight:600}
table.cmp tbody tr:hover{background:rgba(0,82,255,.08)}

/* ---------- alerts ---------- */
.alerts{background:linear-gradient(180deg,transparent,rgba(255,84,112,.07))}
.alert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px 26px}
.alert-grid li{padding-left:18px;border-left:2px solid rgba(255,84,112,.55);font-size:14.6px;color:var(--muted)}
.alert-grid li b{display:block;color:#fff;font-size:15.5px;margin-bottom:4px}
.fix{margin-top:38px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.fix article{padding:22px;border-radius:var(--r-m);background:rgba(17,23,41,.72);border:1px solid var(--line)}
.fix h4{font-size:15.5px;margin-bottom:8px}
.fix p{font-size:14px;margin:0}
.fix span{font-size:12px;letter-spacing:1px;text-transform:uppercase;color:var(--warn);font-weight:700}

/* ---------- feedback strip ---------- */
.voices{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:center}
.voice-list li{padding:20px 0;border-top:1px solid var(--line)}
.voice-list li:first-child{border-top:0;padding-top:0}
.voice-list p{margin:0 0 10px;color:#e4eafa;font-size:15.4px}
.who{display:flex;align-items:center;gap:12px;font-size:13.4px;color:var(--muted-2)}
.who .avatar{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  font-size:13px;font-weight:800;color:#001018;background:linear-gradient(135deg,var(--cyan),var(--blue));
}
.voice-shot{border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.voice-shot img{aspect-ratio:16/11;object-fit:cover}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(26px,3.5vw,54px);align-items:start}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  cursor:pointer;list-style:none;padding:19px 34px 19px 0;position:relative;
  font-weight:650;font-size:16px;color:#fff;transition:.2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:2px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--cyan);transition:.25s ease;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-item summary:hover{color:var(--cyan)}
.faq-item .faq-body{padding:0 0 20px;font-size:14.8px;color:var(--muted);max-width:68ch}
.faq-aside{position:sticky;top:100px}
.faq-aside .mini{
  margin-top:22px;padding:20px;border-radius:var(--r-m);
  border:1px solid var(--line-strong);background:rgba(0,240,255,.05);font-size:14px;color:var(--muted);
}
.faq-aside .mini b{color:#fff}

/* ---------- form / cta ---------- */
.signup{
  border-top:1px solid var(--line);
  background:
    linear-gradient(100deg,rgba(8,9,15,.95) 30%,rgba(0,82,255,.3)),
    url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
}
.signup-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,60px);align-items:center}
.form-card{
  padding:clamp(24px,2.6vw,36px);border-radius:var(--r-l);
  background:rgba(13,17,30,.92);border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
.form-card h3{margin-bottom:4px}
.form-card .hint{font-size:13.5px;color:var(--muted-2);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:650;color:var(--muted);margin-bottom:7px;letter-spacing:.3px}
.field input,.field select,.field textarea{
  width:100%;padding:13px 15px;border-radius:var(--r-s);
  background:rgba(8,9,15,.85);border:1px solid var(--line);color:#fff;transition:.2s ease;
}
.field textarea{resize:vertical;min-height:92px}
.field input::placeholder,.field textarea::placeholder{color:#66738c}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--cyan);outline:none;box-shadow:0 0 0 3px rgba(0,240,255,.16)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-note{font-size:12.6px;color:var(--muted-2);margin-top:14px}
.form-ok{
  padding:16px 18px;border-radius:var(--r-m);margin-bottom:18px;
  background:rgba(61,220,151,.12);border:1px solid rgba(61,220,151,.5);
  color:#c8f7e2;font-size:14.5px;
}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:#060810;padding:56px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:34px;margin-bottom:36px}
.footer-grid h4{font-size:14px;letter-spacing:1.2px;text-transform:uppercase;color:var(--muted-2);margin-bottom:14px}
.footer-grid p{font-size:14px}
.footer-grid ul li{margin-bottom:10px}
.footer-grid ul a{color:var(--muted);font-size:14.3px}
.footer-grid ul a:hover{color:var(--cyan)}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;font-weight:750}
.footer-brand .logo-mark{width:38px;height:38px;font-size:17px}
.pay-badges{display:flex;flex-wrap:wrap;gap:9px;margin-top:14px}
.pay-badges span{padding:7px 13px;border-radius:8px;font-size:12.4px;font-weight:700;border:1px solid var(--line);color:var(--muted)}
.copyright{
  border-top:1px solid var(--line);padding-top:22px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:var(--muted-2);
}

/* ---------- FAB ---------- */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:50;
  min-width:56px;min-height:56px;padding:0 18px 0 14px;
  display:flex;align-items:center;gap:10px;
  border-radius:999px;cursor:pointer;border:0;
  background:rgba(0,0,0,.6);backdrop-filter:blur(10px);
  color:#fff;font-weight:700;font-size:13.5px;
  opacity:.65;transition:.28s ease;
  box-shadow:0 0 15px rgba(0,240,255,.5);
}
.fab::before{
  content:"";position:absolute;inset:-2px;border-radius:999px;z-index:-1;
  background:linear-gradient(120deg,var(--cyan),var(--blue),var(--cyan));
  background-size:220% 220%;animation:flow 4s linear infinite;
}
.fab::after{content:"";position:absolute;inset:0;border-radius:999px;background:rgba(6,8,16,.92);z-index:-1}
@keyframes flow{0%{background-position:0% 50%}100%{background-position:220% 50%}}
.fab:hover{opacity:1;box-shadow:0 0 26px rgba(0,240,255,.7);transform:scale(1.05)}
.fab:active{transform:scale(.95)}
.fab .fab-ic{font-size:20px;filter:drop-shadow(0 0 6px rgba(0,240,255,.8))}
.fab .fab-dot{position:absolute;top:6px;right:8px;width:9px;height:9px;border-radius:50%;background:var(--bad);animation:blip 1.6s infinite}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero-grid,.compare-wrap,.faq-wrap,.signup-grid,.voices{grid-template-columns:1fr}
  .metric-board{grid-template-columns:1fr 1fr}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
  .alert-grid,.fix{grid-template-columns:1fr 1fr}
  .sec-head.split{grid-template-columns:1fr}
  .faq-aside{position:static}
  .logo-txt{max-width:200px}
}
@media (max-width:768px){
  .nav{flex-wrap:wrap;padding:12px 0;min-height:0;gap:12px}
  .logo{order:1}
  .nav-cta{order:2;margin-left:auto}
  .nav-links{order:3;width:100%;margin-left:0}
  .matrix{grid-template-columns:1fr}
  .alert-grid,.fix{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .container{width:calc(100% - 32px)}
  .metric-board{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--line)}
  .metric:last-child{border-bottom:0}
  .count{grid-template-columns:repeat(4,1fr);gap:6px}
  .logo-txt small{display:none}
  .btn{width:100%}
  .hero-actions{flex-direction:column}
  .remind{flex-direction:column}
  .fab{bottom:84px;left:12px;padding:0 15px 0 12px}
  table.cmp{font-size:13.2px}
  table.cmp th,table.cmp td{padding:11px 8px}
}

/* roulang page: category1 */
:root{
  --bg:#121212;
  --bg-2:#1c1c1e;
  --bg-3:#232326;
  --gold:#c5a059;
  --gold-bright:#ffbf00;
  --gold-soft:#d4ac0d;
  --text:#f5f5f7;
  --muted:#a8a8ad;
  --line:#2e2e33;
  --green:#3ddc84;
  --radius:14px;
  --radius-sm:9px;
  --shadow:0 12px 34px rgba(0,0,0,.45);
  --glow:0 0 18px rgba(255,191,0,.22);
  --container:1160px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Be Vietnam Pro","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--gold);text-decoration:none;transition:color .2s}
a:hover{color:var(--gold-bright)}
button,input{font-family:inherit;font-size:1rem}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ===== Header ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(18,18,18,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 20px rgba(0,0,0,.5);
}
.nav{display:flex;align-items:center;gap:28px;min-height:72px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:40px;height:40px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--gold) 0%,var(--gold-bright) 100%);
  color:#121212;font-size:1.25rem;border-radius:10px;
  box-shadow:var(--glow);
}
.logo-txt{display:flex;flex-direction:column;line-height:1.2;font-weight:800;color:var(--text);font-size:.98rem}
.logo-txt small{font-weight:500;color:var(--gold-soft);font-size:.68rem;margin-top:2px}
.nav-links{display:flex;gap:4px;margin-left:auto}
.nav-links a{
  color:var(--muted);font-size:.9rem;font-weight:600;
  padding:8px 14px;border-radius:8px;position:relative;transition:color .2s,background .2s;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--gold-bright)}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:linear-gradient(90deg,var(--gold),var(--gold-bright));
  border-radius:2px;box-shadow:0 0 8px rgba(255,191,0,.6);
}
.nav-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn-ghost{
  color:var(--text);font-weight:600;font-size:.88rem;padding:9px 14px;border-radius:8px;
  border:1px solid transparent;transition:border-color .2s,color .2s;
}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-bright)}
.btn-solid{
  background:linear-gradient(135deg,var(--gold) 0%,var(--gold-bright) 100%);
  color:#121212;font-weight:800;font-size:.88rem;padding:10px 18px;border-radius:8px;
  box-shadow:var(--glow);transition:transform .2s,box-shadow .2s;
}
.btn-solid:hover{transform:translateY(-2px);box-shadow:0 0 26px rgba(255,191,0,.4);color:#121212}
.btn-solid:active{transform:translateY(0) scale(.97)}

/* ===== Hero ===== */
.hero{
  padding:150px 0 80px;
  background:
    linear-gradient(180deg,rgba(18,18,18,.88) 0%,rgba(18,18,18,.96) 70%,var(--bg) 100%),
    url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
  position:relative;
}
.hero-grid{
  display:grid;
  grid-template-columns:1fr minmax(280px,380px) 1fr;
  gap:40px;align-items:center;
}
.hero-side{display:flex;flex-direction:column;gap:22px}
.hero-side.right{text-align:left}
.hero-point h3{font-size:1.02rem;color:var(--gold-bright);margin-bottom:4px;display:flex;align-items:center;gap:8px}
.hero-point h3 i{font-size:.9rem}
.hero-point p{font-size:.88rem;color:var(--muted)}
.hero-stage{
  position:relative;border-radius:26px;overflow:hidden;
  border:1px solid rgba(197,160,89,.5);
  box-shadow:0 0 0 6px rgba(197,160,89,.08),0 24px 60px rgba(0,0,0,.6),var(--glow);
}
.hero-stage img{width:100%;aspect-ratio:3/4;object-fit:cover}
.hero-stage::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(18,18,18,.85) 100%);
}
.stage-badge{
  position:absolute;top:14px;left:14px;z-index:2;
  background:rgba(18,18,18,.8);border:1px solid var(--gold);
  color:var(--gold-bright);font-size:.72rem;font-weight:800;letter-spacing:.06em;
  padding:6px 12px;border-radius:999px;display:inline-flex;align-items:center;gap:6px;
}
.stage-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green);animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.stage-caption{position:absolute;left:18px;right:18px;bottom:16px;z-index:2}
.stage-caption b{font-size:1rem}
.stage-caption span{display:block;font-size:.78rem;color:var(--muted)}
.hero-head{grid-column:1 / -1;text-align:center;max-width:820px;margin:0 auto 8px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(197,160,89,.12);border:1px solid rgba(197,160,89,.4);
  color:var(--gold-bright);font-size:.78rem;font-weight:700;letter-spacing:.05em;
  padding:7px 16px;border-radius:999px;margin-bottom:18px;
}
.hero h1{
  font-size:clamp(1.7rem,3.6vw,2.7rem);line-height:1.25;font-weight:800;
  background:linear-gradient(120deg,#fff 30%,var(--gold-bright) 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:14px;
}
.hero-sub{color:var(--muted);font-size:1.02rem;max-width:660px;margin:0 auto}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:26px}
.btn-lg{
  display:inline-flex;align-items:center;gap:10px;
  padding:15px 30px;border-radius:12px;font-weight:800;font-size:1rem;
  transition:transform .2s,box-shadow .2s;
}
.btn-gold{
  background:linear-gradient(135deg,var(--gold),var(--gold-bright));color:#121212;
  box-shadow:0 8px 26px rgba(255,191,0,.3);
}
.btn-gold:hover{transform:translateY(-3px);box-shadow:0 12px 34px rgba(255,191,0,.45);color:#121212}
.btn-line{border:1px solid var(--gold);color:var(--gold-bright);background:rgba(18,18,18,.5)}
.btn-line:hover{background:rgba(197,160,89,.14);transform:translateY(-3px)}
.hero-note{margin-top:14px;font-size:.8rem;color:var(--muted);text-align:center}
.hero-note i{color:var(--green);margin-right:5px}

/* ===== Metrics ===== */
.metrics{padding:56px 0;border-bottom:1px solid var(--line)}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.metric{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;transition:border-color .25s,transform .25s;
}
.metric:hover{border-color:var(--gold);transform:translateY(-4px)}
.metric b{
  display:block;font-size:1.9rem;font-weight:800;color:var(--gold-bright);line-height:1.15;
}
.metric span{font-size:.85rem;color:var(--muted)}
.metric .tag{
  display:inline-block;margin-top:10px;font-size:.68rem;font-weight:700;
  color:var(--green);background:rgba(61,220,132,.1);border:1px solid rgba(61,220,132,.3);
  padding:3px 9px;border-radius:999px;
}

/* ===== Sections chung ===== */
.section{padding:80px 0}
.section-alt{background:var(--bg-2)}
.sec-head{max-width:640px;margin-bottom:44px}
.sec-kicker{
  font-size:.76rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;
  color:var(--gold);margin-bottom:10px;display:flex;align-items:center;gap:10px;
}
.sec-kicker::before{content:"";width:26px;height:2px;background:var(--gold-bright);box-shadow:0 0 8px rgba(255,191,0,.6)}
.sec-head h2{font-size:clamp(1.4rem,2.6vw,2rem);font-weight:800;line-height:1.3;margin-bottom:10px}
.sec-head p{color:var(--muted);font-size:.96rem}

/* ===== Feature matrix ===== */
.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feat{
  background:var(--bg-3);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;transition:transform .25s,border-color .25s,box-shadow .25s;
}
.section-alt .feat{background:var(--bg)}
.feat:hover{transform:translateY(-5px);border-color:var(--gold);box-shadow:var(--shadow)}
.feat-ico{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
  background:rgba(197,160,89,.12);border:1px solid rgba(197,160,89,.4);
  color:var(--gold-bright);font-size:1.15rem;margin-bottom:16px;
}
.feat h3{font-size:1.05rem;margin-bottom:8px}
.feat p{font-size:.88rem;color:var(--muted)}

/* ===== Media split ===== */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.split-img{border-radius:var(--radius);overflow:hidden;border:1px solid rgba(197,160,89,.35);box-shadow:var(--shadow)}
.split-img img{width:100%;aspect-ratio:4/3;object-fit:cover}
.step-list{list-style:none;display:flex;flex-direction:column;gap:0}
.step{display:flex;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}
.step:last-child{border-bottom:0}
.step-num{
  flex-shrink:0;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--gold);color:var(--gold-bright);font-weight:800;font-size:.92rem;
  background:rgba(197,160,89,.08);
}
.step h4{font-size:.98rem;margin-bottom:4px}
.step p{font-size:.86rem;color:var(--muted)}

/* ===== Compare table ===== */
.compare{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  background:var(--bg-2);
}
.compare-row{
  display:grid;grid-template-columns:1.4fr 1fr 1fr;
  border-bottom:1px solid var(--line);
}
.compare-row:last-child{border-bottom:0}
.compare-row > div{padding:16px 22px;font-size:.9rem}
.compare-row .c-label{color:var(--text);font-weight:600}
.compare-row .c-free{color:var(--muted)}
.compare-row .c-vip{color:var(--gold-bright);font-weight:700;background:rgba(197,160,89,.06)}
.compare-head{background:var(--bg-3)}
.compare-head > div{font-size:.8rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.compare-head .c-vip{color:var(--gold-bright)}
.ok{color:var(--green)}
.no{color:#777}

/* ===== FAQ ===== */
.faq-wrap{max-width:820px}
.faq{border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:14px;background:var(--bg-2);overflow:hidden;transition:border-color .25s}
.faq[open]{border-color:var(--gold)}
.faq summary{
  cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:18px 22px;font-weight:700;font-size:.98rem;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;color:var(--gold-bright);line-height:1;transition:transform .25s}
.faq[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 22px 20px;color:var(--muted);font-size:.9rem}

/* ===== CTA form ===== */
.cta{
  background:
    linear-gradient(120deg,rgba(18,18,18,.93),rgba(28,28,30,.9)),
    url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:84px 0;text-align:center;
}
.cta h2{font-size:clamp(1.5rem,2.8vw,2.1rem);font-weight:800;margin-bottom:12px}
.cta p{color:var(--muted);max-width:600px;margin:0 auto 30px}
.cta-form{
  display:flex;gap:12px;max-width:560px;margin:0 auto;flex-wrap:wrap;justify-content:center;
}
.cta-form input{
  flex:1;min-width:240px;padding:15px 18px;border-radius:12px;
  border:1px solid var(--line);background:rgba(18,18,18,.75);color:var(--text);
  outline:none;transition:border-color .2s,box-shadow .2s;
}
.cta-form input::placeholder{color:#7a7a80}
.cta-form input:focus{border-color:var(--gold-bright);box-shadow:0 0 0 3px rgba(255,191,0,.15)}
.cta-form button{
  border:0;cursor:pointer;padding:15px 28px;border-radius:12px;font-weight:800;
  background:linear-gradient(135deg,var(--gold),var(--gold-bright));color:#121212;
  box-shadow:0 8px 26px rgba(255,191,0,.3);transition:transform .2s,box-shadow .2s;
}
.cta-form button:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(255,191,0,.45)}
.cta-form button:active{transform:scale(.97)}
.cta-mini{margin-top:16px;font-size:.78rem;color:var(--muted)}
.cta-mini i{color:var(--green);margin-right:5px}

/* ===== Footer ===== */
.site-footer{background:#0d0d0e;border-top:1px solid var(--line);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand .logo-txt{font-size:1rem}
.footer-brand p{color:var(--muted);font-size:.87rem;margin-top:14px;max-width:340px}
.footer-col h4{font-size:.82rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--gold);margin-bottom:16px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col a{color:var(--muted);font-size:.88rem}
.footer-col a:hover{color:var(--gold-bright)}
.footer-quote{
  display:flex;align-items:center;gap:14px;margin-top:20px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 18px;
}
.footer-quote .avatar{
  width:42px;height:42px;border-radius:50%;flex-shrink:0;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--gold),var(--gold-bright));color:#121212;font-weight:800;font-size:.88rem;
}
.footer-quote b{display:block;font-size:.88rem}
.footer-quote span{font-size:.76rem;color:var(--muted)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:.78rem;color:#7a7a80;
}
.footer-badges{display:flex;gap:10px;flex-wrap:wrap}
.footer-badges span{
  border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-size:.72rem;color:var(--muted);
}

/* ===== FAB ===== */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:90;
  display:flex;align-items:center;gap:10px;
  min-width:52px;min-height:52px;padding:12px 18px;border-radius:999px;
  background:rgba(18,18,18,.7);backdrop-filter:blur(8px);
  border:1px solid var(--gold-bright);
  color:var(--gold-bright);font-weight:800;font-size:.85rem;
  box-shadow:0 0 16px rgba(255,191,0,.35);
  opacity:.72;transition:opacity .25s,transform .25s,box-shadow .25s;
}
.fab:hover{opacity:1;transform:scale(1.07);box-shadow:0 0 28px rgba(255,191,0,.55);color:var(--gold-bright)}
.fab:active{transform:scale(.95)}
.fab .fab-dot{
  position:absolute;top:-3px;right:-3px;width:12px;height:12px;border-radius:50%;
  background:#e53935;box-shadow:0 0 8px rgba(229,57,53,.8);animation:pulse 1.4s infinite;
}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr 1fr;gap:28px}
  .hero-stage{grid-column:1 / -1;max-width:380px;margin:0 auto}
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .matrix{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .nav{flex-wrap:wrap;padding:10px 0;min-height:0;gap:10px}
  .nav-links{order:3;width:100%;overflow-x:auto;padding-bottom:6px;margin-left:0}
  .nav-links a{white-space:nowrap;font-size:.84rem}
  .nav-cta{margin-left:auto}
  .logo-txt{font-size:.85rem}
  .hero{padding-top:170px}
  .hero-grid{grid-template-columns:1fr}
  .hero-side{flex-direction:row;flex-wrap:wrap;gap:16px}
  .hero-point{flex:1 1 45%}
  .section{padding:60px 0}
  .compare-row > div{padding:13px 14px;font-size:.82rem}
}
@media (max-width:520px){
  .metrics-grid{grid-template-columns:1fr 1fr;gap:12px}
  .metric b{font-size:1.5rem}
  .matrix{grid-template-columns:1fr}
  .hero-point{flex:1 1 100%}
  .compare-row{grid-template-columns:1.2fr 1fr 1fr}
  .btn-lg{width:100%;justify-content:center}
  .footer-grid{grid-template-columns:1fr}
  .fab span.fab-txt{display:none}
  .fab{padding:0;width:52px;height:52px;justify-content:center}
}