/* roulang page: index */
:root{
  --bg-0:#030712;
  --bg-1:#081229;
  --bg-2:#0b1a38;
  --bg-3:#0f2350;
  --line:rgba(96,165,250,.16);
  --line-strong:rgba(56,189,248,.42);
  --accent:#2563eb;
  --accent-2:#38bdf8;
  --accent-3:#60a5fa;
  --text:#f8fafc;
  --muted:#94a3b8;
  --dim:#64748b;
  --ok:#22d3ee;
  --warn:#f59e0b;
  --radius-xs:8px;
  --radius-s:12px;
  --radius:18px;
  --radius-l:26px;
  --shadow:0 20px 50px rgba(3,7,18,.65);
  --shadow-soft:0 10px 30px rgba(3,7,18,.45);
  --glow:0 0 26px rgba(37,99,235,.42);
  --glow-2:0 0 22px rgba(56,189,248,.35);
  --maxw:1200px;
  --gap:clamp(18px,2.4vw,30px);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  font-size:16px;
  line-height:1.65;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px;border-radius:6px}
::selection{background:rgba(37,99,235,.5);color:#fff}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:clamp(52px,6.5vw,96px) 0;position:relative}
.section--alt{background:linear-gradient(180deg,var(--bg-1) 0%,var(--bg-0) 100%)}
.section--deep{background:radial-gradient(1200px 500px at 80% 0%,rgba(37,99,235,.18),transparent 65%),var(--bg-1)}
.section--line{border-top:1px solid var(--line)}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent-2);
  padding:7px 14px;border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(37,99,235,.12);
  margin-bottom:16px;
}
.section-head{max-width:760px;margin-bottom:clamp(26px,3vw,44px)}
.section-head--split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:var(--gap);max-width:none;align-items:end}
.section-title{font-size:clamp(24px,3vw,36px);font-weight:800}
.section-sub{color:var(--muted);font-size:15.5px;margin-top:14px;line-height:1.7}
.text-accent{color:var(--accent-2)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:999px;
  font-size:14.5px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,color .25s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent) 0%,var(--accent-2) 100%);
  color:#031024;
  box-shadow:var(--glow);
  font-weight:700;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(56,189,248,.6)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-ghost{
  background:rgba(8,18,41,.6);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--accent-2);color:var(--accent-2);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0) scale(.98)}
.btn-block{width:100%}

.tag{
  display:inline-block;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  padding:5px 11px;border-radius:999px;color:var(--accent-3);
  background:rgba(96,165,250,.12);border:1px solid var(--line);
}
.tag--warn{color:#fbbf24;background:rgba(245,158,11,.12);border-color:rgba(245,158,11,.3)}
.tag--ok{color:#67e8f9;background:rgba(34,211,238,.12);border-color:rgba(34,211,238,.3)}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(3,7,18,.82);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:22px;min-height:70px}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#031024;font-size:17px;box-shadow:var(--glow-2);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:15px;font-weight:800;letter-spacing:-.01em}
.logo-text span{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{
  font-size:14px;font-weight:500;color:var(--muted);
  padding:9px 14px;border-radius:999px;
}
.nav-links a:hover{color:var(--text);background:rgba(96,165,250,.1)}
.nav-links a.active{color:var(--accent-2);background:rgba(37,99,235,.16);border:1px solid var(--line-strong)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-login{font-size:13.5px;font-weight:600;color:var(--muted);padding:9px 10px;border-radius:999px}
.nav-login:hover{color:var(--accent-2)}
.nav-signup{padding:10px 18px;font-size:13.5px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);color:var(--text);
  align-items:center;justify-content:center;font-size:17px;
  background:rgba(8,18,41,.7);
}
.nav-drawer{
  display:none;border-top:1px solid var(--line);
  background:rgba(3,7,18,.97);padding:14px 0 20px;
}
.nav-drawer.open{display:block}
.nav-drawer a{
  display:block;padding:13px 20px;font-size:15px;color:var(--muted);
  border-bottom:1px solid rgba(96,165,250,.08);
}
.nav-drawer a:hover,.nav-drawer a.active{color:var(--accent-2)}

/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;
  padding:clamp(48px,7vw,96px) 0 clamp(34px,4vw,54px);
  background:
    linear-gradient(115deg,rgba(3,7,18,.94) 0%,rgba(3,7,18,.82) 45%,rgba(8,18,41,.72) 100%),
    url('/assets/images/27d4884646cdf31e.jpg') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(96,165,250,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(96,165,250,.055) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(circle at 70% 30%,#000 10%,transparent 72%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(24px,3.5vw,54px);align-items:start}
.hero-title{font-size:clamp(28px,4.4vw,50px);font-weight:800;line-height:1.16;letter-spacing:-.02em}
.hero-title .hl{background:linear-gradient(135deg,#60a5fa,#22d3ee);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{color:#cbd5e1;font-size:16px;margin-top:20px;max-width:640px;line-height:1.72}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-note{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;font-size:13px;color:var(--muted)}
.hero-note span{display:inline-flex;align-items:center;gap:7px}
.hero-note i{color:var(--accent-2)}

.panel{
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  background:linear-gradient(160deg,rgba(11,26,56,.88),rgba(8,18,41,.72));
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  padding:clamp(20px,2.4vw,28px);
}
.panel-title{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-2);font-weight:700;margin-bottom:16px}
.param-list li{
  display:flex;align-items:baseline;justify-content:space-between;gap:14px;
  padding:11px 0;border-bottom:1px dashed rgba(96,165,250,.18);font-size:14px;
}
.param-list li:last-child{border-bottom:0}
.param-list span{color:var(--muted)}
.param-list b{font-weight:700;color:var(--text);font-variant-numeric:tabular-nums}
.panel-foot{margin-top:18px;font-size:12.5px;color:var(--dim);line-height:1.6}

/* ===== Metric strip ===== */
.metric-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;background:var(--line);margin-top:clamp(30px,4vw,46px);
}
.metric{background:rgba(8,18,41,.9);padding:22px 20px}
.metric b{display:block;font-size:clamp(22px,2.6vw,30px);font-weight:800;color:var(--accent-2);font-variant-numeric:tabular-nums}
.metric span{display:block;font-size:12.5px;color:var(--muted);margin-top:6px;line-height:1.5}

/* ===== Directory ===== */
.dir-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.dir-item{
  display:flex;gap:16px;align-items:flex-start;
  padding:20px;border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(8,18,41,.55);
  transition:border-color .25s ease,transform .25s ease,background .25s ease;
}
.dir-item:hover{border-color:var(--line-strong);transform:translateY(-3px);background:rgba(11,26,56,.8)}
.dir-num{
  flex-shrink:0;width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  font-size:13px;font-weight:800;color:var(--accent-2);
  background:rgba(37,99,235,.16);border:1px solid var(--line-strong);
  font-variant-numeric:tabular-nums;
}
.dir-item h3{font-size:15.5px;font-weight:700}
.dir-item p{font-size:13.5px;color:var(--muted);margin-top:7px;line-height:1.6}

/* ===== Value ===== */
.value-layout{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(24px,3.4vw,52px);align-items:start}
.value-list{display:flex;flex-direction:column;gap:0}
.value-row{
  display:grid;grid-template-columns:44px minmax(0,1fr);gap:18px;
  padding:22px 0;border-bottom:1px solid var(--line);
}
.value-row:first-child{padding-top:0}
.value-row i{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:rgba(37,99,235,.16);border:1px solid var(--line-strong);color:var(--accent-2);font-size:16px;
}
.value-row h3{font-size:16.5px;font-weight:700}
.value-row p{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.68}
.value-media{
  border-radius:var(--radius-l);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);position:relative;
}
.value-media img{width:100%;height:100%;min-height:280px;object-fit:cover}
.value-media figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:18px 20px;
  background:linear-gradient(180deg,transparent,rgba(3,7,18,.94));
  font-size:13px;color:#cbd5e1;
}

/* ===== Charts ===== */
.chart-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:var(--gap)}
.chart-card{
  border:1px solid var(--line);border-radius:var(--radius-l);
  background:linear-gradient(160deg,rgba(11,26,56,.8),rgba(8,18,41,.6));
  padding:clamp(20px,2.4vw,28px);
}
.chart-card h3{font-size:17px;font-weight:700}
.chart-card > p{font-size:14px;color:var(--muted);margin-top:10px;line-height:1.68}
.road{
  display:grid;grid-template-columns:repeat(8,1fr);gap:6px;margin-top:20px;
}
.road i{
  aspect-ratio:1/1;border-radius:7px;display:block;
  border:1px solid rgba(96,165,250,.2);
  background:rgba(3,7,18,.6);
}
.road i.b{background:linear-gradient(135deg,#dc2626,#b91c1c);border-color:rgba(248,113,113,.5)}
.road i.p{background:linear-gradient(135deg,#2563eb,#1d4ed8);border-color:rgba(96,165,250,.55)}
.road i.t{background:linear-gradient(135deg,#22d3ee,#0e7490);border-color:rgba(34,211,238,.5)}
.legend{display:flex;flex-wrap:wrap;gap:16px;margin-top:16px;font-size:12.5px;color:var(--muted)}
.legend span{display:inline-flex;align-items:center;gap:7px}
.dot{width:12px;height:12px;border-radius:4px;display:inline-block}
.dot.b{background:#dc2626}
.dot.p{background:#2563eb}
.dot.t{background:#22d3ee}

.bars{margin-top:22px;display:flex;flex-direction:column;gap:16px}
.bar-row span{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin-bottom:7px}
.bar-row span b{color:var(--text);font-variant-numeric:tabular-nums}
.bar{height:9px;border-radius:999px;background:rgba(96,165,250,.14);overflow:hidden}
.bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent-2));box-shadow:0 0 14px rgba(56,189,248,.5)}
.bar i.amber{background:linear-gradient(90deg,#b45309,#f59e0b);box-shadow:0 0 14px rgba(245,158,11,.45)}

/* ===== Patterns ===== */
.pattern-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.pattern{
  border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;background:rgba(8,18,41,.6);
  transition:border-color .25s ease,transform .25s ease;
}
.pattern:hover{border-color:var(--line-strong);transform:translateY(-4px)}
.pattern h3{font-size:16.5px;font-weight:700;margin-bottom:12px}
.pattern p{font-size:14px;color:var(--muted);line-height:1.7}
.pattern ul{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.pattern li{font-size:13.5px;color:#cbd5e1;padding-left:20px;position:relative;line-height:1.6}
.pattern li::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:3px;background:var(--accent-2);opacity:.85}

/* ===== Compare table ===== */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:rgba(8,18,41,.55)}
table{width:100%;border-collapse:collapse;min-width:720px}
thead th{
  text-align:left;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);
  padding:16px 18px;border-bottom:1px solid var(--line);font-weight:700;white-space:nowrap;
}
tbody td{padding:16px 18px;font-size:14px;border-bottom:1px solid rgba(96,165,250,.1);color:#cbd5e1;vertical-align:top}
tbody tr:last-child td{border-bottom:0}
tbody td:first-child{color:var(--text);font-weight:600}
tbody tr:hover td{background:rgba(37,99,235,.08)}
.col-hi{background:rgba(37,99,235,.14)}
thead th.col-hi{color:var(--accent-2)}

/* ===== Steps ===== */
.steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.step{
  border:1px solid var(--line);border-radius:var(--radius);padding:22px 18px;
  background:linear-gradient(180deg,rgba(11,26,56,.75),rgba(8,18,41,.55));
  position:relative;
}
.step b{display:block;font-size:12px;letter-spacing:.14em;color:var(--accent-2);font-weight:800;margin-bottom:12px}
.step h3{font-size:15px;font-weight:700}
.step p{font-size:13.5px;color:var(--muted);margin-top:9px;line-height:1.62}

/* ===== Matrix ===== */
.matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.matrix-item{
  padding:22px;border-radius:var(--radius);border:1px solid var(--line);
  background:rgba(8,18,41,.6);
}
.matrix-item h3{font-size:15.5px;font-weight:700;display:flex;align-items:center;gap:10px}
.matrix-item h3 i{color:var(--accent-2);font-size:14px}
.matrix-item p{font-size:13.5px;color:var(--muted);margin-top:11px;line-height:1.65}
.matrix-item .tag{margin-top:14px}

/* ===== Resources ===== */
.res-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.res-card{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  background:rgba(8,18,41,.6);display:flex;flex-direction:column;
  transition:transform .25s ease,border-color .25s ease;
}
.res-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.res-card img{height:170px;width:100%;object-fit:cover;opacity:.92}
.res-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.res-body h3{font-size:15.5px;font-weight:700}
.res-body p{font-size:13.5px;color:var(--muted);line-height:1.65}
.res-body .tag{align-self:flex-start}

/* ===== News ===== */
.news-layout{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:var(--gap)}
.news-list{display:flex;flex-direction:column;gap:14px}
.news-card{
  padding:22px;border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(8,18,41,.55);transition:border-color .25s ease,transform .25s ease;
}
.news-card:hover{border-color:var(--line-strong);transform:translateX(4px)}
.news-card h3{font-size:16.5px;font-weight:700;line-height:1.45}
.news-card p{font-size:13.8px;color:var(--muted);margin-top:9px;line-height:1.65}
.news-meta{display:flex;align-items:center;gap:14px;margin-top:14px;font-size:12.5px;color:var(--dim)}
.news-side{
  border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;background:linear-gradient(170deg,rgba(11,26,56,.8),rgba(8,18,41,.55));
  align-self:start;
}
.news-side h3{font-size:15px;font-weight:700;letter-spacing:.02em}
.news-side ul{margin-top:16px;display:flex;flex-direction:column;gap:0}
.news-side li{padding:14px 0;border-bottom:1px dashed rgba(96,165,250,.16)}
.news-side li:last-child{border-bottom:0}
.news-side a{font-size:14px;font-weight:600;display:block;line-height:1.5}
.news-side a:hover{color:var(--accent-2)}
.news-side time{display:block;font-size:12px;color:var(--dim);margin-top:7px}
.empty{
  padding:34px 24px;border:1px dashed var(--line-strong);border-radius:var(--radius);
  text-align:left;color:var(--muted);font-size:14.5px;background:rgba(8,18,41,.4);
}

/* ===== Testimonials ===== */
.quote-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.quote{
  padding:24px;border-radius:var(--radius);border:1px solid var(--line);
  background:rgba(8,18,41,.6);
}
.stars{color:#fbbf24;font-size:13px;letter-spacing:2px}
.quote p{font-size:14px;color:#cbd5e1;margin-top:14px;line-height:1.7}
.quote footer{display:flex;align-items:center;gap:12px;margin-top:18px}
.avatar{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  font-size:13px;font-weight:700;color:#031024;
  background:linear-gradient(135deg,var(--accent-2),var(--accent));
}
.quote footer b{display:block;font-size:13.5px;font-weight:700}
.quote footer span{display:block;font-size:12px;color:var(--dim)}

/* ===== Trust ===== */
.trust-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.trust-item{
  padding:22px;border-radius:var(--radius);border:1px solid var(--line);
  background:rgba(8,18,41,.55);
}
.trust-item i{font-size:18px;color:var(--accent-2)}
.trust-item h3{font-size:15px;font-weight:700;margin-top:14px}
.trust-item p{font-size:13.5px;color:var(--muted);margin-top:9px;line-height:1.62}

/* ===== FAQ ===== */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:rgba(8,18,41,.55);overflow:hidden}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:19px 22px;text-align:left;font-size:15px;font-weight:600;color:var(--text);
}
.faq-q:hover{color:var(--accent-2)}
.faq-q i{transition:transform .3s ease;color:var(--accent-2);font-size:13px;flex-shrink:0}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s ease}
.faq-a p{padding:0 22px 20px;font-size:14px;color:var(--muted);line-height:1.72}

/* ===== Form ===== */
.form-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);gap:clamp(24px,3.4vw,52px);align-items:start}
.form-card{
  border:1px solid var(--line);border-radius:var(--radius-l);
  padding:clamp(22px,2.6vw,32px);
  background:linear-gradient(160deg,rgba(11,26,56,.9),rgba(8,18,41,.7));
  box-shadow:var(--shadow);
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:#cbd5e1;margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;padding:13px 15px;border-radius:var(--radius-s);
  background:rgba(3,7,18,.72);border:1px solid var(--line);color:var(--text);
  font-size:14px;transition:border-color .22s ease,box-shadow .22s ease;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent-2);box-shadow:0 0 0 3px rgba(56,189,248,.16);
}
.field textarea{min-height:104px;resize:vertical}
.form-hint{font-size:12.5px;color:var(--dim);margin-top:14px;line-height:1.6}
.form-side li{display:flex;gap:13px;padding:15px 0;border-bottom:1px solid var(--line);font-size:14px;color:#cbd5e1}
.form-side li:last-child{border-bottom:0}
.form-side li i{color:var(--accent-2);margin-top:5px;font-size:13px}

/* ===== Footer ===== */
.site-footer{
  background:linear-gradient(180deg,var(--bg-1) 0%,#020509 100%);
  border-top:1px solid var(--line);
  padding:clamp(44px,5vw,72px) 0 0;
}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));gap:var(--gap)}
.footer-brand p{font-size:13.8px;color:var(--muted);margin-top:16px;line-height:1.7;max-width:340px}
.footer-col h4{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-2);font-weight:700;margin-bottom:16px}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:13.8px;color:var(--muted)}
.footer-col a:hover{color:var(--accent-2)}
.footer-pay{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}
.pay-badge{
  font-size:11.5px;font-weight:600;padding:6px 12px;border-radius:8px;
  border:1px solid var(--line);background:rgba(37,99,235,.12);color:#cbd5e1;
}
.footer-bottom{
  margin-top:clamp(34px,4vw,52px);border-top:1px solid var(--line);
  padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:12.8px;color:var(--dim);
}
.footer-bottom .age{
  display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:999px;
  border:1px solid var(--line-strong);color:var(--accent-2);font-weight:700;font-size:11.5px;
}

/* ===== FAB ===== */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:90;
  width:56px;height:56px;border-radius:999px;display:grid;place-items:center;
  background:linear-gradient(rgba(7,10,22,.88),rgba(7,10,22,.88)) padding-box,
             linear-gradient(135deg,#2563eb,#22d3ee) border-box;
  border:2px solid transparent;
  color:#7dd3fc;font-size:19px;
  box-shadow:0 0 22px rgba(6,182,212,.45);
  opacity:.8;
  animation:fabPulse 3.2s ease-in-out infinite;
  transition:transform .25s ease,opacity .25s ease,box-shadow .25s ease,color .25s ease;
}
.fab:hover{opacity:1;transform:scale(1.1);color:#e0f2fe;box-shadow:0 0 32px rgba(6,182,212,.7)}
.fab:active{transform:scale(.94)}
.fab-dot{
  position:absolute;top:4px;right:4px;width:11px;height:11px;border-radius:50%;
  background:#f43f5e;box-shadow:0 0 10px rgba(244,63,94,.9);
  animation:dotBlink 1.5s ease-in-out infinite;
}
@keyframes fabPulse{0%,100%{box-shadow:0 0 18px rgba(6,182,212,.35)}50%{box-shadow:0 0 30px rgba(6,182,212,.7)}}
@keyframes dotBlink{0%,100%{opacity:1}50%{opacity:.35}}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions{margin-left:auto}
  .hero-inner{grid-template-columns:1fr}
  .value-layout{grid-template-columns:1fr}
  .metric-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pattern-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(3,minmax(0,1fr))}
  .res-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .quote-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .trust-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-layout{grid-template-columns:1fr}
  .chart-grid{grid-template-columns:1fr}
  .form-layout{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .section-head--split{grid-template-columns:1fr}
}
@media (max-width:768px){
  .dir-grid{grid-template-columns:1fr}
  .matrix{grid-template-columns:1fr}
  .pattern-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .res-grid{grid-template-columns:1fr}
  .quote-grid{grid-template-columns:1fr}
  .trust-grid{grid-template-columns:1fr}
  .hero-note{gap:12px}
  .logo-text span{display:none}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .metric-strip{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .nav-signup{padding:9px 14px;font-size:12.5px}
  .nav-login{display:inline-block;font-size:12.5px;padding:9px 6px}
  .fab{bottom:88px;left:12px;width:52px;height:52px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: article */
/* ===== Design system dùng chung ===== */
:root{
  --bg-0:#030712;
  --bg-1:#081229;
  --bg-2:#0b1a38;
  --bg-3:#0f2350;
  --line:rgba(96,165,250,.16);
  --line-strong:rgba(56,189,248,.42);
  --accent:#2563eb;
  --accent-2:#38bdf8;
  --accent-3:#60a5fa;
  --text:#f8fafc;
  --muted:#94a3b8;
  --dim:#64748b;
  --ok:#22d3ee;
  --warn:#f59e0b;
  --radius-xs:8px;
  --radius-s:12px;
  --radius:18px;
  --radius-l:26px;
  --shadow:0 20px 50px rgba(3,7,18,.65);
  --shadow-soft:0 10px 30px rgba(3,7,18,.45);
  --glow:0 0 26px rgba(37,99,235,.42);
  --glow-2:0 0 22px rgba(56,189,248,.35);
  --maxw:1200px;
  --gap:clamp(18px,2.4vw,30px);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  font-size:16px;
  line-height:1.65;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;line-height:1.28;font-weight:700}
p{margin:0}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:clamp(52px,6.5vw,96px) 0;position:relative}
.section--alt{background:linear-gradient(180deg,var(--bg-1) 0%,var(--bg-0) 100%)}
.section--deep{background:radial-gradient(1200px 500px at 80% 0%,rgba(37,99,235,.18),transparent 65%),var(--bg-1)}
.section--line{border-top:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent-2);
  padding:7px 14px;border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(37,99,235,.12);
  margin-bottom:16px;
}
.section-head{max-width:760px;margin-bottom:clamp(26px,3vw,44px)}
.section-head--split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:var(--gap);max-width:none;align-items:end}
.section-title{font-size:clamp(24px,3vw,36px);font-weight:800}
.section-sub{color:var(--muted);font-size:15.5px;margin-top:14px;line-height:1.7}
.text-accent{color:var(--accent-2)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:999px;
  font-size:14.5px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,color .25s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent) 0%,var(--accent-2) 100%);
  color:#031024;
  box-shadow:var(--glow);
  font-weight:700;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(56,189,248,.6)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-ghost{
  background:rgba(8,18,41,.6);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--accent-2);color:var(--accent-2);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0) scale(.98)}
.btn-block{width:100%}
.tag{
  display:inline-block;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  padding:5px 11px;border-radius:999px;color:var(--accent-3);
  background:rgba(96,165,250,.12);border:1px solid var(--line);
}
.tag--warn{color:#fbbf24;background:rgba(245,158,11,.12);border-color:rgba(245,158,11,.3)}
.tag--ok{color:#67e8f9;background:rgba(34,211,238,.12);border-color:rgba(34,211,238,.3)}
.glass{
  background:linear-gradient(160deg,rgba(11,26,56,.86) 0%,rgba(8,18,41,.68) 100%);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-soft);
  backdrop-filter:blur(10px);
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.glass:hover{border-color:var(--line-strong);box-shadow:var(--shadow)}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(3,7,18,.82);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:22px;min-height:70px}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#031024;font-size:17px;box-shadow:var(--glow-2);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:15px;font-weight:800;letter-spacing:-.01em}
.logo-text span{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{
  font-size:14px;font-weight:500;color:var(--muted);
  padding:9px 14px;border-radius:999px;
}
.nav-links a:hover{color:var(--text);background:rgba(96,165,250,.1)}
.nav-links a.active{color:var(--accent-2);background:rgba(37,99,235,.16);border:1px solid var(--line-strong)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-login{font-size:13.5px;font-weight:600;color:var(--muted);padding:9px 10px;border-radius:999px}
.nav-login:hover{color:var(--accent-2)}
.nav-signup{padding:10px 18px;font-size:13.5px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);color:var(--text);
  align-items:center;justify-content:center;font-size:17px;
  background:rgba(8,18,41,.7);
}
.nav-drawer{
  display:none;border-top:1px solid var(--line);
  background:rgba(3,7,18,.97);padding:14px 0 20px;
}
.nav-drawer.open{display:block}
.nav-drawer a{
  display:block;padding:13px 20px;font-size:15px;color:var(--muted);
  border-bottom:1px solid rgba(96,165,250,.08);
}
.nav-drawer a:hover,.nav-drawer a.active{color:var(--accent-2)}

/* ===== Article hero ===== */
.article-hero{
  position:relative;overflow:hidden;
  padding:clamp(30px,4vw,52px) 0 clamp(30px,4vw,50px);
  background:
    linear-gradient(110deg,rgba(3,7,18,.95) 0%,rgba(3,7,18,.86) 48%,rgba(8,18,41,.78) 100%),
    url('/assets/images/935fff339d9b8175.jpg') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(96,165,250,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(96,165,250,.06) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(circle at 72% 25%,#000 8%,transparent 70%);
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--dim);margin-bottom:16px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--accent-2)}
.breadcrumb i{font-size:9px;color:var(--dim)}
.article-hero-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:clamp(22px,3vw,46px);align-items:start}
.article-title{
  font-size:clamp(26px,3.6vw,44px);
  font-weight:800;letter-spacing:-.015em;line-height:1.2;
}
.article-lead{color:var(--muted);font-size:16px;line-height:1.75;margin-top:16px;max-width:720px}
.article-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.meta-chip{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;color:var(--muted);
  padding:7px 13px;border-radius:999px;
  border:1px solid var(--line);background:rgba(8,18,41,.7);
}
.meta-chip i{color:var(--accent-2);font-size:12px}
.hero-panel{padding:22px}
.hero-panel h3{font-size:14px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-2);font-weight:700}
.hero-panel-list{margin-top:16px;display:grid;gap:12px}
.hero-panel-list li{display:flex;gap:11px;align-items:flex-start;font-size:14px;color:var(--muted);line-height:1.6}
.hero-panel-list i{color:var(--ok);margin-top:5px;font-size:12px}
.hero-thumb{margin-top:18px;border-radius:var(--radius-s);overflow:hidden;border:1px solid var(--line)}

/* ===== Article body ===== */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:clamp(24px,3vw,42px);align-items:start}
.article-body-wrap{padding:clamp(22px,3vw,40px)}
.article-content{font-size:16.4px;line-height:1.72;color:#e2e8f0;text-align:left}
.article-content > * + *{margin-top:18px}
.article-content h2{
  font-size:clamp(21px,2.3vw,28px);font-weight:800;color:var(--text);
  margin-top:38px;padding-left:14px;border-left:3px solid var(--accent-2);
}
.article-content h3{font-size:clamp(18px,1.9vw,21px);font-weight:700;color:var(--text);margin-top:28px}
.article-content h4{font-size:16.5px;font-weight:700;color:var(--accent-3);margin-top:22px}
.article-content p{color:#cbd5e1}
.article-content strong{color:var(--text);font-weight:700}
.article-content a{color:var(--accent-2);border-bottom:1px dashed rgba(56,189,248,.5)}
.article-content a:hover{color:#7dd3fc}
.article-content ul,.article-content ol{display:grid;gap:10px;padding-left:2px}
.article-content li{position:relative;padding-left:24px;color:#cbd5e1}
.article-content ul > li::before{
  content:"";position:absolute;left:4px;top:10px;width:7px;height:7px;border-radius:2px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
}
.article-content ol{counter-reset:olc}
.article-content ol > li::before{
  counter-increment:olc;content:counter(olc);
  position:absolute;left:0;top:2px;width:20px;height:20px;border-radius:6px;
  display:grid;place-items:center;font-size:11px;font-weight:700;color:#031024;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
}
.article-content blockquote{
  border-left:3px solid var(--line-strong);
  background:rgba(37,99,235,.1);
  padding:16px 20px;border-radius:0 var(--radius-s) var(--radius-s) 0;
  color:#dbeafe;font-size:15.5px;
}
.article-content img{border-radius:var(--radius-s);border:1px solid var(--line);margin:22px 0}
.article-content table{
  width:100%;border-collapse:collapse;font-size:14.5px;
  border:1px solid var(--line);border-radius:var(--radius-s);overflow:hidden;
}
.article-content th,.article-content td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.article-content th{background:rgba(37,99,235,.16);color:var(--text);font-weight:700;font-size:13.5px}
.article-content tr:last-child td{border-bottom:0}
.empty-state{padding:26px 0;color:var(--muted)}
.empty-state strong{display:block;color:var(--text);font-size:19px;margin-bottom:10px}
.empty-state a{color:var(--accent-2);font-weight:600}

/* Sidebar */
.article-side{display:grid;gap:18px;position:sticky;top:92px}
.side-card{padding:20px}
.side-card h3{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-2);font-weight:700}
.side-list{margin-top:14px;display:grid;gap:12px}
.side-list li{font-size:14px;color:var(--muted);line-height:1.6;display:flex;gap:10px}
.side-list i{color:var(--accent-3);margin-top:5px;font-size:12px}
.side-metric{display:flex;justify-content:space-between;align-items:baseline;padding:11px 0;border-bottom:1px dashed rgba(96,165,250,.18);font-size:14px}
.side-metric:last-child{border-bottom:0}
.side-metric span{color:var(--muted)}
.side-metric b{color:var(--accent-2);font-size:16px}

/* ===== Metrics ===== */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--gap)}
.stat-card{padding:22px}
.stat-card .stat-label{font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);font-weight:700}
.stat-card .stat-value{font-size:clamp(26px,3.2vw,38px);font-weight:800;color:var(--text);margin-top:10px;line-height:1}
.stat-card .stat-value small{font-size:15px;color:var(--accent-2);font-weight:700;margin-left:4px}
.stat-card p{font-size:13.6px;color:var(--muted);margin-top:12px;line-height:1.6}
.stat-bar{height:6px;border-radius:999px;background:rgba(96,165,250,.14);margin-top:16px;overflow:hidden}
.stat-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent-2))}

/* ===== Matrix ===== */
.matrix-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.matrix-card{padding:26px;display:flex;flex-direction:column;gap:14px}
.matrix-icon{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  background:rgba(37,99,235,.16);border:1px solid var(--line-strong);
  color:var(--accent-2);font-size:19px;
}
.matrix-card h3{font-size:18.5px;font-weight:700}
.matrix-card p{font-size:14.5px;color:var(--muted);line-height:1.68}
.matrix-list{display:grid;gap:9px;margin-top:2px}
.matrix-list li{font-size:13.8px;color:#cbd5e1;display:flex;gap:9px;align-items:flex-start}
.matrix-list i{color:var(--ok);font-size:11px;margin-top:6px}

/* ===== Compare ===== */
.compare-wrap{padding:clamp(20px,2.6vw,32px)}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.compare-table{width:100%;min-width:640px;border-collapse:collapse;font-size:14.6px}
.compare-table th,.compare-table td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line)}
.compare-table thead th{
  font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-2);
  background:rgba(37,99,235,.14);font-weight:700;
}
.compare-table tbody tr:hover{background:rgba(96,165,250,.06)}
.compare-table td:first-child{color:var(--text);font-weight:600}
.compare-table td{color:var(--muted)}
.delta-up{color:#67e8f9;font-weight:700}
.delta-down{color:#fca5a5;font-weight:700}

/* ===== Timeline ===== */
.timeline{position:relative;display:grid;gap:22px;padding-left:26px}
.timeline::before{
  content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--accent-2),rgba(37,99,235,.05));
}
.timeline-item{position:relative}
.timeline-item::before{
  content:"";position:absolute;left:-25px;top:8px;width:14px;height:14px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--accent-2);box-shadow:0 0 14px rgba(56,189,248,.6);
}
.timeline-item h4{font-size:16.5px;font-weight:700;color:var(--text)}
.timeline-item .tl-step{font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-2);font-weight:700;display:block;margin-bottom:6px}
.timeline-item p{color:var(--muted);font-size:14.6px;margin-top:8px;line-height:1.68}

/* ===== Category matrix ===== */
.cat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.cat-card{display:flex;flex-direction:column;overflow:hidden}
.cat-card .cat-thumb{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line)}
.cat-card .cat-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.cat-card:hover .cat-thumb img{transform:scale(1.06)}
.cat-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.cat-body h3{font-size:18px;font-weight:700}
.cat-body p{font-size:14.4px;color:var(--muted);line-height:1.66;flex:1}
.cat-link{font-size:13.6px;font-weight:700;color:var(--accent-2);display:inline-flex;align-items:center;gap:8px}
.cat-link i{transition:transform .25s ease}
.cat-card:hover .cat-link i{transform:translateX(4px)}

/* ===== Promise ===== */
.promise-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--gap)}
.promise-item{padding:22px;display:flex;gap:16px;align-items:flex-start}
.promise-item i{
  width:44px;height:44px;flex:0 0 44px;border-radius:13px;display:grid;place-items:center;
  background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.3);color:var(--ok);font-size:17px;
}
.promise-item h4{font-size:16.5px;font-weight:700}
.promise-item p{font-size:14.4px;color:var(--muted);margin-top:8px;line-height:1.66}

/* ===== FAQ ===== */
.faq{display:grid;gap:14px;max-width:920px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(11,26,56,.8) 0%,rgba(8,18,41,.6) 100%);
  overflow:hidden;transition:border-color .25s ease;
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:19px 52px 19px 22px;position:relative;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:20px;top:50%;transform:translateY(-50%);
  color:var(--accent-2);font-size:13px;transition:transform .25s ease;
}
.faq-item[open] summary::after{content:"\f068"}
.faq-item p{padding:0 22px 20px;color:var(--muted);font-size:14.8px;line-height:1.7}

/* ===== CTA ===== */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:var(--radius-l);
  border:1px solid var(--line-strong);
  background:
    linear-gradient(115deg,rgba(3,7,18,.92) 0%,rgba(11,26,56,.86) 100%),
    url('/assets/images/c86e95e2d76b10ee.jpg') center/cover no-repeat;
  padding:clamp(28px,4vw,52px);
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);
  gap:clamp(22px,3vw,44px);align-items:center;
  box-shadow:var(--shadow);
}
.cta-panel h2{font-size:clamp(23px,2.8vw,33px);font-weight:800}
.cta-panel p{color:var(--muted);margin-top:14px;font-size:15.4px;line-height:1.7}
.cta-form{display:grid;gap:12px}
.field{display:grid;gap:7px}
.field label{font-size:12.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.field input,.field select{
  width:100%;padding:13px 16px;border-radius:var(--radius-s);
  background:rgba(3,7,18,.72);border:1px solid var(--line);
  color:var(--text);font-size:14.6px;transition:border-color .22s ease,box-shadow .22s ease;
}
.field input::placeholder{color:var(--dim)}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent-2);box-shadow:var(--glow-2)}
.form-note{font-size:12.4px;color:var(--dim);line-height:1.6}

/* ===== Footer ===== */
.site-footer{
  background:linear-gradient(180deg,var(--bg-1) 0%,var(--bg-0) 100%);
  border-top:1px solid var(--line);
  padding:clamp(40px,5vw,72px) 0 26px;
}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));gap:clamp(22px,3vw,40px)}
.footer-brand p{color:var(--muted);font-size:14.4px;margin-top:16px;line-height:1.7;max-width:420px}
.footer-pay{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.pay-badge{
  font-size:11.5px;font-weight:700;letter-spacing:.06em;
  padding:6px 12px;border-radius:999px;color:var(--accent-3);
  border:1px solid var(--line);background:rgba(37,99,235,.1);
}
.footer-col h4{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--text);font-weight:700}
.footer-col ul{margin-top:16px;display:grid;gap:11px}
.footer-col a{font-size:14.2px;color:var(--muted)}
.footer-col a:hover{color:var(--accent-2)}
.footer-bottom{
  margin-top:clamp(28px,3.5vw,48px);padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:12.8px;color:var(--dim);
}
.footer-bottom .age{display:inline-flex;align-items:center;gap:8px;color:#fbbf24}

/* ===== FAB ===== */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 20px 12px 14px;border-radius:999px;
  background:rgba(7,7,13,.8);backdrop-filter:blur(12px);
  border:1px solid transparent;
  background-image:linear-gradient(rgba(7,7,13,.86),rgba(7,7,13,.86)),linear-gradient(120deg,#38bdf8,#2563eb 55%,#22d3ee);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 20px rgba(6,182,212,.45);
  color:var(--text);font-size:13.4px;font-weight:700;
  opacity:.85;transition:opacity .25s ease,transform .25s ease,box-shadow .25s ease;
  animation:fabPulse 3.4s ease-in-out infinite;
}
.fab i{font-size:16px;color:var(--accent-2);transition:transform .5s ease}
.fab:hover{opacity:1;transform:translateY(-3px) scale(1.03);box-shadow:0 0 30px rgba(56,189,248,.7)}
.fab:hover i{transform:rotate(360deg)}
.fab:active{transform:translateY(0) scale(.97)}
.fab-dot{
  position:absolute;top:6px;right:10px;width:9px;height:9px;border-radius:50%;
  background:#f43f5e;box-shadow:0 0 10px rgba(244,63,94,.9);animation:dotBlink 1.6s infinite;
}
@keyframes fabPulse{0%,100%{box-shadow:0 0 18px rgba(6,182,212,.35)}50%{box-shadow:0 0 30px rgba(56,189,248,.7)}}
@keyframes dotBlink{0%,100%{opacity:1}50%{opacity:.25}}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .article-hero-grid{grid-template-columns:1fr}
  .article-layout{grid-template-columns:1fr}
  .article-side{position:static;grid-template-columns:repeat(2,minmax(0,1fr));display:grid}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .matrix-grid{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:1fr}
  .promise-grid{grid-template-columns:1fr}
  .cta-panel{grid-template-columns:1fr}
  .section-head--split{grid-template-columns:1fr;align-items:start}
}
@media (max-width:768px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-side{grid-template-columns:1fr}
  .article-content{font-size:15.8px}
  .fab{bottom:88px;padding:11px 16px 11px 12px;font-size:12.6px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .logo-text strong{font-size:13.6px}
  .logo-text span{font-size:9.6px}
  .nav{min-height:64px;gap:12px}
  .nav-login{padding:8px 6px;font-size:12.8px}
  .nav-signup{padding:9px 13px;font-size:12.6px}
  .stat-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .article-title{font-size:24px}
  .btn{width:100%}
  .nav-actions .btn{width:auto}
}

/* roulang page: category1 */
:root{
  --bg-0:#030712;
  --bg-1:#081229;
  --bg-2:#0b1a38;
  --bg-3:#0f2350;
  --line:rgba(96,165,250,.16);
  --line-strong:rgba(56,189,248,.42);
  --accent:#2563eb;
  --accent-2:#38bdf8;
  --accent-3:#60a5fa;
  --text:#f8fafc;
  --muted:#94a3b8;
  --dim:#64748b;
  --ok:#22d3ee;
  --warn:#f59e0b;
  --radius-xs:8px;
  --radius-s:12px;
  --radius:18px;
  --radius-l:26px;
  --shadow:0 20px 50px rgba(3,7,18,.65);
  --shadow-soft:0 10px 30px rgba(3,7,18,.45);
  --glow:0 0 26px rgba(37,99,235,.42);
  --glow-2:0 0 22px rgba(56,189,248,.35);
  --maxw:1200px;
  --gap:clamp(18px,2.4vw,30px);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  font-size:16px;
  line-height:1.65;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.25}
p{margin:0}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:clamp(52px,6.5vw,96px) 0;position:relative}
.section--alt{background:linear-gradient(180deg,var(--bg-1) 0%,var(--bg-0) 100%)}
.section--deep{background:radial-gradient(1100px 480px at 82% 0%,rgba(37,99,235,.2),transparent 66%),var(--bg-1)}
.section--line{border-top:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent-2);
  padding:7px 14px;border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(37,99,235,.12);
  margin-bottom:16px;
}
.section-head{max-width:780px;margin-bottom:clamp(26px,3vw,44px)}
.section-title{font-size:clamp(24px,3vw,36px);font-weight:800}
.section-sub{color:var(--muted);font-size:15.5px;margin-top:14px;line-height:1.7}
.text-accent{color:var(--accent-2)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:999px;
  font-size:14.5px;font-weight:600;letter-spacing:.01em;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,color .25s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent) 0%,var(--accent-2) 100%);
  color:#031024;
  box-shadow:var(--glow);
  font-weight:700;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(56,189,248,.6);color:#031024}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-ghost{
  background:rgba(8,18,41,.6);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--accent-2);color:var(--accent-2);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0) scale(.98)}
.btn-block{width:100%}
.tag{
  display:inline-block;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  padding:5px 11px;border-radius:999px;color:var(--accent-3);
  background:rgba(96,165,250,.12);border:1px solid var(--line);
}
.tag--ok{color:#67e8f9;background:rgba(34,211,238,.12);border-color:rgba(34,211,238,.3)}
.tag--warn{color:#fbbf24;background:rgba(245,158,11,.12);border-color:rgba(245,158,11,.3)}
/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(3,7,18,.82);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:22px;min-height:70px}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#031024;font-size:17px;box-shadow:var(--glow-2);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:15px;font-weight:800;letter-spacing:-.01em}
.logo-text span{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{font-size:14px;font-weight:500;color:var(--muted);padding:9px 14px;border-radius:999px;display:block}
.nav-links a:hover{color:var(--text);background:rgba(96,165,250,.1)}
.nav-links a.active{color:var(--accent-2);background:rgba(37,99,235,.16);border:1px solid var(--line-strong)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-login{font-size:13.5px;font-weight:600;color:var(--muted);padding:9px 10px;border-radius:999px}
.nav-login:hover{color:var(--accent-2)}
.nav-signup{padding:10px 18px;font-size:13.5px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);color:var(--text);
  align-items:center;justify-content:center;font-size:17px;
  background:rgba(8,18,41,.7);
}
.nav-toggle:hover{border-color:var(--accent-2);color:var(--accent-2)}
.nav-drawer{display:none;border-top:1px solid var(--line);background:rgba(3,7,18,.97);padding:14px 0 20px}
.nav-drawer.open{display:block}
.nav-drawer a{display:block;padding:13px 20px;font-size:15px;color:var(--muted);border-bottom:1px solid rgba(96,165,250,.08)}
.nav-drawer a:hover,.nav-drawer a.active{color:var(--accent-2)}
/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;
  padding:clamp(46px,6.5vw,92px) 0 clamp(36px,4.4vw,60px);
  background:
    linear-gradient(115deg,rgba(3,7,18,.95) 0%,rgba(3,7,18,.86) 44%,rgba(8,18,41,.74) 100%),
    url('/assets/images/935fff339d9b8175.jpg') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(96,165,250,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(96,165,250,.055) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(circle at 72% 28%,#000 8%,transparent 72%);
  mask-image:radial-gradient(circle at 72% 28%,#000 8%,transparent 72%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:clamp(24px,3.4vw,52px);align-items:start}
.hero-title{font-size:clamp(27px,3.9vw,46px);font-weight:800;line-height:1.18;letter-spacing:-.015em}
.hero-lead{color:#cbd5e1;font-size:16.5px;line-height:1.7;margin-top:18px;max-width:62ch}
.hero-points{display:grid;gap:12px;margin-top:26px}
.hero-points li{display:flex;gap:11px;align-items:flex-start;font-size:14.8px;color:#dbeafe}
.hero-points i{color:var(--accent-2);margin-top:5px;font-size:14px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.trust-chip{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);
  border:1px solid var(--line);background:rgba(8,18,41,.6);padding:8px 13px;border-radius:999px;
}
.trust-chip i{color:var(--ok);font-size:12px}
.hero-panel{
  background:rgba(11,26,56,.55);
  backdrop-filter:blur(14px);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-l);
  padding:clamp(20px,2.4vw,28px);
  box-shadow:var(--shadow);
}
.hero-panel h2{font-size:16px;font-weight:700;letter-spacing:.02em;margin-bottom:8px}
.hp-row{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px dashed rgba(96,165,250,.2)}
.hp-row:last-of-type{border-bottom:0}
.hp-label{font-size:13.5px;color:var(--muted)}
.hp-value{font-size:17px;font-weight:700;color:var(--accent-2)}
.hp-note{font-size:12.4px;color:var(--dim);margin-top:14px;line-height:1.65;border-top:1px solid var(--line);padding-top:14px}
/* ===== Grids ===== */
.grid{display:grid;gap:var(--gap)}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.split{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:clamp(24px,3.6vw,56px);align-items:start}
/* ===== Metric ===== */
.metric{
  background:linear-gradient(160deg,rgba(15,35,80,.62),rgba(8,18,41,.5));
  border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(18px,2vw,24px);backdrop-filter:blur(10px);
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.metric:hover{border-color:var(--line-strong);transform:translateY(-4px);box-shadow:var(--glow-2)}
.metric-label{font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600}
.metric-value{font-size:clamp(26px,3vw,34px);font-weight:800;line-height:1.1;margin:12px 0 8px}
.metric-value span{font-size:15px;font-weight:600;color:var(--accent-2);margin-left:6px}
.metric-note{font-size:13.6px;color:var(--muted);line-height:1.65}
.metric-foot{display:flex;align-items:center;gap:8px;margin-top:14px;font-size:12.4px;color:var(--dim)}
.metric-foot i{color:var(--ok)}
/* ===== Category cards ===== */
.cat-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:rgba(8,18,41,.55);border:1px solid var(--line);border-radius:var(--radius);
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.cat-card:hover{border-color:var(--line-strong);transform:translateY(-5px);box-shadow:var(--shadow-soft)}
.cat-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-2)}
.cat-media img{width:100%;height:100%;object-fit:cover;transition:transform .55s ease}
.cat-card:hover .cat-media img{transform:scale(1.06)}
.cat-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(3,7,18,0) 32%,rgba(3,7,18,.88) 100%)}
.cat-badge{position:absolute;left:14px;top:14px;z-index:2}
.cat-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.cat-body h3{font-size:17.5px;font-weight:700}
.cat-body p{font-size:14px;color:var(--muted);line-height:1.68}
.cat-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px}
.cat-meta span{font-size:12.2px;color:var(--accent-3);background:rgba(96,165,250,.1);border:1px solid var(--line);padding:5px 10px;border-radius:999px}
/* ===== Comparison ===== */
.cmp-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(8,18,41,.5);backdrop-filter:blur(10px);
}
table.cmp{width:100%;border-collapse:collapse;min-width:600px}
.cmp th,.cmp td{padding:15px 18px;text-align:left;font-size:14.6px;border-bottom:1px solid rgba(96,165,250,.12)}
.cmp thead th{font-size:12.4px;text-transform:uppercase;letter-spacing:.08em;color:var(--accent-3);background:rgba(37,99,235,.14);font-weight:700}
.cmp tbody tr:last-child td{border-bottom:0}
.cmp tbody tr:hover{background:rgba(37,99,235,.08)}
.cmp td:first-child{color:var(--muted)}
.cmp .val-ok{color:#67e8f9;font-weight:700}
.cmp .val-warn{color:#fbbf24;font-weight:700}
.cmp-note{font-size:13.2px;color:var(--dim);margin-top:16px;line-height:1.7;max-width:82ch}
/* ===== Timeline ===== */
.timeline{position:relative;padding-left:28px;display:grid;gap:22px}
.timeline::before{content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--accent-2),rgba(37,99,235,.08))}
.tl-item{position:relative}
.tl-item::before{content:"";position:absolute;left:-28px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--bg-0);border:2px solid var(--accent-2);box-shadow:0 0 12px rgba(56,189,248,.6)}
.tl-step{font-size:11.4px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-3);font-weight:700}
.tl-item h3{font-size:16.6px;margin:7px 0 7px}
.tl-item p{font-size:14.2px;color:var(--muted);line-height:1.68}
/* ===== Posts ===== */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:rgba(8,18,41,.55);border:1px solid var(--line);border-radius:var(--radius);
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.post-card:hover{border-color:var(--line-strong);transform:translateY(-5px);box-shadow:var(--shadow-soft)}
.post-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .55s ease}
.post-card:hover .post-thumb img{transform:scale(1.06)}
.post-body{padding:18px;display:flex;flex-direction:column;gap:9px;flex:1}
.post-body h3{font-size:16px;line-height:1.45;font-weight:700}
.post-body h3 a:hover{color:var(--accent-2)}
.post-body p{font-size:13.8px;color:var(--muted);line-height:1.62}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:12.4px;color:var(--dim);margin-top:auto;padding-top:8px}
.post-meta i{color:var(--accent-3);margin-right:5px}
.post-empty{
  padding:26px;border:1px dashed var(--line-strong);border-radius:var(--radius);
  background:rgba(8,18,41,.42);color:var(--muted);font-size:14.6px;line-height:1.7;
}
/* ===== Assurance ===== */
.assure-list{display:grid;gap:16px}
.assure-item{
  display:flex;gap:15px;padding:18px 20px;border-radius:var(--radius);
  border:1px solid var(--line);background:rgba(11,26,56,.42);
  transition:border-color .25s ease,background .25s ease;
}
.assure-item:hover{border-color:var(--line-strong);background:rgba(15,35,80,.5)}
.assure-icon{
  flex:0 0 auto;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(37,99,235,.9),rgba(56,189,248,.9));color:#031024;font-size:16px;
}
.assure-item h3{font-size:16px;margin-bottom:6px}
.assure-item p{font-size:14px;color:var(--muted);line-height:1.68}
/* ===== Quick answers ===== */
.qa-card{
  border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  background:linear-gradient(180deg,rgba(11,26,56,.55),rgba(8,18,41,.42));
  transition:border-color .25s ease,transform .25s ease;
}
.qa-card:hover{border-color:var(--line-strong);transform:translateY(-4px)}
.qa-num{font-size:30px;font-weight:800;color:var(--accent-2);line-height:1}
.qa-unit{font-size:13px;color:var(--dim);letter-spacing:.1em;text-transform:uppercase;margin-top:6px}
.qa-card h3{font-size:16.4px;margin:14px 0 8px}
.qa-card p{font-size:14px;color:var(--muted);line-height:1.68}
/* ===== FAQ ===== */
.faq-list{display:grid;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:rgba(8,18,41,.5);overflow:hidden;transition:border-color .25s ease}
.faq-item[open]{border-color:var(--line-strong);background:rgba(11,26,56,.6)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:17px 20px;font-size:15.6px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;color:var(--accent-2);transition:transform .25s ease}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-item summary:hover{color:var(--accent-2)}
.faq-answer{padding:0 20px 20px;font-size:14.4px;color:var(--muted);line-height:1.72}
/* ===== Form ===== */
.cta-box{
  border:1px solid var(--line-strong);border-radius:var(--radius-l);
  background:linear-gradient(140deg,rgba(15,35,80,.7),rgba(3,7,18,.85));
  padding:clamp(22px,3vw,38px);
  box-shadow:var(--shadow);
}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field--full{grid-column:1 / -1}
.field label{font-size:13.2px;font-weight:600;color:#dbeafe}
.field input,.field select{
  width:100%;padding:13px 15px;border-radius:var(--radius-s);
  background:rgba(3,7,18,.7);border:1px solid var(--line);color:var(--text);font-size:14.6px;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.field input::placeholder{color:#5b6b85}
.field input:focus,.field select:focus{border-color:var(--accent-2);box-shadow:0 0 0 3px rgba(56,189,248,.16);outline:none}
.check{display:flex;gap:11px;align-items:flex-start;font-size:13.4px;color:var(--muted);line-height:1.6}
.check input{width:18px;height:18px;margin-top:2px;accent-color:#38bdf8;flex:0 0 auto}
.form-note{font-size:12.8px;color:var(--dim);margin-top:16px;line-height:1.7}
.form-channels{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}
.form-channels span{font-size:12.2px;font-weight:600;color:var(--accent-3);border:1px solid var(--line);background:rgba(37,99,235,.12);padding:6px 12px;border-radius:999px}
/* ===== FAB ===== */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:50;
  display:flex;align-items:center;gap:10px;
  padding:9px 16px 9px 10px;min-height:52px;
  border-radius:999px;border:1px solid transparent;
  background-image:linear-gradient(rgba(7,12,30,.88),rgba(7,12,30,.88)),linear-gradient(120deg,#38bdf8,#a855f7);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 20px rgba(6,182,212,.45);
  opacity:.78;transition:opacity .25s ease,transform .25s ease,box-shadow .25s ease;
}
.fab:hover{opacity:1;transform:translateY(-2px);box-shadow:0 0 32px rgba(56,189,248,.7)}
.fab:active{transform:scale(.95)}
.fab-icon{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#031024;font-size:15px;
}
.fab-text{font-size:12.6px;font-weight:600;letter-spacing:.02em;color:var(--text)}
.fab-dot{position:absolute;top:6px;right:10px;width:9px;height:9px;border-radius:50%;background:var(--accent-2);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(56,189,248,.65)}70%{box-shadow:0 0 0 12px rgba(56,189,248,0)}100%{box-shadow:0 0 0 0 rgba(56,189,248,0)}}
/* ===== Footer ===== */
.site-footer{
  background:linear-gradient(180deg,var(--bg-1) 0%,var(--bg-0) 100%);
  border-top:1px solid var(--line);
  padding:clamp(42px,5vw,72px) 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.55fr 1fr 1fr 1fr;gap:clamp(22px,3vw,44px)}
.footer-brand p{font-size:14px;color:var(--muted);margin:16px 0 18px;line-height:1.72;max-width:46ch}
.footer-pay{display:flex;flex-wrap:wrap;gap:8px}
.pay-badge{font-size:12px;font-weight:600;color:var(--accent-3);border:1px solid var(--line);background:rgba(37,99,235,.12);padding:6px 12px;border-radius:999px}
.footer-col h4{font-size:12.6px;letter-spacing:.1em;text-transform:uppercase;color:var(--text);margin-bottom:15px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--muted)}
.footer-col a:hover{color:var(--accent-2)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;align-items:center;
  margin-top:clamp(30px,4vw,52px);padding-top:22px;border-top:1px solid var(--line);
  font-size:12.8px;color:var(--dim);
}
.footer-bottom .age{display:inline-flex;align-items:center;gap:8px;color:#fbbf24}
/* ===== Responsive ===== */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav{gap:14px}
  .nav-actions{margin-left:auto}
  .nav-login{font-size:12.6px;padding:8px 8px}
  .nav-signup{padding:9px 14px;font-size:12.6px}
}
@media (max-width:768px){
  .grid-2,.grid-3,.grid-4,.post-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .cmp th,.cmp td{padding:13px 14px;font-size:13.8px}
  .section-sub{font-size:14.8px}
}
@media (max-width:560px){
  .container{padding:0 16px}
  .logo-text span{display:none}
  .logo-text strong{font-size:13.6px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .fab{left:12px;bottom:82px;padding:8px 14px 8px 8px}
  .fab-text{display:none}
}

/* roulang page: category2 */
:root{
  --bg-0:#030712;
  --bg-1:#081229;
  --bg-2:#0b1a38;
  --bg-3:#0f2350;
  --line:rgba(96,165,250,.16);
  --line-strong:rgba(56,189,248,.42);
  --accent:#2563eb;
  --accent-2:#38bdf8;
  --accent-3:#60a5fa;
  --text:#f8fafc;
  --muted:#94a3b8;
  --dim:#64748b;
  --ok:#22d3ee;
  --warn:#f59e0b;
  --radius-xs:8px;
  --radius-s:12px;
  --radius:18px;
  --radius-l:26px;
  --shadow:0 20px 50px rgba(3,7,18,.65);
  --shadow-soft:0 10px 30px rgba(3,7,18,.45);
  --glow:0 0 26px rgba(37,99,235,.42);
  --glow-2:0 0 22px rgba(56,189,248,.35);
  --maxw:1200px;
  --gap:clamp(18px,2.4vw,30px);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  font-size:16px;
  line-height:1.65;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;line-height:1.24;font-weight:800;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px;border-radius:8px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:clamp(52px,6.5vw,96px) 0;position:relative}
.section--alt{background:linear-gradient(180deg,var(--bg-1) 0%,var(--bg-0) 100%)}
.section--deep{background:radial-gradient(1200px 500px at 80% 0%,rgba(37,99,235,.18),transparent 65%),var(--bg-1)}
.section--line{border-top:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent-2);
  padding:7px 14px;border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(37,99,235,.12);
  margin-bottom:16px;
}
.section-head{max-width:780px;margin-bottom:clamp(26px,3vw,44px)}
.section-head--split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:var(--gap);max-width:none;align-items:end}
.section-title{font-size:clamp(24px,3vw,36px);font-weight:800}
.section-sub{color:var(--muted);font-size:15.5px;margin-top:14px;line-height:1.7}
.text-accent{color:var(--accent-2)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:999px;
  font-size:14.5px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,color .25s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent) 0%,var(--accent-2) 100%);
  color:#031024;box-shadow:var(--glow);font-weight:700;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(56,189,248,.6)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-ghost{background:rgba(8,18,41,.6);border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent-2);color:var(--accent-2);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0) scale(.98)}
.btn-block{width:100%}
.tag{
  display:inline-block;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  padding:5px 11px;border-radius:999px;color:var(--accent-3);
  background:rgba(96,165,250,.12);border:1px solid var(--line);
}
.tag--warn{color:#fbbf24;background:rgba(245,158,11,.12);border-color:rgba(245,158,11,.3)}
.tag--ok{color:#67e8f9;background:rgba(34,211,238,.12);border-color:rgba(34,211,238,.3)}
/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(3,7,18,.82);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:22px;min-height:70px}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#031024;font-size:17px;box-shadow:var(--glow-2);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:15px;font-weight:800;letter-spacing:-.01em}
.logo-text span{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{font-size:14px;font-weight:500;color:var(--muted);padding:9px 14px;border-radius:999px}
.nav-links a:hover{color:var(--text);background:rgba(96,165,250,.1)}
.nav-links a.active{color:var(--accent-2);background:rgba(37,99,235,.16);border:1px solid var(--line-strong)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-login{font-size:13.5px;font-weight:600;color:var(--muted);padding:9px 10px;border-radius:999px}
.nav-login:hover{color:var(--accent-2)}
.nav-signup{padding:10px 18px;font-size:13.5px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);color:var(--text);
  align-items:center;justify-content:center;font-size:17px;
  background:rgba(8,18,41,.7);
}
.nav-toggle:hover{border-color:var(--accent-2);color:var(--accent-2)}
.nav-drawer{display:none;border-top:1px solid var(--line);background:rgba(3,7,18,.97);padding:14px 0 20px}
.nav-drawer.open{display:block}
.nav-drawer a{display:block;padding:13px 20px;font-size:15px;color:var(--muted);border-bottom:1px solid rgba(96,165,250,.08)}
.nav-drawer a:hover,.nav-drawer a.active{color:var(--accent-2)}
/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;
  padding:clamp(44px,6vw,88px) 0 clamp(34px,4vw,58px);
  background:
    linear-gradient(115deg,rgba(3,7,18,.95) 0%,rgba(3,7,18,.86) 42%,rgba(8,18,41,.72) 100%),
    url('/assets/images/935fff339d9b8175.jpg') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(96,165,250,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(96,165,250,.055) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(circle at 72% 28%,#000 10%,transparent 72%);
  mask-image:radial-gradient(circle at 72% 28%,#000 10%,transparent 72%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:clamp(24px,3.5vw,52px);align-items:start}
.hero-title{font-size:clamp(28px,4.2vw,48px);font-weight:800;line-height:1.14}
.hero-sub{color:#cbd5e1;font-size:16px;margin-top:18px;line-height:1.7;max-width:62ch}
.hero-points{margin-top:24px;display:grid;gap:11px}
.hero-points li{display:flex;gap:11px;align-items:flex-start;font-size:14.6px;color:#dbeafe}
.hero-points i{color:var(--accent-2);margin-top:4px;font-size:13px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-meta span{
  font-size:12.5px;color:var(--muted);border:1px solid var(--line);
  padding:7px 13px;border-radius:999px;background:rgba(8,18,41,.55);
}
.hero-panel{
  border:1px solid var(--line-strong);
  border-radius:var(--radius-l);
  background:linear-gradient(160deg,rgba(11,26,56,.86),rgba(3,7,18,.78));
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow),var(--glow-2);
  padding:clamp(20px,2.4vw,28px);
}
.panel-title{display:flex;align-items:center;justify-content:space-between;gap:14px;font-size:15px;font-weight:700}
.panel-title i{color:var(--accent-2)}
.panel-live{font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#67e8f9;display:inline-flex;align-items:center;gap:7px}
.panel-live::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 10px var(--ok);animation:pulse 1.8s infinite}
.panel-rows{margin-top:18px;display:grid;gap:12px}
.panel-row{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding-bottom:11px;border-bottom:1px dashed rgba(96,165,250,.22)}
.panel-row:last-child{border-bottom:0;padding-bottom:0}
.panel-row span{font-size:13.4px;color:var(--muted)}
.panel-row strong{font-size:18px;font-weight:800;color:var(--accent-2)}
.panel-bars{display:flex;align-items:flex-end;gap:7px;height:76px;margin-top:20px;padding-top:8px;border-top:1px solid var(--line)}
.panel-bars i{flex:1;border-radius:6px 6px 3px 3px;background:linear-gradient(180deg,var(--accent-2),rgba(37,99,235,.28));animation:grow 1.1s ease both}
.panel-note{font-size:12px;color:var(--dim);margin-top:16px;line-height:1.6}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
@keyframes grow{from{transform:scaleY(.25);opacity:.2}to{transform:scaleY(1);opacity:1}}
/* ===== Metrics ===== */
.metric-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.metric-card{
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(11,26,56,.7),rgba(3,7,18,.6));
  padding:clamp(18px,2.2vw,26px);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.metric-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--glow)}
.metric-label{font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600}
.metric-value{font-size:clamp(26px,3vw,36px);font-weight:800;margin-top:12px;line-height:1.1}
.metric-value small{font-size:14px;font-weight:600;color:var(--muted);margin-left:6px}
.metric-desc{font-size:13.6px;color:var(--muted);margin-top:12px;line-height:1.65}
.metric-delta{display:inline-flex;align-items:center;gap:7px;margin-top:14px;font-size:12.5px;font-weight:600;color:#67e8f9}
/* ===== Matrix ===== */
.matrix-layout{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);gap:clamp(22px,3vw,42px);align-items:start}
.var-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--gap)}
.var-card{
  border-left:2px solid var(--line-strong);
  border-radius:var(--radius-s);
  background:linear-gradient(120deg,rgba(15,35,80,.55),rgba(3,7,18,.4));
  padding:20px 22px;
  transition:background .25s ease,border-color .25s ease,transform .25s ease;
}
.var-card:hover{background:linear-gradient(120deg,rgba(15,35,80,.85),rgba(3,7,18,.5));border-color:var(--accent-2);transform:translateX(4px)}
.var-card h3{font-size:16.5px;font-weight:700;display:flex;align-items:center;gap:10px}
.var-card h3 i{color:var(--accent-2);font-size:14px}
.var-card p{font-size:14px;color:var(--muted);margin-top:10px;line-height:1.68}
.var-note{font-size:12.6px;color:var(--dim);margin-top:12px;display:block}
.matrix-aside{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--bg-1)}
.matrix-aside img{width:100%;aspect-ratio:4/3;object-fit:cover}
.matrix-aside figcaption{padding:18px 20px;font-size:13.6px;color:var(--muted);line-height:1.65}
.matrix-aside figcaption strong{display:block;color:var(--text);font-size:14.6px;margin-bottom:8px}
/* ===== Compare ===== */
.compare{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:rgba(8,18,41,.5)}
.compare-head,.compare-row{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,.7fr) minmax(0,.7fr);gap:14px;align-items:center;padding:16px clamp(16px,2vw,24px)}
.compare-head{background:rgba(37,99,235,.14);font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-2)}
.compare-row{border-top:1px solid rgba(96,165,250,.12);font-size:14.6px}
.compare-row:hover{background:rgba(56,189,248,.06)}
.compare-label{color:#e2e8f0}
.compare-before{color:var(--dim);font-weight:600}
.compare-after{color:#67e8f9;font-weight:700}
.compare-note{font-size:13px;color:var(--dim);margin-top:16px;line-height:1.65;max-width:80ch}
/* ===== Timeline ===== */
.steps{display:grid;gap:0;border-left:1px solid var(--line-strong);margin-left:10px}
.step{position:relative;padding:0 0 34px 32px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-7px;top:6px;width:13px;height:13px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--accent-2);box-shadow:0 0 12px rgba(56,189,248,.6);
}
.step-index{font-size:11.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-2)}
.step h3{font-size:17.5px;margin-top:8px}
.step p{font-size:14.4px;color:var(--muted);margin-top:10px;line-height:1.68;max-width:78ch}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
/* ===== Channel ===== */
.channel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.channel-card{
  display:flex;flex-direction:column;gap:14px;
  border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(20px,2.3vw,28px);
  background:linear-gradient(165deg,rgba(11,26,56,.72),rgba(3,7,18,.55));
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.channel-card:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:var(--glow)}
.channel-card h3{font-size:18px}
.channel-card p{font-size:14.2px;color:var(--muted);line-height:1.68}
.channel-link{font-size:13.5px;font-weight:700;color:var(--accent-2);display:inline-flex;align-items:center;gap:8px;margin-top:auto}
.channel-card:hover .channel-link{gap:13px}
.channel-card--current{border-color:var(--line-strong);box-shadow:var(--glow)}
/* ===== News ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.news-card{
  border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(8,18,41,.55);
  padding:22px;
  transition:transform .25s ease,border-color .25s ease,background .25s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-strong);background:rgba(11,26,56,.8)}
.news-card h3{font-size:16.5px;margin-top:14px;line-height:1.42}
.news-card p{font-size:13.8px;color:var(--muted);margin-top:11px;line-height:1.66}
.news-meta{display:flex;align-items:center;gap:9px;font-size:12.4px;color:var(--dim);margin-top:16px}
.news-meta i{color:var(--accent-2)}
.news-empty{
  border:1px dashed var(--line-strong);border-radius:var(--radius);
  padding:26px;color:var(--muted);font-size:14.4px;background:rgba(8,18,41,.4);
}
/* ===== Guarantee ===== */
.guarantee-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--gap)}
.guarantee-item{border-top:2px solid var(--line-strong);padding-top:18px}
.guarantee-item i{font-size:19px;color:var(--accent-2)}
.guarantee-item h3{font-size:16px;margin-top:12px}
.guarantee-item p{font-size:13.8px;color:var(--muted);margin-top:10px;line-height:1.66}
.pay-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;align-items:center}
.pay-row .pay-label{font-size:12.5px;color:var(--dim);letter-spacing:.1em;text-transform:uppercase;margin-right:6px}
/* ===== FAQ ===== */
.faq-list{display:grid;gap:12px;max-width:960px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(150deg,rgba(11,26,56,.6),rgba(3,7,18,.5));
  overflow:hidden;transition:border-color .25s ease;
}
.faq-item[open]{border-color:var(--line-strong)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent-2)}
.faq-icon{
  flex-shrink:0;width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;font-size:12px;
  border:1px solid var(--line-strong);color:var(--accent-2);
  transition:transform .25s ease,background .25s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:rgba(37,99,235,.2)}
.faq-answer{padding:0 22px 20px;color:var(--muted);font-size:14.4px;line-height:1.72}
/* ===== CTA form ===== */
.cta-panel{
  border:1px solid var(--line-strong);border-radius:var(--radius-l);
  background:
    radial-gradient(900px 340px at 12% 0%,rgba(37,99,235,.28),transparent 62%),
    linear-gradient(160deg,rgba(11,26,56,.9),rgba(3,7,18,.85));
  box-shadow:var(--shadow);
  padding:clamp(24px,3.4vw,48px);
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.9fr);gap:clamp(24px,3vw,48px);align-items:start;
}
.cta-copy h2{font-size:clamp(23px,2.8vw,32px)}
.cta-copy p{color:#cbd5e1;font-size:15px;margin-top:16px;line-height:1.7}
.cta-list{margin-top:22px;display:grid;gap:11px}
.cta-list li{display:flex;gap:11px;font-size:14.4px;color:#dbeafe;align-items:flex-start}
.cta-list i{color:var(--accent-2);margin-top:4px;font-size:13px}
.signup-form{display:grid;gap:14px}
.field{display:grid;gap:7px}
.field label{font-size:13px;font-weight:600;color:var(--muted)}
.field input,.field select{
  width:100%;padding:13px 15px;border-radius:var(--radius-s);
  background:rgba(3,7,18,.75);border:1px solid var(--line);
  color:var(--text);font-size:14.5px;transition:border-color .22s ease,box-shadow .22s ease;
}
.field input::placeholder{color:var(--dim)}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent-2);box-shadow:var(--glow-2)}
.field-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.check{display:flex;gap:11px;align-items:flex-start;font-size:13.2px;color:var(--muted);line-height:1.6}
.check input{width:17px;height:17px;flex-shrink:0;margin-top:3px;accent-color:var(--accent-2)}
.form-note{font-size:12.2px;color:var(--dim);line-height:1.6}
/* ===== Footer ===== */
.site-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,var(--bg-1),var(--bg-0));padding:clamp(40px,5vw,68px) 0 26px}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,.85fr));gap:clamp(22px,3vw,42px)}
.footer-brand p{font-size:14px;color:var(--muted);margin-top:16px;line-height:1.7;max-width:46ch}
.footer-pay{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}
.pay-badge{
  font-size:12px;font-weight:600;color:#cbd5e1;
  border:1px solid var(--line);border-radius:999px;padding:6px 13px;
  background:rgba(8,18,41,.6);
}
.footer-col h4{font-size:14px;letter-spacing:.04em;margin-bottom:14px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--muted)}
.footer-col a:hover{color:var(--accent-2)}
.footer-bottom{
  margin-top:clamp(30px,4vw,48px);padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px 26px;justify-content:space-between;
  font-size:12.8px;color:var(--dim);
}
.footer-bottom .age{display:inline-flex;align-items:center;gap:8px;color:#fbbf24}
/* ===== FAB ===== */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:60;
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 18px;min-height:52px;border-radius:999px;
  color:#e0f2fe;font-size:13.4px;font-weight:600;
  background:
    linear-gradient(rgba(7,7,13,.84),rgba(7,7,13,.84)) padding-box,
    linear-gradient(135deg,var(--accent-2),var(--accent)) border-box;
  border:1px solid transparent;
  backdrop-filter:blur(14px);
  box-shadow:0 0 20px rgba(56,189,248,.45);
  opacity:.8;
  animation:fabFloat 3.4s ease-in-out infinite;
  transition:opacity .25s ease,transform .25s ease,box-shadow .25s ease;
}
.fab i{font-size:15px;color:var(--accent-2)}
.fab::after{
  content:"";position:absolute;top:6px;right:8px;width:9px;height:9px;border-radius:50%;
  background:#f43f5e;box-shadow:0 0 10px #f43f5e;animation:pulse 1.6s infinite;
}
.fab:hover{opacity:1;transform:translateY(-2px) scale(1.04);box-shadow:0 0 32px rgba(56,189,248,.72)}
.fab:active{transform:scale(.96)}
@keyframes fabFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
/* ===== Responsive ===== */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions{margin-left:auto}
  .hero-inner{grid-template-columns:minmax(0,1fr)}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .matrix-layout{grid-template-columns:minmax(0,1fr)}
  .channel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .guarantee-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-panel{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  .section-head--split{grid-template-columns:minmax(0,1fr);align-items:start}
  .var-grid{grid-template-columns:minmax(0,1fr)}
  .compare-head,.compare-row{grid-template-columns:minmax(0,1fr);gap:6px}
  .compare-head span:nth-child(2),.compare-head span:nth-child(3){display:none}
  .compare-row{padding:18px clamp(16px,4vw,22px)}
  .compare-before::before{content:"Trước: ";color:var(--dim)}
  .compare-after::before{content:"Sau: ";color:var(--accent-2)}
  .field-row{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:520px){
  .logo-text strong{font-size:13.5px}
  .logo-text span{font-size:9.5px}
  .nav-login{padding:8px 6px;font-size:12.5px}
  .nav-signup{padding:9px 13px;font-size:12.5px}
  .metric-grid{grid-template-columns:minmax(0,1fr)}
  .channel-grid,.news-grid,.guarantee-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .hero-cta .btn{width:100%}
  .fab{left:12px;bottom:84px;padding:11px 14px;font-size:12.4px}
  .fab span{display:none}
}

/* roulang page: category3 */
:root{
  --bg-0:#030712;
  --bg-1:#081229;
  --bg-2:#0b1a38;
  --bg-3:#0f2350;
  --line:rgba(96,165,250,.16);
  --line-strong:rgba(56,189,248,.42);
  --accent:#2563eb;
  --accent-2:#38bdf8;
  --accent-3:#60a5fa;
  --text:#f8fafc;
  --muted:#94a3b8;
  --dim:#64748b;
  --ok:#22d3ee;
  --warn:#f59e0b;
  --danger:#f43f5e;
  --glass:rgba(8,18,41,.62);
  --glass-soft:rgba(11,26,56,.5);
  --radius-xs:8px;
  --radius-s:12px;
  --radius:18px;
  --radius-l:26px;
  --shadow:0 20px 50px rgba(3,7,18,.65);
  --shadow-soft:0 10px 30px rgba(3,7,18,.45);
  --glow:0 0 26px rgba(37,99,235,.42);
  --glow-2:0 0 22px rgba(56,189,248,.35);
  --maxw:1200px;
  --gap:clamp(18px,2.4vw,30px);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  font-size:16px;
  line-height:1.65;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease,border-color .22s ease}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 14px}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:800;letter-spacing:-.015em}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px;border-radius:8px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:clamp(52px,6.5vw,96px) 0;position:relative}
.section--alt{background:linear-gradient(180deg,var(--bg-1) 0%,var(--bg-0) 100%)}
.section--deep{background:radial-gradient(1200px 500px at 80% 0%,rgba(37,99,235,.18),transparent 65%),var(--bg-1)}
.section--line{border-top:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent-2);
  padding:7px 14px;border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(37,99,235,.12);
  margin-bottom:16px;
}
.section-head{max-width:780px;margin-bottom:clamp(26px,3vw,44px)}
.section-head--split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:var(--gap);max-width:none;align-items:end}
.section-title{font-size:clamp(24px,3vw,36px)}
.section-sub{color:var(--muted);font-size:15.5px;margin-top:14px;line-height:1.7}
.text-accent{color:var(--accent-2)}
.text-warn{color:#fbbf24}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:999px;
  font-size:14.5px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,color .25s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent) 0%,var(--accent-2) 100%);
  color:#031024;
  box-shadow:var(--glow);
  font-weight:700;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(56,189,248,.6)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-ghost{
  background:rgba(8,18,41,.6);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--accent-2);color:var(--accent-2);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0) scale(.98)}
.btn-block{width:100%}
.tag{
  display:inline-block;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  padding:5px 11px;border-radius:999px;color:var(--accent-3);
  background:rgba(96,165,250,.12);border:1px solid var(--line);
}
.tag--warn{color:#fbbf24;background:rgba(245,158,11,.12);border-color:rgba(245,158,11,.3)}
.tag--ok{color:#67e8f9;background:rgba(34,211,238,.12);border-color:rgba(34,211,238,.3)}
.tag--danger{color:#fda4af;background:rgba(244,63,94,.12);border-color:rgba(244,63,94,.3)}
/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(3,7,18,.82);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:22px;min-height:70px}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#031024;font-size:17px;box-shadow:var(--glow-2);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:15px;font-weight:800;letter-spacing:-.01em}
.logo-text span{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{
  font-size:14px;font-weight:500;color:var(--muted);
  padding:9px 14px;border-radius:999px;
}
.nav-links a:hover{color:var(--text);background:rgba(96,165,250,.1)}
.nav-links a.active{color:var(--accent-2);background:rgba(37,99,235,.16);border:1px solid var(--line-strong)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-login{font-size:13.5px;font-weight:600;color:var(--muted);padding:9px 10px;border-radius:999px}
.nav-login:hover{color:var(--accent-2)}
.nav-signup{padding:10px 18px;font-size:13.5px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);color:var(--text);
  align-items:center;justify-content:center;font-size:17px;
  background:rgba(8,18,41,.7);
}
.nav-drawer{
  display:none;border-top:1px solid var(--line);
  background:rgba(3,7,18,.97);padding:14px 0 20px;
}
.nav-drawer.open{display:block}
.nav-drawer a{
  display:block;padding:13px 20px;font-size:15px;color:var(--muted);
  border-bottom:1px solid rgba(96,165,250,.08);
}
.nav-drawer a:hover,.nav-drawer a.active{color:var(--accent-2)}

/* ===== Category hero ===== */
.cat-hero{
  position:relative;overflow:hidden;
  padding:clamp(46px,6vw,88px) 0 clamp(40px,5vw,68px);
  background:
    linear-gradient(112deg,rgba(3,7,18,.95) 0%,rgba(3,7,18,.86) 42%,rgba(8,18,41,.74) 100%),
    url('/assets/images/935fff339d9b8175.jpg') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(96,165,250,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(96,165,250,.06) 1px,transparent 1px);
  background-size:54px 54px;
  mask-image:radial-gradient(circle at 74% 26%,#000 8%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 74% 26%,#000 8%,transparent 72%);
}
.cat-hero__inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);
  gap:clamp(26px,3.6vw,56px);align-items:start;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--dim);margin-bottom:18px}
.breadcrumb a:hover{color:var(--accent-2)}
.cat-hero h1{font-size:clamp(28px,4.2vw,50px);line-height:1.12;margin-bottom:18px}
.cat-hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--accent-2),var(--accent-3));-webkit-background-clip:text;background-clip:text;color:transparent}
.cat-hero__lead{color:#cbd5e1;font-size:16.5px;max-width:620px;line-height:1.7}
.cat-hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;padding-top:20px;border-top:1px solid var(--line)}
.hero-facts span{font-size:13px;color:var(--muted);display:inline-flex;align-items:center;gap:8px}
.hero-facts i{color:var(--accent-2)}

/* Hero side panel */
.hero-panel{
  background:var(--glass);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-l);
  padding:clamp(22px,2.6vw,30px);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.hero-panel__top{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.ring{
  --pct:82;
  width:150px;height:150px;border-radius:50%;
  background:conic-gradient(var(--accent-2) calc(var(--pct) * 1%),rgba(96,165,250,.13) 0);
  display:grid;place-items:center;
  box-shadow:var(--glow-2);
  flex-shrink:0;
}
.ring-core{
  width:118px;height:118px;border-radius:50%;
  background:linear-gradient(160deg,#0b1a38,#030712);
  display:grid;place-items:center;text-align:center;line-height:1.2;
  border:1px solid var(--line);
}
.ring-core strong{display:block;font-size:26px;font-weight:800;color:var(--accent-2)}
.ring-core span{display:block;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-top:2px}
.ring-meta{flex:1;min-width:180px}
.ring-meta h3{font-size:16px;margin-bottom:8px}
.ring-meta p{font-size:13.5px;color:var(--muted);margin:0}
.tier-list{margin-top:22px;border-top:1px dashed var(--line);padding-top:18px}
.tier-list h4{font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);margin-bottom:12px}
.tier{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 14px;border-radius:var(--radius-s);
  background:rgba(15,35,80,.42);border:1px solid var(--line);
  margin-bottom:9px;transition:border-color .22s ease,transform .22s ease;
}
.tier:hover{border-color:var(--line-strong);transform:translateX(3px)}
.tier b{font-size:14px;font-weight:600}
.tier small{display:block;font-size:11.5px;color:var(--dim);margin-top:2px}
.tier em{font-style:normal;font-size:14px;font-weight:700;color:var(--accent-2);white-space:nowrap}

/* ===== Grids & cards ===== */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--gap)}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--gap)}
.card{
  background:var(--glass-soft);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(20px,2.2vw,26px);
  transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease,background .24s ease;
}
.card:hover{border-color:var(--line-strong);transform:translateY(-4px);box-shadow:var(--shadow-soft)}
.card__icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:rgba(37,99,235,.18);border:1px solid var(--line-strong);
  color:var(--accent-2);font-size:17px;margin-bottom:16px;
}
.card h3{font-size:17px;margin-bottom:10px}
.card p{font-size:14px;color:var(--muted);margin:0;line-height:1.68}
.card__foot{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--dim)}
.stat{
  background:linear-gradient(165deg,rgba(11,26,56,.75),rgba(3,7,18,.6));
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(20px,2.2vw,26px);
  position:relative;overflow:hidden;
}
.stat::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:2px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2),transparent);
}
.stat__value{font-size:clamp(26px,3vw,38px);font-weight:800;letter-spacing:-.02em;color:#fff}
.stat__value small{font-size:14px;font-weight:600;color:var(--accent-2);margin-left:4px}
.stat__label{font-size:13.5px;font-weight:600;margin-top:8px}
.stat__note{font-size:12.5px;color:var(--dim);margin-top:6px;line-height:1.6}

/* ===== Compare ===== */
.compare-wrap{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:var(--gap);align-items:start}
.compare{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--glass-soft)}
.compare-row{
  display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.9fr) minmax(0,.9fr);
  gap:12px;padding:15px 20px;border-bottom:1px solid var(--line);align-items:center;
}
.compare-row:last-child{border-bottom:0}
.compare-row--head{background:rgba(15,35,80,.5);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);font-weight:700}
.compare-row span:first-child{font-size:14px;color:#cbd5e1}
.compare-val{font-size:14.5px;font-weight:700}
.compare-val.is-bad{color:#fda4af}
.compare-val.is-good{color:var(--accent-2)}
.compare-bar{height:8px;border-radius:999px;background:rgba(96,165,250,.14);overflow:hidden;margin-top:7px}
.compare-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.compare-bar.is-bad i{background:linear-gradient(90deg,#7f1d1d,var(--danger))}
.media-frame{
  border:1px solid var(--line);border-radius:var(--radius-l);overflow:hidden;
  background:var(--glass-soft);position:relative;
}
.media-frame img{width:100%;height:100%;object-fit:cover;min-height:280px}
.media-frame figcaption{
  padding:16px 20px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);
  background:rgba(3,7,18,.55);
}

/* ===== Timeline ===== */
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:19px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--accent-2),rgba(96,165,250,.08));
}
.tl-item{position:relative;padding:0 0 26px 60px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:6px;top:0;width:28px;height:28px;border-radius:50%;
  background:linear-gradient(140deg,#0b1a38,#030712);border:2px solid var(--accent-2);
  display:grid;place-items:center;font-size:11px;font-weight:800;color:var(--accent-2);
  box-shadow:0 0 18px rgba(56,189,248,.4);
}
.tl-item h3{font-size:16px;margin-bottom:7px}
.tl-item p{font-size:14px;color:var(--muted);margin:0;max-width:760px}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}

/* ===== Category matrix ===== */
.matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.matrix-card{
  display:flex;flex-direction:column;gap:12px;height:100%;
  background:linear-gradient(160deg,rgba(15,35,80,.62),rgba(3,7,18,.72));
  border:1px solid var(--line);border-radius:var(--radius-l);
  padding:clamp(22px,2.4vw,30px);
  transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.matrix-card:hover{border-color:var(--line-strong);transform:translateY(-5px);box-shadow:var(--shadow)}
.matrix-card.is-current{border-color:var(--accent-2);box-shadow:var(--glow)}
.matrix-card h3{font-size:19px}
.matrix-card p{font-size:14px;color:var(--muted);margin:0}
.matrix-card .matrix-go{margin-top:auto;font-size:13.5px;font-weight:700;color:var(--accent-2);display:inline-flex;align-items:center;gap:8px}
.matrix-card .matrix-go i{transition:transform .22s ease}
.matrix-card:hover .matrix-go i{transform:translateX(4px)}

/* ===== News list ===== */
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--glass-soft);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.news-card:hover{border-color:var(--line-strong);transform:translateY(-4px);box-shadow:var(--shadow-soft)}
.news-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:#0b1a38}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:16px;line-height:1.42}
.news-body h3 a:hover{color:var(--accent-2)}
.news-body p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.62}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:12px;border-top:1px solid var(--line);font-size:12px;color:var(--dim)}
.empty-note{
  padding:34px 24px;text-align:center;border:1px dashed var(--line-strong);
  border-radius:var(--radius);color:var(--muted);font-size:14.5px;
  background:rgba(8,18,41,.5);
}

/* ===== Guarantee ===== */
.guarantee{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--gap)}
.g-item{display:flex;gap:16px;padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(8,18,41,.45)}
.g-item i{font-size:19px;color:var(--accent-2);margin-top:4px}
.g-item h3{font-size:15.5px;margin-bottom:7px}
.g-item p{font-size:13.5px;color:var(--muted);margin:0}

/* ===== FAQ ===== */
.faq{display:grid;gap:12px;max-width:920px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-s);background:rgba(8,18,41,.5);overflow:hidden;transition:border-color .22s ease}
.faq-item.open{border-color:var(--line-strong);background:rgba(15,35,80,.42)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:17px 20px;text-align:left;font-size:15px;font-weight:600;color:var(--text);
}
.faq-q i{color:var(--accent-2);transition:transform .28s ease;flex-shrink:0}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s ease}
.faq-a p{padding:0 20px 18px;font-size:14px;color:var(--muted);margin:0;line-height:1.7}

/* ===== Form ===== */
.cta-band{
  background:
    linear-gradient(120deg,rgba(3,7,18,.94),rgba(15,35,80,.78)),
    url('/assets/images/605d8a47f4e7a3bf.jpg') center/cover no-repeat;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-l);
  padding:clamp(26px,3.4vw,46px);
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.92fr);
  gap:clamp(24px,3vw,44px);align-items:start;
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:clamp(22px,2.7vw,32px);margin-bottom:14px}
.cta-band p{color:#cbd5e1;font-size:15px;max-width:520px}
.cta-points{margin-top:20px;display:grid;gap:10px}
.cta-points span{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted)}
.cta-points i{color:var(--accent-2);margin-top:4px}
.form-card{
  background:rgba(3,7,18,.72);
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  padding:clamp(20px,2.4vw,28px);
  backdrop-filter:blur(12px);
}
.field{margin-bottom:14px}
.field label{display:block;font-size:12.5px;font-weight:600;color:var(--muted);margin-bottom:7px}
.field input,.field select{
  width:100%;padding:12px 14px;border-radius:var(--radius-s);
  background:rgba(8,18,41,.85);border:1px solid var(--line);
  color:var(--text);font-size:14px;transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:var(--dim)}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent-2);box-shadow:0 0 0 3px rgba(56,189,248,.16)}
.check{display:flex;gap:10px;align-items:flex-start;font-size:12.5px;color:var(--dim);margin:6px 0 16px;line-height:1.6}
.check input{width:16px;height:16px;margin-top:3px;accent-color:#38bdf8}
.form-note{font-size:12px;color:var(--dim);margin-top:12px;line-height:1.6}

/* ===== FAB ===== */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:50;
  display:inline-flex;align-items:center;gap:11px;
  padding:12px 20px 12px 14px;border-radius:999px;
  background:rgba(7,7,13,.82);
  backdrop-filter:blur(14px);
  border:1px solid transparent;
  background-image:linear-gradient(rgba(7,7,13,.88),rgba(7,7,13,.88)),linear-gradient(120deg,#38bdf8,#2563eb,#22d3ee);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 20px rgba(56,189,248,.45);
  color:var(--text);font-size:13.5px;font-weight:600;
  opacity:.78;transition:opacity .24s ease,transform .24s ease,box-shadow .24s ease;
  animation:fabPulse 3.4s ease-in-out infinite;
}
.fab:hover{opacity:1;transform:translateY(-3px) scale(1.03);box-shadow:0 0 34px rgba(56,189,248,.7)}
.fab:active{transform:translateY(0) scale(.97)}
.fab i{font-size:15px;color:var(--accent-2)}
.fab .fab-dot{
  position:absolute;top:-4px;right:-4px;width:12px;height:12px;border-radius:50%;
  background:#f43f5e;box-shadow:0 0 10px rgba(244,63,94,.9);
  animation:dotBlink 1.5s ease-in-out infinite;
}
@keyframes fabPulse{0%,100%{box-shadow:0 0 18px rgba(56,189,248,.35)}50%{box-shadow:0 0 30px rgba(56,189,248,.6)}}
@keyframes dotBlink{0%,100%{opacity:1}50%{opacity:.35}}
@media (max-width:520px){.fab{left:12px;bottom:88px;padding:11px 16px 11px 12px;font-size:12.5px}}

/* ===== Footer ===== */
.site-footer{
  background:linear-gradient(180deg,var(--bg-1) 0%,#020509 100%);
  border-top:1px solid var(--line);
  padding:clamp(42px,5vw,72px) 0 26px;
  margin-top:10px;
}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));gap:clamp(24px,3vw,40px)}
.footer-brand p{font-size:13.5px;color:var(--muted);margin:16px 0 18px;max-width:420px;line-height:1.7}
.footer-pay{display:flex;flex-wrap:wrap;gap:8px}
.pay-badge{
  font-size:11.5px;font-weight:700;letter-spacing:.04em;
  padding:6px 12px;border-radius:999px;
  border:1px solid var(--line);color:var(--accent-3);background:rgba(37,99,235,.1);
}
.footer-col h4{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);margin-bottom:14px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:13.5px;color:var(--muted)}
.footer-col a:hover{color:var(--accent-2)}
.footer-bottom{
  margin-top:clamp(30px,4vw,46px);padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--dim);
}
.footer-bottom .age{display:inline-flex;align-items:center;gap:7px;color:#fda4af}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .cat-hero__inner{grid-template-columns:1fr}
  .compare-wrap{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .matrix{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  .section-head--split{grid-template-columns:1fr;align-items:start}
  .guarantee{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .hero-panel__top{justify-content:flex-start}
  .ring{margin:0 auto}
  .compare-row{grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr) minmax(0,.8fr);padding:13px 14px;gap:8px}
  .compare-row span:first-child{font-size:13px}
  .compare-val{font-size:13.5px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .grid-3,.grid-4,.matrix{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cat-hero h1{font-size:26px}
  .cat-hero__actions .btn{width:100%}
  .ring{width:132px;height:132px}
  .ring-core{width:104px;height:104px}
  .ring-core strong{font-size:22px}
  .compare-row{grid-template-columns:1fr;gap:4px}
  .compare-row--head{display:none}
  .compare-row span:first-child{font-weight:600;color:#e2e8f0}
  .logo-text span{display:none}
}

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