/* roulang page: index */
:root{
  --bg-0:#030712;
  --bg-1:#081229;
  --bg-2:#0b1a34;
  --panel:rgba(11,23,45,.72);
  --panel-soft:rgba(15,32,60,.55);
  --line:rgba(56,189,248,.18);
  --line-strong:rgba(96,165,250,.42);
  --blue:#2563eb;
  --blue-deep:#1d4ed8;
  --cyan:#38bdf8;
  --holo:#60a5fa;
  --text:#f8fafc;
  --muted:#94a3b8;
  --dim:#64748b;
  --gold:#fbbf24;
  --radius-xs:10px;
  --radius-sm:14px;
  --radius:18px;
  --radius-lg:26px;
  --shadow:0 18px 50px rgba(2,6,23,.55);
  --glow:0 0 24px rgba(37,99,235,.45);
  --glow-cyan:0 0 22px rgba(56,189,248,.38);
  --font:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.65;
  color:var(--text);
  background:
    radial-gradient(1100px 520px at 12% -6%, rgba(37,99,235,.22), transparent 62%),
    radial-gradient(900px 480px at 92% 4%, rgba(56,189,248,.14), transparent 60%),
    var(--bg-0);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:700;letter-spacing:-.01em}
p{margin:0}
button{font-family:inherit;cursor:pointer;border:0;background:none}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ===== HEADER / NAV ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(3,7,18,.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(56,189,248,.14);
}
.nav-wrap{display:flex;align-items:center;gap:16px;min-height:74px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;min-width:0}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  display:grid;place-items:center;font-size:1.05rem;color:#e0f2fe;
  background:linear-gradient(140deg,rgba(37,99,235,.85),rgba(56,189,248,.6));
  box-shadow:var(--glow);
  border:1px solid rgba(147,197,253,.35);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{
  font-size:.95rem;font-weight:700;letter-spacing:-.01em;color:#f1f5f9;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:270px;
}
.brand-text small{font-size:.72rem;color:var(--cyan);letter-spacing:.05em;text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  padding:9px 14px;border-radius:999px;font-size:.9rem;font-weight:500;color:var(--muted);
  border:1px solid transparent;white-space:nowrap;
}
.nav-link:hover{color:#e0f2fe;background:rgba(56,189,248,.08);border-color:rgba(56,189,248,.2)}
.nav-link.active{
  color:#e0f2fe;background:rgba(37,99,235,.24);
  border-color:var(--line-strong);box-shadow:inset 0 0 18px rgba(56,189,248,.16);
}
.nav-actions{display:flex;align-items:center;gap:9px;flex-shrink:0}
.btn-ghost{
  padding:9px 16px;border-radius:999px;font-size:.88rem;font-weight:600;color:#bfdbfe;
  border:1px solid rgba(96,165,250,.45);background:rgba(8,18,41,.5);transition:.22s ease;
}
.btn-ghost:hover{color:#fff;border-color:var(--cyan);box-shadow:0 0 16px rgba(56,189,248,.28)}
.btn-solid{
  padding:10px 19px;border-radius:999px;font-size:.88rem;font-weight:700;color:#02101f;
  background:linear-gradient(135deg,#38bdf8,#2563eb 70%);
  box-shadow:0 0 20px rgba(56,189,248,.45);transition:.22s ease;
}
.btn-solid:hover{transform:translateY(-1px);box-shadow:0 0 26px rgba(56,189,248,.62);color:#02101f}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;align-items:center;justify-content:center;
  color:#bfdbfe;border:1px solid rgba(96,165,250,.35);background:rgba(8,18,41,.6);font-size:1.05rem;
}

/* ===== HERO ===== */
.hero{position:relative;overflow:hidden;padding:72px 0 68px;border-bottom:1px solid rgba(56,189,248,.12)}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.34;filter:saturate(1.05);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(3,7,18,.72) 0%,rgba(3,7,18,.9) 62%,var(--bg-0) 100%);
}
.hero-inner{position:relative;z-index:2;text-align:center;max-width:900px;margin:0 auto}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:999px;
  font-size:.76rem;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:#a5f3fc;
  background:rgba(8,47,73,.55);border:1px solid rgba(56,189,248,.4);box-shadow:var(--glow-cyan);
}
.hero h1{
  margin:22px 0 0;font-size:clamp(1.7rem,4.4vw,2.9rem);font-weight:800;color:#f8fafc;
  text-shadow:0 6px 30px rgba(2,6,23,.8);
}
.hero h1 span{
  background:linear-gradient(100deg,#38bdf8,#a5f3fc 45%,#60a5fa);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{
  margin:20px auto 0;max-width:780px;font-size:1.02rem;line-height:1.75;color:#cbd5e1;
}
.hero-search{
  display:flex;align-items:center;gap:10px;margin:30px auto 0;max-width:640px;
  padding:9px 9px 9px 18px;border-radius:999px;
  background:rgba(9,20,40,.86);border:1px solid rgba(96,165,250,.35);
  box-shadow:0 18px 45px rgba(2,6,23,.6),inset 0 0 26px rgba(37,99,235,.14);
  backdrop-filter:blur(14px);
}
.hero-search i{color:var(--cyan);font-size:.98rem}
.hero-search input{
  flex:1;min-width:0;background:transparent;border:0;color:#e2e8f0;font-size:.95rem;padding:9px 4px;
}
.hero-search input::placeholder{color:var(--dim)}
.hero-search button{
  padding:11px 24px;border-radius:999px;font-weight:700;font-size:.9rem;color:#02101f;white-space:nowrap;
  background:linear-gradient(135deg,#38bdf8,#2563eb 72%);box-shadow:0 0 20px rgba(56,189,248,.45);
  transition:.22s ease;
}
.hero-search button:hover{transform:translateY(-1px);box-shadow:0 0 26px rgba(56,189,248,.65)}
.hero-cta{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:24px}
.btn-primary-lg{
  display:inline-flex;align-items:center;gap:10px;padding:14px 28px;border-radius:999px;
  font-weight:700;font-size:.98rem;color:#02101f;
  background:linear-gradient(135deg,#a5f3fc,#38bdf8 40%,#2563eb);
  box-shadow:0 0 28px rgba(56,189,248,.5);transition:.24s ease;
}
.btn-primary-lg:hover{transform:translateY(-2px);box-shadow:0 0 36px rgba(56,189,248,.72);color:#02101f}
.btn-outline-lg{
  display:inline-flex;align-items:center;gap:10px;padding:14px 26px;border-radius:999px;
  font-weight:600;font-size:.96rem;color:#bfdbfe;
  border:1px solid rgba(96,165,250,.5);background:rgba(8,18,41,.55);transition:.24s ease;
}
.btn-outline-lg:hover{color:#fff;border-color:var(--cyan);box-shadow:0 0 22px rgba(56,189,248,.3)}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:36px;text-align:left;
}
.hero-stats .stat{
  padding:16px 18px;border-radius:var(--radius-sm);
  background:var(--panel);border:1px solid rgba(56,189,248,.16);backdrop-filter:blur(12px);
}
.hero-stats .stat b{display:block;font-size:1.35rem;color:#7dd3fc;font-weight:800}
.hero-stats .stat span{font-size:.8rem;color:var(--muted)}
.quick-links{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px;margin-top:26px;
}
.quick-links .ql-label{font-size:.78rem;letter-spacing:.09em;text-transform:uppercase;color:var(--dim)}
.chip{
  padding:8px 15px;border-radius:999px;font-size:.83rem;font-weight:500;color:#cbd5e1;
  background:rgba(15,32,60,.6);border:1px solid rgba(56,189,248,.2);transition:.22s ease;
}
.chip:hover{color:#fff;border-color:var(--cyan);box-shadow:0 0 16px rgba(56,189,248,.3);transform:translateY(-1px)}

/* ===== SECTION ===== */
.section{padding:70px 0;position:relative}
.section--alt{background:linear-gradient(180deg,rgba(8,18,41,.72),rgba(3,7,18,.2))}
.section-head{max-width:800px;margin-bottom:38px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(1.35rem,2.7vw,2rem);margin-top:12px}
.section-head p{margin-top:14px;color:var(--muted);font-size:.98rem;line-height:1.72;text-align:left}
.section-head.center p{text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:7px;font-size:.74rem;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;color:#7dd3fc;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,#38bdf8,transparent)}

/* ===== GLASS CARD / GRID ===== */
.glass{
  background:linear-gradient(160deg,rgba(15,32,60,.78),rgba(8,18,41,.62));
  border:1px solid var(--line);border-radius:var(--radius);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.glass:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 22px 46px rgba(2,6,23,.6),0 0 26px rgba(37,99,235,.22)}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.feature{padding:26px 24px}
.feature .ficon{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;font-size:1.15rem;
  color:#a5f3fc;background:rgba(37,99,235,.22);border:1px solid rgba(96,165,250,.35);margin-bottom:16px;
}
.feature h3{font-size:1.03rem;margin-bottom:10px;color:#e2e8f0}
.feature p{font-size:.9rem;color:var(--muted);line-height:1.7}

/* ===== SPLIT ===== */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center}
.split-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.split-media img{width:100%;height:100%;object-fit:cover;min-height:320px}
.split-media .media-tag{
  position:absolute;left:16px;bottom:16px;padding:8px 14px;border-radius:999px;font-size:.78rem;font-weight:600;
  color:#e0f2fe;background:rgba(3,7,18,.78);border:1px solid rgba(56,189,248,.4);backdrop-filter:blur(8px);
}
.sub-block{padding:20px 0;border-top:1px dashed rgba(56,189,248,.2)}
.sub-block:first-of-type{border-top:0;padding-top:0}
.sub-block h3{font-size:.95rem;color:#a5f3fc;font-weight:600;line-height:1.5}
.sub-block p{margin-top:10px;font-size:.9rem;color:var(--muted);line-height:1.72}

/* ===== STEPS ===== */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;counter-reset:step}
.step{padding:26px 22px;position:relative}
.step .num{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;font-weight:800;font-size:.95rem;
  color:#02101f;background:linear-gradient(135deg,#a5f3fc,#38bdf8);box-shadow:0 0 18px rgba(56,189,248,.4);
}
.step h3{margin:16px 0 9px;font-size:1rem}
.step p{font-size:.89rem;color:var(--muted);line-height:1.7}

/* ===== METER ===== */
.meter-list{display:grid;gap:18px}
.meter{padding:18px 20px;border-radius:var(--radius-sm);background:var(--panel-soft);border:1px solid rgba(56,189,248,.16)}
.meter-top{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:10px}
.meter-top strong{font-size:.95rem;color:#e2e8f0;font-weight:600}
.meter-top span{font-size:1.02rem;font-weight:800;color:#7dd3fc}
.meter-track{height:8px;border-radius:999px;background:rgba(15,23,42,.9);overflow:hidden;border:1px solid rgba(56,189,248,.14)}
.meter-fill{
  height:100%;width:0;border-radius:999px;
  background:linear-gradient(90deg,#2563eb,#38bdf8);
  box-shadow:0 0 16px rgba(56,189,248,.55);
  transition:width 1.2s cubic-bezier(.22,1,.36,1);
}
.meter.on .meter-fill{width:var(--pct)}

/* ===== MATRIX ===== */
.matrix{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.matrix-item{padding:22px 20px;text-align:left}
.matrix-item i{font-size:1.3rem;color:#7dd3fc;margin-bottom:12px;display:block}
.matrix-item h3{font-size:.94rem;margin-bottom:8px}
.matrix-item p{font-size:.85rem;color:var(--muted);line-height:1.65}

/* ===== CHANNEL / CATEGORY ===== */
.channel{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.channel-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.channel-card .ch-top{position:relative;height:150px;overflow:hidden}
.channel-card .ch-top img{width:100%;height:100%;object-fit:cover;opacity:.72;transition:transform .5s ease}
.channel-card:hover .ch-top img{transform:scale(1.07)}
.channel-card .ch-top::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(3,7,18,.2),rgba(3,7,18,.92))}
.channel-card .ch-body{padding:22px 22px 26px}
.channel-card h3{font-size:1.05rem;margin-bottom:10px;color:#e2e8f0}
.channel-card p{font-size:.88rem;color:var(--muted);line-height:1.68;margin-bottom:16px}
.channel-card .ch-link{font-size:.86rem;font-weight:700;color:#7dd3fc;display:inline-flex;align-items:center;gap:8px}
.channel-card:hover .ch-link{color:#a5f3fc}

/* ===== RANK TABLE ===== */
.rank{width:100%;border-collapse:separate;border-spacing:0 10px}
.rank th{
  font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);
  text-align:left;padding:0 16px 6px;font-weight:700;
}
.rank td{
  background:var(--panel-soft);border-top:1px solid rgba(56,189,248,.14);border-bottom:1px solid rgba(56,189,248,.14);
  padding:15px 16px;font-size:.9rem;color:#cbd5e1;vertical-align:middle;
}
.rank tr td:first-child{border-left:1px solid rgba(56,189,248,.14);border-radius:12px 0 0 12px}
.rank tr td:last-child{border-right:1px solid rgba(56,189,248,.14);border-radius:0 12px 12px 0}
.rank .rk-index{font-weight:800;color:#7dd3fc}
.rank .rk-name{font-weight:600;color:#e2e8f0}
.rank .rk-bar{display:inline-block;height:6px;border-radius:999px;background:linear-gradient(90deg,#2563eb,#38bdf8);vertical-align:middle;min-width:32px}

/* ===== QUOTE WALL ===== */
.quote{padding:24px 22px}
.quote .stars{color:var(--gold);font-size:.82rem;letter-spacing:2px}
.quote p{margin:13px 0 16px;font-size:.9rem;color:#cbd5e1;line-height:1.72}
.quote .who{display:flex;align-items:center;gap:11px}
.quote .who span.av{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:.85rem;
  color:#02101f;background:linear-gradient(135deg,#a5f3fc,#2563eb);
}
.quote .who b{display:block;font-size:.88rem;color:#e2e8f0}
.quote .who small{font-size:.76rem;color:var(--dim)}

/* ===== TRUST ROW ===== */
.trust-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.trust-item{padding:20px;display:flex;gap:14px;align-items:flex-start}
.trust-item i{font-size:1.15rem;color:#7dd3fc;margin-top:2px}
.trust-item b{display:block;font-size:.9rem;color:#e2e8f0;margin-bottom:6px}
.trust-item p{font-size:.83rem;color:var(--muted);line-height:1.62}

/* ===== REWARD ===== */
.reward{
  padding:34px;border-radius:var(--radius-lg);
  background:linear-gradient(140deg,rgba(37,99,235,.26),rgba(8,18,41,.85));
  border:1px solid rgba(96,165,250,.4);box-shadow:0 0 40px rgba(37,99,235,.25);
}
.reward .code-box{
  display:inline-flex;align-items:center;gap:12px;margin:16px 0 6px;padding:14px 22px;border-radius:14px;
  font-size:1.35rem;font-weight:800;letter-spacing:.16em;color:#02101f;
  background:linear-gradient(135deg,#a5f3fc,#38bdf8);box-shadow:0 0 26px rgba(56,189,248,.5);
}
.reward ul{margin-top:18px;display:grid;gap:10px}
.reward li{display:flex;gap:10px;font-size:.9rem;color:#cbd5e1;line-height:1.62}
.reward li i{color:#38bdf8;margin-top:5px;font-size:.8rem}

/* ===== POSTS ===== */
.post-list{display:grid;gap:16px}
.post-card{display:flex;gap:18px;padding:16px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--line);transition:.26s ease}
.post-card:hover{border-color:var(--line-strong);transform:translateX(4px);box-shadow:0 14px 34px rgba(2,6,23,.5)}
.post-thumb{flex:0 0 158px;border-radius:12px;overflow:hidden;border:1px solid rgba(56,189,248,.16)}
.post-thumb img{width:100%;height:112px;object-fit:cover;transition:transform .5s ease}
.post-card:hover .post-thumb img{transform:scale(1.06)}
.post-body{min-width:0;display:flex;flex-direction:column;gap:6px}
.post-body h3{font-size:1rem;line-height:1.45}
.post-body h3 a:hover{color:#a5f3fc}
.post-body p{font-size:.86rem;color:var(--muted);line-height:1.65}
.post-meta{font-size:.76rem;color:var(--dim);margin-top:auto}
.tag{
  display:inline-block;padding:4px 11px;border-radius:999px;font-size:.7rem;font-weight:700;
  letter-spacing:.09em;text-transform:uppercase;color:#a5f3fc;
  background:rgba(37,99,235,.2);border:1px solid rgba(96,165,250,.32);width:fit-content;
}
.aside-card{padding:24px 22px;border-radius:var(--radius);background:var(--panel-soft);border:1px solid var(--line)}
.aside-card h3{font-size:1rem;margin-bottom:16px}
.aside-list{display:grid;gap:14px}
.aside-list a{display:block;padding-bottom:13px;border-bottom:1px dashed rgba(56,189,248,.18)}
.aside-list li:last-child a{border-bottom:0;padding-bottom:0}
.aside-title{display:block;font-size:.88rem;color:#cbd5e1;line-height:1.55}
.aside-list a:hover .aside-title{color:#a5f3fc}
.aside-meta{display:block;font-size:.74rem;color:var(--dim);margin-top:5px}
.empty-note{padding:22px;border-radius:var(--radius-sm);background:var(--panel-soft);border:1px dashed rgba(56,189,248,.24);color:var(--muted);font-size:.9rem}
.filter-empty{display:none;padding:20px;border-radius:var(--radius-sm);background:var(--panel-soft);border:1px dashed rgba(56,189,248,.24);color:var(--muted);font-size:.9rem}
.filter-empty.show{display:block}

/* ===== CHANGELOG ===== */
.log-list{display:grid;gap:14px}
.log-item{display:flex;gap:18px;padding:18px 20px;border-radius:var(--radius-sm);background:var(--panel-soft);border:1px solid rgba(56,189,248,.14)}
.log-item .ver{
  flex:0 0 92px;font-weight:800;font-size:.9rem;color:#7dd3fc;letter-spacing:.03em;
}
.log-item .log-body b{display:block;font-size:.93rem;color:#e2e8f0;margin-bottom:6px}
.log-item .log-body p{font-size:.85rem;color:var(--muted);line-height:1.65}

/* ===== FAQ ===== */
.faq{display:grid;gap:12px}
.faq-item{border-radius:var(--radius-sm);background:var(--panel-soft);border:1px solid rgba(56,189,248,.16);overflow:hidden}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;
  padding:18px 20px;font-size:.95rem;font-weight:600;color:#e2e8f0;transition:.2s ease;
}
.faq-q:hover{color:#a5f3fc}
.faq-q i{color:#38bdf8;transition:transform .3s 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-item.open .faq-a{max-height:340px}
.faq-a p{padding:0 20px 20px;font-size:.88rem;color:var(--muted);line-height:1.72}

/* ===== CTA BAND ===== */
.cta-band{
  padding:52px 40px;border-radius:var(--radius-lg);text-align:center;
  background:linear-gradient(150deg,rgba(37,99,235,.32),rgba(3,7,18,.9));
  border:1px solid rgba(96,165,250,.42);box-shadow:0 0 46px rgba(37,99,235,.28);
}
.cta-band h2{font-size:clamp(1.3rem,2.6vw,1.85rem)}
.cta-band p{margin:16px auto 26px;max-width:660px;color:#cbd5e1;font-size:.95rem;line-height:1.72}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}

/* ===== FAB ===== */
.fab{
  position:fixed;left:1rem;bottom:6rem;z-index:50;
  width:56px;height:56px;border-radius:999px;display:grid;place-items:center;
  color:#a5f3fc;font-size:1.2rem;
  background:rgba(7,12,28,.85);backdrop-filter:blur(14px);
  border:1px solid transparent;
  background-image:linear-gradient(rgba(7,12,28,.9),rgba(7,12,28,.9)),linear-gradient(135deg,#38bdf8,#2563eb);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 22px rgba(56,189,248,.45);
  opacity:.78;transition:.26s ease;
}
.fab:hover{opacity:1;transform:scale(1.08);box-shadow:0 0 32px rgba(56,189,248,.75)}
.fab:active{transform:scale(.95)}
.fab .fab-dot{
  position:absolute;top:6px;right:7px;width:9px;height:9px;border-radius:50%;
  background:#22d3ee;box-shadow:0 0 10px #22d3ee;animation:pulseDot 1.6s infinite;
}
@keyframes pulseDot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.78)}}

/* ===== FOOTER ===== */
.site-footer{
  margin-top:20px;padding:58px 0 26px;border-top:1px solid rgba(56,189,248,.18);
  background:linear-gradient(180deg,rgba(3,7,18,.4),rgba(3,7,18,.95));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.footer-brand p{margin-top:16px;font-size:.87rem;color:var(--muted);line-height:1.72;max-width:330px}
.footer-col h4{font-size:.82rem;letter-spacing:.13em;text-transform:uppercase;color:#7dd3fc;margin-bottom:16px}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:.87rem;color:var(--muted)}
.footer-col a:hover{color:#a5f3fc}
.pay-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}
.pay-badge{
  padding:7px 13px;border-radius:9px;font-size:.76rem;font-weight:700;color:#cbd5e1;
  background:rgba(15,32,60,.7);border:1px solid rgba(56,189,248,.22);
}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(56,189,248,.14);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
}
.footer-bottom p{font-size:.8rem;color:var(--dim)}
.age-badge{
  padding:5px 12px;border-radius:8px;font-size:.75rem;font-weight:800;color:#fca5a5;
  border:1px solid rgba(248,113,113,.45);background:rgba(69,10,10,.4);
}

/* ===== RESPONSIVE ===== */
@media (max-width:1100px){
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-4,.matrix,.trust-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
}
@media (max-width:991px){
  .main-nav{
    position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:4px;
    padding:14px 18px 20px;margin:0;
    background:rgba(4,10,24,.98);border-bottom:1px solid rgba(56,189,248,.2);
    box-shadow:0 24px 40px rgba(2,6,23,.7);display:none;
  }
  .main-nav.open{display:flex}
  .nav-link{padding:11px 14px;border-radius:12px}
  .nav-toggle{display:inline-flex}
  .brand-text strong{max-width:170px}
  .split{grid-template-columns:1fr;gap:30px}
  .channel{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:1fr}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .section{padding:56px 0}
  .hero{padding:56px 0 52px}
}
@media (max-width:767px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:576px){
  .container{padding:0 16px}
  .nav-wrap{gap:10px;min-height:66px}
  .brand-mark{width:38px;height:38px;flex:0 0 38px;border-radius:11px}
  .brand-text strong{max-width:120px;font-size:.86rem}
  .brand-text small{display:none}
  .btn-ghost{padding:8px 12px;font-size:.8rem}
  .btn-solid{padding:9px 13px;font-size:.8rem}
  .hero-search{flex-wrap:wrap;border-radius:20px;padding:12px}
  .hero-search button{width:100%}
  .hero-stats,.grid-2,.grid-4,.matrix,.trust-row,.channel{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .post-card{flex-direction:column;gap:14px}
  .post-thumb{flex:none}
  .post-thumb img{height:170px}
  .reward,.cta-band{padding:26px 20px}
  .log-item{flex-direction:column;gap:8px}
  .log-item .ver{flex:none}
  .fab{left:.85rem;bottom:5.25rem;width:52px;height:52px}
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: article */
:root{
  --bg-0:#030712;
  --bg-1:#081229;
  --bg-2:#0b1a34;
  --panel:rgba(11,23,45,.72);
  --panel-soft:rgba(15,32,60,.55);
  --line:rgba(56,189,248,.18);
  --line-strong:rgba(96,165,250,.42);
  --blue:#2563eb;
  --blue-deep:#1d4ed8;
  --cyan:#38bdf8;
  --holo:#60a5fa;
  --text:#f8fafc;
  --muted:#94a3b8;
  --dim:#64748b;
  --gold:#fbbf24;
  --radius-xs:10px;
  --radius-sm:14px;
  --radius:18px;
  --radius-lg:26px;
  --shadow:0 18px 50px rgba(2,6,23,.55);
  --glow:0 0 24px rgba(37,99,235,.45);
  --glow-cyan:0 0 22px rgba(56,189,248,.38);
  --font:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.65;
  color:var(--text);
  background:
    radial-gradient(1100px 520px at 12% -6%, rgba(37,99,235,.22), transparent 62%),
    radial-gradient(900px 480px at 92% 4%, rgba(56,189,248,.14), transparent 60%),
    var(--bg-0);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
button{font-family:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;color:#f8fafc}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
/* ===== HEADER / NAV ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(3,7,18,.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(56,189,248,.14);
}
.nav-wrap{display:flex;align-items:center;gap:16px;min-height:74px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;min-width:0}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  display:grid;place-items:center;font-size:1.05rem;color:#e0f2fe;
  background:linear-gradient(140deg,rgba(37,99,235,.85),rgba(56,189,248,.6));
  box-shadow:var(--glow);
  border:1px solid rgba(147,197,253,.35);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{
  font-size:.95rem;font-weight:700;letter-spacing:-.01em;color:#f1f5f9;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:270px;
}
.brand-text small{font-size:.72rem;color:var(--cyan);letter-spacing:.05em;text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  padding:9px 14px;border-radius:999px;font-size:.9rem;font-weight:500;color:var(--muted);
  border:1px solid transparent;white-space:nowrap;
}
.nav-link:hover{color:#e0f2fe;background:rgba(56,189,248,.08);border-color:rgba(56,189,248,.2)}
.nav-link.active{
  color:#e0f2fe;background:rgba(37,99,235,.24);
  border-color:var(--line-strong);box-shadow:inset 0 0 18px rgba(56,189,248,.16);
}
.nav-actions{display:flex;align-items:center;gap:9px;flex-shrink:0}
.btn-ghost{
  padding:9px 16px;border-radius:999px;font-size:.88rem;font-weight:600;color:#bfdbfe;
  border:1px solid rgba(96,165,250,.45);background:rgba(8,18,41,.5);transition:.22s ease;
}
.btn-ghost:hover{color:#fff;border-color:var(--cyan);box-shadow:0 0 16px rgba(56,189,248,.28)}
.btn-solid{
  padding:10px 19px;border-radius:999px;font-size:.88rem;font-weight:700;color:#02101f;
  background:linear-gradient(135deg,#38bdf8,#2563eb 70%);
  box-shadow:0 0 20px rgba(56,189,248,.45);transition:.22s ease;
}
.btn-solid:hover{transform:translateY(-1px);box-shadow:0 0 26px rgba(56,189,248,.62);color:#02101f}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;align-items:center;justify-content:center;
  color:#bfdbfe;border:1px solid rgba(96,165,250,.35);background:rgba(8,18,41,.6);font-size:1.05rem;
}
/* ===== HERO (ARTICLE) ===== */
.article-hero{position:relative;overflow:hidden;padding:0 0 56px}
.article-hero .hero-visual{
  position:absolute;top:0;left:0;right:0;height:430px;
  background-image:url("/assets/images/b235e203ce990e60.jpg");
  background-size:cover;background-position:center;
  opacity:.22;
  clip-path:polygon(0 0,100% 0,100% 82%,0 100%);
}
.article-hero::after{
  content:"";position:absolute;top:0;left:0;right:0;height:470px;
  background:linear-gradient(180deg,rgba(3,7,18,.6) 0%,rgba(3,7,18,.92) 70%,var(--bg-0) 100%);
  clip-path:polygon(0 0,100% 0,100% 82%,0 100%);
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.82rem;color:var(--dim);padding:26px 0 0}
.crumbs a{color:#9ec4ea}
.crumbs a:hover{color:var(--cyan)}
.crumbs i{font-size:.62rem;color:#334155}
.hero-panel{
  margin-top:24px;padding:34px 0 0;
  text-align:left;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:18px}
.tag{
  display:inline-flex;align-items:center;gap:7px;padding:6px 13px;border-radius:999px;
  font-size:.74rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:#a5f3fc;background:rgba(8,47,73,.55);border:1px solid rgba(56,189,248,.36);
}
.tag.gold{color:#fde68a;background:rgba(120,53,15,.35);border-color:rgba(251,191,36,.4)}
.article-hero h1{
  font-size:clamp(1.65rem,4vw,2.6rem);line-height:1.22;max-width:900px;
  text-shadow:0 8px 34px rgba(2,6,23,.85);
}
.article-hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,#38bdf8,#a5f3fc 45%,#60a5fa);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{margin-top:18px;max-width:760px;font-size:1.02rem;line-height:1.75;color:#c8d6e5}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:22px;
  font-size:.85rem;color:var(--muted);
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta i{color:var(--cyan)}
.hero-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.btn-primary-lg{
  display:inline-flex;align-items:center;gap:10px;padding:14px 28px;border-radius:999px;
  font-weight:700;font-size:.98rem;color:#02101f;
  background:linear-gradient(135deg,#a5f3fc,#38bdf8 40%,#2563eb);
  box-shadow:0 0 28px rgba(56,189,248,.5);transition:.24s ease;
}
.btn-primary-lg:hover{transform:translateY(-2px);box-shadow:0 0 36px rgba(56,189,248,.72);color:#02101f}
.btn-outline-lg{
  display:inline-flex;align-items:center;gap:10px;padding:13px 26px;border-radius:999px;
  font-weight:600;font-size:.94rem;color:#bfdbfe;border:1px solid var(--line-strong);
  background:rgba(8,18,41,.55);transition:.24s ease;
}
.btn-outline-lg:hover{color:#fff;border-color:var(--cyan);box-shadow:0 0 20px rgba(56,189,248,.3)}
.hero-cover{margin-top:34px;position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.hero-cover img{width:100%;aspect-ratio:16/7;object-fit:cover}
.hero-cover figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:16px 20px;font-size:.82rem;color:#cbd5e1;
  background:linear-gradient(180deg,transparent,rgba(3,7,18,.9));
}
/* ===== SECTION BASE ===== */
.section{padding:64px 0;position:relative}
.section.alt{background:linear-gradient(180deg,rgba(8,18,41,.55),rgba(3,7,18,.2));border-top:1px solid rgba(56,189,248,.1);border-bottom:1px solid rgba(56,189,248,.1)}
.section-head{max-width:760px;margin-bottom:34px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:.74rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--cyan);margin-bottom:12px;
}
.section-head h2{font-size:clamp(1.35rem,2.7vw,1.95rem);line-height:1.3}
.section-head p{margin-top:14px;color:var(--muted);font-size:.98rem;line-height:1.72}
.grid{display:grid;gap:20px}
.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))}
.panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.panel:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 18px 42px rgba(2,6,23,.6)}
.panel h3{font-size:1.03rem;margin-bottom:10px}
.panel p{color:var(--muted);font-size:.92rem;line-height:1.68}
.icon-badge{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;font-size:1.05rem;
  color:#e0f2fe;background:linear-gradient(140deg,rgba(37,99,235,.55),rgba(56,189,248,.3));
  border:1px solid rgba(96,165,250,.35);margin-bottom:16px;box-shadow:inset 0 0 18px rgba(56,189,248,.18);
}
/* ===== ARTICLE BODY ===== */
.article-wrap{padding:56px 0 40px}
.article-shell{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:clamp(22px,4vw,48px);box-shadow:var(--shadow);
}
.article-body{color:#cbd5e1;font-size:1.02rem;line-height:1.75;max-width:880px;margin:0 auto}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-size:clamp(1.24rem,2.4vw,1.6rem);margin:38px 0 16px;padding-left:16px;position:relative;line-height:1.36;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--cyan),var(--blue));
  box-shadow:0 0 14px rgba(56,189,248,.55);
}
.article-body h3{font-size:1.1rem;margin:28px 0 12px;color:#e2e8f0}
.article-body p{margin:0 0 18px}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:0}
.article-body ul li,.article-body ol li{
  position:relative;padding-left:26px;margin-bottom:10px;color:#c3d0e0;
}
.article-body ul li::before{
  content:"\f0da";font-family:"Font Awesome 6 Free";font-weight:900;font-size:.72rem;
  color:var(--cyan);position:absolute;left:4px;top:6px;
}
.article-body ol{counter-reset:li}
.article-body ol li{counter-increment:li}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:2px;width:20px;height:20px;border-radius:50%;
  display:grid;place-items:center;font-size:.7rem;font-weight:700;color:#02101f;
  background:linear-gradient(135deg,#38bdf8,#2563eb);
}
.article-body img{border-radius:var(--radius);border:1px solid var(--line);margin:24px 0}
.article-body a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:#a5f3fc}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;border-left:3px solid var(--cyan);
  background:rgba(8,47,73,.35);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:#cbd5e1;font-size:.98rem;
}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:.92rem;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article-body th{background:rgba(37,99,235,.18);color:#e0f2fe}
.article-empty{text-align:left;padding:10px 0}
.article-empty h2{font-size:1.3rem;margin-bottom:12px}
.article-empty p{color:var(--muted);margin-bottom:20px}
/* ===== QUICK FACTS STRIP ===== */
.fact-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
}
.fact{background:rgba(8,18,41,.85);padding:22px 20px}
.fact strong{display:block;font-size:1.5rem;font-weight:800;color:#a5f3fc;line-height:1.2}
.fact span{display:block;margin-top:6px;font-size:.84rem;color:var(--muted)}
/* ===== PERFORMANCE BLOCK ===== */
.perf-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:34px;align-items:start}
.perf-list li{
  display:flex;gap:12px;padding:13px 0;border-bottom:1px dashed rgba(56,189,248,.16);color:#c3d0e0;font-size:.95rem;
}
.perf-list li:last-child{border-bottom:0}
.perf-list i{color:var(--cyan);margin-top:4px}
.stat-stack{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.stat{
  background:linear-gradient(150deg,rgba(37,99,235,.22),rgba(15,32,60,.6));
  border:1px solid var(--line-strong);border-radius:var(--radius-sm);padding:20px;
}
.stat b{display:block;font-size:1.7rem;font-weight:800;color:#e0f2fe;line-height:1.1}
.stat small{display:block;margin-top:8px;color:var(--muted);font-size:.8rem;line-height:1.5}
.stat i{color:var(--cyan);font-size:1rem;margin-bottom:10px;display:block}
/* ===== STEPS ===== */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;counter-reset:step}
.step{
  position:relative;padding:26px 22px 22px;border-radius:var(--radius);
  background:var(--panel-soft);border:1px solid var(--line);
}
.step::before{
  counter-increment:step;content:"0" counter(step);
  position:absolute;top:-16px;left:20px;font-size:.8rem;font-weight:800;letter-spacing:.06em;
  padding:6px 12px;border-radius:999px;color:#02101f;
  background:linear-gradient(135deg,#a5f3fc,#38bdf8);
  box-shadow:0 0 18px rgba(56,189,248,.5);
}
.step h3{font-size:1rem;margin:8px 0 10px}
.step p{color:var(--muted);font-size:.9rem}
/* ===== DEVICE / SPLIT ===== */
.split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.split-col{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.split-col h3{display:flex;align-items:center;gap:10px;font-size:1.05rem;margin-bottom:16px}
.split-col h3 i{color:var(--cyan)}
.spec-list li{display:flex;justify-content:space-between;gap:14px;padding:10px 0;border-bottom:1px solid rgba(56,189,248,.12);font-size:.9rem}
.spec-list li:last-child{border-bottom:0}
.spec-list span:first-child{color:var(--muted)}
.spec-list span:last-child{color:#e2e8f0;font-weight:600;text-align:right}
/* ===== TRUST ===== */
.trust-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.trust-chip{
  display:inline-flex;align-items:center;gap:9px;padding:10px 16px;border-radius:999px;
  font-size:.84rem;color:#cbd5e1;background:rgba(8,18,41,.6);border:1px solid var(--line);
  transition:.22s ease;
}
.trust-chip i{color:var(--cyan)}
.trust-chip:hover{border-color:var(--line-strong);color:#e0f2fe;box-shadow:0 0 16px rgba(56,189,248,.18)}
/* ===== FAQ ===== */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:0;overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item[open]{border-color:var(--line-strong);box-shadow:0 14px 34px rgba(2,6,23,.5)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;font-weight:600;font-size:.98rem;color:#e2e8f0;
  display:flex;align-items:center;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"\2b";font-family:"Font Awesome 6 Free";font-weight:900;color:var(--cyan);font-size:.9rem;
  transition:transform .22s ease;
}
.faq-item[open] summary::before{transform:rotate(45deg)}
.faq-item p{padding:0 22px 20px 54px;color:var(--muted);font-size:.92rem;line-height:1.72}
/* ===== FINAL CTA ===== */
.cta-final{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);padding:clamp(28px,5vw,52px);
  background:linear-gradient(130deg,rgba(37,99,235,.28),rgba(8,18,41,.9) 55%,rgba(56,189,248,.2));
  box-shadow:var(--shadow);text-align:center;
}
.cta-final::after{
  content:"";position:absolute;width:340px;height:340px;right:-90px;top:-120px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,189,248,.35),transparent 68%);
}
.cta-final > *{position:relative;z-index:2}
.cta-final h2{font-size:clamp(1.3rem,3vw,2rem)}
.cta-final p{margin:16px auto 0;max-width:660px;color:#c8d6e5;font-size:.98rem}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:26px}
/* ===== FOOTER ===== */
.site-footer{
  margin-top:70px;padding:56px 0 28px;
  background:linear-gradient(180deg,rgba(8,18,41,.5),rgba(3,7,18,.96));
  border-top:1px solid rgba(56,189,248,.14);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
.footer-brand p{margin-top:16px;color:var(--muted);font-size:.9rem;line-height:1.72;max-width:360px}
.pay-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.pay-badge{
  padding:6px 12px;border-radius:8px;font-size:.76rem;font-weight:600;color:#bfdbfe;
  background:rgba(37,99,235,.16);border:1px solid rgba(96,165,250,.28);
}
.footer-col h4{font-size:.92rem;margin-bottom:16px;color:#e2e8f0}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{color:var(--muted);font-size:.88rem}
.footer-col ul li a:hover{color:var(--cyan)}
.footer-trust{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:38px;padding-top:26px;
  border-top:1px solid rgba(56,189,248,.12);
}
.footer-bottom{
  margin-top:24px;padding-top:20px;border-top:1px solid rgba(56,189,248,.1);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:.82rem;color:var(--dim);
}
/* ===== FAB ===== */
.fab-support{
  position:fixed;left:16px;bottom:96px;z-index:50;
  display:inline-flex;align-items:center;gap:10px;padding:12px 18px;border-radius:999px;
  font-size:.84rem;font-weight:700;color:#e0f2fe;
  background:rgba(7,7,13,.8);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid transparent;
  background-image:linear-gradient(rgba(7,7,13,.86),rgba(7,7,13,.86)),linear-gradient(120deg,#38bdf8,#2563eb 55%,#ec4899);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 20px rgba(6,182,212,.45);
  opacity:.78;transition:.25s ease;animation:fabPulse 2.8s ease-in-out infinite;
}
.fab-support i{font-size:1rem;color:#a5f3fc}
.fab-support:hover{opacity:1;transform:translateY(-2px);box-shadow:0 0 30px rgba(56,189,248,.7)}
.fab-support:active{transform:scale(.96) translateY(0)}
.fab-dot{
  position:absolute;top:-3px;right:-3px;width:12px;height:12px;border-radius:50%;
  background:#ef4444;box-shadow:0 0 0 3px rgba(3,7,18,.9);animation:dotBlink 1.4s steps(2,end) infinite;
}
@keyframes fabPulse{0%,100%{box-shadow:0 0 18px rgba(6,182,212,.4)}50%{box-shadow:0 0 28px rgba(236,72,153,.55)}}
@keyframes dotBlink{0%,100%{opacity:1}50%{opacity:.25}}
/* ===== RESPONSIVE ===== */
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr}
  .perf-grid{grid-template-columns:1fr;gap:26px}
  .fact-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .main-nav{
    position:absolute;top:74px;left:0;right:0;display:none;flex-direction:column;align-items:stretch;
    gap:6px;padding:16px 20px 22px;margin-left:0;
    background:rgba(4,9,22,.97);border-bottom:1px solid rgba(56,189,248,.18);
    box-shadow:0 24px 50px rgba(2,6,23,.75);
  }
  .main-nav.open{display:flex}
  .nav-link{padding:12px 14px;border-radius:12px;font-size:.95rem}
  .nav-toggle{display:inline-flex}
  .nav-actions{margin-left:auto}
  .btn-ghost{display:none}
}
@media (max-width:768px){
  .section{padding:52px 0}
  .article-wrap{padding:38px 0 28px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .stat-stack{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-cover img{aspect-ratio:16/10}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:520px){
  .container{padding:0 15px}
  .brand-text strong{max-width:150px;font-size:.84rem}
  .brand-text small{font-size:.65rem}
  .brand-mark{width:38px;height:38px;flex:0 0 38px}
  .article-hero h1{font-size:1.5rem}
  .fact-strip{grid-template-columns:1fr}
  .stat-stack{grid-template-columns:1fr}
  .article-shell{padding:20px 16px}
  .article-body ol{padding-left:2px}
  .footer-grid{grid-template-columns:1fr}
  .nav-actions .btn-solid{padding:9px 14px;font-size:.82rem}
  .fab-support{left:12px;bottom:80px;padding:11px 15px;font-size:.78rem}
}

/* roulang page: category1 */
:root{
  --bg-0:#030712;
  --bg-1:#081229;
  --bg-2:#0b1a34;
  --panel:rgba(11,23,45,.72);
  --panel-soft:rgba(15,32,60,.55);
  --line:rgba(56,189,248,.18);
  --line-strong:rgba(96,165,250,.42);
  --blue:#2563eb;
  --blue-deep:#1d4ed8;
  --cyan:#38bdf8;
  --holo:#60a5fa;
  --text:#f8fafc;
  --muted:#94a3b8;
  --dim:#64748b;
  --gold:#fbbf24;
  --radius-xs:10px;
  --radius-sm:14px;
  --radius:18px;
  --radius-lg:26px;
  --shadow:0 18px 50px rgba(2,6,23,.55);
  --glow:0 0 24px rgba(37,99,235,.45);
  --glow-cyan:0 0 22px rgba(56,189,248,.38);
  --font:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.65;
  color:var(--text);
  background:
    radial-gradient(1100px 520px at 12% -6%, rgba(37,99,235,.22), transparent 62%),
    radial-gradient(900px 480px at 92% 4%, rgba(56,189,248,.14), transparent 60%),
    var(--bg-0);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
button{font-family:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ===== HEADER / NAV ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(3,7,18,.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(56,189,248,.14);
}
.nav-wrap{display:flex;align-items:center;gap:16px;min-height:74px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;min-width:0}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  display:grid;place-items:center;font-size:1.05rem;color:#e0f2fe;
  background:linear-gradient(140deg,rgba(37,99,235,.85),rgba(56,189,248,.6));
  box-shadow:var(--glow);
  border:1px solid rgba(147,197,253,.35);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{
  font-size:.95rem;font-weight:700;letter-spacing:-.01em;color:#f1f5f9;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:270px;
}
.brand-text small{font-size:.72rem;color:var(--cyan);letter-spacing:.05em;text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  padding:9px 14px;border-radius:999px;font-size:.9rem;font-weight:500;color:var(--muted);
  border:1px solid transparent;white-space:nowrap;
}
.nav-link:hover{color:#e0f2fe;background:rgba(56,189,248,.08);border-color:rgba(56,189,248,.2)}
.nav-link.active{
  color:#e0f2fe;background:rgba(37,99,235,.24);
  border-color:var(--line-strong);box-shadow:inset 0 0 18px rgba(56,189,248,.16);
}
.nav-actions{display:flex;align-items:center;gap:9px;flex-shrink:0}
.btn-ghost{
  padding:9px 16px;border-radius:999px;font-size:.88rem;font-weight:600;color:#bfdbfe;
  border:1px solid rgba(96,165,250,.45);background:rgba(8,18,41,.5);transition:.22s ease;
}
.btn-ghost:hover{color:#fff;border-color:var(--cyan);box-shadow:0 0 16px rgba(56,189,248,.28)}
.btn-solid{
  padding:10px 19px;border-radius:999px;font-size:.88rem;font-weight:700;color:#02101f;
  background:linear-gradient(135deg,#38bdf8,#2563eb 70%);
  box-shadow:0 0 20px rgba(56,189,248,.45);transition:.22s ease;
}
.btn-solid:hover{transform:translateY(-1px);box-shadow:0 0 26px rgba(56,189,248,.62);color:#02101f}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;align-items:center;justify-content:center;
  color:#bfdbfe;border:1px solid rgba(96,165,250,.35);background:rgba(8,18,41,.6);font-size:1.05rem;
}

/* ===== HERO ===== */
.hero{position:relative;overflow:hidden;padding:68px 0 62px;border-bottom:1px solid rgba(56,189,248,.12)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.32}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(3,7,18,.74) 0%,rgba(3,7,18,.9) 60%,var(--bg-0) 100%);
}
.hero-inner{position:relative;z-index:2;text-align:center;max-width:940px;margin:0 auto}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:999px;
  font-size:.76rem;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:#a5f3fc;
  background:rgba(8,47,73,.55);border:1px solid rgba(56,189,248,.4);box-shadow:var(--glow-cyan);
}
.hero h1{margin:22px 0 0;font-size:clamp(1.7rem,4.4vw,2.85rem);font-weight:800;color:#f8fafc;text-shadow:0 6px 30px rgba(2,6,23,.8)}
.hero h1 span{background:linear-gradient(100deg,#38bdf8,#a5f3fc 45%,#60a5fa);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{margin:18px auto 0;max-width:790px;font-size:1.02rem;line-height:1.75;color:#cbd5e1}
.hero-cta{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:26px}
.btn-primary-lg{
  display:inline-flex;align-items:center;gap:10px;padding:14px 28px;border-radius:999px;
  font-weight:700;font-size:.97rem;color:#02101f;
  background:linear-gradient(135deg,#a5f3fc,#38bdf8 40%,#2563eb);
  box-shadow:0 0 28px rgba(56,189,248,.5);transition:.24s ease;
}
.btn-primary-lg:hover{transform:translateY(-2px);box-shadow:0 0 36px rgba(56,189,248,.72);color:#02101f}
.btn-outline-lg{
  display:inline-flex;align-items:center;gap:10px;padding:13px 26px;border-radius:999px;
  font-weight:700;font-size:.97rem;color:#dbeafe;border:1px solid rgba(96,165,250,.5);
  background:rgba(9,20,40,.6);transition:.24s ease;
}
.btn-outline-lg:hover{color:#fff;border-color:var(--cyan);box-shadow:0 0 22px rgba(56,189,248,.35);transform:translateY(-2px)}

/* Before / After */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:36px;text-align:left}
.compare-card{
  position:relative;padding:24px 22px;border-radius:var(--radius);border:1px solid var(--line);
  background:var(--panel);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow);
}
.compare-card.is-after{border-color:var(--line-strong);background:linear-gradient(160deg,rgba(37,99,235,.2),rgba(11,23,45,.86))}
.compare-tag{
  display:inline-flex;align-items:center;gap:7px;font-size:.72rem;font-weight:700;letter-spacing:.1em;
  text-transform:uppercase;padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.compare-card .compare-tag{color:#cbd5e1;background:rgba(100,116,139,.22);border:1px solid rgba(148,163,184,.35)}
.compare-card.is-after .compare-tag{color:#a5f3fc;background:rgba(8,47,73,.7);border:1px solid rgba(56,189,248,.5)}
.compare-card h3{font-size:1.06rem;margin-bottom:12px}
.compare-list li{position:relative;padding-left:26px;font-size:.92rem;color:var(--muted);margin-bottom:9px;line-height:1.6}
.compare-card.is-after .compare-list li{color:#dbeafe}
.compare-list li i{position:absolute;left:0;top:3px;font-size:.8rem;color:#f87171}
.compare-card.is-after .compare-list li i{color:var(--cyan)}

/* ===== STAT STRIP ===== */
.stat-strip{border-bottom:1px solid rgba(56,189,248,.1);padding:26px 0;background:rgba(8,18,41,.45)}
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.stat-item{padding:16px 18px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--panel-soft)}
.stat-num{font-size:1.42rem;font-weight:800;color:#e0f2fe;display:block;line-height:1.2}
.stat-num em{font-style:normal;font-size:.85rem;color:var(--cyan)}
.stat-label{font-size:.8rem;color:var(--muted);margin-top:4px;display:block}

/* ===== SECTION BASE ===== */
.section{padding:74px 0;border-bottom:1px solid rgba(56,189,248,.08)}
.section.alt{background:linear-gradient(180deg,rgba(8,18,41,.55),rgba(3,7,18,.2))}
.section-head{max-width:760px;margin-bottom:36px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:.74rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--cyan);margin-bottom:12px;
}
.section-title{font-size:clamp(1.35rem,2.6vw,1.95rem);font-weight:800;color:#f1f5f9}
.section-sub{margin-top:14px;color:var(--muted);font-size:.98rem;line-height:1.75}

/* ===== FEATURE SPLIT ===== */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:center}
.split-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow)}
.split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
.split-media::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,rgba(3,7,18,.08),rgba(3,7,18,.72))}
.media-badge{
  position:absolute;left:16px;bottom:16px;z-index:2;display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;font-size:.78rem;font-weight:600;color:#a5f3fc;
  background:rgba(3,7,18,.78);border:1px solid rgba(56,189,248,.45);backdrop-filter:blur(8px);
}
.feature-list{display:grid;gap:14px;margin-top:24px}
.feature-item{
  display:flex;gap:14px;padding:18px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:var(--panel-soft);transition:.24s ease;
}
.feature-item:hover{border-color:var(--line-strong);transform:translateX(4px);box-shadow:0 12px 34px rgba(2,6,23,.5)}
.feature-icon{
  width:42px;height:42px;flex:0 0 42px;border-radius:12px;display:grid;place-items:center;font-size:1rem;
  color:#a5f3fc;background:rgba(37,99,235,.22);border:1px solid var(--line-strong);
}
.feature-item h3{font-size:1rem;margin-bottom:6px}
.feature-item p{font-size:.9rem;color:var(--muted);line-height:1.65}

/* ===== DEVICE GRID ===== */
.device-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.device-card{
  padding:24px 22px;border-radius:var(--radius);border:1px solid var(--line);
  background:var(--panel);transition:.25s ease;
}
.device-card:hover{border-color:var(--line-strong);transform:translateY(-4px);box-shadow:var(--glow)}
.device-card h3{font-size:1.02rem;display:flex;align-items:center;gap:10px;margin-bottom:16px}
.device-card h3 i{color:var(--cyan)}
.device-list li{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed rgba(148,163,184,.18);font-size:.88rem}
.device-list li:last-child{border-bottom:0}
.device-list span:first-child{color:var(--muted)}
.device-list span:last-child{color:#e2e8f0;font-weight:600;text-align:right}
.note-inline{
  margin-top:22px;padding:16px 18px;border-radius:var(--radius-sm);font-size:.9rem;color:#cbd5e1;
  background:rgba(37,99,235,.12);border:1px solid var(--line-strong);border-left:3px solid var(--cyan);
}

/* ===== STEPS ===== */
.steps{display:grid;gap:16px;counter-reset:step}
.step{
  display:grid;grid-template-columns:56px 1fr;gap:18px;padding:22px;
  border-radius:var(--radius);border:1px solid var(--line);background:var(--panel-soft);transition:.24s ease;
}
.step:hover{border-color:var(--line-strong);background:rgba(15,32,60,.72)}
.step-no{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;font-weight:800;font-size:1.15rem;
  color:#e0f2fe;background:linear-gradient(150deg,rgba(37,99,235,.7),rgba(56,189,248,.35));
  border:1px solid var(--line-strong);box-shadow:inset 0 0 18px rgba(56,189,248,.2);
}
.step h3{font-size:1.03rem;margin-bottom:8px}
.step p{font-size:.92rem;color:var(--muted);line-height:1.7}
.step p + p{margin-top:8px}
.step code{
  display:inline-block;padding:2px 9px;border-radius:8px;font-size:.84rem;color:#a5f3fc;
  background:rgba(8,47,73,.6);border:1px solid rgba(56,189,248,.34);
}

/* ===== TROUBLE LIST ===== */
.trouble-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.trouble-item{padding:20px;border-radius:var(--radius-sm);border:1px solid var(--line);background:rgba(15,32,60,.42)}
.trouble-item h3{font-size:.98rem;margin-bottom:10px;display:flex;gap:9px;align-items:flex-start;color:#fca5a5}
.trouble-item h3 i{font-size:.85rem;margin-top:5px;color:#f87171}
.trouble-item p{font-size:.9rem;color:var(--muted);line-height:1.68}
.trouble-item p strong{color:#e2e8f0}

/* ===== TIP CHECKLIST ===== */
.tip-layout{display:grid;grid-template-columns:.95fr 1.05fr;gap:34px;align-items:start}
.tip-media{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow)}
.tip-media img{aspect-ratio:4/3;object-fit:cover;width:100%}
.tip-list{display:grid;gap:12px}
.tip-row{
  display:flex;gap:13px;align-items:flex-start;padding:15px 17px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:rgba(9,20,40,.6);font-size:.92rem;color:#cbd5e1;
}
.tip-row i{color:#4ade80;margin-top:4px;font-size:.9rem}
.tip-row strong{color:#f8fafc;display:block;margin-bottom:3px;font-size:.95rem}

/* ===== VERSION LOG ===== */
.log-list{display:grid;gap:1px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--line)}
.log-row{
  display:grid;grid-template-columns:150px 1fr 150px;gap:16px;padding:16px 20px;
  background:rgba(9,20,40,.72);font-size:.9rem;align-items:center;
}
.log-row strong{color:#e0f2fe;font-weight:600}
.log-row span{color:var(--muted)}
.log-tag{
  justify-self:end;font-size:.74rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  padding:4px 11px;border-radius:999px;color:#a5f3fc;background:rgba(8,47,73,.7);border:1px solid rgba(56,189,248,.42);
}

/* ===== CODE 88K BLOCK ===== */
.code-block{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);border:1px solid var(--line-strong);
  background:linear-gradient(140deg,rgba(37,99,235,.24),rgba(3,7,18,.9) 62%);
  padding:38px;box-shadow:var(--shadow);
}
.code-block::before{
  content:"";position:absolute;width:340px;height:340px;right:-120px;top:-140px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,189,248,.3),transparent 68%);
}
.code-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center}
.code-inner h2{font-size:clamp(1.3rem,2.4vw,1.8rem);margin-bottom:14px}
.code-inner p{color:#cbd5e1;font-size:.97rem;line-height:1.75}
.code-chip{
  display:inline-flex;align-items:center;gap:10px;margin-top:18px;padding:11px 20px;border-radius:14px;
  font-weight:800;letter-spacing:.22em;font-size:1.05rem;color:#02101f;
  background:linear-gradient(135deg,#a5f3fc,#38bdf8 55%,#2563eb);box-shadow:0 0 26px rgba(56,189,248,.5);
}
.code-form{
  padding:24px;border-radius:var(--radius);border:1px solid var(--line-strong);
  background:rgba(3,7,18,.72);backdrop-filter:blur(12px);
}
.code-form label{display:block;font-size:.82rem;font-weight:600;color:#bfdbfe;margin-bottom:7px}
.code-form input{
  width:100%;padding:12px 15px;border-radius:12px;font-size:.94rem;color:#f1f5f9;
  background:rgba(8,18,41,.9);border:1px solid rgba(96,165,250,.35);transition:.2s ease;
}
.code-form input::placeholder{color:var(--dim)}
.code-form input:focus{border-color:var(--cyan);box-shadow:0 0 16px rgba(56,189,248,.28)}
.code-form .field{margin-bottom:15px}
.btn-cta{
  width:100%;padding:13px 20px;border-radius:999px;font-weight:700;font-size:.96rem;color:#02101f;
  background:linear-gradient(135deg,#a5f3fc,#38bdf8 45%,#2563eb);
  box-shadow:0 0 24px rgba(56,189,248,.5);transition:.24s ease;
}
.btn-cta:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(56,189,248,.72)}
.code-form small{display:block;margin-top:12px;font-size:.78rem;color:var(--dim);line-height:1.6}

/* ===== CATEGORY MATRIX ===== */
.cat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.cat-card{
  display:flex;flex-direction:column;gap:12px;padding:24px 22px;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--panel);transition:.26s ease;
}
.cat-card:hover{border-color:var(--line-strong);transform:translateY(-5px);box-shadow:var(--glow)}
.cat-card i{font-size:1.3rem;color:var(--cyan)}
.cat-card h3{font-size:1.05rem}
.cat-card p{font-size:.9rem;color:var(--muted);line-height:1.68;flex:1}
.cat-link{font-size:.88rem;font-weight:700;color:#a5f3fc;display:inline-flex;align-items:center;gap:8px}
.cat-link i{font-size:.8rem;transition:transform .22s ease}
.cat-card:hover .cat-link i{transform:translateX(4px)}

/* ===== TRUST ===== */
.trust-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.trust-box{padding:20px;border-radius:var(--radius-sm);border:1px solid var(--line);background:rgba(15,32,60,.42);text-align:left}
.trust-box i{font-size:1.15rem;color:var(--cyan);margin-bottom:10px;display:block}
.trust-box h3{font-size:.96rem;margin-bottom:7px}
.trust-box p{font-size:.86rem;color:var(--muted);line-height:1.62}

/* ===== FAQ ===== */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-sm);background:rgba(11,23,45,.6);overflow:hidden;transition:.22s ease}
.faq-item[open]{border-color:var(--line-strong);box-shadow:0 12px 34px rgba(2,6,23,.45)}
.faq-q{
  display:flex;justify-content:space-between;gap:16px;align-items:center;cursor:pointer;
  padding:17px 20px;font-size:.96rem;font-weight:600;color:#e2e8f0;list-style:none;
}
.faq-q::-webkit-details-marker{display:none}
.faq-q::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;font-size:.78rem;color:var(--cyan);
  flex:0 0 auto;transition:transform .24s ease;
}
.faq-item[open] .faq-q::after{content:"\f068";transform:rotate(180deg)}
.faq-a{padding:0 20px 18px;font-size:.91rem;color:var(--muted);line-height:1.72}

/* ===== FINAL CTA ===== */
.final-cta{padding:70px 0;background:linear-gradient(160deg,rgba(37,99,235,.22),rgba(3,7,18,.94))}
.final-box{
  max-width:860px;margin:0 auto;text-align:center;padding:44px 32px;border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);background:rgba(3,7,18,.72);box-shadow:var(--shadow);
}
.final-box h2{font-size:clamp(1.3rem,2.5vw,1.9rem);margin-bottom:14px}
.final-box p{color:var(--muted);font-size:.97rem;line-height:1.75;max-width:660px;margin:0 auto}
.final-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:26px}

/* ===== FAB ===== */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:50;
  display:inline-flex;align-items:center;gap:10px;padding:12px 20px 12px 15px;border-radius:999px;
  color:#e0f2fe;font-size:.86rem;font-weight:700;letter-spacing:.02em;
  background:rgba(7,7,13,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  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 22px rgba(56,189,248,.42);
  opacity:.8;min-height:52px;transition:.26s ease;
  animation:fabFloat 3.6s ease-in-out infinite;
}
.fab:hover{opacity:1;transform:scale(1.06);box-shadow:0 0 32px rgba(56,189,248,.7)}
.fab:active{transform:scale(.96) translateY(1px)}
.fab i{color:var(--cyan);font-size:1.02rem}
.fab .fab-dot{
  position:absolute;top:6px;right:10px;width:10px;height:10px;border-radius:50%;background:#f43f5e;
  box-shadow:0 0 10px rgba(244,63,94,.9);animation:pulseDot 1.6s infinite;
}
@keyframes fabFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@keyframes pulseDot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(1.25)}}

/* ===== FOOTER ===== */
.site-footer{border-top:1px solid rgba(56,189,248,.14);background:linear-gradient(180deg,rgba(8,18,41,.6),rgba(3,7,18,.98));padding:56px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{margin-top:16px;font-size:.88rem;color:var(--muted);line-height:1.72;max-width:400px}
.pay-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.pay-badge{
  font-size:.74rem;font-weight:600;padding:5px 12px;border-radius:999px;color:#bfdbfe;
  background:rgba(8,18,41,.8);border:1px solid rgba(96,165,250,.34);
}
.footer-col h4{font-size:.92rem;color:#e2e8f0;margin-bottom:14px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:9px}
.footer-col ul li a{font-size:.87rem;color:var(--muted)}
.footer-col ul li a:hover{color:var(--cyan)}
.footer-col ul li span{font-size:.87rem;color:var(--muted)}
.footer-trust{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;padding:18px 0;
  border-top:1px solid rgba(56,189,248,.12);border-bottom:1px solid rgba(56,189,248,.12);
}
.trust-chip{
  display:inline-flex;align-items:center;gap:8px;font-size:.78rem;color:#cbd5e1;
  padding:6px 13px;border-radius:999px;background:rgba(8,18,41,.7);border:1px solid rgba(96,165,250,.26);
}
.trust-chip i{color:var(--cyan);font-size:.76rem}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:22px;font-size:.8rem;color:var(--dim)}
.footer-bottom a{color:var(--muted)}
.footer-bottom a:hover{color:var(--cyan)}

/* ===== RESPONSIVE ===== */
@media (max-width:1024px){
  .main-nav{
    position:fixed;top:74px;left:0;right:0;flex-direction:column;align-items:stretch;gap:4px;
    padding:14px 18px 20px;margin-left:0;display:none;
    background:rgba(3,7,18,.97);backdrop-filter:blur(18px);
    border-bottom:1px solid rgba(56,189,248,.2);box-shadow:0 24px 50px rgba(2,6,23,.7);
  }
  .main-nav.open{display:flex}
  .nav-link{padding:12px 14px;border-radius:12px}
  .nav-toggle{display:inline-flex}
  .split,.tip-layout,.code-inner{grid-template-columns:1fr;gap:26px}
  .device-grid,.cat-grid,.trust-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .log-row{grid-template-columns:120px 1fr;}
  .log-tag{grid-column:1 / -1;justify-self:start;margin-top:6px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .hero{padding:52px 0 48px}
  .compare-grid,.trouble-grid{grid-template-columns:1fr}
  .code-block{padding:26px 20px}
  .step{grid-template-columns:44px 1fr;gap:14px;padding:18px}
  .step-no{width:44px;height:44px;border-radius:13px;font-size:1rem}
  .brand-text strong{max-width:180px;font-size:.86rem}
  .footer-grid{grid-template-columns:1fr}
  .fab{bottom:84px;padding:11px 16px 11px 13px;font-size:.8rem}
}
@media (max-width:520px){
  .container{padding:0 15px}
  .hero h1{font-size:1.5rem}
  .hero-cta{flex-direction:column;align-items:stretch}
  .btn-primary-lg,.btn-outline-lg{justify-content:center}
  .device-grid,.cat-grid,.trust-grid,.stat-grid{grid-template-columns:1fr}
  .hero-search{flex-wrap:wrap;border-radius:18px;padding:12px}
  .hero-search button{width:100%}
  .nav-actions .btn-ghost{display:inline-flex;padding:8px 12px;font-size:.8rem}
  .nav-actions .btn-solid{padding:9px 14px;font-size:.8rem}
  .brand-mark{width:36px;height:36px;flex:0 0 36px;border-radius:11px}
  .final-box{padding:30px 20px}
  .fab{left:12px;bottom:76px}
}

/* roulang page: category3 */
:root{
  --bg-0:#030712;
  --bg-1:#081229;
  --bg-2:#0b1a34;
  --panel:rgba(11,23,45,.72);
  --panel-soft:rgba(15,32,60,.55);
  --line:rgba(56,189,248,.18);
  --line-strong:rgba(96,165,250,.42);
  --blue:#2563eb;
  --blue-deep:#1d4ed8;
  --cyan:#38bdf8;
  --holo:#60a5fa;
  --text:#f8fafc;
  --muted:#94a3b8;
  --dim:#64748b;
  --gold:#fbbf24;
  --radius-xs:10px;
  --radius-sm:14px;
  --radius:18px;
  --radius-lg:26px;
  --shadow:0 18px 50px rgba(2,6,23,.55);
  --glow:0 0 24px rgba(37,99,235,.45);
  --glow-cyan:0 0 22px rgba(56,189,248,.38);
  --font:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.65;
  color:var(--text);
  background:
    radial-gradient(1100px 520px at 12% -6%, rgba(37,99,235,.22), transparent 62%),
    radial-gradient(900px 480px at 92% 4%, rgba(56,189,248,.14), transparent 60%),
    var(--bg-0);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
button{font-family:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4{line-height:1.28;margin:0;font-weight:800;letter-spacing:-.015em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ===== HEADER / NAV ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(3,7,18,.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(56,189,248,.14);
}
.nav-wrap{display:flex;align-items:center;gap:16px;min-height:74px;position:relative}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;min-width:0}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  display:grid;place-items:center;font-size:1.05rem;color:#e0f2fe;
  background:linear-gradient(140deg,rgba(37,99,235,.85),rgba(56,189,248,.6));
  box-shadow:var(--glow);
  border:1px solid rgba(147,197,253,.35);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{
  font-size:.95rem;font-weight:700;letter-spacing:-.01em;color:#f1f5f9;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:270px;
}
.brand-text small{font-size:.72rem;color:var(--cyan);letter-spacing:.05em;text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  padding:9px 14px;border-radius:999px;font-size:.9rem;font-weight:500;color:var(--muted);
  border:1px solid transparent;white-space:nowrap;
}
.nav-link:hover{color:#e0f2fe;background:rgba(56,189,248,.08);border-color:rgba(56,189,248,.2)}
.nav-link.active{
  color:#e0f2fe;background:rgba(37,99,235,.24);
  border-color:var(--line-strong);box-shadow:inset 0 0 18px rgba(56,189,248,.16);
}
.nav-actions{display:flex;align-items:center;gap:9px;flex-shrink:0}
.btn-ghost{
  padding:9px 16px;border-radius:999px;font-size:.88rem;font-weight:600;color:#bfdbfe;
  border:1px solid rgba(96,165,250,.45);background:rgba(8,18,41,.5);transition:.22s ease;
}
.btn-ghost:hover{color:#fff;border-color:var(--cyan);box-shadow:0 0 16px rgba(56,189,248,.28)}
.btn-solid{
  padding:10px 19px;border-radius:999px;font-size:.88rem;font-weight:700;color:#02101f;
  background:linear-gradient(135deg,#38bdf8,#2563eb 70%);
  box-shadow:0 0 20px rgba(56,189,248,.45);transition:.22s ease;
}
.btn-solid:hover{transform:translateY(-1px);box-shadow:0 0 26px rgba(56,189,248,.62);color:#02101f}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;align-items:center;justify-content:center;
  color:#bfdbfe;border:1px solid rgba(96,165,250,.35);background:rgba(8,18,41,.6);font-size:1.05rem;
}

/* ===== SECTION BASE ===== */
.section{padding:72px 0;position:relative;border-bottom:1px solid rgba(56,189,248,.1)}
.section.alt{background:linear-gradient(180deg,rgba(8,18,41,.72),rgba(3,7,18,.9))}
.sec-head{max-width:800px;margin-bottom:38px}
.sec-head.align-left{text-align:left;margin-left:0;margin-right:auto}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:.72rem;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;color:#7dd3fc;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--cyan),transparent)}
.sec-head h2{font-size:clamp(1.4rem,2.7vw,2.05rem);color:#f8fafc}
.sec-head p{margin-top:14px;color:var(--muted);font-size:1rem;line-height:1.7}

/* ===== HERO ===== */
.hero{position:relative;overflow:hidden;padding:64px 0 68px;border-bottom:1px solid rgba(56,189,248,.12)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.32}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(3,7,18,.75) 0%,rgba(3,7,18,.92) 58%,var(--bg-0) 100%);
}
.hero-inner{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:44px;align-items:start}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:999px;
  font-size:.73rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#a5f3fc;
  background:rgba(8,47,73,.55);border:1px solid rgba(56,189,248,.4);box-shadow:var(--glow-cyan);
}
.hero h1{margin:20px 0 0;font-size:clamp(1.72rem,4vw,2.75rem);color:#f8fafc;text-shadow:0 6px 30px rgba(2,6,23,.8)}
.hero h1 span{
  background:linear-gradient(100deg,#38bdf8,#a5f3fc 45%,#60a5fa);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{margin-top:18px;max-width:620px;font-size:1.01rem;line-height:1.75;color:#cbd5e1}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.fact-chip{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  font-size:.82rem;font-weight:600;color:#cbd5e1;background:var(--panel-soft);
  border:1px solid var(--line);
}
.fact-chip i{color:var(--cyan)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.btn-primary-lg{
  display:inline-flex;align-items:center;gap:10px;padding:14px 28px;border-radius:999px;
  font-weight:700;font-size:.97rem;color:#02101f;
  background:linear-gradient(135deg,#a5f3fc,#38bdf8 40%,#2563eb);
  box-shadow:0 0 28px rgba(56,189,248,.5);transition:.24s ease;
}
.btn-primary-lg:hover{transform:translateY(-2px);box-shadow:0 0 36px rgba(56,189,248,.7);color:#02101f}
.btn-outline-lg{
  display:inline-flex;align-items:center;gap:10px;padding:13px 25px;border-radius:999px;
  font-weight:600;font-size:.95rem;color:#bfdbfe;
  border:1px solid rgba(96,165,250,.45);background:rgba(8,18,41,.55);transition:.24s ease;
}
.btn-outline-lg:hover{color:#fff;border-color:var(--cyan);box-shadow:0 0 20px rgba(56,189,248,.3)}

/* compare cards */
.compare-stack{display:grid;gap:16px}
.compare-card{
  position:relative;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:24px 24px 22px;backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.compare-card.recommended{
  border-color:var(--line-strong);
  background:linear-gradient(160deg,rgba(15,32,60,.92),rgba(8,18,41,.86));
  box-shadow:var(--glow),inset 0 0 40px rgba(37,99,235,.14);
}
.ribbon{
  position:absolute;top:-13px;right:20px;padding:5px 14px;border-radius:999px;
  font-size:.68rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:#02101f;
  background:linear-gradient(135deg,#a5f3fc,#38bdf8);
}
.compare-card h3{font-size:1.06rem;color:#f1f5f9;margin-bottom:6px}
.compare-card .sub{font-size:.86rem;color:var(--muted);margin-bottom:16px}
.check-list{display:grid;gap:10px;margin-bottom:18px}
.check-list li{display:flex;gap:10px;font-size:.9rem;color:#cbd5e1;align-items:flex-start}
.check-list li i{color:var(--cyan);margin-top:4px;font-size:.82rem}
.check-list li.off i{color:var(--dim)}
.check-list li.off{color:var(--dim)}
.btn-full{
  display:flex;align-items:center;justify-content:center;gap:9px;width:100%;
  padding:12px 18px;border-radius:14px;font-weight:700;font-size:.92rem;color:#02101f;
  background:linear-gradient(135deg,#38bdf8,#2563eb 72%);transition:.22s ease;
}
.btn-full:hover{box-shadow:0 0 24px rgba(56,189,248,.6);color:#02101f}
.btn-full.muted{
  background:transparent;color:#bfdbfe;border:1px solid rgba(96,165,250,.4);font-weight:600;
}
.btn-full.muted:hover{border-color:var(--cyan);box-shadow:0 0 18px rgba(56,189,248,.25);color:#fff}

/* ===== METRICS ===== */
.metric-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.metric{
  padding:22px 20px;border-radius:var(--radius);background:var(--panel-soft);
  border:1px solid var(--line);transition:.25s ease;
}
.metric:hover{border-color:var(--line-strong);box-shadow:var(--glow);transform:translateY(-3px)}
.metric i{color:var(--cyan);font-size:1.1rem}
.metric b{display:block;margin-top:12px;font-size:1.6rem;font-weight:800;color:#f8fafc;letter-spacing:-.02em}
.metric span{display:block;margin-top:4px;font-size:.84rem;color:var(--muted);line-height:1.55}

/* ===== GRIDS & CARDS ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.tile{
  padding:24px;border-radius:var(--radius);background:var(--panel);
  border:1px solid var(--line);backdrop-filter:blur(12px);
  transition:.26s ease;height:100%;
}
.tile:hover{border-color:var(--line-strong);transform:translateY(-4px);box-shadow:var(--glow)}
.tile .tile-icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(37,99,235,.6),rgba(56,189,248,.35));
  border:1px solid rgba(147,197,253,.3);color:#e0f2fe;font-size:1rem;margin-bottom:16px;
}
.tile h3{font-size:1.02rem;color:#f1f5f9;margin-bottom:8px}
.tile p{font-size:.9rem;color:var(--muted);line-height:1.68}
.tile .tag-row{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}
.tag{
  font-size:.72rem;font-weight:600;letter-spacing:.04em;padding:5px 11px;border-radius:999px;
  color:#a5f3fc;background:rgba(8,47,73,.5);border:1px solid rgba(56,189,248,.3);
}
.tag.gold{color:#fde68a;background:rgba(120,53,15,.35);border-color:rgba(251,191,36,.35)}

/* scenarios */
.scenario{display:grid;grid-template-columns:.4fr .6fr;gap:26px;align-items:center;padding:26px 0;border-top:1px solid rgba(56,189,248,.12)}
.scenario:first-of-type{border-top:0;padding-top:0}
.scenario h3{font-size:1.12rem;color:#f1f5f9}
.scenario .scenario-num{font-size:.78rem;font-weight:700;letter-spacing:.16em;color:var(--cyan);text-transform:uppercase;margin-bottom:10px}
.scenario p{font-size:.94rem;color:var(--muted);line-height:1.7}
.scenario ul{display:grid;gap:9px;margin-top:14px}
.scenario ul li{display:flex;gap:10px;font-size:.88rem;color:#cbd5e1}
.scenario ul li i{color:var(--cyan);margin-top:4px;font-size:.78rem}

/* shots */
.shot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.shot{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:var(--panel);transition:.28s ease;
}
.shot:hover{border-color:var(--line-strong);transform:translateY(-4px);box-shadow:var(--glow)}
.shot img{width:100%;aspect-ratio:16/10;object-fit:cover;opacity:.92}
.shot figcaption{padding:16px 18px}
.shot figcaption strong{display:block;font-size:.95rem;color:#f1f5f9;margin-bottom:5px}
.shot figcaption span{font-size:.84rem;color:var(--muted);line-height:1.6}

/* plans */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}
.plan{
  display:flex;flex-direction:column;padding:26px 24px;border-radius:var(--radius-lg);
  background:var(--panel);border:1px solid var(--line);transition:.26s ease;
}
.plan:hover{border-color:var(--line-strong);transform:translateY(-4px);box-shadow:var(--glow)}
.plan.featured{
  border-color:var(--line-strong);
  background:linear-gradient(165deg,rgba(15,32,60,.94),rgba(8,18,41,.88));
  box-shadow:var(--glow),inset 0 0 42px rgba(37,99,235,.14);
}
.plan .plan-label{font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#7dd3fc}
.plan h3{font-size:1.1rem;color:#f1f5f9;margin-top:10px}
.plan .price{margin:16px 0 6px;font-size:1.7rem;font-weight:800;color:#f8fafc;letter-spacing:-.02em}
.plan .price small{font-size:.82rem;font-weight:500;color:var(--muted);margin-left:6px}
.plan .plan-note{font-size:.84rem;color:var(--muted);line-height:1.6;margin-bottom:18px}
.plan ul{display:grid;gap:10px;margin-bottom:22px}
.plan ul li{display:flex;gap:10px;font-size:.87rem;color:#cbd5e1;align-items:flex-start}
.plan ul li i{color:var(--cyan);margin-top:4px;font-size:.78rem}
.plan .plan-foot{margin-top:auto}
.plan .pay-note{margin-top:12px;font-size:.78rem;color:var(--dim);text-align:center}

/* reviews */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.review{
  padding:24px;border-radius:var(--radius);background:var(--panel-soft);
  border:1px solid var(--line);display:flex;flex-direction:column;gap:14px;
}
.review .stars{color:var(--gold);font-size:.82rem;letter-spacing:.16em}
.review p{font-size:.9rem;color:#cbd5e1;line-height:1.7}
.review .who{display:flex;align-items:center;gap:12px;margin-top:auto}
.review .who .avatar{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;font-weight:700;font-size:.85rem;
  color:#02101f;background:linear-gradient(135deg,#a5f3fc,#38bdf8);
}
.review .who b{display:block;font-size:.88rem;color:#f1f5f9}
.review .who span{display:block;font-size:.76rem;color:var(--dim)}

/* spec rows */
.spec-list{display:grid;gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--panel-soft)}
.spec-row{
  display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:14px;padding:16px 20px;
  border-bottom:1px solid rgba(56,189,248,.12);align-items:center;font-size:.88rem;
}
.spec-row:last-child{border-bottom:0}
.spec-row.head{background:rgba(8,18,41,.85);font-size:.76rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#7dd3fc}
.spec-row span{color:var(--muted)}
.spec-row span:first-child{color:#e2e8f0;font-weight:600}
.spec-row .good{color:#7dd3fc;font-weight:600}

/* FAQ */
.faq-wrap{display:grid;gap:12px;max-width:920px}
.faq-item{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:.22s ease;
}
.faq-item[open]{border-color:var(--line-strong);box-shadow:var(--glow)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;font-weight:600;font-size:.96rem;color:#e2e8f0;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"\2b";font-family:"Font Awesome 6 Free";font-weight:900;color:var(--cyan);
  font-size:.85rem;flex-shrink:0;transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"\f068"}
.faq-item .faq-body{padding:0 22px 20px;font-size:.9rem;color:var(--muted);line-height:1.72}

/* CTA band */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  padding:44px 40px;border:1px solid var(--line-strong);
  background:linear-gradient(140deg,rgba(37,99,235,.28),rgba(8,18,41,.85) 62%);
  box-shadow:var(--glow);
}
.cta-band::before{
  content:"";position:absolute;top:-70px;right:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,189,248,.35),transparent 66%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center}
.cta-inner h2{font-size:clamp(1.3rem,2.4vw,1.85rem);color:#f8fafc}
.cta-inner p{margin-top:14px;font-size:.95rem;color:#cbd5e1;line-height:1.72}
.cta-box{
  padding:22px;border-radius:var(--radius);background:rgba(3,7,18,.72);
  border:1px solid var(--line);backdrop-filter:blur(12px);
}
.cta-box .code-line{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 16px;border-radius:var(--radius-xs);background:rgba(8,47,73,.5);
  border:1px dashed rgba(56,189,248,.45);margin:14px 0 16px;
}
.cta-box .code-line b{font-size:1.15rem;font-weight:800;color:#a5f3fc;letter-spacing:.08em}
.cta-box .code-line span{font-size:.78rem;color:var(--muted)}
.cta-box p{font-size:.84rem;color:var(--muted);line-height:1.65;margin-top:0}

/* ===== FAB ===== */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:50;
  width:58px;height:58px;border-radius:20px;display:grid;place-items:center;
  background:rgba(7,7,13,.82);backdrop-filter:blur(12px);
  border:2px solid rgba(56,189,248,.6);
  box-shadow:0 0 20px rgba(56,189,248,.45);
  opacity:.8;transition:.25s ease;animation:fabPulse 3.2s infinite;
}
.fab .fab-core{font-size:.82rem;font-weight:800;letter-spacing:.04em;color:#a5f3fc}
.fab .fab-dot{
  position:absolute;top:-4px;right:-4px;width:12px;height:12px;border-radius:50%;
  background:#f43f5e;box-shadow:0 0 12px rgba(244,63,94,.9);
}
.fab:hover{opacity:1;transform:scale(1.08);box-shadow:0 0 30px rgba(56,189,248,.75);border-color:#a5f3fc}
.fab:active{transform:scale(.94)}
@keyframes fabPulse{
  0%,100%{box-shadow:0 0 18px rgba(56,189,248,.4)}
  50%{box-shadow:0 0 30px rgba(56,189,248,.72)}
}

/* ===== FOOTER ===== */
.site-footer{
  padding:64px 0 28px;background:linear-gradient(180deg,rgba(3,7,18,.85),rgba(8,18,41,.92));
  border-top:1px solid rgba(56,189,248,.14);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:.86rem;color:var(--muted);line-height:1.72;max-width:400px}
.pay-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.pay-badge{
  font-size:.74rem;font-weight:600;padding:6px 12px;border-radius:8px;color:#bfdbfe;
  background:rgba(8,18,41,.7);border:1px solid rgba(96,165,250,.3);
}
.footer-col h4{font-size:.92rem;color:#f1f5f9;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col ul li a{font-size:.86rem;color:var(--muted)}
.footer-col ul li a:hover{color:var(--cyan)}
.footer-trust{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:42px;padding-top:24px;
  border-top:1px solid rgba(56,189,248,.12);
}
.trust-chip{
  display:inline-flex;align-items:center;gap:8px;font-size:.79rem;color:#cbd5e1;
  padding:8px 14px;border-radius:999px;background:var(--panel-soft);border:1px solid var(--line);
}
.trust-chip i{color:var(--cyan)}
.footer-bottom{
  margin-top:22px;padding-top:20px;border-top:1px solid rgba(56,189,248,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:.79rem;color:var(--dim);
}
.footer-bottom .age{font-weight:700;color:#fca5a5}

/* ===== RESPONSIVE ===== */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .metric-row{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .shot-grid{grid-template-columns:repeat(2,1fr)}
  .plan-grid{grid-template-columns:1fr;max-width:560px}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-inner{grid-template-columns:1fr}
  .main-nav{
    position:absolute;top:calc(100% + 1px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:6px;margin:0;padding:16px 20px 20px;
    background:rgba(3,7,18,.97);border-bottom:1px solid var(--line);
    backdrop-filter:blur(18px);display:none;
  }
  .main-nav.open{display:flex}
  .nav-link{padding:12px 14px}
  .nav-toggle{display:inline-flex}
  .brand-text strong{max-width:190px;font-size:.86rem}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .hero{padding:48px 0 54px}
  .grid-3,.grid-2,.shot-grid,.review-grid{grid-template-columns:1fr}
  .metric-row{grid-template-columns:1fr}
  .scenario{grid-template-columns:1fr;gap:14px}
  .spec-row{grid-template-columns:1fr;gap:6px;padding:14px 16px}
  .spec-row.head{display:none}
  .spec-row span::before{color:var(--dim);font-size:.76rem;display:block}
  .cta-band{padding:32px 22px}
  .footer-grid{grid-template-columns:1fr}
  .btn-ghost{display:none}
  .brand-text strong{max-width:150px;font-size:.8rem}
  .brand-text small{font-size:.64rem}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .nav-wrap{gap:10px;min-height:66px}
  .nav-actions .btn-solid{padding:9px 14px;font-size:.82rem}
  .hero-cta{flex-direction:column;align-items:stretch}
  .btn-primary-lg,.btn-outline-lg{justify-content:center}
  .fab{left:12px;bottom:84px;width:52px;height:52px}
}

/* roulang page: category2 */
:root{
      --bg-0:#030712;
      --bg-1:#081229;
      --bg-2:#0b1a34;
      --panel:rgba(11,23,45,.72);
      --panel-soft:rgba(15,32,60,.55);
      --line:rgba(56,189,248,.18);
      --line-strong:rgba(96,165,250,.42);
      --blue:#2563eb;
      --blue-deep:#1d4ed8;
      --cyan:#38bdf8;
      --holo:#60a5fa;
      --text:#f8fafc;
      --muted:#94a3b8;
      --dim:#64748b;
      --gold:#fbbf24;
      --success:#22c55e;
      --danger:#ef4444;
      --radius-xs:10px;
      --radius-sm:14px;
      --radius:18px;
      --radius-lg:26px;
      --shadow:0 18px 50px rgba(2,6,23,.55);
      --glow:0 0 24px rgba(37,99,235,.45);
      --glow-cyan:0 0 22px rgba(56,189,248,.38);
      --font:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
    body{
      margin:0;
      font-family:var(--font);
      font-size:16px;
      line-height:1.65;
      color:var(--text);
      background:
        radial-gradient(1100px 520px at 12% -6%, rgba(37,99,235,.22), transparent 62%),
        radial-gradient(900px 480px at 92% 4%, rgba(56,189,248,.14), transparent 60%),
        var(--bg-0);
      overflow-x:hidden;
      -webkit-font-smoothing:antialiased;
    }
    img{max-width:100%;height:auto;display:block}
    a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease}
    a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
    button{font-family:inherit;cursor:pointer;border:0;background:none}
    h1,h2,h3,h4,p{margin-top:0}
    h2{font-size:clamp(1.55rem,3vw,2.35rem);line-height:1.25;font-weight:800;letter-spacing:-.02em}
    h3{font-size:1.12rem;line-height:1.35;font-weight:700}
    p{color:var(--muted)}
    .container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

    .site-header{
      position:sticky;top:0;z-index:60;
      background:rgba(3,7,18,.84);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(56,189,248,.14);
      box-shadow:0 12px 35px rgba(2,6,23,.38);
    }
    .nav-wrap{display:flex;align-items:center;gap:16px;min-height:74px}
    .brand{display:flex;align-items:center;gap:11px;flex-shrink:0;min-width:0}
    .brand-mark{
      width:42px;height:42px;flex:0 0 42px;border-radius:13px;
      display:grid;place-items:center;font-size:1.05rem;color:#e0f2fe;
      background:linear-gradient(140deg,rgba(37,99,235,.85),rgba(56,189,248,.6));
      box-shadow:var(--glow);
      border:1px solid rgba(147,197,253,.35);
    }
    .brand-text{display:flex;flex-direction:column;min-width:0}
    .brand-text strong{
      font-size:.94rem;font-weight:700;letter-spacing:-.01em;color:#f1f5f9;
      white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:275px;
    }
    .brand-text small{font-size:.7rem;color:var(--cyan);letter-spacing:.05em;text-transform:uppercase}
    .main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
    .nav-link{
      padding:9px 14px;border-radius:999px;font-size:.9rem;font-weight:500;color:var(--muted);
      border:1px solid transparent;white-space:nowrap;
    }
    .nav-link:hover{color:#e0f2fe;background:rgba(56,189,248,.08);border-color:rgba(56,189,248,.2)}
    .nav-link.active{
      color:#e0f2fe;background:rgba(37,99,235,.24);
      border-color:var(--line-strong);box-shadow:inset 0 0 18px rgba(56,189,248,.16);
    }
    .nav-actions{display:flex;align-items:center;gap:9px;flex-shrink:0}
    .btn-ghost,.btn-solid,.btn-primary-lg,.btn-secondary-lg{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      border-radius:999px;font-weight:700;transition:transform .22s ease,box-shadow .22s ease,color .22s ease,border-color .22s ease;
    }
    .btn-ghost{
      padding:9px 16px;font-size:.88rem;color:#bfdbfe;
      border:1px solid rgba(96,165,250,.45);background:rgba(8,18,41,.5);
    }
    .btn-ghost:hover{color:#fff;border-color:var(--cyan);box-shadow:0 0 16px rgba(56,189,248,.28)}
    .btn-solid{
      padding:10px 19px;font-size:.88rem;color:#02101f;
      background:linear-gradient(135deg,#38bdf8,#2563eb 70%);
      box-shadow:0 0 20px rgba(56,189,248,.45);
    }
    .btn-solid:hover{transform:translateY(-1px);box-shadow:0 0 26px rgba(56,189,248,.62);color:#02101f}
    .nav-toggle{
      display:none;width:42px;height:42px;border-radius:12px;align-items:center;justify-content:center;
      color:#bfdbfe;border:1px solid rgba(96,165,250,.35);background:rgba(8,18,41,.6);font-size:1.05rem;
    }

    .hero{
      position:relative;overflow:hidden;padding:72px 0 62px;
      border-bottom:1px solid rgba(56,189,248,.12);
    }
    .hero-bg{
      position:absolute;inset:0;
      background-image:url('/assets/images/786817ad1cd5a7af.jpg');
      background-size:cover;background-position:center;
      opacity:.35;
    }
    .hero::after{
      content:"";position:absolute;inset:0;
      background:
        linear-gradient(180deg,rgba(3,7,18,.72) 0%,rgba(3,7,18,.89) 64%,var(--bg-0) 100%),
        linear-gradient(90deg,rgba(3,7,18,.38),rgba(3,7,18,.08));
      pointer-events:none;
    }
    .hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(310px,.65fr);gap:42px;align-items:center}
    .hero-copy{text-align:left;max-width:760px}
    .pill{
      display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:999px;
      font-size:.76rem;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:#a5f3fc;
      background:rgba(8,47,73,.55);border:1px solid rgba(56,189,248,.4);box-shadow:var(--glow-cyan);
    }
    .hero h1{
      margin:22px 0 0;font-size:clamp(1.85rem,4.4vw,3.25rem);
      line-height:1.17;font-weight:800;color:#f8fafc;
      text-shadow:0 6px 30px rgba(2,6,23,.8);
    }
    .hero h1 span{
      background:linear-gradient(100deg,#38bdf8,#a5f3fc 45%,#60a5fa);
      -webkit-background-clip:text;background-clip:text;color:transparent;
    }
    .hero-lead{margin:20px 0 0;max-width:730px;font-size:1.02rem;line-height:1.75;color:#cbd5e1}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:26px 0 0}
    .hero-point{
      padding:14px 14px 13px;border-left:2px solid var(--cyan);
      background:linear-gradient(90deg,rgba(37,99,235,.17),rgba(37,99,235,.02));
      border-radius:0 var(--radius-xs) var(--radius-xs) 0;
    }
    .hero-point strong{display:block;color:#e0f2fe;font-size:.93rem}
    .hero-point span{display:block;margin-top:3px;color:var(--muted);font-size:.8rem;line-height:1.45}
    .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
    .btn-primary-lg{
      padding:14px 27px;font-size:.96rem;color:#02101f;
      background:linear-gradient(135deg,#a5f3fc,#38bdf8 42%,#2563eb);
      box-shadow:0 0 28px rgba(56,189,248,.5);
    }
    .btn-primary-lg:hover{transform:translateY(-2px);box-shadow:0 0 38px rgba(56,189,248,.68);color:#02101f}
    .btn-secondary-lg{
      padding:13px 24px;font-size:.94rem;color:#dbeafe;
      border:1px solid rgba(96,165,250,.45);background:rgba(8,18,41,.68);
    }
    .btn-secondary-lg:hover{transform:translateY(-2px);color:#fff;border-color:var(--cyan);box-shadow:0 0 20px rgba(56,189,248,.24)}
    .hero-note{display:flex;align-items:center;gap:8px;margin-top:18px;color:#7dd3fc;font-size:.84rem}

    .release-console{
      position:relative;overflow:hidden;padding:24px;border-radius:var(--radius-lg);
      background:
        linear-gradient(145deg,rgba(15,32,60,.88),rgba(4,10,24,.94)),
        var(--panel);
      border:1px solid var(--line-strong);
      box-shadow:var(--shadow),inset 0 0 45px rgba(37,99,235,.12);
      backdrop-filter:blur(16px);
    }
    .release-console::before{
      content:"";position:absolute;inset:0;
      background-image:
        linear-gradient(rgba(56,189,248,.055) 1px,transparent 1px),
        linear-gradient(90deg,rgba(56,189,248,.055) 1px,transparent 1px);
      background-size:28px 28px;mask-image:linear-gradient(to bottom,black,transparent 82%);
      pointer-events:none;
    }
    .console-label{position:relative;display:flex;justify-content:space-between;gap:12px;align-items:center;color:#bae6fd;font-size:.77rem;text-transform:uppercase;letter-spacing:.08em}
    .live-dot{display:inline-flex;align-items:center;gap:7px;color:#86efac;font-weight:700}
    .live-dot i{font-size:.48rem;animation:pulseDot 1.5s infinite}
    @keyframes pulseDot{50%{opacity:.32;transform:scale(.82)}}
    .countdown-ring{
      position:relative;width:190px;height:190px;margin:24px auto 18px;border-radius:50%;
      display:grid;place-items:center;
      background:
        radial-gradient(circle at center,rgba(3,7,18,.96) 0 58%,transparent 59%),
        conic-gradient(#38bdf8 0deg,#2563eb 245deg,rgba(37,99,235,.15) 245deg 360deg);
      box-shadow:0 0 34px rgba(56,189,248,.28),inset 0 0 28px rgba(37,99,235,.3);
    }
    .countdown-ring::after{
      content:"";position:absolute;inset:13px;border-radius:50%;
      border:1px solid rgba(96,165,250,.35);
    }
    .ring-inner{position:relative;z-index:2;text-align:center}
    .ring-inner small{display:block;color:var(--muted);font-size:.72rem;text-transform:uppercase;letter-spacing:.09em}
    .ring-inner strong{display:block;color:#fff;font-size:1.55rem;line-height:1.2;margin-top:2px}
    .ring-inner span{display:block;margin-top:4px;color:var(--cyan);font-size:.73rem}
    .console-divider{position:relative;height:1px;margin:15px 0;background:linear-gradient(90deg,transparent,var(--line-strong),transparent)}
    .console-list{position:relative;display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .console-list li{display:flex;align-items:flex-start;gap:10px;color:#cbd5e1;font-size:.88rem}
    .console-list i{color:var(--cyan);margin-top:4px}
    .console-cta{position:relative;width:100%;margin-top:19px}

    .section{padding:76px 0}
    .section-alt{
      background:
        linear-gradient(180deg,rgba(8,18,41,.48),rgba(3,7,18,.72)),
        radial-gradient(850px 350px at 85% 15%,rgba(56,189,248,.12),transparent 68%);
      border-top:1px solid rgba(56,189,248,.11);
      border-bottom:1px solid rgba(56,189,248,.11);
    }
    .kicker{
      display:inline-flex;align-items:center;gap:8px;color:#7dd3fc;font-size:.76rem;
      font-weight:700;letter-spacing:.1em;text-transform:uppercase;
    }
    .section-head{display:grid;grid-template-columns:minmax(0,.85fr) minmax(280px,.5fr);gap:34px;align-items:end;margin-bottom:34px}
    .section-head p{margin:0;line-height:1.72}
    .section-head h2{margin:10px 0 0}
    .feature-grid{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:16px}
    .feature-panel{
      min-height:210px;padding:26px;border-radius:var(--radius);
      background:linear-gradient(150deg,rgba(11,23,45,.82),rgba(7,14,30,.66));
      border:1px solid var(--line);box-shadow:var(--shadow);
      transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
    }
    .feature-panel:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow),var(--glow)}
    .feature-panel.wide{grid-row:span 2;min-height:100%;display:flex;flex-direction:column;justify-content:space-between}
    .icon-box{
      width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
      color:#bae6fd;background:rgba(37,99,235,.2);border:1px solid rgba(96,165,250,.35);
      box-shadow:inset 0 0 18px rgba(56,189,248,.1);
    }
    .feature-panel h3{margin:19px 0 9px;color:#f1f5f9}
    .feature-panel p{margin:0;font-size:.91rem;line-height:1.68}
    .metric-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:24px}
    .metric-box{padding:14px;border-radius:12px;background:rgba(3,7,18,.58);border:1px solid var(--line)}
    .metric-box strong{display:block;color:#fff;font-size:1.15rem}
    .metric-box span{display:block;color:var(--dim);font-size:.74rem;line-height:1.4}

    .offer-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;align-items:stretch}
    .offer-card{
      position:relative;display:flex;flex-direction:column;min-height:410px;padding:27px;border-radius:var(--radius-lg);
      background:linear-gradient(160deg,rgba(11,23,45,.9),rgba(6,13,28,.82));
      border:1px solid var(--line);box-shadow:var(--shadow);
      transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
    }
    .offer-card:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:var(--shadow),var(--glow-cyan)}
    .offer-card.featured{
      border-color:rgba(56,189,248,.55);
      background:
        linear-gradient(160deg,rgba(18,48,88,.92),rgba(7,17,35,.9)),
        var(--panel);
      box-shadow:var(--shadow),0 0 30px rgba(56,189,248,.18);
    }
    .offer-tag{
      position:absolute;top:17px;right:17px;padding:5px 10px;border-radius:999px;
      font-size:.68rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:#052e16;
      background:linear-gradient(135deg,#a7f3d0,#22c55e);
    }
    .offer-card h3{margin:17px 0 8px;font-size:1.28rem;color:#fff}
    .price{display:flex;align-items:flex-end;gap:7px;margin:0 0 17px}
    .price strong{font-size:2.15rem;line-height:1;color:#7dd3fc;letter-spacing:-.03em}
    .price span{padding-bottom:3px;color:var(--muted);font-size:.8rem}
    .offer-card ul{display:grid;gap:11px;margin:0;padding:0;list-style:none}
    .offer-card li{display:flex;gap:10px;color:#cbd5e1;font-size:.87rem;line-height:1.55}
    .offer-card li i{color:var(--cyan);margin-top:4px}
    .offer-card .offer-action{margin-top:auto;padding-top:24px}
    .offer-card .btn-secondary-lg,.offer-card .btn-primary-lg{width:100%}
    .offer-footnote{margin:18px 0 0;color:var(--dim);font-size:.78rem}

    .scenario-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:36px;align-items:center}
    .scenario-visual{position:relative;min-height:440px;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow)}
    .scenario-visual img{width:100%;height:100%;min-height:440px;object-fit:cover}
    .scenario-visual::after{
      content:"";position:absolute;inset:0;
      background:linear-gradient(180deg,rgba(3,7,18,.06),rgba(3,7,18,.76));
    }
    .visual-label{
      position:absolute;z-index:2;left:20px;right:20px;bottom:20px;
      padding:16px 18px;border-radius:14px;background:rgba(3,7,18,.78);
      border:1px solid rgba(96,165,250,.34);backdrop-filter:blur(12px);
    }
    .visual-label strong{display:block;color:#fff}
    .visual-label span{display:block;margin-top:4px;color:#bae6fd;font-size:.82rem}
    .scenario-list{display:grid;gap:17px}
    .scenario-item{display:grid;grid-template-columns:54px 1fr;gap:17px;padding-bottom:17px;border-bottom:1px solid var(--line)}
    .scenario-item:last-child{border-bottom:0;padding-bottom:0}
    .scenario-number{
      width:54px;height:54px;border-radius:16px;display:grid;place-items:center;
      color:#dbeafe;font-weight:800;background:rgba(37,99,235,.18);border:1px solid rgba(96,165,250,.35);
    }
    .scenario-item h3{margin:2px 0 5px;color:#eff6ff}
    .scenario-item p{margin:0;font-size:.9rem}

    .performance-shell{
      position:relative;overflow:hidden;padding:42px;border-radius:var(--radius-lg);
      background:
        linear-gradient(100deg,rgba(3,7,18,.92),rgba(7,25,50,.78)),
        url('/assets/images/bca62b5f642c5c55.jpg') center/cover;
      border:1px solid var(--line-strong);box-shadow:var(--shadow);
    }
    .performance-shell::after{
      content:"";position:absolute;inset:0;
      background-image:
        linear-gradient(rgba(56,189,248,.06) 1px,transparent 1px),
        linear-gradient(90deg,rgba(56,189,248,.06) 1px,transparent 1px);
      background-size:32px 32px;pointer-events:none;
    }
    .performance-content{position:relative;z-index:2;display:grid;grid-template-columns:1fr .9fr;gap:40px;align-items:center}
    .performance-copy h2{margin:10px 0 15px}
    .performance-copy p{line-height:1.72}
    .performance-bars{display:grid;gap:17px;margin-top:25px}
    .bar-item{display:grid;grid-template-columns:112px 1fr 42px;gap:12px;align-items:center}
    .bar-item span{color:#cbd5e1;font-size:.82rem}
    .bar-track{height:8px;overflow:hidden;border-radius:999px;background:rgba(148,163,184,.14);border:1px solid rgba(148,163,184,.12)}
    .bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#2563eb,#38bdf8);box-shadow:0 0 12px rgba(56,189,248,.5)}
    .bar-item strong{color:#7dd3fc;font-size:.83rem;text-align:right}
    .device-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .device-panel{padding:20px;border-radius:var(--radius);background:rgba(4,10,24,.75);border:1px solid var(--line);backdrop-filter:blur(13px)}
    .device-panel i{color:var(--cyan);font-size:1.3rem}
    .device-panel h3{margin:14px 0 7px;color:#fff}
    .device-panel p{margin:0;font-size:.84rem;line-height:1.6}
    .device-panel .device-stat{margin-top:15px;color:#a7f3d0;font-size:.78rem;font-weight:700}

    .trust-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:17px}
    .trust-panel{padding:25px;border-radius:var(--radius);border:1px solid var(--line);background:linear-gradient(150deg,rgba(11,23,45,.7),rgba(6,13,28,.58))}
    .trust-panel i{width:43px;height:43px;border-radius:13px;display:grid;place-items:center;color:#7dd3fc;background:rgba(37,99,235,.17);border:1px solid rgba(96,165,250,.3)}
    .trust-panel h3{margin:17px 0 8px;color:#fff}
    .trust-panel p{margin:0;font-size:.88rem}
    .security-note{
      display:flex;align-items:center;justify-content:space-between;gap:24px;margin-top:22px;padding:20px 23px;
      border-radius:var(--radius);border:1px solid rgba(34,197,94,.26);background:rgba(20,83,45,.15);
    }
    .security-note p{margin:0;color:#bbf7d0;font-size:.88rem}
    .security-note strong{color:#fff;white-space:nowrap}

    .category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}
    .category-link{
      display:flex;flex-direction:column;min-height:210px;padding:24px;border-radius:var(--radius);
      border:1px solid var(--line);background:linear-gradient(150deg,rgba(8,18,41,.88),rgba(11,23,45,.55));
      transition:transform .25s ease,border-color .25s ease,background .25s ease;
    }
    .category-link:hover{transform:translateY(-4px);border-color:var(--cyan);background:rgba(12,32,62,.78)}
    .category-icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;color:#bae6fd;background:rgba(37,99,235,.2);border:1px solid rgba(96,165,250,.34)}
    .category-link h3{margin:18px 0 8px;color:#fff}
    .category-link p{margin:0;font-size:.88rem}
    .category-link span{margin-top:auto;padding-top:19px;color:#7dd3fc;font-weight:700;font-size:.84rem}

    .accordion{display:grid;gap:12px}
    .accordion-item{
      border:1px solid var(--line)!important;border-radius:var(--radius)!important;overflow:hidden;
      background:rgba(8,18,41,.66);box-shadow:none;
    }
    .accordion-button{
      background:rgba(8,18,41,.82);color:#e0f2fe;font-weight:700;font-size:.96rem;
      box-shadow:none!important;padding:19px 22px;
    }
    .accordion-button:not(.collapsed){color:#7dd3fc;background:rgba(37,99,235,.17)}
    .accordion-button::after{filter:invert(84%) sepia(61%) saturate(492%) hue-rotate(163deg) brightness(102%) contrast(98%)}
    .accordion-body{padding:0 22px 21px;color:var(--muted);line-height:1.72;font-size:.91rem}

    .cta-section{padding-top:42px}
    .cta-shell{
      position:relative;overflow:hidden;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(300px,.7fr);
      gap:38px;padding:42px;border-radius:var(--radius-lg);
      background:
        linear-gradient(110deg,rgba(5,12,27,.96),rgba(16,49,88,.82)),
        url('/assets/images/c4e46f7420bb23f4.png') center/cover;
      border:1px solid var(--line-strong);box-shadow:var(--shadow),inset 0 0 55px rgba(37,99,235,.12);
    }
    .cta-shell::after{
      content:"";position:absolute;right:-130px;bottom:-170px;width:410px;height:410px;border-radius:50%;
      border:1px solid rgba(56,189,248,.16);box-shadow:0 0 80px rgba(37,99,235,.16);pointer-events:none;
    }
    .cta-copy{position:relative;z-index:2}
    .cta-copy h2{margin:10px 0 16px}
    .cta-copy p{max-width:650px;line-height:1.72}
    .cta-benefits{display:flex;flex-wrap:wrap;gap:10px;margin-top:23px}
    .benefit-chip{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;color:#dbeafe;background:rgba(37,99,235,.17);border:1px solid rgba(96,165,250,.32);font-size:.8rem}
    .benefit-chip i{color:var(--cyan)}
    .code-form{position:relative;z-index:2;padding:24px;border-radius:var(--radius);background:rgba(3,7,18,.78);border:1px solid rgba(96,165,250,.34);backdrop-filter:blur(14px)}
    .code-form h3{margin:0 0 7px;color:#fff}
    .code-form > p{margin:0 0 18px;font-size:.84rem}
    .form-label{display:block;margin:0 0 7px;color:#cbd5e1;font-size:.81rem;font-weight:600}
    .form-control,.form-select{
      width:100%;padding:12px 13px;border-radius:12px;color:#e2e8f0;
      background:rgba(8,18,41,.8);border:1px solid rgba(96,165,250,.3);
    }
    .form-control::placeholder{color:#64748b}
    .form-control:focus,.form-select:focus{color:#fff;background:rgba(8,18,41,.96);border-color:var(--cyan);box-shadow:0 0 0 .2rem rgba(56,189,248,.11)}
    .form-select option{background:#081229;color:#e2e8f0}
    .code-form .btn-primary-lg{width:100%;margin-top:17px}
    .form-note{min-height:22px;margin:13px 0 0;color:#86efac;font-size:.81rem;text-align:center}

    .site-footer{margin-top:80px;background:linear-gradient(180deg,rgba(3,7,18,.45),#02050d);border-top:1px solid rgba(56,189,248,.15)}
    .footer-grid{display:grid;grid-template-columns:1.35fr .7fr .85fr .95fr;gap:34px;padding:58px 0 38px}
    .footer-brand p{margin:18px 0;max-width:420px;font-size:.86rem;line-height:1.68}
    .footer-col h4{margin:4px 0 16px;color:#e0f2fe;font-size:.92rem}
    .footer-col ul{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .footer-col a{color:var(--muted);font-size:.84rem}
    .footer-col a:hover{color:#7dd3fc}
    .pay-row{display:flex;flex-wrap:wrap;gap:8px}
    .pay-badge{padding:6px 9px;border-radius:8px;color:#bae6fd;background:rgba(37,99,235,.14);border:1px solid rgba(96,165,250,.24);font-size:.7rem;font-weight:600}
    .footer-trust{display:flex;flex-wrap:wrap;gap:10px;padding:22px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .trust-chip{display:inline-flex;align-items:center;gap:8px;color:#94a3b8;font-size:.78rem}
    .trust-chip i{color:var(--cyan)}
    .footer-bottom{display:flex;justify-content:space-between;gap:18px;padding:21px 0 27px;color:#64748b;font-size:.76rem}
    .footer-bottom p{margin:0;color:#64748b}
    .age-badge{display:inline-grid;place-items:center;min-width:36px;height:26px;padding:0 8px;border-radius:8px;color:#fbbf24;border:1px solid rgba(251,191,36,.48);font-weight:800;font-size:.72rem}

    .fab{
      position:fixed;left:16px;bottom:96px;z-index:80;width:56px;height:56px;border-radius:50%;
      display:grid;place-items:center;color:#07101f;
      background:linear-gradient(135deg,#a5f3fc,#38bdf8 45%,#2563eb);
      border:2px solid rgba(186,230,253,.85);
      box-shadow:0 0 22px rgba(56,189,248,.5),0 0 40px rgba(37,99,235,.28);
      transition:transform .24s ease,box-shadow .24s ease,filter .24s ease;
      opacity:.86;
    }
    .fab:hover{transform:scale(1.1);opacity:1;box-shadow:0 0 32px rgba(56,189,248,.78),0 0 56px rgba(37,99,235,.42)}
    .fab:active{transform:scale(.95) translateY(3px)}
    .fab i{animation:fabPulse 2.2s ease-in-out infinite}
    @keyframes fabPulse{50%{transform:scale(.9);filter:brightness(1.35)}}
    .fab-dot{position:absolute;top:1px;right:1px;width:13px;height:13px;border-radius:50%;background:#ef4444;border:2px solid #fff;animation:notifyPulse 1.35s infinite}
    @keyframes notifyPulse{50%{box-shadow:0 0 0 7px rgba(239,68,68,0)}0%{box-shadow:0 0 0 0 rgba(239,68,68,.42)}}

    @media (max-width:1100px){
      .main-nav{position:absolute;top:74px;left:16px;right:16px;display:none;flex-direction:column;align-items:stretch;padding:12px;border-radius:16px;background:rgba(3,7,18,.98);border:1px solid var(--line-strong);box-shadow:var(--shadow)}
      .main-nav.open{display:flex}
      .nav-link{padding:12px 14px}
      .nav-toggle{display:inline-flex}
      .brand-text strong{max-width:230px}
      .hero-grid{grid-template-columns:1fr;gap:34px}
      .release-console{max-width:620px}
      .feature-grid{grid-template-columns:1fr 1fr}
      .feature-panel.wide{grid-row:auto;min-height:220px}
      .offer-grid{grid-template-columns:1fr 1fr}
      .trust-grid{grid-template-columns:1fr 1fr}
      .footer-grid{grid-template-columns:1.2fr 1fr 1fr}
      .footer-brand{grid-column:1/-1}
    }

    @media (max-width:820px){
      .section{padding:62px 0}
      .section-head,.scenario-grid,.performance-content,.cta-shell{grid-template-columns:1fr}
      .scenario-visual,.scenario-visual img{min-height:350px}
      .performance-shell{padding:30px}
      .device-grid{grid-template-columns:1fr 1fr}
      .category-grid{grid-template-columns:1fr 1fr}
      .cta-shell{padding:31px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1/-1}
    }

    @media (max-width:620px){
      .container{padding:0 15px}
      .nav-wrap{min-height:68px;gap:8px}
      .brand-mark{width:38px;height:38px;flex-basis:38px;border-radius:11px}
      .brand-text strong{max-width:145px;font-size:.77rem}
      .brand-text small{font-size:.59rem;letter-spacing:.02em}
      .nav-actions{gap:5px}
      .btn-ghost,.btn-solid{padding:8px 10px;font-size:.72rem}
      .nav-toggle{width:38px;height:38px}
      .main-nav{top:68px;left:10px;right:10px}
      .hero{padding:52px 0 48px}
      .hero h1{font-size:2rem}
      .hero-points,.feature-grid,.offer-grid,.trust-grid,.category-grid,.device-grid{grid-template-columns:1fr}
      .hero-cta{flex-direction:column;align-items:stretch}
      .btn-primary-lg,.btn-secondary-lg{width:100%}
      .release-console{padding:20px}
      .countdown-ring{width:166px;height:166px}
      .section-head{gap:13px;margin-bottom:27px}
      .performance-shell{padding:23px}
      .bar-item{grid-template-columns:92px 1fr 38px}
      .security-note{align-items:flex-start;flex-direction:column;gap:10px}
      .security-note strong{white-space:normal}
      .cta-shell{padding:26px 20px}
      .code-form{padding:20px}
      .footer-grid{grid-template-columns:1fr;gap:28px;padding-top:45px}
      .footer-brand,.footer-col{grid-column:auto}
      .footer-bottom{flex-direction:column}
      .fab{left:12px;bottom:84px}
    }

    @media (max-width:390px){
      .brand-text strong{max-width:120px}
      .btn-ghost{display:none}
      .hero h1{font-size:1.72rem}
      .countdown-ring{width:148px;height:148px}
      .ring-inner strong{font-size:1.33rem}
    }

    @media (prefers-reduced-motion:reduce){
      *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}
    }

/* 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}