/* roulang page: index */
:root{
  --bg:#030712;
  --bg-soft:#050d20;
  --bg-panel:rgba(11,22,48,.62);
  --bg-panel-2:rgba(8,18,41,.78);
  --brand:#2563eb;
  --brand-2:#38bdf8;
  --accent:#22d3ee;
  --lime:#a3e635;
  --danger:#f43f5e;
  --text:#f8fafc;
  --text-soft:#cbd5e1;
  --muted:#93a3b8;
  --line:rgba(148,163,184,.16);
  --line-strong:rgba(56,189,248,.34);
  --glow:0 0 30px rgba(37,99,235,.45);
  --glow-soft:0 0 20px rgba(56,189,248,.22);
  --radius-xl:26px;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 26px 60px rgba(2,6,23,.72);
  --shell:1200px;
  --header-h:74px;
  --bs-body-font-family:'Be Vietnam Pro',system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  padding-top:var(--header-h);
  font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  background:
    radial-gradient(900px 540px at 10% -10%, rgba(37,99,235,.30), transparent 62%),
    radial-gradient(760px 460px at 92% 4%, rgba(34,211,238,.16), transparent 64%),
    radial-gradient(700px 520px at 50% 120%, rgba(56,189,248,.10), transparent 70%),
    linear-gradient(180deg,#030712 0%,#050b1c 46%,#030712 100%);
  pointer-events:none;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background-image:linear-gradient(rgba(56,189,248,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(56,189,248,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 22%,#000 0%,transparent 78%);
  pointer-events:none;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{font-weight:700;line-height:1.3;margin:0 0 14px;letter-spacing:-.01em}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px}

/* ===== Layout ===== */
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 22px}
.section{padding:86px 0;position:relative}
.section-alt{background:linear-gradient(180deg,rgba(8,18,41,.55),rgba(3,7,18,.1));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:44px}
.section-head.is-center{margin-left:auto;margin-right:auto;text-align:center}
.section-title{font-size:clamp(1.55rem,3.1vw,2.3rem);margin-bottom:14px}
.section-lead{color:var(--muted);font-size:1.02rem;margin:0}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:.72rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:#7dd3fc;background:rgba(56,189,248,.10);border:1px solid rgba(56,189,248,.28);padding:7px 15px;border-radius:999px;margin-bottom:18px}
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 28px;border-radius:999px;font-weight:600;font-size:.95rem;line-height:1.2;border:1px solid transparent;cursor:pointer;transition:transform .22s ease,box-shadow .3s ease,background .3s ease,border-color .3s ease,color .22s ease}
.btn i{font-size:.9em}
.btn-primary-glow{background:linear-gradient(135deg,#1d4ed8 0%,#2563eb 45%,#38bdf8 100%);color:#fff;box-shadow:0 0 28px rgba(56,189,248,.42)}
.btn-primary-glow:hover{transform:translateY(-3px);box-shadow:0 0 40px rgba(56,189,248,.68);color:#fff}
.btn-primary-glow:active{transform:translateY(0);box-shadow:0 0 18px rgba(56,189,248,.5)}
.btn-ghost{background:rgba(148,163,184,.08);border-color:rgba(148,163,184,.3);color:var(--text-soft);backdrop-filter:blur(10px)}
.btn-ghost:hover{background:rgba(56,189,248,.14);border-color:var(--line-strong);color:#fff;transform:translateY(-3px)}
.btn-sm{padding:11px 20px;font-size:.86rem}
.btn-block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ===== Header ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--header-h);display:flex;align-items:center;background:rgba(3,7,18,.78);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);transition:background .3s ease,box-shadow .3s ease}
.site-header.is-scrolled{background:rgba(3,7,18,.94);box-shadow:0 14px 40px rgba(2,6,23,.7)}
.nav-shell{display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,#1d4ed8,#22d3ee);color:#03121f;font-size:1rem;box-shadow:var(--glow-soft)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:.95rem;font-weight:700;letter-spacing:-.01em}
.brand-text small{font-size:.7rem;color:var(--brand-2);letter-spacing:.06em;text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{position:relative;padding:9px 14px;border-radius:999px;font-size:.9rem;font-weight:500;color:var(--muted);transition:color .22s ease,background .22s ease}
.nav-link:hover{color:#fff;background:rgba(56,189,248,.1)}
.nav-link.active{color:#fff;background:rgba(56,189,248,.14);box-shadow:inset 0 0 0 1px rgba(56,189,248,.3)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;background:rgba(148,163,184,.1);border:1px solid var(--line);color:var(--text-soft);font-size:1rem;cursor:pointer;transition:background .22s ease}
.nav-toggle:hover{background:rgba(56,189,248,.16);color:#fff}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;padding:0}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(3,7,18,.96) 0%,rgba(3,9,26,.88) 42%,rgba(4,10,28,.62) 72%,rgba(3,7,18,.92) 100%)}
.hero-inner{position:relative;z-index:2;padding:96px 0 84px}
.hero-content{max-width:820px}
.hero-badge{display:inline-flex;align-items:center;gap:10px;padding:8px 16px;border-radius:999px;background:rgba(56,189,248,.12);border:1px solid rgba(56,189,248,.34);color:#a5f3fc;font-size:.76rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;margin-bottom:24px}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 12px var(--lime);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.82)}}
.hero h1{font-size:clamp(1.85rem,4.4vw,3.15rem);font-weight:800;line-height:1.22;margin-bottom:22px;text-shadow:0 8px 40px rgba(2,6,23,.85)}
.hero h1 .hl{background:linear-gradient(120deg,#38bdf8,#a3e635);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:1.05rem;color:#d5e2f2;max-width:720px;margin-bottom:30px}
.hero-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:52px;padding-top:30px;border-top:1px solid rgba(148,163,184,.22);max-width:840px}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats strong{font-size:1.5rem;font-weight:800;background:linear-gradient(120deg,#38bdf8,#22d3ee);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats span{font-size:.8rem;color:var(--muted);margin-top:2px}
.play-wrap{position:absolute;right:26px;bottom:44px;z-index:3;display:flex;align-items:center;gap:14px}
.play-btn{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:rgba(11,22,48,.72);border:1px solid var(--line-strong);color:#fff;font-size:1.15rem;backdrop-filter:blur(12px);box-shadow:0 0 30px rgba(56,189,248,.4);transition:transform .25s ease,box-shadow .3s ease}
.play-btn::before{content:"";position:absolute;width:64px;height:64px;border-radius:50%;border:1px solid rgba(56,189,248,.55);animation:ring 2.4s infinite}
@keyframes ring{0%{transform:scale(1);opacity:.85}100%{transform:scale(1.7);opacity:0}}
.play-btn:hover{transform:scale(1.08);box-shadow:0 0 46px rgba(56,189,248,.72)}
.play-label{font-size:.82rem;color:var(--text-soft);max-width:130px;line-height:1.35}

/* ===== Cards ===== */
.card-glass{background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;backdrop-filter:blur(14px);transition:transform .28s ease,border-color .28s ease,box-shadow .3s ease}
.card-glass:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:0 20px 44px rgba(2,6,23,.6),var(--glow-soft)}
.card-icon{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(37,99,235,.32),rgba(34,211,238,.2));border:1px solid rgba(56,189,248,.3);color:#7dd3fc;font-size:1.05rem;margin-bottom:16px}
.card-glass h3{font-size:1.06rem;margin-bottom:10px}
.card-glass p{color:var(--muted);font-size:.93rem}

/* ===== Pain list ===== */
.pain-list{display:flex;flex-direction:column;gap:16px}
.pain-list li{display:flex;gap:16px;padding:20px 22px;border-radius:var(--radius-lg);background:var(--bg-panel-2);border:1px solid var(--line);border-left:3px solid var(--danger);transition:border-color .25s ease,transform .25s ease}
.pain-list li:hover{transform:translateX(4px);border-left-color:var(--brand-2)}
.pain-list .num{font-size:1.05rem;font-weight:800;color:#fb7185;letter-spacing:.04em;flex-shrink:0}
.pain-list h3{font-size:.98rem;margin-bottom:6px}
.pain-list p{color:var(--muted);font-size:.9rem;margin:0}

/* ===== Demo ===== */
.demo-layout{display:grid;grid-template-columns:.92fr 1.08fr;gap:48px;align-items:center}
.demo-visual{margin:0}
.demo-visual img{border-radius:var(--radius-xl);border:1px solid var(--line-strong);box-shadow:var(--shadow)}
.demo-visual figcaption{margin-top:14px;font-size:.82rem;color:var(--muted)}
.steps{display:flex;flex-direction:column;gap:14px}
.step{display:flex;gap:18px;padding:22px;border-radius:var(--radius-lg);background:rgba(8,18,41,.6);border:1px solid var(--line);transition:background .25s ease,border-color .25s ease}
.step:hover{background:rgba(13,27,58,.72);border-color:var(--line-strong)}
.step-no{width:38px;height:38px;flex-shrink:0;border-radius:11px;display:grid;place-items:center;font-weight:800;font-size:.95rem;color:#03121f;background:linear-gradient(135deg,#38bdf8,#a3e635)}
.step h3{font-size:1rem;margin-bottom:6px}
.step p{color:var(--muted);font-size:.9rem;margin:0}

/* ===== Chart ===== */
.chart{display:flex;flex-direction:column;gap:14px;padding:28px;border-radius:var(--radius-xl);background:var(--bg-panel-2);border:1px solid var(--line);backdrop-filter:blur(12px)}
.chart-row{display:grid;grid-template-columns:88px 1fr 76px;align-items:center;gap:14px}
.chart-label{font-size:.84rem;color:var(--muted);font-weight:500}
.chart-track{height:14px;border-radius:999px;background:rgba(148,163,184,.12);overflow:hidden}
.chart-bar{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#2563eb,#38bdf8);box-shadow:0 0 16px rgba(56,189,248,.5)}
.chart-bar.down{background:linear-gradient(90deg,#9f1239,#f43f5e);box-shadow:0 0 16px rgba(244,63,94,.4)}
.chart-value{font-size:.86rem;font-weight:700;text-align:right}
.chart-value.up{color:#7dd3fc}
.chart-value.down{color:#fb7185}

/* ===== Timeline ===== */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.timeline::before{content:"";position:absolute;top:22px;left:6%;right:6%;height:1px;background:linear-gradient(90deg,transparent,rgba(56,189,248,.5),transparent)}
.tl-item{position:relative;padding-top:56px}
.tl-dot{position:absolute;top:8px;left:0;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#071127;border:1px solid var(--line-strong);color:#7dd3fc;font-size:.78rem;font-weight:700;box-shadow:0 0 18px rgba(56,189,248,.35)}
.tl-item h3{font-size:1rem;margin-bottom:8px}
.tl-item p{color:var(--muted);font-size:.9rem}

/* ===== Spec list ===== */
.spec-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 34px}
.spec-list li{display:flex;justify-content:space-between;gap:16px;padding:15px 0;border-bottom:1px dashed rgba(148,163,184,.2)}
.spec-list dt,.spec-list .k{color:var(--muted);font-size:.9rem}
.spec-list .v{font-weight:600;font-size:.92rem;color:#e2e8f0;text-align:right}

/* ===== Method ===== */
.method{display:grid;gap:24px}
.method h3{font-size:1.05rem;color:#bae6fd;margin-bottom:10px;display:flex;gap:12px;align-items:flex-start}
.method h3 i{color:var(--brand-2);margin-top:5px;font-size:.85rem}
.method .card-glass p{color:var(--muted)}
.method .card-glass strong{color:#e2e8f0}

/* ===== Tags ===== */
.tag-cloud{display:flex;flex-wrap:wrap;gap:12px}
.tag{padding:10px 18px;border-radius:999px;background:rgba(148,163,184,.08);border:1px solid var(--line);font-size:.88rem;color:var(--text-soft);transition:all .25s ease}
.tag:hover{background:rgba(56,189,248,.14);border-color:var(--line-strong);color:#fff;transform:translateY(-2px)}

/* ===== Category entry ===== */
.cat-card{display:flex;flex-direction:column;gap:14px;padding:28px;border-radius:var(--radius-xl);background:linear-gradient(165deg,rgba(13,27,58,.78),rgba(5,13,32,.72));border:1px solid var(--line);transition:transform .28s ease,border-color .28s ease,box-shadow .3s ease}
.cat-card:hover{transform:translateY(-6px);border-color:var(--line-strong);box-shadow:0 22px 50px rgba(2,6,23,.65),var(--glow-soft)}
.cat-card h3{font-size:1.14rem;margin:0}
.cat-card p{color:var(--muted);font-size:.92rem;flex-grow:1}
.cat-more{font-size:.86rem;font-weight:600;color:var(--brand-2);display:inline-flex;align-items:center;gap:8px}
.cat-card:hover .cat-more{gap:12px}

/* ===== Data strip ===== */
.data-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-xl);overflow:hidden}
.data-strip li{background:rgba(6,14,33,.92);padding:30px 24px;text-align:center}
.data-strip strong{display:block;font-size:1.85rem;font-weight:800;background:linear-gradient(120deg,#38bdf8,#a3e635);-webkit-background-clip:text;background-clip:text;color:transparent}
.data-strip span{font-size:.84rem;color:var(--muted)}

/* ===== Trust ===== */
.trust-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.trust-item{display:flex;align-items:center;gap:14px;padding:20px 22px;border-radius:var(--radius-lg);background:rgba(8,18,41,.55);border:1px solid var(--line);transition:border-color .25s ease,background .25s ease}
.trust-item:hover{border-color:var(--line-strong);background:rgba(13,27,58,.7)}
.trust-item i{font-size:1.3rem;color:#7dd3fc}
.trust-item strong{display:block;font-size:.92rem}
.trust-item span{font-size:.78rem;color:var(--muted)}

/* ===== Reviews ===== */
.review{padding:28px;border-radius:var(--radius-xl);background:rgba(8,18,41,.62);border:1px solid var(--line);display:flex;flex-direction:column;gap:16px;transition:transform .28s ease,border-color .28s ease}
.review:hover{transform:translateY(-5px);border-color:var(--line-strong)}
.review-stars{color:#fbbf24;font-size:.82rem;letter-spacing:2px}
.review p{color:var(--text-soft);font-size:.94rem}
.review-meta{display:flex;align-items:center;gap:12px;margin-top:auto}
.avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:.85rem;color:#03121f;background:linear-gradient(135deg,#38bdf8,#a3e635)}
.review-meta strong{display:block;font-size:.9rem}
.review-meta span{font-size:.78rem;color:var(--muted)}

/* ===== Mission ===== */
.mission{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.mission-card{padding:30px;border-radius:var(--radius-xl);background:var(--bg-panel-2);border:1px solid var(--line);backdrop-filter:blur(12px)}
.mission-list{display:flex;flex-direction:column;gap:20px}
.mission-item{display:flex;flex-direction:column;gap:9px}
.mission-top{display:flex;justify-content:space-between;font-size:.89rem;color:var(--text-soft)}
.progress{height:9px;border-radius:999px;background:rgba(148,163,184,.14);overflow:hidden}
.progress span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#2563eb,#38bdf8)}
.progress span.gold{background:linear-gradient(90deg,#a3e635,#22d3ee)}

/* ===== Posts ===== */
.post-list{display:flex;flex-direction:column;gap:18px}
.post-card{display:grid;grid-template-columns:180px 1fr;gap:22px;padding:18px;border-radius:var(--radius-lg);background:rgba(8,18,41,.6);border:1px solid var(--line);transition:transform .26s ease,border-color .26s ease,background .26s ease}
.post-card:hover{transform:translateX(5px);border-color:var(--line-strong);background:rgba(13,27,58,.78)}
.post-thumb{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.post-thumb img{width:100%;height:126px;object-fit:cover}
.post-body{display:flex;flex-direction:column;gap:9px}
.post-tags{display:flex;gap:10px;align-items:center;font-size:.74rem;color:var(--brand-2);text-transform:uppercase;letter-spacing:.08em;font-weight:600}
.post-body h3{font-size:1.02rem;margin:0;line-height:1.4}
.post-body p{color:var(--muted);font-size:.89rem;margin:0}
.post-date{font-size:.76rem;color:var(--muted)}
.side-card{padding:24px;border-radius:var(--radius-xl);background:rgba(8,18,41,.66);border:1px solid var(--line);backdrop-filter:blur(12px)}
.side-card h3{font-size:1rem;margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.side-list{display:flex;flex-direction:column;gap:14px}
.side-list li{padding-bottom:14px;border-bottom:1px dashed rgba(148,163,184,.18)}
.side-list li:last-child{padding-bottom:0;border-bottom:0}
.side-list a{font-size:.9rem;font-weight:600;line-height:1.45;display:block;transition:color .22s ease}
.side-list a:hover{color:var(--brand-2)}
.side-list span{font-size:.75rem;color:var(--muted);display:block;margin-top:5px}
.empty-state{padding:34px;border-radius:var(--radius-lg);border:1px dashed var(--line-strong);color:var(--muted);text-align:center;background:rgba(8,18,41,.5)}

/* ===== CTA ===== */
.cta-band{position:relative;overflow:hidden;border-radius:var(--radius-xl);padding:56px;background:linear-gradient(120deg,rgba(37,99,235,.28),rgba(34,211,238,.16));border:1px solid var(--line-strong);box-shadow:var(--shadow)}
.cta-band::after{content:"";position:absolute;width:420px;height:420px;right:-140px;top:-180px;border-radius:50%;background:radial-gradient(circle,rgba(56,189,248,.35),transparent 68%);pointer-events:none}
.cta-band h2{font-size:clamp(1.5rem,3vw,2.15rem);position:relative}
.cta-band p{color:#d7e5f5;max-width:640px;position:relative}
.cta-band .btn-row{position:relative;margin-top:26px}

/* ===== Footer ===== */
.site-footer{background:linear-gradient(180deg,rgba(3,7,18,.4),#020510);border-top:1px solid var(--line);padding:66px 0 30px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:44px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.footer-col h4{font-size:.86rem;text-transform:uppercase;letter-spacing:.14em;color:#7dd3fc;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col li{font-size:.89rem;color:var(--muted);transition:color .22s ease}
.footer-col a:hover{color:#fff}
.footer-about p{color:var(--muted);font-size:.89rem}
.footer-bottom{margin-top:46px;padding-top:24px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;font-size:.82rem;color:var(--muted)}
.badge-18{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;border:1px solid var(--line-strong);font-size:.72rem;font-weight:700;color:#7dd3fc}

/* ===== FAB ===== */
.fab{position:fixed;left:16px;bottom:96px;z-index:50;width:56px;height:56px;border-radius:18px;display:grid;place-items:center;color:#67e8f9;font-size:1.3rem;
  border:2px solid transparent;
  background-image:linear-gradient(rgba(5,11,26,.9),rgba(5,11,26,.9)),linear-gradient(135deg,#a3e635,#06b6d4);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 22px rgba(6,182,212,.45);
  backdrop-filter:blur(14px);
  animation:fabGlow 2.8s ease-in-out infinite;
  transition:transform .25s ease,box-shadow .3s ease,opacity .25s ease;opacity:.82}
@keyframes fabGlow{0%,100%{box-shadow:0 0 18px rgba(6,182,212,.36)}50%{box-shadow:0 0 30px rgba(163,230,53,.44)}}
.fab:hover{transform:scale(1.1);opacity:1;box-shadow:0 0 40px rgba(34,211,238,.7)}
.fab:active{transform:scale(.94)}
.fab-badge{position:absolute;top:6px;right:6px;width:9px;height:9px;border-radius:50%;background:#f43f5e;box-shadow:0 0 10px #f43f5e;animation:pulse 1.6s infinite}

/* ===== Responsive ===== */
@media (max-width:1080px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .timeline{grid-template-columns:repeat(2,minmax(0,1fr))}
  .timeline::before{display:none}
  .data-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .trust-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:1fr;gap:36px}
  .demo-layout{grid-template-columns:1fr;gap:34px}
  .mission{grid-template-columns:1fr;gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:880px){
  .main-nav{position:fixed;top:var(--header-h);left:0;right:0;flex-direction:column;align-items:stretch;gap:6px;margin:0;padding:18px 22px 24px;background:rgba(3,7,18,.98);border-bottom:1px solid var(--line);backdrop-filter:blur(18px);transform:translateY(-12px);opacity:0;visibility:hidden;transition:all .26s ease}
  .main-nav.is-open{transform:translateY(0);opacity:1;visibility:visible}
  .nav-toggle{display:grid;place-items:center}
  .nav-actions .btn{display:none}
  .hero-inner{padding:72px 0 96px}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .play-wrap{position:static;margin-top:34px}
  .play-btn::before{display:none}
  .grid-3{grid-template-columns:1fr}
  .section{padding:66px 0}
}
@media (max-width:640px){
  .hero h1{font-size:1.7rem}
  .hero-lead{font-size:.98rem}
  .cta-band{padding:34px 24px}
  .post-card{grid-template-columns:1fr}
  .post-thumb img{height:180px}
  .spec-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .chart-row{grid-template-columns:66px 1fr 64px;gap:10px}
  .data-strip{grid-template-columns:1fr}
  .trust-row{grid-template-columns:1fr}
  .btn{padding:13px 22px;font-size:.9rem}
  .brand-text strong{font-size:.85rem}
}
@media (max-width:420px){
  .shell{padding:0 16px}
  .grid-2{grid-template-columns:1fr}
}

.footer-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
  .f-badge{display:inline-flex;align-items:center;padding:5px 11px;border-radius:999px;border:1px solid rgba(125,211,252,.35);background:rgba(12,26,48,.7);color:#bfe6ff;font-size:.74rem;letter-spacing:.04em;text-transform:uppercase}
  .footer-col h4{font-size:.98rem;letter-spacing:.03em;color:#e8f4ff;margin-bottom:14px}
  .footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
  .footer-col ul li a,.footer-col ul li span{color:#93a7bd;font-size:.9rem;line-height:1.55;text-decoration:none;transition:color .2s ease,transform .2s ease;display:inline-block}
  .footer-col ul li a:hover{color:#7dd3fc;transform:translateX(3px)}
  .footer-note{margin-top:14px;font-size:.85rem;color:#93a7bd}
  .footer-note a{color:#7dd3fc;text-decoration:none}
  .footer-note a:hover{text-decoration:underline}
  .footer-bottom{border-top:1px solid rgba(125,211,252,.16);margin-top:34px;padding-top:22px;display:flex;flex-direction:column;gap:10px}
  .footer-bottom p{margin:0;font-size:.85rem;color:#7c8ea3;line-height:1.65}
  .footer-warn{color:#6b7c90}
  .fab-neon{position:fixed;left:1rem;bottom:6rem;z-index:50;display:inline-flex;align-items:center;gap:.65rem;padding:.7rem 1.15rem .7rem .7rem;border-radius:999px;border:1px solid transparent;background:linear-gradient(rgba(7,12,28,.88),rgba(7,12,28,.88)) padding-box,linear-gradient(120deg,#22d3ee,#3b82f6,#22d3ee) border-box;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 0 22px rgba(34,211,238,.35);color:#dff4ff;font-weight:700;font-size:.85rem;text-decoration:none;min-height:56px;opacity:.85;transition:transform .25s ease,box-shadow .25s ease,opacity .25s ease}
  .fab-neon:hover,.fab-neon:focus-visible{opacity:1;color:#fff;transform:translateY(-3px) scale(1.03);box-shadow:0 0 34px rgba(34,211,238,.6);outline:none}
  .fab-neon:active{transform:scale(.94) translateY(1px)}
  .fab-neon .fab-icon{display:grid;place-items:center;width:36px;height:36px;border-radius:999px;background:linear-gradient(140deg,#22d3ee,#3b82f6);color:#04121f;font-size:1rem;flex:0 0 auto}
  .fab-neon .fab-dot{position:absolute;top:5px;right:12px;width:9px;height:9px;border-radius:50%;background:#f43f5e;box-shadow:0 0 0 2px rgba(7,12,28,.9);animation:pulseDot 1.7s ease-in-out infinite}
  @keyframes pulseDot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(1.3)}}
  @media (max-width:768px){
    .footer-bottom{text-align:left}
  }
  @media (max-width:520px){
    .fab-neon .fab-text{display:none}
    .fab-neon{padding:.7rem;bottom:5.5rem}
    .f-badge{font-size:.68rem}
  }

/* roulang page: article */
:root{
  --bg:#030712;
  --bg-soft:#050d20;
  --bg-panel:rgba(11,22,48,.62);
  --bg-panel-2:rgba(8,18,41,.78);
  --brand:#2563eb;
  --brand-2:#38bdf8;
  --accent:#22d3ee;
  --lime:#a3e635;
  --danger:#f43f5e;
  --text:#f8fafc;
  --text-soft:#cbd5e1;
  --muted:#93a3b8;
  --line:rgba(148,163,184,.16);
  --line-strong:rgba(56,189,248,.34);
  --glow:0 0 30px rgba(37,99,235,.45);
  --glow-soft:0 0 20px rgba(56,189,248,.22);
  --radius-xl:26px;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 26px 60px rgba(2,6,23,.72);
  --shell:1200px;
  --header-h:74px;
  --bs-body-font-family:'Be Vietnam Pro',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-top:var(--header-h);
  font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  background:
    radial-gradient(900px 540px at 10% -10%, rgba(37,99,235,.30), transparent 62%),
    radial-gradient(760px 460px at 92% 4%, rgba(34,211,238,.16), transparent 64%),
    radial-gradient(700px 520px at 50% 120%, rgba(56,189,248,.10), transparent 70%),
    linear-gradient(180deg,#030712 0%,#050b1c 46%,#030712 100%);
  pointer-events:none;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background-image:linear-gradient(rgba(56,189,248,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(56,189,248,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 22%,#000 0%,transparent 78%);
  pointer-events:none;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0 0 .55em;font-weight:700;line-height:1.26;letter-spacing:-.01em;color:#fff}
p{margin:0 0 1.05em}
ul,ol{margin:0;padding:0;list-style:none}
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 20px}
.section{padding:84px 0;position:relative}
.section-alt{background:linear-gradient(180deg,rgba(8,18,41,.55),rgba(3,7,18,.1));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:42px}
.section-title{font-size:clamp(1.5rem,3vw,2.2rem);margin-bottom:12px}
.section-lead{color:var(--muted);font-size:1rem;margin:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.72rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.eyebrow::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--brand-2),transparent);border-radius:2px}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 28px;border-radius:999px;font-weight:600;font-size:.95rem;line-height:1.2;border:1px solid transparent;cursor:pointer;transition:transform .22s ease,box-shadow .3s ease,background .3s ease,border-color .3s ease,color .22s ease}
.btn i{font-size:.9em}
.btn-primary-glow{background:linear-gradient(135deg,#1d4ed8 0%,#2563eb 45%,#38bdf8 100%);color:#fff;box-shadow:0 0 28px rgba(56,189,248,.42)}
.btn-primary-glow:hover{transform:translateY(-3px);box-shadow:0 0 40px rgba(56,189,248,.68);color:#fff}
.btn-primary-glow:active{transform:translateY(0);box-shadow:0 0 18px rgba(56,189,248,.5)}
.btn-ghost{background:rgba(148,163,184,.08);border-color:rgba(148,163,184,.3);color:var(--text-soft);backdrop-filter:blur(10px)}
.btn-ghost:hover{background:rgba(56,189,248,.14);border-color:var(--line-strong);color:#fff;transform:translateY(-3px)}
.btn-sm{padding:11px 20px;font-size:.86rem}
.btn-block{width:100%}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* ===== Header ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--header-h);display:flex;align-items:center;background:rgba(3,7,18,.78);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);transition:background .3s ease,box-shadow .3s ease}
.site-header.is-scrolled{background:rgba(3,7,18,.94);box-shadow:0 14px 40px rgba(2,6,23,.7)}
.nav-shell{display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,#1d4ed8,#22d3ee);color:#03121f;font-size:1rem;box-shadow:var(--glow-soft)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:.95rem;font-weight:700;letter-spacing:-.01em}
.brand-text small{font-size:.7rem;color:var(--brand-2);letter-spacing:.06em;text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{position:relative;padding:9px 14px;border-radius:999px;font-size:.9rem;font-weight:500;color:var(--muted);transition:color .22s ease,background .22s ease}
.nav-link:hover{color:#fff;background:rgba(56,189,248,.1)}
.nav-link.active{color:#fff;background:rgba(56,189,248,.14);box-shadow:inset 0 0 0 1px rgba(56,189,248,.3)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;background:rgba(148,163,184,.1);border:1px solid var(--line);color:var(--text-soft);font-size:1rem;cursor:pointer;transition:background .22s ease,color .22s ease}
.nav-toggle:hover{background:rgba(56,189,248,.16);color:#fff}

/* ===== Article head ===== */
.article-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.article-hero .hero-media{position:absolute;inset:0;z-index:0}
.article-hero .hero-media img{width:100%;height:100%;object-fit:cover}
.article-hero .hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(3,7,18,.97) 0%,rgba(4,10,28,.9) 46%,rgba(4,12,32,.68) 74%,rgba(3,7,18,.94) 100%)}
.article-hero .hero-inner{position:relative;z-index:2;padding:74px 0 64px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.82rem;color:var(--muted);margin-bottom:22px}
.crumb a{color:var(--brand-2)}
.crumb a:hover{color:#fff;text-decoration:underline}
.crumb span.sep{opacity:.5}
.article-badge-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:20px}
.tag{display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:999px;font-size:.74rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;background:rgba(56,189,248,.12);border:1px solid rgba(56,189,248,.32);color:#a5f3fc}
.tag.is-lime{background:rgba(163,230,53,.12);border-color:rgba(163,230,53,.34);color:#d9f99d}
.tag.is-danger{background:rgba(244,63,94,.12);border-color:rgba(244,63,94,.34);color:#fecdd3}
.meta-line{display:flex;flex-wrap:wrap;gap:18px;font-size:.85rem;color:var(--muted)}
.meta-line i{color:var(--brand-2);margin-right:6px}
.article-hero h1{font-size:clamp(1.7rem,4vw,2.85rem);line-height:1.24;margin-bottom:18px;max-width:960px}
.lede{font-size:1.06rem;color:var(--text-soft);max-width:820px;margin-bottom:28px}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px}
.stat-pill{min-width:158px;padding:14px 18px;border-radius:var(--radius);background:var(--bg-panel);border:1px solid var(--line);backdrop-filter:blur(14px)}
.stat-pill strong{display:block;font-size:1.28rem;font-weight:800;color:#fff}
.stat-pill span{font-size:.78rem;color:var(--muted);letter-spacing:.03em}

/* ===== Panels & layout ===== */
.panel{background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-lg);backdrop-filter:blur(16px);box-shadow:var(--shadow)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:44px;align-items:start}
.article-body{font-size:1.02rem;color:var(--text-soft);max-width:100%}
.article-body h2{font-size:clamp(1.28rem,2.4vw,1.62rem);color:#fff;margin:40px 0 14px}
.article-body h3{font-size:1.16rem;color:#fff;margin:30px 0 12px}
.article-body h2:first-child,.article-body h3:first-child{margin-top:0}
.article-body p{color:var(--text-soft);line-height:1.7}
.article-body strong{color:#fff}
.article-body a{color:var(--brand-2);border-bottom:1px dashed rgba(56,189,248,.45)}
.article-body a:hover{color:#fff}
.article-body ul{margin:0 0 22px}
.article-body ul li{position:relative;padding-left:26px;margin-bottom:10px}
.article-body ul li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--brand-2),var(--accent))}
.article-body ol{list-style:decimal;padding-left:22px;margin:0 0 22px}
.article-body ol li{margin-bottom:10px}
.article-body blockquote{margin:26px 0;padding:20px 24px;border-left:3px solid var(--brand-2);border-radius:0 var(--radius) var(--radius) 0;background:rgba(37,99,235,.12);color:var(--text)}
.article-body img{border-radius:var(--radius);border:1px solid var(--line);margin:22px 0}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:.94rem;overflow:hidden;border-radius:var(--radius)}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.article-body th{background:rgba(56,189,248,.09);color:#fff;font-weight:600}
.empty-state{padding:34px 28px;border-radius:var(--radius-lg);background:var(--bg-panel-2);border:1px dashed var(--line-strong);text-align:left}
.empty-state h2{margin-bottom:10px}
.cover-frame{margin:8px 0 36px;border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow)}
.cover-frame img{width:100%;height:auto}

/* ===== Sidebar ===== */
.side-stack{display:grid;gap:20px}
.side-card{padding:24px 22px;border-radius:var(--radius-lg);background:var(--bg-panel-2);border:1px solid var(--line);backdrop-filter:blur(16px)}
.side-card h3{font-size:1rem;margin-bottom:14px;display:flex;align-items:center;gap:9px}
.side-card h3 i{color:var(--brand-2)}
.side-list li{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:.9rem;color:var(--text-soft)}
.side-list li:last-child{border-bottom:0}
.side-list b{color:#fff;font-weight:600;white-space:nowrap}
.mini-note{font-size:.82rem;color:var(--muted);margin:14px 0 0}

/* ===== Spec table ===== */
.spec-wrap{border-radius:var(--radius-lg);border:1px solid var(--line);overflow:hidden;background:var(--bg-panel)}
.spec-table{width:100%;border-collapse:collapse;font-size:.95rem}
.spec-table th,.spec-table td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--line)}
.spec-table thead th{background:rgba(37,99,235,.18);color:#fff;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase}
.spec-table tbody tr:hover{background:rgba(56,189,248,.06)}
.spec-table td:first-child{color:var(--muted)}
.spec-table td:last-child{color:#fff;font-weight:600}

/* ===== Steps ===== */
.steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.step{position:relative;padding:26px 24px 24px;border-radius:var(--radius-lg);background:linear-gradient(160deg,rgba(11,22,48,.82),rgba(5,13,32,.6));border:1px solid var(--line);transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease}
.step:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:0 22px 46px rgba(2,6,23,.6),0 0 26px rgba(56,189,248,.16)}
.step-num{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,#1d4ed8,#22d3ee);color:#03121f;font-weight:800;margin-bottom:16px}
.step h3{font-size:1.08rem;margin-bottom:8px}
.step p{margin:0;color:var(--muted);font-size:.94rem}

/* ===== Gallery carousel ===== */
.gallery-carousel{border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow)}
.gallery-carousel .carousel-item img{width:100%;height:clamp(240px,42vw,430px);object-fit:cover}
.gallery-carousel .carousel-caption{left:24px;right:auto;bottom:20px;text-align:left;background:rgba(3,7,18,.72);border:1px solid var(--line);border-radius:var(--radius);padding:12px 18px;backdrop-filter:blur(12px)}
.gallery-carousel .carousel-caption h3{font-size:.98rem;margin:0}
.gallery-carousel .carousel-caption p{margin:0;font-size:.82rem;color:var(--muted)}
.gallery-carousel .carousel-control-prev,.gallery-carousel .carousel-control-next{width:56px;opacity:.85}
.gallery-carousel .carousel-control-prev-icon,.gallery-carousel .carousel-control-next-icon{width:34px;height:34px;border-radius:50%;background-color:rgba(37,99,235,.7);background-size:52%}
.carousel-indicators [data-bs-target]{width:26px;height:4px;border-radius:4px;background-color:var(--brand-2)}

/* ===== Checklist ===== */
.check-list{display:grid;gap:14px}
.check-item{display:flex;gap:16px;padding:18px 20px;border-radius:var(--radius);background:rgba(10,20,44,.6);border:1px solid var(--line)}
.check-item i{color:var(--danger);font-size:1.1rem;margin-top:3px}
.check-item h4{font-size:.98rem;margin:0 0 4px}
.check-item p{margin:0;font-size:.9rem;color:var(--muted)}

/* ===== CTA bar ===== */
.cta-bar{position:relative;overflow:hidden;border-radius:var(--radius-xl);border:1px solid var(--line-strong);background:linear-gradient(110deg,rgba(13,26,58,.94),rgba(6,15,36,.9));padding:44px 40px;box-shadow:var(--shadow)}
.cta-bar::after{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(56,189,248,.32),transparent 66%);pointer-events:none}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:34px;align-items:center}
.cta-bar h2{font-size:clamp(1.35rem,2.7vw,1.95rem);margin-bottom:12px}
.cta-bar p{color:var(--text-soft);margin:0 0 20px;max-width:600px}
.pay-badges{display:flex;flex-wrap:wrap;gap:10px}
.pay-badges span{padding:8px 15px;border-radius:999px;font-size:.8rem;font-weight:600;background:rgba(56,189,248,.1);border:1px solid rgba(56,189,248,.28);color:#bae6fd}
.cta-timer{padding:22px;border-radius:var(--radius-lg);background:rgba(3,7,18,.6);border:1px solid var(--line);text-align:left}
.cta-timer strong{display:block;font-size:2.1rem;font-weight:800;color:#fff;line-height:1.1}
.cta-timer span{font-size:.82rem;color:var(--muted)}

/* ===== FAQ ===== */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:rgba(10,20,44,.55);overflow:hidden;transition:border-color .25s ease}
.faq-item[open]{border-color:var(--line-strong)}
.faq-item summary{cursor:pointer;padding:18px 22px;font-weight:600;color:#fff;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;font-size:.8rem;color:var(--brand-2);transition:transform .25s ease}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{margin:0;padding:0 22px 20px;color:var(--muted);font-size:.94rem}

/* ===== Related posts ===== */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.post-card{display:flex;flex-direction:column;gap:14px;padding:22px;border-radius:var(--radius-lg);background:var(--bg-panel);border:1px solid var(--line);transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease}
.post-card:hover{transform:translateY(-6px);border-color:var(--line-strong);box-shadow:0 24px 48px rgba(2,6,23,.6)}
.post-card .pc-tag{font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-weight:700}
.post-card h3{font-size:1.02rem;margin:0;line-height:1.4}
.post-card p{margin:0;font-size:.88rem;color:var(--muted)}
.post-card .pc-more{margin-top:auto;font-size:.86rem;font-weight:600;color:var(--brand-2)}
.post-card:hover .pc-more{color:#fff}

/* ===== Channels ===== */
.channel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.channel{display:block;padding:26px 24px;border-radius:var(--radius-lg);background:linear-gradient(150deg,rgba(12,24,52,.86),rgba(5,12,30,.62));border:1px solid var(--line);transition:transform .28s ease,border-color .28s ease}
.channel:hover{transform:translateY(-5px);border-color:var(--line-strong)}
.channel i{font-size:1.3rem;color:var(--brand-2);margin-bottom:14px;display:block}
.channel h3{font-size:1.02rem;margin-bottom:8px}
.channel p{margin:0;font-size:.88rem;color:var(--muted)}

/* ===== FAB ===== */
.fab-support{position:fixed;left:16px;bottom:96px;z-index:60;display:inline-flex;align-items:center;gap:10px;padding:12px 18px;border-radius:999px;font-size:.86rem;font-weight:600;color:#fff;background:rgba(7,7,13,.8);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,#22d3ee,#2563eb);background-origin:border-box;background-clip:padding-box,border-box;box-shadow:0 0 20px rgba(6,182,212,.45);transition:transform .25s ease,box-shadow .3s ease,opacity .3s ease;opacity:.85}
.fab-support i{color:var(--accent);animation:fabPulse 2.4s infinite}
.fab-support:hover{opacity:1;transform:translateY(-3px) scale(1.04);box-shadow:0 0 30px rgba(6,182,212,.7)}
.fab-support:active{transform:scale(.96)}
.fab-support .fab-dot{position:absolute;top:-2px;right:6px;width:10px;height:10px;border-radius:50%;background:var(--danger);box-shadow:0 0 10px var(--danger);animation:pulse 1.6s infinite}
@keyframes fabPulse{0%,100%{opacity:1}50%{opacity:.45}}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.25);opacity:.6}}

/* ===== Footer ===== */
.site-footer{background:linear-gradient(180deg,rgba(3,7,18,.4),rgba(4,10,26,.95));border-top:1px solid var(--line);padding:66px 0 30px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:38px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-about p{font-size:.9rem;color:var(--muted);line-height:1.7}
.footer-badges{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}
.f-badge{padding:6px 13px;border-radius:999px;font-size:.74rem;font-weight:600;color:var(--text-soft);background:rgba(148,163,184,.1);border:1px solid var(--line)}
.footer-col h4{font-size:.95rem;margin-bottom:16px;color:#fff}
.footer-col ul li{margin-bottom:10px;font-size:.88rem;color:var(--muted)}
.footer-col ul li a{color:var(--muted);transition:color .22s ease}
.footer-col ul li a:hover{color:var(--brand-2)}
.footer-note{font-size:.84rem;color:var(--muted);margin-top:14px}
.footer-note a{color:var(--brand-2)}
.footer-bottom{margin-top:44px;padding-top:22px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center}
.footer-bottom p{margin:0;font-size:.82rem;color:var(--muted)}
.footer-bottom .fb-links{display:flex;flex-wrap:wrap;gap:18px;font-size:.82rem}
.footer-bottom .fb-links a{color:var(--muted)}
.footer-bottom .fb-links a:hover{color:var(--brand-2)}

/* ===== Responsive ===== */
@media (max-width:1100px){
  .article-layout{grid-template-columns:1fr}
  .side-stack{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .main-nav{position:fixed;top:var(--header-h);left:0;right:0;flex-direction:column;align-items:stretch;gap:4px;padding:16px 20px 24px;margin-left:0;background:rgba(3,7,18,.98);border-bottom:1px solid var(--line);backdrop-filter:blur(18px);transform:translateY(-140%);transition:transform .32s ease;max-height:calc(100vh - var(--header-h));overflow-y:auto}
  .main-nav.is-open{transform:translateY(0)}
  .nav-link{padding:13px 14px;border-radius:var(--radius-sm);font-size:.95rem}
  .nav-toggle{display:grid;place-items:center}
  .steps{grid-template-columns:1fr}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .channel-grid{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr}
}
@media (max-width:767px){
  .section{padding:64px 0}
  .article-hero .hero-inner{padding:52px 0 48px}
  .brand-text strong{font-size:.84rem}
  .brand-text small{font-size:.64rem}
  .nav-actions .btn-sm{padding:10px 14px;font-size:.78rem}
  .side-stack{grid-template-columns:1fr}
  .post-grid{grid-template-columns:1fr}
  .spec-table th,.spec-table td{padding:12px 14px;font-size:.88rem}
  .cta-bar{padding:32px 24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .fab-support{left:12px;bottom:88px;padding:12px 14px}
  .fab-support span.fab-text{display:none}
}
@media (max-width:520px){
  .shell{padding:0 16px}
  .article-hero h1{font-size:1.55rem}
  .stat-pill{min-width:0;flex:1 1 100%}
  .gallery-carousel .carousel-caption{position:static;margin:0;border-radius:0;border-left:0;border-right:0}
  .spec-wrap{overflow-x:auto}
  .spec-table{min-width:520px}
}

/* roulang page: category1 */
:root{
  --bg:#030712;
  --bg-soft:#050d20;
  --bg-panel:rgba(11,22,48,.62);
  --bg-panel-2:rgba(8,18,41,.78);
  --brand:#2563eb;
  --brand-2:#38bdf8;
  --accent:#22d3ee;
  --lime:#a3e635;
  --danger:#f43f5e;
  --text:#f8fafc;
  --text-soft:#cbd5e1;
  --muted:#93a3b8;
  --line:rgba(148,163,184,.16);
  --line-strong:rgba(56,189,248,.34);
  --glow:0 0 30px rgba(37,99,235,.45);
  --glow-soft:0 0 20px rgba(56,189,248,.22);
  --radius-xl:26px;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 26px 60px rgba(2,6,23,.72);
  --shell:1200px;
  --header-h:74px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;padding-top:var(--header-h);
  font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.65;font-size:16px;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(900px 540px at 10% -10%, rgba(37,99,235,.30), transparent 62%),
    radial-gradient(760px 460px at 92% 4%, rgba(34,211,238,.16), transparent 64%),
    radial-gradient(700px 520px at 50% 120%, rgba(56,189,248,.10), transparent 70%),
    linear-gradient(180deg,#030712 0%,#050b1c 46%,#030712 100%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(rgba(56,189,248,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(56,189,248,.045) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 22%,#000 0%,transparent 78%);
  mask-image:radial-gradient(circle at 50% 22%,#000 0%,transparent 78%);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 14px}
h1,h2,h3,h4{margin:0 0 12px;line-height:1.28;font-weight:700;letter-spacing:-.01em}
a:focus-visible,button:focus-visible,.chip:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:var(--radius-sm)}

.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 20px}
.section{padding:86px 0;position:relative}
.section-alt{
  background:linear-gradient(180deg,rgba(8,18,41,.55),rgba(3,7,18,.1));
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.section-head{max-width:820px;margin-bottom:42px}
.section-title{font-size:clamp(1.5rem,3vw,2.15rem)}
.section-lead{color:var(--muted);font-size:1.02rem;margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:.74rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--brand-2);font-weight:700;margin-bottom:12px;
}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 28px;border-radius:999px;font-weight:600;font-size:.95rem;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .3s ease,background .3s ease,border-color .3s ease,color .22s ease;
}
.btn i{font-size:.9em}
.btn-primary-glow{background:linear-gradient(135deg,#1d4ed8 0%,#2563eb 45%,#38bdf8 100%);color:#fff;box-shadow:0 0 28px rgba(56,189,248,.42)}
.btn-primary-glow:hover{transform:translateY(-3px);box-shadow:0 0 40px rgba(56,189,248,.68);color:#fff}
.btn-primary-glow:active{transform:translateY(0);box-shadow:0 0 18px rgba(56,189,248,.5)}
.btn-ghost{background:rgba(148,163,184,.08);border-color:rgba(148,163,184,.3);color:var(--text-soft);backdrop-filter:blur(10px)}
.btn-ghost:hover{background:rgba(56,189,248,.14);border-color:var(--line-strong);color:#fff;transform:translateY(-3px)}
.btn-sm{padding:11px 20px;font-size:.86rem}
.btn-block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ===== Header ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--header-h);
  display:flex;align-items:center;background:rgba(3,7,18,.78);backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);transition:background .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{background:rgba(3,7,18,.94);box-shadow:0 14px 40px rgba(2,6,23,.7)}
.nav-shell{display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,#1d4ed8,#22d3ee);color:#03121f;font-size:1rem;box-shadow:var(--glow-soft);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:.95rem;font-weight:700;letter-spacing:-.01em;color:#fff}
.brand-text small{font-size:.7rem;color:var(--brand-2);letter-spacing:.06em;text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{position:relative;padding:9px 14px;border-radius:999px;font-size:.9rem;font-weight:500;color:var(--muted);transition:color .22s ease,background .22s ease}
.nav-link:hover{color:#fff;background:rgba(56,189,248,.1)}
.nav-link.active{color:#fff;background:rgba(56,189,248,.14);box-shadow:inset 0 0 0 1px rgba(56,189,248,.3)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;background:rgba(148,163,184,.1);
  border:1px solid var(--line);color:var(--text-soft);font-size:1rem;cursor:pointer;
  transition:background .22s ease,color .22s ease;
}
.nav-toggle:hover{background:rgba(56,189,248,.16);color:#fff}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;padding:0}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(3,7,18,.96) 0%,rgba(3,9,26,.9) 42%,rgba(4,10,28,.66) 72%,rgba(3,7,18,.93) 100%);
}
.hero-inner{position:relative;z-index:2;padding:88px 0 76px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:46px;align-items:start}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;padding:8px 16px;border-radius:999px;
  background:rgba(56,189,248,.12);border:1px solid rgba(56,189,248,.34);color:#a5f3fc;
  font-size:.74rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;margin-bottom:22px;
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 12px var(--lime);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.82)}}
.hero h1{font-size:clamp(1.8rem,4.2vw,3rem);font-weight:800;line-height:1.22;margin-bottom:20px}
.hero-lead{color:var(--text-soft);font-size:1.05rem;max-width:640px;margin-bottom:26px}
.hero-points{display:grid;gap:10px;margin:26px 0 0}
.hero-points li{display:flex;gap:10px;align-items:flex-start;color:var(--text-soft);font-size:.94rem}
.hero-points i{color:var(--accent);margin-top:4px;font-size:.85rem}

/* plan panel */
.plan-panel{
  background:linear-gradient(160deg,rgba(11,22,48,.86),rgba(5,13,32,.92));
  border:1px solid var(--line-strong);border-radius:var(--radius-xl);
  padding:28px 26px;box-shadow:var(--shadow);backdrop-filter:blur(14px);
}
.plan-panel h2{font-size:1.12rem;margin-bottom:6px}
.plan-panel .panel-sub{color:var(--muted);font-size:.86rem;margin-bottom:20px}
.plan-block{margin-bottom:18px}
.plan-label{display:block;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:700;margin-bottom:10px}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  padding:9px 14px;border-radius:999px;border:1px solid var(--line);
  background:rgba(148,163,184,.07);color:var(--text-soft);font-size:.82rem;font-weight:600;
  cursor:pointer;transition:background .22s ease,border-color .22s ease,color .22s ease,transform .18s ease;
}
.chip:hover{border-color:var(--line-strong);color:#fff;transform:translateY(-2px)}
.chip.is-active{background:linear-gradient(135deg,#1d4ed8,#22d3ee);border-color:transparent;color:#03121f;box-shadow:var(--glow-soft)}
.plan-rows{display:grid;gap:2px;margin:22px 0 16px;border-top:1px solid var(--line)}
.plan-rows li{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:12px 0;border-bottom:1px solid var(--line)}
.plan-rows li span{color:var(--muted);font-size:.88rem}
.plan-rows li strong{font-size:.98rem;color:#fff;font-weight:700;white-space:nowrap}
.plan-rows li.is-total strong{color:var(--lime)}
.plan-note{font-size:.84rem;color:var(--text-soft);background:rgba(56,189,248,.08);border-left:3px solid var(--brand-2);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:12px 14px;margin:0}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
  margin-top:54px;padding-top:28px;border-top:1px solid var(--line);
}
.stat strong{display:block;font-size:clamp(1.25rem,2.4vw,1.6rem);font-weight:800;color:#fff;line-height:1.2}
.stat span{font-size:.82rem;color:var(--muted)}

/* ===== Cards ===== */
.grid{display:grid;gap:22px}
.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))}
.glass-card{
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;backdrop-filter:blur(12px);
  transition:transform .26s ease,border-color .26s ease,box-shadow .3s ease,background .3s ease;
}
.glass-card:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:0 20px 44px rgba(2,6,23,.6),var(--glow-soft)}
.card-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:rgba(56,189,248,.12);border:1px solid rgba(56,189,248,.28);
  color:var(--brand-2);font-size:1.05rem;margin-bottom:16px;
}
.glass-card h3{font-size:1.05rem;margin-bottom:10px}
.glass-card p{color:var(--muted);font-size:.92rem;margin:0}
.card-tag{
  display:inline-block;padding:5px 11px;border-radius:999px;font-size:.7rem;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;background:rgba(163,230,53,.12);
  color:var(--lime);border:1px solid rgba(163,230,53,.3);margin-bottom:12px;
}

/* ===== Budget split ===== */
.split{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:42px;align-items:center}
.split-media{position:relative;border-radius:var(--radius-xl);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 figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:16px 20px;font-size:.82rem;color:var(--text-soft);
  background:linear-gradient(180deg,transparent,rgba(3,7,18,.92));
}
.budget-row{display:grid;grid-template-columns:auto minmax(0,1fr);gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
.budget-row:first-of-type{padding-top:0}
.budget-row:last-of-type{border-bottom:0;padding-bottom:0}
.budget-num{
  width:52px;height:52px;border-radius:16px;display:grid;place-items:center;font-weight:800;font-size:.95rem;
  background:linear-gradient(135deg,#1d4ed8,#22d3ee);color:#03121f;box-shadow:var(--glow-soft);
}
.budget-row h3{font-size:1rem;margin-bottom:6px}
.budget-row p{color:var(--muted);font-size:.9rem;margin:0}
.budget-row .money{color:var(--brand-2);font-weight:700}

/* ===== Steps ===== */
.steps{display:grid;gap:16px;counter-reset:step}
.step{
  display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;align-items:flex-start;
  background:var(--bg-panel-2);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px 24px;transition:border-color .25s ease,transform .25s ease;
}
.step:hover{border-color:var(--line-strong);transform:translateX(4px)}
.step-num{
  width:52px;height:52px;border-radius:50%;display:grid;place-items:center;
  font-weight:800;color:#03121f;background:linear-gradient(135deg,#38bdf8,#a3e635);font-size:1rem;
}
.step h3{font-size:1rem;margin-bottom:8px}
.step p{color:var(--muted);font-size:.92rem;margin:0}

/* ===== Tables ===== */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--bg-panel);backdrop-filter:blur(10px)}
table.data{width:100%;border-collapse:collapse;min-width:640px;font-size:.9rem}
table.data caption{text-align:left;padding:18px 22px 0;color:var(--text-soft);font-weight:600;font-size:.95rem}
table.data th,table.data td{padding:14px 20px;text-align:left;border-bottom:1px solid var(--line)}
table.data thead th{font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--brand-2);font-weight:700;background:rgba(56,189,248,.06)}
table.data tbody tr:last-child td{border-bottom:0}
table.data tbody tr:hover{background:rgba(56,189,248,.06)}
table.data td strong{color:#fff}
.status-ok{color:var(--lime);font-weight:700}
.status-hold{color:#facc15;font-weight:700}
.status-cut{color:var(--danger);font-weight:700}
.data-note{color:var(--muted);font-size:.85rem;margin-top:14px}

/* ===== Error list ===== */
.err-list{display:grid;gap:14px}
.err-item{
  display:grid;grid-template-columns:44px minmax(0,1fr);gap:16px;align-items:flex-start;
  padding:18px 20px;border-radius:var(--radius);border:1px solid var(--line);background:rgba(244,63,94,.05);
  transition:border-color .25s ease,background .25s ease;
}
.err-item:hover{border-color:rgba(244,63,94,.42);background:rgba(244,63,94,.09)}
.err-item i{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:rgba(244,63,94,.14);color:#fda4af}
.err-item h3{font-size:.98rem;margin-bottom:6px}
.err-item p{color:var(--muted);font-size:.9rem;margin:0}

/* ===== Quotes ===== */
.quote-card{
  background:var(--bg-panel-2);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;display:flex;flex-direction:column;gap:16px;height:100%;
}
.quote-card .stars{color:#facc15;font-size:.85rem;letter-spacing:2px}
.quote-card p{color:var(--text-soft);font-size:.94rem;margin:0;flex:1}
.quote-who{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:16px}
.quote-avatar{
  width:42px;height:42px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:.9rem;
  background:linear-gradient(135deg,#1d4ed8,#22d3ee);color:#03121f;
}
.quote-who strong{display:block;font-size:.9rem;color:#fff}
.quote-who span{font-size:.78rem;color:var(--muted)}

/* ===== FAQ ===== */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-panel);overflow:hidden;transition:border-color .25s ease}
.faq-item.is-open{border-color:var(--line-strong)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;background:transparent;border:0;color:#fff;text-align:left;
  font-size:.98rem;font-weight:600;cursor:pointer;transition:background .22s ease;
}
.faq-q:hover{background:rgba(56,189,248,.07)}
.faq-q i{color:var(--brand-2);transition:transform .3s ease;flex-shrink:0}
.faq-item.is-open .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;opacity:0;overflow:hidden;transition:max-height .38s ease,opacity .3s ease}
.faq-item.is-open .faq-a{max-height:340px;opacity:1}
.faq-a p{padding:0 22px 20px;color:var(--muted);font-size:.92rem;margin:0}

/* ===== Channels ===== */
.channel-card{
  display:flex;flex-direction:column;gap:14px;height:100%;
  background:linear-gradient(160deg,rgba(11,22,48,.8),rgba(5,13,32,.9));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px 24px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .3s ease;
}
.channel-card:hover{transform:translateY(-6px);border-color:var(--line-strong);box-shadow:0 22px 48px rgba(2,6,23,.62),var(--glow-soft)}
.channel-card h3{font-size:1.02rem;margin:0}
.channel-card p{color:var(--muted);font-size:.9rem;margin:0;flex:1}
.channel-link{display:inline-flex;align-items:center;gap:8px;color:var(--brand-2);font-weight:600;font-size:.88rem}
.channel-link i{transition:transform .25s ease}
.channel-card:hover .channel-link i{transform:translateX(5px)}

/* ===== News ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;height:100%;
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-lg);
  transition:transform .25s ease,border-color .25s ease,box-shadow .3s ease;
}
.news-card:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:0 22px 46px rgba(2,6,23,.6)}
.news-thumb{display:block;aspect-ratio:16/10;overflow:hidden;background:rgba(8,18,41,.8)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.news-card:hover .news-thumb img{transform:scale(1.06)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-tag{align-self:flex-start;padding:4px 10px;border-radius:999px;font-size:.68rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;background:rgba(56,189,248,.13);color:#a5f3fc;border:1px solid rgba(56,189,248,.28)}
.news-body h3{font-size:.98rem;margin:0;line-height:1.45}
.news-body h3 a:hover{color:var(--brand-2)}
.news-body p{color:var(--muted);font-size:.88rem;margin:0;flex:1}
.news-time{font-size:.78rem;color:var(--muted)}
.empty-note{padding:28px 24px;border:1px dashed var(--line);border-radius:var(--radius-lg);color:var(--muted);font-size:.94rem;margin:0}
.list-more{margin-top:30px;display:flex;justify-content:flex-start}

/* ===== CTA band ===== */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-xl);border:1px solid var(--line-strong);
  background:linear-gradient(135deg,rgba(29,78,216,.34),rgba(5,13,32,.92) 58%,rgba(34,211,238,.2));
  padding:44px 40px;box-shadow:var(--shadow);
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,189,248,.34),transparent 68%);pointer-events:none;
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:34px;align-items:center}
.cta-band h2{font-size:clamp(1.35rem,2.6vw,1.9rem);margin-bottom:12px}
.cta-band p{color:var(--text-soft);font-size:.96rem;margin:0}
.pay-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.pay-badge{
  padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:rgba(3,7,18,.5);
  font-size:.8rem;color:var(--text-soft);display:inline-flex;align-items:center;gap:8px;
}
.pay-badge i{color:var(--accent);font-size:.85rem}
.cta-side{display:grid;gap:12px}
.cta-side .btn{width:100%}

/* ===== Footer ===== */
.site-footer{
  position:relative;margin-top:26px;padding:64px 0 26px;
  background:linear-gradient(180deg,rgba(5,13,32,.9),rgba(3,7,18,1));
  border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-col h4{font-size:.95rem;font-weight:700;margin:0 0 16px;color:#fff}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul li a,.footer-col ul li span{color:var(--muted);font-size:.9rem;transition:color .2s ease}
.footer-col ul li a:hover{color:var(--brand-2)}
.footer-about p{color:var(--muted);font-size:.9rem;line-height:1.75;margin:0 0 18px}
.footer-badges{display:flex;flex-wrap:wrap;gap:10px}
.f-badge{padding:6px 12px;border-radius:999px;border:1px solid var(--line);background:rgba(148,163,184,.08);font-size:.76rem;color:var(--text-soft)}
.footer-note{margin-top:14px;font-size:.85rem;color:var(--muted)}
.footer-note a{color:var(--brand-2)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
}
.footer-bottom p{margin:0;font-size:.83rem;color:var(--muted)}
.footer-legal{display:flex;gap:18px;flex-wrap:wrap}
.footer-legal a{font-size:.83rem;color:var(--muted);transition:color .2s ease}
.footer-legal a:hover{color:var(--brand-2)}

/* ===== FAB ===== */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:50;
  display:inline-flex;align-items:center;gap:12px;min-height:56px;padding:12px 20px 12px 14px;
  border-radius:999px;background:rgba(7,7,13,.8);backdrop-filter:blur(14px);
  border:1px solid transparent;
  background-image:linear-gradient(rgba(7,7,13,.86),rgba(7,7,13,.86)),
                   linear-gradient(135deg,#22d3ee,#2563eb 55%,#a3e635);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 20px rgba(6,182,212,.45);
  color:#e2e8f0;font-size:.84rem;font-weight:600;
  opacity:.78;transition:opacity .25s ease,transform .25s ease,box-shadow .3s ease;
  animation:fabPulse 3.6s ease-in-out infinite;
}
@keyframes fabPulse{0%,100%{box-shadow:0 0 18px rgba(6,182,212,.4)}50%{box-shadow:0 0 30px rgba(37,99,235,.62)}}
.fab:hover{opacity:1;transform:translateY(-3px) scale(1.04);box-shadow:0 0 34px rgba(6,182,212,.7);color:#fff}
.fab:active{transform:scale(.96) translateY(1px)}
.fab-ic{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;flex-shrink:0;
  background:linear-gradient(135deg,#0ea5e9,#22d3ee);color:#04121c;font-size:.95rem;
}
.fab:hover .fab-ic i{animation:flick .5s linear 2}
@keyframes flick{0%,100%{opacity:1}50%{opacity:.35}}
.fab-dot{
  position:absolute;top:6px;right:10px;width:9px;height:9px;border-radius:50%;background:#f43f5e;
  box-shadow:0 0 10px rgba(244,63,94,.9);animation:pulse 1.4s infinite;
}
.fab-wrap{position:relative;display:inline-flex}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .split{grid-template-columns:1fr;gap:30px}
  .cta-grid{grid-template-columns:1fr;gap:24px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .main-nav{
    position:absolute;top:var(--header-h);left:0;right:0;flex-direction:column;align-items:stretch;
    gap:4px;padding:16px 20px 22px;margin-left:0;background:rgba(3,7,18,.97);
    border-bottom:1px solid var(--line);backdrop-filter:blur(18px);
    transform:translateY(-12px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
  }
  .main-nav.is-open{transform:translateY(0);opacity:1;visibility:visible;pointer-events:auto}
  .nav-link{padding:12px 14px;border-radius:12px}
  .nav-toggle{display:grid;place-items:center}
}
@media (max-width:768px){
  body{font-size:15.5px}
  .section{padding:64px 0}
  .hero-inner{padding:64px 0 58px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:40px}
  .news-grid{grid-template-columns:1fr}
  .plan-panel{padding:24px 20px}
  .cta-band{padding:32px 24px}
  .step{grid-template-columns:1fr;gap:14px}
  .fab{left:12px;bottom:88px;padding:10px 16px 10px 11px;font-size:.8rem}
}
@media (max-width:520px){
  .shell{padding:0 16px}
  .brand-text strong{font-size:.86rem}
  .brand-text small{font-size:.62rem}
  .nav-actions .btn-sm{padding:9px 13px;font-size:.76rem}
  .hero h1{font-size:1.6rem}
  .section-title{font-size:1.32rem}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .budget-row{grid-template-columns:1fr}
  .fab-label{display:none}
  .fab{padding:12px}
  .faq-q{font-size:.92rem;padding:16px 18px}
  .faq-a p{padding:0 18px 18px}
}

/* roulang page: category2 */
:root{
  --bg:#030712;
  --bg-soft:#050d20;
  --bg-panel:rgba(11,22,48,.62);
  --bg-panel-2:rgba(8,18,41,.78);
  --brand:#2563eb;
  --brand-2:#38bdf8;
  --accent:#22d3ee;
  --lime:#a3e635;
  --danger:#f43f5e;
  --text:#f8fafc;
  --text-soft:#cbd5e1;
  --muted:#93a3b8;
  --line:rgba(148,163,184,.16);
  --line-strong:rgba(56,189,248,.34);
  --glow:0 0 30px rgba(37,99,235,.45);
  --glow-soft:0 0 20px rgba(56,189,248,.22);
  --radius-xl:26px;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 26px 60px rgba(2,6,23,.72);
  --shell:1200px;
  --header-h:74px;
  --bs-body-font-family:'Be Vietnam Pro',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  padding-top:var(--header-h);
  font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(900px 540px at 10% -10%, rgba(37,99,235,.30), transparent 62%),
    radial-gradient(760px 460px at 92% 4%, rgba(34,211,238,.16), transparent 64%),
    radial-gradient(700px 520px at 50% 120%, rgba(56,189,248,.10), transparent 70%),
    linear-gradient(180deg,#030712 0%,#050b1c 46%,#030712 100%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(rgba(56,189,248,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(56,189,248,.045) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 22%,#000 0%,transparent 78%);
  mask-image:radial-gradient(circle at 50% 22%,#000 0%,transparent 78%);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
ul{margin:0;padding:0;list-style:none}
p{margin:0 0 14px}
::selection{background:rgba(56,189,248,.35);color:#fff}
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 20px}

/* ===== Sections ===== */
.section{padding:86px 0;position:relative}
.section-alt{background:linear-gradient(180deg,rgba(8,18,41,.55),rgba(3,7,18,.1));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:44px}
.section-head.is-center{margin-left:auto;margin-right:auto;text-align:center}
.section-title{font-size:clamp(1.55rem,3.1vw,2.3rem);font-weight:800;line-height:1.28;margin:0 0 14px;letter-spacing:-.01em}
.section-lead{color:var(--muted);font-size:1.02rem;margin:0}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:.74rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#7dd3fc;margin-bottom:16px}
.eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--brand-2),transparent)}
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 28px;border-radius:999px;font-weight:600;font-size:.95rem;line-height:1.2;border:1px solid transparent;cursor:pointer;transition:transform .22s ease,box-shadow .3s ease,background .3s ease,border-color .3s ease,color .22s ease}
.btn i{font-size:.9em}
.btn-primary-glow{background:linear-gradient(135deg,#1d4ed8 0%,#2563eb 45%,#38bdf8 100%);color:#fff;box-shadow:0 0 28px rgba(56,189,248,.42)}
.btn-primary-glow:hover{transform:translateY(-3px);box-shadow:0 0 40px rgba(56,189,248,.68);color:#fff}
.btn-primary-glow:active{transform:translateY(0);box-shadow:0 0 18px rgba(56,189,248,.5)}
.btn-ghost{background:rgba(148,163,184,.08);border-color:rgba(148,163,184,.3);color:var(--text-soft);backdrop-filter:blur(10px)}
.btn-ghost:hover{background:rgba(56,189,248,.14);border-color:var(--line-strong);color:#fff;transform:translateY(-3px)}
.btn-sm{padding:11px 20px;font-size:.86rem}
.btn-block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* ===== Header ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--header-h);display:flex;align-items:center;background:rgba(3,7,18,.78);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);transition:background .3s ease,box-shadow .3s ease}
.site-header.is-scrolled{background:rgba(3,7,18,.94);box-shadow:0 14px 40px rgba(2,6,23,.7)}
.nav-shell{display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,#1d4ed8,#22d3ee);color:#03121f;font-size:1rem;box-shadow:var(--glow-soft)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:.95rem;font-weight:700;letter-spacing:-.01em}
.brand-text small{font-size:.7rem;color:var(--brand-2);letter-spacing:.06em;text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{position:relative;padding:9px 14px;border-radius:999px;font-size:.9rem;font-weight:500;color:var(--muted);transition:color .22s ease,background .22s ease}
.nav-link:hover{color:#fff;background:rgba(56,189,248,.1)}
.nav-link.active{color:#fff;background:rgba(56,189,248,.14);box-shadow:inset 0 0 0 1px rgba(56,189,248,.3)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;background:rgba(148,163,184,.1);border:1px solid var(--line);color:var(--text-soft);font-size:1rem;cursor:pointer;transition:background .22s ease,color .22s ease}
.nav-toggle:hover{background:rgba(56,189,248,.16);color:#fff}

/* ===== Hero (magazine split) ===== */
.cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(3,7,18,.97) 0%,rgba(3,9,26,.9) 42%,rgba(4,10,28,.7) 74%,rgba(3,7,18,.94) 100%)}
.hero-inner{position:relative;z-index:2;padding:78px 0 72px}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:10px;padding:8px 16px;border-radius:999px;background:rgba(56,189,248,.12);border:1px solid rgba(56,189,248,.34);color:#a5f3fc;font-size:.76rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;margin-bottom:24px}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 12px var(--lime);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.8)}}
.hero h1{font-size:clamp(1.85rem,4.2vw,3.05rem);font-weight:800;line-height:1.22;margin:0 0 20px;letter-spacing:-.015em;text-shadow:0 8px 40px rgba(3,7,18,.8)}
.hero h1 span{background:linear-gradient(120deg,#38bdf8,#22d3ee 45%,#a3e635);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:1.06rem;color:var(--text-soft);max-width:620px;margin-bottom:30px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:8px 15px;border-radius:999px;background:var(--bg-panel);border:1px solid var(--line);font-size:.82rem;color:var(--text-soft)}
.chip i{color:var(--accent);font-size:.85em}

.feature-card{position:relative;border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--line-strong);background:var(--bg-panel-2);box-shadow:var(--shadow),var(--glow-soft);backdrop-filter:blur(14px)}
.feature-card .fc-img{position:relative;aspect-ratio:16/10;overflow:hidden}
.feature-card .fc-img img{width:100%;height:100%;object-fit:cover;transition:transform .7s ease}
.feature-card:hover .fc-img img{transform:scale(1.06)}
.feature-card .fc-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(3,7,18,.1),rgba(3,7,18,.85))}
.fc-tag{position:absolute;top:14px;left:14px;z-index:2;padding:6px 13px;border-radius:999px;background:linear-gradient(135deg,#2563eb,#22d3ee);color:#03121f;font-size:.72rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.fc-body{padding:22px 22px 24px}
.fc-body h3{font-size:1.06rem;font-weight:700;margin:0 0 8px}
.fc-body p{font-size:.9rem;color:var(--muted);margin-bottom:16px}
.fc-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-top:1px dashed var(--line);font-size:.88rem;color:var(--text-soft)}
.fc-list li span:last-child{color:#7dd3fc;font-weight:600}

/* ===== Panels ===== */
.panel{border-radius:var(--radius-lg);background:var(--bg-panel);border:1px solid var(--line);padding:26px;backdrop-filter:blur(12px);transition:border-color .3s ease,transform .3s ease,box-shadow .3s ease}
.panel:hover{border-color:var(--line-strong);box-shadow:0 18px 46px rgba(2,6,23,.55),var(--glow-soft)}
.panel h3{font-size:1.05rem;font-weight:700;margin:0 0 10px}
.panel p{color:var(--muted);font-size:.92rem;margin:0}
.panel-icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:rgba(56,189,248,.12);border:1px solid rgba(56,189,248,.3);color:#7dd3fc;font-size:1.05rem;margin-bottom:16px}

/* ===== Value list ===== */
.value-item{display:grid;grid-template-columns:56px 1fr;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}
.value-item:last-child{border-bottom:0}
.value-num{font-size:1.4rem;font-weight:800;color:transparent;background:linear-gradient(140deg,#38bdf8,#22d3ee);-webkit-background-clip:text;background-clip:text;line-height:1}
.value-item h3{font-size:1.06rem;font-weight:700;margin:0 0 8px}
.value-item p{color:var(--muted);font-size:.94rem;margin:0}
.side-stats{display:grid;gap:14px}
.stat-mini{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;border-radius:var(--radius);background:var(--bg-panel-2);border:1px solid var(--line)}
.stat-mini strong{font-size:1.35rem;font-weight:800;color:#7dd3fc;letter-spacing:-.02em}
.stat-mini span{font-size:.85rem;color:var(--muted);text-align:right}

/* ===== Time frame cards ===== */
.frame-card{position:relative;border-radius:var(--radius-lg);padding:26px 24px;background:linear-gradient(160deg,rgba(11,22,48,.85),rgba(5,13,32,.65));border:1px solid var(--line);overflow:hidden;transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease}
.frame-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#2563eb,#22d3ee);opacity:.85}
.frame-card:hover{transform:translateY(-6px);border-color:var(--line-strong);box-shadow:0 22px 50px rgba(2,6,23,.6),var(--glow-soft)}
.frame-time{font-size:1.32rem;font-weight:800;letter-spacing:-.02em;margin-bottom:6px;color:#fff}
.frame-label{font-size:.76rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#7dd3fc;margin-bottom:16px}
.frame-card p{color:var(--muted);font-size:.9rem;margin-bottom:16px}
.frame-list li{position:relative;padding-left:22px;font-size:.87rem;color:var(--text-soft);margin-bottom:8px}
.frame-list li::before{content:"\f058";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;left:0;top:1px;font-size:.76rem;color:var(--accent)}

/* ===== Signal list ===== */
.signal-list li{display:grid;grid-template-columns:38px 1fr;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line)}
.signal-list li:last-child{border-bottom:0}
.signal-list i{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:rgba(163,230,53,.12);border:1px solid rgba(163,230,53,.28);color:var(--lime);font-size:.85rem}
.signal-list strong{display:block;font-size:.95rem;font-weight:600;margin-bottom:3px}
.signal-list span{font-size:.87rem;color:var(--muted)}

/* ===== Steps ===== */
.steps{counter-reset:step}
.step-row{display:grid;grid-template-columns:64px 1fr;gap:22px;padding:24px 0;border-bottom:1px solid var(--line)}
.step-row:last-child{border-bottom:0}
.step-index{counter-increment:step;width:56px;height:56px;border-radius:16px;display:grid;place-items:center;font-weight:800;font-size:1.15rem;color:#03121f;background:linear-gradient(140deg,#38bdf8,#22d3ee);box-shadow:var(--glow-soft)}
.step-index::before{content:counter(step,decimal-leading-zero)}
.step-row h3{font-size:1.05rem;font-weight:700;margin:0 0 8px}
.step-row p{color:var(--muted);font-size:.93rem;margin:0}

/* ===== Stats & table ===== */
.stat-card{border-radius:var(--radius-lg);padding:22px;background:var(--bg-panel);border:1px solid var(--line);text-align:left}
.stat-card b{display:block;font-size:1.9rem;font-weight:800;letter-spacing:-.03em;background:linear-gradient(120deg,#38bdf8,#a3e635);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.1}
.stat-card span{display:block;font-size:.85rem;color:var(--muted);margin-top:8px}
.table-wrap{margin-top:34px;border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--bg-panel-2);overflow:hidden}
.table-wrap .table{margin:0;color:var(--text);--bs-table-bg:transparent}
.table thead th{background:rgba(37,99,235,.18);color:#bfdbfe;font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;font-weight:700;border-bottom:1px solid var(--line-strong);padding:16px 18px;white-space:nowrap}
.table tbody td{padding:16px 18px;font-size:.9rem;color:var(--text-soft);border-bottom:1px solid var(--line);vertical-align:middle}
.table tbody tr:last-child td{border-bottom:0}
.table tbody tr:hover td{background:rgba(56,189,248,.06)}
.table tbody td:first-child{color:#fff;font-weight:600;white-space:nowrap}
.tag-pill{display:inline-block;padding:4px 12px;border-radius:999px;font-size:.76rem;font-weight:700;background:rgba(163,230,53,.14);color:#bef264;border:1px solid rgba(163,230,53,.3)}
.tag-pill.mid{background:rgba(56,189,248,.14);color:#7dd3fc;border-color:rgba(56,189,248,.32)}
.tag-pill.low{background:rgba(244,63,94,.14);color:#fda4af;border-color:rgba(244,63,94,.32)}

/* ===== Mistakes ===== */
.mistake{display:grid;grid-template-columns:42px 1fr;gap:16px;padding:20px 22px;border-radius:var(--radius);background:rgba(244,63,94,.06);border:1px solid rgba(244,63,94,.22)}
.mistake i{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(244,63,94,.14);color:#fda4af;font-size:.9rem}
.mistake h3{font-size:.98rem;font-weight:700;margin:0 0 6px}
.mistake p{font-size:.88rem;color:var(--muted);margin:0}

/* ===== Category matrix ===== */
.cat-card{display:block;border-radius:var(--radius-lg);padding:26px;background:linear-gradient(160deg,rgba(11,22,48,.85),rgba(5,13,32,.6));border:1px solid var(--line);transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease}
.cat-card:hover{transform:translateY(-6px);border-color:var(--line-strong);box-shadow:0 22px 50px rgba(2,6,23,.6),var(--glow-soft)}
.cat-card .cat-ico{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:rgba(56,189,248,.12);border:1px solid rgba(56,189,248,.3);color:#7dd3fc;margin-bottom:18px;font-size:1.05rem}
.cat-card h3{font-size:1.06rem;font-weight:700;margin:0 0 8px}
.cat-card p{font-size:.9rem;color:var(--muted);margin:0 0 16px}
.cat-card .cat-more{font-size:.85rem;font-weight:600;color:#7dd3fc;display:inline-flex;align-items:center;gap:8px}
.cat-card.is-current{border-color:var(--line-strong);box-shadow:inset 0 0 0 1px rgba(56,189,248,.25)}

/* ===== Post list ===== */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.post-card{border-radius:var(--radius-lg);background:var(--bg-panel);border:1px solid var(--line);transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease}
.post-card:hover{transform:translateY(-6px);border-color:var(--line-strong);box-shadow:0 22px 50px rgba(2,6,23,.6)}
.post-link{display:block;padding:24px}
.post-tag{display:inline-block;padding:4px 12px;border-radius:999px;font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;background:rgba(56,189,248,.14);color:#7dd3fc;border:1px solid rgba(56,189,248,.3);margin-bottom:14px}
.post-link h3{font-size:1.02rem;font-weight:700;line-height:1.45;margin:0 0 10px;color:#fff}
.post-link p{font-size:.88rem;color:var(--muted);margin:0 0 14px}
.post-meta{font-size:.78rem;color:#64748b;letter-spacing:.04em}
.empty-note{padding:26px;border-radius:var(--radius);border:1px dashed var(--line-strong);color:var(--muted);text-align:center;font-size:.95rem}

/* ===== FAQ ===== */
.faq-accordion .accordion-item{background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;overflow:hidden}
.faq-accordion .accordion-button{background:transparent;color:var(--text);font-weight:600;font-size:.98rem;line-height:1.5;padding:18px 22px;box-shadow:none}
.faq-accordion .accordion-button:not(.collapsed){color:#a5f3fc;background:rgba(56,189,248,.08)}
.faq-accordion .accordion-button:focus{box-shadow:0 0 0 3px rgba(56,189,248,.22);border-color:transparent}
.faq-accordion .accordion-button::after{filter:invert(70%) sepia(45%) saturate(700%) hue-rotate(160deg)}
.faq-accordion .accordion-body{padding:0 22px 22px;color:var(--muted);font-size:.92rem}

/* ===== CTA ===== */
.cta-box{position:relative;overflow:hidden;border-radius:var(--radius-xl);border:1px solid var(--line-strong);background:linear-gradient(140deg,rgba(29,78,216,.28),rgba(8,18,41,.85));padding:40px 36px;box-shadow:var(--shadow)}
.cta-box::after{content:"";position:absolute;width:280px;height:280px;right:-80px;top:-100px;border-radius:50%;background:radial-gradient(circle,rgba(34,211,238,.32),transparent 68%)}
.cta-box h3{font-size:clamp(1.3rem,2.4vw,1.75rem);font-weight:800;margin:0 0 12px;position:relative;z-index:2}
.cta-box p{color:var(--text-soft);font-size:.95rem;max-width:620px;position:relative;z-index:2;margin-bottom:24px}
.cta-box .btn-row{position:relative;z-index:2}
.pay-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;position:relative;z-index:2}
.pay-badge{padding:8px 15px;border-radius:10px;background:rgba(3,7,18,.6);border:1px solid var(--line);font-size:.8rem;font-weight:600;color:var(--text-soft)}

/* ===== Footer ===== */
.site-footer{margin-top:0;padding:66px 0 26px;background:linear-gradient(180deg,rgba(3,7,18,.2),rgba(2,6,23,.95));border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.footer-about p{font-size:.87rem;color:var(--muted);line-height:1.7}
.footer-badges{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}
.f-badge{padding:6px 13px;border-radius:999px;background:rgba(148,163,184,.08);border:1px solid var(--line);font-size:.73rem;font-weight:600;color:var(--text-soft)}
.footer-col h4{font-size:.83rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#7dd3fc;margin-bottom:18px}
.footer-col ul li{margin-bottom:11px}
.footer-col ul li a,.footer-col ul li span{font-size:.87rem;color:var(--muted);transition:color .22s ease}
.footer-col ul li a:hover{color:#fff}
.footer-note{font-size:.82rem;color:var(--muted);margin-top:14px}
.footer-note a{color:#7dd3fc}
.footer-bottom{margin-top:46px;padding-top:22px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center}
.footer-bottom p{font-size:.8rem;color:#64748b;margin:0}
.footer-legal{display:flex;flex-wrap:wrap;gap:18px}
.footer-legal span{font-size:.8rem;color:#64748b}

/* ===== FAB ===== */
.fab{position:fixed;left:16px;bottom:96px;z-index:50;width:56px;height:56px;border-radius:999px;display:grid;place-items:center;background:rgba(7,7,13,.82);backdrop-filter:blur(14px);border:2px solid transparent;background-image:linear-gradient(rgba(7,7,13,.88),rgba(7,7,13,.88)),linear-gradient(135deg,#a3e635,#06b6d4);background-origin:border-box;background-clip:padding-box,border-box;color:#a3e635;font-size:1.15rem;box-shadow:0 0 20px rgba(6,182,212,.45);opacity:.78;transition:transform .3s ease,box-shadow .3s ease,opacity .3s ease,color .3s ease}
.fab:hover{opacity:1;transform:scale(1.1) rotate(-6deg);box-shadow:0 0 34px rgba(6,182,212,.75);color:#22d3ee}
.fab:active{transform:scale(.95) translateY(3px)}
.fab .fab-dot{position:absolute;top:2px;right:2px;width:12px;height:12px;border-radius:50%;background:#f43f5e;box-shadow:0 0 10px #f43f5e;animation:pulse 1.6s infinite}
.fab .fab-tip{position:absolute;left:66px;white-space:nowrap;background:rgba(7,7,13,.92);border:1px solid var(--line-strong);color:var(--text-soft);font-size:.76rem;padding:7px 13px;border-radius:10px;opacity:0;pointer-events:none;transition:opacity .25s ease}
.fab:hover .fab-tip{opacity:1}

/* ===== Responsive ===== */
@media (max-width:1100px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .split{grid-template-columns:1fr;gap:32px}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .main-nav{gap:2px}
  .nav-link{padding:8px 10px;font-size:.85rem}
}
@media (max-width:900px){
  .main-nav{position:absolute;top:var(--header-h);left:0;right:0;flex-direction:column;align-items:stretch;gap:4px;padding:14px 20px 20px;background:rgba(3,7,18,.98);border-bottom:1px solid var(--line);backdrop-filter:blur(18px);display:none}
  .main-nav.is-open{display:flex}
  .nav-link{padding:12px 14px;font-size:.95rem;border-radius:var(--radius-sm)}
  .nav-toggle{display:grid;place-items:center}
  .nav-actions .btn{display:none}
}
@media (max-width:768px){
  .section{padding:62px 0}
  .grid-3{grid-template-columns:1fr}
  .post-grid{grid-template-columns:1fr}
  .hero-inner{padding:56px 0 52px}
  .step-row{grid-template-columns:52px 1fr;gap:16px}
  .value-item{grid-template-columns:44px 1fr;gap:14px}
  .table thead th,.table tbody td{padding:13px 14px;font-size:.84rem}
  .cta-box{padding:30px 22px}
}
@media (max-width:520px){
  .grid-2,.grid-4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .brand-text strong{font-size:.84rem}
  .brand-text small{font-size:.62rem}
  .stat-card b{font-size:1.55rem}
  .frame-time{font-size:1.18rem}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category3 */
:root{
  --bg:#030712;
  --bg-soft:#050d20;
  --bg-panel:rgba(11,22,48,.62);
  --bg-panel-2:rgba(8,18,41,.78);
  --brand:#2563eb;
  --brand-2:#38bdf8;
  --accent:#22d3ee;
  --lime:#a3e635;
  --danger:#f43f5e;
  --text:#f8fafc;
  --text-soft:#cbd5e1;
  --muted:#93a3b8;
  --line:rgba(148,163,184,.16);
  --line-strong:rgba(56,189,248,.34);
  --glow:0 0 30px rgba(37,99,235,.45);
  --glow-soft:0 0 20px rgba(56,189,248,.22);
  --radius-xl:26px;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 26px 60px rgba(2,6,23,.72);
  --shell:1200px;
  --header-h:74px;
  --bs-body-font-family:'Be Vietnam Pro',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{
  margin:0;
  padding-top:var(--header-h);
  font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  background:
    radial-gradient(900px 540px at 10% -10%, rgba(37,99,235,.30), transparent 62%),
    radial-gradient(760px 460px at 92% 4%, rgba(34,211,238,.16), transparent 64%),
    radial-gradient(700px 520px at 50% 120%, rgba(56,189,248,.10), transparent 70%),
    linear-gradient(180deg,#030712 0%,#050b1c 46%,#030712 100%);
  pointer-events:none;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background-image:linear-gradient(rgba(56,189,248,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(56,189,248,.045) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 22%,#000 0%,transparent 78%);
  mask-image:radial-gradient(circle at 50% 22%,#000 0%,transparent 78%);
  pointer-events:none;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{line-height:1.3;margin:0 0 14px;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(1.85rem,4.2vw,3.05rem);font-weight:800}
h3{font-size:1.12rem}
h4{font-size:1rem}
p{margin:0 0 14px}
ul,ol{margin:0;padding:0;list-style:none}
hr{border:0;border-top:1px solid var(--line);margin:0}
::selection{background:rgba(56,189,248,.35);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 22px}
.section{padding:88px 0;position:relative}
.section-alt{
  background:linear-gradient(180deg,rgba(8,18,41,.55),rgba(3,7,18,.1));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section-head{max-width:800px;margin-bottom:46px}
.section-title{font-size:clamp(1.5rem,3vw,2.2rem);margin-bottom:14px}
.section-lead{color:var(--muted);font-size:1.02rem;margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:.72rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);margin-bottom:14px;
}
.eyebrow i{font-size:.8rem}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 28px;border-radius:999px;font-weight:600;font-size:.95rem;line-height:1.2;
  border:1px solid transparent;cursor:pointer;text-align:center;
  transition:transform .22s ease,box-shadow .3s ease,background .3s ease,border-color .3s ease,color .22s ease;
}
.btn i{font-size:.9em}
.btn-primary-glow{background:linear-gradient(135deg,#1d4ed8 0%,#2563eb 45%,#38bdf8 100%);color:#fff;box-shadow:0 0 28px rgba(56,189,248,.42)}
.btn-primary-glow:hover{transform:translateY(-3px);box-shadow:0 0 40px rgba(56,189,248,.68);color:#fff}
.btn-primary-glow:active{transform:translateY(0);box-shadow:0 0 18px rgba(56,189,248,.5)}
.btn-ghost{background:rgba(148,163,184,.08);border-color:rgba(148,163,184,.3);color:var(--text-soft);backdrop-filter:blur(10px)}
.btn-ghost:hover{background:rgba(56,189,248,.14);border-color:var(--line-strong);color:#fff;transform:translateY(-3px)}
.btn-sm{padding:11px 20px;font-size:.86rem}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ===== Header ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--header-h);
  display:flex;align-items:center;
  background:rgba(3,7,18,.78);backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{background:rgba(3,7,18,.94);box-shadow:0 14px 40px rgba(2,6,23,.7)}
.nav-shell{display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,#1d4ed8,#22d3ee);color:#03121f;font-size:1rem;
  box-shadow:var(--glow-soft);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:.95rem;font-weight:700;letter-spacing:-.01em}
.brand-text small{font-size:.7rem;color:var(--brand-2);letter-spacing:.06em;text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;padding:9px 14px;border-radius:999px;font-size:.9rem;font-weight:500;
  color:var(--muted);transition:color .22s ease,background .22s ease;
}
.nav-link:hover{color:#fff;background:rgba(56,189,248,.1)}
.nav-link.active{color:#fff;background:rgba(56,189,248,.14);box-shadow:inset 0 0 0 1px rgba(56,189,248,.3)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:rgba(148,163,184,.1);border:1px solid var(--line);
  color:var(--text-soft);font-size:1rem;cursor:pointer;transition:background .22s ease,color .22s ease;
}
.nav-toggle:hover{background:rgba(56,189,248,.16);color:#fff}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;padding:0}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(3,7,18,.97) 0%,rgba(3,9,26,.9) 44%,rgba(4,10,28,.66) 74%,rgba(3,7,18,.94) 100%);
}
.hero-inner{position:relative;z-index:2;padding:92px 0 84px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:52px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;padding:8px 16px;border-radius:999px;
  background:rgba(56,189,248,.12);border:1px solid rgba(56,189,248,.34);
  color:#a5f3fc;font-size:.74rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;
  margin-bottom:22px;
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 12px var(--lime);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.55;transform:scale(.86)}}
.hero h1{margin-bottom:20px;text-shadow:0 10px 44px rgba(2,6,23,.85)}
.hero h1 .hl{
  background:linear-gradient(120deg,#38bdf8,#a3e635);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:1.06rem;color:var(--text-soft);max-width:640px;margin-bottom:26px}
.hero-checks{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.check-chip{
  display:inline-flex;align-items:center;gap:9px;padding:9px 15px;border-radius:999px;
  background:rgba(8,18,41,.72);border:1px solid var(--line);font-size:.85rem;color:var(--text-soft);
}
.check-chip i{color:var(--lime);font-size:.82rem}
.trust-line{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;font-size:.82rem;color:var(--muted)}
.trust-line span{display:inline-flex;align-items:center;gap:8px}
.trust-line i{color:var(--brand-2)}

.panel{
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-xl);
  padding:28px;backdrop-filter:blur(16px);box-shadow:var(--shadow);
}
.panel-title{font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:18px;font-weight:700}
.rule-list li{
  display:flex;gap:13px;padding:13px 0;border-bottom:1px dashed rgba(148,163,184,.2);
  font-size:.93rem;color:var(--text-soft);
}
.rule-list li:last-child{border-bottom:0;padding-bottom:0}
.rule-list i{color:var(--brand-2);margin-top:4px;font-size:.85rem}
.rule-list strong{color:#fff;display:block;font-size:.95rem;margin-bottom:2px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
.hero-stats div{
  background:rgba(3,7,18,.6);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px 12px;text-align:center;
}
.hero-stats b{display:block;font-size:1.25rem;color:#fff;font-weight:800}
.hero-stats span{font-size:.72rem;color:var(--muted);letter-spacing:.04em}

/* ===== Cards / grids ===== */
.grid{display:grid;gap:22px}
.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))}

.card{
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;backdrop-filter:blur(14px);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.card:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:0 20px 46px rgba(2,6,23,.6),var(--glow-soft)}
.card p{color:var(--muted);font-size:.94rem;margin-bottom:0}
.card p + p{margin-top:10px}
.card-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(135deg,rgba(37,99,235,.32),rgba(34,211,238,.2));
  border:1px solid var(--line-strong);color:var(--brand-2);font-size:1.05rem;
}
.tag{
  display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border-radius:999px;
  font-size:.7rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;
  background:rgba(56,189,248,.13);border:1px solid rgba(56,189,248,.3);color:#a5f3fc;
}
.tag-lime{background:rgba(163,230,53,.12);border-color:rgba(163,230,53,.32);color:#d9f99d}
.tag-danger{background:rgba(244,63,94,.13);border-color:rgba(244,63,94,.34);color:#fda4af}

.tier-card{position:relative;overflow:hidden}
.tier-index{
  font-size:2.4rem;font-weight:800;line-height:1;
  background:linear-gradient(140deg,#38bdf8,#a3e635);
  -webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:8px;
}
.tier-card h3{margin-bottom:10px}
.spec-list{margin-top:16px;border-top:1px solid var(--line);padding-top:14px}
.spec-list li{display:flex;justify-content:space-between;gap:12px;font-size:.87rem;padding:7px 0;color:var(--muted)}
.spec-list li b{color:#fff;font-weight:600}

/* ===== Steps ===== */
.split{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:48px;align-items:center}
.media-frame{
  border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);position:relative;
}
.media-frame img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.media-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(3,7,18,.05),rgba(3,7,18,.6));
}
.steps{counter-reset:step}
.step{
  display:flex;gap:20px;padding:22px 0;border-bottom:1px solid var(--line);
}
.step:last-child{border-bottom:0}
.step-num{
  flex:0 0 46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:rgba(37,99,235,.2);border:1px solid var(--line-strong);
  color:#fff;font-weight:800;font-size:1rem;
}
.step h3{margin-bottom:6px;font-size:1.05rem}
.step p{color:var(--muted);font-size:.93rem;margin:0}

/* ===== Situations ===== */
.two-col{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
.list-block{
  background:var(--bg-panel-2);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;backdrop-filter:blur(14px);
}
.list-block h3{display:flex;align-items:center;gap:11px;margin-bottom:16px;font-size:1.06rem}
.list-block h3 i{color:var(--brand-2)}
.plain-list li{
  position:relative;padding:12px 0 12px 26px;font-size:.93rem;color:var(--text-soft);
  border-bottom:1px dashed rgba(148,163,184,.18);
}
.plain-list li:last-child{border-bottom:0;padding-bottom:0}
.plain-list li::before{
  content:"";position:absolute;left:2px;top:20px;width:9px;height:9px;border-radius:3px;
  background:linear-gradient(135deg,#38bdf8,#22d3ee);
}
.plain-list.warn li::before{background:linear-gradient(135deg,#f43f5e,#f97316)}
.plain-list li b{color:#fff;font-weight:600}

/* ===== Data rows ===== */
.data-wrap{
  border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  background:rgba(8,18,41,.6);backdrop-filter:blur(12px);
}
.data-row{
  display:grid;grid-template-columns:1.1fr 1fr 1fr 1fr 1.2fr;
  gap:14px;padding:16px 22px;border-bottom:1px solid var(--line);font-size:.9rem;
  transition:background .22s ease;
}
.data-row:last-child{border-bottom:0}
.data-row:hover{background:rgba(56,189,248,.06)}
.data-head{
  background:rgba(37,99,235,.16);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;
  color:#bfdbfe;font-weight:700;
}
.data-row span{color:var(--muted)}
.data-row b{color:#fff;font-weight:600}
.data-row .up{color:var(--lime);font-weight:700}
.data-row .down{color:#fda4af;font-weight:700}
.data-note{font-size:.83rem;color:var(--muted);margin-top:16px}

/* ===== Payout ===== */
.pay-badges{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0}
.pay-badge{
  display:inline-flex;align-items:center;gap:9px;padding:11px 18px;border-radius:var(--radius);
  background:rgba(3,7,18,.7);border:1px solid var(--line);font-size:.88rem;font-weight:600;
  color:var(--text-soft);transition:border-color .24s ease,transform .24s ease,color .24s ease;
}
.pay-badge:hover{border-color:var(--line-strong);color:#fff;transform:translateY(-3px)}
.pay-badge i{color:var(--brand-2)}
.trust-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:26px}
.trust-item{
  display:flex;gap:14px;padding:18px;border-radius:var(--radius);
  background:rgba(8,18,41,.7);border:1px solid var(--line);
}
.trust-item i{color:var(--accent);font-size:1.05rem;margin-top:3px}
.trust-item strong{display:block;font-size:.94rem;color:#fff;margin-bottom:6px}
.trust-item p{font-size:.86rem;color:var(--muted);margin:0}

/* ===== Testimonials ===== */
.quote-card{display:flex;flex-direction:column;gap:16px}
.quote-text{font-size:.97rem;color:var(--text-soft);margin:0}
.quote-person{display:flex;align-items:center;gap:12px;margin-top:auto}
.avatar{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(135deg,#1d4ed8,#22d3ee);color:#04121f;font-weight:800;font-size:.95rem;
}
.quote-person strong{display:block;font-size:.92rem;color:#fff}
.quote-person span{font-size:.78rem;color:var(--muted)}
.stars{color:#fbbf24;font-size:.8rem;letter-spacing:2px}

/* ===== Posts ===== */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.post-card{
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.post-card:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:0 20px 46px rgba(2,6,23,.6)}
.post-card a{display:block;padding:24px;height:100%}
.post-card h3{font-size:1.02rem;margin:12px 0 8px}
.post-card p{font-size:.9rem;color:var(--muted);margin-bottom:14px}
.post-meta{font-size:.78rem;color:var(--brand-2);letter-spacing:.04em}
.empty-note{
  grid-column:1/-1;padding:26px;border-radius:var(--radius-lg);
  background:rgba(8,18,41,.6);border:1px dashed var(--line);color:var(--muted);font-size:.92rem;
}
.list-more{margin-top:30px;display:flex;justify-content:flex-start}

/* ===== FAQ ===== */
.faq-wrap{display:grid;gap:14px;max-width:920px}
.faq-item{
  background:rgba(8,18,41,.62);border:1px solid var(--line);border-radius:var(--radius);
  padding:0;overflow:hidden;transition:border-color .24s ease,background .24s ease;
}
.faq-item[open]{border-color:var(--line-strong);background:rgba(11,22,48,.78)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 22px;display:flex;align-items:center;gap:16px;
  font-weight:600;font-size:1rem;color:#fff;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;margin-left:auto;
  font-size:.78rem;color:var(--brand-2);transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-body{padding:0 22px 22px;color:var(--muted);font-size:.94rem}
.faq-item .faq-body p:last-child{margin-bottom:0}

/* ===== CTA band ===== */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-xl);
  border:1px solid var(--line-strong);padding:52px 40px;text-align:center;
  background:
    radial-gradient(600px 320px at 15% 0%,rgba(37,99,235,.35),transparent 68%),
    radial-gradient(560px 300px at 88% 100%,rgba(34,211,238,.22),transparent 66%),
    rgba(8,18,41,.82);
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:clamp(1.4rem,2.7vw,2rem);margin-bottom:14px}
.cta-band p{color:var(--text-soft);max-width:720px;margin:0 auto 26px}
.cta-band .btn-row{justify-content:center}

/* ===== Footer ===== */
.site-footer{
  margin-top:20px;padding:70px 0 30px;
  background:linear-gradient(180deg,rgba(3,7,18,.4),rgba(3,7,18,.96));
  border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.footer-about p{font-size:.88rem;color:var(--muted);line-height:1.7}
.footer-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.f-badge{
  font-size:.72rem;font-weight:600;letter-spacing:.06em;padding:6px 12px;border-radius:999px;
  background:rgba(56,189,248,.1);border:1px solid rgba(56,189,248,.26);color:#bae6fd;
}
.footer-col h4{font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:16px}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a,.footer-col ul span{font-size:.88rem;color:var(--muted);transition:color .22s ease}
.footer-col ul a:hover{color:#fff}
.footer-note{font-size:.82rem;color:var(--muted);margin-top:14px}
.footer-note a{color:var(--brand-2)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
}
.footer-bottom p{font-size:.8rem;color:var(--muted);margin:0}
.footer-bottom .disclaimer{max-width:560px}

/* ===== FAB ===== */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:50;
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 20px;border-radius:999px;
  background:rgba(7,7,13,.78);backdrop-filter:blur(14px);
  border:1px solid transparent;
  background-image:linear-gradient(rgba(7,7,13,.82),rgba(7,7,13,.82)),
                   linear-gradient(120deg,#22d3ee,#a3e635);
  background-origin:border-box;background-clip:padding-box,border-box;
  color:#e2e8f0;font-size:.85rem;font-weight:600;
  box-shadow:0 0 22px rgba(6,182,212,.45);
  animation:fabBreath 3.6s ease-in-out infinite;
  transition:transform .25s ease,box-shadow .3s ease,opacity .25s ease,color .25s ease;
  opacity:.82;
}
.fab i{color:var(--accent);font-size:1rem;animation:fabFlicker 2.4s infinite}
.fab:hover{opacity:1;transform:translateY(-3px) scale(1.04);box-shadow:0 0 34px rgba(34,211,238,.7);color:#fff}
.fab:active{transform:translateY(0) scale(.97)}
.fab .fab-dot{
  position:absolute;top:-3px;right:-3px;width:12px;height:12px;border-radius:50%;
  background:#f43f5e;box-shadow:0 0 12px rgba(244,63,94,.9);animation:pulse 1.6s infinite;
}
@keyframes fabBreath{0%,100%{box-shadow:0 0 18px rgba(6,182,212,.35)}50%{box-shadow:0 0 30px rgba(163,230,53,.5)}}
@keyframes fabFlicker{0%,92%,100%{opacity:1}94%{opacity:.4}96%{opacity:1}}

/* ===== Responsive ===== */
@media (max-width:1080px){
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .split{grid-template-columns:1fr;gap:34px}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .data-row{grid-template-columns:1fr 1fr 1fr;row-gap:8px}
  .data-row .cell-wide{grid-column:1/-1}
}
@media (max-width:992px){
  .nav-toggle{display:inline-grid;place-items:center}
  .main-nav{
    position:fixed;top:var(--header-h);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    padding:18px 22px 24px;margin:0;
    background:rgba(3,7,18,.98);border-bottom:1px solid var(--line);
    box-shadow:0 24px 50px rgba(2,6,23,.8);
    transform:translateY(-14px);opacity:0;pointer-events:none;
    transition:opacity .24s ease,transform .24s ease;
  }
  .main-nav.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-link{padding:13px 16px;font-size:.95rem}
  .nav-actions .btn{padding:10px 16px;font-size:.8rem}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .hero-inner{padding:70px 0 60px}
  .grid-2,.grid-3,.two-col,.trust-grid,.post-grid{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(3,1fr)}
  .cta-band{padding:38px 22px}
  .step{gap:14px}
  .step-num{flex:0 0 40px;height:40px;font-size:.9rem}
  .data-row{grid-template-columns:1fr 1fr;padding:14px 16px;font-size:.85rem}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .shell{padding:0 16px}
  .brand-text strong{font-size:.86rem}
  .brand-text small{font-size:.64rem}
  .nav-actions .btn{display:none}
  .hero-checks{gap:8px}
  .check-chip{font-size:.8rem;padding:8px 12px}
  .hero-stats{grid-template-columns:1fr;gap:10px}
  .hero-stats div{display:flex;align-items:center;justify-content:space-between;text-align:left;padding:12px 16px}
  .hero-stats b{font-size:1.1rem}
  .data-row{grid-template-columns:1fr}
  .card,.panel,.list-block{padding:20px}
  .fab{left:12px;bottom:88px;padding:11px 16px;font-size:.78rem}
  .footer-grid{grid-template-columns:1fr}
}

/* 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}