/* roulang page: index */
:root{
  --jade:#0A2E1C;
  --jade-light:#0F3D26;
  --jade-dark:#062315;
  --gold:#FFD700;
  --gold-light:#FFE55C;
  --gold-dark:#C5A059;
  --luckyred:#D32F2F;
  --luckyred-dark:#B71C1C;
  --mint:#D1F2EB;
  --mint-pale:#E8FBF6;
  --white:#FFFFFF;
  --silver:#A6ACAF;
  --shadow-golden:0 4px 20px rgba(255,215,0,0.3);
  --shadow-golden-lg:0 8px 32px rgba(255,215,0,0.45);
  --shadow-card:0 12px 28px rgba(0,0,0,0.4);
  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:22px;
  --radius-xl:28px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Be Vietnam Pro','Roboto',system-ui,-apple-system,sans-serif;
  background:var(--jade-dark);
  color:var(--white);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:color .25s ease,opacity .25s ease}
button{font-family:inherit;cursor:pointer;border:none;background:none;transition:transform .25s ease,box-shadow .25s ease,background .25s ease}
button:focus-visible,a:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:var(--radius-sm)}
.container{max-width:1200px;margin:0 auto;padding:0 1.25rem}
@media(min-width:768px){.container{padding:0 2rem}}
@media(min-width:1024px){.container{padding:0 3rem}}

/* Navigation */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(10,46,28,0.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,215,0,0.18);
  box-shadow:0 2px 18px rgba(0,0,0,0.35);
  transition:all .3s ease;
}
.site-header.scrolled{background:rgba(6,35,21,0.97);box-shadow:0 4px 24px rgba(0,0,0,0.5)}
.nav-wrapper{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:0.85rem 0}
.logo-link{display:flex;align-items:center;gap:0.5rem;flex-shrink:0}
.logo-icon{width:38px;height:38px;background:linear-gradient(135deg,var(--gold),var(--gold-dark));border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--jade-dark);font-weight:900;font-size:1.15rem;box-shadow:var(--shadow-golden)}
.logo-text{font-size:1.05rem;font-weight:800;color:var(--gold-light);letter-spacing:-0.02em;white-space:nowrap}
.logo-text span{color:var(--white);font-weight:500}
.nav-links{display:none;align-items:center;gap:0.25rem;flex-wrap:wrap}
.nav-links a{padding:0.5rem 0.9rem;border-radius:99px;font-size:0.9rem;font-weight:600;color:var(--mint);transition:all .25s ease;white-space:nowrap}
.nav-links a:hover{color:var(--gold-light);background:rgba(255,215,0,0.1)}
.nav-links a.active{color:var(--jade-dark);background:var(--gold);box-shadow:var(--shadow-golden)}
.nav-actions{display:flex;align-items:center;gap:0.5rem;flex-shrink:0}
.btn-login{padding:0.45rem 0.8rem;font-size:0.85rem;font-weight:700;color:var(--gold-light);border-radius:99px;border:1px solid rgba(255,215,0,0.4);transition:all .25s ease;background:transparent}
.btn-login:hover{background:rgba(255,215,0,0.12);border-color:var(--gold)}
.btn-signup{padding:0.45rem 1rem;font-size:0.85rem;font-weight:800;color:var(--jade-dark);background:linear-gradient(135deg,var(--gold),var(--gold-light));border-radius:99px;box-shadow:var(--shadow-golden);transition:all .25s ease}
.btn-signup:hover{transform:translateY(-1px);box-shadow:var(--shadow-golden-lg)}
.mobile-burger{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius-sm);color:var(--gold-light);font-size:1.3rem;background:rgba(255,215,0,0.1);border:1px solid rgba(255,215,0,0.25)}
.mobile-menu{display:none;padding:0.5rem 0 1rem;border-top:1px solid rgba(255,215,0,0.15)}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:0.7rem 0.5rem;font-size:0.95rem;font-weight:600;color:var(--mint);border-radius:var(--radius-sm);transition:all .25s ease}
.mobile-menu a:hover{color:var(--gold-light);background:rgba(255,215,0,0.08)}
.mobile-menu a.active{color:var(--gold-light);background:rgba(255,215,0,0.15)}
@media(min-width:1024px){
  .nav-links{display:flex}
  .mobile-burger{display:none}
  .mobile-menu{display:none!important}
}
@media(max-width:1023px){
  .nav-links{display:none}
  .mobile-burger{display:flex}
}

/* Hero */
.hero-section{
  padding:7rem 0 3.5rem;
  background:linear-gradient(160deg,#0F3D26 0%,#0A2E1C 35%,#062315 100%);
  position:relative;
  overflow:hidden;
}
.hero-section::before{
  content:'';position:absolute;top:-20%;right:-8%;width:520px;height:520px;
  background:radial-gradient(circle,rgba(255,215,0,0.13) 0%,transparent 62%);
  border-radius:50%;pointer-events:none;
}
.hero-section::after{
  content:'';position:absolute;bottom:-10%;left:-10%;width:420px;height:420px;
  background:radial-gradient(circle,rgba(211,47,47,0.1) 0%,transparent 55%);
  border-radius:50%;pointer-events:none;
}
.hero-content{position:relative;z-index:2}
.hero-badge{display:inline-flex;align-items:center;gap:0.4rem;padding:0.35rem 0.85rem;font-size:0.75rem;font-weight:700;color:var(--gold-light);background:rgba(255,215,0,0.12);border:1px solid rgba(255,215,0,0.3);border-radius:99px;letter-spacing:0.03em;text-transform:uppercase}
.hero-badge i{color:var(--gold);font-size:0.7rem}
.hero-title{font-size:2.1rem;font-weight:900;line-height:1.15;color:var(--white);margin-top:1rem;letter-spacing:-0.02em}
.hero-title .hl-gold{color:var(--gold-light);position:relative;display:inline-block}
.hero-title .hl-gold::after{content:'';position:absolute;left:0;bottom:2px;width:100%;height:6px;background:rgba(255,215,0,0.25);border-radius:3px;z-index:-1}
.hero-desc{font-size:1rem;color:var(--mint);margin-top:1rem;max-width:640px;line-height:1.7}
.hero-icon-matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:0.7rem;margin-top:1.5rem;max-width:540px}
@media(min-width:480px){.hero-icon-matrix{grid-template-columns:repeat(4,1fr)}}
@media(min-width:768px){.hero-title{font-size:2.7rem}.hero-icon-matrix{grid-template-columns:repeat(4,1fr)}}
@media(min-width:1024px){.hero-title{font-size:3.1rem}}
.icon-tile{display:flex;align-items:center;gap:0.5rem;padding:0.65rem 0.8rem;background:rgba(255,255,255,0.05);border:1px solid rgba(255,215,0,0.15);border-radius:var(--radius-md);transition:all .3s ease;cursor:default}
.icon-tile:hover{background:rgba(255,215,0,0.1);border-color:rgba(255,215,0,0.4);transform:translateY(-2px)}
.icon-tile i{font-size:1.2rem;color:var(--gold-light);flex-shrink:0}
.icon-tile span{font-size:0.75rem;font-weight:600;color:var(--mint);line-height:1.25}
.hero-status-bar{display:flex;flex-wrap:wrap;gap:0.6rem;margin-top:1.3rem}
.status-chip{display:inline-flex;align-items:center;gap:0.4rem;padding:0.4rem 0.8rem;font-size:0.72rem;font-weight:600;border-radius:99px;background:rgba(255,255,255,0.06);border:1px solid rgba(255,215,0,0.2);color:var(--mint)}
.status-chip .dot{width:7px;height:7px;border-radius:50%;flex-shrink:0;animation:pulse-dot 1.8s ease-in-out infinite}
.status-chip .dot.green{background:#32CD32;box-shadow:0 0 8px #32CD32}
.status-chip .dot.gold{background:var(--gold);box-shadow:0 0 8px var(--gold)}
.status-chip .dot.red{background:var(--luckyred);box-shadow:0 0 8px var(--luckyred)}
@keyframes pulse-dot{0%,100%{opacity:1}50%{opacity:.35}}
.hero-cta-group{display:flex;flex-wrap:wrap;gap:0.7rem;margin-top:1.6rem}
.btn-hero-primary{display:inline-flex;align-items:center;gap:0.5rem;padding:0.8rem 1.6rem;font-size:0.95rem;font-weight:800;color:var(--jade-dark);background:linear-gradient(135deg,var(--gold),var(--gold-light));border-radius:99px;box-shadow:var(--shadow-golden);transition:all .3s ease}
.btn-hero-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-golden-lg)}
.btn-hero-secondary{display:inline-flex;align-items:center;gap:0.5rem;padding:0.8rem 1.4rem;font-size:0.9rem;font-weight:700;color:var(--gold-light);background:transparent;border:1px solid rgba(255,215,0,0.5);border-radius:99px;transition:all .3s ease}
.btn-hero-secondary:hover{background:rgba(255,215,0,0.12)}
.hero-meta-row{display:flex;flex-wrap:wrap;gap:1.2rem;margin-top:1.8rem}
.hero-meta-item{display:flex;align-items:center;gap:0.45rem;font-size:0.85rem;color:var(--silver)}
.hero-meta-item i{color:var(--gold);font-size:0.9rem}
.hero-meta-item strong{color:var(--white);font-weight:800}

/* Section common */
.section-block{padding:3.5rem 0}
@media(min-width:768px){.section-block{padding:4.5rem 0}}
.section-label{display:inline-block;font-size:0.72rem;font-weight:800;text-transform:uppercase;letter-spacing:0.08em;color:var(--gold-light);padding:0.3rem 0.75rem;background:rgba(255,215,0,0.1);border:1px solid rgba(255,215,0,0.25);border-radius:99px;margin-bottom:0.7rem}
.section-title{font-size:1.55rem;font-weight:900;color:var(--white);line-height:1.25;letter-spacing:-0.01em}
@media(min-width:768px){.section-title{font-size:2rem}}
.section-desc{font-size:0.95rem;color:var(--silver);margin-top:0.7rem;line-height:1.7;max-width:680px}
.text-gold{color:var(--gold-light)}
.bg-jade-card{background:rgba(255,255,255,0.04);border:1px solid rgba(255,215,0,0.12);border-radius:var(--radius-lg);padding:1.5rem;transition:all .3s ease}
.bg-jade-card:hover{border-color:rgba(255,215,0,0.35);background:rgba(255,215,0,0.07);transform:translateY(-3px)}
.divider-gold{height:1px;background:linear-gradient(90deg,transparent,rgba(255,215,0,0.4),transparent);border:none;margin:2.5rem 0}

/* Step list */
.step-list{display:grid;grid-template-columns:1fr;gap:0.85rem;margin-top:1.5rem}
@media(min-width:640px){.step-list{grid-template-columns:repeat(3,1fr)}}
.step-item{position:relative;background:rgba(255,255,255,0.04);border:1px solid rgba(255,215,0,0.15);border-radius:var(--radius-lg);padding:1.3rem;transition:all .3s ease}
.step-item:hover{border-color:var(--gold);box-shadow:var(--shadow-golden);transform:translateY(-3px)}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;font-weight:900;font-size:0.95rem;background:linear-gradient(135deg,var(--gold),var(--gold-dark));color:var(--jade-dark);flex-shrink:0;margin-bottom:0.7rem}
.step-title{font-size:1rem;font-weight:800;color:var(--white);margin-bottom:0.35rem}
.step-desc{font-size:0.84rem;color:var(--silver);line-height:1.6}

/* Game cards */
.game-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:0.9rem;margin-top:1.6rem}
@media(min-width:640px){.game-grid{grid-template-columns:repeat(auto-fill,minmax(190px,1fr))}}
@media(min-width:1024px){.game-grid{grid-template-columns:repeat(4,1fr)}}
.game-card{position:relative;border-radius:var(--radius-md);overflow:hidden;border:1px solid rgba(255,215,0,0.3);background:linear-gradient(160deg,#123E25,#0A2E1C);transition:all .35s ease;cursor:pointer}
.game-card:hover{border-color:var(--gold);box-shadow:0 0 22px rgba(255,215,0,0.35);transform:translateY(-5px)}
.game-card:hover .game-overlay{opacity:0.9}
.game-cover{height:130px;background-size:cover;background-position:center;position:relative}
.game-cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.game-tag-badge{position:absolute;top:8px;left:8px;z-index:3;font-size:0.6rem;font-weight:800;text-transform:uppercase;letter-spacing:0.04em;padding:0.2rem 0.5rem;border-radius:99px;background:var(--luckyred);color:var(--white);box-shadow:0 2px 8px rgba(211,47,47,0.5)}
.game-hot-badge{position:absolute;top:8px;right:8px;z-index:3;font-size:0.55rem;font-weight:700;text-transform:uppercase;letter-spacing:0.04em;padding:0.2rem 0.5rem;border-radius:99px;background:var(--gold);color:var(--jade-dark)}
.game-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 35%,rgba(6,35,21,0.92) 100%);opacity:0.7;transition:opacity .35s ease}
.game-info{position:relative;z-index:2;padding:0.8rem 0.85rem 1rem}
.game-name{font-size:0.88rem;font-weight:800;color:var(--white);line-height:1.3}
.game-provider{font-size:0.68rem;color:var(--gold-light);margin-top:0.25rem;font-weight:600}

/* Progress cards */
.progress-card{background:rgba(255,255,255,0.04);border:1px solid rgba(255,215,0,0.16);border-radius:var(--radius-lg);padding:1.5rem;transition:all .3s ease}
.progress-card:hover{border-color:rgba(255,215,0,0.4);box-shadow:var(--shadow-golden)}
.progress-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:0.85rem}
.progress-label{font-size:0.85rem;font-weight:800;color:var(--gold-light);text-transform:uppercase;letter-spacing:0.04em}
.progress-percent{font-size:0.8rem;font-weight:800;color:var(--white)}
.progress-bar{height:10px;background:rgba(255,255,255,0.08);border-radius:99px;overflow:hidden}
.progress-fill{height:100%;border-radius:99px;background:linear-gradient(90deg,var(--gold),var(--gold-light));transition:width .6s ease;box-shadow:0 0 12px rgba(255,215,0,0.4)}
.progress-detail{font-size:0.82rem;color:var(--silver);margin-top:0.55rem;line-height:1.55}
.progress-grid{display:grid;grid-template-columns:1fr;gap:0.9rem;margin-top:1.5rem}
@media(min-width:640px){.progress-grid{grid-template-columns:repeat(2,1fr)}} 
@media(min-width:1024px){.progress-grid{grid-template-columns:repeat(3,1fr)}}

/* FAQ */
.faq-list{margin-top:1.5rem;display:flex;flex-direction:column;gap:0.7rem}
.faq-item{background:rgba(255,255,255,0.04);border:1px solid rgba(255,215,0,0.14);border-radius:var(--radius-md);overflow:hidden;transition:all .3s ease}
.faq-item:hover{border-color:rgba(255,215,0,0.35)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1.05rem 1.3rem;cursor:pointer;list-style:none;font-weight:700;color:var(--white);font-size:0.95rem}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--gold-light);font-size:0.9rem;transition:transform .3s ease;flex-shrink:0}
.faq-item[open] summary i{transform:rotate(180deg)}
.faq-item[open] summary{color:var(--gold-light)}
.faq-answer{padding:0 1.3rem 1.1rem;font-size:0.88rem;color:var(--silver);line-height:1.7}

/* Error list */
.error-list{margin-top:1.4rem;display:grid;grid-template-columns:1fr;gap:0.7rem}
@media(min-width:640px){.error-list{grid-template-columns:repeat(3,1fr)}}
.error-item{display:flex;gap:0.7rem;padding:1rem;background:rgba(211,47,47,0.08);border:1px solid rgba(211,47,47,0.3);border-radius:var(--radius-md);transition:all .3s ease}
.error-item:hover{border-color:var(--luckyred);background:rgba(211,47,47,0.15)}
.error-item i{color:var(--luckyred);font-size:1.1rem;flex-shrink:0;margin-top:0.1rem}
.error-item h4{font-size:0.88rem;font-weight:800;color:var(--white);margin-bottom:0.25rem}
.error-item p{font-size:0.8rem;color:var(--silver);line-height:1.55}

/* Social proof */
.social-proof-row{display:grid;grid-template-columns:repeat(2,1fr);gap:0.9rem;margin-top:1.5rem}
@media(min-width:640px){.social-proof-row{grid-template-columns:repeat(4,1fr)}}
.social-proof-item{text-align:left;padding:1.2rem;background:rgba(255,215,0,0.06);border:1px solid rgba(255,215,0,0.18);border-radius:var(--radius-lg);transition:all .3s ease}
.social-proof-item:hover{border-color:var(--gold);transform:translateY(-3px)}
.social-proof-num{font-size:1.6rem;font-weight:900;color:var(--gold-light);line-height:1}
.social-proof-label{font-size:0.78rem;color:var(--silver);margin-top:0.4rem;line-height:1.4}

/* Guarantee bar */
.guarantee-bar{display:flex;flex-wrap:wrap;gap:0.9rem;margin-top:1.4rem}
.guarantee-chip{display:flex;align-items:center;gap:0.5rem;padding:0.55rem 0.9rem;font-size:0.78rem;font-weight:600;color:var(--mint);background:rgba(255,255,255,0.05);border:1px solid rgba(255,215,0,0.2);border-radius:99px}
.guarantee-chip i{color:var(--gold-light);font-size:0.85rem}

/* News list */
.news-layout{display:grid;grid-template-columns:1fr;gap:1.5rem;margin-top:1.6rem}
@media(min-width:768px){.news-layout{grid-template-columns:1.5fr 1fr;align-items:start}}
.news-list{display:flex;flex-direction:column;gap:0.7rem}
.news-item{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 1.2rem;background:rgba(255,255,255,0.04);border:1px solid rgba(255,215,0,0.14);border-radius:var(--radius-md);transition:all .3s ease}
.news-item:hover{border-color:rgba(255,215,0,0.4);background:rgba(255,215,0,0.07);transform:translateX(3px)}
.news-main{min-width:0}
.news-title{font-size:0.92rem;font-weight:700;color:var(--white);line-height:1.4;transition:color .25s ease}
.news-item:hover .news-title{color:var(--gold-light)}
.news-meta{display:flex;flex-wrap:wrap;gap:0.6rem;font-size:0.72rem;color:var(--silver);margin-top:0.3rem}
.news-cat{color:var(--gold-light);font-weight:700}
.news-arrow{flex-shrink:0;color:var(--gold-light);font-size:0.9rem;transition:transform .3s ease}
.news-item:hover .news-arrow{transform:translateX(5px)}
.news-side-panel{background:linear-gradient(160deg,#123E25,#0A2E1C);border:1px solid rgba(255,215,0,0.25);border-radius:var(--radius-lg);padding:1.5rem;position:relative;overflow:hidden}
.news-side-panel::before{content:'';position:absolute;top:-30%;right:-20%;width:240px;height:240px;background:radial-gradient(circle,rgba(255,215,0,0.15) 0%,transparent 60%);border-radius:50%;pointer-events:none}
.news-side-title{font-size:1rem;font-weight:800;color:var(--gold-light);margin-bottom:0.5rem}
.news-side-desc{font-size:0.85rem;color:var(--silver);line-height:1.65;position:relative;z-index:2}

/* CTA */
.cta-section{padding:4rem 0;background:linear-gradient(150deg,#0F3D26 0%,#062315 70%);position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;top:-40%;left:50%;transform:translateX(-50%);width:600px;height:500px;background:radial-gradient(circle,rgba(255,215,0,0.12) 0%,transparent 60%);border-radius:50%;pointer-events:none}
.cta-box{position:relative;z-index:2;text-align:left;background:rgba(0,0,0,0.35);border:1px solid rgba(255,215,0,0.3);border-radius:var(--radius-xl);padding:2rem}
@media(min-width:768px){.cta-box{padding:2.8rem}}
.cta-title{font-size:1.5rem;font-weight:900;color:var(--white);line-height:1.25}
@media(min-width:768px){.cta-title{font-size:2rem}}
.cta-desc{font-size:0.95rem;color:var(--silver);margin-top:0.7rem;max-width:580px;line-height:1.7}

/* Footer */
.site-footer{background:#052017;border-top:1px solid rgba(255,215,0,0.16);padding:3rem 0 1.2rem}
.footer-grid{display:grid;grid-template-columns:1fr;gap:2rem}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}}
.footer-brand .logo-link{margin-bottom:0.8rem}
.footer-desc{font-size:0.84rem;color:var(--silver);line-height:1.7;max-width:320px}
.footer-col-title{font-size:0.82rem;font-weight:800;text-transform:uppercase;letter-spacing:0.05em;color:var(--gold-light);margin-bottom:0.8rem}
.footer-col a{display:block;font-size:0.84rem;color:var(--silver);padding:0.25rem 0;transition:color .25s ease}
.footer-col a:hover{color:var(--gold-light)}
.footer-badge-row{display:flex;flex-wrap:wrap;gap:0.5rem;margin-top:1rem}
.footer-badge{display:inline-flex;align-items:center;gap:0.35rem;font-size:0.65rem;font-weight:700;color:var(--mint);background:rgba(255,215,0,0.08);border:1px solid rgba(255,215,0,0.2);border-radius:99px;padding:0.3rem 0.6rem}
.footer-badge i{color:var(--gold-light);font-size:0.7rem}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:0.7rem;margin-top:2rem;padding-top:1.2rem;border-top:1px solid rgba(255,215,0,0.12)}
.footer-copyright{font-size:0.76rem;color:var(--silver)}
.footer-links{display:flex;flex-wrap:wrap;gap:0.6rem}
.footer-links a{font-size:0.76rem;color:var(--silver);transition:color .25s ease}
.footer-links a:hover{color:var(--gold-light)}

/* FAB */
.fab-support{position:fixed;left:1rem;bottom:5.5rem;z-index:70;display:flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:50%;background:linear-gradient(145deg,#0A2E1C,#062315);border:2px solid var(--gold);box-shadow:0 4px 20px rgba(255,215,0,0.3);cursor:pointer;opacity:.72;transition:all .35s ease;animation:fab-float 2.8s ease-in-out infinite}
.fab-support:hover{opacity:1;transform:scale(1.1);box-shadow:0 6px 26px rgba(255,215,0,0.5)}
.fab-support:active{transform:scale(.95) translateY(1px)}
.fab-support i{font-size:1.4rem;color:var(--gold-light);transition:transform .4s ease}
.fab-support:hover i{transform:rotate(360deg)}
.fab-support .fab-dot{position:absolute;top:4px;right:4px;width:10px;height:10px;border-radius:50%;background:var(--luckyred);border:2px solid var(--jade);animation:pulse-dot 1.5s ease-in-out infinite}
@keyframes fab-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}

/* Responsive tweaks */
@media(max-width:360px){
  .hero-title{font-size:1.7rem}
  .logo-text{font-size:0.85rem}
  .btn-login,.btn-signup{padding:0.4rem 0.7rem;font-size:0.75rem}
  .cta-title{font-size:1.25rem}
  .game-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:479px){
  .hero-icon-matrix{grid-template-columns:repeat(2,1fr)}
  .error-list{grid-template-columns:1fr}
  .social-proof-row{grid-template-columns:repeat(2,1fr)}
}

/* roulang page: article */
:root {
            --color-jade: #0A2E1C;
            --color-forest: #123E25;
            --color-ember: #0B3C25;
            --color-gold: #FFD700;
            --color-luckyred: #D32F2F;
            --color-palemint: #D1F2EB;
            --color-white: #FFFFFF;
            --color-warmgray: #CCCCCC;
            --color-muted: #8FA99B;
            --color-border: rgba(255, 215, 0, 0.2);
            --color-shadow: rgba(10, 46, 28, 0.25);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 48px;
            --space-xl: 64px;
            --font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        
        body {
            font-family: var(--font-family);
            background: linear-gradient(180deg, #0A2E1C 0%, #0B3C25 40%, #062315 100%);
            color: var(--color-white);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        
        a:hover {
            opacity: 0.85;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }
        
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-gold);
            outline-offset: 2px;
        }
        
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        
        /* ===== HEADER & NAV ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(10, 46, 28, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.15);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
        }
        
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 14px 0;
        }
        
        .logo-link {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        
        .logo-icon {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: linear-gradient(135deg, #FFD700 0%, #D4AC0D 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0A2E1C;
            font-size: 22px;
            box-shadow: 0 0 18px rgba(255, 215, 0, 0.45);
            border: 2px solid rgba(255, 255, 255, 0.25);
            transition: var(--transition);
        }
        
        .logo-link:hover .logo-icon {
            transform: rotate(-8deg) scale(1.05);
            box-shadow: 0 0 28px rgba(255, 215, 0, 0.7);
        }
        
        .logo-text {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.3px;
            color: var(--color-white);
            line-height: 1.15;
            white-space: nowrap;
        }
        
        .logo-text span {
            color: var(--color-gold);
            display: block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1.2px;
            text-transform: uppercase;
            opacity: 0.9;
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.04);
            padding: 6px;
            border-radius: 999px;
            border: 1px solid rgba(255, 215, 0, 0.12);
        }
        
        .nav-links a {
            padding: 10px 20px;
            border-radius: 999px;
            font-size: 14.5px;
            font-weight: 600;
            letter-spacing: 0.2px;
            color: var(--color-palemint);
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }
        
        .nav-links a:hover {
            background: rgba(255, 215, 0, 0.12);
            color: var(--color-gold);
            opacity: 1;
        }
        
        .nav-links a.active {
            background: linear-gradient(135deg, #FFD700, #FFC300);
            color: #0A2E1C;
            box-shadow: 0 4px 16px rgba(255, 215, 0, 0.3);
        }
        
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        
        .btn-login {
            padding: 10px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 700;
            color: var(--color-palemint);
            border: 1px solid rgba(255, 215, 0, 0.3);
            background: transparent;
            transition: var(--transition);
            cursor: pointer;
        }
        
        .btn-login:hover {
            background: rgba(255, 215, 0, 0.1);
            border-color: var(--color-gold);
            color: var(--color-gold);
            opacity: 1;
        }
        
        .btn-signup {
            padding: 10px 22px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 700;
            color: #0A2E1C;
            background: linear-gradient(135deg, #FFD700, #FFB300);
            border: none;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.35);
            transition: var(--transition);
            cursor: pointer;
        }
        
        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 8px 28px rgba(255, 215, 0, 0.55);
            opacity: 1;
        }
        
        .mobile-toggle {
            display: none;
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid rgba(255, 215, 0, 0.25);
            color: var(--color-gold);
            width: 46px;
            height: 46px;
            border-radius: 12px;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .mobile-toggle:hover {
            background: rgba(255, 215, 0, 0.22);
        }
        
        /* ===== BREADCRUMB & ARTICLE HERO ===== */
        .article-hero-section {
            position: relative;
            padding: 64px 0 48px;
            background-image:
                radial-gradient(ellipse at top left, rgba(255, 215, 0, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at bottom right, rgba(18, 62, 37, 0.7) 0%, transparent 60%),
                url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            border-bottom: 1px solid rgba(255, 215, 0, 0.1);
        }
        
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13.5px;
            font-weight: 500;
            color: var(--color-muted);
            margin-bottom: 24px;
        }
        
        .breadcrumb a {
            color: var(--color-palemint);
            transition: var(--transition);
        }
        
        .breadcrumb a:hover {
            color: var(--color-gold);
            opacity: 1;
        }
        
        .breadcrumb .separator {
            color: var(--color-gold);
            opacity: 0.5;
            font-size: 12px;
        }
        
        .breadcrumb .current {
            color: var(--color-gold);
            font-weight: 600;
        }
        
        .article-hero-title {
            font-size: clamp(2rem, 4.5vw, 3.25rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.5px;
            color: var(--color-white);
            margin-bottom: 16px;
            max-width: 900px;
        }
        
        .article-meta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 28px;
            margin-top: 18px;
            padding-top: 18px;
            border-top: 1px solid rgba(255, 215, 0, 0.15);
        }
        
        .article-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-palemint);
        }
        
        .article-meta-item i {
            color: var(--color-gold);
            font-size: 15px;
        }
        
        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(255, 215, 0, 0.15);
            border: 1px solid rgba(255, 215, 0, 0.3);
            color: var(--color-gold);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.3px;
        }
        
        /* ===== ARTICLE MAIN CONTENT ===== */
        .article-main-section {
            padding: 56px 0 64px;
            background: rgba(255, 255, 255, 0.02);
        }
        
        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr);
            gap: 40px;
            max-width: 860px;
            margin: 0 auto;
        }
        
        .article-cover-wrapper {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
            border: 1px solid rgba(255, 215, 0, 0.2);
            margin-bottom: 32px;
        }
        
        .article-cover-wrapper img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: 0;
        }
        
        .article-body-content {
            font-size: 17px;
            line-height: 1.75;
            color: #E8F0EC;
        }
        
        .article-body-content h2 {
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--color-white);
            margin: 40px 0 16px;
            padding-left: 16px;
            border-left: 4px solid var(--color-gold);
            line-height: 1.3;
        }
        
        .article-body-content h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-palemint);
            margin: 32px 0 12px;
            line-height: 1.3;
        }
        
        .article-body-content p {
            margin-bottom: 18px;
            color: #D9E8E1;
        }
        
        .article-body-content ul,
        .article-body-content ol {
            margin: 0 0 20px 24px;
            color: #D9E8E1;
        }
        
        .article-body-content li {
            margin-bottom: 8px;
            position: relative;
        }
        
        .article-body-content ul li::marker {
            color: var(--color-gold);
        }
        
        .article-body-content ol li::marker {
            color: var(--color-gold);
            font-weight: 700;
        }
        
        .article-body-content a {
            color: var(--color-gold);
            text-decoration: underline;
            text-underline-offset: 3px;
            font-weight: 600;
        }
        
        .article-body-content a:hover {
            opacity: 0.75;
        }
        
        .article-body-content blockquote {
            margin: 24px 0;
            padding: 20px 24px;
            background: rgba(255, 215, 0, 0.06);
            border-left: 4px solid var(--color-gold);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-style: italic;
            color: var(--color-palemint);
        }
        
        .article-body-content img {
            margin: 24px 0;
            border-radius: var(--radius-md);
        }
        
        .article-body-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid rgba(255, 215, 0, 0.2);
        }
        
        .article-body-content th {
            background: rgba(255, 215, 0, 0.12);
            color: var(--color-gold);
            font-weight: 700;
            padding: 12px 16px;
            text-align: left;
            font-size: 14px;
        }
        
        .article-body-content td {
            padding: 12px 16px;
            border-top: 1px solid rgba(255, 215, 0, 0.1);
            color: #D9E8E1;
            font-size: 14.5px;
        }
        
        /* ===== ARTICLE NOT FOUND ===== */
        .article-not-found {
            text-align: center;
            padding: 80px 24px;
            max-width: 600px;
            margin: 0 auto;
        }
        
        .article-not-found .not-found-icon {
            font-size: 64px;
            color: var(--color-gold);
            margin-bottom: 24px;
            opacity: 0.6;
        }
        
        .article-not-found h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 12px;
        }
        
        .article-not-found p {
            color: var(--color-palemint);
            margin-bottom: 28px;
            font-size: 16px;
        }
        
        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 999px;
            background: linear-gradient(135deg, #FFD700, #FFB300);
            color: #0A2E1C;
            font-weight: 700;
            font-size: 15px;
            transition: var(--transition);
            box-shadow: 0 6px 22px rgba(255, 215, 0, 0.35);
        }
        
        .btn-back-home:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(255, 215, 0, 0.55);
            opacity: 1;
        }
        
        /* ===== QUICK TIPS SECTION ===== */
        .quick-tips-section {
            padding: 56px 0;
            background: rgba(11, 60, 37, 0.5);
            border-top: 1px solid rgba(255, 215, 0, 0.08);
            border-bottom: 1px solid rgba(255, 215, 0, 0.08);
        }
        
        .section-header {
            margin-bottom: 36px;
            max-width: 680px;
        }
        
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid rgba(255, 215, 0, 0.25);
            color: var(--color-gold);
            font-size: 12.5px;
            font-weight: 700;
            letter-spacing: 0.8px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            line-height: 1.25;
            color: var(--color-white);
            letter-spacing: -0.3px;
        }
        
        .section-subtitle {
            font-size: 16px;
            color: var(--color-palemint);
            margin-top: 10px;
            line-height: 1.6;
        }
        
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 10px;
        }
        
        .tip-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 215, 0, 0.18);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            transition: var(--transition);
            position: relative;
        }
        
        .tip-item:hover {
            border-color: rgba(255, 215, 0, 0.4);
            background: rgba(255, 215, 0, 0.05);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }
        
        .tip-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.2), rgba(255, 215, 0, 0.08));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-gold);
            font-size: 18px;
            margin-bottom: 14px;
            border: 1px solid rgba(255, 215, 0, 0.3);
        }
        
        .tip-item h3 {
            font-size: 15.5px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 8px;
            line-height: 1.3;
        }
        
        .tip-item p {
            font-size: 13.5px;
            color: var(--color-palemint);
            line-height: 1.55;
        }
        
        /* ===== FAQ SECTION ===== */
        .faq-section {
            padding: 56px 0;
            background: rgba(255, 255, 255, 0.02);
        }
        
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 860px;
            margin: 0 auto;
        }
        
        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 215, 0, 0.15);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        
        .faq-item:hover {
            border-color: rgba(255, 215, 0, 0.35);
        }
        
        .faq-item summary {
            list-style: none;
            cursor: pointer;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-weight: 700;
            font-size: 16px;
            color: var(--color-white);
            user-select: none;
            transition: var(--transition);
        }
        
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        
        .faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: rgba(255, 215, 0, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-gold);
            font-size: 13px;
            transition: transform 0.3s ease;
        }
        
        .faq-item[open] summary .faq-icon {
            transform: rotate(180deg);
        }
        
        .faq-item summary:hover {
            color: var(--color-gold);
        }
        
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: #D9E8E1;
            line-height: 1.65;
        }
        
        /* ===== CTA SECTION ===== */
        .cta-section {
            padding: 64px 0;
            background-image:
                radial-gradient(ellipse at center, rgba(255, 215, 0, 0.1) 0%, transparent 55%),
                linear-gradient(180deg, #0A2E1C 0%, #0B3C25 100%);
            border-top: 1px solid rgba(255, 215, 0, 0.15);
        }
        
        .cta-card {
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.12) 0%, rgba(255, 215, 0, 0.03) 100%);
            border: 1px solid rgba(255, 215, 0, 0.3);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 20px;
            max-width: 800px;
            margin: 0 auto;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
        }
        
        .cta-card h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            color: var(--color-white);
            line-height: 1.25;
        }
        
        .cta-card p {
            font-size: 16px;
            color: var(--color-palemint);
            max-width: 560px;
            line-height: 1.65;
        }
        
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
            margin-top: 8px;
        }
        
        .btn-cta-primary {
            padding: 14px 32px;
            border-radius: 999px;
            background: linear-gradient(135deg, #FFD700, #FFB300);
            color: #0A2E1C;
            font-weight: 700;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 6px 22px rgba(255, 215, 0, 0.35);
        }
        
        .btn-cta-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(255, 215, 0, 0.55);
            opacity: 1;
        }
        
        .btn-cta-secondary {
            padding: 14px 28px;
            border-radius: 999px;
            background: transparent;
            color: var(--color-gold);
            font-weight: 700;
            font-size: 15px;
            border: 2px solid rgba(255, 215, 0, 0.4);
            cursor: pointer;
            transition: var(--transition);
        }
        
        .btn-cta-secondary:hover {
            background: rgba(255, 215, 0, 0.1);
            border-color: var(--color-gold);
            opacity: 1;
        }
        
        /* ===== FAB ===== */
        .fab-royal {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 100;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #1C1C1E 0%, #2A2A2E 100%);
            border: 2px solid var(--color-gold);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-gold);
            font-size: 22px;
            opacity: 0.7;
            animation: fab-breathe 3s ease-in-out infinite;
            transition: var(--transition);
            cursor: pointer;
            text-decoration: none;
        }
        
        .fab-royal:hover {
            opacity: 1;
            transform: scale(1.15);
            box-shadow: 0 8px 32px rgba(255, 215, 0, 0.6);
        }
        
        .fab-royal:active {
            transform: scale(0.95) translateY(2px);
        }
        
        .fab-royal .notification-dot {
            position: absolute;
            top: -3px;
            right: -3px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #D32F2F;
            border: 2px solid #1C1C1E;
            animation: dot-blink 1.5s ease-in-out infinite;
        }
        
        @keyframes fab-breathe {
            0%, 100% {
                opacity: 0.7;
                box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            }
            50% {
                opacity: 0.9;
                box-shadow: 0 6px 28px rgba(255, 215, 0, 0.5);
            }
        }
        
        @keyframes dot-blink {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.85); }
        }
        
        /* ===== FOOTER ===== */
        .site-footer {
            background: #0A2E1C;
            border-top: 1px solid rgba(255, 215, 0, 0.2);
            padding: 56px 0 28px;
            color: #D1F2EB;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        
        .footer-brand .logo-link {
            margin-bottom: 16px;
        }
        
        .footer-desc {
            font-size: 14px;
            line-height: 1.65;
            color: var(--color-palemint);
            margin-bottom: 18px;
            max-width: 360px;
        }
        
        .footer-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        
        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            border-radius: 999px;
            background: rgba(255, 215, 0, 0.08);
            border: 1px solid rgba(255, 215, 0, 0.2);
            font-size: 12px;
            font-weight: 600;
            color: var(--color-gold);
        }
        
        .footer-col-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--color-palemint);
            margin-bottom: 10px;
            transition: var(--transition);
        }
        
        .footer-col a:hover {
            color: var(--color-gold);
            opacity: 1;
            transform: translateX(4px);
        }
        
        .footer-bottom {
            padding-top: 20px;
            border-top: 1px solid rgba(255, 215, 0, 0.12);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        
        .footer-copyright {
            font-size: 13px;
            color: var(--color-muted);
        }
        
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
        }
        
        .footer-links a {
            font-size: 13px;
            color: var(--color-palemint);
            transition: var(--transition);
        }
        
        .footer-links a:hover {
            color: var(--color-gold);
            opacity: 1;
        }
        
        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .tips-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        
        @media (max-width: 768px) {
            .container {
                padding: 0 18px;
            }
            .header-inner {
                padding: 12px 0;
                flex-wrap: wrap;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                border-radius: var(--radius-md);
                padding: 10px;
                background: rgba(255, 255, 255, 0.06);
                border: 1px solid rgba(255, 215, 0, 0.2);
                order: 10;
            }
            .nav-links.mobile-open {
                display: flex;
            }
            .nav-links a {
                text-align: center;
                padding: 12px 16px;
            }
            .mobile-toggle {
                display: flex;
            }
            .nav-actions {
                margin-left: auto;
                gap: 8px;
            }
            .btn-login {
                padding: 8px 14px;
                font-size: 13px;
            }
            .btn-signup {
                padding: 8px 16px;
                font-size: 13px;
            }
            .article-hero-section {
                padding: 40px 0 32px;
            }
            .article-main-section {
                padding: 40px 0 48px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
            .fab-royal {
                bottom: 80px;
                left: 12px;
                width: 50px;
                height: 50px;
                font-size: 20px;
            }
            .cta-card {
                padding: 36px 24px;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 520px) {
            .logo-text {
                font-size: 18px;
            }
            .logo-text span {
                font-size: 11px;
            }
            .logo-icon {
                width: 40px;
                height: 40px;
                font-size: 18px;
            }
            .btn-login, .btn-signup {
                padding: 7px 12px;
                font-size: 12px;
            }
            .article-hero-title {
                font-size: 1.7rem;
            }
            .article-body-content {
                font-size: 15.5px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .cta-card h2 {
                font-size: 1.4rem;
            }
        }

/* roulang page: category1 */
/* ==========================================================
       DESIGN SYSTEM — Lucky Gold & Emerald Jade (Style A)
       Visual Theme: Golden Dragon's Lair (Theme 4)
       ========================================================== */
    :root {
      --bg-primary: #0A2E1C;
      --bg-secondary: #123E25;
      --bg-deep: #071F13;
      --bg-card: #0B3521;
      --gold: #FFD700;
      --gold-deep: #D4B800;
      --gold-light: #FFE85C;
      --lucky-red: #D32F2F;
      --lucky-red-hover: #B71C1C;
      --text-white: #FFFFFF;
      --text-mint: #D1F2EB;
      --text-mint-light: #E8F5F0;
      --text-gray: #9BB8AE;
      --border-gold: rgba(255, 215, 0, 0.35);
      --border-gold-strong: rgba(255, 215, 0, 0.6);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-xl: 28px;
      --shadow-soft: 0 4px 16px rgba(0, 0, 0, 0.25);
      --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.3);
      --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
      --transition-fast: 0.2s ease;
      --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      --font-body: 'Be Vietnam Pro', 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: var(--font-body);
      background: var(--bg-primary);
      color: var(--text-white);
      line-height: 1.65;
      overflow-x: hidden;
      position: relative;
      min-height: 100vh;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--transition-fast);
    }

    a:hover {
      color: var(--gold);
    }

    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
      transition: all var(--transition-fast);
    }

    button:focus,
    a:focus,
    input:focus {
      outline: 2px solid var(--gold);
      outline-offset: 3px;
    }

    /* ========== CONTAINER ========== */
    .container {
      width: 100%;
      max-width: 1180px;
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* ========== HEADER / NAVIGATION ========== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 60;
      background: var(--bg-deep);
      border-bottom: 1px solid var(--border-gold);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      min-height: 64px;
      padding-top: 8px;
      padding-bottom: 8px;
    }

    .logo-link {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
      font-weight: 700;
      font-size: 1.15rem;
      color: var(--text-white);
      text-decoration: none;
    }

    .logo-link:hover {
      color: var(--gold);
    }

    .logo-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--gold) 0%, var(--gold-deep) 100%);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--bg-deep);
      font-size: 1.1rem;
      box-shadow: var(--shadow-gold);
      flex-shrink: 0;
    }

    .logo-text {
      font-size: 1.05rem;
      font-weight: 800;
      letter-spacing: 0.01em;
      line-height: 1.2;
      white-space: nowrap;
    }

    .logo-text span {
      color: var(--gold);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 4px;
      list-style: none;
    }

    .nav-links a {
      padding: 8px 16px;
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-mint);
      position: relative;
      white-space: nowrap;
      transition: color var(--transition-fast), background var(--transition-fast);
    }

    .nav-links a:hover {
      color: var(--gold);
      background: rgba(255, 215, 0, 0.08);
    }

    .nav-links a.active {
      color: var(--gold);
      background: rgba(255, 215, 0, 0.12);
      box-shadow: inset 0 0 0 1px var(--border-gold);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .btn-login {
      padding: 8px 18px;
      border-radius: var(--radius-sm);
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-mint);
      white-space: nowrap;
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.2);
      transition: all var(--transition-fast);
    }

    .btn-login:hover {
      color: var(--gold);
      border-color: var(--border-gold-strong);
      background: rgba(255, 215, 0, 0.06);
    }

    .btn-signup {
      padding: 9px 20px;
      border-radius: var(--radius-sm);
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--bg-deep);
      white-space: nowrap;
      background: linear-gradient(135deg, var(--gold) 0%, var(--gold-deep) 100%);
      box-shadow: var(--shadow-gold);
      transition: all var(--transition-fast);
    }

    .btn-signup:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(255, 215, 0, 0.4);
      background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 100%);
    }

    .btn-signup:active {
      transform: translateY(0);
      box-shadow: 0 2px 8px rgba(255, 215, 0, 0.25);
    }

    /* ========== MOBILE NAV TOGGLE ========== */
    .nav-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      width: 40px;
      height: 40px;
      padding: 8px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-gold);
      background: rgba(0, 0, 0, 0.3);
      align-items: center;
      justify-content: center;
    }

    .nav-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      background: var(--gold);
      border-radius: 2px;
      transition: all var(--transition-fast);
    }

    /* ========== BREADCRUMB ========== */
    .breadcrumb-nav {
      background: var(--bg-deep);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      padding: 14px 0;
    }

    .breadcrumb-list {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 6px;
      font-size: 0.85rem;
      color: var(--text-gray);
      list-style: none;
    }

    .breadcrumb-list a {
      color: var(--text-mint);
      font-weight: 500;
    }

    .breadcrumb-list a:hover {
      color: var(--gold);
    }

    .breadcrumb-sep {
      color: var(--gold);
      font-size: 0.75rem;
    }

    .breadcrumb-current {
      color: var(--gold);
      font-weight: 600;
    }

    /* ========== FLOATING ACTION BUTTON ========== */
    .fab-left {
      position: fixed;
      left: 16px;
      bottom: 96px;
      z-index: 50;
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: radial-gradient(circle at 30% 25%, #4a2a0a, #0a0a0a 65%);
      border: 2px solid var(--gold);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      color: var(--gold);
      box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
      opacity: 0.7;
      transition: all var(--transition-base);
      animation: float-gentle 3s ease-in-out infinite;
      cursor: pointer;
    }

    .fab-left:hover {
      opacity: 1;
      transform: scale(1.1);
      box-shadow: 0 8px 32px rgba(255, 215, 0, 0.5);
    }

    .fab-left:active {
      transform: scale(0.95) translateY(2px);
      opacity: 1;
    }

    .fab-notification {
      position: absolute;
      top: -4px;
      right: -4px;
      width: 16px;
      height: 16px;
      background: #E53935;
      border: 2px solid var(--bg-deep);
      border-radius: 50%;
      animation: blink-red 1.8s ease-in-out infinite;
    }

    @keyframes float-gentle {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-6px); }
    }

    @keyframes blink-red {
      0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(229, 57, 53, 0.6); }
      50% { opacity: 0.6; box-shadow: 0 0 0 6px rgba(229, 57, 53, 0); }
    }

    /* ========== HERO ========== */
    .hero-category {
      position: relative;
      padding-top: 80px;
      padding-bottom: 48px;
      background: var(--bg-primary);
    }

    .hero-category::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 100%;
      background: radial-gradient(ellipse at 30% 20%, rgba(212, 175, 55, 0.14) 0%, transparent 65%),
                  radial-gradient(ellipse at 75% 80%, rgba(11, 60, 34, 0.9) 0%, transparent 60%);
      pointer-events: none;
    }

    .hero-category-inner {
      position: relative;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: center;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(212, 175, 55, 0.14);
      border: 1px solid var(--border-gold);
      border-radius: 999px;
      padding: 6px 16px 6px 12px;
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--gold);
      letter-spacing: 0.02em;
      margin-bottom: 16px;
    }

    .hero-badge i {
      font-size: 0.8rem;
      color: var(--gold);
    }

    .hero-category h1 {
      font-size: 2.3rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 16px;
      color: var(--text-white);
    }

    .hero-category h1 span {
      color: var(--gold);
    }

    .hero-category .hero-sub {
      font-size: 1.0rem;
      color: var(--text-mint);
      line-height: 1.65;
      max-width: 540px;
      margin-bottom: 20px;
    }

    .hero-stats {
      display: flex;
      gap: 28px;
      flex-wrap: wrap;
      margin-bottom: 20px;
    }

    .hero-stat-item {
      display: flex;
      flex-direction: column;
      gap: 2px;
    }

    .hero-stat-number {
      font-size: 1.7rem;
      font-weight: 800;
      color: var(--gold);
      line-height: 1.2;
    }

    .hero-stat-label {
      font-size: 0.8rem;
      color: var(--text-gray);
    }

    .hero-cta-row {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }

    .btn-gold {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      padding: 13px 24px;
      border-radius: var(--radius-md);
      background: linear-gradient(135deg, var(--gold) 0%, var(--gold-deep) 100%);
      color: var(--bg-deep);
      font-size: 0.95rem;
      font-weight: 700;
      box-shadow: var(--shadow-gold);
      transition: all var(--transition-base);
    }

    .btn-gold:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 32px rgba(255, 215, 0, 0.5);
      color: var(--bg-deep);
    }

    .btn-gold:active {
      transform: translateY(0);
      box-shadow: 0 3px 10px rgba(255, 215, 0, 0.3);
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 12px 24px;
      border-radius: var(--radius-md);
      background: transparent;
      color: var(--text-mint);
      border: 1px solid rgba(255, 215, 0, 0.4);
      font-size: 0.95rem;
      font-weight: 600;
      transition: all var(--transition-base);
    }

    .btn-outline:hover {
      color: var(--gold);
      border-color: var(--border-gold-strong);
      background: rgba(255, 215, 0, 0.06);
      transform: translateY(-2px);
    }

    .btn-outline:active {
      transform: translateY(0);
    }

    .hero-visual {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      position: relative;
    }

    .hero-visual-main {
      width: 100%;
      max-width: 480px;
      border-radius: var(--radius-xl);
      border: 1px solid var(--border-gold-strong);
      overflow: hidden;
      box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
      position: relative;
    }

    .hero-visual-main img {
      width: 100%;
      height: auto;
      aspect-ratio: 16/10;
      object-fit: cover;
      display: block;
    }

    .hero-visual-tag {
      position: absolute;
      top: 14px;
      left: 14px;
      background: var(--bg-deep);
      color: var(--gold);
      border: 1px solid var(--border-gold-strong);
      border-radius: var(--radius-sm);
      padding: 4px 12px;
      font-size: 0.75rem;
      font-weight: 700;
      letter-spacing: 0.04em;
    }

    .hero-visual-tag.tag-red {
      background: rgba(211, 47, 47, 0.9);
      color: white;
      border-color: #ff6b6b;
    }

    /* ========== MAIN CONTENT SECTIONS ========== */
    .main-content {
      padding: 48px 0;
    }

    .section-block {
      margin-bottom: 56px;
    }

    .section-block:last-child {
      margin-bottom: 0;
    }

    .section-heading {
      margin-bottom: 28px;
      position: relative;
    }

    .section-heading h2 {
      font-size: 1.7rem;
      font-weight: 800;
      line-height: 1.3;
      color: var(--text-white);
      margin-bottom: 10px;
      position: relative;
      display: inline-block;
    }

    .section-heading h2::after {
      content: '';
      display: block;
      width: 64px;
      height: 4px;
      background: linear-gradient(90deg, var(--gold) 0%, transparent 100%);
      border-radius: 2px;
      margin-top: 8px;
    }

    .section-heading p {
      font-size: 1.02rem;
      color: var(--text-gray);
      max-width: 620px;
      line-height: 1.6;
    }

    /* ========== STEP GRID ========== */
    .step-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      margin-top: 16px;
    }

    .step-card {
      background: var(--bg-card);
      border: 1px solid rgba(255, 215, 0, 0.22);
      border-radius: var(--radius-lg);
      padding: 26px 24px;
      display: flex;
      gap: 18px;
      align-items: flex-start;
      transition: all var(--transition-base);
      position: relative;
    }

    .step-card:hover {
      border-color: var(--border-gold-strong);
      box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
      transform: translateY(-3px);
    }

    .step-number {
      width: 40px;
      height: 40px;
      min-width: 40px;
      background: linear-gradient(135deg, var(--gold) 0%, var(--gold-deep) 100%);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--bg-deep);
      box-shadow: var(--shadow-gold);
    }

    .step-content h3 {
      font-size: 1.12rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 6px;
    }

    .step-content p {
      font-size: 0.92rem;
      color: var(--text-gray);
      line-height: 1.6;
    }

    .step-content .step-note {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      margin-top: 10px;
      font-size: 0.78rem;
      color: var(--gold);
      font-weight: 600;
      background: rgba(255, 215, 0, 0.1);
      border-radius: var(--radius-sm);
      padding: 4px 9px;
    }

    /* ========== TIPS / METHODS LIST ========== */
    .method-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-top: 16px;
    }

    .method-item {
      display: flex;
      align-items: center;
      gap: 14px;
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 16px 18px;
      transition: all var(--transition-fast);
    }

    .method-item:hover {
      border-color: var(--border-gold);
      background: rgba(255, 215, 0, 0.04);
    }

    .method-icon {
      width: 44px;
      height: 44px;
      min-width: 44px;
      background: rgba(255, 215, 0, 0.12);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--gold);
      font-size: 1.2rem;
    }

    .method-text {
      flex: 1;
    }

    .method-text h4 {
      font-size: 1.0rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 2px;
    }

    .method-text p {
      font-size: 0.85rem;
      color: var(--text-gray);
    }

    .method-badge {
      font-size: 0.72rem;
      font-weight: 700;
      color: var(--gold);
      background: rgba(255, 215, 0, 0.12);
      border-radius: 999px;
      padding: 3px 12px;
      white-space: nowrap;
    }

    .method-badge.badge-green {
      color: #7CFC00;
      background: rgba(60, 179, 113, 0.14);
    }

    .method-badge.badge-blue {
      color: #00F0FF;
      background: rgba(0, 240, 255, 0.1);
    }

    /* ========== FAQ SECTION ========== */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 16px;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all var(--transition-base);
    }

    .faq-item:hover {
      border-color: var(--border-gold);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding: 18px 20px;
      text-align: left;
      color: var(--text-white);
      font-size: 0.97rem;
      font-weight: 600;
      background: transparent;
      border: none;
      cursor: pointer;
      transition: all var(--transition-fast);
    }

    .faq-question:hover {
      color: var(--gold);
    }

    .faq-icon {
      min-width: 20px;
      height: 20px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--gold);
      font-size: 0.95rem;
      transition: transform var(--transition-base);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height var(--transition-base), padding var(--transition-base);
      padding: 0 20px;
    }

    .faq-answer p {
      font-size: 0.9rem;
      color: var(--text-gray);
      line-height: 1.7;
      padding-bottom: 18px;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding-top: 0;
    }

    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }

    /* ========== SECURITY SECTION ========== */
    .security-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
      margin-top: 16px;
    }

    .security-card {
      background: var(--bg-card);
      border: 1px solid rgba(255, 215, 0, 0.2);
      border-radius: var(--radius-lg);
      padding: 22px 20px;
      transition: all var(--transition-base);
    }

    .security-card:hover {
      border-color: var(--border-gold-strong);
      transform: translateY(-3px);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    }

    .security-card i {
      font-size: 1.8rem;
      color: var(--gold);
      margin-bottom: 10px;
      display: block;
    }

    .security-card h4 {
      font-size: 1.02rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 6px;
    }

    .security-card p {
      font-size: 0.85rem;
      color: var(--text-gray);
      line-height: 1.6;
    }

    /* ========== CTA SECTION ========== */
    .cta-final {
      background: linear-gradient(135deg, #0A2E1C 0%, #123E25 50%, #0A2E1C 100%);
      border: 1px solid var(--border-gold);
      border-radius: var(--radius-xl);
      padding: 36px 28px;
      margin-top: 24px;
      text-align: center;
      box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);
      position: relative;
      overflow: hidden;
    }

    .cta-final::before {
      content: '';
      position: absolute;
      top: -80%;
      left: 50%;
      transform: translateX(-50%);
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(255, 215, 0, 0.16) 0%, transparent 70%);
      pointer-events: none;
    }

    .cta-final h2 {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--text-white);
      margin-bottom: 10px;
      position: relative;
    }

    .cta-final h2 span {
      color: var(--gold);
    }

    .cta-final p {
      font-size: 0.95rem;
      color: var(--text-mint);
      max-width: 540px;
      margin: 0 auto 20px;
      position: relative;
    }

    .cta-final .hero-cta-row {
      justify-content: center;
      position: relative;
    }

    /* ========== FOOTER ========== */
    .site-footer {
      background: var(--bg-deep);
      border-top: 1px solid var(--border-gold);
      padding: 40px 0 20px;
      margin-top: 48px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 28px;
      margin-bottom: 28px;
    }

    .footer-brand {
      max-width: 360px;
    }

    .footer-brand .logo-link {
      margin-bottom: 12px;
    }

    .footer-desc {
      font-size: 0.88rem;
      color: var(--text-gray);
      line-height: 1.65;
      margin-bottom: 16px;
    }

    .footer-badge-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .footer-badge {
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--text-mint);
      background: rgba(255, 255, 255, 0.06);
      border-radius: 999px;
      padding: 5px 11px;
      display: inline-flex;
      align-items: center;
      gap: 5px;
    }

    .footer-badge i {
      color: var(--gold);
      font-size: 0.7rem;
    }

    .footer-col-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 12px;
      letter-spacing: 0.02em;
    }

    .footer-col a {
      display: block;
      font-size: 0.85rem;
      color: var(--text-gray);
      margin-bottom: 8px;
      line-height: 1.4;
    }

    .footer-col a:hover {
      color: var(--gold);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.2);
      padding-top: 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 10px;
    }

    .footer-copyright {
      font-size: 0.78rem;
      color: var(--text-gray);
    }

    .footer-links {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
    }

    .footer-links a {
      font-size: 0.78rem;
      color: var(--text-gray);
    }

    .footer-links a:hover {
      color: var(--gold);
    }

    /* ========== BOTTOM FIXED CTA (Task B) ========== */
    .bottom-cta-fixed {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      z-index: 55;
      background: var(--bg-deep);
      border-top: 1px solid var(--border-gold);
      padding: 10px 0;
      display: none;
      box-shadow: 0 -6px 24px rgba(0, 0, 0, 0.6);
    }

    .bottom-cta-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
    }

    .bottom-cta-text {
      font-size: 0.88rem;
      color: var(--text-mint);
      font-weight: 600;
    }

    .bottom-cta-text span {
      color: var(--gold);
    }

    .bottom-cta-actions {
      display: flex;
      gap: 10px;
      align-items: center;
    }

    /* ========== RESPONSIVE ========== */
    @media (max-width: 1024px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 22px;
      }

      .hero-category h1 {
        font-size: 2.0rem;
      }

      .step-grid {
        grid-template-columns: 1fr;
      }

      .security-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .header-inner {
        min-height: 56px;
      }

      .nav-toggle {
        display: flex;
      }

      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-deep);
        border-bottom: 1px solid var(--border-gold);
        flex-direction: column;
        align-items: stretch;
        padding: 12px 20px;
        gap: 6px;
        box-shadow: var(--shadow-card);
      }

      .nav-links.open {
        display: flex;
      }

      .nav-links a {
        padding: 10px 14px;
        border-radius: var(--radius-sm);
      }

      .header-actions {
        gap: 6px;
      }

      .btn-login {
        padding: 7px 13px;
        font-size: 0.8rem;
      }

      .btn-signup {
        padding: 7px 15px;
        font-size: 0.8rem;
      }

      .hero-category {
        padding-top: 68px;
        padding-bottom: 32px;
      }

      .hero-category-inner {
        grid-template-columns: 1fr;
        gap: 24px;
        text-align: left;
      }

      .hero-category h1 {
        font-size: 1.7rem;
      }

      .hero-visual-main {
        max-width: 100%;
      }

      .hero-stats {
        gap: 20px;
      }

      .hero-stat-number {
        font-size: 1.4rem;
      }

      .section-heading h2 {
        font-size: 1.4rem;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }

      .footer-brand {
        max-width: none;
      }

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
      }

      .security-grid {
        grid-template-columns: 1fr;
      }

      .cta-final {
        padding: 26px 18px;
      }

      .cta-final h2 {
        font-size: 1.4rem;
      }

      .bottom-cta-fixed {
        display: block;
      }

      .bottom-cta-inner {
        flex-wrap: wrap;
        gap: 8px;
      }

      .bottom-cta-actions {
        width: 100%;
        justify-content: flex-end;
      }

      .fab-left {
        bottom: 72px;
        left: 12px;
        width: 48px;
        height: 48px;
        font-size: 1.2rem;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }

      .hero-category h1 {
        font-size: 1.5rem;
      }

      .hero-sub {
        font-size: 0.92rem;
      }

      .step-card {
        padding: 20px 16px;
        gap: 12px;
      }

      .step-number {
        width: 34px;
        height: 34px;
        min-width: 34px;
        font-size: 1rem;
      }

      .section-block {
        margin-bottom: 40px;
      }

      .main-content {
        padding: 32px 0;
      }

      .method-item {
        padding: 13px 14px;
        gap: 10px;
      }

      .method-icon {
        width: 38px;
        height: 38px;
        min-width: 38px;
        font-size: 1rem;
      }

      .footer-badge {
        font-size: 0.7rem;
        padding: 4px 8px;
      }

      .bottom-cta-fixed {
        padding: 8px 0;
      }

      .bottom-cta-text {
        font-size: 0.78rem;
      }

      .bottom-cta-actions .btn-gold,
      .bottom-cta-actions .btn-outline {
        padding: 9px 14px;
        font-size: 0.8rem;
      }
    }

/* roulang page: category2 */
:root {
            --bg-dark: #0F0C20;
            --bg-deep: #0B1A30;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --card-bg: rgba(255, 255, 255, 0.04);
            --card-border: rgba(255, 255, 255, 0.08);
            --radius: 16px;
            --shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
            --transition: 0.25s ease;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; display: block; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .section-pad { padding: 72px 0; }
        .text-gradient {
            background: linear-gradient(135deg, #CCFF00 0%, #00F0FF 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            backdrop-filter: blur(8px);
        }
        .btn-primary {
            background: linear-gradient(135deg, #CCFF00 0%, #14B8A6 100%);
            color: #0F0C20;
            font-weight: 700;
            padding: 14px 28px;
            border-radius: 999px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.4);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: white;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: 999px;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline:hover {
            border-color: #CCFF00;
            color: #CCFF00;
            background: rgba(204, 255, 0, 0.05);
        }
        .nav-links a {
            position: relative;
            padding: 8px 16px;
            border-radius: 999px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
        }
        .nav-links a:hover, .nav-links a.active {
            color: white;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: #CCFF00;
            border-radius: 2px;
        }
        .hero-section {
            background: 
                radial-gradient(circle at 20% 30%, rgba(204, 255, 0, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(0, 240, 255, 0.12) 0%, transparent 50%),
                var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
            min-height: 85vh;
        }
        .hero-visual {
            position: relative;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            border-radius: 24px;
            min-height: 520px;
            display: flex;
            align-items: flex-end;
            justify-content: center;
            padding: 32px;
            box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
            border: 1px solid rgba(255,255,255,0.1);
        }
        .hero-visual::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15,12,32,0.95) 0%, rgba(15,12,32,0.3) 50%, transparent 100%);
            border-radius: 24px;
        }
        .hero-visual-content {
            position: relative;
            z-index: 2;
            text-align: center;
            width: 100%;
        }
        .step-card {
            background: rgba(15, 12, 32, 0.7);
            border: 1px solid rgba(204, 255, 0, 0.3);
            border-radius: 16px;
            padding: 24px;
            transition: all 0.3s;
        }
        .step-card:hover {
            transform: translateY(-8px);
            border-color: #CCFF00;
            box-shadow: 0 12px 30px rgba(0, 240, 255, 0.1);
        }
        .faq-item {
            border-bottom: 1px solid rgba(255,255,255,0.1);
            padding: 24px 0;
        }
        .faq-question {
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--text-silver);
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-top: 12px;
        }
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: rgba(0,0,0,0.7);
            backdrop-filter: blur(8px);
            border: 1px solid transparent;
            border-image: linear-gradient(45deg, #CCFF00, #00F0FF) 1;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #00F0FF;
            font-size: 1.4rem;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(0,240,255,0.5);
            opacity: 0.7;
            transition: all 0.3s;
            animation: breathe 2.5s infinite;
        }
        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0,240,255,0.9);
        }
        @keyframes breathe {
            0%, 100% { opacity: 0.6; }
            50% { opacity: 0.9; }
        }
        @media (max-width: 1024px) {
            .hero-grid { grid-template-columns: 1fr; gap: 40px; }
            .hero-visual { min-height: 380px; }
        }
        @media (max-width: 768px) {
            .section-pad { padding: 48px 0; }
            .container { padding: 0 16px; }
            .nav-links { display: flex; overflow-x: auto; gap: 8px; }
            .hero-grid { gap: 24px; }
            .hero-visual { min-height: 300px; }
            .btn-primary, .btn-outline { padding: 12px 20px; font-size: 0.95rem; }
        }
        @media (max-width: 520px) {
            .hero-grid { gap: 16px; }
            .hero-visual { min-height: 250px; padding: 16px; }
            .section-pad { padding: 36px 0; }
        }