/* roulang page: index */
:root{
  --blue:#0b63d6;
  --blue-dark:#0a4fa8;
  --blue-deep:#093b7d;
  --blue-soft:#e8f1fd;
  --blue-line:#cfe0f7;
  --ink:#12263f;
  --ink-soft:#4b5f78;
  --muted:#7b8ba1;
  --bg:#f6f9fe;
  --white:#ffffff;
  --gold:#f5a623;
  --green:#1fa869;
  --red:#e14b4b;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 8px 24px rgba(11,99,214,.10);
  --shadow-lg:0 18px 44px rgba(9,59,125,.16);
  --shadow-hover:0 14px 34px rgba(11,99,214,.18);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Segoe UI","Be Vietnam Pro",Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none;transition:color .2s}
a:hover{color:var(--blue-dark)}
button{font-family:inherit;cursor:pointer;border:none}
input,textarea,select{font-family:inherit;font-size:15px}
ul{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 22px}

/* ===== HEADER (double-row) ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:var(--white);box-shadow:0 2px 14px rgba(9,59,125,.08)}
.header-top{display:flex;align-items:center;justify-content:space-between;gap:16px;height:62px;max-width:var(--container);margin:0 auto;padding:0 22px}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{width:40px;height:40px;flex:0 0 40px;border-radius:11px;background:linear-gradient(135deg,var(--blue),var(--blue-deep));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:18px;box-shadow:0 4px 12px rgba(11,99,214,.35)}
.brand-name{font-weight:800;font-size:16px;color:var(--ink);line-height:1.25;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-name small{display:block;font-size:11px;font-weight:600;color:var(--blue);letter-spacing:.4px}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.btn-login{background:transparent;color:var(--blue);font-weight:700;font-size:14px;padding:9px 12px;border-radius:9px;transition:background .2s}
.btn-login:hover{background:var(--blue-soft);color:var(--blue-dark)}
.btn-signup{background:linear-gradient(135deg,var(--blue),var(--blue-dark));color:#fff;font-weight:700;font-size:14px;padding:10px 20px;border-radius:9px;box-shadow:0 5px 14px rgba(11,99,214,.32);transition:transform .2s,box-shadow .2s;display:inline-block}
.btn-signup:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(11,99,214,.42);color:#fff}
.btn-signup:active{transform:translateY(0)}
.nav-tabs-row{border-top:1px solid var(--blue-line);background:var(--white)}
.nav-tabs{display:flex;gap:4px;max-width:var(--container);margin:0 auto;padding:0 22px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.nav-tabs::-webkit-scrollbar{display:none}
.nav-tabs a{flex:0 0 auto;padding:11px 18px;font-size:14px;font-weight:600;color:var(--ink-soft);border-bottom:3px solid transparent;transition:color .2s,border-color .2s;white-space:nowrap}
.nav-tabs a:hover{color:var(--blue)}
.nav-tabs a.active{color:var(--blue);border-bottom-color:var(--blue);font-weight:700}
body{padding-top:110px}

/* ===== HERO ===== */
.hero{position:relative;background:linear-gradient(rgba(9,59,125,.86),rgba(11,79,168,.82)),url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;color:#fff;padding:58px 0 54px}
.hero-inner{max-width:var(--container);margin:0 auto;padding:0 22px;display:grid;grid-template-columns:1.5fr 1fr;gap:44px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.3px;margin-bottom:16px}
.hero h1{font-size:34px;line-height:1.28;font-weight:800;margin-bottom:14px}
.hero p.lead{font-size:16px;color:#dbe8fb;max-width:620px;margin-bottom:24px}
.hero-ctas{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.btn-hero{display:inline-flex;align-items:center;gap:9px;padding:13px 26px;border-radius:11px;font-weight:700;font-size:15px;transition:transform .2s,box-shadow .2s}
.btn-hero.android{background:#2ecc71;color:#fff;box-shadow:0 8px 22px rgba(46,204,113,.35)}
.btn-hero.ios{background:#fff;color:var(--blue-deep);box-shadow:0 8px 22px rgba(255,255,255,.22)}
.btn-hero.guide{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.55)}
.btn-hero:hover{transform:translateY(-2px);color:inherit}
.btn-hero.android:hover{color:#fff}
.btn-hero.ios:hover{color:var(--blue-deep)}
.btn-hero.guide:hover{background:rgba(255,255,255,.12);color:#fff}
.hero-stats{display:flex;flex-wrap:wrap;gap:26px}
.hero-stat b{display:block;font-size:24px;font-weight:800}
.hero-stat span{font-size:13px;color:#b9d1f3}
.hero-panel{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.24);backdrop-filter:blur(6px);border-radius:var(--radius);padding:24px}
.hero-panel h3{font-size:16px;font-weight:700;margin-bottom:14px;color:#fff}
.hero-check{display:flex;gap:11px;align-items:flex-start;padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.18);font-size:14px;color:#e4eefc}
.hero-check:last-child{border-bottom:none}
.hero-check .tick{flex:0 0 22px;width:22px;height:22px;border-radius:50%;background:#2ecc71;color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;margin-top:2px}

/* ===== SECTION BASE ===== */
section.block{padding:64px 0}
section.block.alt{background:var(--white)}
.sec-head{max-width:720px;margin-bottom:36px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-tag{display:inline-block;background:var(--blue-soft);color:var(--blue);font-size:12px;font-weight:700;letter-spacing:.8px;padding:5px 13px;border-radius:999px;margin-bottom:12px;text-transform:uppercase}
.sec-head h2{font-size:27px;font-weight:800;line-height:1.32;margin-bottom:10px;color:var(--ink)}
.sec-head p{color:var(--ink-soft);font-size:15px}

/* Benefits */
.benefit-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.benefit-card{background:var(--white);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s;border-top:3px solid transparent}
.benefit-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-top-color:var(--blue)}
.benefit-ico{width:50px;height:50px;border-radius:13px;background:var(--blue-soft);display:flex;align-items:center;justify-content:center;font-size:23px;margin-bottom:15px}
.benefit-card h3{font-size:16px;font-weight:700;margin-bottom:8px}
.benefit-card p{font-size:14px;color:var(--ink-soft)}

/* Featured apps */
.app-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.app-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column}
.app-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.app-thumb{position:relative;height:170px;overflow:hidden}
.app-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.app-card:hover .app-thumb img{transform:scale(1.05)}
.app-flag{position:absolute;top:12px;left:12px;background:var(--red);color:#fff;font-size:11px;font-weight:800;padding:4px 10px;border-radius:6px;letter-spacing:.5px}
.app-flag.new{background:var(--green)}
.app-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.app-body h3{font-size:16px;font-weight:700;margin-bottom:7px}
.app-body p{font-size:13.5px;color:var(--ink-soft);margin-bottom:14px;flex:1}
.app-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--muted);margin-bottom:14px}
.app-meta .os{background:var(--blue-soft);color:var(--blue);font-weight:700;padding:3px 9px;border-radius:6px}
.btn-dl{display:block;text-align:center;background:linear-gradient(135deg,var(--blue),var(--blue-dark));color:#fff;font-weight:700;font-size:14px;padding:11px;border-radius:9px;transition:box-shadow .2s,transform .2s}
.btn-dl:hover{box-shadow:0 8px 18px rgba(11,99,214,.4);transform:translateY(-1px);color:#fff}

/* Requirements */
.req-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.req-col{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px}
.req-col h3{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;margin-bottom:16px}
.req-col h3 .os-dot{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:17px;color:#fff}
.os-dot.and{background:#2ecc71}
.os-dot.ios{background:#12263f}
.req-list li{display:flex;gap:10px;padding:9px 0;border-bottom:1px solid #eef3fa;font-size:14px;color:var(--ink-soft)}
.req-list li:last-child{border-bottom:none}
.req-list li b{color:var(--ink);min-width:130px;font-weight:700}

/* Ranking */
.rank-table{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.rank-row{display:grid;grid-template-columns:56px 1.6fr 1fr 1fr 110px;align-items:center;gap:14px;padding:15px 22px;border-bottom:1px solid #eef3fa;font-size:14px;transition:background .2s}
.rank-row:last-child{border-bottom:none}
.rank-row:hover{background:var(--blue-soft)}
.rank-row.head{background:var(--blue-deep);color:#cfe0f7;font-size:12.5px;font-weight:700;text-transform:uppercase;letter-spacing:.5px}
.rank-row.head:hover{background:var(--blue-deep)}
.rank-num{width:32px;height:32px;border-radius:9px;background:var(--blue-soft);color:var(--blue);font-weight:800;display:flex;align-items:center;justify-content:center;font-size:14px}
.rank-row:nth-child(2) .rank-num{background:var(--gold);color:#fff}
.rank-row:nth-child(3) .rank-num{background:#b9c6d8;color:#fff}
.rank-row:nth-child(4) .rank-num{background:#d9a468;color:#fff}
.rank-name{font-weight:700;color:var(--ink)}
.rank-name small{display:block;font-weight:500;color:var(--muted);font-size:12px}
.trend-up{color:var(--green);font-weight:700}
.rank-cta{text-align:right}
.rank-cta a{font-size:13px;font-weight:700;color:var(--blue);border:1.5px solid var(--blue-line);padding:7px 14px;border-radius:8px;transition:background .2s,color .2s;display:inline-block}
.rank-cta a:hover{background:var(--blue);color:#fff;border-color:var(--blue)}

/* Topics */
.topic-cloud{display:flex;flex-wrap:wrap;gap:12px}
.topic-cloud a{background:var(--white);border:1px solid var(--blue-line);color:var(--ink-soft);font-size:13.5px;font-weight:600;padding:9px 18px;border-radius:999px;box-shadow:0 3px 10px rgba(11,99,214,.06);transition:all .2s}
.topic-cloud a:hover{background:var(--blue);color:#fff;border-color:var(--blue);transform:translateY(-2px)}
.topic-cloud a.hot{border-color:var(--gold);color:#b57708}
.topic-cloud a.hot:hover{background:var(--gold);color:#fff}

/* Reviews */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review-card{background:var(--white);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);position:relative}
.review-card::before{content:"“";position:absolute;top:8px;right:20px;font-size:56px;color:var(--blue-soft);font-family:Georgia,serif;line-height:1}
.review-stars{color:var(--gold);font-size:14px;letter-spacing:2px;margin-bottom:10px}
.review-card p{font-size:14px;color:var(--ink-soft);margin-bottom:16px}
.review-user{display:flex;align-items:center;gap:11px}
.review-avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--blue-deep));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px}
.review-user b{font-size:14px;display:block}
.review-user span{font-size:12px;color:var(--muted)}

/* News */
.news-wrap{display:grid;grid-template-columns:1.6fr 1fr;gap:28px;align-items:start}
.news-list{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:8px 24px}
.news-item{display:flex;align-items:baseline;gap:14px;padding:15px 0;border-bottom:1px solid #eef3fa}
.news-item:last-child{border-bottom:none}
.news-item .dot{flex:0 0 8px;width:8px;height:8px;border-radius:50%;background:var(--blue);position:relative;top:-2px}
.news-item a{flex:1;font-size:15px;font-weight:600;color:var(--ink);line-height:1.5}
.news-item a:hover{color:var(--blue)}
.news-item .cat{flex:0 0 auto;font-size:11.5px;font-weight:700;color:var(--blue);background:var(--blue-soft);padding:3px 10px;border-radius:6px}
.news-item time{flex:0 0 auto;font-size:12.5px;color:var(--muted)}
.news-empty{padding:28px 0;color:var(--muted);font-size:14px;text-align:center}
.news-side{background:linear-gradient(150deg,var(--blue-deep),var(--blue));border-radius:var(--radius);padding:28px;color:#fff;box-shadow:var(--shadow-lg)}
.news-side h3{font-size:18px;font-weight:800;margin-bottom:10px}
.news-side p{font-size:14px;color:#cfe0f7;margin-bottom:18px}
.news-side img{border-radius:10px;margin-bottom:18px;height:150px;width:100%;object-fit:cover}
.news-side a.side-cta{display:block;text-align:center;background:#fff;color:var(--blue-deep);font-weight:800;padding:12px;border-radius:9px;font-size:14px;transition:transform .2s}
.news-side a.side-cta:hover{transform:translateY(-2px);color:var(--blue-deep)}

/* Member */
.vip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:28px}
.vip-item{background:var(--white);border:1px solid var(--blue-line);border-radius:var(--radius-sm);padding:22px 18px;text-align:left;transition:border-color .2s,box-shadow .2s}
.vip-item:hover{border-color:var(--blue);box-shadow:var(--shadow)}
.vip-item .em{font-size:26px;margin-bottom:10px}
.vip-item h4{font-size:15px;font-weight:700;margin-bottom:6px}
.vip-item p{font-size:13px;color:var(--ink-soft)}
.vip-cta{text-align:center}
.vip-cta a{display:inline-block;background:linear-gradient(135deg,var(--gold),#e08c0b);color:#fff;font-weight:800;padding:13px 34px;border-radius:11px;font-size:15px;box-shadow:0 8px 22px rgba(245,166,35,.35);transition:transform .2s}
.vip-cta a:hover{transform:translateY(-2px);color:#fff}

/* FAQ */
.faq-wrap{max-width:860px}
.faq-item{background:var(--white);border-radius:var(--radius-sm);box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 22px;font-weight:700;font-size:15px;display:flex;justify-content:space-between;align-items:center;gap:14px;transition:color .2s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;color:var(--blue);font-weight:600;flex:0 0 auto;transition:transform .25s}
.faq-item[open] summary{color:var(--blue)}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-body{padding:0 22px 20px;font-size:14px;color:var(--ink-soft)}

/* Form */
.form-band{background:linear-gradient(rgba(9,59,125,.90),rgba(11,79,168,.88)),url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;color:#fff}
.form-wrap{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.form-wrap h2{font-size:26px;font-weight:800;margin-bottom:12px;line-height:1.35}
.form-wrap .form-lead{color:#d5e4fa;font-size:15px;margin-bottom:20px}
.form-points li{display:flex;gap:10px;font-size:14px;color:#e4eefc;padding:6px 0}
.form-points li::before{content:"✓";color:#2ecc71;font-weight:800}
.form-card{background:var(--white);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-lg);color:var(--ink)}
.form-card h3{font-size:18px;font-weight:800;margin-bottom:6px}
.form-card .fc-sub{font-size:13.5px;color:var(--ink-soft);margin-bottom:18px}
.form-row{margin-bottom:14px}
.form-row label{display:block;font-size:13px;font-weight:700;margin-bottom:6px;color:var(--ink)}
.form-row input,.form-row select{width:100%;padding:12px 14px;border:1.5px solid var(--blue-line);border-radius:9px;background:#fbfdff;color:var(--ink);outline:none;transition:border-color .2s,box-shadow .2s}
.form-row input:focus,.form-row select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(11,99,214,.14)}
.form-submit{width:100%;background:linear-gradient(135deg,var(--blue),var(--blue-dark));color:#fff;font-weight:800;font-size:15px;padding:14px;border-radius:10px;box-shadow:0 8px 20px rgba(11,99,214,.35);transition:transform .2s}
.form-submit:hover{transform:translateY(-2px)}
.form-note{font-size:12px;color:var(--muted);margin-top:12px;text-align:center}

/* Footer */
.site-footer{background:var(--blue-deep);color:#b9d1f3;padding:52px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding-bottom:38px}
.footer-brand .brand-mark{margin-bottom:14px}
.footer-brand p{font-size:13.5px;line-height:1.7}
.site-footer h4{color:#fff;font-size:14px;font-weight:800;margin-bottom:14px;letter-spacing:.4px}
.site-footer li{margin-bottom:9px}
.site-footer li a{color:#b9d1f3;font-size:13.5px;transition:color .2s}
.site-footer li a:hover{color:#fff}
.footer-pay{display:flex;flex-wrap:wrap;gap:8px}
.footer-pay span{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);padding:6px 13px;border-radius:8px;font-size:12px;font-weight:700;color:#e4eefc}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:18px 0;font-size:12.5px;color:#8fb0dd;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px}
.footer-bottom .container{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;width:100%}

/* FAB */
.fab{position:fixed;left:16px;bottom:96px;z-index:120;width:58px;height:58px;border-radius:50%;background:linear-gradient(145deg,#0b63d6,#093b7d);border:2px solid var(--gold);display:flex;align-items:center;justify-content:center;font-size:24px;color:#fff;box-shadow:0 4px 20px rgba(245,166,35,.35);opacity:.82;animation:fabfloat 3s ease-in-out infinite;transition:transform .25s,opacity .25s}
.fab:hover{transform:scale(1.1);opacity:1}
.fab:active{transform:scale(.95) translateY(2px)}
.fab .fab-dot{position:absolute;top:2px;right:2px;width:12px;height:12px;border-radius:50%;background:var(--red);border:2px solid #fff;animation:fabblink 1.4s infinite}
@keyframes fabfloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@keyframes fabblink{0%,100%{opacity:1}50%{opacity:.25}}

/* ===== RESPONSIVE ===== */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .benefit-grid{grid-template-columns:repeat(2,1fr)}
  .app-grid{grid-template-columns:repeat(2,1fr)}
  .vip-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .news-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero h1{font-size:29px}
}
@media (max-width:768px){
  .req-wrap{grid-template-columns:1fr}
  .form-wrap{grid-template-columns:1fr}
  .rank-row{grid-template-columns:44px 1.5fr 1fr 96px}
  .rank-row .col-dl{display:none}
  section.block{padding:48px 0}
  .hero{padding:44px 0}
  .hero h1{font-size:25px}
  .sec-head h2{font-size:22px}
}
@media (max-width:520px){
  .brand-name{font-size:13px}
  .btn-signup{padding:9px 14px;font-size:13px}
  .btn-login{padding:8px 8px;font-size:13px}
  .benefit-grid{grid-template-columns:1fr}
  .app-grid{grid-template-columns:1fr}
  .vip-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .rank-row{grid-template-columns:40px 1.4fr 96px;font-size:13px}
  .rank-row .col-trend{display:none}
  .hero-stats{gap:18px}
  .hero-stat b{font-size:20px}
  .footer-grid{grid-template-columns:1fr}
  .btn-hero{width:100%;justify-content:center}
  .news-item .cat{display:none}
}

/* roulang page: article */
:root{
  --blue:#0b63d6;
  --blue-dark:#0a4ea8;
  --blue-deep:#093a7c;
  --blue-soft:#e8f1fd;
  --blue-line:#d3e3f8;
  --ink:#16293f;
  --ink-soft:#4c6280;
  --ink-faint:#7d90a8;
  --bg:#f5f8fc;
  --card:#ffffff;
  --gold:#f5a623;
  --green:#1a9e5c;
  --red:#e04545;
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:8px;
  --shadow-sm:0 2px 8px rgba(16,55,105,.07);
  --shadow-md:0 8px 24px rgba(16,55,105,.10);
  --shadow-lg:0 16px 40px rgba(16,55,105,.14);
  --container:1140px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:"Segoe UI","Helvetica Neue",Arial,"Noto Sans",sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.65;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--blue);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--blue-dark);}
ul{list-style:none;}
button{font-family:inherit;cursor:pointer;}
.container{max-width:var(--container);margin:0 auto;padding:0 22px;}

/* ===== Header ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:#ffffff;
  box-shadow:var(--shadow-sm);
  border-bottom:1px solid var(--blue-line);
}
.header-top{
  max-width:var(--container);margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:12px 22px;
}
.brand{display:flex;align-items:center;gap:12px;min-width:0;}
.brand-mark{
  width:44px;height:44px;flex:0 0 44px;border-radius:12px;
  background:linear-gradient(135deg,var(--blue) 0%,var(--blue-deep) 100%);
  color:#fff;font-weight:800;font-size:19px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(11,99,214,.35);
}
.brand-name{
  display:flex;flex-direction:column;line-height:1.2;
  font-weight:800;color:var(--ink);font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.brand-name small{font-weight:600;color:var(--blue);font-size:11.5px;letter-spacing:.4px;}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.btn-login{
  color:var(--blue-dark);font-weight:700;font-size:14px;padding:9px 14px;border-radius:var(--radius-sm);
}
.btn-login:hover{background:var(--blue-soft);color:var(--blue-deep);}
.btn-signup{
  background:linear-gradient(135deg,var(--blue) 0%,var(--blue-dark) 100%);
  color:#fff;font-weight:700;font-size:14px;padding:10px 20px;border-radius:999px;
  box-shadow:0 5px 14px rgba(11,99,214,.32);
  transition:transform .18s ease,box-shadow .18s ease;
}
.btn-signup:hover{color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(11,99,214,.42);}
.btn-signup:active{transform:translateY(0);}
.nav-tabs-row{background:#fff;border-top:1px solid #eef4fb;}
.nav-tabs{
  max-width:var(--container);margin:0 auto;padding:0 22px;
  display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;
}
.nav-tabs::-webkit-scrollbar{display:none;}
.nav-tabs a{
  padding:11px 18px;font-size:14.5px;font-weight:700;color:var(--ink-soft);
  border-bottom:3px solid transparent;white-space:nowrap;
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.nav-tabs a:hover{color:var(--blue);background:var(--blue-soft);}
.nav-tabs a.active{color:var(--blue);border-bottom-color:var(--blue);}

/* ===== Page banner ===== */
.article-banner{
  margin-top:106px;
  position:relative;
  background:url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
}
.article-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(9,42,88,.92) 0%,rgba(11,79,168,.82) 55%,rgba(11,99,214,.55) 100%);
}
.banner-inner{
  position:relative;max-width:var(--container);margin:0 auto;
  padding:64px 22px 58px;color:#fff;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:rgba(255,255,255,.75);margin-bottom:18px;
}
.breadcrumb a{color:rgba(255,255,255,.9);font-weight:600;}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb .sep{opacity:.55;}
.article-banner h1{
  font-size:34px;line-height:1.3;font-weight:800;max-width:840px;
  letter-spacing:-.2px;
}
.banner-meta{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;
}
.meta-chip{
  display:inline-flex;align-items:center;gap:7px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  backdrop-filter:blur(4px);
  color:#fff;font-size:13px;font-weight:600;
  padding:7px 14px;border-radius:999px;
}
.meta-chip svg{width:14px;height:14px;fill:currentColor;flex-shrink:0;}

/* ===== Main layout ===== */
.page-main{padding:48px 0 72px;}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;align-items:start;
}

/* Article card */
.article-card{
  background:var(--card);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-md);
  padding:42px 46px;
  min-width:0;
}
.article-lead{
  border-left:4px solid var(--blue);
  background:var(--blue-soft);
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  padding:18px 22px;margin-bottom:30px;
  color:var(--blue-deep);font-size:16.5px;font-weight:600;line-height:1.6;
}
.article-body{color:var(--ink);font-size:16.5px;}
.article-body h2{font-size:24px;margin:34px 0 14px;color:var(--ink);line-height:1.35;}
.article-body h3{font-size:19px;margin:28px 0 12px;color:var(--ink);}
.article-body p{margin:0 0 16px;color:#33475f;}
.article-body ul,.article-body ol{margin:0 0 18px 22px;color:#33475f;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:8px;}
.article-body img{border-radius:var(--radius-md);margin:20px 0;box-shadow:var(--shadow-sm);}
.article-body a{font-weight:600;border-bottom:1px dashed var(--blue);}
.article-body a:hover{border-bottom-style:solid;}
.article-body blockquote{
  margin:26px 0;padding:22px 26px;
  background:var(--blue-soft);border-left:4px solid var(--gold);
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  color:var(--blue-deep);font-style:italic;font-size:17px;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:20px 0;font-size:15px;
}
.article-body table th,.article-body table td{
  border:1px solid var(--blue-line);padding:10px 14px;text-align:left;
}
.article-body table th{background:var(--blue-soft);color:var(--blue-deep);font-weight:700;}

/* Not found */
.not-found{
  text-align:center;padding:60px 24px;
}
.not-found .nf-icon{
  width:76px;height:76px;margin:0 auto 22px;border-radius:50%;
  background:var(--blue-soft);display:flex;align-items:center;justify-content:center;
  font-size:34px;color:var(--blue);font-weight:800;
}
.not-found h2{font-size:24px;margin-bottom:12px;}
.not-found p{color:var(--ink-soft);margin-bottom:26px;}
.btn-back-home{
  display:inline-block;background:linear-gradient(135deg,var(--blue) 0%,var(--blue-dark) 100%);
  color:#fff;font-weight:700;padding:13px 32px;border-radius:999px;
  box-shadow:0 6px 16px rgba(11,99,214,.32);
  transition:transform .18s ease,box-shadow .18s ease;
}
.btn-back-home:hover{color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(11,99,214,.42);}

/* Article footer note */
.article-note{
  margin-top:36px;padding-top:26px;border-top:1px solid var(--blue-line);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
}
.trust-badges{display:flex;flex-wrap:wrap;gap:10px;}
.trust-badge{
  display:inline-flex;align-items:center;gap:7px;
  background:#f0f7ef;color:var(--green);border:1px solid #cde8d6;
  font-size:12.5px;font-weight:700;padding:6px 13px;border-radius:999px;
}
.trust-badge.blue{background:var(--blue-soft);color:var(--blue-dark);border-color:var(--blue-line);}
.trust-badge svg{width:13px;height:13px;fill:currentColor;}

/* ===== Sidebar ===== */
.article-aside{display:flex;flex-direction:column;gap:26px;position:sticky;top:126px;}
.aside-box{
  background:var(--card);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);padding:26px;
}
.aside-box h3{
  font-size:16.5px;font-weight:800;margin-bottom:16px;color:var(--ink);
  display:flex;align-items:center;gap:9px;
}
.aside-box h3::before{
  content:"";width:4px;height:18px;border-radius:2px;
  background:linear-gradient(180deg,var(--blue),var(--blue-dark));
}
.step-list{display:flex;flex-direction:column;gap:14px;}
.step-item{display:flex;gap:13px;align-items:flex-start;}
.step-num{
  width:28px;height:28px;flex:0 0 28px;border-radius:50%;
  background:var(--blue-soft);color:var(--blue-dark);
  font-size:13px;font-weight:800;display:flex;align-items:center;justify-content:center;
}
.step-item p{font-size:14px;color:var(--ink-soft);line-height:1.55;}
.step-item strong{display:block;color:var(--ink);font-size:14.5px;margin-bottom:2px;}
.aside-cover{border-radius:var(--radius-md);overflow:hidden;margin-bottom:16px;box-shadow:var(--shadow-sm);}
.aside-cover img{width:100%;height:150px;object-fit:cover;transition:transform .35s ease;}
.aside-box:hover .aside-cover img{transform:scale(1.04);}
.aside-links{display:flex;flex-direction:column;}
.aside-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 4px;font-size:14.5px;font-weight:600;color:var(--ink-soft);
  border-bottom:1px solid #eef4fb;
  transition:color .18s ease,padding-left .18s ease;
}
.aside-links a:last-child{border-bottom:none;}
.aside-links a:hover{color:var(--blue);padding-left:8px;}
.aside-links .arrow{color:var(--blue);font-weight:800;}
.aside-cta{
  background:linear-gradient(135deg,var(--blue) 0%,var(--blue-deep) 100%);
  color:#fff;text-align:left;
}
.aside-cta h3{color:#fff;}
.aside-cta h3::before{background:var(--gold);}
.aside-cta p{font-size:14px;color:rgba(255,255,255,.85);margin-bottom:18px;line-height:1.6;}
.aside-cta .btn-cta{
  display:block;text-align:center;background:#fff;color:var(--blue-dark);
  font-weight:800;padding:12px 20px;border-radius:999px;font-size:14.5px;
  box-shadow:0 6px 16px rgba(0,0,0,.18);
  transition:transform .18s ease,box-shadow .18s ease;
}
.aside-cta .btn-cta:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(0,0,0,.25);}
.aside-pay{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.aside-pay span{
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);
  color:#fff;font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px;
}

/* ===== Safety strip ===== */
.safety-strip{margin-top:52px;}
.safety-strip .strip-head{margin-bottom:24px;max-width:640px;}
.safety-strip h2{font-size:26px;font-weight:800;margin-bottom:10px;letter-spacing:-.2px;}
.safety-strip .strip-head p{color:var(--ink-soft);font-size:15.5px;}
.safety-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.safety-item{
  background:var(--card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
  padding:26px;transition:transform .2s ease,box-shadow .2s ease;
  border-top:3px solid var(--blue);
}
.safety-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.safety-item .s-icon{
  width:46px;height:46px;border-radius:12px;background:var(--blue-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.safety-item .s-icon svg{width:22px;height:22px;fill:var(--blue);}
.safety-item h3{font-size:16.5px;font-weight:800;margin-bottom:8px;}
.safety-item p{font-size:14px;color:var(--ink-soft);line-height:1.6;}

/* ===== FAQ ===== */
.faq-section{margin-top:52px;}
.faq-section h2{font-size:26px;font-weight:800;margin-bottom:8px;letter-spacing:-.2px;}
.faq-section .faq-sub{color:var(--ink-soft);font-size:15.5px;margin-bottom:24px;max-width:640px;}
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:860px;}
.faq-item{
  background:var(--card);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);
  overflow:hidden;border:1px solid transparent;transition:border-color .2s ease;
}
.faq-item[open]{border-color:var(--blue-line);box-shadow:var(--shadow-md);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;
  font-weight:700;font-size:15.5px;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--blue);}
.faq-item summary::after{
  content:"+";font-size:22px;font-weight:600;color:var(--blue);flex-shrink:0;
  transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item .faq-body{padding:0 22px 20px;font-size:14.5px;color:var(--ink-soft);line-height:1.65;}

/* ===== Bottom CTA ===== */
.bottom-cta{
  margin-top:56px;position:relative;border-radius:var(--radius-lg);overflow:hidden;
  background:url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
}
.bottom-cta::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(9,42,88,.94) 0%,rgba(11,79,168,.86) 100%);
}
.bottom-cta .cta-inner{
  position:relative;padding:52px 40px;text-align:center;color:#fff;
}
.bottom-cta h2{font-size:28px;font-weight:800;margin-bottom:12px;letter-spacing:-.2px;}
.bottom-cta p{max-width:620px;margin:0 auto 26px;color:rgba(255,255,255,.86);font-size:15.5px;}
.cta-buttons{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.cta-buttons .btn-android,.cta-buttons .btn-ios{
  display:inline-flex;align-items:center;gap:9px;
  font-weight:800;font-size:15px;padding:14px 30px;border-radius:999px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.cta-buttons .btn-android{
  background:#fff;color:var(--blue-dark);box-shadow:0 8px 20px rgba(0,0,0,.22);
}
.cta-buttons .btn-android:hover{transform:translateY(-3px);color:var(--blue-deep);}
.cta-buttons .btn-ios{
  background:transparent;color:#fff;border:2px solid rgba(255,255,255,.7);
}
.cta-buttons .btn-ios:hover{background:rgba(255,255,255,.12);transform:translateY(-3px);color:#fff;}

/* ===== FAB ===== */
.fab-support{
  position:fixed;left:16px;bottom:96px;z-index:1100;
  width:60px;height:60px;border-radius:50%;
  background:linear-gradient(135deg,var(--blue) 0%,var(--blue-deep) 100%);
  border:2px solid #cfe2fb;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 22px rgba(11,99,214,.4);
  opacity:.85;
  animation:fabFloat 3s ease-in-out infinite;
  transition:transform .2s ease,opacity .2s ease,box-shadow .2s ease;
}
.fab-support svg{width:26px;height:26px;fill:#fff;transition:transform .5s ease;}
.fab-support:hover{opacity:1;transform:scale(1.1);box-shadow:0 10px 28px rgba(11,99,214,.5);}
.fab-support:hover svg{transform:rotate(360deg);}
.fab-support:active{transform:scale(.95) translateY(2px);}
.fab-support .fab-dot{
  position:absolute;top:2px;right:2px;width:12px;height:12px;border-radius:50%;
  background:var(--red);border:2px solid #fff;animation:fabBlink 1.4s infinite;
}
@keyframes fabFloat{0%,100%{transform:translateY(0);}50%{transform:translateY(-6px);}}
@keyframes fabBlink{0%,100%{opacity:1;}50%{opacity:.35;}}

/* ===== Footer ===== */
.site-footer{
  margin-top:70px;background:#0c2c55;color:#c8d8ee;
}
.site-footer .container{padding-top:52px;padding-bottom:36px;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1.2fr 1fr;gap:36px;
}
.footer-brand .brand-mark{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.7;color:#a9bfdc;}
.site-footer h4{
  color:#fff;font-size:15px;font-weight:800;margin-bottom:16px;
  padding-bottom:10px;border-bottom:2px solid rgba(255,255,255,.12);
}
.site-footer ul li{margin-bottom:10px;}
.site-footer ul a{color:#a9bfdc;font-size:14px;transition:color .18s ease,padding-left .18s ease;}
.site-footer ul a:hover{color:#fff;padding-left:6px;}
.footer-pay{display:flex;flex-wrap:wrap;gap:9px;}
.footer-pay span{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  color:#dce8f8;font-size:12.5px;font-weight:700;padding:7px 14px;border-radius:999px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:18px 0;
}
.footer-bottom .container{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#8fa9cc;padding-top:0;padding-bottom:0;
}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .article-layout{grid-template-columns:1fr;}
  .article-aside{position:static;}
  .safety-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .article-banner h1{font-size:29px;}
  .article-card{padding:34px 32px;}
}
@media (max-width:768px){
  .article-banner{margin-top:100px;}
  .banner-inner{padding:46px 22px 42px;}
  .article-banner h1{font-size:25px;}
  .safety-grid{grid-template-columns:1fr;}
  .bottom-cta .cta-inner{padding:42px 24px;}
  .bottom-cta h2{font-size:23px;}
}
@media (max-width:520px){
  .brand-name{font-size:14px;}
  .brand-name small{font-size:10.5px;}
  .btn-signup{padding:9px 15px;font-size:13px;}
  .btn-login{padding:8px 10px;font-size:13px;}
  .article-card{padding:26px 20px;}
  .article-banner h1{font-size:21.5px;}
  .article-body{font-size:15.5px;}
  .article-body h2{font-size:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-buttons .btn-android,.cta-buttons .btn-ios{width:100%;justify-content:center;}
  .fab-support{width:52px;height:52px;bottom:84px;}
}

/* roulang page: category1 */
:root{
  --blue:#0b5ed7;
  --blue-dark:#0a4bb5;
  --blue-deep:#0d2b57;
  --blue-soft:#e8f1fd;
  --blue-line:#d3e2f7;
  --ink:#152238;
  --ink-soft:#4d5d76;
  --ink-mute:#7b8aa3;
  --bg:#f6f9fe;
  --white:#ffffff;
  --gold:#f5a623;
  --green:#1a9e5c;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 10px 30px rgba(13,43,87,.08);
  --shadow-lift:0 18px 44px rgba(13,43,87,.14);
  --container:1160px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Segoe UI","Helvetica Neue",Arial,"Noto Sans",sans-serif;background:var(--bg);color:var(--ink);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .2s ease}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}
.container{max-width:var(--container);margin:0 auto;padding:0 22px}

/* ===== Header ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:var(--white);box-shadow:0 2px 14px rgba(13,43,87,.08)}
.header-top{max-width:var(--container);margin:0 auto;padding:12px 22px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--blue),var(--blue-deep));color:#fff;font-weight:800;font-size:19px;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(11,94,215,.35);flex-shrink:0}
.brand-name{font-weight:800;font-size:17px;color:var(--blue-deep);line-height:1.25;display:flex;flex-direction:column}
.brand-name small{font-weight:600;font-size:12px;color:var(--blue);letter-spacing:.3px}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn-login{font-weight:600;font-size:14px;color:var(--blue-deep);padding:9px 14px;border-radius:9px;transition:background .2s}
.btn-login:hover{background:var(--blue-soft);color:var(--blue)}
.btn-signup{font-weight:700;font-size:14px;color:#fff;background:linear-gradient(135deg,var(--blue),var(--blue-dark));padding:10px 20px;border-radius:9px;box-shadow:0 6px 16px rgba(11,94,215,.32);transition:transform .2s,box-shadow .2s}
.btn-signup:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(11,94,215,.4)}
.btn-signup:active{transform:translateY(0)}
.nav-tabs-row{border-top:1px solid var(--blue-line);background:var(--white)}
.nav-tabs{max-width:var(--container);margin:0 auto;padding:0 22px;display:flex;gap:6px;overflow-x:auto;scrollbar-width:none}
.nav-tabs::-webkit-scrollbar{display:none}
.nav-tabs a{white-space:nowrap;padding:12px 18px;font-weight:600;font-size:14.5px;color:var(--ink-soft);border-bottom:3px solid transparent;transition:color .2s,border-color .2s}
.nav-tabs a:hover{color:var(--blue)}
.nav-tabs a.active{color:var(--blue);border-bottom-color:var(--blue)}

/* ===== Hero / Banner ===== */
.cat-hero{margin-top:118px;position:relative;background:linear-gradient(rgba(10,32,68,.82),rgba(10,32,68,.82)),url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;color:#fff;overflow:hidden}
.cat-hero .container{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;padding-top:72px;padding-bottom:72px}
.crumbs{font-size:13px;color:#a9c4ec;margin-bottom:16px}
.crumbs a{color:#cfe0fa;font-weight:600}
.crumbs a:hover{color:#fff}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:6px 16px;font-size:13px;font-weight:700;letter-spacing:.4px;margin-bottom:18px}
.hero-tag::before{content:"";width:8px;height:8px;border-radius:50%;background:#4ade80;box-shadow:0 0 8px #4ade80;animation:blink 1.6s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.35}}
.cat-hero h1{font-size:38px;line-height:1.22;font-weight:800;margin-bottom:16px}
.cat-hero h1 em{font-style:normal;color:#8ec2ff}
.cat-hero .lede{font-size:17px;color:#d6e4fa;max-width:560px;margin-bottom:26px}
.hero-cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.btn-primary{display:inline-flex;align-items:center;gap:10px;background:linear-gradient(135deg,#1d7bff,var(--blue-dark));color:#fff;font-weight:700;font-size:16px;padding:15px 30px;border-radius:12px;box-shadow:0 10px 26px rgba(29,123,255,.45);transition:transform .2s,box-shadow .2s}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(29,123,255,.55)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;color:#fff;font-weight:600;font-size:15px;padding:15px 24px;border-radius:12px;border:1.5px solid rgba(255,255,255,.45);transition:background .2s,border-color .2s}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;font-size:13.5px;color:#bcd3f2}
.hero-meta strong{display:block;font-size:20px;color:#fff;font-weight:800}
.hero-panel{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);border-radius:18px;padding:26px;backdrop-filter:blur(6px)}
.hero-panel h3{font-size:16px;font-weight:700;margin-bottom:16px;color:#e7f0ff}
.hp-step{display:flex;gap:14px;padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.18)}
.hp-step:last-child{border-bottom:none}
.hp-step .n{width:30px;height:30px;border-radius:50%;background:#1d7bff;color:#fff;font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px}
.hp-step b{display:block;font-size:14.5px;color:#fff}
.hp-step span{font-size:13px;color:#b9cef0}

/* ===== Sections ===== */
.section{padding:76px 0}
.section-alt{background:var(--white)}
.sec-head{max-width:640px;margin-bottom:44px}
.sec-kicker{display:inline-block;color:var(--blue);font-weight:800;font-size:13px;letter-spacing:1.5px;text-transform:uppercase;margin-bottom:10px}
.sec-head h2{font-size:30px;font-weight:800;line-height:1.28;color:var(--blue-deep);margin-bottom:12px}
.sec-head p{color:var(--ink-soft);font-size:16px}

/* value grid */
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.value-card{background:var(--white);border:1px solid var(--blue-line);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.value-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lift)}
.value-card .ic{width:52px;height:52px;border-radius:14px;background:var(--blue-soft);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px}
.value-card h3{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--blue-deep)}
.value-card p{font-size:14.5px;color:var(--ink-soft)}

/* app showcase */
.show-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:52px;align-items:center}
.show-media{position:relative}
.show-media img{border-radius:18px;box-shadow:var(--shadow-lift);width:100%;object-fit:cover}
.show-media .float-badge{position:absolute;bottom:-18px;right:-14px;background:var(--white);border-radius:14px;padding:14px 20px;box-shadow:var(--shadow-lift);display:flex;align-items:center;gap:12px;border:1px solid var(--blue-line)}
.show-media .float-badge .dot{width:12px;height:12px;border-radius:50%;background:var(--green);box-shadow:0 0 0 5px rgba(26,158,92,.15)}
.show-media .float-badge b{font-size:14px;color:var(--blue-deep)}
.show-media .float-badge span{display:block;font-size:12px;color:var(--ink-mute)}
.show-list{margin-top:8px}
.show-item{display:flex;gap:18px;padding:18px 0;border-bottom:1px solid var(--blue-line)}
.show-item:last-child{border-bottom:none}
.show-item .num{font-size:14px;font-weight:800;color:var(--blue);background:var(--blue-soft);width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:3px}
.show-item h3{font-size:16.5px;font-weight:700;color:var(--blue-deep);margin-bottom:5px}
.show-item p{font-size:14.5px;color:var(--ink-soft)}

/* requirements */
.req-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start}
.req-table{background:var(--white);border:1px solid var(--blue-line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.req-row{display:grid;grid-template-columns:200px 1fr;border-bottom:1px solid var(--blue-line)}
.req-row:last-child{border-bottom:none}
.req-row .k{background:var(--blue-soft);padding:16px 20px;font-weight:700;font-size:14px;color:var(--blue-deep)}
.req-row .v{padding:16px 20px;font-size:14.5px;color:var(--ink-soft)}
.req-side h3{font-size:20px;font-weight:800;color:var(--blue-deep);margin-bottom:12px}
.req-side p{font-size:15px;color:var(--ink-soft);margin-bottom:18px}
.check-list li{display:flex;gap:12px;align-items:flex-start;padding:9px 0;font-size:14.5px;color:var(--ink-soft)}
.check-list li::before{content:"✓";width:22px;height:22px;border-radius:50%;background:rgba(26,158,92,.12);color:var(--green);font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px}

/* reviews */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.review-card{background:var(--white);border:1px solid var(--blue-line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:14px;transition:transform .25s,box-shadow .25s}
.review-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lift)}
.stars{color:var(--gold);font-size:15px;letter-spacing:2px}
.review-card p{font-size:14.5px;color:var(--ink-soft);flex:1}
.review-who{display:flex;align-items:center;gap:12px}
.review-who .av{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--blue-deep));color:#fff;font-weight:800;font-size:15px;display:flex;align-items:center;justify-content:center}
.review-who b{display:block;font-size:14px;color:var(--blue-deep)}
.review-who span{font-size:12.5px;color:var(--ink-mute)}

/* FAQ */
.faq-wrap{max-width:820px}
.faq-item{background:var(--white);border:1px solid var(--blue-line);border-radius:var(--radius-sm);margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow)}
.faq-item summary{list-style:none;cursor:pointer;padding:19px 24px;font-weight:700;font-size:15.5px;color:var(--blue-deep);display:flex;justify-content:space-between;align-items:center;gap:14px;transition:background .2s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;font-weight:600;color:var(--blue);transition:transform .25s;flex-shrink:0}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item summary:hover{background:var(--blue-soft)}
.faq-item .faq-body{padding:0 24px 20px;font-size:14.5px;color:var(--ink-soft)}

/* CTA */
.cta-band{background:linear-gradient(rgba(10,43,90,.9),rgba(10,43,90,.92)),url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;color:#fff;text-align:center;padding:78px 0;border-radius:0}
.cta-band h2{font-size:30px;font-weight:800;margin-bottom:14px}
.cta-band p{font-size:16px;color:#cfe0f8;max-width:600px;margin:0 auto 30px}
.cta-band .hero-cta-row{justify-content:center;margin-bottom:0}
.cta-note{margin-top:20px;font-size:13px;color:#9fbde6}

/* ===== Footer ===== */
.site-footer{background:var(--blue-deep);color:#c6d6ee;padding-top:60px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:38px;padding-bottom:44px}
.footer-brand p{font-size:13.5px;line-height:1.7;margin-top:16px;color:#a9bfe0}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.site-footer ul li{margin-bottom:10px}
.site-footer ul a{font-size:13.5px;color:#a9bfe0;transition:color .2s}
.site-footer ul a:hover{color:#fff}
.footer-pay{display:flex;flex-wrap:wrap;gap:10px}
.footer-pay span{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:8px;padding:8px 14px;font-size:12.5px;font-weight:700;color:#e3edfb}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:20px 0}
.footer-bottom .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12.5px;color:#8fa9d2}

/* FAB */
.fab-support{position:fixed;left:16px;bottom:96px;z-index:90;display:flex;align-items:center;gap:10px;background:var(--white);border:1px solid var(--blue-line);border-radius:999px;padding:12px 20px 12px 14px;box-shadow:0 10px 28px rgba(11,94,215,.28);font-weight:700;font-size:14px;color:var(--blue-deep);opacity:.92;transition:transform .25s,box-shadow .25s,opacity .25s;min-height:48px}
.fab-support .fab-ic{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--blue-deep));display:flex;align-items:center;justify-content:center;font-size:16px;color:#fff}
.fab-support .fab-dot{position:absolute;top:6px;right:10px;width:9px;height:9px;border-radius:50%;background:#e5484d;animation:blink 1.4s infinite}
.fab-support:hover{transform:scale(1.06);opacity:1;box-shadow:0 14px 34px rgba(11,94,215,.4)}
.fab-support:active{transform:scale(.96)}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .cat-hero .container{grid-template-columns:1fr;gap:36px}
  .value-grid,.review-grid{grid-template-columns:repeat(2,1fr)}
  .show-wrap,.req-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .cat-hero{margin-top:112px}
  .cat-hero h1{font-size:29px}
  .sec-head h2,.cta-band h2{font-size:24px}
  .section{padding:56px 0}
  .brand-name{font-size:15px}
  .req-row{grid-template-columns:1fr}
  .req-row .k{padding:12px 20px 4px;background:transparent;color:var(--blue)}
  .req-row .v{padding:4px 20px 14px}
}
@media (max-width:520px){
  .header-top{padding:10px 14px}
  .brand-name small{display:none}
  .btn-login{padding:8px 10px}
  .btn-signup{padding:9px 14px}
  .value-grid,.review-grid{grid-template-columns:1fr}
  .cat-hero h1{font-size:25px}
  .hero-cta-row{flex-direction:column;align-items:stretch}
  .btn-primary,.btn-ghost{justify-content:center}
  .hero-meta{gap:16px}
  .fab-support span.fab-label{display:none}
  .fab-support{padding:12px}
}

/* roulang page: category3 */
:root{
  --blue:#0b5ed7;
  --blue-deep:#083f8f;
  --blue-soft:#e8f1fd;
  --blue-line:#cfe0f7;
  --ink:#152238;
  --ink-soft:#4a5a74;
  --muted:#7a8aa3;
  --bg:#f6f9fe;
  --white:#ffffff;
  --green:#1d9e5f;
  --amber:#f59f00;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 8px 30px rgba(11,94,215,.10);
  --shadow-lg:0 18px 50px rgba(8,63,143,.16);
  --font:"Be Vietnam Pro","Segoe UI",system-ui,-apple-system,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .2s ease}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}
.container{max-width:1180px;margin:0 auto;padding:0 24px}

/* ===== Header ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:var(--white);box-shadow:0 2px 18px rgba(8,63,143,.08)}
.header-top{max-width:1180px;margin:0 auto;padding:12px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--blue),var(--blue-deep));color:#fff;font-weight:800;font-size:19px;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(11,94,215,.35);flex-shrink:0}
.brand-name{font-weight:800;font-size:16px;line-height:1.2;color:var(--ink);display:flex;flex-direction:column}
.brand-name small{font-weight:600;font-size:11.5px;color:var(--blue);letter-spacing:.3px}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn-login{font-weight:700;font-size:14px;color:var(--blue);padding:9px 14px;border-radius:10px}
.btn-login:hover{background:var(--blue-soft)}
.btn-signup{font-weight:700;font-size:14px;color:#fff;background:linear-gradient(135deg,var(--blue),var(--blue-deep));padding:10px 20px;border-radius:10px;box-shadow:0 6px 16px rgba(11,94,215,.3);transition:transform .2s ease,box-shadow .2s ease}
.btn-signup:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(11,94,215,.4)}
.btn-signup:active{transform:translateY(0)}
.nav-tabs-row{border-top:1px solid var(--blue-line);background:var(--white)}
.nav-tabs{max-width:1180px;margin:0 auto;padding:0 24px;display:flex;gap:6px;overflow-x:auto;scrollbar-width:none}
.nav-tabs::-webkit-scrollbar{display:none}
.nav-tabs a{white-space:nowrap;font-weight:600;font-size:14.5px;color:var(--ink-soft);padding:13px 16px;border-bottom:3px solid transparent;transition:color .2s,border-color .2s}
.nav-tabs a:hover{color:var(--blue)}
.nav-tabs a.active{color:var(--blue);border-bottom-color:var(--blue);font-weight:700}

/* ===== Hero ===== */
.page-hero{padding:158px 0 70px;background:linear-gradient(180deg,#eaf3ff 0%,var(--bg) 100%);position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;top:-140px;right:-140px;width:480px;height:480px;border-radius:50%;background:radial-gradient(circle,rgba(11,94,215,.10),transparent 70%)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;position:relative}
.hero-crumb{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.hero-crumb a{color:var(--blue);font-weight:600}
.hero-crumb a:hover{text-decoration:underline}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--white);border:1px solid var(--blue-line);color:var(--blue);font-weight:700;font-size:13px;padding:7px 16px;border-radius:999px;box-shadow:var(--shadow);margin-bottom:20px}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--green);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(29,158,95,.5)}50%{box-shadow:0 0 0 6px rgba(29,158,95,0)}}
.page-hero h1{font-size:40px;line-height:1.22;font-weight:800;color:var(--ink);margin-bottom:18px;letter-spacing:-.5px}
.page-hero h1 span{color:var(--blue)}
.hero-lead{font-size:17px;color:var(--ink-soft);margin-bottom:28px;max-width:560px}
.hero-cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.btn-primary{display:inline-flex;align-items:center;gap:10px;background:linear-gradient(135deg,var(--blue),var(--blue-deep));color:#fff;font-weight:700;font-size:15.5px;padding:15px 30px;border-radius:12px;box-shadow:0 10px 26px rgba(11,94,215,.32);transition:transform .2s,box-shadow .2s}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(11,94,215,.42)}
.btn-primary:active{transform:translateY(-1px)}
.btn-outline{display:inline-flex;align-items:center;gap:10px;background:var(--white);color:var(--blue);border:1.5px solid var(--blue-line);font-weight:700;font-size:15.5px;padding:15px 28px;border-radius:12px;transition:border-color .2s,background .2s,transform .2s}
.btn-outline:hover{border-color:var(--blue);background:var(--blue-soft);transform:translateY(-2px)}
.hero-trust{display:flex;flex-wrap:wrap;gap:22px}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;color:var(--ink-soft)}
.hero-trust i{color:var(--green)}
.hero-visual{position:relative}
.hero-visual img{border-radius:var(--radius);box-shadow:var(--shadow-lg);border:1px solid var(--blue-line)}
.hero-float{position:absolute;background:var(--white);border-radius:12px;box-shadow:var(--shadow-lg);padding:12px 18px;display:flex;align-items:center;gap:10px;font-size:13px;font-weight:700;color:var(--ink)}
.hero-float i{font-size:20px}
.hero-float.f1{top:-16px;left:-22px;color:var(--green)}
.hero-float.f2{bottom:-16px;right:-14px}
.hero-float.f2 i{color:var(--blue)}
.hero-float small{display:block;font-weight:500;color:var(--muted);font-size:11.5px}

/* ===== Stat strip ===== */
.stat-strip{margin-top:-8px;padding:0 0 60px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-item{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px 24px;display:flex;flex-direction:column;gap:4px;border-top:3px solid var(--blue);transition:transform .25s,box-shadow .25s}
.stat-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.stat-item strong{font-size:28px;font-weight:800;color:var(--blue-deep)}
.stat-item span{font-size:13.5px;color:var(--ink-soft);font-weight:500}

/* ===== Sections ===== */
.section{padding:70px 0}
.section.alt{background:var(--white)}
.sec-head{max-width:640px;margin-bottom:44px}
.sec-eyebrow{display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:1.5px;text-transform:uppercase;color:var(--blue);margin-bottom:10px}
.sec-head h2{font-size:30px;font-weight:800;line-height:1.3;color:var(--ink);margin-bottom:12px;letter-spacing:-.3px}
.sec-head p{color:var(--ink-soft);font-size:15.5px}

/* Steps */
.steps-wrap{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.step-card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:30px;display:flex;gap:20px;transition:transform .25s,box-shadow .25s}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.step-num{width:48px;height:48px;flex-shrink:0;border-radius:14px;background:var(--blue-soft);color:var(--blue);font-weight:800;font-size:19px;display:flex;align-items:center;justify-content:center}
.step-card h3{font-size:17.5px;font-weight:700;margin-bottom:8px;color:var(--ink)}
.step-card p{font-size:14.5px;color:var(--ink-soft)}
.step-card .step-note{margin-top:10px;display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:700;color:var(--green);background:rgba(29,158,95,.08);padding:5px 12px;border-radius:999px}

/* OS split */
.os-split{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.os-panel{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:transform .25s,box-shadow .25s}
.os-panel:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.os-panel-head{display:flex;align-items:center;gap:14px;padding:24px 28px;border-bottom:1px solid var(--blue-line)}
.os-icon{width:48px;height:48px;border-radius:13px;display:flex;align-items:center;justify-content:center;font-size:23px;color:#fff}
.os-icon.android{background:linear-gradient(135deg,#2fb464,#1d9e5f)}
.os-icon.ios{background:linear-gradient(135deg,#3a3f4b,#151922)}
.os-panel-head h3{font-size:18px;font-weight:800}
.os-panel-head span{display:block;font-size:12.5px;font-weight:600;color:var(--muted)}
.os-body{padding:24px 28px 28px}
.os-body ol{list-style:none;counter-reset:os;display:flex;flex-direction:column;gap:14px;margin-bottom:22px}
.os-body ol li{counter-increment:os;position:relative;padding-left:38px;font-size:14.5px;color:var(--ink-soft)}
.os-body ol li strong{color:var(--ink)}
.os-body ol li::before{content:counter(os);position:absolute;left:0;top:1px;width:26px;height:26px;border-radius:8px;background:var(--blue-soft);color:var(--blue);font-size:13px;font-weight:800;display:flex;align-items:center;justify-content:center}
.os-cta{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:14px;color:var(--blue);border:1.5px solid var(--blue-line);padding:11px 20px;border-radius:11px;transition:background .2s,border-color .2s}
.os-cta:hover{background:var(--blue-soft);border-color:var(--blue)}

/* Verify block */
.verify-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:52px;align-items:center}
.verify-media{position:relative}
.verify-media img{border-radius:var(--radius);box-shadow:var(--shadow-lg);border:1px solid var(--blue-line)}
.verify-media .code-chip{position:absolute;bottom:-18px;left:24px;right:24px;background:var(--ink);color:#8fd9ff;font-family:"SFMono-Regular",Consolas,monospace;font-size:12px;padding:13px 18px;border-radius:12px;box-shadow:var(--shadow-lg);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.verify-media .code-chip b{color:#5eead4;font-weight:700}
.verify-list{display:flex;flex-direction:column;gap:22px}
.verify-item{display:flex;gap:18px}
.verify-icon{width:46px;height:46px;flex-shrink:0;border-radius:13px;background:var(--blue-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:19px}
.verify-item h3{font-size:16.5px;font-weight:700;margin-bottom:6px}
.verify-item p{font-size:14.5px;color:var(--ink-soft)}

/* Warning signs */
.warn-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.warn-card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px;border-left:4px solid var(--amber);transition:transform .25s,box-shadow .25s}
.warn-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.warn-card i{font-size:22px;color:var(--amber);margin-bottom:14px;display:inline-block}
.warn-card h3{font-size:16px;font-weight:700;margin-bottom:8px}
.warn-card p{font-size:14px;color:var(--ink-soft)}

/* Requirements */
.req-table{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.req-row{display:grid;grid-template-columns:220px 1fr 1fr;gap:0;border-bottom:1px solid var(--blue-line)}
.req-row:last-child{border-bottom:none}
.req-row > div{padding:18px 24px;font-size:14.5px}
.req-row.head{background:var(--blue-soft)}
.req-row.head > div{font-weight:800;font-size:14px;color:var(--blue-deep)}
.req-label{font-weight:700;color:var(--ink)}
.req-row > div:not(.req-label){color:var(--ink-soft)}

/* Reviews */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review-card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px;display:flex;flex-direction:column;gap:14px;transition:transform .25s,box-shadow .25s}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.stars{color:#f5b301;font-size:14px;letter-spacing:2px}
.review-card p{font-size:14.5px;color:var(--ink-soft);flex:1}
.reviewer{display:flex;align-items:center;gap:12px}
.avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--blue-deep));color:#fff;font-weight:800;font-size:15px;display:flex;align-items:center;justify-content:center}
.reviewer strong{font-size:14px;display:block}
.reviewer span{font-size:12px;color:var(--muted)}

/* FAQ */
.faq-wrap{max-width:820px}
.faq-item{background:var(--white);border-radius:var(--radius-sm);box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden}
.faq-item summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 26px;font-weight:700;font-size:15.5px;cursor:pointer;color:var(--ink);transition:color .2s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;color:var(--blue);transition:transform .25s;flex-shrink:0}
.faq-item[open] summary{color:var(--blue)}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-item .faq-body{padding:0 26px 22px;font-size:14.5px;color:var(--ink-soft)}

/* CTA */
.final-cta{background:linear-gradient(135deg,var(--blue-deep),var(--blue));border-radius:22px;padding:60px 48px;text-align:center;color:#fff;position:relative;overflow:hidden;box-shadow:var(--shadow-lg)}
.final-cta::before{content:"";position:absolute;top:-80px;left:-80px;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.08)}
.final-cta::after{content:"";position:absolute;bottom:-100px;right:-60px;width:300px;height:300px;border-radius:50%;background:rgba(255,255,255,.06)}
.final-cta h2{font-size:30px;font-weight:800;margin-bottom:14px;position:relative;letter-spacing:-.3px}
.final-cta p{max-width:600px;margin:0 auto 30px;color:#dbe9ff;font-size:15.5px;position:relative}
.cta-btns{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;position:relative}
.btn-white{display:inline-flex;align-items:center;gap:10px;background:#fff;color:var(--blue-deep);font-weight:800;font-size:15.5px;padding:15px 32px;border-radius:12px;box-shadow:0 10px 26px rgba(0,0,0,.2);transition:transform .2s,box-shadow .2s}
.btn-white:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(0,0,0,.28)}
.btn-ghost{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:15.5px;padding:15px 28px;border-radius:12px;border:1.5px solid rgba(255,255,255,.5);transition:background .2s,border-color .2s}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}

/* ===== Footer ===== */
.site-footer{background:#0d1b30;color:#b9c6da;margin-top:80px}
.site-footer .container{padding-top:56px;padding-bottom:36px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr .9fr;gap:40px}
.footer-brand .brand-mark{margin-bottom:16px}
.footer-brand p{font-size:13.5px;line-height:1.7;color:#93a4bd}
.site-footer h4{color:#fff;font-size:14.5px;font-weight:700;margin-bottom:16px}
.site-footer ul{display:flex;flex-direction:column;gap:10px}
.site-footer ul a{font-size:13.5px;color:#93a4bd}
.site-footer ul a:hover{color:#fff}
.footer-pay{display:flex;flex-wrap:wrap;gap:8px}
.footer-pay span{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);color:#dbe6f5;font-size:12px;font-weight:700;padding:7px 14px;border-radius:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1)}
.footer-bottom .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding:20px 24px;font-size:12.5px;color:#7f92ad}

/* ===== FAB ===== */
.fab-support{position:fixed;left:16px;bottom:96px;z-index:120;width:60px;height:60px;border-radius:50%;background:linear-gradient(135deg,#7c1f1f,#2b0f0f);border:2.5px solid #ffd700;box-shadow:0 4px 20px rgba(255,215,0,.3);display:flex;align-items:center;justify-content:center;color:#ffd700;font-size:24px;opacity:.72;animation:fabFloat 3s ease-in-out infinite;transition:transform .25s,opacity .25s}
.fab-support:hover{opacity:1;transform:scale(1.1)}
.fab-support:hover i{animation:fabSpin .6s ease}
.fab-support:active{transform:scale(.95) translateY(2px)}
.fab-support .fab-dot{position:absolute;top:2px;right:3px;width:11px;height:11px;border-radius:50%;background:#e11d48;border:2px solid #fff;animation:pulse 1.6s infinite}
@keyframes fabFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@keyframes fabSpin{from{transform:rotate(0)}to{transform:rotate(360deg)}}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:48px}
  .hero-visual{max-width:560px}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .warn-grid,.review-grid{grid-template-columns:repeat(2,1fr)}
  .verify-grid{grid-template-columns:1fr;gap:56px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .page-hero h1{font-size:34px}
}
@media (max-width:768px){
  .steps-wrap,.os-split{grid-template-columns:1fr}
  .req-row{grid-template-columns:1fr;border-bottom:none}
  .req-row > div{border-bottom:1px solid var(--blue-line)}
  .req-row.head{display:none}
  .req-label{background:var(--blue-soft);color:var(--blue-deep)}
  .brand-name{font-size:14px}
  .brand-name small{font-size:10.5px}
  .page-hero{padding-top:146px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .header-top{padding:10px 16px}
  .btn-signup{padding:9px 14px;font-size:13px}
  .btn-login{padding:8px 10px;font-size:13px}
  .brand-name{display:none}
  .page-hero h1{font-size:27px}
  .stat-grid,.warn-grid,.review-grid{grid-template-columns:1fr}
  .final-cta{padding:44px 24px}
  .final-cta h2{font-size:24px}
  .hero-float.f1{left:0}
  .hero-float.f2{right:0}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom .container{flex-direction:column}
  .sec-head h2{font-size:24px}
  .step-card{padding:24px;flex-direction:column;gap:14px}
}

/* roulang page: category2 */
:root{
  --blue-900:#0b2a52;
  --blue-800:#123c72;
  --blue-700:#1554a0;
  --blue-600:#1e6fd9;
  --blue-500:#2f86f6;
  --blue-100:#e3eefc;
  --blue-050:#f2f7fe;
  --ink:#10203a;
  --ink-soft:#4a5d78;
  --ink-mute:#75859c;
  --line:#dde6f2;
  --line-soft:#eaf1fa;
  --white:#ffffff;
  --bg:#f6f9fd;
  --amber:#f39c12;
  --green:#12a069;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow-xs:0 2px 6px rgba(16,32,58,.06);
  --shadow-sm:0 6px 18px rgba(16,32,58,.07);
  --shadow-md:0 14px 34px rgba(16,32,58,.10);
  --shadow-lg:0 26px 60px rgba(11,42,82,.16);
  --sp-1:6px;--sp-2:12px;--sp-3:18px;--sp-4:26px;--sp-5:38px;--sp-6:56px;--sp-7:84px;
  --font:'Be Vietnam Pro','Segoe UI',Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);background:var(--bg);color:var(--ink);
  font-size:16.5px;line-height:1.62;font-weight:400;padding-top:126px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--blue-700);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--blue-600)}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:3px solid rgba(47,134,246,.45);outline-offset:3px;border-radius:6px
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.24;color:var(--blue-900);letter-spacing:-.01em}
p{margin:0 0 var(--sp-2)}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 22px}

/* ============ HEADER ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:900;background:rgba(255,255,255,.96);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line);box-shadow:var(--shadow-xs)
}
.header-top{
  max-width:1200px;margin:0 auto;padding:14px 22px;display:flex;align-items:center;
  justify-content:space-between;gap:16px
}
.brand{display:flex;align-items:center;gap:12px;color:var(--blue-900)}
.brand:hover{color:var(--blue-800)}
.brand-mark{
  width:46px;height:46px;flex:0 0 46px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--blue-600),var(--blue-800));color:#fff;
  font-weight:800;font-size:18px;letter-spacing:.5px;box-shadow:0 8px 18px rgba(21,84,160,.32)
}
.brand-name{display:flex;flex-direction:column;font-weight:700;font-size:17px;line-height:1.2}
.brand-name small{font-weight:500;font-size:11.5px;color:var(--ink-mute);letter-spacing:.06em;text-transform:uppercase}
.header-actions{display:flex;align-items:center;gap:10px}
.btn-login{
  padding:10px 14px;font-weight:600;font-size:14.5px;color:var(--blue-800);border-radius:10px
}
.btn-login:hover{background:var(--blue-050)}
.btn-signup{
  padding:11px 22px;border-radius:11px;font-weight:700;font-size:14.5px;color:#fff;
  background:linear-gradient(135deg,var(--blue-600),var(--blue-800));
  box-shadow:0 10px 22px rgba(21,84,160,.30);transition:transform .18s ease,box-shadow .18s ease
}
.btn-signup:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 30px rgba(21,84,160,.36)}
.btn-signup:active{transform:translateY(0)}
.nav-tabs-row{border-top:1px solid var(--line-soft);background:linear-gradient(180deg,#fbfdff,#f2f7fe)}
.nav-tabs{
  max-width:1200px;margin:0 auto;padding:0 22px;display:flex;gap:8px;overflow-x:auto;
  border:0;scrollbar-width:none
}
.nav-tabs::-webkit-scrollbar{display:none}
.nav-tabs a{
  flex:0 0 auto;padding:14px 16px;font-size:15px;font-weight:600;color:var(--ink-soft);
  border-bottom:3px solid transparent;white-space:nowrap;transition:color .2s,border-color .2s,background .2s
}
.nav-tabs a:hover{color:var(--blue-700);background:rgba(47,134,246,.07)}
.nav-tabs a.active{color:var(--blue-800);border-bottom-color:var(--blue-600)}
.nav-tabs a:active{background:rgba(47,134,246,.14)}

/* ============ HERO ============ */
.hero{
  position:relative;padding:var(--sp-7) 0 var(--sp-6);
  background:
    linear-gradient(105deg,rgba(11,42,82,.90) 0%,rgba(18,60,114,.80) 46%,rgba(47,134,246,.55) 100%),
    url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
  color:#fff;overflow:hidden
}
.hero::after{
  content:"";position:absolute;inset:auto -80px -140px auto;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 62%);pointer-events:none
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;position:relative;z-index:2}
.hero h1,.hero h2,.hero h3{color:#fff}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.32);
  font-size:12.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase
}
.hero h1{font-size:clamp(29px,4vw,47px);margin:18px 0 16px;font-weight:800}
.hero-lead{font-size:17.5px;color:rgba(255,255,255,.90);max-width:610px;margin-bottom:24px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.fact{
  padding:9px 15px;border-radius:12px;background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.24);font-size:14px;font-weight:600
}
.fact i{margin-right:7px;color:#ffd479}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:15px 26px;
  border:0;border-radius:13px;font-family:var(--font);font-weight:700;font-size:15.5px;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .2s ease,color .2s ease
}
.btn-primary{background:linear-gradient(135deg,#2f86f6,#1554a0);color:#fff;box-shadow:0 14px 30px rgba(9,38,76,.38)}
.btn-primary:hover{color:#fff;transform:translateY(-3px);box-shadow:0 20px 40px rgba(9,38,76,.44)}
.btn-primary:active{transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.42)}
.btn-ghost:hover{background:rgba(255,255,255,.24);color:#fff;transform:translateY(-3px)}
.btn-outline{background:#fff;color:var(--blue-800);border:1.5px solid var(--line);box-shadow:var(--shadow-xs)}
.btn-outline:hover{color:var(--blue-700);border-color:var(--blue-500);transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.btn-amber{background:linear-gradient(135deg,#ffb648,#f39c12);color:#3c2405;box-shadow:0 14px 28px rgba(243,156,18,.34)}
.btn-amber:hover{color:#3c2405;transform:translateY(-3px)}
.btn-block{width:100%}

/* release panel */
.release-panel{
  background:rgba(255,255,255,.97);border-radius:var(--radius-lg);padding:24px;
  box-shadow:var(--shadow-lg);color:var(--ink)
}
.release-cover{position:relative;border-radius:var(--radius);overflow:hidden;margin-bottom:20px}
.release-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.release-cover .live-tag{
  position:absolute;top:12px;left:12px;padding:6px 12px;border-radius:999px;background:#e23b3b;
  color:#fff;font-size:12px;font-weight:700;letter-spacing:.05em;display:inline-flex;align-items:center;gap:7px
}
.live-tag span.dot{width:8px;height:8px;border-radius:50%;background:#fff;animation:blip 1.3s infinite}
@keyframes blip{0%,100%{opacity:1}50%{opacity:.25}}
.release-panel h2{font-size:19px;margin-bottom:6px}
.release-panel .sub{font-size:14px;color:var(--ink-soft);margin-bottom:18px}
.countdown{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:18px}
.cd-cell{background:var(--blue-050);border:1px solid var(--line-soft);border-radius:var(--radius-sm);padding:12px 6px;text-align:center}
.cd-cell strong{display:block;font-size:26px;font-weight:800;color:var(--blue-800);line-height:1.1;font-variant-numeric:tabular-nums}
.cd-cell span{font-size:11.5px;font-weight:600;color:var(--ink-mute);text-transform:uppercase;letter-spacing:.06em}
.notify-form{display:flex;gap:9px}
.notify-form input{
  flex:1;min-width:0;padding:13px 15px;border:1.5px solid var(--line);border-radius:12px;
  font-family:var(--font);font-size:14.5px;color:var(--ink);background:#fff;transition:border-color .2s,box-shadow .2s
}
.notify-form input::placeholder{color:var(--ink-mute)}
.notify-form input:focus{border-color:var(--blue-500);box-shadow:0 0 0 4px rgba(47,134,246,.14);outline:none}
.notify-form button{padding:13px 20px;border-radius:12px;font-size:14.5px}
.notify-hint{font-size:12.5px;color:var(--ink-mute);margin:12px 0 0}
.notify-ok{margin:10px 0 0;font-size:13.5px;font-weight:600;color:var(--green);display:none}
.notify-ok.show{display:block}

/* ============ SECTIONS ============ */
.section{padding:var(--sp-7) 0}
.section-alt{background:#fff;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.section-deep{background:linear-gradient(160deg,var(--blue-900),var(--blue-700));color:#fff}
.section-deep h2,.section-deep h3,.section-deep h4{color:#fff}
.section-head{max-width:760px;margin-bottom:var(--sp-5)}
.section-head.wide{max-width:900px}
.label{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.11em;text-transform:uppercase;
  color:var(--blue-600);margin-bottom:12px
}
.section-deep .label{color:#8ec4ff}
.section-head h2{font-size:clamp(24px,3vw,35px);margin-bottom:14px}
.section-head p{color:var(--ink-soft);font-size:16.5px;margin:0}
.section-deep .section-head p{color:rgba(255,255,255,.86)}
.divider{height:1px;background:var(--line);margin:var(--sp-5) 0}

/* value split */
.split{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:start}
.value-list{display:grid;gap:22px}
.value-item{display:grid;grid-template-columns:52px 1fr;gap:16px;align-items:start}
.v-ico{
  width:52px;height:52px;border-radius:15px;display:grid;place-items:center;font-size:20px;
  background:var(--blue-100);color:var(--blue-700)
}
.value-item h3{font-size:18.5px;margin-bottom:6px}
.value-item p{color:var(--ink-soft);font-size:15.5px;margin:0}
.side-figure{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);background:#fff}
.side-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.side-figure .cap{padding:18px 20px;font-size:14.5px;color:var(--ink-soft);border-top:1px solid var(--line-soft)}
.stat-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-top:26px}
.stat-strip div{background:#fff;padding:20px 18px}
.stat-strip strong{display:block;font-size:27px;font-weight:800;color:var(--blue-700);line-height:1.15}
.stat-strip span{font-size:13.5px;color:var(--ink-mute);font-weight:500}

/* screenshots carousel */
.shots{position:relative}
.shots-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 2px 22px;
  scrollbar-width:none
}
.shots-track::-webkit-scrollbar{display:none}
.shot{
  flex:0 0 300px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease
}
.shot:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:var(--blue-500)}
.shot img{width:100%;aspect-ratio:3/2;object-fit:cover}
.shot-body{padding:18px 18px 20px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:999px;font-size:12px;
  font-weight:700;background:var(--blue-100);color:var(--blue-800);margin-bottom:10px
}
.badge.green{background:#dcf5ea;color:#0b7a51}
.badge.amber{background:#fdf0d8;color:#8a5a04}
.shot-body h3{font-size:17px;margin-bottom:7px}
.shot-body p{font-size:14.5px;color:var(--ink-soft);margin:0}
.shots-nav{display:flex;gap:10px;justify-content:flex-end;margin-top:-6px}
.shots-nav button{
  width:46px;height:46px;border-radius:50%;background:#fff;border:1.5px solid var(--line);
  color:var(--blue-800);font-size:16px;cursor:pointer;box-shadow:var(--shadow-xs);
  transition:background .2s,border-color .2s,transform .18s
}
.shots-nav button:hover{background:var(--blue-050);border-color:var(--blue-500);transform:translateY(-2px)}
.shots-nav button:active{transform:translateY(0)}

/* requirements */
.req-wrap{display:grid;grid-template-columns:.92fr 1.08fr;gap:48px;align-items:start}
.req-list{display:grid;gap:0;border-top:1px solid rgba(255,255,255,.20)}
.req-row{display:grid;grid-template-columns:180px 1fr;gap:18px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.20)}
.req-row dt{font-size:14px;font-weight:700;color:#9fc8ff;letter-spacing:.02em}
.req-row dd{margin:0;font-size:15.5px;color:rgba(255,255,255,.92)}
.build-table{width:100%;border-collapse:separate;border-spacing:0;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.18);border-radius:var(--radius);overflow:hidden}
.build-table th,.build-table td{padding:14px 16px;text-align:left;font-size:14.5px;color:rgba(255,255,255,.92);
  border-bottom:1px solid rgba(255,255,255,.14)}
.build-table th{font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:#9fc8ff;background:rgba(0,0,0,.14)}
.build-table tr:last-child td{border-bottom:0}
.build-table td strong{color:#fff}
.pill{display:inline-block;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:700;
  background:rgba(255,255,255,.16);color:#fff}
.pill.on{background:#12a069}
.pill.warn{background:#f39c12;color:#3c2405}
.hash-note{margin-top:18px;font-size:13.5px;color:rgba(255,255,255,.78)}
.hash-code{
  display:block;margin-top:10px;padding:12px 14px;border-radius:12px;background:rgba(0,0,0,.26);
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px;color:#cfe4ff;word-break:break-all
}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:st}
.step{position:relative;padding:26px 22px 24px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow-xs);transition:box-shadow .22s,transform .22s}
.step:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.step::before{
  counter-increment:st;content:counter(st,decimal-leading-zero);display:block;font-size:26px;
  font-weight:800;color:var(--blue-500);margin-bottom:12px;line-height:1
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--ink-soft);margin:0}

/* reviews */
.reviews{columns:3;column-gap:22px}
.review{
  break-inside:avoid;margin:0 0 22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-xs);transition:box-shadow .22s,transform .22s
}
.review:hover{box-shadow:var(--shadow-sm);transform:translateY(-3px)}
.stars{color:#f5b323;font-size:14px;letter-spacing:2px;margin-bottom:10px}
.review p{font-size:15px;color:var(--ink-soft);margin-bottom:14px}
.reviewer{display:flex;align-items:center;gap:11px}
.avatar{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:14px;
  background:var(--blue-100);color:var(--blue-800)
}
.reviewer b{display:block;font-size:14.5px;color:var(--ink)}
.reviewer small{color:var(--ink-mute);font-size:12.5px}

/* faq */
.faq{max-width:900px}
.faq details{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;
  box-shadow:var(--shadow-xs);transition:border-color .2s,box-shadow .2s
}
.faq details[open]{border-color:var(--blue-500);box-shadow:var(--shadow-sm)}
.faq summary{
  list-style:none;cursor:pointer;padding:19px 56px 19px 22px;font-weight:600;font-size:16.5px;
  color:var(--blue-900);position:relative
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;right:22px;top:20px;
  font-size:13px;color:var(--blue-600);transition:transform .22s
}
.faq details[open] summary::after{content:"\f068"}
.faq summary:hover{color:var(--blue-700)}
.faq .answer{padding:0 22px 21px;color:var(--ink-soft);font-size:15.5px}

/* cta */
.cta{
  position:relative;text-align:center;padding:var(--sp-7) 22px;color:#fff;
  background:linear-gradient(115deg,rgba(11,42,82,.94),rgba(21,84,160,.86)),
             url('/assets/images/backpic/back-1.jpg') center/cover no-repeat
}
.cta h2{font-size:clamp(25px,3.2vw,37px);color:#fff;margin-bottom:14px}
.cta p{max-width:680px;margin:0 auto 28px;color:rgba(255,255,255,.90);font-size:17px}
.cta-buttons{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.cta-note{margin-top:22px;font-size:13.5px;color:rgba(255,255,255,.72)}

/* ============ FOOTER ============ */
.site-footer{background:#0a2247;color:rgba(255,255,255,.80);padding-top:var(--sp-6)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px;padding-bottom:var(--sp-5)}
.footer-brand .brand-mark{margin-bottom:16px}
.footer-brand p{font-size:14.5px;color:rgba(255,255,255,.70);margin:0;max-width:400px}
.site-footer h4{color:#fff;font-size:15.5px;margin-bottom:16px}
.site-footer ul li{margin-bottom:10px}
.site-footer ul a{color:rgba(255,255,255,.74);font-size:14.5px}
.site-footer ul a:hover{color:#8ec4ff}
.footer-pay{display:flex;flex-wrap:wrap;gap:9px}
.footer-pay span{
  padding:8px 13px;border-radius:10px;background:rgba(255,255,255,.09);
  border:1px solid rgba(255,255,255,.16);font-size:13px;font-weight:600;color:#fff
}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:20px 0;margin-top:6px}
.footer-bottom .container{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.60)}

/* ============ FAB ============ */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:950;display:inline-flex;align-items:center;gap:10px;
  min-width:48px;min-height:52px;padding:14px 20px 14px 16px;border-radius:999px;color:#fff;
  background:linear-gradient(135deg,#2f86f6,#1554a0);box-shadow:0 12px 30px rgba(21,84,160,.42);
  font-weight:700;font-size:14.5px;opacity:.92;transition:transform .2s ease,box-shadow .2s ease,opacity .2s ease
}
.fab i{font-size:18px}
.fab:hover{color:#fff;opacity:1;transform:scale(1.06) translateY(-2px);box-shadow:0 18px 40px rgba(21,84,160,.52)}
.fab:hover i{animation:spin360 .6s ease}
.fab:active{transform:scale(.96) translateY(1px)}
.fab .ping{position:absolute;top:8px;right:10px;width:10px;height:10px;border-radius:50%;
  background:#ff4d4d;box-shadow:0 0 0 3px rgba(255,77,77,.28);animation:blip 1.4s infinite}@keyframes spin360{from{transform:rotate(0)}to{transform:rotate(360deg)}}

/* ============ RESPONSIVE ============ */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .split{grid-template-columns:1fr;gap:38px}
  .req-wrap{grid-template-columns:1fr;gap:34px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .reviews{columns:2}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  body{padding-top:118px;font-size:16px}
  .header-top{padding:11px 16px}
  .brand-name{font-size:15.5px}
  .brand-name small{font-size:10.5px}
  .btn-signup{padding:10px 16px;font-size:13.5px}
  .btn-login{padding:9px 10px;font-size:13.5px}
  .section{padding:var(--sp-6) 0}
  .hero{padding:var(--sp-6) 0 var(--sp-5)}
  .stat-strip{grid-template-columns:1fr 1fr 1fr}
  .req-row{grid-template-columns:1fr;gap:5px;padding:13px 0}
  .build-table th,.build-table td{padding:11px 12px;font-size:13.5px}
}
@media (max-width:520px){
  body{padding-top:112px}
  .brand-name small{display:none}
  .hero h1{font-size:27px}
  .hero-cta .btn{width:100%}
  .countdown{grid-template-columns:repeat(4,1fr);gap:7px}
  .cd-cell strong{font-size:21px}
  .notify-form{flex-direction:column}
  .steps{grid-template-columns:1fr}
  .reviews{columns:1}
  .shot{flex-basis:82%}
  .stat-strip{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom .container{flex-direction:column;gap:8px}
  .fab{padding:13px 15px}
  .fab span.fab-text{display:none}
  .build-scroll{overflow-x:auto}
  .build-table{min-width:560px}
}