/* style-go881io.css — Layout B cho go881.io. Cùng palette Go88 (đen + VÀNG GOLD + đỏ) nhưng bố cục
   KHÁC go88kco: header 2 tầng (topbar gold), article 2 cột, archive 3 cột, home tab-lobby + slider. */
:root{
  --bg:#0b0905; --panel:#161009; --panel2:#110b06; --line:#2c2113;
  --brand:#ffc400; --brand-2:#e0a818; --brand-ink:#1a1200; --brand-soft:rgba(255,196,0,.12);
  --red:#c4221f; --red-2:#e23b2c;
  --ink:#f4ecda; --mut:#ad9870; --warn:#ffcf6b; --warn-bg:#241a08;
  --radius:12px; --maxw:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,Segoe UI,Roboto,Arial,sans-serif;line-height:1.7;font-size:16px}
a{color:var(--brand);text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 18px}
h1,h2,h3{line-height:1.25}
img{max-width:100%;height:auto;display:block}

/* ===== HEADER 2 TẦNG ===== */
header{position:sticky;top:0;z-index:40}
.topbar{background:linear-gradient(90deg,var(--brand-2),var(--brand));color:var(--brand-ink);font-size:13px;font-weight:600}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;padding:6px 18px;gap:12px}
.hmain{background:rgba(11,9,5,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.hmain .wrap{display:flex;align-items:center;gap:16px;padding:11px 18px}
.logo img{height:40px;width:auto;display:block}
nav.main{display:flex;gap:2px;flex-wrap:wrap;margin-left:6px}
nav.main a{color:var(--ink);padding:8px 12px;border-radius:8px;font-size:14px;font-weight:600;white-space:nowrap;transition:.15s}
nav.main a:hover{color:var(--brand-ink);background:var(--brand)}
.hdr-cta{display:flex;gap:9px;margin-left:auto}
.tb-link{color:var(--ink);border:1px solid var(--line);padding:9px 16px;border-radius:9px;font-weight:700;font-size:14px;white-space:nowrap}
.tb-link:hover{border-color:var(--brand);color:var(--brand)}
.tb-link.reg{background:linear-gradient(180deg,var(--red-2),var(--red));color:#fff;border-color:var(--red)}
.tb-link.reg:hover{filter:brightness(1.08)}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:6px}
.burger span{width:24px;height:2.5px;background:var(--brand);border-radius:2px;display:block}
.mnav-bg,.mnav{display:none}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:800;padding:13px 24px;border-radius:10px;font-size:15.5px;cursor:pointer}
.btn-main{background:linear-gradient(180deg,var(--brand),var(--brand-2));color:var(--brand-ink)}
.btn-main:hover{filter:brightness(1.08)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-red{background:linear-gradient(180deg,var(--red-2),var(--red));color:#fff}
.btn-red:hover{filter:brightness(1.08)}

/* ===== HERO (Layout B: banner full-width + overlay) ===== */
.hero-b{position:relative;border-bottom:2px solid var(--brand-2)}
.hero-b img.bg{width:100%;height:auto;display:block;max-height:460px;object-fit:cover}
.hero-ov{position:absolute;inset:0;display:flex;align-items:center;background:linear-gradient(90deg,rgba(11,9,5,.92) 30%,rgba(11,9,5,.35))}
.hero-ov .wrap{width:100%}
.hero-ov h1{font-size:34px;line-height:1.2;margin:0 0 12px;max-width:620px}
.hero-ov h1 b{color:var(--brand)}
.hero-ov .sapo{max-width:560px;color:#e8dcc2;font-size:16px;margin:0 0 18px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}

/* ===== TAB LOBBY (home) ===== */
.lobby{margin:14px 0 0}
.ltabs{display:flex;gap:8px;flex-wrap:wrap;border-bottom:1px solid var(--line);margin-bottom:18px}
.ltabs label{padding:10px 18px;border-radius:10px 10px 0 0;font-weight:700;color:var(--mut);cursor:pointer;border:1px solid transparent;border-bottom:none}
.lpanel{display:none}
input[name="lob"]{display:none}
/* 4 tab: hiện panel tương ứng + tô nhãn active */
#lob1:checked~.ltabs label[for="lob1"],#lob2:checked~.ltabs label[for="lob2"],#lob3:checked~.ltabs label[for="lob3"],#lob4:checked~.ltabs label[for="lob4"],#lob5:checked~.ltabs label[for="lob5"]{color:var(--brand-ink);background:var(--brand);border-color:var(--brand)}
#lob1:checked~.lpanels .lpanel:nth-child(1),#lob2:checked~.lpanels .lpanel:nth-child(2),#lob3:checked~.lpanels .lpanel:nth-child(3),#lob4:checked~.lpanels .lpanel:nth-child(4),#lob5:checked~.lpanels .lpanel:nth-child(5){display:block}
.lgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.lcard{display:flex;gap:13px;align-items:center;background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--brand);border-radius:10px;padding:11px;transition:.15s}
.lcard:hover{border-color:var(--brand);transform:translateY(-3px)}
.lcard img{width:96px;height:64px;object-fit:cover;border-radius:8px;flex:none}
.lcard b{color:var(--ink);font-size:14.5px;line-height:1.4}

/* ===== KHO GAME go881io: banner mainsite → archive (card ảnh nền + nhãn nổi) ===== */
.kgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.kcard{position:relative;border-radius:12px;overflow:hidden;border:1px solid var(--line);display:block;transition:.15s}
.kcard:hover{border-color:var(--brand);transform:translateY(-3px)}
.kcard img{width:100%;aspect-ratio:2/1;object-fit:cover;display:block}
.kcard .kc{position:absolute;left:0;right:0;bottom:0;padding:14px 16px;background:linear-gradient(0deg,rgba(11,9,5,.92),transparent)}
.kcard .kc b{color:#fff;font-size:17px;display:block}
.kcard .kc span{color:var(--brand);font-size:12.5px;font-weight:700}

/* ===== ĐIỂM CỘNG (why-grid) ===== */
.why-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.why{background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--brand);border-radius:12px;padding:14px 16px}
.why b{display:block;color:#fff;font-size:16px;margin-bottom:6px}
.why p{margin:0;color:#d9cba8;font-size:14.5px;line-height:1.65}
@media(max-width:640px){.why-grid{grid-template-columns:1fr}}

/* ===== SLIDER (home blog) ===== */
.slider{display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px;-webkit-overflow-scrolling:touch}
.slide{scroll-snap-align:start;flex:0 0 300px;background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:.15s}
.slide:hover{border-color:var(--brand)}
.slide img{width:100%;height:170px;object-fit:cover}
.slide .sb{padding:12px 14px}
.slide .cat{display:inline-block;font-size:11px;font-weight:800;color:var(--brand-ink);background:var(--brand);padding:2px 9px;border-radius:20px;margin-bottom:6px}
.slide b{color:var(--ink);font-size:14.5px;line-height:1.4;display:block}

/* partners */
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--panel2)}
.trust .wrap{display:flex;align-items:center;gap:24px;padding:16px 18px;flex-wrap:wrap;justify-content:center}
.trust b{color:var(--mut);font-size:13px;font-weight:700;letter-spacing:.5px;text-transform:uppercase}
.trust img{height:28px;width:auto;opacity:.85}.trust img:hover{opacity:1}

/* ===== SECTIONS ===== */
section{padding:34px 0}
.sectit{display:flex;align-items:center;gap:10px;font-size:24px;margin:0 0 6px}
.sectit::before{content:"";width:6px;height:24px;background:linear-gradient(180deg,var(--brand),var(--brand-2));border-radius:3px;display:inline-block}
.ac{color:var(--brand)}
.lead{color:var(--mut);margin:0 0 20px}
.warn{background:var(--warn-bg);border:1px solid #4a3712;border-left:4px solid var(--warn);border-radius:var(--radius);padding:18px 22px;margin:22px 0}
.warn h2{color:var(--warn);margin:0 0 6px;font-size:19px}.warn p{margin:0;color:#e8d6a8}
.provs{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin:6px 0 18px}
.provs img{height:34px;width:auto;opacity:.9}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:14px;list-style:none;padding:0;margin:18px 0 0}
.steps li{counter-increment:s;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;position:relative}
.steps li::before{content:counter(s);display:grid;place-items:center;width:30px;height:30px;background:linear-gradient(180deg,var(--brand),var(--brand-2));color:var(--brand-ink);border-radius:50%;font-weight:800;margin-bottom:10px}
.steps b{color:#fff;display:block;margin-bottom:4px}.steps p{margin:0;color:var(--mut);font-size:14px}
details{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-bottom:10px}
details summary{font-weight:700;cursor:pointer;color:#fff}
details p{margin:10px 0 0;color:#e3d6bd}
.entity{background:linear-gradient(180deg,var(--panel),var(--panel2));border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:var(--radius);padding:22px 24px}

/* ===== FOOTER 4 CỘT ===== */
footer{background:var(--panel2);border-top:1px solid var(--line);margin-top:30px;font-size:14px}
footer .wrap{padding:34px 18px}
.fcols{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:26px}
.fbrand img{height:40px;width:auto;margin-bottom:10px}.fbrand p{color:var(--mut);margin:0}
footer h4{color:#fff;margin:0 0 10px;font-size:15px}
footer a,footer p{color:var(--mut);display:block;padding:3px 0;margin:0}
footer a:hover{color:var(--brand)}
.badges-row{display:flex;gap:14px;align-items:center;flex-wrap:wrap;border-top:1px solid var(--line);margin-top:22px;padding-top:18px}
.badges-row img{height:38px;width:auto;opacity:.9}
.resp{color:var(--mut);border-top:1px solid var(--line);margin-top:18px;padding-top:16px;font-size:13px}
.age{display:inline-block;border:1.5px solid var(--warn);color:var(--warn);border-radius:50%;width:34px;height:34px;line-height:31px;text-align:center;font-weight:800;margin-right:10px;vertical-align:middle}
.sticky{display:none}

/* ===== ARTICLE 2 CỘT ===== */
.breadcrumb{font-size:13px;color:var(--mut);padding:16px 0 6px}
.breadcrumb a{color:var(--mut)}.breadcrumb a:hover{color:var(--brand)}
.post-grid{display:grid;grid-template-columns:1fr 310px;gap:32px;align-items:start;padding-bottom:20px}
.post{min-width:0}
.post h1{font-size:29px;margin:6px 0 8px}
.post .sapo{font-size:18px;color:#e3d6bd;margin:0 0 8px}
.post h2{font-size:22px;margin:32px 0 10px;color:#fff}
.post h2::before{content:"";display:inline-block;width:6px;height:19px;background:linear-gradient(180deg,var(--brand),var(--brand-2));border-radius:3px;margin-right:10px;vertical-align:-2px}
.post h3{font-size:18px;margin:22px 0 6px;color:var(--brand)}
.post p{margin:13px 0;color:#e3d6bd}
.post figure{margin:22px 0}
.post figure img{width:100%;border:1px solid var(--line);border-radius:var(--radius)}
.post figcaption{color:var(--mut);font-size:13px;text-align:center;margin-top:8px}
.mid-cta{background:linear-gradient(180deg,#1a1206,#110b06);border:1px solid var(--brand-2);border-radius:var(--radius);padding:22px 24px;margin:28px 0;text-align:center}
.mid-cta b{color:var(--brand);font-size:18px;display:block;margin-bottom:4px}
.mid-cta p{color:#e3d6bd;margin:0 0 14px}
.post-side{position:sticky;top:130px;display:flex;flex-direction:column;gap:16px}
.side-box{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px}
.side-box h3{margin:0 0 12px;font-size:16px;color:var(--ink)}
.side-cta{text-align:center}.side-cta b{display:block;margin-bottom:12px;color:var(--ink)}.side-cta .btn{width:100%;justify-content:center}
.side-rel a{display:block;padding:9px 4px;border-bottom:1px solid var(--line);color:var(--ink);font-size:14px;line-height:1.4}
.side-rel a:last-child{border-bottom:0}.side-rel a:hover{color:var(--brand)}

/* ===== ARCHIVE 3 CỘT (không sidebar) ===== */
.arch-hd{display:flex;align-items:center;justify-content:space-between;gap:18px;margin:8px 0 18px;flex-wrap:wrap}
.arch-hd h1{font-size:28px;margin:0 0 6px}
.agrid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding-bottom:8px}
.acard{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:.15s}
.acard:hover{border-color:var(--brand);transform:translateY(-3px)}
.acard img{width:100%;aspect-ratio:16/10;object-fit:cover;display:block}
.acard .ac-body{padding:12px 14px;display:flex;flex-direction:column;gap:6px}
.acard b{color:var(--ink);font-size:15px;line-height:1.4}
.acard .more{color:var(--brand);font-size:13px;font-weight:700}

/* caption review */
.qa{display:block;font-size:13px;line-height:1.45;color:#9aa3b2;font-style:italic;text-align:center;padding:8px 6px 0}

/* ===== RESPONSIVE ===== */
@media(max-width:960px){
  .lgrid{grid-template-columns:1fr 1fr}
  .agrid{grid-template-columns:1fr 1fr}
  .post-grid{grid-template-columns:1fr}.post-side{position:static;flex-direction:row;flex-wrap:wrap}.post-side .side-box{flex:1;min-width:240px}
  .steps{grid-template-columns:1fr 1fr}
  .fcols{grid-template-columns:1fr 1fr}
  .hero-ov h1{font-size:27px}
}
@media(max-width:760px){
  nav.main{display:none}
  .burger{display:flex}
  .hdr-cta{display:none}
  .topbar .tb-r{display:none}
  .hero-b img.bg{max-height:340px}
  .hero-ov{background:linear-gradient(180deg,rgba(11,9,5,.6),rgba(11,9,5,.9))}
  .mnav-bg{display:block;position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:60;opacity:0;visibility:hidden;transition:.2s}
  .mnav{display:flex;flex-direction:column;position:fixed;top:0;right:0;bottom:0;width:78%;max-width:300px;background:var(--panel);border-left:1px solid var(--line);z-index:61;padding:58px 18px 24px;transform:translateX(100%);transition:transform .25s ease;overflow-y:auto}
  .mnav a{color:var(--ink);padding:12px 8px;border-bottom:1px solid var(--line);font-weight:600}
  .mnav a:hover{color:var(--brand)}
  .mnav-x{position:absolute;top:14px;right:16px;font-size:22px;color:var(--mut);cursor:pointer;line-height:1}
  .mnav-tg:checked ~ .mnav{transform:translateX(0)}
  .mnav-tg:checked ~ .mnav-bg{opacity:1;visibility:visible}
  .sticky{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:50;gap:8px;padding:9px 12px;background:rgba(11,9,5,.97);border-top:1px solid var(--line)}
  .sticky .btn{flex:1;justify-content:center;padding:12px}
  body{padding-bottom:64px}
}
@media(max-width:560px){.lgrid{grid-template-columns:1fr}.agrid{grid-template-columns:1fr}.steps,.fcols{grid-template-columns:1fr}.lcard img{width:80px;height:56px}}

/* ===== partner row gọn (logo nhỏ native, không vỡ, gap rõ — hết lồng nhau) ===== */
.trust .wrap{gap:16px 28px;padding:18px;justify-content:center}
.trust img{height:28px;width:auto;opacity:.9;flex:none}

/* ===== hashtag footer ===== */
.ftags{display:flex;flex-wrap:wrap;gap:8px;border-top:1px solid var(--line);margin-top:22px;padding-top:18px}
.ftags a{color:var(--mut);background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:5px 12px;font-size:12.5px;font-weight:600;display:inline-block}
.ftags a:hover{color:var(--brand-ink);background:var(--brand);border-color:var(--brand)}

/* ===== HOME 9-3 (main | sidebar phải) — KHÁC go88kco (3-6-3) chống footprint ===== */
.home93{display:grid;grid-template-columns:1fr 310px;gap:30px;align-items:start;padding:10px 0}
.home93 .h-main{min-width:0}
.h-side{display:flex;flex-direction:column;gap:16px;position:sticky;top:130px}
.h-box{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:15px}
.h-box h3{margin:0 0 12px;font-size:15px;color:var(--ink);display:flex;align-items:center;gap:8px}
.h-box h3::before{content:"";width:5px;height:16px;background:linear-gradient(180deg,var(--brand),var(--brand-2));border-radius:3px}
.h-cta{text-align:center}
.h-cta .btn{width:100%;justify-content:center;margin-bottom:8px;padding:12px}
.h-cta .btn:last-child{margin-bottom:0}
.hot-nav{display:flex;flex-direction:column}
.hot-nav a{padding:9px 4px;border-bottom:1px solid var(--line);color:var(--ink);font-weight:600;font-size:14px;display:flex;justify-content:space-between}
.hot-nav a:last-child{border-bottom:0}.hot-nav a:hover{color:var(--brand)}
.hot-nav a span{color:var(--mut);font-weight:400}
.s-recent{display:flex;flex-direction:column;gap:11px}
.s-rc{display:flex;gap:10px;align-items:center}
.s-rc img{width:74px;height:50px;object-fit:cover;border-radius:7px;flex:none;border:1px solid var(--line)}
.s-rc b{font-size:13px;color:var(--ink);line-height:1.4;font-weight:600}.s-rc:hover b{color:var(--brand)}
.s-banner img{width:100%;border-radius:10px;border:1px solid var(--line);display:block}
.contact-pills{display:flex;flex-direction:column;gap:8px}
.contact-pills a{display:flex;align-items:center;gap:8px;color:var(--ink);background:var(--panel2);border:1px solid var(--line);border-radius:8px;padding:9px 12px;font-size:13.5px;font-weight:600}
.contact-pills a:hover{border-color:var(--brand);color:var(--brand)}
.home93 .h-main section:first-child{padding-top:6px}
@media(max-width:1000px){
  .home93{grid-template-columns:1fr}
  .h-side{position:static;flex-direction:row;flex-wrap:wrap}
  .h-side .h-box{flex:1;min-width:240px}
}
@media(max-width:560px){.h-side{flex-direction:column}.h-side .h-box{min-width:0}}