/* site.css — stylesheet DÙNG CHUNG cho gem88free (trang chủ + mọi trang con).
   Sửa 1 chỗ → đổi cả site. Palette gem88: nền đen + xanh lá neon. */
:root{
  --bg:#0a0f0d; --panel:#101814; --panel2:#0d1411; --line:#1d2a24;
  --brand:#19c46e; --brand-2:#0e7a44; --brand-ink:#062b18;
  --ink:#e9f2ec; --mut:#8fa89b; --warn:#ffcf6b; --warn-bg:#241d0c;
  --radius:14px; --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 CTA buttons */
.tb-link{color:var(--ink);border:1px solid var(--line);padding:8px 15px;border-radius:9px;font-weight:700;font-size:14px;white-space:nowrap}
.tb-link:hover{border-color:var(--brand)}
.tb-link.reg{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
.hdr-cta{display:flex;gap:8px;margin-left:14px}
/* header */
header{position:sticky;top:0;z-index:40;background:rgba(13,20,17,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;gap:12px;padding-top:12px;padding-bottom:12px}
.logo{display:flex;align-items:center;gap:8px;text-decoration:none;white-space:nowrap}
.logo img{height:34px;width:auto;display:block}
nav.main{margin-left:auto;display:flex;gap:1px;flex-wrap:wrap}
nav.main a{color:var(--ink);padding:7px 9px;border-radius:8px;font-size:13.5px;font-weight:600;white-space:nowrap;transition:color .15s,background .15s}
nav.main a:hover{color:var(--brand);background:rgba(25,196,110,.12)}
/* hero */
.hero{background:radial-gradient(1200px 380px at 50% -120px,rgba(25,196,110,.18),transparent),var(--panel2);border-bottom:1px solid var(--line)}
.hero .wrap{padding:46px 18px 40px;text-align:center}
.hero h1{font-size:34px;margin:0 0 14px}
.hero h1 b{color:var(--brand)}
.hero .sapo{max-width:760px;margin:0 auto 22px;color:#cfe0d7;font-size:17px}
.cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;padding:14px 26px;border-radius:12px;font-size:16px}
.btn-main{background:var(--brand);color:var(--brand-ink)}
.btn-main:hover{background:#1fe07e}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--brand)}
/* sections */
section{padding:40px 0}
section h2{font-size:24px;margin:0 0 6px}
section h2 .ac{color:var(--brand)}
.lead{color:var(--mut);margin:0 0 22px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px}
.warn{background:var(--warn-bg);border:1px solid #4a3c14;border-left:4px solid var(--warn);border-radius:var(--radius);padding:20px 24px}
.warn h2{color:var(--warn)}
.warn ul{margin:10px 0 0;padding-left:20px}.warn li{margin:6px 0;color:#e6d7ad}
.games{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.game{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .15s,border-color .15s}
.game:hover{transform:translateY(-3px);border-color:var(--brand)}
.game img{aspect-ratio:16/9;object-fit:cover;width:100%}
.game .gb{padding:13px 15px}
.game .gb b{color:#fff;font-size:16px}
.game .gb p{margin:3px 0 0;color:var(--mut);font-size:13.5px}
.grid2{display:grid;grid-template-columns:1.3fr 1fr;gap:20px}
.badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.badge{background:var(--panel2);border:1px solid var(--line);border-radius:20px;padding:5px 13px;font-size:13px;color:#bfe6d2}
.provs{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:10px}
.provs img{height:24px;width:auto;opacity:.82}.provs img:hover{opacity:1}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;list-style:none;padding:0;margin:0}
.steps li{counter-increment:s;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px 18px 56px;position:relative}
.steps li::before{content:counter(s);position:absolute;left:16px;top:18px;width:28px;height:28px;background:var(--brand);color:var(--brand-ink);border-radius:50%;display:grid;place-items:center;font-weight:800}
.steps b{color:#fff}
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:#cfe0d7}
.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 */
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:2fr 1fr 1fr;gap:24px}
footer h4{color:#fff;margin:0 0 10px;font-size:15px}
footer a{color:var(--mut);display:block;padding:3px 0}
footer a:hover{color:var(--brand)}
.resp{color:var(--mut);border-top:1px solid var(--line);margin-top:22px;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}

/* ============ TRANG CON / BÀI VIẾT ============ */
.breadcrumb{font-size:13px;color:var(--mut);padding:16px 0 0}
.breadcrumb a{color:var(--mut)}.breadcrumb a:hover{color:var(--brand)}
.post{max-width:840px;margin:0 auto;padding:8px 0 20px}
.post h1{font-size:30px;margin:14px 0 8px}
.post .sapo{font-size:18px;color:#cfe0d7;margin:0 0 8px}
.post h2{font-size:23px;margin:34px 0 10px;color:#fff}
.post h2::before{content:"";display:inline-block;width:6px;height:20px;background:var(--brand);border-radius:3px;margin-right:10px;vertical-align:-2px}
.post h3{font-size:18px;margin:24px 0 6px;color:var(--brand)}
.post p{margin:13px 0;color:#dce8e1}
.post figure{margin:24px 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:#0e1512;border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;margin:30px 0;text-align:center}
.mid-cta b{color:#fff;font-size:18px;display:block;margin-bottom:4px}
.mid-cta p{color:#9fb;margin:0 0 14px}
.related{border-top:1px solid var(--line);margin-top:36px;padding-top:20px}
.related h3{color:#fff;font-size:17px;margin:0 0 12px}
.related a{display:inline-block;background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:7px 14px;margin:0 6px 8px 0;font-size:14px;color:#cfe0d7}
.related a:hover{border-color:var(--brand);color:#fff}

@media(max-width:860px){
  .games,.steps{grid-template-columns:1fr 1fr}
  .grid2,.fcols{grid-template-columns:1fr}
  nav.main{display:none}
  .hdr-cta{margin-left:auto}
  .tb-link{padding:7px 12px;font-size:13px}
  header .wrap{gap:10px}
  .hero h1{font-size:27px}.post h1{font-size:25px}
  .sticky{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:50;gap:8px;padding:9px 12px;background:rgba(13,20,17,.97);border-top:1px solid var(--line)}
  .sticky .btn{flex:1;justify-content:center;padding:12px}
  body{padding-bottom:64px}
}
@media(max-width:520px){.games,.steps{grid-template-columns:1fr}}

/* ---- Caption = nội dung thẻ alt dưới ảnh (chỉ hiện khi REVIEW=True; production tắt) ---- */
.qa{display:block;font-size:13px;line-height:1.45;color:#9aa3b2;font-style:italic;text-align:center;padding:8px 6px 0}

/* hàng badge trust ở footer (đồng bộ trang chủ ↔ trang con) */
.badges-row{display:flex;gap:14px;align-items:center;flex-wrap:wrap;padding:16px 0 4px;border-top:1px solid var(--line);margin-top:10px}
.badges-row img{height:34px;width:auto;opacity:.85}

/* ===== BIẾN THỂ gem882uk: header 2 tầng + footer 4 cột + hero split + sidebar bài mới ===== */
.hdr-top{display:flex;align-items:center;justify-content:space-between;padding:12px 0}
.nav-bar{border-top:1px solid var(--line);background:rgba(13,20,17,.6)}
.nav-bar nav.main{display:flex;flex-wrap:wrap;gap:4px;justify-content:center;padding:6px 0}
.fcols4{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:24px}
.toc-box{background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:12px;padding:14px 18px;margin:18px 0}
.toc-box b{display:block;margin-bottom:6px;color:var(--ink)}
.toc-box ol{margin:0;padding-left:20px}
.toc-box a{color:var(--mut)}.toc-box a:hover{color:var(--brand)}

.hero-split{display:grid;grid-template-columns:1.3fr .9fr;gap:30px;align-items:center}
.hero-l h1{font-size:30px;line-height:1.25;margin:0 0 12px}.hero-l h1 b{color:var(--brand)}
.hero-r img{width:100%;border-radius:14px;border:1px solid var(--line);display:block}
.qa-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin-top:14px}
.qa-card b{color:var(--ink);font-size:16px}.qa-card p{color:var(--mut);margin:6px 0 12px;font-size:14px}
.qa-card .btn{width:100%;text-align:center}
.promo img{width:100%;border-radius:14px;border:1px solid var(--line);display:block;margin:6px 0 4px}

.home-wrap{display:grid;grid-template-columns:1fr 320px;gap:32px;align-items:start}
.home-main section{margin:30px 0}
.ac{color:var(--brand)}
.game-list{display:flex;flex-direction:column;gap:10px}
.grow{display:flex;gap:14px;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:10px 14px;transition:border-color .15s,transform .15s}
.grow:hover{border-color:var(--brand);transform:translateX(3px)}
.grow img{width:120px;height:80px;object-fit:cover;border-radius:8px;flex:none}
.grow b{color:var(--ink);font-size:16px}.grow p{color:var(--mut);margin:3px 0 0;font-size:13px}

.home-aside{position:sticky;top:90px;display:flex;flex-direction:column;gap:16px}
.side-box{background:var(--panel);border:1px solid var(--line);border-radius:14px;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:10px;color:var(--ink)}.side-cta .btn{width:100%}
.recent{display:flex;flex-direction:column;gap:12px}
.rc{display:flex;gap:10px;align-items:center}
.rc img{width:80px;height:56px;object-fit:cover;border-radius:8px;flex:none;border:1px solid var(--line)}
.rc span{font-size:13px;color:var(--ink);line-height:1.4;font-weight:600}.rc:hover span{color:var(--brand)}

@media(max-width:900px){.hero-split{grid-template-columns:1fr}.home-wrap{grid-template-columns:1fr}.fcols4{grid-template-columns:1fr 1fr}.home-aside{position:static}}
@media(max-width:560px){.fcols4{grid-template-columns:1fr}.grow img{width:90px;height:60px}}

/* ===== gem882uk v2: hero banner LỚN + blog-list to (bỏ sidebar) ===== */
.hero-split{grid-template-columns:1.05fr 1.1fr;gap:34px}
.hero-r img{width:100%;height:auto;border-radius:16px;border:1px solid var(--line);box-shadow:0 10px 40px rgba(0,0,0,.35);display:block}
.blog-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.brow{display:flex;gap:16px;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:12px;transition:border-color .15s,transform .15s}
.brow:hover{border-color:var(--brand);transform:translateY(-3px)}
.brow img{width:170px;height:108px;object-fit:cover;border-radius:10px;flex:none}
.brow .cat{display:inline-block;font-size:11px;font-weight:700;color:var(--brand-ink);background:var(--brand);padding:2px 9px;border-radius:20px;margin-bottom:6px}
.brow b{display:block;color:var(--ink);font-size:15px;line-height:1.4}
@media(max-width:900px){.blog-list{grid-template-columns:1fr}}
@media(max-width:560px){.brow img{width:120px;height:78px}}

/* mobile: ép hero về 1 cột (phải nằm SAU rule .hero-split v2 để thắng cascade) */
@media(max-width:900px){.hero-split{grid-template-columns:1fr}.hero-r img{max-height:240px;object-fit:cover}}

/* ===== archive: list card + sidebar phải ===== */
.arch-wrap{display:grid;grid-template-columns:1fr 300px;gap:30px;align-items:start;padding-top:6px}
.alist{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.acard2{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .15s,transform .15s}
.acard2:hover{border-color:var(--brand);transform:translateY(-3px)}
.acard2 img{width:100%;aspect-ratio:16/10;object-fit:cover;display:block}
.acard2 .ac-body{padding:12px 14px;display:flex;flex-direction:column;gap:6px}
.acard2 b{color:var(--ink);font-size:15px;line-height:1.4}
.acard2 .more{color:var(--brand);font-size:13px;font-weight:700}
.arch-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:16px}
.side-cats{display:flex;flex-direction:column}
.side-cats a{padding:9px 4px;border-bottom:1px solid var(--line);color:var(--ink)}
.side-cats a:last-child{border-bottom:0}.side-cats a:hover{color:var(--brand)}
@media(max-width:900px){.arch-wrap{grid-template-columns:1fr}.arch-side{position:static}}
@media(max-width:560px){.alist{grid-template-columns:1fr}}

/* hero không split: text giới hạn bề rộng cho dễ đọc */
.hero .hero-l{max-width:860px}

/* hero split 8|4: text 8 + banner 4 (banner mb hero, ratio ~2.1) */
.hero-split84{display:grid;grid-template-columns:8fr 4fr;gap:30px;align-items:center}
.hero-split84 .hero-l{max-width:none}
@media(max-width:900px){.hero-split84{grid-template-columns:1fr}}