:root{
  --bg:#0a0a14;--bg2:#10101a;--card:rgba(22,22,37,.72);--card-solid:#12121e;--card-hover:#1a1a2e;
  --text:#e2e8f0;--heading:#fff;--muted:#94a3b8;--dim:#64748b;--line:rgba(255,255,255,.07);--line2:rgba(255,255,255,.12);
  --p:#6366f1;--p2:#8b5cf6;--cy:#22d3ee;--em:#10b981;--am:#f59e0b;--rose:#f43f5e;
  --r:18px;--head:68px;--side:278px
}
*{box-sizing:border-box;margin:0}
html{color-scheme:dark}
body{font-family:'Plus Jakarta Sans',system-ui,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.55;
  background-image:radial-gradient(900px 500px at 85% -10%,rgba(99,102,241,.16),transparent 60%),radial-gradient(700px 500px at 0% 100%,rgba(139,92,246,.10),transparent 60%);background-attachment:fixed}
a{color:inherit;text-decoration:none}
.ic{display:inline-flex;flex:none;line-height:0}.ic svg{display:block}
.sp{flex:1}
::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-thumb{background:rgba(255,255,255,.1);border-radius:8px}

/* ===== Header ===== */
.topbar{position:fixed;inset:0 0 auto 0;height:var(--head);display:flex;align-items:center;gap:10px;padding:0 22px 0 0;z-index:99;
  background:linear-gradient(rgba(10,10,20,.98),rgba(10,10,20,.82));backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.topbar:after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:linear-gradient(90deg,transparent,var(--p),var(--p2),var(--cy),transparent);opacity:.6}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px;letter-spacing:-.4px;width:var(--side);padding-left:22px;color:var(--heading)}
.brand-name{background:linear-gradient(90deg,#fff,#c7d2fe);-webkit-background-clip:text;background-clip:text;color:transparent}
.brand-name em{font-style:normal;background:linear-gradient(90deg,var(--p),var(--cy));-webkit-background-clip:text;background-clip:text;color:transparent}
.brand-logo{width:40px;height:40px;border-radius:13px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--p),var(--p2));box-shadow:0 0 22px rgba(99,102,241,.6),inset 0 1px 0 rgba(255,255,255,.3)}
.icon-btn{display:none;width:42px;height:42px;margin-left:14px;border:1px solid var(--line2);border-radius:12px;background:rgba(255,255,255,.04);color:var(--text);cursor:pointer;place-items:center}
.search{display:flex;align-items:center;gap:10px;width:360px;max-width:30vw;height:42px;padding:0 14px;border-radius:13px;background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--dim);transition:.2s}
.search:focus-within{background:rgba(99,102,241,.08);border-color:var(--p);box-shadow:0 0 0 4px rgba(99,102,241,.15);color:var(--p)}
.search input{flex:1;min-width:0;border:0;outline:0;background:none;font:inherit;color:var(--text)}
.search input::placeholder{color:var(--dim)}
.search kbd{font:700 11px 'Plus Jakarta Sans';padding:2px 8px;border-radius:7px;background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--muted)}
.chip{display:flex;align-items:center;gap:8px;height:42px;padding:0 14px;border-radius:13px;background:rgba(255,255,255,.04);border:1px solid var(--line);font-weight:600;color:var(--muted);white-space:nowrap;transition:.2s}
.chip:hover{border-color:var(--line2);background:rgba(255,255,255,.07)}
.chip b{color:var(--heading);font-weight:800}
.chip .ic{color:var(--am)}
.chip-vip{background:linear-gradient(135deg,rgba(245,158,11,.18),rgba(245,158,11,.06));border-color:rgba(245,158,11,.35);color:#fcd34d;font-weight:800}
.lang{cursor:pointer}.lang .ic{color:var(--muted)}
.flag{width:20px;height:14px;border-radius:3px;background:#da251d;position:relative;flex:none}
.flag:after{content:"★";position:absolute;inset:0;display:grid;place-items:center;color:#ff0;font-size:9px;line-height:1}
.wallet-pill{display:flex;align-items:center;gap:10px;height:46px;padding:0 6px;border-radius:15px;background:linear-gradient(135deg,rgba(16,185,129,.2),rgba(16,185,129,.05));border:1px solid rgba(16,185,129,.4);box-shadow:0 0 22px rgba(16,185,129,.12)}
.wp-ic{width:34px;height:34px;border-radius:11px;background:rgba(16,185,129,.2);color:#34d399;display:grid;place-items:center}
.wp-txt{display:flex;flex-direction:column;line-height:1.15;padding-right:2px}
.wp-txt small{font-size:10.5px;color:#6ee7b7;font-weight:600;text-transform:uppercase;letter-spacing:.05em}
.wp-txt b{font-size:14.5px;font-weight:800;color:#fff}
.wp-add{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,#10b981,#059669);box-shadow:0 4px 14px rgba(16,185,129,.4);transition:.25s}
.wp-add:hover{transform:rotate(90deg) scale(1.08)}
.icon-btn-r{position:relative;width:42px;height:42px;border:1px solid var(--line);border-radius:13px;background:rgba(255,255,255,.04);color:var(--muted);cursor:pointer;display:grid;place-items:center;transition:.2s}
.icon-btn-r:hover{color:#fff;border-color:var(--line2)}
.badge-dot{position:absolute;top:10px;right:11px;width:8px;height:8px;border-radius:50%;background:var(--rose);box-shadow:0 0 0 2px var(--bg),0 0 10px var(--rose)}
.divider{width:1px;height:28px;background:var(--line2);margin:0 4px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:42px;padding:0 20px;border-radius:13px;font-weight:700;cursor:pointer;transition:.2s;white-space:nowrap}
.btn-ghost{color:var(--text);background:rgba(255,255,255,.05);border:1px solid var(--line2)}.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-primary{color:#fff;background:linear-gradient(135deg,var(--p),var(--p2));box-shadow:0 6px 20px rgba(99,102,241,.5),inset 0 1px 0 rgba(255,255,255,.25)}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(99,102,241,.65)}

/* ===== Sidebar ===== */
.sidebar{position:fixed;top:var(--head);bottom:0;left:0;width:var(--side);background:linear-gradient(rgba(16,16,28,.98),rgba(12,12,22,.96));border-right:1px solid var(--line);
  backdrop-filter:blur(18px);overflow-y:auto;padding:16px 14px 28px;z-index:98;transition:transform .28s ease;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.12) transparent}
.side-user{display:flex;align-items:center;gap:12px;padding:14px;margin-bottom:10px;border-radius:18px;color:#fff;position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(99,102,241,.35),rgba(139,92,246,.18));border:1px solid rgba(139,92,246,.4);box-shadow:0 10px 30px rgba(99,102,241,.2)}
.side-user:after{content:"";position:absolute;right:-30px;top:-30px;width:110px;height:110px;border-radius:50%;background:radial-gradient(circle,rgba(167,139,250,.5),transparent 70%)}
.su-avatar{width:46px;height:46px;border-radius:15px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--p),var(--p2));box-shadow:0 0 18px rgba(99,102,241,.6);flex:none}
.su-info{display:flex;flex-direction:column;line-height:1.3;min-width:0;position:relative;z-index:1}
.su-info b{font-weight:800;font-size:15px}.su-info small{color:#c4b5fd;font-weight:600;white-space:nowrap}
.side-auth{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:6px}
.side-auth .btn{height:40px;padding:0}
.blk{margin-bottom:2px}
.grp{display:flex;align-items:center;justify-content:space-between;width:100%;border:0;background:none;cursor:pointer;font:800 11px 'Plus Jakarta Sans',sans-serif;text-transform:uppercase;letter-spacing:.12em;color:var(--dim);padding:18px 12px 8px;transition:.2s}
.grp:hover{color:#c4b5fd}
.grp .chev{transition:transform .25s}
.blk.closed .grp .chev{transform:rotate(-90deg)}
.blk.closed .blk-body{display:none}
.nav{position:relative;display:flex;align-items:center;gap:12px;padding:7px 12px 7px 7px;margin-bottom:2px;border-radius:14px;color:var(--muted);font-weight:600;transition:.2s;border:1px solid transparent}
.nav-ic{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;background:rgba(255,255,255,.05);color:var(--muted);transition:.2s;flex:none}
.nav-tx{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav:hover{background:rgba(255,255,255,.05);color:#fff}
.nav:hover .nav-ic{background:rgba(99,102,241,.2);color:#a5b4fc}
.nav.active{background:linear-gradient(90deg,rgba(99,102,241,.28),rgba(99,102,241,.06));border-color:rgba(99,102,241,.4);color:#fff;font-weight:800}
.nav.active:before{content:"";position:absolute;left:-15px;top:9px;bottom:9px;width:4px;border-radius:0 5px 5px 0;background:linear-gradient(var(--cy),var(--p));box-shadow:0 0 14px var(--p)}
.nav.active .nav-ic{background:linear-gradient(135deg,var(--p),var(--p2));color:#fff;box-shadow:0 0 16px rgba(99,102,241,.7)}
.nav.child{padding:7px 12px 7px 48px;font-weight:500;font-size:13.5px}
.nav.child .dot{position:absolute;left:25px;top:50%;width:7px;height:7px;margin-top:-3.5px;border-radius:50%;border:2px solid rgba(255,255,255,.18);transition:.2s}
.nav.child:hover .dot{border-color:var(--cy);background:var(--cy);box-shadow:0 0 10px var(--cy)}
.nav.child .nav-tx{flex:1;min-width:0}.nav.child .tag{flex:none}
.sub{display:flex;align-items:center;gap:9px;font-size:11.5px;font-weight:800;color:#cbd5e1;margin:12px 12px 4px;text-transform:uppercase;letter-spacing:.05em}
.sub .ic{width:24px;height:24px;border-radius:8px;background:rgba(99,102,241,.18);color:#a5b4fc;display:inline-grid;place-items:center}
.sub .ic svg{width:13px;height:13px}
.tag{margin-left:auto;font-size:9.5px;font-weight:800;padding:3px 8px;border-radius:99px;background:rgba(244,63,94,.16);color:#fb7185;border:1px solid rgba(244,63,94,.3);white-space:nowrap}
.tag.g{background:rgba(16,185,129,.16);color:#34d399;border-color:rgba(16,185,129,.3)}
.tag.y{background:rgba(245,158,11,.16);color:#fbbf24;border-color:rgba(245,158,11,.3)}
.side-card{margin-top:22px;padding:18px;border-radius:20px;color:#fff;display:flex;flex-direction:column;gap:2px;position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(99,102,241,.55),rgba(168,85,247,.4) 70%,rgba(236,72,153,.35));border:1px solid rgba(167,139,250,.4);box-shadow:0 12px 30px rgba(99,102,241,.25)}
.side-card:after{content:"";position:absolute;right:-30px;bottom:-30px;width:120px;height:120px;border-radius:50%;background:rgba(255,255,255,.12)}
.sc-ic{width:42px;height:42px;border-radius:13px;background:rgba(255,255,255,.18);display:grid;place-items:center;margin-bottom:8px}
.side-card small{opacity:.85}
.side-card a{margin-top:12px;align-self:flex-start;background:#fff;color:#4338ca;font-weight:800;font-size:12.5px;padding:8px 15px;border-radius:11px;position:relative;z-index:1}

/* ===== Main ===== */
main{margin:var(--head) 0 0 var(--side);padding:28px;min-height:calc(100vh - var(--head))}
.grid{display:grid;gap:16px}
.g4{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;backdrop-filter:blur(12px);transition:.25s;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.card:hover{border-color:rgba(99,102,241,.3);background:rgba(26,26,46,.78)}
.card h3{font-size:15px;font-weight:800;color:var(--heading);margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px}
.card h3 .ic{width:32px;height:32px;border-radius:10px;background:rgba(99,102,241,.18);color:#a5b4fc;display:inline-grid;place-items:center}
.card h3 a{margin-left:auto;font-size:13px;font-weight:700;color:#a5b4fc}
.card h3 a:hover{color:#fff}
.wallet{margin-bottom:16px;padding:26px;border-radius:22px;position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(135deg,rgba(79,70,229,.55),rgba(124,58,237,.4) 55%,rgba(192,38,211,.3));border:1px solid rgba(139,92,246,.45);box-shadow:0 20px 50px rgba(99,102,241,.25)}
.wallet:hover{background:linear-gradient(135deg,rgba(79,70,229,.55),rgba(124,58,237,.4) 55%,rgba(192,38,211,.3));border-color:rgba(167,139,250,.6)}
.wallet:before{content:"";position:absolute;right:-70px;top:-90px;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(167,139,250,.45),transparent 65%)}
.wallet-top{display:flex;justify-content:space-between;align-items:center;color:#c7d2fe;font-weight:700;text-transform:uppercase;font-size:12px;letter-spacing:.1em;position:relative}
.wallet-top a{background:linear-gradient(135deg,#10b981,#059669);color:#fff;padding:8px 18px;border-radius:99px;font-weight:800;text-transform:none;letter-spacing:0;font-size:13px;box-shadow:0 6px 18px rgba(16,185,129,.45);transition:.2s}
.wallet-top a:hover{transform:translateY(-1px)}
.wallet .big{font-size:46px;font-weight:800;margin:8px 0 18px;letter-spacing:-1.5px;position:relative;background:linear-gradient(180deg,#fff,#c7d2fe);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat{background:rgba(10,10,20,.35);border-radius:14px;padding:14px;position:relative;z-index:1;border:1px solid rgba(255,255,255,.1);backdrop-filter:blur(8px)}
.stat small{color:#a5b4fc;display:block;font-weight:600;font-size:12px}.stat b{font-size:19px;color:#fff}
.banner{position:relative;overflow:hidden;margin-bottom:16px;padding:26px;display:flex;flex-direction:column;align-items:flex-start;
  background:linear-gradient(135deg,rgba(139,92,246,.16),rgba(34,211,238,.07));border:1px solid rgba(139,92,246,.4);box-shadow:0 0 40px rgba(139,92,246,.12)}
.banner:after{content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(34,211,238,.18),transparent 65%)}
.banner h3{border:0;padding:0;margin:12px 0 6px;font-size:22px;background:linear-gradient(90deg,#fff 40%,#67e8f9);-webkit-background-clip:text;background-clip:text;color:transparent;display:block}
.pill-hot{display:inline-block;font-size:11px;font-weight:800;color:#fda4af;background:rgba(244,63,94,.14);border:1px solid rgba(244,63,94,.35);padding:4px 12px;border-radius:99px}
.banner .muted{color:#cbd5e1;position:relative}
.banner .b{display:inline-flex;align-items:center;gap:8px;margin-top:16px;background:linear-gradient(135deg,#0ea5e9,#0284c7);color:#fff;padding:10px 20px;border-radius:13px;font-weight:800;box-shadow:0 8px 22px rgba(14,165,233,.45);position:relative;z-index:1;transition:.2s}
.banner .b:hover{transform:translateY(-2px)}
.quick{grid-template-columns:repeat(4,1fr)}
.quick a{display:flex;flex-direction:column;align-items:center;gap:10px;padding:18px 8px;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:16px;font-weight:700;color:var(--text);transition:.25s}
.quick a .ic{width:42px;height:42px;border-radius:13px;background:rgba(99,102,241,.2);color:#a5b4fc;display:grid;place-items:center;transition:.25s}
.quick a:hover{border-color:rgba(99,102,241,.5);transform:translateY(-3px);background:rgba(99,102,241,.1)}
.quick a:hover .ic{background:linear-gradient(135deg,var(--p),var(--p2));color:#fff;box-shadow:0 0 18px rgba(99,102,241,.7)}
.list div{padding:13px 12px;margin:0 -12px;border-radius:12px;display:flex;align-items:center;gap:12px;transition:.2s}
.list div:hover{background:rgba(255,255,255,.04)}
.list .ic{color:#a5b4fc}
.muted{color:var(--muted)}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.steps div{display:flex;gap:14px;align-items:center;padding:16px;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:16px;font-weight:700;color:#fff}
.steps div:before{counter-increment:s;content:counter(s);flex:none;background:linear-gradient(135deg,var(--p),var(--p2));color:#fff;width:36px;height:36px;border-radius:12px;display:grid;place-items:center;font-weight:800;box-shadow:0 0 16px rgba(99,102,241,.6)}

/* ===== Footer ===== */
.footer{margin-left:var(--side);background:linear-gradient(rgba(10,10,20,.4),#07070f);border-top:1px solid var(--line);color:var(--muted);padding:40px 28px 20px;position:relative}
.footer:before{content:"";position:absolute;left:0;right:0;top:-1px;height:1px;background:linear-gradient(90deg,transparent,var(--p),var(--cy),transparent);opacity:.5}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px;max-width:1100px}
.footer .brand{margin-bottom:14px;width:auto;padding:0}
.footer p{max-width:340px}
.footer h4{color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.1em;margin-bottom:14px}
.footer a:not(.brand){display:flex;align-items:center;gap:9px;padding:6px 0;transition:.2s}
.footer a:not(.brand) .ic{color:#818cf8}
.footer a:not(.brand):hover{color:#fff;transform:translateX(4px)}
.foot-bottom{margin-top:30px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--dim)}

.backdrop{display:none}
@media(max-width:1280px){.search{width:240px}.chip-vip{display:none}}
@media(max-width:1180px){.quick{grid-template-columns:repeat(2,1fr)}}
@media(max-width:960px){
  .icon-btn{display:grid}
  .brand{width:auto;padding-left:0}
  .topbar{padding-left:0}
  .sidebar{transform:translateX(-100%);box-shadow:0 0 60px rgba(0,0,0,.6)}
  .sidebar.open{transform:none}
  .backdrop.show{display:block;position:fixed;inset:var(--head) 0 0 0;background:rgba(0,0,0,.6);backdrop-filter:blur(3px);z-index:97}
  main,.footer{margin-left:0}
  main{padding:16px}
  .hide-m{display:none!important}
  .foot-grid{grid-template-columns:1fr}
  .brand-name{font-size:16px}
  .g2{grid-template-columns:1fr}
  .wallet .big{font-size:36px}
}

/* ===== Fixes ===== */
:root{--side:292px}
html,body{overflow-x:hidden}
main{min-width:0}
.nav .nav-tx{flex:1;min-width:0}
.nav .tag{flex:none;margin-left:6px}
@media(max-width:960px){
  .topbar{gap:8px;padding-right:12px;overflow:hidden}
  .brand-name em{display:none}
  .brand-logo{width:36px;height:36px}
  .wallet-pill{height:42px;margin-left:auto}
  .wp-txt small{display:none}
  .wp-add{display:none}
  .sidebar{width:min(300px,86vw)}
  .wallet-top a{padding:6px 12px}
  .banner h3{font-size:18px}
}

/* ===== Sidebar v4 + đồng bộ header ===== */
:root{--chrome:#0d0d19;--chrome-line:rgba(255,255,255,.08);--side:280px}
.topbar{background:var(--chrome);backdrop-filter:none;border-bottom:1px solid var(--chrome-line)}
.topbar:after{display:none}
.sidebar{background:var(--chrome);border-right:1px solid var(--chrome-line);backdrop-filter:none;padding:14px 12px 24px}
.brand{height:100%;border-right:1px solid var(--chrome-line);margin-right:6px}
/* thẻ user */
.side-user{padding:12px;border-radius:16px;margin-bottom:10px}
.su-avatar{width:42px;height:42px;border-radius:13px}
/* nhóm */
.blk{margin-bottom:6px}
.grp{display:block;width:auto;padding:16px 10px 8px;font-size:10.5px;letter-spacing:.14em;color:#5b6483;cursor:default}
.grp:hover{color:#5b6483}
/* mục menu */
.nav{width:100%;padding:6px 10px 6px 6px;margin-bottom:2px;border-radius:12px;font:inherit;font-weight:600;color:#a3adc4;background:none;text-align:left;cursor:pointer}
a.nav{cursor:pointer}
.nav-ic{width:32px;height:32px;border-radius:10px;background:rgba(255,255,255,.05);color:#8b95b3}
.nav:hover{background:rgba(255,255,255,.05);color:#fff}
.nav.active{background:rgba(99,102,241,.16);border-color:rgba(99,102,241,.35)}
.nav.active:before{left:-12px}
/* accordion nền tảng */
.acc{margin-bottom:2px}
.acc-head{display:flex;align-items:center;gap:12px;border:1px solid transparent}
.acc-head .nav-tx{flex:1}
.acc-n{font-size:11px;font-weight:800;min-width:20px;height:20px;padding:0 6px;border-radius:99px;display:grid;place-items:center;background:rgba(255,255,255,.06);color:#8b95b3}
.acc-head .chev{color:#6b7494;transition:transform .25s}
.acc.open>.acc-head{background:rgba(255,255,255,.05);color:#fff}
.acc.open>.acc-head .nav-ic{background:linear-gradient(135deg,var(--p),var(--p2));color:#fff;box-shadow:0 0 14px rgba(99,102,241,.6)}
.acc.open>.acc-head .chev{transform:rotate(180deg);color:#fff}
.acc-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s ease}
.acc.open>.acc-body{grid-template-rows:1fr}
.acc-in{overflow:hidden;min-height:0;margin-left:22px;padding-left:14px;border-left:1px solid rgba(255,255,255,.1)}
.acc.open>.acc-body .acc-in{padding-top:4px;padding-bottom:6px}
.sub-link{display:flex;align-items:center;gap:8px;padding:8px 10px;margin-bottom:1px;border-radius:10px;font-size:13.5px;font-weight:500;color:#9aa4bf;transition:.18s}
.sub-link .nav-tx{flex:1;min-width:0}
.sub-link:hover{background:rgba(99,102,241,.14);color:#fff;padding-left:14px}
/* bỏ phần cũ không còn dùng */
.sub,.nav.child,.blk-body{display:none}
.side-card{margin-top:18px}