:root{
  --bg:#03060b; --panel:rgba(8,18,28,.72); --line:rgba(0,255,200,.18);
  --cyan:#00f0ff; --green:#00ff9c; --pink:#ff2e88; --amber:#ffc23d;
  --text:#d8f6ff; --muted:#7ea3b3;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{min-height:100%}
body{background:var(--bg);color:var(--text);font-family:"Be Vietnam Pro",system-ui,sans-serif;overflow-x:hidden}
.mono{font-family:"JetBrains Mono",ui-monospace,monospace}
#bg{position:fixed;inset:0;width:100%;height:100%;z-index:0;opacity:.55}
.grid-overlay{position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:48px 48px;mask-image:radial-gradient(ellipse at center,#000 30%,transparent 75%);opacity:.35}
.scan{position:fixed;inset:0;z-index:1;pointer-events:none;
  background:repeating-linear-gradient(0deg,rgba(255,255,255,.025) 0 1px,transparent 1px 3px)}
.wrap{position:relative;z-index:2;max-width:760px;margin:0 auto;padding:28px 16px 120px}
.brand{display:flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.18em;color:var(--cyan)}
.brand .dot{width:10px;height:10px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
.brand .status{margin-left:auto;display:flex;align-items:center;gap:6px;color:var(--green);font-family:"JetBrains Mono",monospace;font-size:11px}
.brand .status i{width:7px;height:7px;border-radius:50%;background:var(--green);animation:blink 1.4s infinite}
@keyframes blink{50%{opacity:.2}}

.panel{position:relative;margin-top:28px;padding:36px 28px 28px;background:var(--panel);
  border:1px solid var(--line);border-radius:14px;backdrop-filter:blur(10px);
  box-shadow:0 0 0 1px rgba(0,240,255,.05),0 30px 80px rgba(0,0,0,.6),inset 0 0 60px rgba(0,240,255,.04)}
.corner{position:absolute;width:18px;height:18px;border:2px solid var(--cyan)}
.corner.tl{top:-1px;left:-1px;border-right:0;border-bottom:0;border-radius:14px 0 0 0}
.corner.tr{top:-1px;right:-1px;border-left:0;border-bottom:0;border-radius:0 14px 0 0}
.corner.bl{bottom:-1px;left:-1px;border-right:0;border-top:0;border-radius:0 0 0 14px}
.corner.br{bottom:-1px;right:-1px;border-left:0;border-top:0;border-radius:0 0 14px 0}

h1{font-family:"Orbitron",sans-serif;font-weight:800;font-size:clamp(28px,7vw,44px);letter-spacing:.08em;text-align:center;
  background:linear-gradient(90deg,var(--cyan),var(--green));-webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 0 14px rgba(0,240,255,.35))}
.logo-tile{position:relative;width:230px;height:92px;margin:0 auto 22px;border-radius:14px;background:#fff;overflow:hidden;
  box-shadow:0 0 0 1px rgba(255,46,136,.5),0 0 28px rgba(255,46,136,.45),0 0 60px rgba(0,240,255,.2);animation:pulse 3s ease-in-out infinite}
.logo-tile img{width:100%;height:100%;object-fit:cover;object-position:center;transform:scale(1.15)}
.logo-tile::after{content:"";position:absolute;top:0;left:-60%;width:35%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.75),transparent);transform:skewX(-20deg);animation:shine 3.2s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 1px rgba(255,46,136,.8),0 0 40px rgba(255,46,136,.65),0 0 80px rgba(0,240,255,.3)}}
.glitch{position:relative}
h1 .br{color:var(--green);-webkit-text-fill-color:var(--green)}
h1{animation:flick 6s infinite}
@keyframes flick{0%,92%,100%{opacity:1}93%{opacity:.4}94%{opacity:1}96%{opacity:.6}97%{opacity:1}}
.glitch::before,.glitch::after{content:attr(data-text);position:absolute;inset:0;pointer-events:none;opacity:0;
  -webkit-text-fill-color:currentColor;background:none}
.glitch::before{color:var(--pink);animation:g1 5s infinite}
.glitch::after{color:var(--cyan);animation:g2 5s infinite}
@keyframes g1{0%,94%,100%{opacity:0;transform:none}95%{opacity:.7;transform:translate(-3px,1px);clip-path:inset(20% 0 55% 0)}96%{opacity:.7;transform:translate(3px,-1px);clip-path:inset(60% 0 10% 0)}}
@keyframes g2{0%,95%,100%{opacity:0;transform:none}96%{opacity:.7;transform:translate(3px,0);clip-path:inset(10% 0 70% 0)}97%{opacity:.7;transform:translate(-2px,1px);clip-path:inset(45% 0 30% 0)}}
.checks{list-style:none;margin:22px auto 0;max-width:520px;display:grid;gap:12px}
.checks li{display:flex;align-items:center;gap:12px;font-weight:700;font-size:16px}
.checks i{flex:0 0 26px;height:26px;border-radius:7px;background:linear-gradient(135deg,#17d36b,#00b85a);
  box-shadow:0 0 14px rgba(0,255,156,.45);position:relative}
.checks i::after{content:"";position:absolute;left:9px;top:4px;width:7px;height:13px;border:solid #fff;border-width:0 3px 3px 0;transform:rotate(45deg)}
.sub{text-align:center;color:var(--muted);margin-top:8px;font-size:15px}

.term{margin:24px 0 8px;min-height:132px;padding:14px 16px;border-radius:10px;background:rgba(0,0,0,.55);
  border:1px solid rgba(0,255,156,.15);font-family:"JetBrains Mono",monospace;font-size:13px;line-height:1.8;color:var(--green)}
.term .l{white-space:pre-wrap;word-break:break-word}
.term .l .k{color:var(--muted)}
.term .l .v{color:var(--cyan)}
.term .l .bad{color:var(--amber)}
.term .cur{display:inline-block;width:8px;height:14px;background:var(--green);vertical-align:-2px;animation:blink 1s infinite}

.result{margin-top:18px;text-align:center;animation:rise .5s ease}
@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.chip{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;font-weight:700;font-size:14px}
.chip svg{width:18px;height:18px;fill:currentColor}
.chip.ok{color:var(--green);background:rgba(0,255,156,.08);border:1px solid rgba(0,255,156,.35)}
.chip.warn{color:var(--amber);background:rgba(255,194,61,.08);border:1px solid rgba(255,194,61,.35)}
.hint{margin:14px auto 0;max-width:460px;color:var(--text);line-height:1.6}
.btn{position:relative;display:flex;align-items:center;justify-content:center;gap:10px;margin:22px auto 0;max-width:380px;
  padding:16px 20px;border-radius:12px;text-decoration:none;color:#00131a;font-family:"Orbitron",sans-serif;font-weight:800;letter-spacing:.12em;
  background:linear-gradient(90deg,var(--cyan),var(--green));box-shadow:0 0 24px rgba(0,240,255,.45),0 0 60px rgba(0,255,156,.2);
  overflow:hidden;transition:transform .15s}
.btn:hover{transform:translateY(-2px)}
.btn svg{width:20px;height:20px;fill:currentColor}
.btn::after{content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.6),transparent);transform:skewX(-20deg);animation:shine 2.6s infinite}
@keyframes shine{to{left:130%}}
.row{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;max-width:380px;margin:14px auto 0}
.small{font-size:12px;color:var(--muted)}
.small b{color:var(--cyan)}
.ghost{background:transparent;color:var(--cyan);border:1px solid rgba(0,240,255,.4);border-radius:8px;padding:7px 12px;
  font:inherit;font-size:13px;cursor:pointer}
.ghost:hover{background:rgba(0,240,255,.08)}

.tips{list-style:none;margin-top:26px;padding-top:18px;border-top:1px dashed rgba(126,163,179,.25);display:grid;gap:8px}
.tips li{position:relative;padding-left:22px;color:var(--muted);font-size:13.5px}
.tips li::before{content:"›";position:absolute;left:6px;color:var(--cyan);font-weight:700}

.sys{position:fixed;left:0;right:0;bottom:0;z-index:3;display:flex;flex-wrap:wrap;justify-content:center;gap:6px 22px;
  padding:11px 16px;font-size:13px;font-weight:700;color:#fff;
  background:linear-gradient(90deg,#4a0010,#a1001f 30%,#a1001f 70%,#4a0010);border-top:1px solid #ff2e55;
  box-shadow:0 -6px 30px rgba(255,30,70,.35)}
.sys span{display:inline-flex;align-items:center;gap:6px}
.sys svg{width:15px;height:15px;fill:#fff}
.sys b{color:#9dffcf;font-weight:700}

@media (max-width:520px){
  .panel{padding:28px 16px 22px}
  .term{font-size:12px}
  .checks li{font-size:14px}
  .sys{font-size:11.5px;gap:4px 14px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important}}

/* ===== v4: luoi trang ===== */
.wrap.wide{max-width:1040px}
.hero{text-align:center;margin-top:34px}
.hero .checks{text-align:left}
.hero .term{max-width:640px;margin:24px auto 0;text-align:left;min-height:0}
.sites{position:relative;margin-top:28px;padding:20px;background:var(--panel);border:1px solid var(--line);border-radius:16px;
  backdrop-filter:blur(8px);box-shadow:0 30px 80px rgba(0,0,0,.55)}
.sites-head{display:flex;justify-content:space-between;font-size:12px;letter-spacing:.14em;color:var(--muted);margin:0 4px 14px}
.sites-head b{color:var(--pink)}
.tiles{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.tile{position:relative;padding:12px;border-radius:14px;background:#0a121c;border:1px solid #17263a;cursor:pointer;
  transition:transform .15s,border-color .15s,box-shadow .15s;font:inherit}
.tile:hover{transform:translateY(-3px);border-color:#2a4561;box-shadow:0 10px 24px rgba(0,0,0,.5)}
.plate{display:flex;align-items:center;justify-content:center;height:64px;border-radius:8px;overflow:hidden;
  border:1px solid rgba(255,255,255,.18);box-shadow:inset 0 1px 0 rgba(255,255,255,.25),inset 0 -8px 16px rgba(0,0,0,.25)}
.nm{font-family:"Be Vietnam Pro",sans-serif;font-weight:800;font-size:clamp(15px,2.3vw,24px);letter-spacing:.02em;color:#fff;
  text-shadow:0 2px 0 rgba(0,0,0,.35),0 0 12px rgba(255,255,255,.15);white-space:nowrap}
.c1{background:linear-gradient(180deg,#fff,#e6ecf5)}.c1 .nm{color:#1749c9;text-shadow:none}
.c2{background:linear-gradient(180deg,#3a1d08,#1a0d03);border-color:#d4a03a}.c2 .nm{color:#ffcf5a}
.c3{background:linear-gradient(180deg,#5a2e06,#2b1503);border-color:#c98a2a}.c3 .nm{color:#ffd23f}
.c4{background:linear-gradient(180deg,#ff2a3a,#c50f1f)}
.c5{background:linear-gradient(180deg,#8a0a12,#3d0307);border-color:#f2b33d}.c5 .nm{color:#ffd56a}
.c6{background:linear-gradient(180deg,#1257c9,#0a2f7a)}
.c7{background:linear-gradient(180deg,#0d5a46,#06291f)}.c7 .nm{color:#ffe08a}
.c8{background:linear-gradient(180deg,#ff6a1a,#d23d05)}
.c9{background:linear-gradient(180deg,#0e7d86,#064248)}.c9 .nm{color:#ffe36b}
.c10{background:linear-gradient(180deg,#1d2fa8,#0c1460)}.c10 .nm{color:#ffd23f}
.c11{background:linear-gradient(180deg,#6a2bd8,#3a0f8f)}.c11 .nm{color:#ffe36b}
.lock{position:absolute;top:6px;right:6px;width:20px;height:20px;border-radius:6px;display:grid;place-items:center;
  background:rgba(0,0,0,.6);opacity:.75}
.lock svg{width:12px;height:12px;fill:#9fb3c8}
.tile.xx8{border-color:var(--pink);background:linear-gradient(180deg,#1a0b14,#0a121c);
  box-shadow:0 0 0 1px rgba(255,46,136,.6),0 0 26px rgba(255,46,136,.5);animation:pulse 2.4s ease-in-out infinite}
.tile.xx8 .plate{background:#fff;position:relative}
.tile.xx8 .plate img{height:100%;width:100%;object-fit:cover;transform:scale(1.25)}
.tile.xx8 .plate::after{content:"";position:absolute;top:0;left:-60%;width:35%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.8),transparent);transform:skewX(-20deg);animation:shine 2.6s infinite}
.badge{position:absolute;top:-9px;left:50%;transform:translateX(-50%);padding:2px 10px;border-radius:999px;font:800 10.5px "Be Vietnam Pro",sans-serif;
  letter-spacing:.1em;color:#00131a;background:linear-gradient(90deg,var(--cyan),var(--green));box-shadow:0 0 12px rgba(0,255,156,.6);white-space:nowrap}
.sites .tips{margin-top:20px}

/* ===== hop thong bao ===== */
.modal{position:fixed;inset:0;z-index:10;display:grid;place-items:center;padding:16px;background:rgba(0,4,10,.72);backdrop-filter:blur(4px)}
.modal[hidden]{display:none}
.mbox{width:100%;max-width:470px;padding:28px 24px 22px;border-radius:16px;background:linear-gradient(180deg,#121c2a,#0b131e);
  border:1px solid #22344b;box-shadow:0 30px 80px rgba(0,0,0,.7);animation:rise .25s ease}
.mt{font-family:Orbitron,sans-serif;font-weight:900;text-align:center;font-size:24px;letter-spacing:.06em;margin-bottom:18px}
.mt.ok{color:var(--green);text-shadow:0 0 16px rgba(0,255,156,.5)}
.mt.warn{color:var(--amber);text-shadow:0 0 16px rgba(255,194,61,.45)}
.mt.bad{color:#ff3b4f;text-shadow:0 0 16px rgba(255,59,79,.5)}
.ml{list-style:none;display:grid;gap:12px;margin-bottom:6px}
.ml li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;line-height:1.5}
.ml b{color:var(--cyan)}
.ic{flex:0 0 20px;height:20px;border-radius:5px;margin-top:1px;position:relative}
.ic.ok{background:#17c964}.ic.ok::after{content:"";position:absolute;left:7px;top:3px;width:5px;height:10px;border:solid #fff;border-width:0 2.5px 2.5px 0;transform:rotate(45deg)}
.ic.warn{background:var(--amber)}.ic.warn::after{content:"!";position:absolute;inset:0;display:grid;place-items:center;color:#2a1a00;font-weight:900;font-size:13px}
.ic.bad{background:#ff3b4f}.ic.bad::after{content:"×";position:absolute;inset:0;display:grid;place-items:center;color:#fff;font-weight:900;font-size:16px;line-height:1}
.mbox .btn{width:100%;max-width:none;border:0;cursor:pointer}
.mbox .row{max-width:none;justify-content:center}

@media (max-width:820px){.tiles{grid-template-columns:repeat(4,1fr)}}
@media (max-width:600px){
  .tiles{grid-template-columns:repeat(3,1fr);gap:10px}
  .tile{padding:7px;border-radius:10px}
  .plate{height:46px}
  .nm{font-size:13.5px}
  .sites{padding:14px 10px}
}