:root { --bg: #0b0d12; --panel: #131722; --panel2: #1a1f2e; --line: #262c3d; --text: #eef1f7; --muted: #9aa3b8; --accent: #3de0d0; --accent2: #a77bff; --ink: #04211e; --ok: #3fb950; --warn: #e2b53f; --bad: #ff6b6b;
  --grad: linear-gradient(120deg, #3de0d0, #a77bff); font-family: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif; }
* { box-sizing: border-box; }
html { color-scheme: dark; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 15px; line-height: 1.55; }
a { color: var(--accent); }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
header.top { position: sticky; top: 0; z-index: 5; background: rgba(11,13,18,.86); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; gap: 18px; height: 60px; }
.logo { display: flex; align-items: center; gap: 9px; font-family: "Chakra Petch", sans-serif; font-weight: 700; font-size: 19px; color: var(--text); text-decoration: none; }
.logo i { width: 28px; height: 28px; border-radius: 8px; background: var(--grad); display: grid; place-items: center; color: var(--ink); font-style: normal; font-size: 14px; }
nav.links { display: flex; gap: 16px; flex: 1; flex-wrap: wrap; }
nav.links a { color: var(--muted); text-decoration: none; font-size: 14px; }
nav.links a:hover { color: var(--text); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid var(--line); background: var(--panel2); color: var(--text); padding: 10px 18px; border-radius: 10px; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; min-height: 42px; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--grad); color: var(--ink); border: 0; }
.btn.sm { padding: 6px 12px; min-height: 34px; font-size: 13.5px; }
.btn:disabled { opacity: .55; cursor: default; }
.btn:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.hero { padding: 70px 0 40px; text-align: center; }
.hero h1 { font-family: "Chakra Petch", sans-serif; font-size: clamp(32px, 5.4vw, 58px); line-height: 1.1; margin: 0 0 16px; text-wrap: balance; }
.hero h1 span { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { color: var(--muted); font-size: 18px; max-width: 680px; margin: 0 auto 26px; text-wrap: balance; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.small { color: var(--muted); font-size: 13px; }
section.blk { padding: 46px 0; }
section.blk h2 { font-family: "Chakra Petch", sans-serif; font-size: 30px; margin: 0 0 6px; text-align: center; }
section.blk > .wrap > p.sub { color: var(--muted); text-align: center; margin: 0 0 28px; }
.feat { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.feat div { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.feat b { display: block; margin-bottom: 4px; }
.feat small { color: var(--muted); }
.pk-ky { display: flex; gap: 4px; padding: 4px; margin: 0 auto 22px; width: fit-content; max-width: 100%; background: var(--panel); border: 1px solid var(--line); border-radius: 99px; }
.pk-ky button { border: 0; background: none; color: var(--muted); font: inherit; font-weight: 600; padding: 8px 18px; border-radius: 99px; cursor: pointer; display: flex; align-items: center; gap: 6px; white-space: nowrap; }
.pk-ky button.on { background: var(--text); color: var(--bg); }
.pk-ky i { font-style: normal; font-size: 11.5px; font-weight: 800; padding: 1px 7px; border-radius: 99px; background: var(--grad); color: var(--ink); }
.pk-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; max-width: 820px; margin: 0 auto; }
.pk { position: relative; background: var(--panel); border: 1px solid var(--line); border-radius: 20px; padding: 28px 26px; display: flex; flex-direction: column; gap: 6px; }
.pk.hot { border: 1.5px solid transparent; background: linear-gradient(var(--panel), var(--panel)) padding-box, var(--grad) border-box; box-shadow: 0 18px 60px rgba(61,224,208,.13); }
.pk-tag { position: absolute; top: -12px; left: 24px; background: var(--grad); color: var(--ink); font-size: 12px; font-weight: 800; padding: 3px 12px; border-radius: 99px; }
.pk-ten { font-size: 15px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.pk-gia { font-family: "Chakra Petch", sans-serif; font-size: 42px; font-weight: 700; line-height: 1.1; }
.pk-gia small { font-family: "Be Vietnam Pro", sans-serif; font-size: 15px; font-weight: 400; color: var(--muted); }
.pk-phu { color: var(--muted); font-size: 13.5px; min-height: 21px; }
.pk ul { list-style: none; margin: 14px 0 18px; padding: 14px 0 0; border-top: 1px solid var(--line); display: grid; gap: 9px; flex: 1; font-size: 14.5px; }
.pk li { padding-left: 24px; position: relative; }
.pk li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 800; }
.pk .btn { width: 100%; }
.pk-tin { display: flex; flex-wrap: wrap; gap: 8px 10px; justify-content: center; margin: 22px 0 26px; }
.pk-tin span { font-size: 13px; color: var(--muted); padding: 5px 12px; border: 1px solid var(--line); border-radius: 99px; }
.pk-ss { max-width: 820px; margin: 0 auto; }
.pk-ss th:nth-child(n+2), .pk-ss td:nth-child(n+2) { text-align: center; width: 132px; }
.pk-ss th:last-child, .pk-ss td:last-child { color: var(--text); font-weight: 600; background: rgba(61,224,208,.05); }
.pk-ss tr.nh td { color: var(--muted); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; padding-top: 18px; background: none; text-align: left; }
.pk-ss .ck { color: var(--accent); font-weight: 800; } .pk-ss .no { color: var(--muted); }
.gbtn { display: flex; justify-content: center; margin: 4px 0 14px; min-height: 44px; }
.hoac { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 12.5px; margin: 6px 0 12px; }
.hoac::before, .hoac::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.dl { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.dl > div { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 22px; display: grid; gap: 10px; }
footer { border-top: 1px solid var(--line); padding: 26px 0 40px; color: var(--muted); font-size: 13px; text-align: center; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 22px; }
.auth { max-width: 420px; margin: 50px auto; }
.auth h1 { font-family: "Chakra Petch", sans-serif; margin: 0 0 14px; font-size: 26px; }
label.f { display: grid; gap: 5px; margin-bottom: 12px; font-size: 13.5px; color: var(--muted); }
input[type=email], input[type=password], input[type=text] { background: var(--panel2); border: 1px solid var(--line); color: var(--text); border-radius: 10px; padding: 10px 12px; font: inherit; width: 100%; }
.msg { min-height: 22px; font-size: 14px; margin: 8px 0; }
.msg.bad { color: var(--bad); } .msg.ok { color: var(--ok); }
.tabs { display: flex; gap: 6px; margin-bottom: 16px; }
.tabs button { flex: 1; }
.tabs button.on { border-color: var(--accent); color: var(--accent); }
.grid2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
@media (max-width: 800px) { .grid2 { grid-template-columns: 1fr; } nav.links { display: none; } }
.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.badge { display: inline-block; padding: 2px 10px; border-radius: 99px; font-size: 12.5px; font-weight: 700; background: var(--panel2); border: 1px solid var(--line); }
.badge.pro { background: var(--grad); color: var(--ink); border: 0; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
.tbl { overflow-x: auto; }
.qr { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 18px; align-items: start; }
.qr img { width: 220px; border-radius: 12px; background: #fff; }
.qr dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; font-size: 14px; }
.qr dt { color: var(--muted); } .qr dd { margin: 0; font-weight: 600; word-break: break-all; }
@media (max-width: 560px) { .qr { grid-template-columns: 1fr; } .qr img { width: 100%; max-width: 260px; } }
[hidden] { display: none !important; }
@media (max-width: 480px) { .pk-ky button { padding: 8px 10px; font-size: 13px; } .pk-gia { font-size: 34px; } }