:root{
  --bg:#0f1214; --bg-soft:#12171a; --panel:#151b1f; --panel-2:#1b2227; --panel-3:#222b31;
  --line:#232b32; --line-2:#33404a;
  --fg:#e9eef2; --muted:#9fadb8; --faint:#7b8791;
  --brand:#b7f04e; --brand-2:#cdf87f; --ok:#4ade80; --warn:#f5bf4f; --err:#ff6b7a;
  --r-panel:16px; --r-ctl:10px; --r-sm:8px;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --grad-btn:linear-gradient(135deg,#b7f04e,#8fdb2f);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--fg);font:15px/1.6 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body[data-lang="zh"]{--sans:ui-sans-serif,system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Segoe UI",Roboto,sans-serif}
::selection{background:color-mix(in srgb,var(--brand) 30%,transparent)}
a{color:var(--brand-2);text-decoration:none}
a:hover{text-decoration:underline}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.skip{position:absolute;left:-999px;top:10px;z-index:80;background:var(--panel);border:1px solid var(--line-2);padding:9px 16px;border-radius:var(--r-ctl);color:var(--fg);font-size:14px}
.skip:focus{left:16px}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
.narrow{max-width:460px}
header.top{position:sticky;top:0;z-index:20;backdrop-filter:blur(12px);background:color-mix(in srgb,var(--bg) 84%,transparent);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:6px;height:62px}
.brand{display:flex;align-items:center;gap:10px;font-weight:650;font-size:15.5px;color:var(--fg);text-decoration:none;margin-right:14px}
.brand:hover{text-decoration:none}
.brand .dot{width:28px;height:28px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:grid;place-items:center;font-size:13px;color:#0f1214;font-weight:800}
nav.main{display:flex;gap:2px}
nav.main a{padding:8px 12px;border-radius:var(--r-sm);color:var(--muted);font-size:14px}
nav.main a:hover{background:var(--panel-2);color:var(--fg);text-decoration:none}
nav.main a.active{color:var(--fg);background:var(--panel-2)}
.spacer{flex:1}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:38px;padding:8px 16px;border-radius:var(--r-ctl);border:1px solid var(--line-2);background:transparent;color:var(--fg);font:inherit;font-size:14px;font-weight:550;cursor:pointer;transition:border-color .15s,background .15s,filter .15s,color .15s;white-space:nowrap}
.btn:hover{border-color:var(--brand);background:var(--panel-2);text-decoration:none}
.btn.primary{background:var(--grad-btn);border-color:transparent;color:#0f1214;font-weight:700}
.btn.primary:hover{filter:brightness(1.1)}
.btn.ghost{border-color:transparent;background:transparent;color:var(--muted)}
.btn.ghost:hover{background:var(--panel-2);color:var(--fg);border-color:transparent}
.btn.danger{border-color:#5c2e3d;color:#ffb3c0}
.btn.danger:hover{border-color:var(--err);background:color-mix(in srgb,var(--err) 10%,transparent)}
.btn.sm{min-height:31px;padding:5px 12px;font-size:13px;border-radius:var(--r-sm)}
.btn.block{width:100%}
.btn:disabled{opacity:.55;cursor:not-allowed}
main{padding:30px 0 72px}
.sect{scroll-margin-top:84px}
h1{font-size:29px;letter-spacing:-.022em;line-height:1.18;margin:0 0 10px}
h2{font-size:19.5px;letter-spacing:-.012em;margin:34px 0 14px}
h3{font-size:15px;margin:0 0 8px}
.lead{color:var(--muted);font-size:16px;max-width:64ch;margin:0 0 14px}
.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:6px}
.page-head h1{margin-bottom:4px}
.sub{color:var(--faint);font-size:13.5px}
.grid{display:grid;gap:16px}
.grid.cols-3{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.grid.cols-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-panel);padding:22px}
.card.tight{padding:16px}
.card.plan{display:flex;flex-direction:column;position:relative;transition:border-color .15s}
.card.plan:hover{border-color:var(--line-2)}
.card.plan.featured{border-color:color-mix(in srgb,var(--brand) 55%,var(--line));background:linear-gradient(180deg,color-mix(in srgb,var(--brand) 7%,var(--panel)),var(--panel) 55%)}
.badge{position:absolute;top:-11px;left:22px;background:var(--grad-btn);color:#0f1214;font-size:11px;font-weight:700;letter-spacing:.02em;padding:3px 11px;border-radius:999px}
.price{font-size:30px;font-weight:700;letter-spacing:-.02em;font-variant-numeric:tabular-nums;margin:10px 0 2px}
.price small{font-size:13px;color:var(--muted);font-weight:500}
.desc{color:var(--faint);font-size:13px}
.feat{list-style:none;margin:16px 0 18px;padding:0;display:grid;gap:9px}
.feat li{display:flex;gap:9px;align-items:flex-start;color:var(--muted);font-size:13.5px;line-height:1.45}
.feat .ic{color:var(--brand-2);margin-top:2px}
.card.plan .cta-form,.card.plan .btn{margin-top:auto}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
.chip{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:7px 14px;background:var(--panel)}
.chip .ic{color:var(--brand-2)}
.hero{position:relative;display:grid;grid-template-columns:1.04fr .96fr;gap:56px;align-items:center;padding:52px 0 30px}
.hero:before{content:"";position:absolute;inset:-60px auto auto -120px;width:calc(100% + 120px);height:340px;background:radial-gradient(520px 260px at 26% 0%,color-mix(in srgb,var(--brand) 13%,transparent),transparent 72%);pointer-events:none;z-index:-1}
.hero h1{font-size:clamp(34px,4.8vw,56px);letter-spacing:-.03em;line-height:1.07;margin:0 0 16px}
.hero .lead{font-size:17px;max-width:52ch}
.hero .row{margin:26px 0 6px;gap:12px}
.hero .row .btn{min-height:46px;padding:10px 22px;font-size:15px}
.term{border:1px solid var(--line);border-radius:var(--r-panel);background:linear-gradient(180deg,var(--panel-2),var(--bg-soft));overflow:hidden}
.term-bar{display:flex;align-items:center;gap:7px;padding:11px 15px;border-bottom:1px solid var(--line)}
.term-bar i{width:10px;height:10px;border-radius:50%;background:var(--line-2)}
.term-bar span{margin-left:8px;font:11.5px var(--mono);color:var(--faint)}
.term pre{margin:0;padding:17px;background:transparent;border:0;border-radius:0;font-size:12.5px;line-height:1.75;white-space:pre-wrap;overflow-wrap:anywhere}
.term .p{color:var(--faint)}
.term .ok{color:var(--ok);font-weight:600}
.term .dim{color:var(--muted)}
.steps{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin:26px 0 0;padding:0;border-top:1px solid var(--line)}
.steps li{padding:24px 28px 10px 0}
.steps li+li{border-left:1px solid var(--line);padding-left:28px}
.steps .n{font:600 12px/1 var(--mono);color:var(--brand-2);letter-spacing:.08em}
.steps h3{margin:12px 0 7px;font-size:17px}
.steps p{margin:0;color:var(--muted);font-size:14px;line-height:1.6;max-width:38ch}
.duo{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:26px;align-items:start}
.duo>.sect{margin-top:0}
.authbox{padding:26px 24px}
.authbox h2{margin-top:0}
.authbox .muted{font-size:14.5px;line-height:1.6;margin:4px 0 18px}
.pick{display:flex;align-items:center;justify-content:space-between;gap:12px;border:1px solid var(--line-2);background:var(--panel-2);border-radius:var(--r-ctl);padding:11px 14px;margin:0 0 18px}
.pick .nm{font-weight:600;font-size:14px}
.pick .pr{font-size:12.5px;color:var(--faint);font-variant-numeric:tabular-nums}
.pick a{font-size:13px}
.langsw{display:flex;align-items:center;gap:2px}
.langsw a{display:inline-flex;align-items:center;min-height:30px;padding:2px 9px;border-radius:var(--r-sm);color:var(--faint);font-size:13px}
.langsw a:hover{color:var(--fg);background:var(--panel-2);text-decoration:none}
.langsw a.on{color:var(--fg);background:var(--panel-2);font-weight:600}
.field{margin-bottom:15px}
label{display:block;font-size:13px;color:var(--muted);font-weight:550;margin:0 0 7px}
input,select,textarea{width:100%;padding:10px 13px;border-radius:var(--r-ctl);border:1px solid var(--line-2);background:var(--panel-2);color:var(--fg);font:inherit;font-size:14px;transition:border-color .15s,box-shadow .15s}
input:focus,select:focus,textarea:focus{border-color:var(--brand);outline:none;box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 22%,transparent)}
input::placeholder,textarea::placeholder{color:var(--faint);opacity:1}
.hint{font-size:12px;color:var(--faint);margin-top:7px}
.inwrap{position:relative}
.inwrap input{padding-right:44px}
.peek{position:absolute;right:5px;top:50%;transform:translateY(-50%);width:32px;height:32px;display:grid;place-items:center;border:0;background:transparent;color:var(--faint);cursor:pointer;border-radius:var(--r-sm)}
.peek:hover{color:var(--fg);background:var(--panel-3)}
.peek.on{color:var(--brand-2)}
.hp{position:absolute!important;left:-6000px;top:auto;width:1px;height:1px;overflow:hidden}
.kc-out{margin-top:12px}
.kc-out:empty{margin-top:0}

.flow{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12.5px;color:var(--faint);margin:2px 0 20px}
.flow b{font-weight:600;color:var(--fg)}
.flow .done{color:var(--ok)}
.flow .sep{opacity:.5}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:11px 13px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--faint);font-weight:600;font-size:12px;letter-spacing:.03em}
tr:last-child td{border-bottom:0}
code,kbd{font-family:var(--mono);font-size:12.5px;background:var(--panel-2);border:1px solid var(--line);border-radius:7px;padding:2px 7px}
pre{background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-sm);padding:15px;overflow:auto;font-family:var(--mono);font-size:13px;line-height:1.6}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;padding:3px 10px;border-radius:999px;border:1px solid var(--line-2);color:var(--muted);white-space:nowrap}
.pill.ok{color:var(--ok);border-color:color-mix(in srgb,var(--ok) 42%,transparent);background:color-mix(in srgb,var(--ok) 8%,transparent)}
.pill.warn{color:var(--warn);border-color:color-mix(in srgb,var(--warn) 42%,transparent);background:color-mix(in srgb,var(--warn) 8%,transparent)}
.pill.err{color:var(--err);border-color:color-mix(in srgb,var(--err) 42%,transparent);background:color-mix(in srgb,var(--err) 8%,transparent)}
.alert{display:flex;gap:11px;align-items:flex-start;padding:13px 15px;border-radius:var(--r-ctl);border:1px solid var(--line-2);margin:14px 0;font-size:14px;background:var(--panel-2)}
.alert .ic{flex:0 0 auto;margin-top:2px}
.alert.err{border-color:color-mix(in srgb,var(--err) 45%,transparent);background:color-mix(in srgb,var(--err) 9%,var(--bg));color:#ffc9d2}
.alert.ok{border-color:color-mix(in srgb,var(--ok) 40%,transparent);background:color-mix(in srgb,var(--ok) 8%,var(--bg));color:#bdf3dc}
.alert.warn{border-color:color-mix(in srgb,var(--warn) 45%,transparent);background:color-mix(in srgb,var(--warn) 8%,var(--bg));color:#f7e3ab}
.alert.info{color:var(--muted)}
.kv{display:grid;grid-template-columns:150px 1fr;gap:9px 18px;font-size:14px;margin:0}
.kv dt{color:var(--muted)}
.kv dd{margin:0;overflow-wrap:anywhere}
.mono{font-family:var(--mono);font-size:13px}
.muted{color:var(--muted)}
.faint{color:var(--faint);font-size:13px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.bar{height:7px;border-radius:999px;background:var(--panel-2);border:1px solid var(--line);overflow:hidden}
.bar>i{display:block;height:100%;background:var(--grad-btn)}
.bar.warn>i{background:linear-gradient(90deg,#f4bf4f,#ff8a3d)}
.bar.err>i{background:linear-gradient(90deg,#ff6b7a,#ff3d6e)}
.empty{padding:36px;text-align:center;color:var(--muted);border:1px dashed var(--line-2);border-radius:var(--r-panel)}
.keybox .keyval{font-family:var(--mono);font-size:13.5px;overflow-wrap:anywhere}
hr.sep{border:0;border-top:1px solid var(--line);margin:16px 0}
.faq{border:0;border-bottom:1px solid var(--line);border-radius:0;background:transparent;margin:0}
.faq:first-of-type{border-top:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 2px;font-weight:550;font-size:15.5px}
.faq summary::-webkit-details-marker{display:none}
.faq summary .chev{transition:transform .18s;color:var(--faint);flex:0 0 auto}
.faq[open] summary .chev{transform:rotate(180deg)}
.faq .faq-a{padding:2px 2px 20px;color:var(--muted);font-size:14.5px;line-height:1.7;max-width:78ch}
.faq .faq-a code{white-space:nowrap}
footer{border-top:1px solid var(--line);margin-top:26px;color:var(--faint);font-size:13px}
footer .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px;padding:30px 22px 34px}
footer h4{margin:0 0 10px;font-size:12.5px;color:var(--muted);font-weight:600;letter-spacing:.02em}
footer a{color:var(--muted)}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
footer .foot-note{grid-column:1/-1;border-top:1px solid var(--line);padding-top:18px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
footer .brand{margin:0 0 10px;font-size:14px}
footer p{margin:0;max-width:36ch;line-height:1.6}
.stat{display:flex;flex-direction:column;gap:5px}
.stat .n{font-size:25px;font-weight:700;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat .l{color:var(--muted);font-size:13px}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--panel-3);border:1px solid var(--line-2);border-radius:var(--r-ctl);padding:11px 18px;box-shadow:0 18px 50px -20px rgba(0,0,0,.7);font-size:14px;opacity:0;transition:opacity .2s;pointer-events:none;z-index:60}
.toast.show{opacity:1}
.skel{height:14px;border-radius:6px;background:linear-gradient(90deg,var(--panel-2),var(--line),var(--panel-2));background-size:200% 100%;animation:sk 1.2s linear infinite}
@keyframes sk{0%{background-position:200% 0}100%{background-position:-200% 0}}
/* ---- one-page scope (chỉ áp cho body[data-page="one"] — không đụng admin/hoadon/404) ---- */
body[data-page="one"]{font-size:16px}
body[data-page="one"] main{padding:8px 0 84px}
body[data-page="one"] .top .wrap{height:64px}
body[data-page="one"] nav.main{margin-left:6px}
body[data-page="one"] nav.main a{display:inline-flex;align-items:center;min-height:44px;padding:0 13px}
.anchorbar{display:none}
body[data-page="one"] h1{font-size:clamp(34px,4.8vw,56px);letter-spacing:-.03em;line-height:1.07;margin:0 0 16px}
body[data-page="one"] h2{font-size:clamp(24px,3vw,34px);letter-spacing:-.022em;line-height:1.15;margin:40px 0 16px}
body[data-page="one"] h3{font-size:18px;letter-spacing:-.01em;margin:24px 0 10px}
body[data-page="one"] .lead{font-size:16.5px;max-width:60ch;margin:0 0 16px}
body[data-page="one"] .sect{margin-top:96px;scroll-margin-top:88px}
body[data-page="one"] .sect>h2:first-child{margin-top:0}
body[data-page="one"] .page-head h2{margin-top:0}
body[data-page="one"] .card h3:first-of-type{margin-top:0}
body[data-page="one"] .duo{margin-top:96px}
body[data-page="one"] .trial{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:18px;padding:20px 24px;border:1px dashed var(--line-2);border-radius:var(--r-panel);background:var(--bg-soft)}
body[data-page="one"] .trial .t-name{font-weight:650;font-size:16px}
body[data-page="one"] .trial .t-desc{color:var(--muted);font-size:13.5px;margin-top:3px}
body[data-page="one"] .trial .btn,body[data-page="one"] .trial .cta-form{margin-left:auto}
body[data-page="one"] footer{margin-top:0}
body[data-page="one"] footer .wrap{grid-template-columns:2fr 1fr 1fr;gap:32px;padding:46px 22px 40px}
@media (max-width:900px){.hero{grid-template-columns:1fr;gap:30px;padding:34px 0 10px}.term{max-width:560px}.duo{grid-template-columns:1fr;gap:64px}}
@media (max-width:760px){.steps{grid-template-columns:1fr}.steps li{padding:20px 0 6px}.steps li+li{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:22px}}
@media (max-width:719px){
  body[data-page="one"] nav.main{display:none}
  body[data-page="one"] .anchorbar{display:flex;gap:2px;overflow-x:auto;scroll-snap-type:x proximity;padding:0 22px 8px;scrollbar-width:none;position:sticky;top:65px;z-index:19;background:var(--bg);background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
  body[data-page="one"] .anchorbar::-webkit-scrollbar{display:none}
  body[data-page="one"] .anchorbar a{scroll-snap-align:start;display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:999px;color:var(--muted);font-size:14px;white-space:nowrap}
  body[data-page="one"] .anchorbar a:hover{color:var(--fg);text-decoration:none}
  body[data-page="one"] .sect{scroll-margin-top:132px}
  body[data-page="one"] main{padding-bottom:64px}
  body[data-page="one"] .hero{padding:10px 0 0}
  body[data-page="one"] h1{font-size:clamp(32px,7.6vw,40px)}
  body[data-page="one"] .trial .btn,body[data-page="one"] .trial .cta-form{margin-left:0;width:100%}
  body[data-page="one"] footer .wrap{grid-template-columns:1fr 1fr;gap:24px}
  body[data-page="one"] footer .wrap>div:first-child{grid-column:1/-1}
}
@media (max-width:700px){footer .wrap{grid-template-columns:1fr;gap:18px}}
@media (max-width:640px){.hide-sm{display:none}.kv{grid-template-columns:1fr}nav.main{display:none}h1{font-size:25px}.hero h1{font-size:27px}main{padding:22px 0 56px}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}