*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{position:relative;margin:0;padding-left:80px;color:var(--chu);background:var(--nen)}
body::before{content:"";position:absolute;inset:0 auto 0 0;width:var(--niti-rail-w,80px);background:var(--nen-noi);border-right:1px solid var(--vien);pointer-events:none}
niti-rail{display:block}
body[data-route="home"]{background:
  radial-gradient(circle at 83% 8%,rgb(13 179 254 / 15%),transparent 34rem),
  var(--nen)}
a{color:var(--mau-nhan);text-underline-offset:3px}
a:hover{color:var(--mau-nhan);text-decoration-thickness:2px}
.skip{position:fixed;top:-5rem;left:1rem;z-index:2000;padding:.75rem 1rem;background:var(--mau-xanh);color:#fff;border-radius:.5rem}
.skip:focus{top:1rem}
:focus-visible{outline:3px solid var(--mau-xanh-troi);outline-offset:3px}
header,main,footer{max-width:1160px;margin:auto;padding-inline:28px}
.site-header{display:flex;justify-content:space-between;align-items:center;gap:1.5rem;min-height:88px;padding-top:18px}
.brand{display:inline-flex;align-items:center;gap:.65rem;font-size:1.35rem;font-weight:750;text-decoration:none;color:var(--chu)}
.brand img{display:block;width:44px;height:44px;border-radius:12px;object-fit:cover}
.brand b{color:var(--mau-nhan)}
nav{display:flex;gap:1.15rem;align-items:center;flex-wrap:wrap}
nav a{color:inherit;text-decoration:none}
.cta,.button,button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:.7rem 1.1rem;border:0;border-radius:12px;background:var(--mau-xanh);color:#fff;font:inherit;font-weight:700;text-decoration:none;cursor:pointer}
.button:hover,.cta:hover,button:hover{background:var(--mau-xanh-dam);color:#fff}
.ghost{background:transparent;color:var(--mau-nhan);border:1px solid currentColor}
.ghost:hover{background:var(--nen-mem);color:var(--mau-nhan)}
.page{min-height:60vh}
html[data-niti-page="studio"] .page[data-page="studio"]{min-height:calc(100vh - 88px)}
main:focus{outline:none}
.hero{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);align-items:center;gap:3.5rem;padding:5.4rem 0 4.4rem}
.hero h1,.page-title h1,.legal h1,.studio-placeholder h1{font-size:clamp(2.55rem,6.5vw,5.35rem);line-height:1.03;letter-spacing:-.045em;margin:.18em 0}
.lead{max-width:42rem;color:var(--chu-phu);font-size:clamp(1.05rem,2vw,1.28rem)}
.eyebrow{text-transform:uppercase;letter-spacing:.13em;font-size:.78rem;font-weight:800;color:var(--mau-nhan);margin:0 0 .8rem}
.actions{display:flex;gap:.8rem;flex-wrap:wrap;margin:1.65rem 0}
.promo{display:flex;gap:.7rem;flex-wrap:wrap;align-items:center;margin-top:1.5rem;padding:.85rem 1rem;border:1px solid var(--vien);border-radius:14px;background:var(--nen-noi);box-shadow:var(--bong)}
.promo span{color:var(--chu-phu)}
.sound-card,.panel,.status-card{background:var(--nen-noi);border:1px solid var(--vien);border-radius:calc(var(--ban-kinh) + 6px);padding:1.7rem;box-shadow:var(--bong)}
.sound-card h2{margin-top:0}
.sound-card label,label{font-weight:700}
.emotion-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.55rem;margin:1rem 0}
.emotion-grid button{padding:.55rem;font-size:.88rem}
section{padding:3.4rem 0}
h2{font-size:clamp(1.65rem,3.2vw,2.35rem);line-height:1.15}
h3{font-size:1.17rem}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1.1rem}
article,.panel{background:var(--nen-noi);border:1px solid var(--vien);border-radius:18px;padding:1.5rem}
article h2,article h3{margin-top:0}
.number{display:inline-grid;place-items:center;width:2.4rem;height:2.4rem;border-radius:50%;background:var(--nen-mem);color:var(--mau-nhan);font-weight:800}
.table-wrap{overflow-x:auto;border:1px solid var(--vien);border-radius:18px;background:var(--nen-noi)}
table{width:100%;border-collapse:collapse;color:var(--chu);background:var(--nen-noi)}
th,td{text-align:left;padding:1rem;border-bottom:1px solid var(--vien);vertical-align:top}
th{background:var(--nen-mem)}
tbody tr:last-child td{border-bottom:0}
.featured-row{background:rgb(13 179 254 / 8%)}
.price{font-variant-numeric:tabular-nums;font-weight:800;white-space:nowrap}
.cta-band{display:flex;align-items:center;justify-content:space-between;gap:2rem;margin:2rem 0 4rem;padding:2.2rem;border-radius:24px;background:linear-gradient(120deg,var(--mau-navy),#003a99);color:#fff}
.cta-band h2{margin:.2rem 0}
.cta-band .eyebrow{color:#8bd8ff}
footer{display:grid;grid-template-columns:1fr auto;gap:1rem 2rem;padding-block:3rem 2.5rem;border-top:1px solid var(--vien)}
footer nav{justify-content:flex-end;gap:.7rem 1.1rem}
footer .small{grid-column:1/-1}
.page-title{padding:4rem 0 1.4rem}.page-title h1{max-width:900px}
.filters{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem;margin:1.2rem 0;padding:1.2rem;background:var(--nen-noi);border:1px solid var(--vien);border-radius:18px}
.filters label{margin:0}
select,input,textarea{display:block;width:100%;min-height:44px;padding:.7rem .8rem;border:1px solid var(--vien);border-radius:10px;margin:.35rem 0 .8rem;font:inherit;color:var(--chu);background:var(--nen-noi)}
textarea{min-height:9rem;resize:vertical}
.voice-card{display:flex;flex-direction:column;gap:.7rem}
.voice-card p{margin:.2rem 0}
.voice-top{display:flex;align-items:center;gap:.85rem}
.voice-name{flex:1}.voice-name h2{font-size:1.2rem;margin:0}
.voice-actions{display:flex;gap:.6rem;flex-wrap:wrap;margin-top:auto}
.voice-actions>*{flex:1}
.avatar{display:grid;place-items:center;flex:0 0 3rem;width:3rem;height:3rem;border-radius:50%;background:linear-gradient(135deg,var(--mau-xanh-troi),var(--mau-xanh));color:#fff;font-size:1.2rem;font-weight:800}
.state{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;padding:1rem 1.2rem;border:1px solid var(--vien);border-radius:14px;background:var(--nen-noi);color:var(--chu-phu)}
.faq{display:grid;gap:.75rem}
details{padding:1rem 1.2rem;border:1px solid var(--vien);border-radius:14px;background:var(--nen-noi)}
summary{font-weight:750;cursor:pointer}
.docs-layout{display:grid;grid-template-columns:180px minmax(0,1fr);gap:1rem;margin-bottom:2rem}
.doc-nav{display:flex;flex-direction:column;gap:.6rem;align-items:stretch}
.doc-tab{background:var(--nen-noi);color:var(--chu);border:1px solid var(--vien);justify-content:flex-start}
.doc-tab[aria-pressed="true"]{background:var(--mau-navy);color:#fff}
pre{max-width:100%;overflow:auto;padding:1.25rem;border-radius:16px;background:var(--mau-navy);color:#e7f2ff;line-height:1.55;tab-size:2}
code{font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace}
.small{color:var(--chu-phu);font-size:.9rem}
.status-card{display:flex;align-items:center;gap:1rem;margin:2rem 0 5rem}
.status-card>div{flex:1}.status-card h2{margin:.1rem 0}
.status-dot{width:1.1rem;height:1.1rem;border-radius:50%;background:#9d8b33;box-shadow:0 0 0 .35rem rgb(157 139 51 / 16%)}
.status-dot[data-state="ok"]{background:var(--thanh-cong);box-shadow:0 0 0 .35rem rgb(17 98 62 / 16%)}
.status-dot[data-state="error"]{background:var(--nguy-hiem);box-shadow:0 0 0 .35rem rgb(165 42 42 / 16%)}
.legal{max-width:840px;padding-bottom:5rem}
.legal p{font-size:1.05rem}
.toolbar{display:flex;justify-content:space-between;align-items:center;gap:1rem}
.toolbar h2{margin:0}
.console{padding:3rem 0 5rem}
.header-user{display:inline-flex;align-items:center;gap:.55rem;color:var(--chu-phu);font-size:.9rem}
.header-user strong{max-width:10rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--chu)}
.header-logout{padding:0;border:0;background:none;color:var(--mau-nhan);font:inherit;font-weight:750;cursor:pointer}
.console #auth{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-top:1.2rem}
.console #dashboard>.panel{margin-top:1.2rem}
.account-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:1rem;margin-top:1.2rem}
.account-grid h3{margin-top:0}
.auth-actions{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap;margin-top:.8rem}
.key-once{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap;margin:.8rem 0;padding:.8rem;border:1px solid var(--mau-xanh);border-radius:12px;background:var(--nen-mem)}
.key-once code{overflow-wrap:anywhere}
.usage-list{display:grid;gap:.35rem;margin-top:.6rem;max-height:22rem;overflow:auto}
.usage-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:.6rem;padding:.55rem .7rem;border-bottom:1px solid var(--vien);font-variant-numeric:tabular-nums}
.usage-row span:not(:first-child),.usage-row time{color:var(--chu-phu)}
.studio-placeholder{padding:5rem 0;max-width:860px}
.studio-page{padding-bottom:5rem}
.studio-toolbar{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1rem}
.studio-links{display:flex;gap:.6rem;flex-wrap:wrap;align-items:center;margin:.8rem 0}
.session-note{display:flex;flex-direction:column;justify-content:center;gap:.25rem;padding:.85rem 1rem;border:1px solid var(--vien);border-radius:14px;background:var(--nen-mem)}
.studio-editor,.export-panel,.voice-create-grid>.panel,.voice-create-grid>div:last-child{padding:1.2rem;border:1px solid var(--vien);border-radius:18px;background:var(--nen-noi)}
.studio-editor textarea{min-height:15rem}
.editor-actions{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.editor-actions .small{margin-right:auto}
.file-picker{display:flex;align-items:center;gap:.7rem;min-height:50px;padding:.35rem .7rem .35rem .4rem;border:1px dashed var(--vien);border-radius:14px;background:var(--nen-noi)}
.file-picker.dang-keo{border-color:var(--mau-nhan);background:var(--nen-mem);box-shadow:0 0 0 3px color-mix(in srgb,var(--mau-nhan) 18%,transparent)}
.file-button{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:.55rem .9rem;border:1px solid var(--mau-nhan);border-radius:10px;color:var(--mau-nhan);font-weight:650;cursor:pointer;white-space:nowrap}
.file-button:hover{background:var(--nen-mem)}
.file-input{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0 0 0 0)!important;white-space:nowrap!important;border:0!important}
.file-name{min-width:0;max-width:18rem;overflow:hidden;color:var(--chu-phu);text-overflow:ellipsis;white-space:nowrap}
.file-picker.co-tep .file-name{color:var(--mau-chinh);font-weight:600}
.file-field{display:grid;gap:.35rem}
#sample-player{width:100%;max-width:26rem;margin-top:.8rem}
.segment-list{display:grid;gap:1rem;margin:1.2rem 0}
.segment-card{padding:1.15rem;border:1px solid var(--vien);border-radius:16px;background:var(--nen-noi)}
.segment-card textarea{min-height:6rem}
.segment-head{display:flex;justify-content:space-between;align-items:center;gap:1rem}
.segment-head h3{margin:0}
.segment-controls{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:.8rem}
.segment-controls select{margin-bottom:0}
.segment-actions{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;margin-top:.8rem}
.segment-actions audio{max-width:100%;height:40px}
.analysis-wrap{overflow-x:auto;border:1px solid var(--vien);border-radius:16px;background:var(--nen-noi)}
.analysis-table{width:100%;min-width:980px;border-collapse:collapse}
.analysis-table th,.analysis-table td{padding:.7rem;border-bottom:1px solid var(--vien);text-align:left;vertical-align:top}
.analysis-table th{color:var(--chu-phu);font-size:.82rem;text-transform:uppercase;letter-spacing:.04em}
.analysis-table textarea{min-height:6.5rem;margin:0}
.analysis-table select,.analysis-table input{margin:0;min-width:7rem}
.analysis-table tr:last-child td{border-bottom:0}
.analysis-meta{display:grid;gap:.25rem;margin-top:.4rem;color:var(--chu-phu);font-size:.8rem}
.analysis-meta code{overflow-wrap:anywhere;white-space:normal;font-size:.72rem}
.analysis-audio{display:grid;gap:.5rem;min-width:12rem}
.analysis-audio audio{width:13rem;max-width:100%}
.studio-actions{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.studio-actions p{margin:0}
.export-panel{display:grid;grid-template-columns:1fr 1.3fr;gap:1.5rem;margin:1.2rem 0 3.2rem}
.export-panel h2{margin:.2rem 0}
.export-controls{display:grid;grid-template-columns:1fr 1fr auto;align-items:end;gap:.8rem}
.export-controls select{margin:0}
#studio-download{margin-top:.8rem}
.dictionary-page{padding-bottom:5rem}
.dictionary-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.8fr);gap:1rem;margin:1rem 0 2rem}
.dictionary-form,.dictionary-import{padding:1.2rem;border:1px solid var(--vien);border-radius:18px;background:var(--nen-noi)}
.check-row{display:flex;align-items:center;gap:.65rem}
.check-row input{display:inline;width:auto;min-height:0;margin:0}
.dictionary-list{display:grid;gap:.65rem;margin-top:.8rem}
.dictionary-item{display:grid;grid-template-columns:1fr 1fr auto auto;align-items:center;gap:1rem;padding:.9rem 1rem;border:1px solid var(--vien);border-radius:14px;background:var(--nen-noi)}
.dictionary-item strong{overflow-wrap:anywhere}
.dictionary-item small{color:var(--chu-phu)}
.history-list,.voice-mine-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:.8rem;margin-top:.8rem}
.history-card,.voice-mine-card{padding:1rem;border:1px solid var(--vien);border-radius:14px;background:var(--nen-noi)}
.history-card h3,.voice-mine-card h4{margin:0 0 .3rem}
.voice-mine{margin-top:3.5rem}
.voice-create-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:1rem;margin-top:1rem}
.record-row{display:flex;gap:.6rem;flex-wrap:wrap}
#voice-challenge-text{padding:.8rem;border-left:3px solid var(--mau-xanh);background:var(--nen-mem);border-radius:.5rem}
[hidden]{display:none!important}
html[data-niti-page="home"] .page:not([data-page="home"]),
html[data-niti-page="voices"] .page:not([data-page="voices"]),
html[data-niti-page="pricing"] .page:not([data-page="pricing"]),
html[data-niti-page="docs"] .page:not([data-page="docs"]),
html[data-niti-page="status"] .page:not([data-page="status"]),
html[data-niti-page="terms"] .page:not([data-page="terms"]),
html[data-niti-page="privacy"] .page:not([data-page="privacy"]),
html[data-niti-page="voice-policy"] .page:not([data-page="voice-policy"]),
html[data-niti-page="ai-label"] .page:not([data-page="ai-label"]),
html[data-niti-page="contact"] .page:not([data-page="contact"]),
html[data-niti-page="console"] .page:not([data-page="console"]),
html[data-niti-page="studio"] .page:not([data-page="studio"]),
html[data-niti-page="dictionary"] .page:not([data-page="dictionary"]){display:none!important}
html[data-niti-page="home"] .page[data-page="home"],
html[data-niti-page="voices"] .page[data-page="voices"],
html[data-niti-page="pricing"] .page[data-page="pricing"],
html[data-niti-page="docs"] .page[data-page="docs"],
html[data-niti-page="status"] .page[data-page="status"],
html[data-niti-page="terms"] .page[data-page="terms"],
html[data-niti-page="privacy"] .page[data-page="privacy"],
html[data-niti-page="voice-policy"] .page[data-page="voice-policy"],
html[data-niti-page="ai-label"] .page[data-page="ai-label"],
html[data-niti-page="contact"] .page[data-page="contact"],
html[data-niti-page="console"] .page[data-page="console"],
html[data-niti-page="studio"] .page[data-page="studio"],
html[data-niti-page="dictionary"] .page[data-page="dictionary"]{display:block!important}
@media(max-width:900px){
  .hero{grid-template-columns:1fr;gap:1.8rem;padding-top:4rem}
  .filters{grid-template-columns:repeat(2,minmax(0,1fr))}
  .console #auth{grid-template-columns:1fr}
  .docs-layout{grid-template-columns:1fr}
  .doc-nav{flex-direction:row;flex-wrap:wrap}
  .studio-toolbar,.export-panel,.voice-create-grid,.dictionary-grid{grid-template-columns:1fr}
  .account-grid{grid-template-columns:1fr}
  .segment-controls{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-header{align-items:flex-start;flex-direction:column;padding-top:80px}
  .site-header nav{padding-bottom:.8rem}
}
@media(max-width:800px){body{padding-left:0}header,main,footer{padding-inline:24px}}
@media(max-width:650px){
  header,main,footer{padding-inline:18px}
  .hero{padding:3rem 0}
  .emotion-grid{grid-template-columns:1fr}
  .filters{grid-template-columns:1fr}
  .cta-band,footer{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start}
  footer nav{justify-content:flex-start}
  .status-card{align-items:flex-start;flex-wrap:wrap}
  .status-card>div{flex-basis:calc(100% - 2.2rem)}
  .status-card button{width:100%}
  .segment-controls,.export-controls,.dictionary-item{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media(forced-colors:active){.status-dot,.avatar{forced-color-adjust:none}}