:root {
  /* Bảng màu Tím huyền bí và Hồng tím Neon */
  --bg: #0d0118;
  --card: #1c053a;
  --accent: #f472b6;
  --accent-hover: #db2777;
  --muted: #9aa4b2;
  --text: #e6eef6;
  --nav-bg: rgba(28, 5, 58, 0.85);
}
body{
  margin:0;
  font-family:Inter,Segoe UI,Arial,Helvetica,sans-serif;
  background:linear-gradient(180deg,#0d0118 0%,#2a0b36 100%);
  color:var(--text);
  line-height:1.5;
}
nav{background:var(--nav-bg);backdrop-filter:blur(8px);border-bottom:1px solid rgba(244,114,182,0.1);position:sticky;top:0;z-index:100}
.nav-container{max-width:1080px;margin:0 auto;padding:14px 28px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{font-weight:700;font-size:20px;color:var(--text);text-decoration:none;letter-spacing:0.5px;display:flex;align-items:center;gap:12px}
.nav-logo-img{width:36px;height:36px;border-radius:8px;object-fit:cover;border:2px solid var(--accent);box-shadow:0 0 10px rgba(244,114,182,0.25)}
.nav-links{display:flex;gap:22px}
.nav-link{color:var(--muted);text-decoration:none;font-size:14.5px;font-weight:500;transition:color .2s ease,text-shadow .2s ease}
.nav-link:hover{color:var(--accent);text-shadow:0 0 10px rgba(244,114,182,.6)}

/* Common wrappers */
.wrap{max-width:1080px;margin:20px auto 40px auto;padding:0 28px}
header{display:flex;align-items:center;justify-content:space-between;margin-top:18px}
.header-logo-group{display:flex;align-items:center;gap:18px}
.bot-logo-img{width:64px;height:64px;border-radius:50%;object-fit:cover;border:2px solid var(--accent);box-shadow:0 0 10px rgba(244,114,182,.3)}
h1{margin:0;font-size:32px}
.meta{color:var(--muted);font-size:14.5px}
.hero{background:rgba(244,114,182,.015);border:1px solid rgba(244,114,182,.04);padding:28px;border-radius:14px;margin-top:18px}
.hero p{margin-top:0;font-size:16.5px;color:#cbd5e1;max-width:800px}
.buttons{margin-top:20px}
.btn{display:inline-block;padding:11px 20px;border-radius:9px;text-decoration:none;font-weight:600;margin-right:12px;transition:all .2s cubic-bezier(.4,0,.2,1)}
.btn-primary{background:var(--accent);color:#1a0118;box-shadow:0 4px 14px rgba(244,114,182,.25)}
.btn-primary:hover{background:var(--accent-hover);color:#e6eef6;transform:translateY(-2px);box-shadow:0 6px 20px rgba(219,39,119,.5)}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.1);color:var(--text)}
.btn-ghost:hover{background:rgba(244,114,182,.04);border-color:rgba(244,114,182,.25);color:var(--accent)}

/* Guide */
.guide{margin-top:36px;border-top:1px solid rgba(244,114,182,.05);padding-top:28px}
.guide-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:24px}
.guide-card{background:var(--card);padding:24px;border-radius:12px;border:1px solid rgba(255,255,255,.03);display:flex;flex-direction:column;align-items:center;text-align:center;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}
.guide-card:hover{border-color:rgba(244,114,182,.15);box-shadow:0 0 15px rgba(244,114,182,.1);transform:translateY(-2px)}
.guide-icon-wrap{background:rgba(244,114,182,.06);color:var(--accent);width:60px;height:60px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:16px;border:1px solid rgba(244,114,182,.15)}
.guide-card h3{margin:0 0 8px 0;font-size:17px;color:var(--text)}
.guide-card .meta{font-size:14.5px}

/* Features */
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:36px;border-top:1px solid rgba(244,114,182,.05);padding-top:28px}
.card{background:var(--card);padding:20px;border-radius:10px;border:1px solid rgba(255,255,255,.03);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;display:flex;flex-direction:column;gap:10px}
.card:hover{border-color:rgba(244,114,182,.15);transform:translateY(-2px);box-shadow:0 5px 15px rgba(11,2,29,.6)}
.card h3{margin:0;font-size:17px;display:flex;align-items:center;gap:10px}
.card-icon{color:var(--accent);flex-shrink:0}
.card .meta{font-size:14.5px}

/* FAQ */
.faq{margin-top:36px;border-top:1px solid rgba(244,114,182,.05);padding-top:28px}
.faq h2{font-size:24px;margin-bottom:22px}
.faq-container{display:flex;flex-direction:column;gap:14px}
.qa-item{background:var(--card);border:1px solid rgba(255,255,255,.03);border-radius:10px;overflow:hidden;transition:border-color .3s ease,box-shadow .3s ease}
.qa-item.active{border-color:var(--accent);box-shadow:0 0 15px rgba(244,114,182,.15)}
.qa-header{display:flex;justify-content:space-between;align-items:center;padding:18px 24px;cursor:pointer;user-select:none}
.qa-header strong{font-size:15.5px;color:var(--text);font-weight:600}
.qa-icon{color:var(--muted);transition:transform .3s ease,color .3s ease;display:flex;align-items:center;justify-content:center}
.qa-item.active .qa-icon{transform:rotate(180deg);color:var(--accent)}
.qa-content{max-height:0;overflow:hidden;transition:max-height .3s cubic-bezier(.4,0,.2,1),padding .3s ease;padding:0 24px}
.qa-item.active .qa-content{padding-bottom:20px}.qa-content .meta{color:#cbd5e1;font-size:14.5px;line-height:1.6}

footer{margin-top:48px;border-top:1px solid rgba(244,114,182,.05);padding-top:24px;color:var(--muted);font-size:13.5px;text-align:center}
.footer-policy{margin-top:10px}
.footer-policy a{color:var(--muted);text-decoration:none;margin:0 10px;transition:color .2s ease}
.footer-policy a:hover{color:var(--accent)}

/* Commands page specifics */
.commands-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(480px,1fr));gap:20px}
.category-card{background:var(--card);padding:24px;border-radius:14px;border:1px solid rgba(255,255,255,.03);box-shadow:0 6px 24px rgba(11,2,29,.4);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}
.category-card:hover{border-color:rgba(244,114,182,.15);box-shadow:0 8px 32px rgba(11,2,29,.6);transform:translateY(-2px)}
.category-title{color:var(--accent);font-size:19px;margin:0 0 18px 0;display:flex;align-items:center;gap:10px;border-bottom:1px solid rgba(244,114,182,.1);padding-bottom:10px}
.cmd-row{display:flex;gap:16px;align-items:center;padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.04);transition:background-color .2s ease}
.cmd-badge{font-family:Consolas,Monaco,monospace;color:var(--accent);background:rgba(244,114,182,.08);padding:5px 10px;border-radius:6px;font-size:13.5px;font-weight:600;min-width:140px;text-align:center;box-sizing:border-box;border:1px solid rgba(244,114,182,.12);flex-shrink:0}
.cmd-desc{color:#cbd5e1;font-size:14.5px;line-height:1.4}

/* Privacy/Terms specifics */
.wrap.small{max-width:800px}
section{background:var(--card);border:1px solid rgba(255,255,255,.03);padding:32px;border-radius:14px;box-shadow:0 5px 25px rgba(11,2,29,.4)}
h2{font-size:20px;color:var(--accent);margin-top:28px;margin-bottom:12px;display:flex;align-items:center;gap:8px}
p{color:#cbd5e1;font-size:15.5px;margin:0 0 16px 0}
ul{margin:0 0 20px 0;padding-left:20px;color:#cbd5e1}
li{margin-bottom:8px;font-size:15px}
code{background:rgba(244,114,182,.1);color:var(--accent);padding:2px 6px;border-radius:4px;font-family:Consolas,Monaco,monospace;font-size:14px}

/* Responsive tweaks */
@media(max-width:720px){.wrap{padding:0 18px;margin:24px auto}.guide-steps,.features{grid-template-columns:1fr}.card,.guide-card{padding:18px}.qa-header{padding:16px 18px}.qa-content{padding:0 18px}}
@media(max-width:520px){.nav-container{padding:14px 18px}.wrap{padding:0 18px}.h1{font-size:24px}.header-logo-group{gap:12px}.bot-logo-img{width:48px;height:48px}}

/* Plain-text fallback: hide JS-built UI until JS activates */
.wrap{display:none !important}
#plain-text{display:block;color:var(--text);font-family:Inter,Arial,sans-serif;max-width:1080px;margin:24px auto;padding:20px;white-space:pre-wrap}