:root{
  --bg:#0b0e11;
  --panel:#12161c;
  --panel-2:#161b22;
  --border:#242b34;
  --text:#dbe2ea;
  --muted:#7c8797;
  --accent:#4fd1c5;
  --accent-dim:#2c6f6a;
  --warn:#e8a33d;
  --danger:#e06c75;
  --mono:'JetBrains Mono','Fira Code',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
}
*{box-sizing:border-box; overflow-wrap:break-word;}
html{overflow-x:hidden;}
body{margin:0; background:var(--bg); color:var(--text); font-family:var(--sans); line-height:1.55; overflow-x:hidden;}
a{color:var(--accent); text-decoration:none;}
a:hover{text-decoration:underline;}
.wrap{max-width:920px; margin:0 auto; padding:40px 24px 96px;}

nav.topnav{border-bottom:1px solid var(--border); background:var(--panel); position:sticky; top:0; z-index:10;}
nav.topnav .inner{max-width:920px; margin:0 auto; padding:0 16px; display:flex; align-items:center; justify-content:space-between; height:56px; gap:6px;}
nav.topnav .brand{font-family:var(--mono); font-weight:600; color:var(--text); font-size:14px; text-decoration:none; display:inline-flex; align-items:center; gap:16px;}
.brand-logo{height:44px; width:44px; border-radius:9px; display:block; flex:0 0 auto; margin-top:4px;}
.brand-text{position:relative; top:0; line-height:1;}
nav.topnav .brand:hover{text-decoration:none; color:var(--accent);}
nav.topnav .links{display:flex; gap:2px; align-items:center; overflow-x:auto; scrollbar-width:none; min-width:0; flex:1 1 auto; justify-content:flex-end;}
.langswitch{font-family:var(--mono); font-size:12px; color:var(--muted); display:flex; align-items:center; gap:4px; margin-left:8px; padding-left:10px; border-left:1px solid var(--border); flex:0 0 auto;}
.langswitch a{color:var(--muted); padding:4px 3px;}
.langswitch a:hover{color:var(--text); text-decoration:none;}
.langswitch a.active{color:var(--accent); font-weight:600;}
.langswitch .langsep{color:var(--border);}
nav.topnav .brand{flex:0 0 auto;}
nav.topnav .links::-webkit-scrollbar{display:none;}
nav.topnav a.link{font-family:var(--mono); font-size:12.5px; color:var(--muted); padding:8px 9px; border-radius:6px; white-space:nowrap;}
nav.topnav a.link:hover{color:var(--text); text-decoration:none; background:var(--panel-2);}
nav.topnav a.link.active{color:var(--bg); background:var(--accent);}
nav.topnav a.link.active:hover{color:var(--bg);}
nav.topnav form{margin:0;}
nav.topnav button.linklike{font-family:var(--mono); font-size:13px; color:var(--muted); background:none; border:none; padding:8px 12px; border-radius:6px; cursor:pointer;}
nav.topnav button.linklike:hover{color:var(--text); background:var(--panel-2);}

h1{font-family:var(--mono); font-size:clamp(24px,4vw,34px); margin:0 0 12px; font-weight:600; letter-spacing:-0.01em;}
h2{font-family:var(--mono); font-size:19px; margin:48px 0 16px; padding-top:8px; border-top:1px solid var(--border);}
h2 .num{color:var(--accent); margin-right:10px;}
.eyebrow{font-family:var(--mono); font-size:12px; letter-spacing:.12em; text-transform:uppercase; color:var(--accent); margin-bottom:10px;}
.lede{color:var(--muted); font-size:16px; max-width:640px;}

code{font-family:var(--mono); background:var(--panel-2); padding:2px 6px; border-radius:4px; font-size:13px; color:var(--accent);}
pre{background:var(--panel); border:1px solid var(--border); border-radius:8px; padding:16px; overflow-x:auto; font-family:var(--mono); font-size:13px;}
pre code{background:none; padding:0; color:var(--text);}

.diagram{margin-top:28px; display:flex; align-items:center; justify-content:space-between; gap:8px; font-family:var(--mono); font-size:12px; flex-wrap:wrap;}
.node{background:var(--panel); border:1px solid var(--border); border-radius:6px; padding:10px 14px; text-align:center; flex:1; min-width:120px;}
.node .k{color:var(--muted); display:block; font-size:10px; text-transform:uppercase; letter-spacing:.08em; margin-bottom:4px;}
.arrow{color:var(--accent-dim); flex:0 0 auto; font-size:16px;}

.diff{font-family:var(--mono); font-size:13px; background:var(--panel); border:1px solid var(--border); border-radius:8px; overflow:hidden; margin:20px 0;}
.diff .row{display:flex; padding:8px 14px; gap:12px; border-bottom:1px solid var(--border);}
.diff .row:last-child{border-bottom:none;}
.diff .tag{flex:0 0 20px; font-weight:700;}
.diff .old{color:var(--danger);} .diff .old .tag{color:var(--danger);}
.diff .new{color:#7ee787;} .diff .new .tag{color:#7ee787;}

.card{background:var(--panel); border:1px solid var(--border); border-radius:8px; padding:20px; margin:16px 0;}

/* ---------------- Live config generator (guide.php) ---------------- */
.cfg-panel{border-color:var(--accent-dim);}
.cfg-grid{display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:14px; margin:16px 0;}
.cfg-field{display:flex; flex-direction:column; gap:5px;}
.cfg-field label{font-family:var(--mono); font-size:11px; color:var(--muted); text-transform:uppercase; letter-spacing:.05em;}
.cfg-field input{background:var(--bg); border:1px solid var(--border); border-radius:6px; padding:9px 10px; color:var(--text); font-family:var(--mono); font-size:13px;}
.cfg-field input:focus{outline:none; border-color:var(--accent);}
.cfg-field input::placeholder{color:var(--muted); opacity:.6;}
.cfg-actions{display:flex; gap:10px; flex-wrap:wrap; margin-top:4px;}
mark.cfg-filled{background:var(--accent-dim); color:#d7fff9; padding:0 2px; border-radius:3px; font-weight:600;}
.cfg-file-box{padding-top:16px;}
.cfg-file-head{display:flex; align-items:center; justify-content:space-between; margin-bottom:4px; flex-wrap:wrap; gap:8px;}
.cfg-file-actions{display:flex; gap:8px;}
.card .k{font-family:var(--mono); font-size:12px; color:var(--muted); text-transform:uppercase; letter-spacing:.06em; margin-bottom:6px;}

.tabs{display:flex; gap:8px; margin-bottom:16px;}
.tab{font-family:var(--mono); font-size:13px; padding:8px 16px; border-radius:6px; border:1px solid var(--border); background:var(--panel-2); color:var(--muted); cursor:pointer;}
.tab.active{color:var(--bg); background:var(--accent); border-color:var(--accent);}
.pane{display:none;} .pane.active{display:block;}

table{width:100%; border-collapse:collapse; font-size:13px; margin:16px 0;}
th,td{text-align:left; padding:10px; border-bottom:1px solid var(--border); vertical-align:middle;}
th{color:var(--muted); font-family:var(--mono); font-weight:500; font-size:11px; text-transform:uppercase; letter-spacing:.05em;}

.badge{font-family:var(--mono); font-size:11px; padding:2px 8px; border-radius:100px; background:var(--accent-dim); color:#d7fff9; display:inline-block;}

.warn{border:1px solid var(--warn); background:rgba(232,163,61,.08); border-radius:8px; padding:14px 16px; font-size:14px; color:var(--warn); margin:20px 0;}
.warn strong{color:var(--warn);}
.error{border:1px solid var(--danger); background:rgba(224,108,117,.08); border-radius:8px; padding:14px 16px; font-size:14px; color:var(--danger); margin:16px 0;}
.notice{border:1px solid #7ee787; background:rgba(126,231,135,.08); border-radius:8px; padding:14px 16px; font-size:14px; color:#7ee787; margin:16px 0;}

form.stacked label{display:block; font-family:var(--mono); font-size:12px; color:var(--muted); text-transform:uppercase; letter-spacing:.05em; margin-top:14px;}
form.stacked input[type=text], form.stacked input[type=password], form.stacked textarea, form.stacked select{
  width:100%; box-sizing:border-box; padding:10px; margin-top:6px; background:var(--panel-2); color:var(--text);
  border:1px solid var(--border); border-radius:6px; font-family:var(--sans); font-size:14px;
}
form.stacked textarea{min-height:70px; resize:vertical;}
form.stacked input[type=file]{margin-top:6px; font-size:13px; color:var(--muted);}
.radiogroup{display:flex; gap:16px; margin-top:8px; font-family:var(--mono); font-size:13px; flex-wrap:wrap;}
.radiogroup label{display:flex; align-items:center; gap:6px; text-transform:none; color:var(--text); font-family:var(--sans);}

button.btn{margin-top:18px; padding:10px 20px; background:var(--accent); color:var(--bg); border:none; border-radius:6px; font-size:14px; font-weight:600; cursor:pointer; font-family:var(--sans);}
button.btn:hover{opacity:.9;}
button.btn.danger{background:var(--danger); color:#1a0b0c;}
button.btn.small{padding:6px 12px; font-size:12px; margin-top:0;}
button.btn.secondary{background:var(--panel-2); color:var(--text); border:1px solid var(--border);}
button.btn.secondary:hover{border-color:var(--accent-dim); opacity:1;}

.dl-row{display:flex; align-items:center; justify-content:space-between; gap:12px;}
footer.site{margin-top:60px; padding-top:24px; border-top:1px solid var(--border); color:var(--muted); font-size:12px; font-family:var(--mono);}

/* ---------------- Landing page ---------------- */

.landing-hero{
  padding:64px 0 32px;
  text-align:center;
  position:relative;
}
.landing-hero::before{
  content:'';
  position:absolute; top:-20px; left:50%; transform:translateX(-50%);
  width:600px; height:280px; max-width:100%;
  background:radial-gradient(ellipse at center, rgba(79,209,197,.12) 0%, rgba(79,209,197,0) 70%);
  pointer-events:none; z-index:-1;
}
.landing-hero .eyebrow{ text-align:center; }
.hero-title{
  font-family:var(--mono); font-weight:600; letter-spacing:-0.015em;
  font-size:clamp(22px, 4.2vw, 38px); line-height:1.25; margin:0 0 20px;
  background:linear-gradient(180deg, #f1f5f9 0%, #a9b6c4 100%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
  overflow-wrap:break-word; word-break:normal; hyphens:auto;
  padding:0 8px;
}
.hero-lede{
  color:var(--muted); font-size:17px; max-width:560px; margin:0 auto 32px; line-height:1.6;
}
.hero-cta{display:flex; gap:12px; justify-content:center; flex-wrap:wrap; margin-bottom:56px;}
.btn-cta{
  font-family:var(--sans); font-weight:600; font-size:14px; padding:12px 22px; border-radius:8px;
  display:inline-flex; align-items:center; gap:8px; transition:transform .15s, box-shadow .15s;
}
.btn-cta:hover{text-decoration:none; transform:translateY(-1px);}
.btn-cta.primary{background:var(--accent); color:var(--bg); box-shadow:0 0 0 1px var(--accent), 0 8px 24px -8px rgba(79,209,197,.55);}
.btn-cta.primary:hover{box-shadow:0 0 0 1px var(--accent), 0 12px 28px -6px rgba(79,209,197,.7);}
.btn-cta.secondary{background:var(--panel); color:var(--text); border:1px solid var(--border);}
.btn-cta.secondary:hover{border-color:var(--accent-dim);}
.btn-cta .badge{margin-left:2px;}

/* Animated hero connection diagram */
.hero-diagram{
  display:flex; align-items:center; justify-content:center; gap:0; flex-wrap:nowrap;
  max-width:760px; margin:0 auto;
}
.hd-node{
  background:var(--panel); border:1px solid var(--border); border-radius:10px;
  padding:16px 14px; width:150px; flex:0 0 150px; text-align:center; font-family:var(--mono);
}
.hd-node.accent{ border-color:var(--accent-dim); box-shadow:0 0 0 1px var(--accent-dim), 0 0 24px -8px rgba(79,209,197,.5); }
.hd-icon{ font-size:20px; color:var(--accent); margin-bottom:6px; }
.hd-label{ font-size:13px; font-weight:600; color:var(--text); }
.hd-sub{ font-size:10px; color:var(--muted); margin-top:4px; text-transform:uppercase; letter-spacing:.04em; }

.hd-link{ position:relative; width:90px; flex:0 0 90px; height:20px; }
.hd-link svg{ width:100%; height:100%; overflow:visible; }
.hd-link line{ stroke:var(--border); stroke-width:1.5; }
.hd-dot{
  position:absolute; top:50%; left:0; width:5px; height:5px; border-radius:50%;
  background:var(--accent); transform:translateY(-50%);
  box-shadow:0 0 6px 1px rgba(79,209,197,.8);
  animation:travel 2.6s linear infinite;
}
.hd-dot.d2{ animation-delay:1.3s; }
.hd-dot.d3{ animation-delay:.5s; }
.hd-dot.d4{ animation-delay:1.8s; }
@keyframes travel{
  0%{ left:0%; opacity:0; }
  8%{ opacity:1; }
  92%{ opacity:1; }
  100%{ left:100%; opacity:0; }
}
.hd-code{
  position:absolute; bottom:-18px; left:50%; transform:translateX(-50%);
  font-size:10px; color:var(--muted); white-space:nowrap;
}
@media (prefers-reduced-motion: reduce){
  .hd-dot{ animation:none; opacity:.6; left:50%; }
}
@media (max-width:640px){
  .hero-diagram{ flex-direction:column; }
  .hd-node{ width:200px; flex:0 0 auto; }
  .hd-link{ width:20px; flex:0 0 40px; height:40px; transform:rotate(90deg); }
}

/* How it works */
.how{ margin-top:24px; }
.section-title{
  font-family:var(--mono); font-size:22px; text-align:center; margin:0 0 36px; font-weight:600;
}
.how-grid{ display:grid; grid-template-columns:repeat(4, 1fr); gap:16px; }
@media (max-width:820px){ .how-grid{ grid-template-columns:repeat(2, 1fr); } }
@media (max-width:520px){ .how-grid{ grid-template-columns:1fr; } }
.how-step{
  background:var(--panel); border:1px solid var(--border); border-radius:10px; padding:22px;
  transition:border-color .15s;
}
.how-step:hover{ border-color:var(--accent-dim); }
.how-n{ font-family:var(--mono); font-size:12px; color:var(--accent); margin-bottom:10px; letter-spacing:.05em; }
.how-step h3{ font-family:var(--sans); font-size:15px; margin:0 0 8px; color:var(--text); }
.how-step p{ font-size:13px; color:var(--muted); margin:0; line-height:1.55; }

/* Feature grid */
.features{
  display:grid; grid-template-columns:repeat(4, 1fr); gap:1px;
  background:var(--border); border:1px solid var(--border); border-radius:10px; overflow:hidden;
  margin-top:64px;
}
@media (max-width:820px){ .features{ grid-template-columns:repeat(2, 1fr); } }
@media (max-width:520px){ .features{ grid-template-columns:1fr; } }
.feature{ background:var(--panel); padding:26px 20px; }
.f-icon{ font-size:22px; color:var(--accent); margin-bottom:10px; }
.feature h4{ font-family:var(--sans); font-size:14px; margin:0 0 8px; color:var(--text); }
.feature p{ font-size:12.5px; color:var(--muted); margin:0; line-height:1.55; }

/* Bottom CTA band */
.landing-footer-cta{
  text-align:center; margin-top:72px; padding:48px 24px; border-radius:14px;
  background:linear-gradient(180deg, var(--panel) 0%, var(--panel-2) 100%);
  border:1px solid var(--border);
}
.landing-footer-cta h2{ font-family:var(--mono); font-size:22px; margin:0 0 10px; border:none; padding:0; }
.landing-footer-cta p{ color:var(--muted); font-size:14px; max-width:480px; margin:0 auto 26px; }