:root {
  --bg: #0f1320;
  --panel: #181d2e;
  --panel2: #1f2538;
  --line: #2b3350;
  --text: #e7ebf5;
  --dim: #97a0bd;
  --accent: #5b8cff;
  --accent2: #7aa2ff;
  --ok: #2fbf71;
  --off: #8893ad;
  --danger: #e5484d;
  --radius: 12px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "Noto Sans Thai", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}
a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: #0b0e18; padding: 2px 7px; border-radius: 6px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .92em; }
h1 { font-size: 1.5rem; margin: .2rem 0 1rem; }
h2 { font-size: 1.2rem; margin: 1.4rem 0 .6rem; }
h3 { font-size: 1rem; margin: 0 0 .6rem; }
h4 { font-size: .95rem; margin: 1rem 0 .4rem; color: var(--accent2); }

.topbar {
  display: flex; align-items: center; gap: 1.2rem;
  padding: .7rem 1.2rem; background: var(--panel);
  border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 700; font-size: 1.05rem; color: var(--text); }
.right { margin-left: auto; display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.topbar nav { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.topbar nav a { color: var(--dim); font-size: .92rem; }
.topbar nav a:hover { color: var(--text); text-decoration: none; }
.who { color: var(--dim); font-size: .85rem; }
.lang { display: flex; align-items: center; gap: .35rem; font-size: .82rem; }
.lang a { color: var(--dim); }
.lang a.on { color: var(--accent2); font-weight: 700; }
.lang a:hover { color: var(--text); text-decoration: none; }
.lang span { color: var(--line); }
.foot-link { color: var(--dim); }
.foot-link:hover { color: var(--text); text-decoration: none; }

.container { max-width: 980px; margin: 0 auto; padding: 1.4rem 1.2rem 3rem; }
.foot { text-align: center; color: var(--dim); font-size: .8rem; padding: 1.5rem; }

.banner { padding: .7rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; font-size: .92rem; }
.banner.ok { background: rgba(47,191,113,.15); border: 1px solid var(--ok); }
.banner.err { background: rgba(229,72,77,.13); border: 1px solid var(--danger); }

.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.1rem 1.2rem; margin-bottom: 1rem;
}
.rowhead { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }

.form label { display: block; margin-bottom: .8rem; font-size: .9rem; color: var(--dim); }
.form input, .form select {
  display: block; width: 100%; margin-top: .3rem; padding: .6rem .7rem;
  background: #0b0e18; border: 1px solid var(--line); border-radius: 8px;
  color: var(--text); font-size: .95rem;
}
.form textarea {
  display: block; width: 100%; margin-top: .3rem; padding: .6rem .7rem;
  background: #0b0e18; border: 1px solid var(--line); border-radius: 8px;
  color: var(--text); font-size: .9rem; font-family: ui-monospace, Menlo, monospace; resize: vertical;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--accent); }
.form label.radio { display: flex; align-items: center; gap: .5rem; color: var(--text); }
.form label.radio input[type=radio] { width: auto; display: inline; margin: 0; }

button, .btn {
  display: inline-block; cursor: pointer; border: none; border-radius: 8px;
  padding: .6rem 1.1rem; font-size: .92rem; font-weight: 600;
  background: var(--accent); color: #fff;
}
button:hover, .btn:hover { background: var(--accent2); text-decoration: none; }
.btn.sm { padding: .35rem .7rem; font-size: .82rem; background: var(--panel2); color: var(--text); border: 1px solid var(--line); }
.btn.primary { background: var(--accent); }
.btn.danger, button.danger { background: var(--danger); }
.btn.danger:hover, button.danger:hover { background: #ff5c61; }
button.link { background: none; color: var(--dim); padding: 0; font-weight: 500; }
button.link:hover { color: var(--text); background: none; }
form.inline { display: inline; }

.auth { max-width: 380px; margin: 3rem auto; }
.auth .hint { color: var(--dim); font-size: .85rem; margin-top: 1rem; }

.stats { display: flex; gap: .8rem; flex-wrap: wrap; margin-bottom: 1.2rem; }
.stat {
  flex: 1; min-width: 130px; background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1rem; color: var(--dim); font-size: .85rem;
}
.stat .num { display: block; font-size: 1.8rem; font-weight: 700; color: var(--text); }
.stat.action { display: flex; align-items: center; justify-content: center; color: var(--accent2); font-weight: 600; }

table.grid { width: 100%; border-collapse: collapse; background: var(--panel); border-radius: var(--radius); overflow: hidden; }
.grid th, .grid td { text-align: left; padding: .7rem .9rem; border-bottom: 1px solid var(--line); font-size: .9rem; }
.grid th { color: var(--dim); font-weight: 600; font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; }
.grid tr.muted td { opacity: .55; }
.dim { color: var(--dim); }
.mono { font-family: ui-monospace, Menlo, monospace; font-size: .82rem; }

.tag { background: var(--panel2); border: 1px solid var(--line); padding: .12rem .55rem; border-radius: 20px; font-size: .78rem; color: var(--dim); }
.pill { padding: .12rem .6rem; border-radius: 20px; font-size: .78rem; font-weight: 600; }
.pill.ok { background: rgba(47,191,113,.18); color: #5fe0a0; }
.pill.off { background: rgba(136,147,173,.18); color: var(--off); }

.kv { display: flex; justify-content: space-between; gap: 1rem; padding: .4rem 0; border-bottom: 1px solid var(--line); font-size: .92rem; }
.kv:last-child { border-bottom: none; }
.kv > span:first-child { color: var(--dim); }
.kv code { cursor: pointer; }
.kv code[data-copy]:hover { outline: 1px solid var(--accent); }

.actions-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; margin: 1rem 0; }
.actions-grid .card { margin-bottom: 0; }
.card.danger { border-color: rgba(229,72,77,.4); }

.guide .conn-summary { margin-bottom: 1rem; }
.downloads { display: flex; align-items: flex-start; gap: 1.6rem; flex-wrap: wrap; margin-bottom: 1rem; }
.dl-buttons { display: flex; flex-direction: column; gap: .5rem; }
.note { background: rgba(229,72,77,.09); border: 1px solid rgba(229,72,77,.4); border-radius: 8px; padding: .55rem .8rem; font-size: .86rem; margin: .5rem 0 .3rem; }
.qr { display: flex; flex-direction: column; align-items: center; font-size: .78rem; gap: .3rem; }
.qr img { background: #fff; padding: 6px; border-radius: 8px; }
.tip { background: var(--panel2); border: 1px solid var(--line); border-radius: var(--radius); padding: .8rem 1rem; font-size: .9rem; }

details { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: .3rem 1rem; margin-bottom: .7rem; }
details summary { cursor: pointer; font-weight: 600; padding: .6rem 0; font-size: 1rem; }
details ol { margin: .3rem 0 .8rem; padding-left: 1.3rem; }
details li { margin-bottom: .35rem; font-size: .92rem; }

.copied { position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%); background: var(--ok); color: #fff; padding: .5rem 1rem; border-radius: 8px; font-size: .85rem; opacity: 0; transition: opacity .2s; pointer-events: none; }
.copied.show { opacity: 1; }

@media (max-width: 600px) {
  .topbar { flex-wrap: wrap; }
  .stats { flex-direction: column; }
}