:root{
  --bg:#ffffff;--soft:#f3f6fb;--panel:#ffffff;--ink:#1f2937;--mute:#6b7280;--line:#e3e8ef;
  --brand:#2563eb;--brand-ink:#ffffff;--brand-soft:#e8efff;
  --ok:#16a34a;--ok-soft:#e7f7ec;--warn:#b45309;--warn-soft:#fff7ed;--bad:#dc2626;--puff:#f97316;
  padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)
}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#14171c;--soft:#1b1f26;--panel:#1f242c;--ink:#e6e9ee;--mute:#9aa3af;--line:#313843;
  --brand:#6b9bff;--brand-ink:#0d1a33;--brand-soft:#22304d;--ok:#4ade80;--ok-soft:#1c3326;--warn:#fbbf24;--warn-soft:#3a2a12;--bad:#f87171;--puff:#fb923c}}
:root[data-theme="dark"]{
  --bg:#14171c;--soft:#1b1f26;--panel:#1f242c;--ink:#e6e9ee;--mute:#9aa3af;--line:#313843;
  --brand:#6b9bff;--brand-ink:#0d1a33;--brand-soft:#22304d;--ok:#4ade80;--ok-soft:#1c3326;--warn:#fbbf24;--warn-soft:#3a2a12;--bad:#f87171;--puff:#fb923c}
*{box-sizing:border-box}
html{scroll-padding-top:calc(70px + env(safe-area-inset-top,0px))}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.7 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
a{color:var(--brand)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px}

/* Header + footer (same as home page) */
header{position:sticky;top:0;z-index:5;background:var(--soft);border-bottom:1px solid var(--line)}
.bar{max-width:1100px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.logo{font-weight:800;font-size:22px;color:var(--ink);display:flex;align-items:center;gap:8px;text-decoration:none;line-height:1.2}
.logo .e{color:var(--brand)}.logo .p{color:var(--puff)}
.logo svg{width:26px;height:26px}
nav{display:flex;gap:18px;align-items:center;font-weight:500;font-size:16px}
nav a{text-decoration:none}nav a:hover{text-decoration:underline}
nav a[aria-current="page"]{color:var(--ink)}
nav button{background:none;border:0;cursor:pointer;color:var(--mute);padding:4px;display:flex}
@media(max-width:560px){nav a.hide{display:none}}
footer{margin-top:56px;border-top:1px solid var(--line);background:var(--soft);color:var(--mute);font-size:14px;line-height:1.6}
footer .bar{flex-direction:column;justify-content:center;text-align:center;gap:8px;padding:22px 16px}
.flinks{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 20px;font-size:15px}
.flinks a{text-decoration:none}.flinks a:hover{text-decoration:underline}

/* Article content */
main{max-width:760px;margin:0 auto;padding:28px 16px 0}
.crumb{font-size:14px;color:var(--mute);margin-bottom:10px}
.crumb a{color:var(--mute)}
h1{font-size:clamp(28px,4.6vw,38px);line-height:1.2;margin:0 0 10px;letter-spacing:-.3px}
.meta{color:var(--mute);font-size:15px;margin:0 0 26px}
.lead{font-size:19px;color:var(--ink);margin:0 0 24px}
h2{font-size:24px;line-height:1.3;margin:38px 0 10px}
h3{font-size:19px;margin:26px 0 6px}
p{margin:0 0 16px}
ul,ol{padding-left:24px;margin:0 0 18px}
li{margin-bottom:6px}
code{font-family:inherit;background:var(--soft);border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:.92em;word-break:break-all}
.note{border-left:4px solid var(--brand);background:var(--brand-soft);border-radius:0 10px 10px 0;padding:12px 16px;margin:0 0 20px}
.note.warn{border-color:var(--warn);background:var(--warn-soft)}
.note p:last-child{margin:0}
.tbl{width:100%;border-collapse:collapse;margin:0 0 20px;font-size:16px}
.tbl th,.tbl td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl th{font-size:14px;color:var(--mute);font-weight:600;background:var(--soft)}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;border-radius:999px;padding:1px 10px;white-space:nowrap}
.badge::before{content:"";width:8px;height:8px;border-radius:50%;background:currentColor}
.badge.active{color:var(--ok);background:var(--ok-soft)}
.badge.maintenance{color:var(--warn);background:var(--warn-soft)}
.badge.off{color:var(--bad);background:var(--soft)}
.cta{display:inline-block;background:var(--brand);color:var(--brand-ink);text-decoration:none;font-weight:600;border-radius:10px;padding:11px 20px;margin:4px 0 18px}
.cta:hover{filter:brightness(1.08)}
.related{margin-top:44px;border-top:1px solid var(--line);padding-top:18px}
.related h2{font-size:19px;margin:0 0 10px}
.related ul{list-style:none;padding:0}
.related li{margin-bottom:8px}

/* Tools */
.tool{border:1px solid var(--line);background:var(--panel);border-radius:14px;padding:18px;margin:0 0 26px;box-shadow:0 6px 20px rgba(30,50,90,.06)}
.tool label{display:block;font-weight:600;font-size:15px;margin-bottom:6px}
.tool .row{display:flex;gap:8px;flex-wrap:wrap}
.tool input,.tool textarea,.tool select{width:100%;border:1px solid var(--line);background:var(--soft);border-radius:10px;padding:10px 12px;font-size:17px}
.tool textarea{min-height:110px;resize:vertical}
.tool .row input{flex:1 1 220px;width:auto}
.btn{border:1px solid var(--line);background:var(--panel);border-radius:10px;padding:10px 16px;cursor:pointer;font-weight:500}
.btn:hover{background:var(--soft)}
.btn.p{background:var(--brand);border-color:var(--brand);color:var(--brand-ink);font-weight:600}
.btn.p:hover{filter:brightness(1.08);background:var(--brand)}
.out{margin-top:14px}
.out .item{display:flex;justify-content:space-between;align-items:center;gap:10px;border:1px solid var(--line);border-radius:10px;padding:8px 8px 8px 12px;margin-bottom:6px;background:var(--soft)}
.out .item span{word-break:break-all;font-size:16px}
.out .item button{flex:none;padding:6px 12px;font-size:14px}
.err{color:var(--bad);font-size:15px;margin-top:8px}
.small{font-size:14px;color:var(--mute)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-grid .full{grid-column:1/-1}
@media(max-width:560px){.form-grid{grid-template-columns:1fr}}

/* Blog index */
.posts{display:grid;gap:14px;margin-top:8px}
.post{display:block;border:1px solid var(--line);border-radius:14px;padding:16px 18px;text-decoration:none;color:var(--ink);background:var(--panel)}
.post:hover{border-color:var(--brand);background:var(--brand-soft)}
.post .tag{font-size:13px;font-weight:600;color:var(--brand)}
.post h2{font-size:20px;margin:2px 0 4px}
.post p{margin:0;color:var(--mute);font-size:16px}
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%) translateY(120px);background:var(--ink);color:var(--bg);padding:10px 18px;border-radius:10px;font-size:15px;transition:transform .25s;z-index:20;max-width:calc(100% - 32px);text-align:center}
.toast.on{transform:translateX(-50%) translateY(0)}
@media(prefers-reduced-motion:reduce){.toast{transition:none}}
@media(max-width:560px){.tbl{display:block;overflow-x:auto;font-size:15px}.tbl th,.tbl td{padding:8px 10px;min-width:110px}}