:root{
  --bg:#f5f7fb;--surface:#fff;--surface2:#eef2f8;--text:#0f172a;--muted:#5b6478;--line:#dde3ee;
  --accent:#2563eb;--accent2:#1d4ed8;--accent-soft:#dbe7ff;--ok:#16a34a;--ok-soft:#dcfce7;--warn:#b45309;--warn-soft:#fef3c7;
  --bad:#dc2626;--bad-soft:#fee2e2;--radius:12px;--shadow:0 1px 2px rgba(15,23,42,.06),0 4px 16px rgba(15,23,42,.05);
  --top:#0b1220;--top-text:#e2e8f0;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0b1020;--surface:#121a2e;--surface2:#18223a;--text:#e5e9f2;--muted:#94a0b8;--line:#25304a;
  --accent:#4f8bff;--accent2:#3b76f0;--accent-soft:#1c2c52;--ok:#34d399;--ok-soft:#0f2e25;--warn:#fbbf24;--warn-soft:#33270b;
  --bad:#f87171;--bad-soft:#3a1616;--shadow:none;--top:#070b16;
}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:15px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;display:flex;flex-direction:column}
a{color:var(--accent)}
h1{font-size:1.6rem;margin:0 0 .4em;line-height:1.2}
h2{font-size:1.2rem;margin:0 0 .6em}
h3{font-size:1rem;margin:0 0 .5em}
code,.mono{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.92em}
.wrap{max-width:1180px;margin:0 auto;padding:0 16px}
main{flex:1;width:100%;max-width:1180px;margin:0 auto;padding:24px 16px 48px}
main.narrow{max-width:520px}
.muted{color:var(--muted)}.small{font-size:.86rem}.right{text-align:right}.center{text-align:center}
/* top */
.top{background:var(--top);color:var(--top-text)}
.top-in{display:flex;align-items:center;gap:16px;min-height:60px}
.logo{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:700;font-size:1.05rem;margin-right:auto}
.logo svg{color:#60a5fa}.logo small{font-weight:500;color:#93c5fd;margin-left:4px}
.top nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.top nav a{color:var(--top-text);text-decoration:none;padding:8px 12px;border-radius:8px;font-size:.94rem}
.top nav a:hover,.top nav a.on{background:rgba(255,255,255,.08)}
.top nav a.dim{color:#94a3b8}
.top nav a.btn{color:#fff;background:var(--accent);margin-left:6px}
.navt{display:none;cursor:pointer;font-size:1.4rem;color:#fff;padding:6px}
@media (max-width:820px){
  .navt{display:block}.top-in{flex-wrap:wrap}
  .top nav{display:none;width:100%;flex-direction:column;align-items:stretch;padding-bottom:12px}
  #navt:checked~nav{display:flex}
}
/* elements */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);margin-bottom:16px}
.card.tight{padding:14px 16px}
.grid{display:grid;gap:16px;margin-bottom:16px}
.grid>.card,.grid>form.card,.grid>div>.card:last-child{margin-bottom:0}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:900px){.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.g2,.g3,.g4{grid-template-columns:1fr}}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.between{justify-content:space-between}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:9px;background:var(--accent);color:#fff;
  padding:10px 16px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn:hover{background:var(--accent2)}
.btn.sm{padding:6px 11px;font-size:.88rem}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn.ghost:hover{background:var(--surface2)}
.btn.danger{background:var(--bad)}
.btn.ok{background:var(--ok)}
.btn.block{width:100%}
label{display:block;font-weight:600;font-size:.9rem;margin:12px 0 5px}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=url],input[type=date],select,textarea{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:9px;background:var(--surface);color:var(--text);font:inherit}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:transparent}
.hint{font-size:.83rem;color:var(--muted);margin-top:4px}
.inp-group{display:flex;gap:6px}.inp-group input{flex:1;min-width:0}
.prefix{display:flex;align-items:stretch}.prefix span{padding:10px 10px;background:var(--surface2);border:1px solid var(--line);border-right:0;border-radius:9px 0 0 9px;color:var(--muted)}
.prefix input{border-radius:0 9px 9px 0}
.flash{margin:14px 0 0;padding:12px 14px;border-radius:10px;background:var(--ok-soft);color:var(--ok);font-weight:500}
.flash.bad{background:var(--bad-soft);color:var(--bad)}.flash.warn{background:var(--warn-soft);color:var(--warn)}
.badge{display:inline-block;padding:2px 9px;border-radius:99px;font-size:.78rem;font-weight:700;background:var(--surface2);color:var(--muted);white-space:nowrap}
.badge.ok{background:var(--ok-soft);color:var(--ok)}.badge.warn{background:var(--warn-soft);color:var(--warn)}
.badge.bad{background:var(--bad-soft);color:var(--bad)}.badge.live{background:var(--bad);color:#fff}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--muted);margin-right:6px;vertical-align:middle}
.dot.on{background:var(--ok);box-shadow:0 0 0 4px var(--ok-soft)}
table{width:100%;border-collapse:collapse}
th,td{padding:10px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
th{font-size:.8rem;text-transform:uppercase;letter-spacing:.03em;color:var(--muted);font-weight:600}
.table-wrap{overflow-x:auto;margin:0 -4px}
.kpi .v{font-size:1.7rem;font-weight:750;line-height:1.1}
.kpi .l{color:var(--muted);font-size:.85rem}
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--line);margin:8px 0 18px;overflow-x:auto}
.tabs a{padding:10px 14px;text-decoration:none;color:var(--muted);border-bottom:2px solid transparent;white-space:nowrap;font-weight:600}
.tabs a.on{color:var(--accent);border-color:var(--accent)}
.kv{display:grid;grid-template-columns:170px 1fr;gap:8px 14px;align-items:center}
@media (max-width:620px){.kv{grid-template-columns:1fr}.kv>div:nth-child(odd){color:var(--muted);font-size:.85rem;margin-top:6px}}
.kv>div:nth-child(odd){color:var(--muted)}
pre.code{background:var(--surface2);border:1px solid var(--line);padding:12px;border-radius:9px;overflow:auto;white-space:pre-wrap;word-break:break-all;margin:0}
.chart{width:100%;height:auto;display:block}
.chart .grid{stroke:var(--line);stroke-width:1}
.chart .lbl{fill:var(--muted);font-size:11px}
.chart .avg{fill:none;stroke:var(--accent);stroke-width:2;vector-effect:non-scaling-stroke}
.chart .peak{fill:none;stroke:var(--accent);stroke-opacity:.35;stroke-width:1;stroke-dasharray:3 3;vector-effect:non-scaling-stroke}
.chart .area{fill:var(--accent);fill-opacity:.12}
.chart .hit{fill:transparent}.chart .hit:hover{fill:var(--accent);fill-opacity:.08}
.bar{height:8px;background:var(--surface2);border-radius:9px;overflow:hidden}.bar i{display:block;height:100%;background:var(--accent);border-radius:9px}
.empty{text-align:center;padding:40px 20px;color:var(--muted)}
/* landing */
.hero{background:linear-gradient(160deg,#0b1220 0%,#132449 60%,#1d3a7a 100%);color:#fff;padding:72px 0 80px}
.hero h1{font-size:clamp(1.9rem,4.4vw,3rem);max-width:760px;letter-spacing:-.02em}
.hero p{font-size:1.12rem;color:#c7d2fe;max-width:620px}
.hero .row{margin-top:26px}
.hero .btn.ghost{color:#fff;border-color:rgba(255,255,255,.3)}
.hero .btn.ghost:hover{background:rgba(255,255,255,.08)}
.section{padding:56px 0}
.section h2{font-size:1.6rem;text-align:center;margin-bottom:8px}
.section .sub{text-align:center;color:var(--muted);margin:0 auto 32px;max-width:600px}
.toggle{display:inline-flex;background:var(--surface2);border-radius:99px;padding:4px;margin:0 auto 26px}
.toggle label{margin:0;padding:8px 18px;border-radius:99px;cursor:pointer;font-weight:600}
.toggle input{display:none}
.plans{max-width:1000px;margin:0 auto}
.plan{position:relative;display:flex;flex-direction:column}
.plan.featured{border:2px solid var(--accent)}
.plan .tag{position:absolute;top:-12px;left:20px;background:var(--accent);color:#fff;font-size:.75rem;padding:3px 10px;border-radius:99px;font-weight:700}
.plan .price{font-size:2rem;font-weight:800;margin:6px 0 0}
.plan .per{color:var(--muted);font-size:.9rem}
.plan ul{list-style:none;padding:0;margin:16px 0 20px;flex:1}
.plan li{padding:6px 0;border-bottom:1px dashed var(--line)}
.plan li:before{content:"✓";color:var(--ok);font-weight:800;margin-right:8px}
.p-year{display:none}
body.yearly .p-year{display:block}body.yearly .p-month{display:none}
.feat .ico{width:40px;height:40px;border-radius:10px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font-size:1.2rem;margin-bottom:10px}
details{border-bottom:1px solid var(--line);padding:14px 0}
details summary{cursor:pointer;font-weight:600}
.foot{border-top:1px solid var(--line);padding:20px 0;color:var(--muted);font-size:.88rem}
.foot .wrap{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
.choice{display:grid;gap:10px}
.choice label{display:flex;gap:12px;align-items:flex-start;border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin:0;cursor:pointer;font-weight:500}
.choice label:has(input:checked){border-color:var(--accent);background:var(--accent-soft)}
.choice input{margin-top:4px}
.np{font-size:1.05rem;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.stack>*+*{margin-top:12px}