/* =========================================================
   日志采集与监控 Agent - 官网样式
   智能采集探针主题 | Intelligent Agent Theme
   ========================================================= */
:root{
  --bg:#0b0d12;
  --bg-2:#11141c;
  --panel:#151922;
  --panel-2:#1a202b;
  --line:#232b39;
  --line-2:#303b4e;
  --text:#eef1f6;
  --muted:#8b96a8;
  --accent:#f59e0b;
  --accent-2:#fbbf24;
  --orange:#fb923c;
  --green:#34d399;
  --grad:linear-gradient(135deg,#f59e0b 0%,#fb7185 100%);
  --grad-2:linear-gradient(135deg,#fbbf24 0%,#fb923c 100%);
  --radius:16px;
  --shadow:0 10px 40px rgba(245,158,11,.08);
  --font:"Segoe UI",-apple-system,BlinkMacSystemFont,"Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono","Consolas",monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--accent);text-decoration:none;transition:.2s}
img{max-width:100%;display:block}
ul{list-style:none}
.container{width:min(1200px,92%);margin:0 auto}
.section-pad{padding:96px 0}

/* ---------- Grid / radar background ---------- */
.radar-bg{position:fixed;inset:0;z-index:-2;background:
  radial-gradient(circle at 20% 20%,rgba(245,158,11,.10),transparent 40%),
  radial-gradient(circle at 80% 0%,rgba(251,113,133,.08),transparent 35%),
  var(--bg)}
.radar-bg::before{content:"";position:absolute;inset:0;background-image:
  radial-gradient(rgba(245,158,11,.06) 1px,transparent 1px);background-size:28px 28px;
  mask-image:radial-gradient(ellipse at center,black 30%,transparent 75%)}

/* ---------- Navbar ---------- */
.nav{position:sticky;top:0;z-index:100;background:rgba(11,13,18,.85);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);height:70px}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:12px;color:var(--text)}
.logo-mark{width:38px;height:38px;border-radius:100px;background:var(--grad);display:grid;place-items:center;
  font-weight:800;font-size:16px;color: rgba(245, 158, 11, 0.4);box-shadow:0 0 44px rgba(245,158,11,.6);font-family:var(--mono)}
.logo b{font-size:17px;letter-spacing:.5px}
.logo small{display:block;font-size:11px;color:var(--muted);font-weight:400;letter-spacing:1px}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{color:var(--muted);font-size:14px;font-weight:500}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-links a.active{color:var(--accent)}
.btn-nav{background:var(--grad);color:#1a1200!important;padding:9px 20px;border-radius:8px;font-weight:700}
.nav-toggle{display:none;background:none;border:1px solid var(--line);color:var(--text);font-size:22px;
  width:42px;height:42px;border-radius:8px;cursor:pointer}

/* ---------- Hero ---------- */
.hero{position:relative;padding:110px 0 96px;overflow:hidden}
.hero .container{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.badge{display:inline-flex;align-items:center;gap:8px;background:rgba(245,158,11,.08);border:1px solid rgba(245,158,11,.3);
  color:var(--accent);padding:6px 16px;border-radius:100px;font-size:13px;font-weight:600;margin-bottom:22px}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 12px var(--green);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.hero h1{font-size:clamp(32px,5vw,52px);line-height:1.15;font-weight:800;letter-spacing:-1px;margin-bottom:22px}
.hero h1 em{font-style:normal;background:var(--grad-2);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--muted);font-size:17px;max-width:540px;margin-bottom:32px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 30px;border-radius:10px;font-weight:700;font-size:15px;cursor:pointer;border:none}
.btn-primary{background:var(--grad);color:#1a1200;box-shadow:0 8px 26px rgba(245,158,11,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(245,158,11,.5)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line-2)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.hero-stats{display:flex;gap:36px;margin-top:40px}
.hero-stats .num{font-size:28px;font-weight:800;color:var(--text);font-family:var(--mono)}
.hero-stats .num span{color:var(--accent)}
.hero-stats .lab{font-size:13px;color:var(--muted)}

/* Hero visual (radar agent) */
.radar{position:relative;width:340px;height:340px;margin:0 auto;border-radius:50%;
  background:radial-gradient(circle,var(--panel-2),var(--bg-2));border:1px solid var(--line-2);overflow:hidden}
.radar::before{content:"";position:absolute;inset:0;background:repeating-radial-gradient(circle,transparent 0 32px,rgba(245,158,11,.08) 33px 34px);
  border-radius:50%}
.radar::after{content:"";position:absolute;left:50%;top:50%;width:1px;height:50%;background:linear-gradient(var(--accent),transparent);
  transform-origin:top;animation:scan 3.5s linear infinite}
@keyframes scan{to{transform:rotate(360deg)}}
.radar-line{position:absolute;left:50%;top:50%;width:1px;height:100%;background:rgba(245,158,11,.08);transform:translate(-50%,-50%)}
.radar-line.r2{transform:translate(-50%,-50%) rotate(60deg)}
.radar-line.r3{transform:translate(-50%,-50%) rotate(120deg)}
.blip{position:absolute;width:10px;height:10px;border-radius:50%;background:var(--green);box-shadow:0 0 14px var(--green);animation:blink 1.6s infinite}
.blip.b1{left:28%;top:34%;animation-delay:.2s}
.blip.b2{left:64%;top:48%;background:var(--accent);box-shadow:0 0 14px var(--accent);animation-delay:.7s}
.blip.b3{left:46%;top:68%;background:var(--orange);box-shadow:0 0 14px var(--orange);animation-delay:1.1s}
.blip.b4{left:72%;top:24%;animation-delay:1.4s}
.radar-center{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:64px;height:64px;border-radius:50%;
  background:var(--grad);display:grid;place-items:center;font-size:28px;color:#1a1200;box-shadow:0 0 30px rgba(245,158,11,.5)}

/* ---------- Section headers ---------- */
.sec-head{text-align:center;max-width:760px;margin:0 auto 60px}
.sec-eyebrow{color:var(--accent);font-size:13px;font-weight:700;letter-spacing:3px;text-transform:uppercase;margin-bottom:12px;display:inline-flex;align-items:center;gap:10px}
.sec-eyebrow::before,.sec-eyebrow::after{content:"";width:28px;height:1px;background:var(--accent);opacity:.5}
.sec-head h2{font-size:clamp(26px,4vw,40px);font-weight:800;margin-bottom:16px;letter-spacing:-.5px}
.sec-head p{color:var(--muted);font-size:16px}

/* ---------- Feature cards ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.3s}
.feature-card:hover{transform:translateY(-6px);border-color:var(--line-2);box-shadow:var(--shadow)}
.feature-card .ic{width:50px;height:50px;border-radius:12px;background:rgba(245,158,11,.12);border:1px solid rgba(245,158,11,.25);
  display:grid;place-items:center;font-size:24px;color:var(--accent);margin-bottom:16px}
.feature-card h3{font-size:17px;margin-bottom:8px}
.feature-card p{color:var(--muted);font-size:14px}

/* ---------- Log collection ---------- */
.logs{background:var(--bg-2);border-block:1px solid var(--line)}
.log-cats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.log-cat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.log-cat .ic{font-size:26px;margin-bottom:12px;color:var(--accent)}
.log-cat h3{font-size:16px;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.log-cat ul li{font-size:13px;color:var(--muted);padding:4px 0;border-bottom:1px dashed var(--line)}
.log-cat ul li:last-child{border-bottom:none}

/* ---------- Security & protection ---------- */
.sec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.sec-item{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:20px;display:flex;gap:14px;align-items:flex-start}
.sec-item .ic{flex-shrink:0;width:40px;height:40px;border-radius:10px;background:rgba(52,211,153,.12);border:1px solid rgba(52,211,153,.25);
  display:grid;place-items:center;color:var(--green);font-size:20px}
.sec-item h4{font-size:15px;margin-bottom:4px}
.sec-item p{font-size:13px;color:var(--muted)}

/* ---------- Monitor table ---------- */
.monitor{background:var(--bg-2);border-block:1px solid var(--line)}
.monitor-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:start}
.monitor-block{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.monitor-block h3{font-size:17px;margin-bottom:16px;display:flex;align-items:center;gap:8px;color:var(--accent)}
.monitor-block ul{columns:2;-webkit-columns:2}
.monitor-block ul li{font-size:13.5px;color:var(--muted);padding:5px 0;break-inside:avoid}
.monitor-block ul li::before{content:"▸ ";color:var(--accent)}

/* ---------- Platforms ---------- */
.platforms{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.platforms span{background:var(--panel);border:1px solid var(--line-2);border-radius:100px;padding:9px 20px;font-size:14px;color:var(--text)}
.platforms span b{color:var(--accent)}
.lang-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:22px}
.lang-tags span{background:rgba(245,158,11,.1);border:1px solid rgba(245,158,11,.3);color:var(--accent);
  border-radius:8px;padding:8px 18px;font-family:var(--mono);font-weight:700;font-size:14px}

/* ---------- Compatibility table ---------- */
.compat{background:var(--bg-2);border-block:1px solid var(--line)}
.compat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.compat-item{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px}
.compat-item h4{font-size:15px;margin-bottom:10px;color:var(--accent)}
.compat-item ul li{font-size:12.5px;color:var(--muted);padding:3px 0}

/* ---------- CTA ---------- */
.cta{position:relative;overflow:hidden;text-align:center;padding:90px 0}
.cta .container{position:relative;z-index:1}
.cta h2{font-size:clamp(28px,4vw,44px);font-weight:800;margin-bottom:16px}
.cta p{color:var(--muted);font-size:17px;max-width:600px;margin:0 auto 34px}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 100%,rgba(245,158,11,.14),transparent 60%)}

/* ---------- Footer ---------- */
.footer{background:#07090d;border-top:1px solid var(--line);padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:44px}
.footer .about{color:var(--muted);font-size:14px;margin-top:16px;line-height:1.9}
.footer h4{font-size:15px;margin-bottom:16px}
.footer a{color:var(--muted);font-size:14px;display:block;padding:5px 0}
.footer a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--line);padding-top:24px;text-align:center;color:var(--muted);font-size:13px}

/* ---------- Responsive ---------- */
@media(max-width:1024px){
  .feature-grid,.log-cats,.sec-grid,.compat-grid{grid-template-columns:repeat(2,1fr)}
  .monitor-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  .nav-links{position:fixed;top:70px;left:0;right:0;background:var(--bg-2);flex-direction:column;gap:0;
    padding:0;border-bottom:1px solid var(--line);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:16px 24px;width:100%;border-bottom:1px solid var(--line)}
  .nav-toggle{display:block}
  .hero{padding:70px 0 60px}
  .hero .container{grid-template-columns:1fr;gap:36px}
  .hero-stats{flex-wrap:wrap;gap:24px}
  .feature-grid,.log-cats,.sec-grid,.compat-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .monitor-block ul{columns:1;-webkit-columns:1}
}
@media(max-width:480px){
  .feature-grid,.log-cats,.sec-grid,.compat-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}