/* dn-binance.com — datadog-style reskin stylesheet */
:root{
  --purple:#632CA6;          /* datadog primary purple */
  --purple-deep:#4a1f7c;
  --purple-bright:#7b3fd4;
  --purple-glow:#9b6cf2;
  --blue:#3b5bdb;            /* gradient companion */
  --magenta:#c026d3;
  --ink:#1a0e2e;             /* near-black footer/dark sections */
  --ink-2:#0f0820;
  --txt:#181818;            /* near-black body text */
  --txt-soft:#5b5b66;
  --txt-mute:#8a8a96;
  --txt-inv:#f4f1fa;
  --txt-inv-soft:#c3bcd6;
  --bg:#ffffff;
  --bg-soft:#f6f4fb;
  --bg-grey:#f4f4f6;
  --line:rgba(255,255,255,.10);
  --line-d:#e6e3ee;
  --radius:14px;
  --radius-s:8px;
  --shadow:0 30px 70px rgba(60,30,110,.18);
  --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei",-apple-system,"Segoe UI",system-ui,Roboto,Helvetica,Arial,sans-serif;
  color:var(--txt);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-wrap:break-word;
  word-break:break-word;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- announcement bar (datadog top strip) ---------- */
.ribbon{
  background:#160b29;
  color:#fff;font-size:13px;text-align:center;padding:9px 16px;letter-spacing:.1px;font-weight:600;
}
.ribbon b{color:var(--purple-glow)}
.ribbon a{text-decoration:underline}

/* ---------- nav (sticky, white, multi-level menu) ---------- */
.nav{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line-d);
}
.nav .inner{display:flex;align-items:center;gap:28px;height:62px}
.brand{display:flex;align-items:center}
.menu{display:flex;gap:24px;margin-left:6px;align-items:center}
.menu>a{color:#2a2535;font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:5px;padding:6px 0}
.menu>a::after{content:"";width:7px;height:7px;border-right:2px solid #b0a8c2;border-bottom:2px solid #b0a8c2;transform:rotate(45deg);margin-top:-3px;opacity:.8}
.menu>a.plain::after{display:none}
.menu>a:hover{color:var(--purple)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:18px}
.nav-right .txtlink{font-size:14px;color:#2a2535;font-weight:600}
.nav-right .txtlink:hover{color:var(--purple)}
.lang{font-size:13px;color:var(--txt-soft);font-weight:600}
.lang:hover{color:var(--purple)}
.nav-search{width:18px;height:18px;stroke:#6a6478;stroke-width:2;fill:none}

/* ---------- buttons (datadog rounded-square purple) ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:14px;border:0;cursor:pointer;
  padding:13px 24px;border-radius:6px;min-height:46px;line-height:1.1;
  transition:transform .14s ease,box-shadow .14s ease,background .14s ease,color .14s ease;
}
.btn-purple{background:var(--purple);color:#fff;box-shadow:0 6px 16px rgba(99,44,166,.28)}
.btn-purple:hover{background:var(--purple-deep);transform:translateY(-1px)}
.btn-ghost{background:transparent;border:1.5px solid var(--purple);color:var(--purple)}
.btn-ghost:hover{background:var(--purple);color:#fff}
.btn-outline-dark{background:transparent;border:1.5px solid #2a2535;color:#2a2535}
.btn-outline-dark:hover{background:#2a2535;color:#fff}
.btn-white{background:#fff;color:#1a0e2e;border:1.5px solid #fff}
.btn-white:hover{background:transparent;color:#fff}
.btn-ghost-inv{background:transparent;border:1.5px solid rgba(255,255,255,.5);color:#fff}
.btn-ghost-inv:hover{background:#fff;color:var(--purple)}
.btn-sm{padding:9px 16px;min-height:38px;font-size:13px}
.btn .arr{font-size:13px}

/* ---------- hero (white, centered, perspective dashboard) ---------- */
.hero{
  background:#fff;
  padding:64px 0 0;text-align:center;overflow:hidden;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
  color:var(--purple);background:rgba(99,44,166,.09);
  padding:6px 14px;border-radius:999px;margin-bottom:24px;letter-spacing:.02em;
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--purple-bright);display:inline-block}
.hero h1{
  font-size:clamp(32px,5.4vw,54px);line-height:1.1;margin:0 auto 18px;
  font-weight:800;letter-spacing:-1px;max-width:16ch;color:#1c1430;
}
.hero h1 em{font-style:normal;color:var(--purple)}
.hero .sub{font-size:clamp(16px,2.2vw,20px);color:var(--txt-soft);max-width:48ch;margin:0 auto 30px}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-note{margin-top:18px;font-size:12.5px;color:var(--txt-mute)}

/* perspective dashboard like datadog hero */
.shot{
  margin:54px auto 0;max-width:1020px;
  perspective:1600px;
}
.shot-inner{
  border-radius:14px;overflow:hidden;
  box-shadow:var(--shadow);border:1px solid var(--line-d);background:#0b0f17;
  transform:rotateX(7deg);transform-origin:50% 100%;
}
.shot-inner svg{width:100%;height:auto;display:block}

/* ---------- logo wall (trusted) ---------- */
.trusted{padding:54px 0 60px;background:#fff;text-align:center}
.trusted p{color:var(--txt-mute);font-size:12px;letter-spacing:.2em;text-transform:uppercase;margin:0 0 30px;font-weight:700}
.logos{display:flex;flex-wrap:wrap;gap:34px 56px;justify-content:center;align-items:center}
.logos .lg{display:flex;align-items:center;gap:9px;color:#3a3346;font-weight:800;font-size:19px;opacity:.82}
.logos .lg svg{width:30px;height:30px}

/* ---------- purple feature band (datadog DASH / Forrester band) ---------- */
.feat-band{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(110deg,#1b1140 0%,var(--purple-deep) 45%,var(--purple) 78%,var(--magenta) 130%);
}
.feat-band.alt{
  background:linear-gradient(110deg,#10082a 0%,#2a1560 50%,var(--purple) 105%);
}
.feat-band .inner{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding:54px 0;
}
.feat-band.flip .inner{direction:rtl}
.feat-band.flip .inner>*{direction:ltr}
.feat-band .tag{font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--purple-glow)}
.feat-band h2{font-size:clamp(24px,3.4vw,34px);font-weight:800;margin:14px 0 16px;line-height:1.18;color:#fff}
.feat-band p{color:var(--txt-inv-soft);font-size:16px;margin:0 0 22px;max-width:46ch}
.feat-band .more{color:#fff;font-weight:700;font-size:13px;letter-spacing:.04em;border-bottom:2px solid var(--purple-glow);padding-bottom:3px}
.feat-art{border-radius:12px;overflow:hidden;border:1px solid rgba(255,255,255,.14);box-shadow:0 24px 50px rgba(0,0,0,.4)}
.feat-art svg{width:100%;height:auto;display:block}

/* ---------- products: left list + right viz (datadog Products) ---------- */
.products{background:var(--ink);color:#fff;padding:66px 0}
.products>.wrap>.tag{font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--purple-glow)}
.products h2{font-size:clamp(26px,3.6vw,38px);font-weight:800;margin:10px 0 36px;color:#fff}
.prod-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
.prod-list{display:grid;gap:0}
.prod-item{border-top:1px solid rgba(255,255,255,.12);padding:18px 4px}
.prod-item:last-child{border-bottom:1px solid rgba(255,255,255,.12)}
.prod-item summary{
  list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:14px;
  font-weight:700;font-size:17px;color:#fff;
}
.prod-item summary::-webkit-details-marker{display:none}
.prod-item summary .pi{width:24px;height:24px;flex:0 0 auto;stroke:var(--purple-glow);stroke-width:2;fill:none}
.prod-item summary .chev{margin-left:auto;width:14px;height:14px;border-right:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(45deg);transition:transform .2s;opacity:.7}
.prod-item[open] summary .chev{transform:rotate(-135deg)}
.prod-body{padding:12px 0 4px 38px;color:var(--txt-inv-soft);font-size:14.5px}
.prod-body .more{display:inline-block;margin-top:10px;color:#fff;font-weight:700;font-size:13px;border-bottom:2px solid var(--purple-glow);padding-bottom:2px}
.prod-viz{border-radius:12px;overflow:hidden;background:#fff;border:1px solid rgba(255,255,255,.12);box-shadow:0 24px 50px rgba(0,0,0,.4)}
.prod-viz svg{width:100%;height:auto;display:block}

/* ---------- two-column promo cards (datadog Careers / Report) ---------- */
.promos{padding:0;background:#fff}
.promo-row{display:grid;grid-template-columns:1fr 1fr}
.promo{position:relative;min-height:300px;display:flex;align-items:center;overflow:hidden}
.promo .pc{padding:48px;max-width:480px;margin:0 auto}
.promo .tag{font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase}
.promo h3{font-size:clamp(22px,2.8vw,30px);font-weight:800;margin:10px 0 12px;line-height:1.2}
.promo p{font-size:15.5px;margin:0 0 18px}
.promo .more{font-weight:700;font-size:13px;letter-spacing:.04em;padding-bottom:3px}
/* dark report card (gradient) */
.promo.dark{background:linear-gradient(130deg,#3a1d6e,var(--purple) 60%,var(--magenta));color:#fff}
.promo.dark .tag{color:var(--purple-glow)}
.promo.dark p{color:var(--txt-inv-soft)}
.promo.dark .more{color:#fff;border-bottom:2px solid var(--purple-glow)}
/* light careers card */
.promo.light{background:#fff;color:#1c1430;border:1px solid var(--line-d)}
.promo.light .tag{color:var(--txt-mute)}
.promo.light p{color:var(--txt-soft)}
.promo.light .more{color:var(--purple);border-bottom:2px solid var(--purple)}
/* illustration cards */
.promo.illo{padding:0}
.promo.illo svg{width:100%;height:100%;object-fit:cover;display:block}
.promo.illo.tall{min-height:300px}

/* feature card grid (light, datadog-ish info cards) */
.section{padding:70px 0}
.section.grey{background:var(--bg-soft)}
.shead{max-width:60ch;margin:0 auto 42px;text-align:center}
.shead .tag{font-size:12px;font-weight:800;color:var(--purple);letter-spacing:.14em;text-transform:uppercase}
.shead h2{font-size:clamp(26px,3.6vw,38px);margin:10px 0 12px;font-weight:800;letter-spacing:-.4px;color:#1c1430}
.shead p{color:var(--txt-soft);font-size:16px;margin:0}
.grid{display:grid;gap:1px;background:var(--line-d);border:1px solid var(--line-d);border-radius:var(--radius);overflow:hidden}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{background:#fff;padding:30px 26px;transition:background .16s ease}
.card:hover{background:var(--bg-soft)}
.card .ic{width:46px;height:46px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:rgba(99,44,166,.09);margin-bottom:16px}
.card .ic svg{width:24px;height:24px;stroke:var(--purple);stroke-width:2;fill:none}
.card h3{font-size:17px;margin:0 0 8px;font-weight:800;color:#1c1430}
.card p{color:var(--txt-soft);font-size:14.5px;margin:0}

/* platform download cards */
.plat{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.pcard{text-align:center;background:#fff;border:1px solid var(--line-d);border-radius:var(--radius);padding:28px 20px;transition:transform .16s,box-shadow .16s}
.pcard:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(60,30,110,.1)}
.pcard .ic{margin:0 auto 14px;width:50px;height:50px;display:flex;align-items:center;justify-content:center;border-radius:12px;background:rgba(99,44,166,.09)}
.pcard .ic svg{width:26px;height:26px;stroke:var(--purple);stroke-width:2;fill:none}
.pcard h3{margin:0 0 4px;font-size:16px;font-weight:800;color:#1c1430}
.pcard span{display:block;color:var(--txt-mute);font-size:13px;margin-bottom:18px}

/* steps */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{background:#fff;border:1px solid var(--line-d);border-radius:var(--radius);padding:28px}
.step::before{
  counter-increment:s;content:counter(s);
  display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;
  font-weight:800;color:#fff;background:var(--purple);margin-bottom:16px;font-size:18px;
}
.step h3{margin:0 0 8px;font-size:17px;font-weight:800;color:#1c1430}
.step p{margin:0;color:var(--txt-soft);font-size:14.5px}

/* faq */
.faq{max-width:840px;margin:0 auto;display:grid;gap:0}
.qa{border-bottom:1px solid var(--line-d)}
.qa summary{
  list-style:none;cursor:pointer;font-weight:700;font-size:16.5px;padding:22px 4px;color:#1c1430;
  display:flex;justify-content:space-between;gap:16px;align-items:center;
}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"";width:11px;height:11px;border-right:2px solid var(--purple);border-bottom:2px solid var(--purple);transform:rotate(45deg);flex:0 0 auto;margin-top:-4px;transition:transform .2s}
.qa[open] summary::after{transform:rotate(-135deg);margin-top:3px}
.qa p{margin:0 4px 22px;color:var(--txt-soft);font-size:15px}

/* ---------- diagonal gradient CTA band (datadog "Want to learn more") ---------- */
.cta-band{
  position:relative;overflow:hidden;text-align:center;color:#fff;padding:72px 24px;
  background:linear-gradient(115deg,var(--blue) 0%,var(--purple) 48%,var(--magenta) 100%);
}
.cta-band::before,.cta-band::after{
  content:"";position:absolute;top:0;bottom:0;width:32%;
  background:rgba(255,255,255,.06);transform:skewX(-18deg);
}
.cta-band::before{left:-8%}
.cta-band::after{right:-8%;background:rgba(0,0,0,.08)}
.cta-band .inner{position:relative;z-index:1;max-width:680px;margin:0 auto}
.cta-band h2{font-size:clamp(26px,3.6vw,38px);margin:0 0 14px;font-weight:800}
.cta-band p{color:rgba(255,255,255,.92);margin:0 auto 26px;font-size:17px;max-width:46ch}
.cta-band .hero-cta{justify-content:center}

/* ---------- footer (dark, multi-column) ---------- */
.foot{background:var(--ink-2);color:var(--txt-inv-soft);padding:56px 0 0}
.foot .cols{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr 1fr;gap:30px;padding-bottom:44px}
.foot .about{display:flex;flex-direction:column;gap:18px}
.foot .about .ftbtn{width:max-content}
.foot .about .dl{font-size:12px;color:var(--txt-mute);font-weight:700;text-transform:uppercase;letter-spacing:.1em;margin:8px 0 -6px}
.foot .stores{display:flex;gap:12px}
.foot .stores svg{width:26px;height:26px;opacity:.85}
.foot h4{color:#fff;font-size:12.5px;margin:0 0 16px;letter-spacing:.06em;text-transform:uppercase;border-bottom:1px solid var(--line);padding-bottom:12px}
.foot a{display:block;color:var(--txt-inv-soft);font-size:13.5px;padding:5px 0}
.foot a:hover{color:#fff}
.foot .about p{font-size:13.5px;line-height:1.7;margin:0;color:var(--txt-inv-soft)}
.disc{border-top:1px solid var(--line);padding:22px 0 28px;font-size:12px;color:#7a738c;line-height:1.7}
.disc .legal{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-bottom:14px}
.disc .legal a{display:inline;color:#9b93b0;font-weight:600}
.disc .legal .sp{color:#4a4458}
.disc .row{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:10px;align-items:center}
.disc .social{display:flex;gap:14px}
.disc .social svg{width:18px;height:18px;fill:#9b93b0}
.disc .social a:hover svg{fill:#fff}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .feat-band .inner,.prod-grid{grid-template-columns:1fr;gap:30px}
  .feat-band.flip .inner{direction:ltr}
  .promo-row{grid-template-columns:1fr}
  .promo.illo{min-height:220px}
  .plat{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot .cols{grid-template-columns:1fr 1fr 1fr}
  .foot .about{grid-column:1/-1}
}
@media(max-width:760px){
  .menu,.nav-right .txtlink,.nav-search{display:none}
  .g3{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .section{padding:52px 0}
  .hero{padding:48px 0 0}
  .shot{margin-top:38px}
  .shot-inner{transform:none}
  .products{padding:50px 0}
  .feat-band .inner{padding:40px 0}
  .foot .cols{grid-template-columns:1fr 1fr}
}
@media(max-width:430px){
  .wrap{padding:0 16px}
  .hero h1{font-size:30px;letter-spacing:-.5px}
  .hero .sub{font-size:16px}
  .btn{padding:12px 18px;font-size:13.5px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .promo .pc{padding:34px 24px}
  .feat-band h2,.products h2,.shead h2{letter-spacing:-.3px}
  .foot .cols{grid-template-columns:1fr 1fr}
  .disc .row{flex-direction:column;align-items:flex-start}
}