:root{
  --bg:#0D1117;
  --bg2:#121A24;
  --card:#161F2A;
  --card2:#1C2734;
  --line:rgba(255,255,255,.08);
  --line2:rgba(255,255,255,.16);
  --txt:#E9EEF4;
  --txt2:#9AA7B6;
  --txt3:#71808F;
  --main:#FF7A2F;
  --main-d:#E05A12;
  --main-l:#FFB27A;
  --accent:#8B7BFF;
  --ink:#1A0F05;
  --r:16px;
  --wrap:1140px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--txt);
  font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
}
figure,figcaption,blockquote,dl,dd,table,p,ul,ol,h1,h2,h3,h4{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:var(--main-l);text-decoration:none}
a:hover{color:var(--main)}
summary{list-style:none;cursor:pointer}
summary::-webkit-details-marker{display:none}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 22px}
.kicker{
  display:inline-block;
  font-size:12.5px;
  letter-spacing:.16em;
  color:var(--main-l);
  background:rgba(255,122,47,.12);
  border:1px solid rgba(255,122,47,.3);
  border-radius:999px;
  padding:5px 13px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border:0;
  border-radius:999px;
  background:linear-gradient(135deg,var(--main),var(--main-d));
  color:var(--ink);
  font-size:15.5px;
  font-weight:700;
  font-family:inherit;
  letter-spacing:.02em;
  box-shadow:0 10px 26px rgba(255,122,47,.28);
  transition:transform .2s ease,box-shadow .2s ease;
}
.btn:hover{color:var(--ink);transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,122,47,.38)}
.btn--sm{padding:9px 18px;font-size:14px;box-shadow:none}
.btn--ghost{
  background:transparent;
  color:var(--txt);
  border:1px solid var(--line2);
  box-shadow:none;
  font-weight:600;
}
.btn--ghost:hover{color:var(--txt);background:rgba(255,255,255,.06);box-shadow:none}
.top .btn{color:var(--ink)}
.top .btn:hover{color:var(--ink)}

.top{
  position:sticky;
  top:0;
  z-index:40;
  background:rgba(13,17,23,.9);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
}
.top__in{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:9px 22px;
  display:flex;
  align-items:center;
  gap:16px;
}
.brand{display:inline-flex;align-items:center;gap:9px;flex:0 0 auto}
.brand img{width:38px;height:38px;border-radius:11px}
.brand__name{font-size:17px;font-weight:700;letter-spacing:.04em;color:var(--txt)}
.nav{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  flex:1 1 auto;
  min-width:0;
  overflow-x:auto;
  overflow-y:hidden;
  flex-wrap:nowrap;
  scrollbar-width:none;
}
.nav::-webkit-scrollbar{display:none}
.nav a{
  flex:0 0 auto;
  padding:7px 12px;
  border-radius:999px;
  color:var(--txt2);
  font-size:14px;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav a:hover{color:var(--txt);background:rgba(255,255,255,.07)}
.nav a[aria-current="page"]{
  color:var(--ink);
  font-weight:700;
  background:linear-gradient(135deg,var(--main),var(--main-l));
}

.hero{
  position:relative;
  overflow:hidden;
  background:
    radial-gradient(760px 420px at 12% -12%,rgba(255,122,47,.20),transparent 62%),
    radial-gradient(620px 460px at 96% 8%,rgba(139,123,255,.18),transparent 66%),
    linear-gradient(180deg,#0D1117,#101823 78%,#0D1117);
}
.hero::after{
  content:"";
  position:absolute;
  right:-140px;
  top:40px;
  width:420px;
  height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,47,.24),transparent 68%);
  animation:glow 7s ease-in-out infinite;
  pointer-events:none;
}
.hero__in{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:44px;
  align-items:center;
  padding:56px 22px 62px;
}
.hero__copy h1{
  margin:16px 0 0;
  font-size:44px;
  line-height:1.28;
  font-weight:700;
  letter-spacing:.01em;
}
.hero__lead{
  margin-top:16px;
  max-width:560px;
  color:var(--txt2);
  font-size:16px;
}
.hero__act{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero__meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  margin-top:24px;
  padding-top:20px;
  border-top:1px solid var(--line);
  color:var(--txt3);
  font-size:13.5px;
}
.hero__meta li{display:flex;align-items:center;gap:7px}
.hero__meta li::before{
  content:"";
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--main);
  box-shadow:0 0 0 3px rgba(255,122,47,.18);
  flex:0 0 auto;
}
.hero__shot{
  justify-self:center;
  width:100%;
  max-width:330px;
  margin:0 auto;
  text-align:center;
}
.hero__shot img{
  width:100%;
  height:auto;
  max-width:300px;
  margin:0 auto;
  border-radius:26px;
  box-shadow:0 0 0 1px var(--line2),0 26px 60px rgba(0,0,0,.6);
}
.hero__shot figcaption{margin-top:14px;color:var(--txt3);font-size:13px}

.facts{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.facts__in{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:26px 22px}
.facts__item{padding:0 22px;border-left:1px solid var(--line)}
.facts__item:first-child{border-left:0;padding-left:0}
.facts__item strong{display:block;font-size:24px;color:var(--main-l);letter-spacing:.02em}
.facts__item span{display:block;margin-top:5px;color:var(--txt3);font-size:13.5px}

.sec{padding:62px 0}
.sec--alt{background:var(--bg2)}
.sec h2{font-size:28px;font-weight:700;letter-spacing:.01em}
.sec .sub{margin-top:10px;color:var(--txt2);font-size:15px;max-width:720px}
.sec h2::after{
  content:"";
  display:block;
  width:52px;
  height:3px;
  margin-top:14px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--main),transparent);
}

.grid{display:grid;gap:18px;margin-top:30px}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.card{
  position:relative;
  overflow:hidden;
  padding:24px 24px 24px 28px;
  border:1px solid var(--line);
  border-radius:var(--r);
  background:linear-gradient(180deg,var(--card2),var(--card));
}
.card::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  background:linear-gradient(180deg,var(--main),var(--main-d));
}
.card::after{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:1px;
  background:linear-gradient(90deg,rgba(255,122,47,.5),transparent 60%);
}
.card h3{font-size:17.5px;font-weight:700;color:var(--txt)}
.card p{margin-top:10px;color:var(--txt2);font-size:14.5px}
.card .tagline{display:inline-block;margin-bottom:11px;color:var(--accent);font-size:12.5px;letter-spacing:.1em}

.rail{
  display:flex;
  gap:16px;
  margin-top:30px;
  padding:4px 2px 16px;
  overflow-x:auto;
  overflow-y:hidden;
  scroll-snap-type:x mandatory;
}
.rail figure{flex:0 0 auto;width:224px;margin:0;scroll-snap-align:start}
.rail img{
  width:100%;
  height:auto;
  border-radius:14px;
  box-shadow:0 0 0 1px var(--line),0 16px 34px rgba(0,0,0,.5);
}
.rail figcaption{margin-top:11px;color:var(--txt3);font-size:13px;line-height:1.6}

.deep__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:30px}
.deep__card{
  display:block;
  position:relative;
  overflow:hidden;
  padding:26px 26px 26px 30px;
  border:1px solid var(--line);
  border-radius:var(--r);
  background:linear-gradient(150deg,#1E2937,#141C26);
  transition:transform .22s ease,border-color .22s ease;
}
.deep__card:hover{transform:translateY(-4px);border-color:rgba(255,122,47,.5)}
.deep__card h3{font-size:18.5px;color:var(--txt);font-weight:700}
.deep__card p{margin-top:10px;color:var(--txt2);font-size:14.5px}
.deep__card em{
  display:block;
  margin-top:16px;
  font-style:normal;
  color:var(--main-l);
  font-size:13.5px;
  letter-spacing:.02em;
}
.deep__card em::after{content:" →"}

.steps{position:relative;margin-top:30px;padding-left:26px;border-left:1px dashed rgba(255,122,47,.42)}
.steps li{position:relative;padding:0 0 26px 20px}
.steps li:last-child{padding-bottom:0}
.steps li::before{
  content:attr(data-step);
  position:absolute;
  left:-40px;
  top:1px;
  width:26px;
  height:26px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:linear-gradient(135deg,var(--main),var(--main-d));
  color:var(--ink);
  font-size:12.5px;
  font-weight:700;
}
.steps b{display:block;font-size:16.5px;color:var(--txt)}
.steps p{margin-top:7px;color:var(--txt2);font-size:14.5px}

.voice blockquote{
  position:relative;
  overflow:hidden;
  padding:24px 24px 22px 28px;
  border:1px solid var(--line);
  border-radius:var(--r);
  background:linear-gradient(180deg,var(--card2),var(--card));
}
.voice blockquote::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  background:linear-gradient(180deg,var(--accent),var(--main));
}
.voice p{color:var(--txt2);font-size:14.5px}
.voice cite{display:block;margin-top:14px;font-style:normal;color:var(--main-l);font-size:13.5px}

.qa{margin-top:26px;display:grid;gap:12px}
.qa details{
  border:1px solid var(--line);
  border-radius:14px;
  background:rgba(22,31,42,.7);
  padding:0 20px;
}
.qa details[open]{border-color:rgba(255,122,47,.42)}
.qa summary{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:17px 0;
  font-size:15.5px;
  font-weight:600;
  color:var(--txt);
}
.qa summary::before{content:"Q";color:var(--main);font-weight:700;flex:0 0 auto}
.qa details p{padding:0 0 18px 26px;color:var(--txt2);font-size:14.5px}

.cta{
  padding:56px 0;
  background:linear-gradient(120deg,#FF7A2F,#E05A12 58%,#C94A08);
}
.cta__in{display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap}
.cta h2{font-size:27px;color:#2A1D00;font-weight:700}
.cta p{margin-top:9px;color:rgba(42,29,0,.82);font-size:15px;max-width:640px}
.cta .btn{color:#2A1D00;background:#FFF3E6;box-shadow:0 12px 28px rgba(90,40,0,.28)}
.cta .btn:hover{color:#2A1D00}
.cta .btn--ghost{color:#2A1D00;background:rgba(255,255,255,.3);border-color:rgba(42,29,0,.34)}
.cta .btn--ghost:hover{color:#2A1D00;background:rgba(255,255,255,.46)}
.cta h2::after{display:none}

.foot{background:#0A0E13;border-top:1px solid var(--line);padding:52px 0 30px}
.foot__in{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}
.foot h4{font-size:15px;color:var(--txt);margin-bottom:14px}
.foot p{color:var(--txt3);font-size:14px}
.foot .brand{margin-bottom:14px}
.foot a{display:block;padding:4px 0;color:var(--txt2);font-size:14px}
.foot a:hover{color:var(--main-l)}
.foot .btn{
  display:inline-flex;
  margin-top:16px;
  padding:11px 20px;
  background:linear-gradient(135deg,var(--main),var(--main-d));
  color:var(--ink);
  font-weight:700;
}
.foot__note{
  margin-top:34px;
  padding-top:22px;
  border-top:1px solid var(--line);
  color:var(--txt3);
  font-size:13px;
}
.foot__note p+p{margin-top:8px}
.foot__copy{margin-top:16px;color:var(--txt3);font-size:13px}

.page-hero{
  padding:52px 0 40px;
  background:
    radial-gradient(620px 320px at 8% -30%,rgba(255,122,47,.18),transparent 64%),
    linear-gradient(180deg,#0F1620,#0D1117);
  border-bottom:1px solid var(--line);
}
.page-hero h1{font-size:34px;line-height:1.34;font-weight:700;margin-top:14px}
.page-hero .lead{margin-top:14px;max-width:820px;color:var(--txt2);font-size:15.5px}
.crumb{margin-top:18px;color:var(--txt3);font-size:13px}
.crumb a{color:var(--txt2)}

.prose{margin-top:30px}
.prose h2{margin-top:44px}
.prose h2:first-child{margin-top:0}
.prose h3{margin-top:30px;font-size:18px;color:var(--txt)}
.prose p{margin-top:14px;color:var(--txt2);font-size:15.5px}
.prose ul{margin-top:14px;display:grid;gap:10px}
.prose li{position:relative;padding-left:20px;color:var(--txt2);font-size:15.5px}
.prose li::before{
  content:"";
  position:absolute;
  left:0;
  top:.68em;
  width:7px;
  height:7px;
  border-radius:2px;
  background:var(--main);
}
.prose figure{margin:30px auto 0;max-width:400px;text-align:center}
.prose figure img{width:100%;height:auto;border-radius:16px;box-shadow:0 0 0 1px var(--line),0 18px 40px rgba(0,0,0,.5)}
.prose figure figcaption{margin-top:12px;color:var(--txt3);font-size:13px}
.prose table{width:100%;border-collapse:collapse;margin-top:20px;font-size:14.5px}
.prose th,.prose td{padding:11px 14px;border:1px solid var(--line);text-align:left;color:var(--txt2)}
.prose th{background:rgba(255,122,47,.1);color:var(--txt);font-weight:600}
.prose dl{margin-top:18px;display:grid;gap:14px}
.prose dt{font-weight:700;color:var(--txt)}
.prose dd{margin-top:5px;color:var(--txt2);font-size:14.5px}

.related{margin-top:46px;padding:26px;border:1px solid var(--line);border-radius:var(--r);background:rgba(22,31,42,.6)}
.related h2{margin-top:0;font-size:20px}
.related ul{margin-top:16px;display:grid;gap:10px}
.related li{position:relative;padding-left:20px;color:var(--txt2);font-size:15px}
.related li::before{content:"›";position:absolute;left:2px;top:-1px;color:var(--main);font-size:17px}
.related a{color:var(--main-l)}

.rise{animation:swipe .6s cubic-bezier(.22,.7,.3,1) both}
.rise.d1{animation-delay:.06s}
.rise.d2{animation-delay:.12s}
.rise.d3{animation-delay:.18s}
.rise.d4{animation-delay:.24s}
@keyframes swipe{from{opacity:0;transform:translateX(-16px)}to{opacity:1;transform:none}}
@keyframes glow{0%,100%{opacity:.55;transform:scale(1)}50%{opacity:.95;transform:scale(1.08)}}
@media (prefers-reduced-motion:reduce){
  .rise{animation:none;opacity:1;transform:none}
  .hero::after{animation:none}
}

@media (max-width:980px){
  .hero__in{grid-template-columns:1fr;gap:34px;padding:44px 22px 50px}
  .hero__copy h1{font-size:36px}
  .hero__shot{max-width:330px}
  .grid--2,.grid--3,.grid--4{grid-template-columns:repeat(2,1fr)}
  .deep__grid{grid-template-columns:1fr}
  .facts__in{grid-template-columns:repeat(2,1fr);gap:24px 0}
  .facts__item:nth-child(3){border-left:0;padding-left:0}
  .foot__in{grid-template-columns:1fr 1fr}
  .page-hero h1{font-size:29px}
  .cta__in{flex-direction:column;align-items:flex-start}
}
@media (max-width:620px){
  .top__in{flex-wrap:wrap;gap:10px 12px}
  .brand{order:1}
  .top__in>.btn{order:2;margin-left:auto}
  .nav{
    order:3;
    flex:1 0 100%;
    justify-content:flex-start;
    gap:4px;
    padding-bottom:2px;
  }
  .nav a{font-size:12.5px;padding:6px 8px}
  .hero__copy h1{font-size:29px}
  .hero__lead{font-size:15px}
  .hero__act .btn{width:100%}
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .facts__in{grid-template-columns:1fr;gap:20px 0;padding:22px}
  .facts__item{padding-left:0;border-left:0;border-top:1px solid var(--line);padding-top:18px}
  .facts__item:first-child{border-top:0;padding-top:0}
  .sec{padding:46px 0}
  .sec h2{font-size:23px}
  .rail figure{width:186px}
  .page-hero h1{font-size:25px}
  .foot__in{grid-template-columns:1fr;gap:24px}
  .cta h2{font-size:22px}
  .steps{padding-left:22px}
  .steps li::before{left:-35px;width:24px;height:24px;font-size:12px}
}