:root{
  --brand:#e63946;
  --brand-2:#f4a261;
  --brand-3:#ff6b8a;
  --grad:linear-gradient(135deg,#e63946 0%,#ff6b8a 45%,#f4a261 100%);
  --grad-soft:linear-gradient(160deg,rgba(230,57,70,.10),rgba(244,162,97,.06));
  --ink:#1d1d1f;
  --ink-2:#4a4a52;
  --ink-3:#7a7a85;
  --bg:#ffffff;
  --bg-2:#f7f6f4;
  --bg-3:#efece8;
  --line:#e8e6e1;
  --glass:rgba(255,255,255,.62);
  --glass-line:rgba(255,255,255,.55);
  --shadow-sm:0 2px 10px rgba(29,29,31,.05);
  --shadow-md:0 10px 30px rgba(29,29,31,.08);
  --shadow-lg:0 20px 50px rgba(230,57,70,.16);
  --radius:16px;
  --radius-sm:12px;
  --radius-lg:24px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
body.dark{
  --ink:#f2f2f2;
  --ink-2:#c8c8cc;
  --ink-3:#8f8f99;
  --bg:#121214;
  --bg-2:#1a1a1e;
  --bg-3:#222228;
  --line:#2c2c33;
  --glass:rgba(26,26,30,.62);
  --glass-line:rgba(255,255,255,.08);
  --shadow-sm:0 2px 10px rgba(0,0,0,.4);
  --shadow-md:0 10px 30px rgba(0,0,0,.45);
  --shadow-lg:0 20px 50px rgba(230,57,70,.28);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
  transition:background .35s var(--ease),color .35s var(--ease);
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background:
    radial-gradient(60vw 60vw at 90% -10%,rgba(244,162,97,.10),transparent 60%),
    radial-gradient(50vw 50vw at -10% 20%,rgba(230,57,70,.08),transparent 60%);
  pointer-events:none;
}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease)}
img,svg{max-width:100%;display:block}
::selection{background:var(--brand);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
header.site{
  position:sticky;top:0;z-index:50;
  background:var(--glass);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  transition:background .35s var(--ease),border-color .35s var(--ease);
}
.nav{display:flex;align-items:center;gap:18px;height:66px}
.logo{
  display:flex;align-items:center;gap:10px;
  font-weight:800;font-size:19px;letter-spacing:.5px;
  transition:transform .25s var(--ease);
}
.logo:hover{transform:translateY(-1px)}
.logo .dot{
  width:14px;height:14px;border-radius:50%;
  background:var(--grad);
  box-shadow:0 0 0 4px rgba(230,57,70,.12);
  animation:pulse 2.6s var(--ease) infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 4px rgba(230,57,70,.12)}
  50%{box-shadow:0 0 0 8px rgba(230,57,70,.05)}
}
.nav ul{display:flex;gap:18px;list-style:none;font-size:15px;color:var(--ink-2);margin-left:8px}
.nav ul a{position:relative;padding:4px 0}
.nav ul a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--grad);border-radius:2px;
  transition:width .3s var(--ease);
}
.nav ul a:hover{color:var(--brand)}
.nav ul a:hover::after{width:100%}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.search{
  display:flex;align-items:center;
  border:1px solid var(--line);
  border-radius:999px;
  padding:4px 6px 4px 14px;
  background:var(--bg-2);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.search:focus-within{
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(230,57,70,.10);
}
.search input{
  border:none;background:transparent;outline:none;
  width:150px;font-size:14px;color:var(--ink);
  font-family:inherit;
}
.search input::placeholder{color:var(--ink-3)}
.search button{
  border:none;background:var(--grad);color:#fff;
  border-radius:999px;padding:6px 16px;cursor:pointer;
  font-size:13px;font-family:inherit;font-weight:600;
  transition:filter .25s var(--ease),transform .25s var(--ease);
}
.search button:hover{filter:brightness(1.08);transform:translateY(-1px)}
.icon-btn{
  border:1px solid var(--line);
  background:var(--bg-2);
  border-radius:999px;
  width:38px;height:38px;
  cursor:pointer;font-size:16px;
  display:grid;place-items:center;
  color:var(--ink);
  transition:transform .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease);
}
.icon-btn:hover{transform:translateY(-2px) rotate(-8deg);border-color:var(--brand);color:var(--brand)}
.menu-btn{display:none}
.hero{
  position:relative;
  background:var(--grad-soft);
  padding:64px 0 52px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;
  width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(230,57,70,.16),transparent 70%);
  top:-220px;right:-120px;
  filter:blur(10px);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;
  width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(244,162,97,.16),transparent 70%);
  bottom:-200px;left:-140px;
  filter:blur(10px);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;
}
.hero h1{
  font-size:40px;line-height:1.26;letter-spacing:-.6px;
  margin-bottom:18px;
  animation:rise .7s var(--ease) both;
}
.hero h1 em{
  font-style:normal;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.hero p.lead{
  font-size:16.5px;color:var(--ink-2);margin-bottom:22px;
  animation:rise .7s var(--ease) both;
}
.hero p.lead:nth-of-type(2){animation-delay:.08s}
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;animation:rise .7s .16s var(--ease) both}
.btn{
  display:inline-block;padding:13px 26px;border-radius:999px;
  font-weight:600;font-size:15px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),filter .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(230,57,70,.28)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(230,57,70,.36);filter:brightness(1.05)}
.btn-ghost{
  border:1px solid var(--line);color:var(--ink);background:var(--bg);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.slider{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--glass-line);
  background:var(--glass);
  backdrop-filter:saturate(180%) blur(18px);
  -webkit-backdrop-filter:saturate(180%) blur(18px);
  box-shadow:var(--shadow-lg);
  min-height:300px;
  animation:rise .8s .12s var(--ease) both;
}
.slide{display:none;padding:30px 28px 54px}
.slide.active{display:block;animation:fade .55s var(--ease)}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.slide h3{font-size:20px;margin-bottom:10px;letter-spacing:-.2px}
.slide p{color:var(--ink-2);font-size:14.5px}
.slide .tag{
  display:inline-block;font-size:12px;font-weight:600;
  background:var(--grad);color:#fff;
  padding:3px 12px;border-radius:999px;margin-bottom:12px;
  letter-spacing:.3px;
}
.slider-dots{position:absolute;bottom:16px;left:28px;display:flex;gap:8px}
.slider-dots span{
  width:9px;height:9px;border-radius:50%;
  background:var(--line);cursor:pointer;
  transition:background .25s var(--ease),width .25s var(--ease);
}
.slider-dots span.on{background:var(--grad);width:24px;border-radius:999px}
section{
  padding:64px 0;
  border-bottom:1px solid var(--line);
  position:relative;
}
section:last-of-type{border-bottom:none}
.sec-head{max-width:780px;margin-bottom:34px}
.sec-head h2{
  font-size:28px;letter-spacing:-.4px;margin-bottom:12px;
  position:relative;padding-left:18px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:5px;
  border-radius:999px;background:var(--grad);
}
.sec-head p{color:var(--ink-2);font-size:15.5px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  background:var(--bg);
  box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease),background .35s var(--ease);
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;inset:0;
  background:var(--grad-soft);
  opacity:0;transition:opacity .3s var(--ease);
  pointer-events:none;
}
.card:hover{
  transform:translateY(-5px);
  border-color:rgba(230,57,70,.45);
  box-shadow:var(--shadow-md);
}
.card:hover::before{opacity:1}
.card h3{font-size:17px;margin-bottom:8px;position:relative}
.card h4{font-size:15px;margin:14px 0 6px;color:var(--brand);position:relative}
.card p{font-size:14.5px;color:var(--ink-2);position:relative}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:30px}
.stat{
  text-align:center;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px 12px;
  background:var(--glass);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.stat:hover{transform:translateY(-4px);border-color:rgba(230,57,70,.4);box-shadow:var(--shadow-md)}
.stat .num{
  font-size:32px;font-weight:800;letter-spacing:-1px;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.stat .lbl{font-size:13.5px;color:var(--ink-2);margin-top:4px}
.article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.article{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
  background:var(--bg);
  box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.article:hover{transform:translateY(-4px);border-color:rgba(230,57,70,.4);box-shadow:var(--shadow-md)}
.article time{
  font-size:12.5px;color:var(--brand);font-weight:600;
  letter-spacing:.3px;
  display:inline-block;
  background:rgba(230,57,70,.08);
  padding:2px 10px;border-radius:999px;
}
.article h3{font-size:16.5px;margin:10px 0 8px;line-height:1.5}
.article p{font-size:14px;color:var(--ink-2)}
.article a.more{
  display:inline-block;margin-top:12px;font-size:13.5px;
  color:var(--brand);font-weight:600;
  transition:transform .25s var(--ease),letter-spacing .25s var(--ease);
}
.article a.more:hover{transform:translateX(4px);letter-spacing:.4px}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  margin-bottom:12px;
  overflow:hidden;
  background:var(--bg);
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.faq-item:hover{border-color:rgba(230,57,70,.35)}
.faq-item.open{border-color:rgba(230,57,70,.5);box-shadow:var(--shadow-sm)}
.faq-q{
  width:100%;text-align:left;background:none;border:none;
  padding:17px 20px;font-size:15.5px;font-weight:600;
  cursor:pointer;display:flex;justify-content:space-between;gap:12px;
  color:var(--ink);font-family:inherit;
  transition:color .25s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-q .ar{color:var(--brand);transition:transform .3s var(--ease);font-weight:400}
.faq-item.open .ar{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .35s var(--ease),padding .35s var(--ease);
  padding:0 20px;
}
.faq-item.open .faq-a{max-height:640px;padding-bottom:18px}
.faq-a p{font-size:14.5px;color:var(--ink-2)}
.steps{display:grid;gap:14px;counter-reset:step}
.step{
  display:grid;grid-template-columns:48px 1fr;gap:18px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  padding:20px;
  background:var(--bg);
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.step:hover{transform:translateX(4px);border-color:rgba(230,57,70,.4);box-shadow:var(--shadow-sm)}
.step::before{
  counter-increment:step;content:counter(step);
  width:48px;height:48px;border-radius:50%;
  background:var(--grad);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:18px;
  box-shadow:0 6px 16px rgba(230,57,70,.28);
}
.step h4{font-size:15.5px;margin-bottom:4px}
.step p{font-size:14px;color:var(--ink-2)}
.case{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  background:var(--glass);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.case:hover{transform:translateY(-5px);border-color:rgba(230,57,70,.4);box-shadow:var(--shadow-md)}
.case h3{font-size:16.5px;margin-bottom:8px}
.case p{font-size:14.5px;color:var(--ink-2)}
.case blockquote{
  font-size:14.5px;color:var(--ink-2);
  border-left:3px solid var(--brand);
  padding-left:14px;margin-top:14px;
  font-style:italic;
}
footer.site{
  background:var(--bg-2);
  padding:56px 0 26px;
  border-top:1px solid var(--line);
  transition:background .35s var(--ease);
}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:36px}
footer h4{
  font-size:15px;margin-bottom:14px;
  position:relative;padding-left:12px;
}
footer h4::before{
  content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:3px;
  border-radius:999px;background:var(--grad);
}
footer ul{list-style:none;font-size:14px;color:var(--ink-2);display:grid;gap:9px}
footer ul a{transition:color .25s var(--ease),padding-left .25s var(--ease)}
footer ul a:hover{color:var(--brand);padding-left:4px}
.foot-bottom{
  border-top:1px solid var(--line);
  padding-top:22px;font-size:13px;color:var(--ink-3);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
}
.breadcrumb{font-size:13.5px;color:var(--ink-2);padding:16px 0}
.breadcrumb a{color:var(--brand)}
.breadcrumb a:hover{text-decoration:underline}
.to-top{
  position:fixed;right:22px;bottom:22px;
  width:48px;height:48px;border-radius:50%;
  background:var(--grad);color:#fff;border:none;cursor:pointer;
  font-size:18px;display:none;place-items:center;z-index:60;
  box-shadow:0 10px 28px rgba(230,57,70,.38);
  transition:transform .25s var(--ease),filter .25s var(--ease);
}
.to-top.show{display:grid;animation:rise .4s var(--ease)}
.to-top:hover{transform:translateY(-4px) scale(1.05);filter:brightness(1.08)}
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero h1{font-size:32px}
  .grid-3{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:1fr 1fr}
  .article-list{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav ul{display:none}
  .menu-btn{display:grid}
  .nav ul.open{
    display:flex;position:absolute;top:66px;left:0;right:0;
    flex-direction:column;background:var(--glass);
    backdrop-filter:saturate(180%) blur(16px);
    -webkit-backdrop-filter:saturate(180%) blur(16px);
    padding:18px 22px;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-md);
    animation:rise .3s var(--ease);
  }
  .nav ul.open a{padding:8px 0;font-size:15px}
  .search input{width:110px}
  section{padding:52px 0}
  .sec-head h2{font-size:24px}
}
@media(max-width:560px){
  .grid-3,.grid-2{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .hero{padding:44px 0 36px}
  .hero h1{font-size:28px}
  .hero p.lead{font-size:15.5px}
  .btn{padding:12px 22px;font-size:14.5px}
  .slide{padding:24px 22px 50px}
  .slider-dots{left:22px}
  .stat .num{font-size:26px}
  .to-top{right:16px;bottom:16px;width:44px;height:44px}
  .search{display:none}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}