:root{
  --bg:#0A0A0A;
  --panel:#1A1A1A;
  --text:#F5F5F7;
  --muted:rgba(245,245,247,.72);
  --hair:rgba(245,245,247,.12);
  --red:#FF2D55;
  --blue:#00F2FF;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --radius:16px;
  --container: min(1440px, calc(100% - 32px));
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height:1.5;
}
a{color:inherit}
img{max-width:100%; display:block}
button,input,textarea{font:inherit; color:inherit}
input,textarea{
  background:transparent;
  border:1px solid var(--hair);
  border-radius:12px;
  padding:12px 14px;
  outline:none;
}
input:focus,textarea:focus{border-color:rgba(0,242,255,.9); box-shadow:0 0 0 4px rgba(0,242,255,.08)}

.sr-only{
  position:absolute;
  width:1px; height:1px;
  padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0);
  white-space:nowrap; border:0;
}

.skip-link{
  position:absolute;
  left:12px; top:12px;
  padding:10px 12px;
  border-radius:12px;
  background:rgba(0,242,255,.12);
  border:1px solid rgba(0,242,255,.28);
  text-decoration:none;
  transform:translateY(-140%);
  transition:transform .2s ease;
  z-index:9999;
}
.skip-link:focus{transform:translateY(0)}

.container{width:var(--container); margin-inline:auto}
.mono{font-family:"JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace}

.grain{
  pointer-events:none;
  position:fixed;
  inset:0;
  opacity:.02;
  mix-blend-mode:overlay;
  background-image:url("./noise.svg");
  background-size:240px 240px;
  animation:grain 3.2s steps(2) infinite;
  z-index:1;
}
@keyframes grain{
  0%{transform:translate3d(0,0,0)}
  25%{transform:translate3d(-2%,1%,0)}
  50%{transform:translate3d(1%,-2%,0)}
  75%{transform:translate3d(2%,2%,0)}
  100%{transform:translate3d(0,0,0)}
}

.site-header{
  position:sticky;
  top:0;
  z-index:50;
  backdrop-filter:saturate(1.3) blur(10px);
  background:rgba(10,10,10,.55);
  border-bottom:1px solid rgba(245,245,247,.06);
}
.site-header.is-elevated{border-bottom-color:rgba(245,245,247,.12); box-shadow:0 10px 30px rgba(0,0,0,.25)}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:14px 0;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  min-width:0;
}
.brand-dot{
  width:10px; height:10px;
  border-radius:999px;
  background:var(--red);
  box-shadow:0 0 0 4px rgba(255,45,85,.14);
}
.brand-text{
  font-weight:600;
  letter-spacing:.2px;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.nav{
  display:flex;
  gap:14px;
  align-items:center;
}
.nav-link{
  text-decoration:none;
  color:rgba(245,245,247,.86);
  padding:10px 10px;
  border-radius:12px;
  border:1px solid transparent;
  transition:transform .2s ease, border-color .2s ease, background-color .2s ease, color .2s ease;
}
.nav-link:hover{transform:translateY(-1px); border-color:rgba(0,242,255,.18); background:rgba(0,242,255,.06); color:var(--text)}
.nav-link-cta{
  border-color:rgba(255,45,85,.28);
  background:rgba(255,45,85,.08);
}
.nav-link-cta:hover{border-color:rgba(255,45,85,.5); background:rgba(255,45,85,.12)}

.nav-toggle{
  display:none;
  width:44px; height:44px;
  border-radius:12px;
  border:1px solid rgba(245,245,247,.12);
  background:rgba(245,245,247,.04);
}
.nav-toggle:hover{border-color:rgba(0,242,255,.25)}
.nav-toggle-bars{
  display:block;
  width:18px; height:12px;
  margin-inline:auto;
  position:relative;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after,
.nav-toggle-bars{
  background:rgba(245,245,247,.88);
  border-radius:999px;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  width:18px; height:2px;
}
.nav-toggle-bars{height:2px}
.nav-toggle-bars::before{top:-5px}
.nav-toggle-bars::after{top:5px}

.hero{
  position:relative;
  min-height:calc(100svh - 72px);
  display:flex;
  align-items:flex-end;
  overflow:hidden;
}
.hero-video{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  filter:contrast(1.05) saturate(1.05);
}
.hero-overlay{
  position:absolute;
  inset:0;
  background:
    radial-gradient(1000px 700px at 30% 20%, rgba(0,242,255,.14), transparent 55%),
    radial-gradient(900px 700px at 70% 40%, rgba(255,45,85,.14), transparent 60%),
    linear-gradient(to bottom, rgba(10,10,10,.25), rgba(10,10,10,.84));
}
.hero-content{
  position:relative;
  z-index:2;
  padding:96px 0 46px;
}
.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid rgba(245,245,247,.12);
  background:rgba(10,10,10,.35);
  color:rgba(245,245,247,.82);
  margin:0 0 16px;
}
.live-dot{
  width:8px; height:8px;
  border-radius:999px;
  background:var(--red);
  box-shadow:0 0 0 6px rgba(255,45,85,.12);
}
.hero-title{
  font-family:"Playfair Display", "Songti SC", STSong, serif;
  font-weight:900;
  letter-spacing:.2px;
  line-height:1.06;
  margin:0 0 14px;
  font-size:clamp(34px, 4.6vw, 64px);
  text-shadow:0 14px 50px rgba(0,0,0,.55);
}
.hero-subtitle{
  max-width:70ch;
  color:rgba(245,245,247,.82);
  margin:0 0 26px;
  font-size:clamp(15px, 1.4vw, 18px);
}
.hero-actions{display:flex; gap:12px; flex-wrap:wrap; margin-bottom:28px}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  text-decoration:none;
  border-radius:14px;
  border:1px solid transparent;
  padding:12px 16px;
  min-height:44px;
  cursor:pointer;
  transition:transform .2s ease, box-shadow .2s ease, background-color .2s ease, border-color .2s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{
  background:rgba(255,45,85,.92);
  border-color:rgba(255,45,85,.35);
  box-shadow:0 18px 50px rgba(255,45,85,.16);
}
.btn-primary:hover{background:rgba(255,45,85,1); border-color:rgba(255,45,85,.55)}
.btn-ghost{
  background:rgba(245,245,247,.06);
  border-color:rgba(245,245,247,.14);
}
.btn-ghost:hover{border-color:rgba(0,242,255,.22); background:rgba(0,242,255,.06)}

.hero-metrics{
  display:grid;
  grid-template-columns:repeat(3, minmax(0, 1fr));
  gap:12px;
  margin:0;
}
.metric{
  border:1px solid rgba(245,245,247,.10);
  background:rgba(10,10,10,.38);
  border-radius:var(--radius);
  padding:14px 14px;
}
.metric dt{font-size:12px; color:rgba(245,245,247,.72); margin:0 0 6px}
.metric dd{margin:0; font-weight:800; font-size:22px; letter-spacing:.2px}

.section{position:relative; z-index:2; padding:72px 0}
.section-muted{background:rgba(26,26,26,.55); border-top:1px solid rgba(245,245,247,.06); border-bottom:1px solid rgba(245,245,247,.06)}
.section-head{margin-bottom:18px}
.section-title{
  margin:0 0 8px;
  font-size:clamp(22px, 2.2vw, 34px);
  font-weight:800;
  letter-spacing:.2px;
}
.section-desc{margin:0; color:var(--muted); max-width:78ch}

.grid{display:grid; gap:18px}
.grid-2{grid-template-columns:repeat(2, minmax(0, 1fr))}
.grid-3{grid-template-columns:repeat(3, minmax(0, 1fr))}

.card{
  position:relative;
  background:rgba(26,26,26,.68);
  border:1px solid rgba(245,245,247,.10);
  border-radius:var(--radius);
  padding:18px 18px;
  box-shadow:0 1px 0 rgba(255,255,255,.02);
  transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(0,242,255,.16);
  box-shadow:0 16px 48px rgba(0,0,0,.35);
}
.card-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:10px;
}
.card-title{margin:0; font-size:16px; font-weight:800}
.card-subtitle{margin:0; font-size:12px; color:rgba(245,245,247,.64)}
.card-label{margin:0; font-size:12px; color:rgba(245,245,247,.72)}
.card-note{margin:12px 0 0; font-size:13px; color:rgba(245,245,247,.66)}

.card-tag{
  font-size:12px;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid rgba(245,245,247,.14);
  background:rgba(245,245,247,.04);
  white-space:nowrap;
}
.tag-blue{border-color:rgba(0,242,255,.25); background:rgba(0,242,255,.08)}
.tag-muted{opacity:.85}

.card-value{
  font-family:"JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-weight:600;
  font-size:32px;
  margin:10px 0 0;
  letter-spacing:.2px;
}
.unit{font-size:14px; opacity:.85; margin-left:6px}

.chart-wrap{position:relative; height:220px}

.cases-toolbar{
  display:flex;
  gap:12px;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  margin:18px 0 18px;
}
.segmented{
  display:flex;
  gap:8px;
  padding:6px;
  border-radius:999px;
  border:1px solid rgba(245,245,247,.12);
  background:rgba(10,10,10,.25);
}
.seg-btn{
  border:1px solid transparent;
  background:transparent;
  color:rgba(245,245,247,.78);
  padding:10px 12px;
  min-height:44px;
  border-radius:999px;
  cursor:pointer;
  transition:background-color .2s ease, border-color .2s ease, color .2s ease;
}
.seg-btn:hover{background:rgba(0,242,255,.06); border-color:rgba(0,242,255,.14); color:var(--text)}
.seg-btn.is-active{
  background:rgba(255,45,85,.10);
  border-color:rgba(255,45,85,.26);
  color:var(--text);
}
.search input{min-width:min(360px, 70vw)}

.case-grid .card{cursor:pointer}
.case-cover{
  height:170px;
  border-radius:14px;
  border:1px solid rgba(245,245,247,.10);
  background:
    radial-gradient(800px 250px at 30% 20%, rgba(0,242,255,.14), transparent 55%),
    radial-gradient(700px 250px at 70% 40%, rgba(255,45,85,.14), transparent 60%),
    linear-gradient(135deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  box-shadow:0 0 0 1px rgba(0,242,255,.06), 0 0 40px rgba(0,242,255,.06);
  animation:neon 3s ease-in-out infinite;
}
@keyframes neon{
  0%,100%{box-shadow:0 0 0 1px rgba(0,242,255,.06), 0 0 26px rgba(0,242,255,.06)}
  50%{box-shadow:0 0 0 1px rgba(0,242,255,.12), 0 0 44px rgba(0,242,255,.10)}
}
.case-meta{display:flex; gap:10px; align-items:center; justify-content:space-between; margin-top:12px}
.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  border-radius:999px;
  padding:6px 10px;
  border:1px solid rgba(245,245,247,.12);
  background:rgba(245,245,247,.04);
  font-size:12px;
  color:rgba(245,245,247,.82);
}
.pill.blue{border-color:rgba(0,242,255,.22); background:rgba(0,242,255,.06)}
.pill.red{border-color:rgba(255,45,85,.22); background:rgba(255,45,85,.06)}

.list{margin:12px 0 0; padding-left:18px; color:rgba(245,245,247,.78)}
.list li{margin:8px 0}

.form{display:flex; flex-direction:column; gap:14px; margin-top:10px}
.field{display:flex; flex-direction:column; gap:8px}
.field-label{font-size:12px; color:rgba(245,245,247,.72)}
.field-hint{font-size:12px; color:rgba(245,245,247,.56)}
.field-error{font-size:12px; color:rgba(255,45,85,.92); min-height:16px}
.form-note{min-height:18px; margin:0; color:rgba(245,245,247,.66); font-size:12px}
.form-row{gap:12px}

.contact-quick{
  display:flex;
  gap:16px;
  align-items:flex-start;
}
.qr{
  width:156px;
  border-radius:16px;
  border:1px solid rgba(245,245,247,.12);
  background:rgba(10,10,10,.25);
  padding:10px;
}

.site-footer{
  padding:22px 0 30px;
  border-top:1px solid rgba(245,245,247,.06);
  background:rgba(10,10,10,.55);
}
.footer-inner{
  display:flex;
  gap:14px;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
}
.footer-links{display:flex; gap:14px}
.footer-links a{color:rgba(245,245,247,.78); text-decoration:none}
.footer-links a:hover{color:var(--text); text-decoration:underline}

.wechat-float{
  position:fixed;
  right:16px;
  bottom:16px;
  z-index:60;
}
.wechat-float-btn{
  min-width:64px;
  min-height:44px;
  border-radius:999px;
  border:1px solid rgba(0,242,255,.25);
  background:rgba(0,242,255,.10);
  cursor:pointer;
}
.wechat-float-btn:hover{background:rgba(0,242,255,.14)}
.wechat-panel{
  margin-top:10px;
  width:180px;
  border-radius:16px;
  border:1px solid rgba(245,245,247,.12);
  background:rgba(10,10,10,.80);
  padding:12px;
  box-shadow:var(--shadow);
}
.wechat-panel p{margin:10px 0 0; color:rgba(245,245,247,.76); font-size:12px}

.dialog{
  width:min(860px, calc(100% - 24px));
  border:1px solid rgba(245,245,247,.12);
  border-radius:18px;
  background:rgba(10,10,10,.92);
  color:var(--text);
  box-shadow:var(--shadow);
}
.dialog::backdrop{background:rgba(0,0,0,.65)}
.dialog-inner{margin:0; padding:16px}
.dialog-close{
  position:absolute;
  top:10px; right:10px;
  width:44px; height:44px;
  border-radius:14px;
  border:1px solid rgba(245,245,247,.12);
  background:rgba(245,245,247,.04);
  cursor:pointer;
}
.dialog-close:hover{border-color:rgba(255,45,85,.25); background:rgba(255,45,85,.10)}
.dialog h3{margin:6px 0 8px}
.dialog p{margin:10px 0; color:rgba(245,245,247,.82)}
.dialog .kv{display:grid; grid-template-columns:140px 1fr; gap:10px; margin-top:12px}
.dialog .kv div{padding:10px 12px; border-radius:14px; border:1px solid rgba(245,245,247,.10); background:rgba(26,26,26,.65)}
.dialog .kv .k{color:rgba(245,245,247,.68); font-size:12px}
.dialog .kv .v{font-family:"JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace}

@media (max-width: 960px){
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .hero-metrics{grid-template-columns:1fr; max-width:520px}
  .search input{min-width:min(520px, 92vw)}
  .contact-quick{flex-direction:column}
}

@media (max-width: 840px){
  .nav-toggle{display:inline-flex; align-items:center; justify-content:center}
  .nav{
    position:absolute;
    left:0; right:0;
    top:100%;
    padding:10px;
    margin:0;
    border-bottom:1px solid rgba(245,245,247,.10);
    background:rgba(10,10,10,.92);
    display:none;
    flex-direction:column;
    align-items:stretch;
  }
  .nav.is-open{display:flex}
  .nav-link{padding:12px 12px}
}