:root{
  --bg0:#101009;
  --bg1:#1a1d0f;
  --card:rgba(255,255,255,.06);
  --card2:rgba(255,255,255,.085);
  --text:#e9e9f4;
  --muted:rgba(233,233,244,.72);
  --muted2:rgba(233,233,244,.56);
  --line:rgba(255,255,255,.12);
  --shadow:0 18px 60px rgba(0,0,0,.55);
  --red:#f7ef3b;
  --red2:#c3f631;
  --amber:#49f73b;
  --glow:rgba(247,239,59,0.55);
  --glow2:rgba(73,247,59,0.35);
  --radius:18px;
  --radius-sm:12px;
  --container:1120px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  background: radial-gradient(1200px 600px at 50% -10%, rgba(255,46,67,.20), transparent 55%),
              radial-gradient(900px 500px at 20% 10%, rgba(255,176,46,.12), transparent 60%),
              linear-gradient(180deg, var(--bg0), var(--bg1));
  color:var(--text);
  overflow-x:hidden;
}

.skip-link{
  position:absolute;
  top:10px; left:10px;
  padding:10px 12px;
  border-radius:10px;
  background:rgba(0,0,0,.65);
  color:var(--text);
  border:1px solid var(--line);
  transform:translateY(-140%);
  transition:transform .18s ease;
  z-index:1000;
  text-decoration:none;
}
.skip-link:focus{transform:translateY(0)}

.bg{
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
}
#bgCanvas{width:100%; height:100%}
.bg-overlay{
  position:absolute; inset:0;
  background:
    radial-gradient(1000px 700px at 60% 30%, rgba(255,46,67,.12), transparent 60%),
    radial-gradient(700px 500px at 20% 60%, rgba(255,176,46,.08), transparent 55%),
    linear-gradient(180deg, rgba(255,255,255,.03), transparent 35%);
  mix-blend-mode:screen;
}
.bg-grid{
  position:absolute; inset:0;
  opacity:.12;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.12) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.12) 1px, transparent 1px);
  background-size:80px 80px;
  transform:perspective(600px) rotateX(62deg) translateY(-240px);
  transform-origin:center top;
  filter:blur(.2px);
}

.container{
  width:min(var(--container), calc(100% - 32px));
  margin:0 auto;
}

.site-header{
  position:sticky;
  top:0;
  z-index:40;
  backdrop-filter: blur(10px);
  background: linear-gradient(180deg, rgba(5,5,10,.65), rgba(5,5,10,.30));
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 0;
  gap:18px;
}
.brand{display:flex; align-items:center; gap:12px}
.brand-mark{
  width:42px; height:42px;
  display:grid; place-items:center;
  border-radius:14px;
  background: radial-gradient(circle at 30% 25%, rgba(255,255,255,.18), rgba(255,255,255,.04) 55%),
              linear-gradient(135deg, rgba(255,46,67,.65), rgba(255,176,46,.35));
  border:1px solid rgba(255,255,255,.18);
  box-shadow: 0 0 0 1px rgba(0,0,0,.2), 0 18px 40px rgba(255,46,67,.18);
  font-weight:900;
  letter-spacing:.08em;
}
.brand-text{line-height:1.1}
.brand-title{font-weight:900; font-size:15px; letter-spacing:.02em}
.brand-sub{font-size:12px; color:var(--muted2); margin-top:3px}

.nav-links{
  display:flex;
  align-items:center;
  gap:18px;
}
.nav-links a{
  color:var(--muted);
  text-decoration:none;
  font-size:14px;
  padding:8px 10px;
  border-radius:12px;
  border:1px solid transparent;
  transition:all .18s ease;
}
.nav-links a:hover{
  color:var(--text);
  border-color:rgba(255,255,255,.12);
  background:rgba(255,255,255,.05);
}
.nav-links a.active{
  color:var(--text);
  border-color:rgba(255,46,67,.35);
  background:linear-gradient(180deg, rgba(255,46,67,.16), rgba(255,46,67,.06));
  box-shadow:0 0 0 1px rgba(0,0,0,.2) inset;
}

.nav-actions{display:flex; align-items:center; gap:10px}
.nav-cta{
  border-radius:12px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.05);
  color:var(--text);
  padding:9px 12px;
  cursor:pointer;
  transition:transform .12s ease, border-color .18s ease, background .18s ease;
}
.nav-cta:hover{transform:translateY(-1px); border-color:rgba(255,46,67,.35); background:rgba(255,46,67,.10)}
.nav-cta:active{transform:translateY(0)}

.hero{padding:54px 0 24px}

.skip-safe{
  scroll-margin-top:90px;
}

.hero-inner{
  display:grid;
  grid-template-columns: 1.05fr .95fr;
  gap:28px;
  align-items:start;
}

.pill{
  display:inline-flex;
  gap:10px;
  align-items:center;
  padding:7px 12px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.05);
  color:var(--muted);
  font-size:13px;
}
.dot{
  width:10px; height:10px;
  border-radius:999px;
  background:radial-gradient(circle at 30% 30%, rgba(255,255,255,.85), rgba(255,255,255,.0) 40%),
             radial-gradient(circle at 50% 50%, rgba(255,46,67,1), rgba(255,46,67,.0) 60%),
             rgba(255,46,67,.8);
  box-shadow:0 0 0 6px rgba(255,46,67,.10), 0 0 25px rgba(255,46,67,.55);
}

.hero-title{
  margin:16px 0 10px;
  font-size:44px;
  line-height:1.06;
  letter-spacing:-.02em;
}
.glow-text{
  background:linear-gradient(90deg, #fff, rgba(255,46,67,.92), rgba(255,176,46,.92));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  text-shadow:0 0 26px rgba(255,46,67,.25);
}
.hero-desc{
  margin:0;
  color:var(--muted);
  line-height:1.7;
  font-size:15px;
  max-width:56ch;
}
.hero-cta{
  margin-top:22px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 16px;
  border-radius:14px;
  text-decoration:none;
  border:1px solid rgba(255,255,255,.14);
  color:var(--text);
  cursor:pointer;
  transition:transform .14s ease, background .18s ease, border-color .18s ease, box-shadow .18s ease;
  user-select:none;
  font-weight:700;
  letter-spacing:.01em;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(-1px)}
.btn-wide{min-width:220px}
.btn-arrow{opacity:.85}
.btn-primary{
  border-color:rgba(255,46,67,.55);
  background:linear-gradient(180deg, rgba(255,46,67,.32), rgba(255,46,67,.12));
  box-shadow:0 18px 55px rgba(255,46,67,.18);
}
.btn-primary:hover{
  border-color:rgba(255,46,67,.85);
  box-shadow:0 20px 70px rgba(255,46,67,.25);
}
.btn-ghost{
  background:rgba(255,255,255,.05);
}
.btn-ghost:hover{
  border-color:rgba(255,255,255,.22);
  background:rgba(255,255,255,.07);
}

.hero-meta{
  margin-top:22px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.meta-item{
  flex:1 1 160px;
  min-width:160px;
  border-radius:16px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);
  padding:12px 12px;
}
.meta-k{color:var(--muted2); font-size:13px}
.meta-v{margin-top:6px; font-weight:800}

.hero-right{display:flex; flex-direction:column; gap:16px; align-items:flex-end}

.panel{
  width:100%;
  border-radius:22px;
  border:1px solid rgba(255,255,255,.14);
  background:linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.035));
  box-shadow:var(--shadow);
  overflow:hidden;
}
.panel-hero{position:relative}
.panel-hero::before{
  content:"";
  position:absolute; inset:-60px -80px auto auto;
  width:240px; height:240px;
  background:radial-gradient(circle at 30% 30%, rgba(255,46,67,.35), transparent 60%);
  filter:blur(2px);
}
.panel-title{
  padding:16px 16px 0;
  font-weight:900;
  letter-spacing:.02em;
}
.panel-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:12px;
  padding:16px;
}
.stat{
  border-radius:16px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(0,0,0,.16);
  padding:12px;
}
.stat-num{
  font-size:22px;
  font-weight:950;
  letter-spacing:.01em;
}
.stat-label{color:var(--muted2); font-size:12px; margin-top:6px}
.panel-foot{
  padding:0 16px 16px;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.chip{
  padding:8px 10px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);
  color:var(--muted2);
  font-size:12px;
}

.card-stack{
  position:relative;
  width:min(360px, 100%);
  height:160px;
}
.card-card{
  position:absolute;
  inset:auto 0 0 0;
  margin:auto;
  width:100%;
  height:160px;
  border-radius:20px;
  border:1px solid rgba(255,255,255,.12);
  background:
    linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03)),
    radial-gradient(300px 120px at 40% 0%, rgba(255,46,67,.25), transparent 55%);
  box-shadow: 0 22px 75px rgba(0,0,0,.55);
  transform-origin:bottom center;
}
.c1{transform:translateY(26px) rotate(-4deg) scale(.98); opacity:.8}
.c2{transform:translateY(10px) rotate(3deg) scale(.99); opacity:.92}
.c3{transform:translateY(0px) rotate(-2deg) scale(1); opacity:1}
.c4{transform:translateY(2px) rotate(4deg) scale(.98); opacity:.75}

/* subtle hover polish */
.card-stack:hover .c3{
  transform:translateY(-2px) rotate(-1deg) scale(1.01);
  transition:transform .25s ease;
}

.section{padding:66px 0}
.section-head{
  margin-bottom:26px;
}
.section-head-left{max-width:600px}
.section-head h2{
  margin:0;
  font-size:28px;
  letter-spacing:-.02em;
}
.section-head p{
  margin:10px 0 0;
  color:var(--muted);
  line-height:1.7;
}

.grid-3{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
}
.feature{
  border-radius:var(--radius);
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);
  padding:18px;
  box-shadow:0 16px 50px rgba(0,0,0,.30);
}
.feature-icon{
  width:44px; height:44px;
  display:grid; place-items:center;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.12);
  background:linear-gradient(180deg, rgba(255,46,67,.18), rgba(255,255,255,.03));
  color:rgba(255,255,255,.92);
  font-size:18px;
}
.feature h3{margin:14px 0 8px; font-size:16px}
.feature p{margin:0; color:var(--muted); line-height:1.7; font-size:14px}

.section-rail{
  padding-top:42px;
  background: linear-gradient(180deg, rgba(255,255,255,.03), transparent 60%);
  border-top:1px solid rgba(255,255,255,.06);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
}
.step{
  border-radius:var(--radius);
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);
  padding:18px;
}
.step-num{
  font-weight:950;
  color:rgba(255,255,255,.80);
  letter-spacing:.06em;
  opacity:.95;
}
.step h3{margin:10px 0 8px; font-size:16px}
.step p{margin:0; color:var(--muted); line-height:1.7; font-size:14px}

.download-wrap{
  display:grid;
  grid-template-columns: 1fr;
  gap:18px;
}
.download-actions{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
}
.download-card{
  border-radius:var(--radius);
  border:1px solid rgba(255,255,255,.12);
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  padding:18px;
  box-shadow:0 20px 70px rgba(0,0,0,.40);
  overflow:hidden;
  position:relative;
}
.download-card::before{
  content:"";
  position:absolute;
  inset:-120px -120px auto auto;
  width:260px; height:260px;
  background:radial-gradient(circle at 30% 30%, rgba(255,46,67,.22), transparent 60%);
  filter:blur(2px);
  pointer-events:none;
}
.download-top{position:relative}
.download-badge{
  display:inline-flex;
  align-items:center;
  padding:7px 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:900;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(0,0,0,.18);
}
.download-title{margin-top:12px; font-size:16px; font-weight:950}
.download-desc{margin-top:10px; color:var(--muted); line-height:1.7; font-size:14px}
.download-hint{
  margin-top:12px;
  color:var(--muted2);
  font-size:12px;
  line-height:1.6;
}
.download-note{
  margin-top:4px;
  display:flex;
  gap:14px;
  align-items:flex-start;
  border-radius:var(--radius);
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.03);
  padding:16px 16px;
}
.note-mark{
  width:32px; height:32px;
  display:grid; place-items:center;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.14);
  background:linear-gradient(180deg, rgba(255,176,46,.20), rgba(255,255,255,.03));
  color:rgba(255,255,255,.92);
  font-weight:950;
}
.note-title{font-weight:950}
.note-text{margin-top:6px; color:var(--muted); line-height:1.7; font-size:14px}
.divider{
  height:1px;
  background:rgba(255,255,255,.08);
  margin:8px 0;
}

.faq-snippet{
  display:grid;
  grid-template-columns: 1fr;
  gap:12px;
  border-radius:var(--radius);
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.03);
  padding:16px;
}
.faq-snippet-row{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:12px;
}
.faq-mini{
  border-radius:16px;
  border:1px solid rgba(255,255,255,.10);
  background:rgba(0,0,0,.14);
  padding:12px;
}
.faq-mini-title{font-weight:950}
.faq-mini-text{margin-top:6px; color:var(--muted); line-height:1.6; font-size:13px}
.faq-link{
  color:rgba(255,255,255,.9);
  text-decoration:none;
  font-weight:800;
}
.faq-link:hover{color:#fff; text-decoration:underline}

.accordion{
  display:grid;
  grid-template-columns:1fr;
  gap:10px;
}
.acc-item{
  border-radius:var(--radius);
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);
  padding:10px 14px;
}
.acc-item summary{
  cursor:pointer;
  font-weight:900;
  list-style:none;
}
.acc-item summary::-webkit-details-marker{display:none}
.acc-body{
  color:var(--muted);
  padding:10px 0 4px;
  line-height:1.7;
  font-size:14px;
}
.acc-item[open]{
  border-color:rgba(255,46,67,.35);
  background:linear-gradient(180deg, rgba(255,46,67,.12), rgba(255,255,255,.03));
}

.about-plain{
  max-width:760px;
  color:var(--muted);
  line-height:1.9;
  font-size:14px;
  border-radius:var(--radius);
  border:1px solid rgba(255,255,255,.10);
  background:rgba(255,255,255,.02);
  padding:16px 16px;
}
.about-plain p{
  margin:10px 0;
}

/* App展示板块（横向6图） */
.app-showcase{
  display:flex;
  gap:14px;
  overflow-x:auto;
  padding:4px 2px 12px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.app-showcase::-webkit-scrollbar{height:10px}
.app-showcase::-webkit-scrollbar-thumb{
  background:rgba(255,255,255,.12);
  border-radius:999px;
}
.app-shot{
  flex:0 0 auto;
  width:clamp(210px, 62vw, 260px);
  aspect-ratio: 9 / 16;
  scroll-snap-align:start;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.03);
  box-shadow:0 18px 55px rgba(0,0,0,.35);
  overflow:hidden;
  position:relative;
  transition:transform .18s ease, border-color .18s ease;
}
.app-shot img{
  width:100%;
  height:100%;
  display:block;
  object-fit:cover;
  filter:saturate(1.05) contrast(1.02);
}
.app-shot::after{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(0,0,0,0), rgba(0,0,0,.35));
  pointer-events:none;
}
.app-shot:hover{
  transform:translateY(-3px);
  border-color:rgba(255,46,67,.35);
}

/* 精彩活动（图片展示） */
.events-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
}
.event-card{
  margin:0;
  border-radius:var(--radius);
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.03);
  overflow:hidden;
  box-shadow:0 18px 60px rgba(0,0,0,.28);
  transition:transform .18s ease, border-color .18s ease;
}
.event-card:hover{
  transform:translateY(-3px);
  border-color:rgba(255,46,67,.35);
}
.event-card img{
  width:100%;
  height:210px;
  display:block;
  object-fit:cover;
  filter:saturate(1.03) contrast(1.02);
}
.event-card figcaption{
  padding:14px 16px 16px;
  background:linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.00));
}
.event-title{
  font-weight:950;
  letter-spacing:.01em;
}
.event-desc{
  margin-top:8px;
  color:var(--muted);
  line-height:1.7;
  font-size:14px;
}

.site-footer{
  padding:28px 0 40px;
  border-top:1px solid rgba(255,255,255,.08);
  background:rgba(0,0,0,.12);
}
.footer-inner{display:flex; align-items:center; justify-content:space-between; gap:18px}
.footer-brand{display:flex; align-items:center; gap:12px; font-weight:950}
.footer-desc{margin-top:6px; color:var(--muted2); font-size:13px}
.footer-left{display:flex; flex-direction:column}
.footer-link{
  color:var(--muted);
  text-decoration:none;
  padding:8px 10px;
  border-radius:12px;
  border:1px solid transparent;
  transition:all .18s ease;
  display:inline-block;
}
.footer-link:hover{
  color:var(--text);
  border-color:rgba(255,255,255,.12);
  background:rgba(255,255,255,.05);
}
.footer-right{display:flex; gap:6px; flex-wrap:wrap; justify-content:flex-end}

/* Responsive */
@media (max-width: 980px){
  .hero-inner{grid-template-columns:1fr; gap:18px}
  .hero-right{align-items:stretch}
  .hero-title{font-size:38px}
  .grid-3{grid-template-columns:1fr; }
  .steps{grid-template-columns:1fr}
  .download-actions{grid-template-columns:1fr}
  .panel-grid{grid-template-columns:repeat(2,1fr)}
  .faq-snippet-row{grid-template-columns:1fr}
  .btn-wide{min-width:unset; width:100%}
  .nav-links{gap:10px}
  .app-shot{width:clamp(190px, 70vw, 240px)}
  .events-grid{grid-template-columns:1fr}
  .event-card img{height:200px}
}

@media (prefers-reduced-motion: reduce){
  *{scroll-behavior:auto !important}
}