:root{
  --bg:#0B0B0E;
  --bg2:#15151A;
  --text:#F8F6F0;
  --muted:#A9A7A1;
  --accent:#C8B88A;
  --accent2:#E4D6AC;
  --accent-soft:rgba(200,184,138,0.14);
  --border:#2C2C31;
  --panel:rgba(21,21,26,0.62);
  --radius:16px;
  --maxw:1120px;
  --font:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}

/* 背景网格纹理 */
.bg{position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(circle at 18% 8%, rgba(200,184,138,.07) 0%, transparent 46%),
    radial-gradient(circle at 82% 88%, rgba(200,184,138,.05) 0%, transparent 46%),
    linear-gradient(0deg,transparent 23px, rgba(200,184,138,.035) 24px, transparent 25px),
    linear-gradient(90deg,transparent 23px, rgba(200,184,138,.035) 24px, transparent 25px),
    var(--bg);
  background-size:auto,auto,48px 48px,48px 48px,auto;
}
.vignette{position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(circle at 50% 30%, transparent 40%, rgba(0,0,0,.55) 100%)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(18px,4vw,40px)}

/* ---------- 导航 ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;
  padding:16px clamp(18px,4vw,40px);
  background:transparent;border-bottom:1px solid transparent;
  transition:background .35s ease,border-color .35s ease,backdrop-filter .35s ease,padding .35s ease;}
.nav.scrolled{background:var(--panel);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);padding-top:12px;padding-bottom:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:.5px}
.brand-mark{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;overflow:hidden;
  background:var(--accent-soft);border:1px solid var(--border)}
.brand-mark img{width:24px;height:24px;object-fit:contain}
.nav-links{display:flex;gap:30px;font-size:14px;color:var(--muted)}
.nav-links a{position:relative;transition:color .2s;padding:4px 0}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.nav-links a:hover{color:var(--accent)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--accent)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{padding:9px 22px;border-radius:22px;font-weight:600;font-size:13px;
  border:1px solid var(--accent);color:var(--accent);transition:background .2s,transform .2s}
.nav-cta:hover{background:var(--accent-soft);transform:translateY(-1px)}

/* ---------- 子页面容器（一屏一个主题） ---------- */
.page{display:flex;flex-direction:column;justify-content:center;
  min-height:calc(100vh - 149px);padding:104px 0 56px}

/* ---------- Hero 左右分栏（首页一屏） ---------- */
.hero{display:flex;align-items:center;min-height:calc(100vh - 56px);padding:130px 0 60px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:20px;
  font-size:12px;color:var(--muted);border:1px solid var(--border);margin-bottom:22px;
  background:var(--panel);backdrop-filter:blur(10px)}
.pill .dot{width:7px;height:7px;border-radius:50%;background:#5BD38A;box-shadow:0 0 8px #5BD38A}
.hero h1{font-size:clamp(36px,6vw,62px);line-height:1.08;font-weight:800;letter-spacing:-.5px;margin-bottom:18px}
.hero h1 .accent{color:var(--accent);background:linear-gradient(90deg,var(--accent),var(--accent2));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero .sub{font-size:clamp(15px,2vw,18px);color:var(--muted);max-width:520px;margin-bottom:32px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.btn-primary{display:inline-flex;align-items:center;gap:10px;padding:15px 32px;border-radius:12px;
  font-size:16px;font-weight:700;color:#1A1A1A;cursor:pointer;border:none;
  background:var(--accent);transition:background .18s,transform .18s,box-shadow .18s;
  box-shadow:0 10px 30px rgba(200,184,138,.22)}
.btn-primary:hover{background:var(--accent2);transform:translateY(-2px);box-shadow:0 16px 40px rgba(200,184,138,.32)}
.btn-ghost{padding:14px 26px;border-radius:10px;font-size:14px;font-weight:600;color:var(--text);
  border:1px solid var(--border);cursor:pointer;background:transparent;transition:border-color .18s,color .18s}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.meta-row{margin-top:26px;display:flex;gap:14px 18px;flex-wrap:wrap;color:var(--muted);font-size:12px}
.meta-row span{display:inline-flex;align-items:center;gap:6px}
.meta-row span::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--accent);opacity:.7}
.hero-visual{position:relative;display:grid;place-items:center}
.hero-visual .ring{position:absolute;width:340px;height:340px;border-radius:50%;
  border:1px solid rgba(200,184,138,.25);box-shadow:0 0 60px rgba(200,184,138,.12) inset}
.hero-visual .ring::before{content:"";position:absolute;inset:-26px;border-radius:50%;
  border:1px dashed rgba(200,184,138,.18)}
.hero-visual img{width:min(320px,80%);height:auto;position:relative;z-index:1;
  filter:drop-shadow(0 18px 40px rgba(200,184,138,.28))}

/* ---------- 区块标题 ---------- */
.sec-head{text-align:center;margin-bottom:34px}
.sec-head .kicker{font-size:11px;letter-spacing:4px;text-transform:uppercase;color:var(--accent);font-weight:600}
.sec-head h2{font-size:clamp(26px,4vw,40px);font-weight:800;margin-top:10px}
.sec-head p{color:var(--muted);margin-top:10px;font-size:14px}

/* ---------- 核心功能 2x2 ---------- */
.features{padding:0}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{padding:40px 36px;border-radius:var(--radius);border:1px solid var(--border);
  background:var(--panel);backdrop-filter:blur(12px);transition:border-color .25s,transform .25s,box-shadow .25s}
.card:hover{border-color:var(--accent);transform:translateY(-4px);
  box-shadow:0 18px 46px rgba(0,0,0,.5),0 0 0 1px rgba(200,184,138,.18)}
.card .ico{width:76px;height:76px;border-radius:16px;overflow:hidden;
  background:var(--accent-soft);border:1px solid var(--border);margin-bottom:20px;
  transition:transform .25s}
.card:hover .ico{transform:scale(1.06)}
.card .ico img{width:100%;height:100%;object-fit:cover;display:block}
.card h3{font-size:20px;font-weight:700;margin-bottom:10px}
.card p{color:var(--muted);font-size:14.5px;line-height:1.75}

/* ---------- 使用场景 3 卡 ---------- */
.scenes{padding:0}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene{border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);
  background:var(--panel);backdrop-filter:blur(12px);transition:border-color .25s,transform .25s,box-shadow .25s}
.scene:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:0 18px 46px rgba(0,0,0,.5)}
.scene .ph{position:relative;aspect-ratio:16/10;overflow:hidden}
.scene .ph img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .4s ease}
.scene:hover .ph img{transform:scale(1.05)}
.scene .ph .no{position:absolute;top:12px;left:12px;font-size:32px;font-weight:800;
  color:var(--accent);text-shadow:0 2px 10px rgba(0,0,0,.6);opacity:.92}
.scene .body{padding:26px 26px 28px}
.scene .body h3{font-size:19px;font-weight:700;margin-bottom:8px}
.scene .body p{color:var(--muted);font-size:14px;line-height:1.75}

/* ---------- 下载三端 ---------- */
.download{padding:0}
.dl-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.dl-c{position:relative;padding:38px 30px 32px;text-align:center;border-radius:var(--radius);
  border:1px solid var(--border);background:var(--panel);backdrop-filter:blur(12px);
  transition:border-color .25s,transform .25s,box-shadow .25s}
.dl-c.hl{border-color:var(--accent)}
.dl-c.hl::before{content:"";position:absolute;inset:0;pointer-events:none;border-radius:var(--radius);
  background:radial-gradient(120% 80% at 50% 0%, rgba(200,184,138,.16) 0%, transparent 62%)}
.dl-c:hover{transform:translateY(-4px);box-shadow:0 18px 46px rgba(0,0,0,.5)}
.dl-c.hl:hover{box-shadow:0 18px 52px rgba(0,0,0,.55),0 0 0 1px rgba(200,184,138,.25)}
/* 平台 logo 圆 */
.dl-logo{position:relative;width:66px;height:66px;border-radius:18px;margin:0 auto 16px;display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.12);box-shadow:0 8px 22px rgba(0,0,0,.35)}
.dl-logo svg{width:36px;height:36px;display:block}
.dl-c.win .dl-logo{background:linear-gradient(145deg,#3b82f6,#1d4ed8)}
.dl-c.and .dl-logo{background:linear-gradient(145deg,#4ade80,#16a34a)}
.dl-c.lin .dl-logo{background:linear-gradient(145deg,#fbbf24,#d97706)}
/* 徽标 */
.dl-c-badge{position:absolute;top:-1px;right:16px;transform:translateY(-50%);padding:4px 13px;border-radius:11px;
  font-size:11px;font-weight:700;letter-spacing:.5px;z-index:2}
.dl-c-badge.avail{background:var(--accent);color:#1A1A1A}
.dl-c-badge.beta{background:var(--accent-soft);color:var(--accent);animation:pulse 2s ease-in-out infinite}
.dl-c-badge.soon{background:#2a2a2a;color:var(--muted)}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(200,184,138,.45)}50%{box-shadow:0 0 0 7px rgba(200,184,138,0)}}
.dl-title{position:relative;font-size:20px;font-weight:700;margin-bottom:8px}
.dl-desc{position:relative;color:var(--muted);font-size:14px;margin-bottom:22px;line-height:1.6}
.dl-btn{position:relative;display:block;text-align:center;width:100%;padding:15px;border-radius:10px;font-size:15px;font-weight:700;
  color:#1A1A1A;background:var(--accent);border:none;cursor:pointer;transition:background .18s,transform .18s}
.dl-btn:hover{background:var(--accent2);transform:translateY(-1px)}
.dl-c.and .dl-btn{background:#A89870;color:#15130d}
.dl-c.and .dl-btn:hover{background:#bda87e}
.dl-c.soon .dl-btn{background:rgba(200,184,138,.08);color:var(--accent);border:1px dashed var(--accent);
  cursor:default;pointer-events:none}
.dl-c-info{position:relative;margin-top:18px;font-size:12px;color:var(--muted);display:flex;flex-wrap:wrap;justify-content:center;gap:6px}
.dl-c-info span:not(:last-child)::after{content:"·";margin-left:6px;opacity:.45}
.dl-c-tip{position:relative;max-height:0;opacity:0;overflow:hidden;margin-top:0;padding:0 12px;
  border-radius:8px;font-size:11.5px;line-height:1.6;color:var(--muted);text-align:left;
  border:1px solid transparent;background:transparent;
  transition:max-height .3s ease,opacity .3s ease,margin .3s ease,padding .3s ease}
.dl-c:hover .dl-c-tip{max-height:90px;opacity:1;margin-top:16px;padding:11px 12px;
  border-color:rgba(200,184,138,.2);background:var(--accent-soft)}

/* ---------- FAQ 手风琴 ---------- */
.faq{padding:80px 0}
.faq-list{max-width:780px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--border);border-radius:12px;background:var(--panel);backdrop-filter:blur(12px);overflow:hidden;
  transition:border-color .25s}
.faq-item.open{border-color:var(--accent)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer;
  padding:18px 22px;font-size:15px;font-weight:600;user-select:none}
.faq-q .plus{width:22px;height:22px;flex:0 0 22px;position:relative;transition:transform .3s ease}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--accent);border-radius:2px}
.faq-q .plus::before{left:50%;top:3px;width:2px;height:16px;transform:translateX(-50%)}
.faq-q .plus::after{top:50%;left:3px;height:2px;width:16px;transform:translateY(-50%)}
.faq-item.open .plus{transform:rotate(135deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a .inner{padding:0 22px 20px;color:var(--muted);font-size:13px;line-height:1.8}

/* ---------- 页脚 ---------- */
footer{border-top:1px solid var(--border);padding:36px 0;color:var(--muted);font-size:13px;margin-top:40px}
.foot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px}
.foot-links{display:flex;gap:18px;flex-wrap:wrap}
.foot-links a:hover{color:var(--text)}

/* ---------- 回到顶部 ---------- */
.toTop{position:fixed;right:24px;bottom:24px;z-index:70;width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;cursor:pointer;border:1px solid var(--accent);
  background:var(--panel);backdrop-filter:blur(10px);color:var(--accent);
  opacity:0;transform:translateY(16px) scale(.9);pointer-events:none;
  transition:opacity .3s ease,transform .3s ease,background .2s}
.toTop.show{opacity:1;transform:none;pointer-events:auto}
.toTop:hover{background:var(--accent-soft)}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(200,184,138,.32);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:rgba(200,184,138,.55)}

@media (max-width:820px){
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .hero-visual{order:-1}
  .hero-visual .ring{width:240px;height:240px}
  .grid2{grid-template-columns:1fr}
  .grid3{grid-template-columns:1fr}
  .nav-links{display:none}
}