*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#f0f2f8;
  --glass:rgba(255,255,255,.72);
  --glass-border:rgba(255,255,255,.8);
  --text:#1a1d26;
  --muted:#6b7280;
  --grad:linear-gradient(135deg,#667eea 0%,#764ba2 100%);
  --grad-soft:linear-gradient(135deg,rgba(102,126,234,.12),rgba(118,75,162,.08));
  --shadow:0 8px 32px rgba(102,126,234,.12);
  --shadow-lg:0 20px 60px rgba(102,126,234,.18);
  --radius:20px;
  --nav-h:72px
}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC","PingFang SC",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.65;min-height:100vh;overflow-x:hidden
}

/* 背景光斑 */
.bg-orbs{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none}
.bg-orbs .o{position:absolute;border-radius:50%;filter:blur(80px);opacity:.55}
.bg-orbs .o1{width:520px;height:520px;background:#a5b4fc;top:-180px;right:-120px}
.bg-orbs .o2{width:400px;height:400px;background:#c4b5fd;bottom:-100px;left:-80px}
.bg-orbs .o3{width:280px;height:280px;background:#fda4af;top:40%;left:55%;opacity:.25}

.page{position:relative;z-index:1;min-height:100vh;display:flex;flex-direction:column}

/* 顶栏 */
header{
  height:var(--nav-h);display:flex;align-items:center;justify-content:center;
  padding:0 24px;position:sticky;top:0;z-index:100
}
.header-inner{
  width:100%;max-width:1080px;display:flex;align-items:center;justify-content:space-between;
  background:var(--glass);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border:1px solid var(--glass-border);border-radius:999px;padding:10px 10px 10px 20px;
  box-shadow:var(--shadow)
}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-weight:700;font-size:17px;letter-spacing:-.3px}
.logo:hover{text-decoration:none;color:var(--text)}
.logo img{width:32px;height:32px;border-radius:8px}
nav{display:flex;align-items:center;gap:4px}
nav a{
  padding:10px 18px;font-size:14px;font-weight:500;color:var(--muted);text-decoration:none;
  border-radius:999px;transition:.2s
}
nav a:hover{color:var(--text);background:rgba(255,255,255,.6);text-decoration:none}
nav a.active{color:#fff;background:var(--grad);box-shadow:0 4px 14px rgba(102,126,234,.35)}
nav a.cta-nav{margin-left:4px}

main{flex:1;width:100%;max-width:1080px;margin:0 auto;padding:32px 24px 64px}

/* Hero */
.hero{text-align:center;padding:48px 0 56px}
.hero-tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;
  background:var(--glass);border:1px solid var(--glass-border);font-size:12px;font-weight:600;
  color:#667eea;margin-bottom:24px;backdrop-filter:blur(12px)
}
.hero-tag span{width:6px;height:6px;border-radius:50%;background:#22c55e}
.hero h1{
  font-size:clamp(2rem,5vw,3rem);font-weight:800;letter-spacing:-1.5px;line-height:1.15;
  margin-bottom:16px;background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text
}
.hero-desc{font-size:16px;color:var(--muted);max-width:520px;margin:0 auto 32px;line-height:1.7}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;font-size:15px;font-weight:600;border-radius:14px;
  text-decoration:none!important;border:none;cursor:pointer;transition:.25s
}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(102,126,234,.35)}
.btn-grad:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);color:#fff}
.btn-glass{background:var(--glass);color:var(--text);border:1px solid var(--glass-border);backdrop-filter:blur(12px)}
.btn-glass:hover{background:#fff;transform:translateY(-1px)}

/* 玻璃卡片网格 */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:40px 0}
.glass-card{
  background:var(--glass);backdrop-filter:blur(16px);border:1px solid var(--glass-border);
  border-radius:var(--radius);padding:28px 24px;transition:.3s;box-shadow:var(--shadow)
}
.glass-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);background:rgba(255,255,255,.85)}
.glass-card .ico{
  width:44px;height:44px;border-radius:12px;background:var(--grad-soft);
  display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px
}
.glass-card h3{font-size:16px;font-weight:700;margin-bottom:8px;letter-spacing:-.2px}
.glass-card p{font-size:13px;color:var(--muted);line-height:1.65;margin:0}

.section-head{text-align:center;margin:48px 0 28px}
.section-head h2{font-size:22px;font-weight:700;letter-spacing:-.5px;margin-bottom:8px}
.section-head p{font-size:14px;color:var(--muted)}

.tags{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:8px}
.tag{
  font-size:12px;padding:6px 14px;border-radius:999px;background:var(--glass);
  border:1px solid var(--glass-border);color:var(--muted);backdrop-filter:blur(8px)
}

/* 下载页 */
.dl-hero{
  background:var(--glass);backdrop-filter:blur(20px);border:1px solid var(--glass-border);
  border-radius:28px;padding:48px 40px;text-align:center;box-shadow:var(--shadow-lg);
  margin:24px 0 32px;position:relative;overflow:hidden
}
.dl-hero::before{
  content:'';position:absolute;top:-50%;left:-20%;width:60%;height:200%;
  background:var(--grad);opacity:.06;border-radius:50%;transform:rotate(-15deg)
}
.dl-hero .ver{
  display:inline-block;padding:8px 18px;border-radius:999px;background:var(--grad);
  color:#fff;font-size:13px;font-weight:700;margin-bottom:20px;position:relative
}
.dl-hero h1{font-size:28px;font-weight:800;letter-spacing:-.8px;margin-bottom:12px;position:relative}
.dl-hero p{font-size:15px;color:var(--muted);max-width:440px;margin:0 auto 28px;position:relative}
.dl-hero .btn-grad{padding:16px 40px;font-size:16px;position:relative}
.dl-hero-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;position:relative}
.dl-hero-btns .btn-glass{padding:16px 28px;font-size:15px}
.dl-hero .sub{font-size:13px;color:var(--muted);margin-top:16px;position:relative}
.dl-hero .sub a{color:#667eea;font-weight:500}

.version-card{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  background:var(--glass);backdrop-filter:blur(20px);border:1px solid var(--glass-border);
  border-radius:var(--radius);padding:28px 32px;margin-bottom:28px;box-shadow:var(--shadow)
}
.version-card .ver-label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.version-card .ver-num{display:block;font-size:36px;font-weight:800;letter-spacing:-1px;
  background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1.1}
.version-card .ver-meta{display:block;font-size:13px;color:var(--muted);margin-top:8px}
.version-btns{display:flex;gap:10px;flex-wrap:wrap}
.version-btns .btn{padding:14px 28px;font-size:15px}

.plat-icons{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:32px 0}
.plat-box{
  text-align:center;padding:28px 20px 24px;background:var(--glass);border:1px solid var(--glass-border);
  border-radius:var(--radius);backdrop-filter:blur(12px);transition:.2s;
  display:flex;flex-direction:column;align-items:center
}
.plat-box:hover{background:rgba(255,255,255,.9);transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.plat-box .icon{font-size:32px;margin-bottom:10px}
.plat-box b{display:block;font-size:15px;margin-bottom:6px}
.plat-box span{font-size:12px;color:var(--muted);margin-bottom:18px;line-height:1.5;flex:1}
.plat-box .btn-plat{width:100%;padding:14px 20px;font-size:14px;margin-top:auto}

.tip-box{
  background:var(--grad-soft);border:1px solid rgba(102,126,234,.15);border-radius:16px;
  padding:18px 22px;font-size:13px;color:var(--muted);line-height:1.7;margin-top:24px
}
.tip-box a{color:#667eea;font-weight:500}

/* 帮助页 */
.steps{display:flex;flex-direction:column;gap:16px;margin:28px 0}
.step-card{
  display:flex;gap:20px;background:var(--glass);border:1px solid var(--glass-border);
  border-radius:var(--radius);padding:24px 28px;backdrop-filter:blur(12px);
  box-shadow:var(--shadow);transition:.2s
}
.step-card:hover{box-shadow:var(--shadow-lg)}
.step-num{
  flex-shrink:0;width:48px;height:48px;border-radius:14px;background:var(--grad);
  color:#fff;font-size:18px;font-weight:800;display:flex;align-items:center;justify-content:center
}
.step-body h3{font-size:16px;font-weight:700;margin-bottom:6px}
.step-body p,.step-body ul{font-size:13px;color:var(--muted);margin:0}
.step-body ul{margin:8px 0 0 18px}
.step-body li{margin-bottom:4px}
.step-body code{font-family:Consolas,monospace;font-size:12px;background:rgba(102,126,234,.1);padding:2px 6px;border-radius:4px;color:#667eea}

.table-wrap{overflow:hidden;border-radius:var(--radius);border:1px solid var(--glass-border);margin:24px 0;box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;font-size:13px;background:var(--glass);backdrop-filter:blur(12px)}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid rgba(0,0,0,.04)}
th{background:rgba(102,126,234,.08);font-weight:600;color:#667eea;font-size:12px;text-transform:uppercase;letter-spacing:.5px}
td{color:var(--muted)}
tr:last-child td{border-bottom:none}

.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:24px}
.faq-item{
  background:var(--glass);border:1px solid var(--glass-border);border-radius:16px;
  padding:20px 22px;backdrop-filter:blur(12px)
}
.faq-item h4{font-size:14px;font-weight:700;margin-bottom:8px;color:var(--text)}
.faq-item p{font-size:13px;color:var(--muted);margin:0;line-height:1.6}

.page-title{margin-bottom:8px}
.page-title h1{font-size:26px;font-weight:800;letter-spacing:-.6px}
.page-title p{font-size:14px;color:var(--muted);margin-top:6px}

footer{
  text-align:center;padding:28px 24px;font-size:12px;color:var(--muted);
  border-top:1px solid rgba(0,0,0,.05);margin-top:auto
}
footer a{color:#667eea;text-decoration:none;font-weight:500}
footer a:hover{text-decoration:underline}

.hero-wrap{display:grid;grid-template-columns:1fr 1.1fr;gap:32px;align-items:center;text-align:left;padding:32px 0 48px}
.hero-wrap .hero-desc{margin:0 0 28px;text-align:left;max-width:none}
.hero-wrap .hero-actions{justify-content:flex-start}
.hero-wrap .hero-visual img{width:100%;height:auto;border-radius:var(--radius);box-shadow:var(--shadow-lg);border:1px solid var(--glass-border)}

.content-panel{
  background:var(--glass);backdrop-filter:blur(16px);border:1px solid var(--glass-border);
  border-radius:var(--radius);padding:32px 28px;margin:32px 0;box-shadow:var(--shadow)
}
.content-panel h2{font-size:20px;font-weight:700;margin-bottom:10px;letter-spacing:-.3px}
.content-panel .sub{font-size:14px;color:var(--muted);margin-bottom:20px}
.content-panel p{font-size:14px;color:var(--muted);line-height:1.75;margin-bottom:12px}
.content-panel img{width:100%;height:auto;border-radius:14px;margin:16px 0;border:1px solid var(--glass-border)}
.content-panel ul{margin:8px 0 0 20px;font-size:14px;color:var(--muted)}
.content-panel li{margin-bottom:6px}

.split-2{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px}
.mini-card{background:rgba(255,255,255,.5);border:1px solid var(--glass-border);border-radius:14px;padding:18px}
.mini-card h4{font-size:14px;font-weight:700;margin-bottom:6px}
.mini-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.6}

.page-img{display:block;width:100%;max-width:960px;height:auto;margin:0 auto 28px;border-radius:var(--radius);border:1px solid var(--glass-border);box-shadow:var(--shadow-lg)}
.hero-wrap .hero-visual img{box-shadow:0 24px 64px rgba(102,126,234,.28)}
.content-panel img{box-shadow:0 12px 36px rgba(102,126,234,.15)}

@media(max-width:768px){
  .card-grid,.plat-icons,.faq-grid,.split-2{grid-template-columns:1fr}
  .version-card{flex-direction:column;align-items:flex-start}
  .version-btns{width:100%}
  .version-btns .btn{flex:1;text-align:center;justify-content:center}
  .hero{padding:32px 0 40px}
  .hero-wrap{grid-template-columns:1fr;text-align:center}
  .hero-wrap .hero-desc{text-align:center;margin-left:auto;margin-right:auto}
  .hero-wrap .hero-actions{justify-content:center}
  nav a{padding:8px 12px;font-size:13px}
  .header-inner{padding:8px 8px 8px 16px}
  .dl-hero{padding:36px 24px}
  .step-card{flex-direction:column;gap:12px}
}