:root{--a1:#F472B6;--a2:#8B5CF6;--fg:#1A1A2E;--fg2:#7A7A9A;}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;line-height:1.6;overflow-x:hidden;}
a{text-decoration:none;color:inherit;}
img{max-width:100%;height:auto;display:block;}
.container{max-width:1200px;margin:0 auto;padding:0 clamp(16px,3vw,24px);}
body{background:#FFF5F8;color:#1A1A2E;}
.nav{position:sticky;top:0;z-index:50;background:#FFF5F8;border-bottom:1px solid #F0D8E4;}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;}
.logo{font-weight:700;font-size:16px;color:#1A1A2E;text-decoration:none;display:flex;align-items:center;gap:10px;}
.logo img{height:28px;}.nav-links{display:flex;gap:24px;}.nav-links a{color:#7A7A9A;text-decoration:none;font-size:14px;transition:color .2s;}.nav-links a:hover{color:#F472B6;}.nav-cta{padding:8px 20px;background:linear-gradient(135deg,#F472B6,#8B5CF6);border-radius:6px;color:#fff;font-weight:600;font-size:14px;text-decoration:none;}
.hero{padding:clamp(40px,6vw,80px) 0 clamp(30px,4vw,50px);}
.hero-inner{max-width:720px;}
.hero h1{font-size:clamp(24px,3.5vw,40px);font-weight:800;line-height:1.15;margin-bottom:14px;}
.hero p{font-size:clamp(14px,1.5vw,15px);color:#7A7A9A;margin-bottom:20px;}
.hero .kpi-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px;}
.hero .kpi{padding:8px 12px;background:#FFE8EF;border:1px solid #F0D8E4;border-radius:6px;}
.hero .kpi .num{font-size:15px;font-weight:700;color:#F472B6;}
.hero .kpi .lbl{font-size:10px;color:#7A7A9A;}
@media(max-width:768px){}
.strip{background:#FFE8EF;padding:10px 0;border-top:1px solid #F0D8E4;border-bottom:1px solid #F0D8E4;}
.strip-grid{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:0;}
.strip-item{padding:10px 18px;border-right:1px solid #F0D8E4;display:flex;align-items:center;gap:10px;}
.strip-item:last-child{border-right:none;}
.s-name{font-size:12px;color:#7A7A9A;}
.s-price{font-family:"SF Mono",Consolas,monospace;font-size:14px;font-weight:700;}
.s-chg{font-size:11px;color:#8B5CF6;}
.features{padding:clamp(60px,7vw,100px) 0;}
.features h2{font-size:clamp(22px,3vw,34px);font-weight:700;margin-bottom:40px;}
.nl-item{display:grid;grid-template-columns:60px 1fr;gap:20px;padding:20px 0;border-bottom:1px solid #F0D8E4;}
.nl-num{font-size:40px;font-weight:800;color:#F0D8E4;font-family:"SF Mono",Consolas,monospace;line-height:1;letter-spacing:-2px;}
.nl-content h3{font-size:16px;font-weight:600;margin-bottom:4px;color:#1A1A2E;}
.nl-content p{font-size:13px;color:#7A7A9A;line-height:1.7;}
.download{padding:clamp(60px,8vw,100px) 0;}
.download h2{font-size:clamp(22px,3vw,34px);font-weight:700;text-align:center;margin-bottom:8px;}
.download .sub{text-align:center;color:#7A7A9A;margin-bottom:40px;font-size:14px;}
.dl-grid{display:grid;grid-template-columns:1fr 1fr auto;gap:16px;align-items:stretch;max-width:800px;margin:0 auto;}
.dl-card{padding:24px;background:#FFE8EF;border:1px solid #F0D8E4;border-radius:10px;}
.dl-card h3{font-size:14px;font-weight:600;margin-bottom:4px;}
.dl-sub{font-size:11px;color:#7A7A9A;margin-bottom:10px;}.dl-btn:not([hidden]){display:block;padding:8px 18px;background:#F472B6;color:#fff;border-radius:6px;font-weight:600;font-size:12px;text-decoration:none;text-align:center;}
.dl-side{padding:24px;background:transparent;display:flex;flex-direction:column;gap:10px;justify-content:center;}
@media(max-width:600px){.dl-grid{grid-template-columns:1fr;}}
.faq{padding:clamp(60px,7vw,80px) 0;}
.faq h2{font-size:clamp(22px,3vw,30px);font-weight:700;text-align:center;margin-bottom:40px;}
.faq-item{border-bottom:1px solid #F0D8E4;padding:16px 0;}
.faq-item summary{cursor:pointer;font-weight:600;font-size:15px;list-style:none;display:flex;justify-content:space-between;align-items:center;color:#1A1A2E;}
.faq-item summary::after{content:"+";color:#F472B6;font-size:18px;font-family:"SF Mono",Consolas,monospace;}
.faq-item[open] summary::after{content:"−";}
.faq-item p{margin-top:12px;color:#7A7A9A;font-size:13px;line-height:1.7;}
.ft{background:#FFE8EF;color:#7A7A9A;padding:40px 0 20px;text-align:center;font-size:13px;}
.ft img{height:24px;margin-bottom:14px;opacity:.4;}
/* === 图片大小约束 === */
img{max-width:100%;height:auto;display:block;}
.hero-banner img{max-height:420px;width:100%;object-fit:contain;border-radius:10px;}
.screen-grid img{max-height:480px;width:auto;object-fit:contain;margin:0 auto;border-radius:10px;}
.logo img,.ft img{max-height:28px;width:auto;}
@media(max-width:768px){.hero-banner img{max-height:260px;}.screen-grid img{max-height:360px;}.nav-links{display:none;}}
a.dl-card{color:inherit;text-decoration:none}