/* ???? kaobeimhw - ????? */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0f0f1a;--surface:#1a1a2e;--card:#16213e;
  --accent:#e94560;--accent2:#ff6b35;--text:#eee;--muted:#8892b0;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
a{color:var(--accent);text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{max-width:1100px;margin:0 auto;padding:0 16px}

/* ??????? */
.hero-bg{position:relative;background:var(--surface);overflow-x:hidden}
.hero-bg::before{content:"";position:absolute;inset:0;background:repeating-conic-gradient(from 0deg at 50% 50%,transparent 0deg,rgba(233,69,96,.03) 2deg,transparent 4deg);pointer-events:none}
.hero-bg::after{content:"";position:absolute;bottom:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--accent),var(--accent2),var(--accent))}

header{padding:16px 0;position:relative;z-index:2}
.header-inner{display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;font-size:1.25rem;font-weight:800;color:#fff}
.logo img{width:44px;height:44px;border-radius:10px}
nav{display:flex;gap:20px;flex-wrap:wrap}
nav a{color:var(--muted);font-size:.9rem;transition:color .2s}
nav a:hover{color:var(--accent)}

.hero{padding:48px 0 56px;text-align:center;position:relative;z-index:2}
.hero h1{font-size:clamp(1.75rem,5vw,2.75rem);font-weight:900;line-height:1.2;margin-bottom:12px;background:linear-gradient(135deg,#fff,var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero .subtitle{color:var(--muted);font-size:1.05rem;margin-bottom:28px;max-width:560px;margin-left:auto;margin-right:auto}
.hero-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:36px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:8px;font-weight:700;font-size:1rem;border:none;cursor:pointer;transition:transform .2s,box-shadow .2s}
.btn:active{transform:scale(.97)}
.btn-android{background:linear-gradient(135deg,var(--accent),#c0392b);color:#fff;box-shadow:0 4px 20px rgba(233,69,96,.4)}
.btn-ios{background:linear-gradient(135deg,#533483,#7b4397);color:#fff;box-shadow:0 4px 20px rgba(83,52,131,.4)}
.btn-sm{padding:10px 20px;font-size:.9rem}

.hero-phone{max-width:280px;margin:0 auto;border-radius:24px;overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.5);border:3px solid var(--accent)}

/* ??? */
.features{padding:56px 0;background:var(--bg)}
.section-title{text-align:center;font-size:1.5rem;margin-bottom:32px;font-weight:800}
.section-title span{color:var(--accent)}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.feature-card{background:var(--card);border-radius:12px;padding:24px;border-left:4px solid var(--accent);transition:transform .2s}
.feature-card:hover{transform:translateY(-4px)}
.feature-card h3{font-size:1.1rem;margin-bottom:8px;color:#fff}
.feature-card p{color:var(--muted);font-size:.9rem}

/* ??? */
.screenshots{padding:56px 0;background:var(--surface)}
.screenshot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;justify-items:center}
.screenshot-grid img{border-radius:16px;max-width:220px;box-shadow:0 8px 30px rgba(0,0,0,.4)}

/* ??? */
.guide{padding:56px 0}
.guide-steps{counter-reset:step;max-width:700px;margin:0 auto}
.guide-step{counter-increment:step;display:flex;gap:16px;margin-bottom:24px;align-items:flex-start}
.guide-step::before{content:counter(step);flex-shrink:0;width:36px;height:36px;background:var(--accent);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.9rem}
.guide-step h3{font-size:1rem;margin-bottom:4px}
.guide-step p{color:var(--muted);font-size:.9rem}

/* FAQ */
.faq{padding:56px 0;background:var(--surface)}
.faq-item{background:var(--card);border-radius:10px;padding:20px;margin-bottom:12px}
.faq-item h3{font-size:1rem;margin-bottom:8px;color:var(--accent2)}
.faq-item p{color:var(--muted);font-size:.9rem}

/* ?? */
.page-hero{padding:40px 0 32px;background:var(--surface);text-align:center}
.page-hero h1{font-size:clamp(1.5rem,4vw,2rem);margin-bottom:8px}
.page-hero p{color:var(--muted)}
.content{padding:40px 0;max-width:800px;margin:0 auto}
.content h2{font-size:1.25rem;margin:28px 0 12px;color:var(--accent2)}
.content p,.content li{color:var(--muted);margin-bottom:12px;font-size:.95rem}
.content ul{padding-left:20px;margin-bottom:16px}
.content ol{padding-left:20px;margin-bottom:16px}

/* ?? */
footer{background:#0a0a14;padding:32px 0 100px;text-align:center}
.disclaimer{background:rgba(233,69,96,.15);border:1px solid var(--accent);border-radius:8px;padding:16px;margin-bottom:24px;color:#ffb3c1;font-size:.85rem;font-weight:600;line-height:1.7}
.footer-links{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:20px}
.footer-links a{color:var(--muted);font-size:.85rem}
.footer-links a:hover{color:var(--accent)}
.download-stats{color:var(--muted);font-size:.85rem;margin-bottom:12px}
.download-stats strong{color:var(--accent2)}
.copyright{color:#555;font-size:.8rem}

/* ????? */
.float-bar{position:fixed;bottom:0;left:0;right:0;background:rgba(15,15,26,.95);backdrop-filter:blur(12px);border-top:2px solid var(--accent);padding:10px 16px;display:flex;align-items:center;justify-content:center;gap:10px;z-index:999;transform:translateY(100%);transition:transform .3s ease;box-shadow:0 -4px 20px rgba(0,0,0,.5)}
.float-bar.visible{transform:translateY(0)}
.float-bar .bar-text{font-size:.85rem;color:var(--muted);display:none}
.float-bar .btn{flex:1;max-width:180px;justify-content:center;padding:12px 16px;font-size:.9rem}

@media(min-width:480px){
  .float-bar .bar-text{display:block;margin-right:8px}
  .float-bar .btn{flex:none}
}

@media(max-width:640px){
  nav{gap:12px}
  nav a{font-size:.8rem}
  .hero{padding:32px 0 40px}
}

/* ?????? */
.stats-bar{display:flex;justify-content:center;flex-wrap:wrap;gap:24px;padding:32px 0;background:var(--card);border-radius:12px;margin:0 0 8px}
.stat-item{text-align:center;min-width:100px}
.stat-item strong{display:block;font-size:1.6rem;color:var(--accent2);font-weight:900}
.stat-item span{font-size:.82rem;color:var(--muted)}
.intro{padding:56px 0;background:var(--bg)}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center}
.intro-text h2{font-size:1.4rem;margin-bottom:16px;font-weight:800}
.intro-text h2 span{color:var(--accent)}
.intro-text p{color:var(--muted);font-size:.93rem;margin-bottom:12px;line-height:1.8}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag-cloud span{background:var(--card);border:1px solid rgba(233,69,96,.3);color:var(--accent2);padding:6px 14px;border-radius:20px;font-size:.82rem}
.info-table{width:100%;border-collapse:collapse;background:var(--card);border-radius:12px;overflow:hidden;margin-top:8px}
.info-table th,.info-table td{padding:14px 18px;text-align:left;font-size:.88rem;border-bottom:1px solid rgba(255,255,255,.06)}
.info-table th{color:var(--muted);font-weight:600;width:35%}
.info-table td{color:var(--text)}
.info-table tr:last-child th,.info-table tr:last-child td{border-bottom:none}
.categories{padding:56px 0;background:var(--surface)}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px}
.cat-item{background:var(--card);border-radius:10px;padding:20px 14px;text-align:center;border-top:3px solid var(--accent);transition:transform .2s}
.cat-item:hover{transform:translateY(-3px)}
.cat-item .emoji{font-size:1.8rem;margin-bottom:8px}
.cat-item h4{font-size:.9rem;margin-bottom:4px}
.cat-item p{font-size:.78rem;color:var(--muted)}
.reviews{padding:56px 0}
.reviews-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.review-card{background:var(--card);border-radius:12px;padding:22px;border:1px solid rgba(233,69,96,.15)}
.review-card .stars{color:var(--accent2);font-size:.9rem;margin-bottom:10px}
.review-card p{color:var(--muted);font-size:.88rem;font-style:italic;margin-bottom:10px;line-height:1.7}
.review-card .author{font-size:.8rem;color:var(--muted)}
.cta-block{text-align:center;padding:48px 24px;background:linear-gradient(135deg,var(--card),var(--surface));border-radius:16px;margin:48px 0 0;border:1px solid rgba(233,69,96,.2)}
.cta-block h2{font-size:1.3rem;margin-bottom:10px}
.cta-block p{color:var(--muted);margin-bottom:20px;font-size:.92rem}

@media(max-width:768px){
  .intro-grid{grid-template-columns:1fr}
  .stats-bar{gap:16px}
  .stat-item strong{font-size:1.3rem}
}

/* 移动端右上角菜单 */
.header-inner{position:relative}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:10px;border:1px solid rgba(233,69,96,.35);border-radius:10px;background:var(--card);cursor:pointer}
.nav-toggle span{display:block;height:2px;width:100%;background:var(--accent2);border-radius:1px;transition:transform .25s,opacity .2s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:1000}
.nav-mask.on{display:block}
body.nav-open{overflow:hidden}
@media(max-width:768px){
  /* 抬高整层 header，避免被遮罩/正文盖住 */
  header{position:relative;z-index:1010}
  .hero{z-index:1}
  .nav-toggle{display:flex;position:relative;z-index:1012}
  .site-nav,header nav,.header-inner nav{
    display:none;position:fixed;top:64px;right:12px;left:auto;
    min-width:200px;flex-direction:column;gap:0;flex-wrap:nowrap;
    background:var(--card);border:1px solid rgba(233,69,96,.25);border-radius:12px;
    padding:8px;box-shadow:0 16px 48px rgba(0,0,0,.45);z-index:1011
  }
  .site-nav.is-open,header nav.is-open,.header-inner nav.is-open{display:flex}
  .site-nav a,header nav a,.header-inner nav a{display:block;padding:12px 14px;border-radius:8px;font-size:.92rem}
  .site-nav a:active,.site-nav a:hover,header nav a:hover{background:rgba(233,69,96,.12);color:var(--accent2)}
  body.nav-open .float-bar{z-index:999}
}