/* zLibirary.com.cn - shared styles */
:root{
  --bg:#0C1222;
  --bg2:#101a35;
  --cyan:#22D3EE;
  --amber:#FBBF24;
  --txt:#E8EEF7;
  --muted:#93A4BF;
  --card:rgba(255,255,255,.06);
  --card2:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.12);
  --grad:linear-gradient(135deg,#22D3EE 0%,#38BDF8 50%,#818CF8 100%);
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--txt);line-height:1.7;overflow-x:hidden;
  padding-bottom:78px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:720px;margin:0 auto;padding:0 16px;position:relative;z-index:2}

/* ===== dynamic background ===== */
.bg-fx{position:fixed;inset:0;z-index:0;overflow:hidden;background:
  radial-gradient(1200px 600px at 80% -10%,rgba(34,211,238,.18),transparent 60%),
  radial-gradient(900px 500px at -10% 30%,rgba(129,140,248,.15),transparent 60%),
  radial-gradient(700px 500px at 50% 110%,rgba(251,191,36,.10),transparent 60%),
  linear-gradient(180deg,#0C1222 0%,#0a1226 60%,#080d1c 100%);}
.orb{position:absolute;border-radius:50%;filter:blur(60px);opacity:.5;animation:float 14s ease-in-out infinite}
.orb:nth-of-type(1){width:340px;height:340px;background:#22D3EE;top:-80px;right:-60px}
.orb:nth-of-type(2){width:280px;height:280px;background:#818CF8;bottom:10%;left:-80px;animation-delay:-5s}
.orb:nth-of-type(3){width:200px;height:200px;background:#FBBF24;top:40%;right:20%;animation-delay:-9s;opacity:.3}
.page{position:absolute;width:60px;height:80px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:6px;animation:drift 22s linear infinite;transform:rotate(15deg)}
.page:nth-of-type(1){top:12%;left:8%;animation-delay:0s}
.page:nth-of-type(2){top:30%;right:12%;width:50px;height:70px;animation-delay:-6s;transform:rotate(-12deg)}
.page:nth-of-type(3){bottom:18%;left:18%;width:70px;height:95px;animation-delay:-12s}
.page:nth-of-type(4){top:60%;right:8%;width:55px;height:75px;animation-delay:-3s;transform:rotate(8deg)}
@keyframes float{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(30px) scale(1.08)}}
@keyframes drift{0%{transform:translateY(0) rotate(15deg);opacity:0}10%{opacity:.7}90%{opacity:.7}100%{transform:translateY(-120vh) rotate(40deg);opacity:0}}

/* ===== nav ===== */
.nav{position:sticky;top:0;z-index:50;background:rgba(12,18,34,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav .container{display:flex;align-items:center;justify-content:space-between;height:56px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px}
.brand img{width:32px;height:32px;border-radius:8px}
.brand b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:14px;font-size:13px;color:var(--muted)}
.nav-links a.on{color:var(--cyan)}

/* ===== hero ===== */
.hero{padding:32px 0 24px;text-align:center}
.hero h1{font-size:30px;line-height:1.25;margin-bottom:12px}
.hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{color:var(--muted);font-size:15px;margin-bottom:20px}
.phone{position:relative;width:230px;height:460px;margin:0 auto 24px;background:linear-gradient(145deg,#1a2540,#0d1528);border-radius:38px;padding:10px;border:2px solid rgba(34,211,238,.3);box-shadow:0 30px 60px rgba(0,0,0,.5),0 0 0 1px rgba(255,255,255,.05) inset}
.phone .screen{width:100%;height:100%;border-radius:28px;overflow:hidden;background:#000}
.phone .screen img{width:100%;height:100%;object-fit:cover}
.phone::after{content:"";position:absolute;top:14px;left:50%;transform:translateX(-50%);width:70px;height:20px;background:#0C1222;border-radius:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 30px;border-radius:30px;font-weight:700;font-size:16px;cursor:pointer;border:none;transition:transform .2s}
.btn-primary{background:var(--grad);color:#0C1222;box-shadow:0 10px 30px rgba(34,211,238,.35)}
.btn-primary:active{transform:scale(.97)}
.btn-ghost{background:var(--card);color:var(--txt);border:1px solid var(--line)}
.meta{display:flex;justify-content:center;gap:16px;margin-top:16px;font-size:12px;color:var(--muted);flex-wrap:wrap}
.meta span{display:inline-flex;align-items:center;gap:4px}
.meta i{font-style:normal;color:var(--cyan)}

/* ===== sections ===== */
section{padding:28px 0}
.sec-title{text-align:center;margin-bottom:20px}
.sec-title h2{font-size:22px;margin-bottom:6px}
.sec-title h2 .ac{color:var(--cyan)}
.sec-title p{color:var(--muted);font-size:13px}

/* stats */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 8px;text-align:center}
.stat b{display:block;font-size:22px;color:var(--cyan)}
.stat small{color:var(--muted);font-size:11px}

/* tags */
.tags{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.tag{padding:6px 14px;border-radius:20px;background:var(--card);border:1px solid var(--line);font-size:13px;color:var(--txt)}
.tag.hot{background:rgba(251,191,36,.15);border-color:rgba(251,191,36,.4);color:var(--amber)}

/* feature cards */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;transition:transform .2s}
.card:active{transform:translateY(-2px)}
.card .ic{font-size:26px;margin-bottom:8px}
.card h3{font-size:15px;margin-bottom:4px;color:var(--cyan)}
.card p{font-size:12px;color:var(--muted);line-height:1.6}

/* categories */
.cats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.cat{text-align:center;padding:12px 4px;background:var(--card);border-radius:12px;border:1px solid var(--line)}
.cat .ico{font-size:24px}
.cat span{display:block;font-size:11px;color:var(--muted);margin-top:4px}

/* screenshots */
.shots{display:flex;gap:12px;overflow-x:auto;padding-bottom:8px;scroll-snap-type:x mandatory}
.shots::-webkit-scrollbar{height:4px}
.shots::-webkit-scrollbar-thumb{background:var(--cyan);border-radius:4px}
.shot{flex:0 0 150px;scroll-snap-align:start}
.shot img{width:150px;height:250px;object-fit:cover;border-radius:14px;border:1px solid var(--line)}

/* steps */
.steps{display:flex;flex-direction:column;gap:14px}
.step{display:flex;gap:14px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px}
.step .num{flex:0 0 36px;width:36px;height:36px;border-radius:50%;background:var(--grad);color:#0C1222;display:flex;align-items:center;justify-content:center;font-weight:800}
.step h4{font-size:15px;margin-bottom:4px}
.step p{font-size:13px;color:var(--muted)}

/* table */
.cmp{overflow-x:auto;border-radius:14px;border:1px solid var(--line)}
table{width:100%;min-width:520px;border-collapse:collapse;font-size:13px}
th,td{padding:10px 8px;text-align:center;border-bottom:1px solid var(--line)}
th{background:rgba(34,211,238,.12);color:var(--cyan)}
tr:last-child td{border-bottom:none}
td:first-child,th:first-child{text-align:left;font-weight:600}

/* safety */
.safety{background:linear-gradient(135deg,rgba(34,211,238,.08),rgba(129,140,248,.08));border:1px solid var(--line);border-radius:16px;padding:18px}
.safety h3{color:var(--cyan);margin-bottom:8px;font-size:17px}
.safety ul{list-style:none;font-size:13px;color:var(--muted)}
.safety li{padding:4px 0 4px 22px;position:relative}
.safety li::before{content:"✓";position:absolute;left:0;color:var(--amber)}

/* voices */
.voices{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.voice{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px}
.voice .who{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.voice .av{width:30px;height:30px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#0C1222;font-weight:700;font-size:13px}
.voice b{font-size:13px}
.voice small{color:var(--muted);font-size:11px}
.voice p{font-size:12px;color:var(--muted)}

/* FAQ */
.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;overflow:hidden}
.faq summary{padding:14px 16px;cursor:pointer;font-weight:600;font-size:14px;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--cyan);font-size:20px;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .ans{padding:0 16px 14px;font-size:13px;color:var(--muted)}

/* CTA */
.cta{text-align:center;padding:32px 16px;background:linear-gradient(135deg,rgba(34,211,238,.1),rgba(251,191,36,.08));border-radius:20px;margin:24px 0;border:1px solid var(--line)}
.cta h2{font-size:22px;margin-bottom:8px}
.cta p{color:var(--muted);margin-bottom:18px;font-size:14px}

/* footer */
footer{padding:28px 0 20px;border-top:1px solid var(--line);margin-top:20px}
.foot-nav{display:flex;flex-wrap:wrap;gap:10px 18px;justify-content:center;margin-bottom:14px;font-size:13px;color:var(--muted)}
.foot-nav a:hover{color:var(--cyan)}
.copy{text-align:center;color:var(--muted);font-size:12px}
.copy .site{color:var(--cyan);font-weight:600}

/* fixed dock */
.dock{position:fixed;bottom:0;left:0;right:0;z-index:60;background:rgba(12,18,34,.95);backdrop-filter:blur(14px);border-top:1px solid var(--line);padding:10px 16px}
.dock .container{display:flex;align-items:center;gap:12px;padding:0 16px}
.dock .mini-logo{width:40px;height:40px;border-radius:10px;flex-shrink:0}
.dock .info{flex:1;min-width:0}
.dock .info b{font-size:14px}
.dock .info small{color:var(--muted);font-size:11px}
.dock .dl{flex-shrink:0;padding:10px 18px;border-radius:22px;background:var(--grad);color:#0C1222;font-weight:700;font-size:14px}

/* breadcrumb */
.crumb{font-size:12px;color:var(--muted);padding:12px 0}
.crumb a{color:var(--cyan)}

/* article (category pages) */
.article{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px}
.article h1{font-size:24px;margin-bottom:8px}
.article h2{font-size:18px;color:var(--cyan);margin:22px 0 10px}
.article h3{font-size:15px;margin:16px 0 8px;color:var(--txt)}
.article p{font-size:14px;color:var(--muted);margin-bottom:10px}
.article ul{margin:8px 0 12px 18px;color:var(--muted);font-size:14px}
.article li{margin-bottom:6px}
.article .rel{margin-top:24px;padding-top:18px;border-top:1px solid var(--line)}
.article .rel h3{color:var(--amber)}
.article .rel a{display:block;padding:8px 0;color:var(--cyan);font-size:14px}
.article .rel a::before{content:"→ ";color:var(--muted)}