/* ============================================
   91 - 原创样式表
   品牌：91 | 域名：nnncp.cn
   配色：糖心粉 #FF6B9D / 深莓红 #C44569 / 暖金 #F8B500 / 暗夜紫黑 #0F0A1E
   ============================================ */

/* --- CSS Reset & Base --- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:#0F0A1E;color:#E8E0F0;line-height:1.8;overflow-x:hidden}
a{color:#FF6B9D;text-decoration:none;transition:color .3s}
a:hover{color:#F8B500}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:#fff}

/* --- Container --- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* --- Header / Navigation --- */
.kmrnj0t{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(15,10,30,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,107,157,.15);transition:all .3s}
.zmd4x{display:flex;align-items:center;justify-content:space-between;height:68px;max-width:1200px;margin:0 auto;padding:0 20px}
.mmdwhi5a{display:flex;align-items:center;gap:10px}
.mmdwhi5a img{width:40px;height:40px;border-radius:8px}
.mmdwhi5a .go1igbw9{font-size:1.3rem;font-weight:800;background:linear-gradient(135deg,#FF6B9D,#F8B500);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.plg5j{display:flex;align-items:center;gap:6px}
.plg5j a{padding:8px 14px;border-radius:8px;font-size:.9rem;color:#E8E0F0;transition:all .3s;white-space:nowrap}
.plg5j a:hover,.plg5j a.active{background:rgba(255,107,157,.15);color:#FF6B9D}
.qohe294{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.qohe294 span{width:24px;height:2px;background:#FF6B9D;border-radius:2px;transition:all .3s}

/* --- Search Bar --- */
.pp3j2r{background:rgba(26,18,48,.8);border-bottom:1px solid rgba(255,107,157,.1);padding:12px 0;margin-top:68px}
.pp3j2r .container{display:flex;justify-content:center}
.zh7zco1{display:flex;align-items:center;width:100%;max-width:600px;background:rgba(45,27,105,.6);border:1px solid rgba(255,107,157,.25);border-radius:30px;overflow:hidden;transition:border-color .3s}
.zh7zco1:focus-within{border-color:#FF6B9D}
.zh7zco1 input{flex:1;padding:10px 20px;background:transparent;border:none;color:#E8E0F0;font-size:.95rem;outline:none}
.zh7zco1 input::placeholder{color:rgba(232,224,240,.4)}
.zh7zco1 button{padding:10px 24px;background:linear-gradient(135deg,#FF6B9D,#C44569);border:none;color:#fff;font-size:.9rem;cursor:pointer;transition:opacity .3s}
.zh7zco1 button:hover{opacity:.85}

/* --- Hero Banner --- */
.vpporg{position:relative;height:75vh;min-height:480px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.lb73yz{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.55)}
.jwdgvf{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,10,30,.3) 0%,rgba(15,10,30,.85) 100%)}
.p4l0n6p{position:relative;z-index:2;text-align:center;padding:0 20px;max-width:800px}
.p4l0n6p h1{font-size:3rem;margin-bottom:16px;text-shadow:0 2px 20px rgba(255,107,157,.3)}
.p4l0n6p h1 .highlight{background:linear-gradient(135deg,#FF6B9D,#F8B500);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.p4l0n6p p{font-size:1.15rem;color:rgba(232,224,240,.85);margin-bottom:28px;line-height:1.8}
.c8h9wd4{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.ljha2j{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;background:linear-gradient(135deg,#FF6B9D,#C44569);color:#fff;border-radius:30px;font-weight:600;font-size:1rem;border:none;cursor:pointer;transition:transform .3s,box-shadow .3s}
.ljha2j:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(255,107,157,.35);color:#fff}
.mosbe1{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;background:transparent;color:#FF6B9D;border:2px solid #FF6B9D;border-radius:30px;font-weight:600;font-size:1rem;cursor:pointer;transition:all .3s}
.mosbe1:hover{background:rgba(255,107,157,.1);color:#FF6B9D}

/* --- Section Common --- */
.section{padding:80px 0}
.kjqk1m{text-align:center;margin-bottom:50px}
.kjqk1m h2{font-size:2.2rem;margin-bottom:12px}
.kjqk1m h2 .accent{color:#FF6B9D}
.kjqk1m p{color:rgba(232,224,240,.65);font-size:1.05rem;max-width:650px;margin:0 auto}
.u341r3{background:rgba(26,18,48,.5)}

/* --- Video Card Grid --- */
.yde833iw{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.m6feu{position:relative;border-radius:16px;overflow:hidden;background:#1A1230;border:1px solid rgba(255,107,157,.1);transition:transform .3s,box-shadow .3s}
.m6feu:hover{transform:translateY(-6px);box-shadow:0 12px 35px rgba(255,107,157,.15)}
.cups9{position:relative;aspect-ratio:16/9;overflow:hidden}
.cups9 img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.m6feu:hover .cups9 img{transform:scale(1.05)}
.e4qtaq1d{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;background:rgba(15,10,30,.45)}
.m6feu:hover .e4qtaq1d{opacity:1}
.e4qtaq1d .wx6bqn{width:60px;height:60px;background:rgba(255,107,157,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:transform .3s}
.e4qtaq1d .wx6bqn::after{content:"";display:block;width:0;height:0;border-style:solid;border-width:12px 0 12px 20px;border-color:transparent transparent transparent #fff;margin-left:4px}
.m6feu:hover .e4qtaq1d .wx6bqn{transform:scale(1.1)}
.tjqj7gh{padding:16px}
.tjqj7gh h3{font-size:1rem;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.xd0hyr1h{display:flex;gap:16px;color:rgba(232,224,240,.5);font-size:.82rem}
.xd0hyr1h span{display:flex;align-items:center;gap:4px}
.pak7ar{display:flex;gap:6px;margin-top:10px;flex-wrap:wrap}
.pak7ar span{padding:3px 10px;background:rgba(255,107,157,.1);color:#FF6B9D;border-radius:12px;font-size:.75rem}

/* --- Service Cards --- */
.paarx{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.teyr78{padding:36px 28px;background:linear-gradient(145deg,rgba(26,18,48,.8),rgba(45,27,105,.3));border:1px solid rgba(255,107,157,.1);border-radius:16px;text-align:center;transition:all .3s}
.teyr78:hover{border-color:rgba(255,107,157,.35);transform:translateY(-4px)}
.rra3u{width:72px;height:72px;margin:0 auto 20px;background:linear-gradient(135deg,rgba(255,107,157,.2),rgba(248,181,0,.2));border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:2rem}
.teyr78 h3{font-size:1.15rem;margin-bottom:10px}
.teyr78 p{color:rgba(232,224,240,.6);font-size:.9rem;line-height:1.7}

/* --- Expert Cards --- */
.dq749u{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.bebvuhzf{background:#1A1230;border:1px solid rgba(255,107,157,.1);border-radius:16px;overflow:hidden;text-align:center;transition:all .3s}
.bebvuhzf:hover{border-color:rgba(255,107,157,.3);transform:translateY(-4px)}
.hkuwpof{width:100%;aspect-ratio:1;overflow:hidden}
.hkuwpof img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.bebvuhzf:hover .hkuwpof img{transform:scale(1.05)}
.gwxn28tw{padding:20px 16px}
.gwxn28tw h3{font-size:1.05rem;margin-bottom:4px}
.gwxn28tw .role{color:#FF6B9D;font-size:.85rem;margin-bottom:8px}
.gwxn28tw p{color:rgba(232,224,240,.55);font-size:.82rem;line-height:1.6;margin-bottom:12px}
.xy3p39{display:flex;gap:10px;justify-content:center}
.xy3p39 a{padding:6px 16px;border-radius:20px;font-size:.8rem;border:1px solid rgba(255,107,157,.3);color:#FF6B9D;transition:all .3s}
.xy3p39 a:hover{background:#FF6B9D;color:#fff}

/* --- Community Section --- */
.xmnwmm{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.kn537c{border-radius:16px;overflow:hidden;position:relative;aspect-ratio:16/10;background:#1A1230}
.kn537c img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.kn537c:hover img{transform:scale(1.05)}
.kn537c .overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(15,10,30,.9) 100%);display:flex;flex-direction:column;justify-content:flex-end;padding:24px}
.kn537c .overlay h3{font-size:1.1rem;margin-bottom:6px}
.kn537c .overlay p{color:rgba(232,224,240,.65);font-size:.85rem}

/* --- Partners --- */
.gwen9{display:flex;flex-wrap:wrap;gap:24px;justify-content:center;align-items:center}
.eyg0hk{width:140px;height:80px;background:rgba(26,18,48,.6);border:1px solid rgba(255,107,157,.1);border-radius:12px;display:flex;align-items:center;justify-content:center;padding:12px;transition:all .3s}
.eyg0hk:hover{border-color:#FF6B9D;background:rgba(255,107,157,.05)}
.eyg0hk span{font-size:.85rem;color:rgba(232,224,240,.6);text-align:center;font-weight:600}

/* --- Reviews --- */
.cd4n1{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.eor3m{padding:28px;background:rgba(26,18,48,.6);border:1px solid rgba(255,107,157,.1);border-radius:16px;transition:all .3s}
.eor3m:hover{border-color:rgba(255,107,157,.3)}
.go0uyh2{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.uxriayqk{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#FF6B9D,#C44569);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.1rem;flex-shrink:0}
.zdwldwg .name{font-weight:600;font-size:.95rem}
.zdwldwg .date{color:rgba(232,224,240,.4);font-size:.8rem}
.cblu3{color:#F8B500;font-size:.9rem;letter-spacing:2px;margin-bottom:10px}
.eor3m p{color:rgba(232,224,240,.7);font-size:.9rem;line-height:1.8}

/* --- FAQ --- */
.wic7b2c{max-width:800px;margin:0 auto}
.o65o12xt{border:1px solid rgba(255,107,157,.1);border-radius:12px;margin-bottom:12px;overflow:hidden;background:rgba(26,18,48,.5)}
.cx7m5{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:1rem;transition:background .3s}
.cx7m5:hover{background:rgba(255,107,157,.05)}
.cx7m5 .arrow{transition:transform .3s;color:#FF6B9D;font-size:1.2rem}
.faq-item.active .cx7m5 .arrow{transform:rotate(180deg)}
.hnryure{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 24px}
.faq-item.active .hnryure{max-height:300px;padding:0 24px 18px}
.hnryure p{color:rgba(232,224,240,.65);font-size:.9rem;line-height:1.8}

/* --- Contact --- */
.uvx7le2d{display:grid;grid-template-columns:repeat(2,1fr);gap:40px;align-items:start}
.ntka0{display:flex;flex-direction:column;gap:20px}
.wdav37e{display:flex;gap:16px;align-items:flex-start}
.uz9lb753{width:48px;height:48px;background:linear-gradient(135deg,rgba(255,107,157,.2),rgba(248,181,0,.2));border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1.3rem}
.yt3ss h4{font-size:.95rem;margin-bottom:4px}
.yt3ss p{color:rgba(232,224,240,.6);font-size:.88rem}
.ib4utun{display:flex;gap:24px;justify-content:center}
.o6nv5{text-align:center}
.o6nv5 img{width:150px;height:150px;border-radius:12px;border:2px solid rgba(255,107,157,.2);margin-bottom:8px}
.o6nv5 p{font-size:.82rem;color:rgba(232,224,240,.5)}

/* --- How-To Guide --- */
.yvtp28b{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:30px}
.u1zqw5{text-align:center;padding:28px 20px;background:rgba(26,18,48,.5);border:1px solid rgba(255,107,157,.1);border-radius:16px;position:relative}
.oeave99{width:48px;height:48px;background:linear-gradient(135deg,#FF6B9D,#C44569);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:1.2rem;font-weight:800;color:#fff}
.u1zqw5 h4{font-size:1rem;margin-bottom:8px}
.u1zqw5 p{color:rgba(232,224,240,.55);font-size:.85rem;line-height:1.6}

/* --- Footer --- */
.gwg0f4{background:rgba(10,6,20,.95);border-top:1px solid rgba(255,107,157,.1);padding:50px 0 0}
.l59lza{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.j1w99li .go1igbw9{font-size:1.3rem;font-weight:800;background:linear-gradient(135deg,#FF6B9D,#F8B500);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:12px}
.j1w99li p{color:rgba(232,224,240,.5);font-size:.85rem;line-height:1.7;margin-bottom:16px}
.n7boxo h4{font-size:1rem;margin-bottom:16px;color:#FF6B9D}
.n7boxo a{display:block;color:rgba(232,224,240,.55);font-size:.88rem;padding:4px 0;transition:color .3s}
.n7boxo a:hover{color:#FF6B9D}
.t6j9yr5n{display:flex;gap:12px;margin-top:12px}
.t6j9yr5n a{width:36px;height:36px;border-radius:50%;background:rgba(255,107,157,.1);display:flex;align-items:center;justify-content:center;font-size:.85rem;color:#FF6B9D;transition:all .3s}
.t6j9yr5n a:hover{background:#FF6B9D;color:#fff}
.i4ceuu1{border-top:1px solid rgba(255,107,157,.08);padding:20px 0;text-align:center}
.i4ceuu1 p{color:rgba(232,224,240,.35);font-size:.82rem}
.i4ceuu1 .q9l9oyy{color:rgba(232,224,240,.45);font-size:.8rem;margin-top:6px}

/* --- Share Buttons --- */
.hvndm4{display:flex;gap:10px;justify-content:center;margin-top:24px;flex-wrap:wrap}
.wdruz{padding:8px 20px;border-radius:20px;font-size:.82rem;border:1px solid rgba(255,107,157,.2);color:#E8E0F0;transition:all .3s;cursor:pointer;background:transparent}
.wdruz:hover{background:rgba(255,107,157,.15);border-color:#FF6B9D;color:#FF6B9D}

/* --- Breadcrumb --- */
.ap77o7{padding:14px 0;font-size:.85rem;color:rgba(232,224,240,.5)}
.ap77o7 a{color:#FF6B9D}
.ap77o7 span{margin:0 8px;color:rgba(232,224,240,.3)}

/* --- Inner Page Hero --- */
.u253kqaf{padding:120px 0 50px;text-align:center;background:linear-gradient(180deg,rgba(26,18,48,.8),rgba(15,10,30,1))}
.u253kqaf h1{font-size:2.4rem;margin-bottom:12px}
.u253kqaf p{color:rgba(232,224,240,.6);font-size:1.05rem}

/* --- AI Section --- */
.s03p1o9t{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.u73ph2e{padding:32px 24px;background:linear-gradient(145deg,rgba(26,18,48,.7),rgba(45,27,105,.25));border:1px solid rgba(248,181,0,.15);border-radius:16px;text-align:center;transition:all .3s}
.u73ph2e:hover{border-color:rgba(248,181,0,.4);transform:translateY(-4px)}
.u73ph2e .sk3t4ty{width:64px;height:64px;margin:0 auto 18px;background:linear-gradient(135deg,rgba(248,181,0,.2),rgba(255,107,157,.2));border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.8rem}
.u73ph2e h3{font-size:1.05rem;margin-bottom:8px;color:#F8B500}
.u73ph2e p{color:rgba(232,224,240,.55);font-size:.88rem;line-height:1.7}

/* --- Stats Bar --- */
.e7dgv{display:flex;justify-content:center;gap:60px;padding:40px 0;flex-wrap:wrap}
.jmpuv8{text-align:center}
.jmpuv8 .num{font-size:2.5rem;font-weight:800;background:linear-gradient(135deg,#FF6B9D,#F8B500);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.jmpuv8 .label{color:rgba(232,224,240,.5);font-size:.88rem;margin-top:4px}

/* --- Responsive --- */
@media(max-width:1024px){
  .yde833iw,.paarx,.s03p1o9t{grid-template-columns:repeat(2,1fr)}
  .dq749u{grid-template-columns:repeat(2,1fr)}
  .l59lza{grid-template-columns:repeat(2,1fr)}
  .yvtp28b{grid-template-columns:repeat(2,1fr)}
  .p4l0n6p h1{font-size:2.4rem}
}
@media(max-width:768px){
  .plg5j{position:fixed;top:68px;left:0;width:100%;background:rgba(15,10,30,.98);flex-direction:column;padding:20px;gap:4px;transform:translateY(-120%);transition:transform .3s;border-bottom:1px solid rgba(255,107,157,.15)}
  .main-nav.open{transform:translateY(0)}
  .qohe294{display:flex}
  .yde833iw,.paarx,.xmnwmm,.s03p1o9t{grid-template-columns:1fr}
  .dq749u{grid-template-columns:repeat(2,1fr)}
  .cd4n1{grid-template-columns:1fr}
  .uvx7le2d{grid-template-columns:1fr}
  .l59lza{grid-template-columns:1fr}
  .yvtp28b{grid-template-columns:1fr}
  .vpporg{height:60vh;min-height:400px}
  .p4l0n6p h1{font-size:1.8rem}
  .p4l0n6p p{font-size:1rem}
  .section{padding:50px 0}
  .kjqk1m h2{font-size:1.7rem}
  .e7dgv{gap:30px}
  .jmpuv8 .num{font-size:1.8rem}
  .ib4utun{flex-direction:column;align-items:center}
}
@media(max-width:480px){
  .dq749u{grid-template-columns:1fr}
  .zmd4x{height:58px}
  .pp3j2r{margin-top:58px}
  .p4l0n6p h1{font-size:1.5rem}
  .ljha2j,.mosbe1{padding:12px 24px;font-size:.9rem}
}

/* --- Lazy Load --- */
img[data-src]{opacity:0;transition:opacity .5s}
img.loaded{opacity:1}

/* --- Animation --- */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.fade-in{opacity:0;transform:translateY(30px);transition:all .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}