/* 国产 y37315.cn — 霓虹赛博朋克主题 · 完全原创 */
:root {
    --neon-purple: #9b59b6;
    --neon-cyan:   #00d4ff;
    --neon-pink:   #e91e8c;
    --bg-deep:     #0b0b14;
    --bg-card:     #13131f;
    --bg-panel:    #1a1a2e;
    --border-glow: rgba(155,89,182,0.35);
    --text-bright: #f0f0ff;
    --text-dim:    #8888aa;
    --font-main:   "PingFang SC","Microsoft YaHei",sans-serif;
    --radius:      10px;
    --glow-purple: 0 0 18px rgba(155,89,182,0.6);
    --glow-cyan:   0 0 18px rgba(0,212,255,0.5);
    --shell:       min(1240px, calc(100% - 40px));
    --ease:        cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg-deep);color:var(--text-bright);font-family:var(--font-main);line-height:1.65;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--neon-cyan)}
img,video{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.wrap{width:var(--shell);margin:0 auto}

/* ── Scrollbar ── */
::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-track{background:var(--bg-deep)}
::-webkit-scrollbar-thumb{background:var(--neon-purple);border-radius:3px}

/* ── Header ── */
.site-hd{
    position:sticky;top:0;z-index:200;
    background:rgba(11,11,20,.92);
    border-bottom:1px solid var(--border-glow);
    backdrop-filter:blur(14px);
}
.hd-inner{
    display:flex;align-items:center;justify-content:space-between;
    height:72px;
}
.logo-wrap{display:flex;align-items:center;gap:14px}
.logo-wrap img{width:44px;height:44px;border-radius:8px;box-shadow:var(--glow-purple)}
.logo-text{font-size:22px;font-weight:900;letter-spacing:2px;color:var(--text-bright)}
.logo-text em{font-style:normal;color:var(--neon-purple)}
.logo-sub{font-size:11px;color:var(--text-dim);letter-spacing:1px}

.main-nav{display:flex;gap:28px}
.main-nav a{
    font-size:15px;font-weight:600;color:var(--text-dim);
    padding:6px 0;position:relative;
}
.main-nav a::after{
    content:'';position:absolute;bottom:0;left:0;
    width:0;height:2px;
    background:linear-gradient(90deg,var(--neon-purple),var(--neon-cyan));
    transition:width .3s var(--ease);
}
.main-nav a:hover,
.main-nav a.on{color:var(--text-bright)}
.main-nav a:hover::after,
.main-nav a.on::after{width:100%}

/* ── Search Bar ── */
.search-strip{
    background:var(--bg-panel);
    border-bottom:1px solid var(--border-glow);
    padding:12px 0;
}
.search-box{
    display:flex;align-items:center;
    max-width:580px;margin:0 auto;
    background:var(--bg-deep);
    border:1px solid var(--border-glow);
    border-radius:24px;padding:6px 18px;
    transition:border-color .25s;
}
.search-box:focus-within{border-color:var(--neon-purple);box-shadow:var(--glow-purple)}
.search-box input{
    flex:1;background:transparent;border:none;
    color:var(--text-bright);font-size:14px;
    padding:6px;outline:none;
}
.search-box input::placeholder{color:var(--text-dim)}
.search-box button{
    background:transparent;border:none;
    color:var(--neon-cyan);cursor:pointer;
    font-size:15px;font-weight:700;
    padding:4px 8px;
}

/* ── Breadcrumb ── */
.bc{padding:18px 0;font-size:13px;color:var(--text-dim)}
.bc a:hover{color:var(--neon-cyan)}

/* ── Section ── */
.sec{padding:80px 0}
.sec-alt{background:var(--bg-panel)}
.sec-hd{text-align:center;margin-bottom:52px}
.sec-hd h2{
    font-size:clamp(26px,3.5vw,38px);font-weight:900;
    color:var(--text-bright);margin-bottom:14px;
    position:relative;display:inline-block;
}
.sec-hd h2::before{
    content:'';position:absolute;bottom:-10px;left:50%;
    transform:translateX(-50%);
    width:50px;height:3px;border-radius:2px;
    background:linear-gradient(90deg,var(--neon-purple),var(--neon-cyan));
}
.sec-hd p{color:var(--text-dim);font-size:15px;margin-top:18px}

/* ── Grid ── */
.g3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.g4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.g2{display:grid;grid-template-columns:repeat(2,1fr);gap:48px}

/* ── Video Card ── */
.vcard{
    background:var(--bg-card);
    border:1px solid var(--border-glow);
    border-radius:var(--radius);
    overflow:hidden;
    transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s;
    position:relative;
}
.vcard:hover{
    transform:translateY(-8px);
    box-shadow:0 16px 40px rgba(155,89,182,.25);
    border-color:var(--neon-purple);
}
.vthumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.vthumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.vcard:hover .vthumb img{transform:scale(1.07)}
.play-icon{
    position:absolute;top:50%;left:50%;
    transform:translate(-50%,-50%);
    width:56px;height:56px;border-radius:50%;
    background:rgba(155,89,182,.85);
    display:flex;align-items:center;justify-content:center;
    opacity:0;transition:opacity .3s;
    box-shadow:var(--glow-purple);
}
.play-icon::after{
    content:'';
    border-style:solid;
    border-width:9px 0 9px 15px;
    border-color:transparent transparent transparent #fff;
    margin-left:4px;
}
.vcard:hover .play-icon{opacity:1}
.vtag{
    position:absolute;top:10px;left:10px;
    background:linear-gradient(135deg,var(--neon-purple),var(--neon-pink));
    color:#fff;padding:3px 10px;font-size:11px;
    font-weight:700;border-radius:4px;letter-spacing:.5px;
}
.vbody{padding:18px 20px}
.vbody h3{
    font-size:16px;color:var(--text-bright);
    margin-bottom:8px;line-height:1.4;
    display:-webkit-box;-webkit-line-clamp:2;
    -webkit-box-orient:vertical;overflow:hidden;
}
.vbody p{font-size:13px;color:var(--text-dim);margin-bottom:12px}
.vmeta{
    display:flex;justify-content:space-between;
    font-size:12px;color:var(--text-dim);
    border-top:1px solid var(--border-glow);padding-top:12px;
}

/* ── Buttons ── */
.btn{
    display:inline-flex;align-items:center;gap:6px;
    padding:11px 28px;border-radius:24px;
    font-weight:700;font-size:14px;
    background:linear-gradient(135deg,var(--neon-purple),var(--neon-pink));
    color:#fff;border:none;cursor:pointer;
    transition:opacity .25s,transform .2s;
    box-shadow:0 4px 20px rgba(155,89,182,.4);
}
.btn:hover{opacity:.88;transform:translateY(-2px);color:#fff}
.btn-ghost{
    background:transparent;
    border:1.5px solid var(--neon-purple);
    color:var(--neon-purple);
    box-shadow:none;
}
.btn-ghost:hover{background:var(--neon-purple);color:#fff}

/* ── Feature Card ── */
.fcard{
    background:var(--bg-card);border:1px solid var(--border-glow);
    border-radius:var(--radius);padding:28px;
    transition:border-color .3s,box-shadow .3s;
}
.fcard:hover{border-color:var(--neon-cyan);box-shadow:var(--glow-cyan)}
.fcard-icon{font-size:36px;margin-bottom:16px}
.fcard h3{font-size:18px;color:var(--text-bright);margin-bottom:10px}
.fcard p{font-size:13px;color:var(--text-dim);line-height:1.6}

/* ── Stats Bar ── */
.stats-bar{
    display:flex;gap:40px;flex-wrap:wrap;
    padding:32px 0;border-top:1px solid var(--border-glow);
    margin-top:32px;
}
.stat-item strong{
    display:block;font-size:32px;font-weight:900;
    background:linear-gradient(135deg,var(--neon-purple),var(--neon-cyan));
    -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.stat-item span{font-size:13px;color:var(--text-dim)}

/* ── Expert Card ── */
.ecard{
    background:var(--bg-card);border:1px solid var(--border-glow);
    border-radius:var(--radius);padding:26px;
}
.ecard-role{
    font-size:11px;font-weight:700;letter-spacing:1px;
    color:var(--neon-cyan);text-transform:uppercase;margin-bottom:12px;
}
.ecard h3{font-size:19px;color:var(--text-bright);margin-bottom:10px}
.ecard p{font-size:13px;color:var(--text-dim);margin-bottom:18px}
.ecard-links{display:flex;gap:12px}
.ecard-links a{
    font-size:13px;font-weight:700;
    color:var(--neon-purple);
    text-decoration:underline;text-underline-offset:3px;
}

/* ── Review Card ── */
.rcard{
    background:var(--bg-card);border:1px solid var(--border-glow);
    border-radius:var(--radius);padding:24px;
}
.rcard-stars{color:#f5c518;margin-bottom:10px;font-size:15px}
.rcard p{font-size:14px;color:var(--text-dim);margin-bottom:14px;line-height:1.7}
.rcard-author{font-size:12px;color:var(--neon-purple)}

/* ── FAQ ── */
.faq-item{border-bottom:1px solid var(--border-glow)}
.faq-item summary{
    padding:18px 0;font-weight:700;color:var(--text-bright);
    cursor:pointer;list-style:none;
    display:flex;justify-content:space-between;align-items:center;
}
.faq-item summary::after{
    content:'+';font-size:22px;color:var(--neon-purple);
    transition:transform .3s;flex-shrink:0;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{padding:0 0 18px;color:var(--text-dim);font-size:14px;line-height:1.7}

/* ── Footer ── */
.site-ft{
    background:#08080f;
    border-top:1px solid var(--border-glow);
    padding:60px 0 28px;
    margin-top:80px;
}
.ft-grid{
    display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;
    gap:40px;margin-bottom:48px;
}
.ft-brand h3{font-size:20px;color:var(--text-bright);margin-bottom:16px}
.ft-brand p{font-size:13px;color:var(--text-dim);margin-bottom:18px;line-height:1.7}
.ft-col h4{font-size:15px;color:var(--text-bright);margin-bottom:18px}
.ft-col li{margin-bottom:10px}
.ft-col a{font-size:13px;color:var(--text-dim)}
.ft-col a:hover{color:var(--neon-cyan)}
.ft-qr h4{font-size:15px;color:var(--text-bright);margin-bottom:18px}
.qr-row{display:flex;gap:18px}
.qr-box{text-align:center}
.qr-canvas{
    width:96px;height:96px;
    background:#fff;padding:4px;
    border-radius:6px;margin-bottom:8px;
}
.qr-box span{font-size:11px;color:var(--text-dim)}
.ft-bottom{
    text-align:center;padding-top:28px;
    border-top:1px solid var(--border-glow);
    font-size:13px;color:var(--text-dim);
}
.ft-bottom a{color:var(--neon-purple)}

/* ── MCP badge ── */
.mcp-badge{
    margin-top:14px;padding:10px 14px;
    background:rgba(155,89,182,.1);
    border-left:2px solid var(--neon-purple);
    font-size:12px;color:var(--text-dim);border-radius:0 6px 6px 0;
}

/* ── Share Buttons ── */
.share-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.share-btn{
    padding:7px 16px;border-radius:20px;
    font-size:13px;font-weight:700;cursor:pointer;
    border:1.5px solid var(--border-glow);
    color:var(--text-dim);background:transparent;
    transition:all .25s;
}
.share-btn:hover{border-color:var(--neon-purple);color:var(--neon-purple)}

/* ── Responsive ── */
@media(max-width:1024px){
    .g3,.g4{grid-template-columns:repeat(2,1fr)}
    .ft-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
    .g2,.g3,.g4{grid-template-columns:1fr}
    .hd-inner{flex-direction:column;height:auto;padding:14px 0;gap:12px}
    .main-nav{flex-wrap:wrap;justify-content:center;gap:14px}
    .ft-grid{grid-template-columns:1fr}
    .stats-bar{gap:24px}
    .sec{padding:52px 0}
}