/* 51视频 原创主题 CSS | qmgwmwf.cn */
:root{
  --c-ink:#0E1A2B;
  --c-ink-2:#1B2A45;
  --c-pink:#FF5A7A;
  --c-mint:#5FE0C6;
  --c-gold:#FFD166;
  --c-bg:#F6F8FC;
  --c-line:#E6ECF4;
  --c-mute:#6B7A90;
  --radius:14px;
  --shadow:0 8px 24px rgba(14,26,43,.08);
  --shadow-lg:0 18px 48px rgba(14,26,43,.14);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color:var(--c-ink);
  background:var(--c-bg);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-ink);text-decoration:none;transition:color .2s}
a:hover{color:var(--c-pink)}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* Header */
.sy-top{background:linear-gradient(180deg,#0E1A2B 0%,#1B2A45 100%);color:#fff;position:sticky;top:0;z-index:50}
.sy-top a{color:#fff}
.sy-head{display:flex;align-items:center;justify-content:space-between;padding:14px 0;gap:20px;flex-wrap:wrap}
.sy-brand{display:flex;align-items:center;gap:12px}
.sy-brand img{width:46px;height:46px;border-radius:12px}
.sy-brand .sy-name{font-size:22px;font-weight:800;letter-spacing:1px}
.sy-brand .sy-sub{font-size:12px;color:#9fb0c9;margin-top:2px}
.sy-nav ul{list-style:none;display:flex;gap:6px;margin:0;padding:0;flex-wrap:wrap}
.sy-nav a{padding:8px 14px;border-radius:999px;font-weight:500;font-size:15px}
.sy-nav a:hover,.sy-nav a.active{background:rgba(95,224,198,.18);color:var(--c-mint)}
.sy-search{background:#fff;border-radius:999px;display:flex;align-items:center;padding:6px;box-shadow:var(--shadow);max-width:720px;margin:0 auto 18px}
.sy-search input{flex:1;border:0;outline:0;padding:10px 14px;font-size:15px;background:transparent;color:var(--c-ink)}
.sy-search button{background:linear-gradient(135deg,var(--c-pink),#ff8fa3);color:#fff;border:0;padding:10px 22px;border-radius:999px;font-weight:600;cursor:pointer}
.sy-search-wrap{padding:0 0 14px}

/* Hero */
.sy-hero{position:relative;overflow:hidden;border-radius:22px;margin:24px 0 36px;background:#0E1A2B;color:#fff;min-height:360px;box-shadow:var(--shadow-lg)}
.sy-hero::before{content:"";position:absolute;inset:0;background:url('/assets/img/hero.jpg') center/cover no-repeat;opacity:.75}
.sy-hero .sy-hero-inner{position:relative;padding:64px 42px;max-width:720px}
.sy-hero h1{font-size:38px;line-height:1.25;margin:0 0 14px;text-shadow:0 2px 18px rgba(0,0,0,.35)}
.sy-hero h1 em{font-style:normal;color:var(--c-mint)}
.sy-hero p{font-size:17px;color:#e6eefc;margin:0 0 22px;max-width:580px}
.sy-hero .sy-btns a{display:inline-block;padding:12px 22px;border-radius:999px;font-weight:600;margin-right:10px;margin-bottom:10px}
.sy-btn-pri{background:var(--c-pink);color:#fff!important}
.sy-btn-pri:hover{background:#ff4770;color:#fff!important}
.sy-btn-sec{background:rgba(255,255,255,.14);color:#fff!important;backdrop-filter:blur(6px)}
.sy-btn-sec:hover{background:rgba(255,255,255,.28);color:#fff!important}

/* Crumbs */
.sy-crumbs{font-size:13px;color:var(--c-mute);padding:16px 0}
.sy-crumbs a{color:var(--c-mute)}
.sy-crumbs a:hover{color:var(--c-pink)}
.sy-crumbs span{margin:0 6px}

/* Section */
.sy-sec{padding:28px 0 10px}
.sy-sec-h{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:18px;gap:12px;flex-wrap:wrap}
.sy-sec-h h2{font-size:26px;margin:0;letter-spacing:.5px}
.sy-sec-h h2::before{content:"";display:inline-block;width:8px;height:22px;background:linear-gradient(180deg,var(--c-pink),var(--c-mint));border-radius:4px;margin-right:10px;vertical-align:-4px}
.sy-sec-h p{margin:0;color:var(--c-mute);font-size:14px}
.sy-sec-h a.more{color:var(--c-pink);font-weight:600;font-size:14px}

/* Grid cards */
.sy-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.sy-grid.cols-3{grid-template-columns:repeat(3,1fr)}
.sy-grid.cols-2{grid-template-columns:repeat(2,1fr)}
@media (max-width:960px){
  .sy-grid,.sy-grid.cols-3{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:560px){
  .sy-grid,.sy-grid.cols-3,.sy-grid.cols-2{grid-template-columns:1fr}
}
.sy-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.sy-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.sy-thumb{position:relative;aspect-ratio:4/3;overflow:hidden;background:#0E1A2B}
.sy-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.sy-card:hover .sy-thumb img{transform:scale(1.05)}
.sy-play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .25s;background:linear-gradient(180deg,rgba(14,26,43,0) 40%,rgba(14,26,43,.6) 100%)}
.sy-card:hover .sy-play{opacity:1}
.sy-play-btn{width:60px;height:60px;border-radius:50%;background:rgba(255,255,255,.92);display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(0,0,0,.3)}
.sy-play-btn::before{content:"";width:0;height:0;border-left:16px solid var(--c-pink);border-top:11px solid transparent;border-bottom:11px solid transparent;margin-left:4px}
.sy-tag{position:absolute;top:10px;left:10px;background:rgba(14,26,43,.7);color:#fff;padding:4px 10px;border-radius:999px;font-size:12px;letter-spacing:.5px}
.sy-dur{position:absolute;bottom:10px;right:10px;background:rgba(14,26,43,.8);color:#fff;padding:3px 8px;border-radius:6px;font-size:12px;font-variant-numeric:tabular-nums}
.sy-info{padding:14px 16px 16px}
.sy-info h3{font-size:16px;margin:0 0 6px;line-height:1.45}
.sy-info p{margin:0 0 10px;color:var(--c-mute);font-size:13px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sy-meta{display:flex;justify-content:space-between;color:var(--c-mute);font-size:12px;border-top:1px dashed var(--c-line);padding-top:8px}

/* Feature band */
.sy-band{background:linear-gradient(135deg,#fff 0%,#eef4ff 100%);border-radius:20px;padding:28px;box-shadow:var(--shadow);margin:16px 0 36px}
.sy-band-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:860px){.sy-band-grid{grid-template-columns:1fr}}
.sy-feat h4{margin:0 0 8px;font-size:17px;color:var(--c-ink)}
.sy-feat h4::before{content:"";display:inline-block;width:8px;height:8px;border-radius:3px;background:var(--c-pink);margin-right:8px;vertical-align:2px}
.sy-feat:nth-child(2) h4::before{background:var(--c-mint)}
.sy-feat:nth-child(3) h4::before{background:var(--c-gold)}
.sy-feat p{margin:0;color:var(--c-mute);font-size:14px;line-height:1.7}

/* Expert */
.sy-exp{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media (max-width:960px){.sy-exp{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.sy-exp{grid-template-columns:1fr}}
.sy-exp-card{background:#fff;border-radius:var(--radius);padding:18px;text-align:center;box-shadow:var(--shadow)}
.sy-exp-card img{width:92px;height:92px;border-radius:50%;margin:0 auto 10px;object-fit:cover;border:3px solid #fff;box-shadow:0 4px 14px rgba(14,26,43,.18)}
.sy-exp-card h4{margin:0 0 4px;font-size:17px}
.sy-exp-card .sy-role{color:var(--c-pink);font-size:13px;margin-bottom:8px}
.sy-exp-card .sy-bio{color:var(--c-mute);font-size:13px;line-height:1.65;min-height:70px}
.sy-exp-card .sy-btns2{margin-top:10px;display:flex;gap:8px;justify-content:center}
.sy-exp-card .sy-btns2 a{font-size:12px;padding:6px 12px;border-radius:999px;background:var(--c-bg);color:var(--c-ink)}
.sy-exp-card .sy-btns2 a:hover{background:var(--c-pink);color:#fff}

/* Partners */
.sy-logos{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;padding:18px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow)}
@media (max-width:760px){.sy-logos{grid-template-columns:repeat(3,1fr)}}
.sy-logo-cell{aspect-ratio:3/2;display:flex;align-items:center;justify-content:center;background:var(--c-bg);border-radius:10px;color:var(--c-ink);font-weight:700;letter-spacing:2px;font-size:15px;border:1px dashed var(--c-line)}

/* How to */
.sy-how{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:10px}
@media (max-width:860px){.sy-how{grid-template-columns:repeat(2,1fr)}}
@media (max-width:480px){.sy-how{grid-template-columns:1fr}}
.sy-step{background:#fff;border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);position:relative}
.sy-step b{display:inline-block;width:34px;height:34px;background:linear-gradient(135deg,var(--c-pink),var(--c-mint));color:#fff;border-radius:50%;text-align:center;line-height:34px;font-size:16px;margin-bottom:8px}
.sy-step h4{margin:0 0 6px;font-size:16px}
.sy-step p{margin:0;color:var(--c-mute);font-size:13px;line-height:1.7}

/* FAQ */
.sy-faq{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.sy-faq details{border-bottom:1px solid var(--c-line)}
.sy-faq details:last-child{border-bottom:0}
.sy-faq summary{cursor:pointer;padding:16px 20px;font-weight:600;font-size:15px;list-style:none;position:relative;padding-right:46px}
.sy-faq summary::-webkit-details-marker{display:none}
.sy-faq summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:22px;color:var(--c-pink)}
.sy-faq details[open] summary::after{content:"–"}
.sy-faq .sy-ans{padding:0 20px 16px;color:var(--c-mute);font-size:14px;line-height:1.75}

/* Reviews */
.sy-rev{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media (max-width:960px){.sy-rev{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.sy-rev{grid-template-columns:1fr}}
.sy-rev-card{background:#fff;padding:18px;border-radius:var(--radius);box-shadow:var(--shadow);position:relative}
.sy-rev-card::before{content:"\201C";position:absolute;top:0;right:16px;font-size:56px;color:var(--c-pink);opacity:.18;line-height:1}
.sy-rev-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.sy-rev-head .sy-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--c-pink),var(--c-mint));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.sy-rev-head .sy-who{font-size:14px;font-weight:600}
.sy-rev-head .sy-who small{display:block;color:var(--c-mute);font-weight:400;font-size:12px}
.sy-stars{color:var(--c-gold);letter-spacing:2px;font-size:13px;margin-bottom:6px}
.sy-rev-card p{margin:0;color:var(--c-ink);font-size:13.5px;line-height:1.75}

/* Contact */
.sy-contact{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}
@media (max-width:860px){.sy-contact{grid-template-columns:1fr}}
.sy-contact-box{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}
.sy-contact-box h3{margin:0 0 10px;font-size:18px}
.sy-contact-box p{margin:6px 0;font-size:14px;color:var(--c-ink)}
.sy-contact-box p b{color:var(--c-pink)}
.sy-store img{border-radius:12px;margin-bottom:12px}
.sy-qrs{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:10px}
.sy-qrs .sy-qr{background:var(--c-bg);border-radius:12px;padding:10px;text-align:center}
.sy-qrs .sy-qr img{margin:0 auto;width:120px;height:120px;border-radius:8px;object-fit:cover}
.sy-qrs .sy-qr span{display:block;margin-top:6px;font-size:12px;color:var(--c-mute)}

/* Share */
.sy-share{display:flex;align-items:center;gap:8px;flex-wrap:wrap;background:#fff;border-radius:var(--radius);padding:14px 18px;box-shadow:var(--shadow);margin-top:14px}
.sy-share b{margin-right:6px}
.sy-share a{padding:6px 12px;border-radius:999px;background:var(--c-bg);font-size:13px}
.sy-share a:hover{background:var(--c-pink);color:#fff!important}

/* Footer */
.sy-foot{background:#0E1A2B;color:#c7d3e6;margin-top:48px;padding:36px 0 20px}
.sy-foot a{color:#c7d3e6}
.sy-foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:24px}
@media (max-width:860px){.sy-foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.sy-foot-grid{grid-template-columns:1fr}}
.sy-foot h5{margin:0 0 10px;color:#fff;font-size:15px;letter-spacing:1px}
.sy-foot ul{list-style:none;padding:0;margin:0}
.sy-foot ul li{margin:4px 0;font-size:13px}
.sy-foot .sy-foot-brand p{font-size:13px;line-height:1.8}
.sy-foot .sy-foot-qrs{display:flex;gap:12px}
.sy-foot .sy-foot-qrs div{text-align:center;font-size:12px;color:#9fb0c9}
.sy-foot .sy-foot-qrs img{width:96px;height:96px;border-radius:8px;margin-bottom:4px}
.sy-foot-bot{border-top:1px solid #1B2A45;margin-top:22px;padding-top:14px;text-align:center;font-size:12px;color:#9fb0c9}
.sy-foot-bot span{color:var(--c-mint)}

/* Article list (inner pages) */
.sy-art-list .sy-card .sy-thumb{aspect-ratio:16/9}
.sy-sub-intro{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);margin:10px 0 26px}
.sy-sub-intro h1{margin:0 0 10px;font-size:28px}
.sy-sub-intro p{margin:0;color:var(--c-mute)}
.sy-tag-row{margin-top:10px}
.sy-tag-row span{display:inline-block;background:var(--c-bg);color:var(--c-ink);padding:4px 12px;border-radius:999px;font-size:12px;margin:4px 6px 0 0}

/* Toast */
.sy-toast{position:fixed;left:50%;bottom:40px;transform:translateX(-50%);background:rgba(14,26,43,.92);color:#fff;padding:12px 22px;border-radius:999px;font-size:14px;z-index:99;opacity:0;transition:opacity .25s,bottom .25s;pointer-events:none}
.sy-toast.show{opacity:1;bottom:60px}

/* 更新徽章 */
.sy-update-badge{display:inline-block;background:rgba(95,224,198,.14);color:var(--c-mint);border:1px solid rgba(95,224,198,.35);padding:6px 14px;border-radius:999px;font-size:12px;margin:0 auto 14px;display:block;max-width:max-content;text-align:center}

/* 社区六大功能网格 */
.sy-fn{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media (max-width:860px){.sy-fn{grid-template-columns:repeat(2,1fr)}}
@media (max-width:480px){.sy-fn{grid-template-columns:1fr}}
.sy-fn-card{background:#fff;border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);border-top:4px solid var(--c-pink);transition:transform .25s}
.sy-fn-card:hover{transform:translateY(-4px)}
.sy-fn-card:nth-child(2){border-top-color:var(--c-mint)}
.sy-fn-card:nth-child(3){border-top-color:var(--c-gold)}
.sy-fn-card:nth-child(4){border-top-color:#7C5CFF}
.sy-fn-card:nth-child(5){border-top-color:#FF8F3A}
.sy-fn-card:nth-child(6){border-top-color:#36B0FF}
.sy-fn-ic{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--c-pink),var(--c-mint));color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;margin-bottom:10px}
.sy-fn-card h4{margin:0 0 6px;font-size:17px}
.sy-fn-card p{margin:0 0 10px;font-size:13.5px;color:var(--c-mute);line-height:1.7}
.sy-fn-card .sy-fn-kv{display:flex;gap:12px;font-size:12px;color:var(--c-ink)}
.sy-fn-card .sy-fn-kv span b{color:var(--c-pink)}

/* 专家扩展 */
.sy-exp-card .sy-qual{font-size:12px;color:var(--c-mute);background:var(--c-bg);border-radius:8px;padding:6px 10px;margin:8px 0;line-height:1.6;text-align:left}
.sy-exp-card .sy-qual b{color:var(--c-ink)}
.sy-exp-card .sy-awards{font-size:12px;color:var(--c-pink);margin:4px 0 8px}
.sy-exp-card .sy-social{display:flex;gap:6px;justify-content:center;margin-top:6px;flex-wrap:wrap}
.sy-exp-card .sy-social a{font-size:11px;padding:3px 10px;border-radius:999px;background:#eef4ff;color:var(--c-ink)}
.sy-exp-card .sy-social a:hover{background:var(--c-pink);color:#fff}

/* 合作Logo条（带图像） */
.sy-logos.sy-logos-img .sy-logo-cell{padding:10px;background:#fff}
.sy-logos.sy-logos-img .sy-logo-cell img{max-width:92%;max-height:64px;object-fit:contain;filter:saturate(.92)}

/* MCP 前端信息块 */
.sy-mcp-block{background:linear-gradient(135deg,#0E1A2B 0%,#1B2A45 100%);color:#dfe8f7;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-lg);display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media (max-width:760px){.sy-mcp-block{grid-template-columns:1fr}}
.sy-mcp-block h3{margin:0 0 8px;color:#fff;font-size:18px}
.sy-mcp-block h3 em{font-style:normal;color:var(--c-mint)}
.sy-mcp-block p{margin:4px 0;font-size:13.5px;line-height:1.7;color:#b9c7de}
.sy-mcp-block code{background:rgba(255,255,255,.06);color:var(--c-mint);padding:2px 8px;border-radius:6px;font-size:12.5px}
.sy-mcp-block .sy-mcp-ep{margin-top:10px;background:rgba(0,0,0,.25);padding:10px 14px;border-radius:10px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;overflow:auto}

/* 合规/时效区 */
.sy-meta-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:6px 0 22px}
@media (max-width:760px){.sy-meta-row{grid-template-columns:repeat(2,1fr)}}
.sy-meta-tile{background:#fff;border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow)}
.sy-meta-tile small{color:var(--c-mute);font-size:12px;display:block;margin-bottom:4px}
.sy-meta-tile b{font-size:15px;color:var(--c-ink)}

/* 底部备案条 */
.sy-foot-icp{display:flex;justify-content:center;align-items:center;gap:14px;flex-wrap:wrap;padding-top:10px;font-size:12px;color:#9fb0c9}
.sy-foot-icp a{color:#9fb0c9}
.sy-foot-icp a:hover{color:var(--c-mint)}