/* ============================================================
   轻品社官网共享设计系统（深蓝黑底+青蓝渐变科技感）
   适用：index / features / pricing / agent / cases / news / geo / download
   ============================================================ */
:root{
  --bg:#060B18;--bg2:#0A1428;--card:#0D1B33;--card2:#10203D;
  --line:rgba(56,189,248,.15);--line2:rgba(56,189,248,.32);
  --cyan:#22D3EE;--blue:#3B82F6;--light:#7DD3FC;
  --grad:linear-gradient(135deg,#22D3EE 0%,#3B82F6 100%);
  --txt:#E9F1FC;--sub:#9AACC9;--dim:#6B7A94;
  --radius:16px;
}
*{margin:0;padding:0;box-sizing:border-box;font-family:system-ui,-apple-system,'PingFang SC','Microsoft YaHei',sans-serif}
html{scroll-behavior:smooth}
body{color:var(--txt);background:var(--bg);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:1160px;margin:0 auto;padding:0 26px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

/* ---------- 顶栏 ---------- */
header.site{position:sticky;top:0;z-index:99;background:rgba(6,11,24,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:box-shadow .3s}
header.site.scrolled{box-shadow:0 8px 30px rgba(2,8,23,.55)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px;gap:18px}
.logo{font-size:22px;font-weight:800;color:#fff;letter-spacing:.5px;white-space:nowrap}
.logo b{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{color:var(--sub);font-size:15.5px;transition:color .2s;white-space:nowrap}
.nav-links a:hover,.nav-links a.on{color:#fff}
.nav-cta{display:flex;gap:12px;align-items:center;white-space:nowrap}
.login-link{color:var(--sub);font-size:15.5px;padding:9px 4px;transition:color .2s}
.login-link:hover{color:#fff}
.nav-toggle{display:none;background:none;border:1px solid var(--line2);border-radius:8px;color:var(--light);font-size:20px;width:42px;height:38px;cursor:pointer;line-height:1}

/* ---------- 按钮 ---------- */
.btn{display:inline-block;background:var(--grad);color:#fff;padding:11px 28px;border-radius:10px;font-size:16px;font-weight:600;border:none;cursor:pointer;transition:.22s;box-shadow:0 4px 18px rgba(34,211,238,.22);text-align:center}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 26px rgba(34,211,238,.34)}
.btn.ghost{background:transparent;color:var(--light);border:1px solid var(--line2);box-shadow:none}
.btn.ghost:hover{border-color:var(--cyan);color:#fff}
.btn.lg{font-size:17px;padding:14px 40px}
.btn.sm{font-size:14px;padding:8px 18px}

/* ---------- 通用区块 ---------- */
section.block{padding:84px 0}
.alt{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{text-align:center;margin-bottom:52px}
.sec-head h2{font-size:33px;font-weight:800;letter-spacing:.5px}
.sec-head p{color:var(--sub);font-size:17px;margin-top:12px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;transition:.25s}
.card:hover{border-color:var(--line2);transform:translateY(-4px);box-shadow:0 16px 40px rgba(2,8,23,.6)}
.card .ico{width:48px;height:48px;border-radius:12px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:18px}
.card h3{font-size:19px;margin-bottom:10px;color:#fff}
.card p{color:var(--sub);font-size:15px;line-height:1.8}
.card .more{display:inline-block;margin-top:12px;font-size:14px;color:var(--cyan)}
.pill{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line2);border-radius:999px;padding:7px 18px;font-size:14px;color:var(--light);background:rgba(34,211,238,.06)}
.pill i{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan)}

/* ---------- 筛选按钮 ---------- */
.fbtn{background:var(--card);border:1px solid var(--line);color:var(--sub);border-radius:999px;padding:9px 22px;font-size:15px;cursor:pointer;transition:.2s}
.fbtn:hover{color:#fff;border-color:var(--line2)}
.fbtn.on{background:var(--grad);color:#fff;border-color:transparent}

/* ---------- 内页 Hero ---------- */
.page-hero{position:relative;overflow:hidden;text-align:center;padding:84px 0 68px;background:radial-gradient(760px 320px at 20% 10%,rgba(34,211,238,.12),transparent 60%),radial-gradient(640px 300px at 80% 85%,rgba(59,130,246,.14),transparent 60%)}
.page-hero h1{font-size:clamp(30px,4vw,44px);font-weight:800;line-height:1.3}
.page-hero .sub{font-size:18px;color:var(--sub);max-width:840px;margin:18px auto 0}
.page-hero .sub b{color:var(--light);font-weight:600}

/* ---------- 面包屑 ---------- */
.crumb{font-size:14px;color:var(--dim);padding:20px 0 0}
.crumb a{color:var(--sub)}.crumb a:hover{color:#fff}

/* ---------- 表格 ---------- */
.tbl{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.tbl th{background:rgba(34,211,238,.08);color:#fff;font-size:15px;padding:16px 18px;text-align:left;border-bottom:1px solid var(--line2);white-space:nowrap}
.tbl td{padding:15px 18px;color:var(--sub);font-size:15px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl tr:last-child td{border-bottom:none}
.tbl td b{color:#fff}
.tbl .hi{color:var(--cyan);font-weight:700}

/* ---------- FAQ ---------- */
.faq{max-width:800px;margin:0 auto}
.faq details{border:1px solid var(--line);border-radius:14px;padding:20px 24px;margin-bottom:14px;background:var(--card);transition:.2s}
.faq details[open]{border-color:var(--line2)}
.faq summary{font-weight:600;cursor:pointer;font-size:16.5px;color:#fff;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';font-size:22px;color:var(--cyan);font-weight:400;flex-shrink:0}
.faq details[open] summary::after{content:'−'}
.faq .ans{color:var(--sub);font-size:15px;margin-top:12px;line-height:1.85}
.faq .ans a{color:var(--cyan)}

/* ---------- CTA ---------- */
.cta{position:relative;overflow:hidden;text-align:center;padding:72px 26px;border-radius:22px;border:1px solid var(--line2);background:radial-gradient(520px 240px at 50% 0%,rgba(34,211,238,.14),transparent 70%),var(--card)}
.cta h2{font-size:30px;font-weight:800}
.cta p{color:var(--sub);margin:14px 0 30px;font-size:17px}

/* ---------- Footer ---------- */
footer.site{background:#040814;border-top:1px solid var(--line);padding:52px 0 30px;font-size:14.5px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;margin-bottom:30px}
.foot-grid b{display:block;color:#CBD8EE;font-size:15px;margin-bottom:14px}
.foot-grid a{display:block;color:var(--sub);padding:5px 0;transition:color .2s}
.foot-grid a:hover{color:#fff}
.foot-grid p{color:var(--sub);line-height:1.8;margin-top:12px}
.foot-bar{border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:var(--dim);font-size:13.5px}
.foot-bar a{color:var(--sub)}.foot-bar a:hover{color:#fff}

/* ---------- 滚动渐显 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- 小元悬浮客服 ---------- */
.xy-fab{position:fixed;right:22px;bottom:22px;z-index:120;width:62px;height:62px;border-radius:50%;border:2px solid rgba(34,211,238,.55);cursor:pointer;padding:2px;background:var(--card);box-shadow:0 6px 24px rgba(2,8,23,.6);animation:xyBreath 3.2s ease-in-out infinite;transition:transform .2s}
.xy-fab:hover{transform:scale(1.07)}
.xy-fab img{width:100%;height:100%;border-radius:50%;object-fit:cover;object-position:top}
.xy-fab .dot{position:absolute;top:2px;right:2px;width:13px;height:13px;border-radius:50%;background:#34D399;border:2px solid var(--bg)}
@keyframes xyBreath{0%,100%{box-shadow:0 6px 24px rgba(2,8,23,.6),0 0 0 0 rgba(34,211,238,.35)}50%{box-shadow:0 6px 24px rgba(2,8,23,.6),0 0 0 12px rgba(34,211,238,0)}}
.xy-panel{position:fixed;right:22px;bottom:96px;z-index:121;width:352px;max-width:calc(100vw - 32px);background:var(--card2);border:1px solid var(--line2);border-radius:18px;box-shadow:0 24px 70px rgba(2,8,23,.75);display:none;flex-direction:column;overflow:hidden}
.xy-panel.open{display:flex;animation:xyUp .28s ease}
@keyframes xyUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.xy-head{display:flex;align-items:center;gap:12px;padding:14px 16px;background:linear-gradient(135deg,rgba(34,211,238,.12),rgba(59,130,246,.10));border-bottom:1px solid var(--line)}
.xy-head img{width:40px;height:40px;border-radius:50%;object-fit:cover;object-position:top;border:1px solid var(--line2)}
.xy-head .nm{font-size:15.5px;font-weight:700;color:#fff}
.xy-head .st{font-size:12px;color:#34D399;display:flex;align-items:center;gap:5px}
.xy-head .st::before{content:'';width:7px;height:7px;border-radius:50%;background:#34D399}
.xy-close{margin-left:auto;background:none;border:none;color:var(--dim);font-size:20px;cursor:pointer;line-height:1;padding:4px}
.xy-close:hover{color:#fff}
.xy-body{height:320px;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px}
.xy-body::-webkit-scrollbar{width:5px}
.xy-body::-webkit-scrollbar-thumb{background:var(--line2);border-radius:3px}
.xy-msg{max-width:86%;padding:11px 14px;border-radius:13px;font-size:14px;line-height:1.7;white-space:pre-line}
.xy-msg.ai{background:rgba(34,211,238,.08);color:#D7E4F6;border:1px solid var(--line);border-radius:13px 13px 13px 3px;align-self:flex-start}
.xy-msg.user{background:var(--grad);color:#fff;border-radius:13px 13px 3px 13px;align-self:flex-end}
.xy-typing{display:inline-flex;gap:4px;padding:12px 16px;align-self:flex-start}
.xy-typing span{width:6px;height:6px;border-radius:50%;background:var(--cyan);animation:xyDot 1.2s infinite}
.xy-typing span:nth-child(2){animation-delay:.18s}
.xy-typing span:nth-child(3){animation-delay:.36s}
@keyframes xyDot{0%,60%,100%{opacity:.25;transform:none}30%{opacity:1;transform:translateY(-4px)}}
.xy-chips{display:flex;flex-wrap:wrap;gap:8px;padding:0 16px 12px}
.xy-chip{border:1px solid var(--line2);background:rgba(34,211,238,.05);color:var(--light);font-size:13px;border-radius:999px;padding:7px 14px;cursor:pointer;transition:.2s}
.xy-chip:hover{border-color:var(--cyan);color:#fff}
.xy-input{display:flex;gap:10px;padding:12px 14px;border-top:1px solid var(--line)}
.xy-input input{flex:1;background:var(--bg);border:1px solid var(--line);border-radius:10px;color:var(--txt);font-size:14px;padding:10px 14px;outline:none}
.xy-input input:focus{border-color:var(--cyan)}
.xy-input button{background:var(--grad);border:none;color:#fff;border-radius:10px;padding:0 18px;font-size:14px;font-weight:600;cursor:pointer}
.xy-cta{display:block;margin:0 14px 14px;text-align:center;background:var(--grad);color:#fff;font-size:14.5px;font-weight:600;border-radius:10px;padding:11px}

/* ---------- 响应式 ---------- */
@media (max-width:1000px){
  .grid3{grid-template-columns:repeat(2,1fr)}
  .grid4{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .nav-toggle{display:block}
  .nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:rgba(6,11,24,.98);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:14px 26px 20px;gap:4px}
  .nav-links.open{display:flex}
  .nav-links a{padding:11px 4px;font-size:16px;border-bottom:1px dashed rgba(148,166,198,.12)}
  .login-link{display:none}
  section.block{padding:64px 0}
  .sec-head h2{font-size:27px}
  .grid3,.grid2,.grid4{grid-template-columns:1fr}
  .xy-panel{right:16px}
  .xy-fab{right:16px;bottom:16px;width:56px;height:56px}
}

/* P5-05 官网模板区：真实截图卡（.tplv）+ 计数说明（.tpl-note） */
.tpl-note{text-align:center;color:rgba(148,163,184,.85);font-size:13.5px;margin:-6px 0 22px}
.tpl-note b{color:#22D3EE;font-weight:700}
.tpl-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.tplv{display:block;border:1px solid rgba(56,72,107,.55);border-radius:14px;overflow:hidden;background:rgba(13,20,38,.6);
  text-decoration:none;transition:transform .22s,border-color .22s,box-shadow .22s}
.tplv:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.55);box-shadow:0 14px 34px rgba(2,8,23,.55)}
.tplv .tv-shot{position:relative;height:158px;background:#0B1226;overflow:hidden}
.tplv .tv-shot img{width:100%;height:100%;object-fit:cover;object-position:top;display:block}
.tplv .tv-shot.noimg::after{content:'模板渲染中';position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:rgba(148,163,184,.7);font-size:13px}
.tplv .tv-tag{position:absolute;top:10px;left:10px;font-size:11.5px;font-weight:600;color:#fff;
  padding:3px 10px;border-radius:999px;background:rgba(34,211,238,.22);border:1px solid rgba(34,211,238,.4);backdrop-filter:blur(4px)}
.tplv .tv-body{padding:12px 14px 13px;display:flex;flex-direction:column;gap:3px}
.tplv .tv-body b{color:#F1F5F9;font-size:14.5px}
.tplv .tv-body span{color:rgba(148,163,184,.8);font-size:12.5px}
.tplv .tv-go{font-style:normal;color:#22D3EE;font-size:12.5px;margin-top:6px;opacity:0;transform:translateX(-4px);transition:all .2s}
.tplv:hover .tv-go{opacity:1;transform:translateX(0)}
@media (max-width:1060px){.tpl-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:760px){.tpl-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.tpl-grid{grid-template-columns:1fr}}