/* AI 姿势参考库 · 中文镜像 */
:root{
  --bg:#0d0f12; --bg2:#14171c; --panel:#1a1e24; --line:#272c34; --line2:#343a44;
  --tx:#e9ecf1; --tx2:#a3abb8; --tx3:#6c7482; --ac:#8fb4ff; --ac2:#c3d5ff;
  --warn:#ffb86b; --danger:#ff6b7a;
  --r:14px; --sh:0 10px 30px rgba(0,0,0,.45);
  --f:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Noto Sans CJK SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--bg);color:var(--tx);font-family:var(--f);-webkit-font-smoothing:antialiased}
body{min-height:100vh;background:radial-gradient(1200px 500px at 15% -10%,#1b2433 0,transparent 60%),radial-gradient(900px 400px at 100% 0,#211a2b 0,transparent 55%),var(--bg)}
button,select,input{font:inherit;color:inherit}
a{color:var(--ac)}
kbd{background:var(--panel);border:1px solid var(--line2);border-bottom-width:2px;border-radius:5px;padding:1px 6px;font-size:11px;font-family:inherit}
.hidden{display:none!important}

/* ---- 18+ 门槛 ---- */
.age-gate{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;background:rgba(5,7,10,.82);backdrop-filter:blur(8px)}
.age-card{background:var(--bg2);border:1px solid var(--line2);border-radius:20px;padding:40px 44px;max-width:440px;text-align:center;box-shadow:var(--sh)}
.age-mark{display:inline-flex;align-items:center;justify-content:center;width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,var(--danger),#ff9f5a);font-size:22px;font-weight:800;color:#fff;margin-bottom:16px}
.age-card h1{font-size:22px;margin-bottom:12px}
.age-card p{color:var(--tx2);font-size:14px;line-height:1.7;margin-bottom:10px}
.age-card .age-note{color:var(--warn);font-size:13px}
.age-card button{display:block;width:100%;margin-top:10px}

/* ---- 按钮 ---- */
.btn-primary,.btn-ghost{border:0;border-radius:10px;padding:12px 18px;font-size:14px;font-weight:600;cursor:pointer;transition:.18s}
.btn-primary{background:linear-gradient(135deg,var(--ac),#7c9fff);color:#0b1020}
.btn-primary:hover{filter:brightness(1.1)}
.btn-ghost{background:transparent;border:1px solid var(--line2);color:var(--tx2)}
.btn-ghost:hover{border-color:var(--ac);color:var(--ac)}

/* ---- 头部 ---- */
.hero{padding:36px clamp(16px,4vw,48px) 14px;max-width:1600px;margin:0 auto}
.eyebrow{font-size:12px;letter-spacing:.2em;color:var(--tx3);text-transform:uppercase}
.hero h1{margin:6px 0 6px;font-size:clamp(26px,3.6vw,40px);font-weight:800;letter-spacing:.02em}
.hero h1 span{background:linear-gradient(90deg,var(--ac2),#e3c8ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{color:var(--tx2);font-size:14px;max-width:760px;line-height:1.7}
.hero-top{display:flex;gap:26px;margin-top:18px}
.stat b{display:block;font-size:22px;color:var(--ac2)}
.stat span{font-size:12px;color:var(--tx3)}

/* ---- 体系页签 ---- */
.sys-tabs{display:flex;flex-wrap:wrap;gap:8px;max-width:1600px;margin:18px auto 0;padding:0 clamp(16px,4vw,48px)}
.sys-tab{background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:9px 16px;font-size:14px;color:var(--tx2);cursor:pointer;transition:.15s}
.sys-tab em{font-style:normal;color:var(--tx3);font-size:12px;margin-left:6px}
.sys-tab:hover{border-color:var(--line2);color:var(--tx)}
.sys-tab.active{background:linear-gradient(135deg,rgba(143,180,255,.16),rgba(227,200,255,.12));border-color:var(--ac);color:var(--ac2)}
.sys-tab.active em{color:var(--ac)}

/* ---- 工具栏 ---- */
.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;max-width:1600px;margin:16px auto 0;padding:0 clamp(16px,4vw,48px)}
.search-box{position:relative;flex:1 1 260px;min-width:220px}
.search-box svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--tx3)}
.search-box input{width:100%;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:10px 12px 10px 36px;font-size:14px;outline:none;transition:.15s}
.search-box input:focus{border-color:var(--ac)}
.toolbar select{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:13px;color:var(--tx2);cursor:pointer;outline:none}
.toolbar select:focus{border-color:var(--ac)}
.mode-toggle{display:flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.mode-toggle button{background:var(--panel);border:0;padding:10px 14px;font-size:13px;color:var(--tx3);cursor:pointer}
.mode-toggle button.active{background:var(--bg2);color:var(--ac2)}
.btn-reset{background:transparent;border:1px solid var(--line);border-radius:10px;padding:10px 14px;font-size:13px;color:var(--tx3);cursor:pointer}
.btn-reset:hover{color:var(--ac);border-color:var(--ac)}

/* ---- 画廊 ---- */
.gallery{max-width:1600px;margin:20px auto 40px;padding:0 clamp(16px,4vw,48px);display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px}
.g-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;cursor:pointer;transition:transform .18s,border-color .18s,box-shadow .18s}
.g-card:hover{transform:translateY(-3px);border-color:var(--line2);box-shadow:var(--sh)}
.g-card .thumbs{display:grid;grid-template-columns:repeat(5,1fr);gap:2px;aspect-ratio:1.5;background:var(--bg2)}
.g-card .thumbs img{width:100%;height:100%;object-fit:cover;opacity:.92;transition:opacity .15s}
.g-card .thumbs img:hover{opacity:1}
.g-card .thumbs.many{grid-template-columns:repeat(3,1fr)}
.g-card .card-info{padding:10px 12px 12px}
.g-card .card-name{font-size:13.5px;font-weight:600;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:38px}
.g-card .card-meta{display:flex;justify-content:space-between;align-items:center;margin-top:6px;font-size:11.5px;color:var(--tx3)}
.g-card .card-meta .tag{background:rgba(143,180,255,.1);border:1px solid rgba(143,180,255,.25);color:var(--ac2);border-radius:6px;padding:2px 7px}
.g-card .angles{font-size:11px;color:var(--tx3)}

/* 单张模式 */
.g-card.single .thumbs{display:block;aspect-ratio:3/4}
.g-card.single .thumbs img{height:100%}

.empty{max-width:1600px;margin:60px auto;text-align:center;color:var(--tx3);font-size:15px}

/* ---- 页脚 ---- */
.foot{max-width:1600px;margin:0 auto;padding:26px clamp(16px,4vw,48px) 46px;border-top:1px solid var(--line);color:var(--tx3);font-size:13px;line-height:1.9}
.foot p{margin:2px 0}
.foot a{color:var(--ac2)}
.foot-key{margin-top:8px!important;font-size:12px}

/* ---- 灯箱 ---- */
.lightbox{position:fixed;inset:0;z-index:150}
.lb-backdrop{position:absolute;inset:0;background:rgba(5,7,10,.88);backdrop-filter:blur(6px)}
.lb-panel{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;padding:18px clamp(12px,3vw,36px)}
.lb-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;max-width:1400px;width:100%;margin:0 auto 12px}
.lb-head h2{font-size:17px}
.lb-meta{color:var(--tx3);font-size:12.5px;margin-top:4px}
.lb-x{background:var(--panel);border:1px solid var(--line2);border-radius:50%;width:38px;height:38px;color:var(--tx2);font-size:15px;cursor:pointer;flex:none}
.lb-x:hover{color:var(--tx);border-color:var(--ac)}
.lb-body{flex:1;display:flex;gap:22px;max-width:1400px;width:100%;margin:0 auto;min-height:0}
.lb-main{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;min-width:0}
.lb-main img{max-width:100%;max-height:calc(100vh - 190px);border-radius:12px;box-shadow:var(--sh);background:var(--bg2)}
.lb-caption{color:var(--tx3);font-size:12.5px;margin-top:10px;text-align:center}
.lb-side{width:210px;flex:none;display:flex;flex-direction:column;gap:10px;overflow-y:auto;padding-right:4px}
.lb-label{font-size:12px;color:var(--tx3)}
.lb-thumbs{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.lb-thumbs img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:8px;border:2px solid transparent;cursor:pointer;opacity:.85;transition:.15s}
.lb-thumbs img:hover{opacity:1}
.lb-thumbs img.active{border-color:var(--ac);opacity:1}
.lb-actions{display:flex;flex-direction:column;gap:8px;margin-top:4px}

@media (max-width:760px){
  .gallery{grid-template-columns:repeat(2,1fr);gap:10px}
  .lb-body{flex-direction:column;overflow-y:auto}
  .lb-side{width:100%;flex-direction:row;flex-wrap:wrap;align-items:center}
  .lb-thumbs{grid-template-columns:repeat(5,1fr)}
  .lb-actions{flex-direction:row}
  .lb-main img{max-height:52vh}
  .age-card{padding:28px 24px;margin:20px}
}

/* ---- 素材库更新 ---- */
.newdb{border-top:1px solid var(--line2);background:linear-gradient(180deg,transparent,rgba(143,180,255,.045))}
.newdb-inner{max-width:1200px;margin:0 auto;padding:44px clamp(16px,4vw,40px) 56px}
.newdb h2{font-size:22px;margin:8px 0 20px}
.newdb-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.newdb-card{background:var(--panel);border:1px solid var(--line2);border-radius:14px;padding:20px 18px;color:var(--tx);text-decoration:none;transition:.15s;display:flex;flex-direction:column;gap:8px}
.newdb-card:hover{border-color:var(--ac);transform:translateY(-2px)}
.newdb-card h3{font-size:16px;color:var(--ac)}
.newdb-card p{font-size:13px;color:var(--tx2);line-height:1.7;margin:0}
.newdb-card span{font-size:13px;color:var(--tx3);margin-top:auto}
.newdb-card:hover span{color:var(--ac)}
.newdb-note{font-size:12.5px;color:var(--tx3);margin-top:16px;line-height:1.7}
@media (max-width:900px){.newdb-cards{grid-template-columns:1fr}}

/* 三频道导航 */
.channels{display:flex;justify-content:center;gap:6px;padding:10px 12px;background:var(--bg2);border-bottom:1px solid var(--line2);position:sticky;top:0;z-index:30;flex-wrap:wrap}
.channels a{padding:7px 22px;border-radius:999px;border:1px solid var(--line2);color:var(--tx2);font-size:14px;font-weight:500;transition:.15s}
.channels a:hover{color:var(--tx);border-color:var(--ac)}
.channels a.on{background:var(--ac);border-color:var(--ac);color:#0d0f12;font-weight:700}