:root{
  --bg:#0a0a0a;
  --panel:#141414;
  --panel-2:#1b1b1b;
  --line:rgba(255,255,255,.12);
  --line-strong:rgba(255,255,255,.28);
  --txt:#f5f5f5;
  --muted:#9a9a9a;
  --muted-2:#6f6f6f;
  --white:#ffffff;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{margin:0;padding:0;}
body{
  background:var(--bg);
  color:var(--txt);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  line-height:1.7;
  position:relative;
  min-height:100vh;
}
/* 水墨晕染背景 */
.ink-bg{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(60vw 60vw at 12% -10%, rgba(255,255,255,.06), transparent 60%),
    radial-gradient(50vw 50vw at 100% 0%, rgba(255,255,255,.05), transparent 55%),
    radial-gradient(70vw 70vw at 50% 120%, rgba(255,255,255,.04), transparent 60%);
}
.site-header,.container,.site-footer{position:relative;z-index:1;}

/* Header */
.site-header{max-width:760px;margin:0 auto;padding:28px 20px 8px;text-align:center;}
.brand{display:flex;align-items:center;justify-content:center;gap:14px;}
.taiji{filter:drop-shadow(0 0 10px rgba(255,255,255,.18));}
.brand-text h1{margin:0;font-size:26px;letter-spacing:6px;font-weight:600;}
.brand-text p{margin:2px 0 0;font-size:12px;color:var(--muted);letter-spacing:2px;}
.tagline{margin:14px 0 0;font-size:13px;color:var(--muted-2);letter-spacing:1px;}

/* Container */
.container{max-width:760px;margin:0 auto;padding:12px 16px 40px;}
.panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:14px;
  padding:18px 16px;
  margin:14px 0;
}
.panel-title{
  display:flex;align-items:center;gap:10px;
  font-size:16px;font-weight:600;margin:0 0 14px;letter-spacing:1px;
}
.panel-title small{font-size:11px;color:var(--muted-2);font-weight:400;letter-spacing:0;}
.deco{width:5px;height:16px;background:var(--white);border-radius:2px;display:inline-block;}

/* Series */
.series-list{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.series-card{
  border:1px solid var(--line);border-radius:10px;padding:14px 12px;cursor:pointer;
  background:var(--panel-2);transition:.18s;
}
.series-card:active{transform:scale(.98);}
.series-card.active{border-color:var(--white);background:#222;box-shadow:0 0 0 1px var(--white) inset;}
.series-card h3{margin:0 0 4px;font-size:15px;letter-spacing:1px;}
.series-card p{margin:0;font-size:12px;color:var(--muted);line-height:1.5;}

/* Fields */
.field{
  width:100%;background:var(--panel-2);color:var(--txt);
  border:1px solid var(--line);border-radius:9px;padding:11px 12px;font-size:14px;
  appearance:none;outline:none;
}
.field:focus{border-color:var(--line-strong);}

/* Hot topics */
.hot-list{display:flex;flex-wrap:wrap;gap:8px;}
.hot-chip{
  border:1px solid var(--line);border-radius:999px;padding:7px 14px;font-size:13px;
  color:var(--muted);cursor:pointer;background:transparent;transition:.15s;user-select:none;
}
.hot-chip:active{transform:scale(.96);}
.hot-chip.active{background:var(--white);color:#0a0a0a;border-color:var(--white);font-weight:600;}
.hot-chip small{opacity:.6;margin-left:5px;font-size:11px;}

/* Params */
.param-row{display:flex;gap:14px;margin-bottom:16px;flex-wrap:wrap;}
.param-group{flex:1;min-width:160px;}
.param-group label{display:block;font-size:12px;color:var(--muted);margin-bottom:7px;letter-spacing:1px;}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:9px;overflow:hidden;}
.seg-opt{
  background:var(--panel-2);color:var(--muted);border:none;padding:10px 16px;font-size:14px;cursor:pointer;transition:.15s;
}
.seg-opt + .seg-opt{border-left:1px solid var(--line);}
.seg-opt.active{background:var(--white);color:#0a0a0a;font-weight:600;}

/* Buttons */
.btn-primary{
  width:100%;background:var(--white);color:#0a0a0a;border:none;border-radius:10px;
  padding:14px;font-size:16px;font-weight:600;letter-spacing:3px;cursor:pointer;transition:.15s;
}
.btn-primary:active{transform:scale(.99);opacity:.9;}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;}

/* Copies */
.copies-card{display:flex;flex-direction:column;gap:14px;}
.copy-item{
  border:1px solid var(--line);border-radius:12px;padding:16px;background:var(--panel-2);position:relative;
}
.copy-item .idx{
  position:absolute;top:-10px;left:14px;background:var(--white);color:#0a0a0a;
  font-size:11px;font-weight:700;padding:2px 9px;border-radius:999px;letter-spacing:1px;
}
.copy-title{font-size:16px;font-weight:600;margin:4px 0 12px;letter-spacing:.5px;}
.sec{border-left:2px solid var(--line-strong);padding:6px 0 6px 12px;margin:10px 0;}
.sec .sec-label{font-size:11px;color:var(--muted-2);letter-spacing:2px;display:block;margin-bottom:3px;}
.sec .sec-body{font-size:14px;color:var(--txt);white-space:pre-wrap;word-break:break-word;}
.disclaimer{
  margin-top:12px;padding:10px 12px;border:1px dashed var(--line);border-radius:8px;
  font-size:11.5px;color:var(--muted-2);line-height:1.6;white-space:pre-wrap;
}
.slogan{font-size:12px;color:var(--muted);letter-spacing:1px;margin:8px 0;}
.slogan.open{color:var(--white);}
.tags{margin-top:10px;display:flex;flex-wrap:wrap;gap:6px;}
.tag{font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:3px 10px;}
.copy-actions{margin-top:12px;display:flex;gap:8px;}
.copy-actions button{
  flex:1;background:transparent;color:var(--txt);border:1px solid var(--line-strong);
  border-radius:8px;padding:9px;font-size:13px;cursor:pointer;transition:.15s;
}
.copy-actions button:active{background:rgba(255,255,255,.08);}
.hot-badge{display:inline-block;font-size:11px;color:#0a0a0a;background:var(--white);padding:2px 8px;border-radius:999px;margin-bottom:6px;letter-spacing:1px;}

/* Error / friendly */
.friendly-error{
  border:1px solid var(--line);border-radius:12px;padding:20px 16px;background:var(--panel-2);text-align:center;
}
.friendly-error .ic{font-size:30px;margin-bottom:8px;}
.friendly-error p{margin:0 0 14px;color:var(--muted);font-size:14px;}
.friendly-error .errmsg{font-size:11px;color:var(--muted-2);margin-top:8px;word-break:break-all;}
.btn-retry{
  background:var(--white);color:#0a0a0a;border:none;border-radius:9px;padding:11px 22px;
  font-size:14px;font-weight:600;letter-spacing:2px;cursor:pointer;
}

/* Loading */
.loading{text-align:center;color:var(--muted);font-size:13px;padding:24px;}
.loading .spin{
  width:22px;height:22px;border:2px solid var(--line);border-top-color:var(--white);
  border-radius:50%;margin:0 auto 10px;animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* Footer */
.site-footer{max-width:760px;margin:0 auto;padding:20px;text-align:center;font-size:11px;color:var(--muted-2);line-height:1.8;}
.site-footer .muted{color:var(--muted-2);}

@media (max-width:480px){
  .series-list{grid-template-columns:1fr;}
  .brand-text h1{font-size:22px;letter-spacing:4px;}
}