:root{
  --bg:#0e1116;
  --bg-soft:#161b23;
  --panel:#1b212b;
  --panel-2:#212835;
  --line:#2b3340;
  --line-soft:#222a36;
  --text:#e8edf4;
  --text-dim:#9aa6b6;
  --text-faint:#6b7686;
  --brand:#ff5c39;
  --brand-2:#ffb020;
  --accent:#4d9fff;
  --good:#34c98a;
  --warn:#ffb020;
  --radius:14px;
  --shadow:0 8px 30px rgba(0,0,0,.35);
  --mono:"SF Mono",ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--sans);
  background:radial-gradient(1200px 600px at 80% -10%,rgba(255,92,57,.12),transparent 60%),
             radial-gradient(900px 500px at 0% 0%,rgba(77,159,255,.10),transparent 55%),
             var(--bg);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}

/* topbar */
.topbar{position:sticky;top:0;z-index:20;backdrop-filter:blur(12px);
  background:rgba(14,17,22,.78);border-bottom:1px solid var(--line-soft)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:12px}
.logo{font-size:26px;line-height:1;filter:drop-shadow(0 2px 6px rgba(255,92,57,.4))}
.brand strong{display:block;font-size:16px;letter-spacing:.3px}
.brand-sub{display:block;font-size:12px;color:var(--text-faint)}
.topnav{display:flex;gap:8px}

/* buttons */
.ghost-btn{background:var(--panel-2);color:var(--text-dim);border:1px solid var(--line);
  padding:7px 14px;border-radius:9px;font-size:13px;cursor:pointer;transition:.15s;font-family:inherit}
.ghost-btn:hover{color:var(--text);border-color:var(--brand);background:var(--panel)}
.primary-btn{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#1a0e08;
  border:none;padding:13px 22px;border-radius:11px;font-size:15px;font-weight:700;cursor:pointer;
  width:100%;transition:.15s;box-shadow:0 6px 18px rgba(255,92,57,.32);font-family:inherit}
.primary-btn:hover{transform:translateY(-1px);box-shadow:0 9px 24px rgba(255,92,57,.42)}
.primary-btn:active{transform:translateY(0)}

/* layout */
.layout{display:grid;grid-template-columns:380px 1fr;gap:22px;padding-top:24px;padding-bottom:40px;align-items:start}
.panel{background:linear-gradient(180deg,var(--panel),var(--bg-soft));
  border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.input-panel{position:sticky;top:80px}
.panel-title{margin:0 0 4px;font-size:17px}
.panel-hint{margin:0 0 18px;font-size:12.5px;color:var(--text-faint)}

/* fields */
.field{margin-bottom:16px}
.field.two-col{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field.two-col>label{margin:0}
.field-label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--text-dim)}
.field-tip{font-weight:400;font-style:normal;color:var(--text-faint);font-size:11.5px}
input[type=text],select{width:100%;background:var(--bg);border:1px solid var(--line);
  color:var(--text);padding:10px 12px;border-radius:9px;font-size:13.5px;font-family:inherit;transition:.15s}
input[type=text]:focus,select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,92,57,.15)}
select{cursor:pointer;appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' stroke='%239aa6b6' stroke-width='1.6' fill='none'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;padding-right:30px}

/* chips */
.chips-input{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:8px;min-height:4px}
.chip{display:inline-flex;align-items:center;gap:6px;background:var(--panel-2);
  border:1px solid var(--line);border-radius:20px;padding:5px 10px 5px 12px;font-size:12.5px}
.chip b{font-weight:500;color:var(--text)}
.chip-x{cursor:pointer;color:var(--text-faint);font-size:15px;line-height:1;border:none;background:none;padding:0}
.chip-x:hover{color:var(--brand)}
.add-row{display:flex;gap:8px}
.add-row input{flex:1}
.add-btn{background:var(--panel-2);border:1px dashed var(--line);color:var(--text-dim);
  border-radius:9px;padding:0 14px;cursor:pointer;font-size:13px;white-space:nowrap;font-family:inherit}
.add-btn:hover{border-color:var(--brand);color:var(--text)}
.generate-row{margin-top:6px}

/* empty */
.empty-state{text-align:center;padding:48px 24px;color:var(--text-dim)}
.empty-emoji{font-size:52px;margin-bottom:10px}
.empty-state h2{font-size:18px;color:var(--text);margin:0 0 18px}
.empty-list{list-style:none;padding:0;margin:0 auto;max-width:460px;text-align:left;display:grid;gap:10px}
.empty-list li{background:var(--panel-2);border:1px solid var(--line-soft);border-radius:10px;
  padding:11px 14px;font-size:13.5px}
.empty-list b{color:var(--brand-2)}
.empty-foot{margin-top:22px;font-size:13px;color:var(--text-faint)}

/* result */
.hidden{display:none!important}
.result-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap;margin-bottom:16px}
.result-head h2{margin:0;font-size:20px}
.result-meta{margin:4px 0 0;font-size:12.5px;color:var(--text-faint)}
.result-actions{display:flex;gap:8px}

.tabs{display:flex;gap:4px;background:var(--bg);border:1px solid var(--line);
  border-radius:11px;padding:4px;margin-bottom:18px;overflow-x:auto}
.tab{flex:1;background:none;border:none;color:var(--text-dim);padding:9px 10px;border-radius:8px;
  font-size:13px;cursor:pointer;white-space:nowrap;transition:.15s;font-family:inherit;font-weight:600}
.tab:hover{color:var(--text)}
.tab.active{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#1a0e08}
.tab-pane{display:none;animation:fade .25s ease}
.tab-pane.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* cards */
.card{background:var(--panel-2);border:1px solid var(--line);border-radius:12px;
  padding:15px 16px;margin-bottom:12px;transition:.15s}
.card:hover{border-color:var(--line)}
.card-top{display:flex;align-items:center;gap:9px;margin-bottom:8px;flex-wrap:wrap}
.tag{font-size:11px;font-weight:700;padding:3px 9px;border-radius:6px;letter-spacing:.3px}
.tag-angle{background:rgba(255,92,57,.16);color:#ff8a6e;border:1px solid rgba(255,92,57,.3)}
.tag-num{background:rgba(77,159,255,.16);color:var(--accent);border:1px solid rgba(77,159,255,.3)}
.tag-good{background:rgba(52,201,138,.16);color:var(--good);border:1px solid rgba(52,201,138,.3)}
.tag-warn{background:rgba(255,176,32,.16);color:var(--warn);border:1px solid rgba(255,176,32,.3)}
.card-title{font-size:15px;font-weight:700;margin:0}
.hook{font-size:15px;line-height:1.55;margin:6px 0 10px;color:var(--text);
  border-left:3px solid var(--brand);padding-left:12px}
.hook .copy-inline{margin-left:8px;font-size:11px;color:var(--text-faint);cursor:pointer;border:none;background:none}
.hook .copy-inline:hover{color:var(--brand)}
.meta-row{display:flex;flex-wrap:wrap;gap:14px;font-size:12.5px;color:var(--text-dim);margin-top:8px}
.meta-row b{color:var(--text);font-weight:600}
.psych{font-size:12px;color:var(--text-faint);margin-top:6px}

/* persona */
.persona-grid{display:grid;gap:12px}
.persona .kv{font-size:13px;margin:4px 0;color:var(--text-dim)}
.persona .kv b{color:var(--text);font-weight:600;display:inline-block;min-width:62px}

/* storyboard */
.sb-block{margin-bottom:22px}
.sb-block h3{font-size:15px;margin:0 0 4px;display:flex;align-items:center;gap:8px}
.sb-sub{font-size:12px;color:var(--text-faint);margin:0 0 12px}
.shot{display:grid;grid-template-columns:64px 1fr;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line-soft)}
.shot:last-child{border-bottom:none}
.shot-time{font-family:var(--mono);font-size:12px;color:var(--brand-2);font-weight:700;padding-top:2px}
.shot-body .shot-role{font-size:11px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.5px}
.shot-body .shot-line{font-size:14px;color:var(--text);margin:2px 0 4px}
.shot-body .shot-visual{font-size:12.5px;color:var(--text-dim)}

/* abtest */
.ab-intro{font-size:13px;color:var(--text-dim);margin-bottom:14px;background:var(--bg);
  border:1px solid var(--line-soft);border-radius:9px;padding:11px 13px}
.ab-card .card-title{font-size:14px}
.variants{display:grid;gap:8px;margin-top:10px}
.variant{display:grid;grid-template-columns:24px 1fr;gap:10px;font-size:13px;align-items:start}
.variant .vk{font-family:var(--mono);font-weight:700;color:var(--accent)}
.ab-foot{font-size:12px;color:var(--text-faint);margin-top:10px;display:flex;gap:16px;flex-wrap:wrap}
.ab-foot b{color:var(--text)}

/* footer */
.site-foot{border-top:1px solid var(--line-soft);padding:22px 0 34px;margin-top:10px}
.site-foot p{margin:3px 0;font-size:12px;color:var(--text-faint);text-align:center}
.foot-method{color:var(--text-faint);opacity:.8}

/* toast */
.toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--good);color:#04120c;padding:11px 20px;border-radius:10px;font-size:14px;font-weight:600;
  opacity:0;pointer-events:none;transition:.25s;z-index:60;box-shadow:0 8px 24px rgba(0,0,0,.4)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

@media(max-width:900px){
  .layout{grid-template-columns:1fr;gap:16px}
  .input-panel{position:static}
  .brand-sub{display:none}
  .wrap{padding:0 14px}
  .field.two-col{grid-template-columns:1fr}
}