:root{
  --ink:#eef1f5; --sub:#9aa6b6; --glass:rgba(255,255,255,.07);
  --glass-border:rgba(255,255,255,.14); --accent:#e3c39a; --radius:18px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{min-height:100%}
body{
  font-family:-apple-system,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);line-height:1.6;overflow-x:hidden;
  background:radial-gradient(1200px 600px at 15% -10%,#21314a 0%,transparent 55%),
             radial-gradient(900px 500px at 95% 10%,#2c2438 0%,transparent 50%),
             linear-gradient(160deg,#10151f 0%,#161c28 100%);
  background-attachment:fixed;
}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
nav{display:flex;align-items:center;justify-content:space-between;padding:24px 0}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:20px;letter-spacing:.5px}
.brand .mark{width:32px;height:32px;border-radius:9px;
  background:linear-gradient(135deg,var(--accent),#c9a877);
  display:grid;place-items:center;color:#1a1f29;font-weight:800;font-size:13px}
.nav-right{display:flex;gap:10px;align-items:center}
.pill{border:1px solid var(--glass-border);background:var(--glass);
  backdrop-filter:blur(10px);border-radius:999px;padding:8px 16px;font-size:13px;
  color:var(--sub);cursor:pointer;text-decoration:none;transition:.18s;
  font-family:inherit}
.pill:hover{color:var(--accent);border-color:var(--accent)}

/* hero */
.hero{text-align:center;padding:54px 0 40px}
.hero h1{font-size:42px;font-weight:800;letter-spacing:-.5px;margin-bottom:14px}
.hero h1 .hl{color:var(--accent)}
.hero p{color:var(--sub);font-size:16px;max-width:560px;margin:0 auto 32px}
.drop{border:1px solid var(--glass-border);border-radius:var(--radius);
  background:var(--glass);backdrop-filter:blur(16px);padding:40px;cursor:pointer;
  transition:.2s;box-shadow:0 10px 40px rgba(0,0,0,.35);max-width:560px;margin:0 auto}
.drop:hover,.drop.drag{border-color:var(--accent);background:rgba(227,195,154,.08)}
.drop .ic{width:50px;height:50px;border-radius:14px;background:rgba(227,195,154,.14);
  color:var(--accent);display:grid;place-items:center;margin:0 auto 14px;font-size:24px}
.drop b{font-size:16px}
.drop span{color:var(--sub);font-size:13px}
.trust{margin-top:16px;color:var(--sub);font-size:12px}

/* tools */
.sec-title{font-size:14px;font-weight:700;color:var(--sub);letter-spacing:2px;
  text-transform:uppercase;margin:50px 0 18px}
.group{margin-bottom:14px}
.gtitle{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:1.5px;
  margin:26px 0 12px;opacity:.9}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:860px){.grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.grid{grid-template-columns:1fr}.hero h1{font-size:30px}.hero{padding:36px 0 30px}}
.card{background:var(--glass);backdrop-filter:blur(12px);
  border:1px solid var(--glass-border);border-radius:var(--radius);
  padding:20px;cursor:pointer;transition:.18s}
.card:hover{transform:translateY(-3px);border-color:var(--accent);
  background:rgba(227,195,154,.08)}
.card .ci{width:42px;height:42px;border-radius:11px;background:rgba(227,195,154,.14);
  color:var(--accent);display:grid;place-items:center;margin-bottom:12px;font-size:19px}
.card h3{font-size:15px;margin-bottom:4px}
.card p{font-size:12.5px;color:var(--sub)}
footer{text-align:center;color:var(--sub);font-size:12px;padding:50px 0 40px}

.hidden{display:none !important}

/* workspace */
.back{margin:18px 0 6px}
#workspace h2{font-size:26px;font-weight:800;margin-bottom:4px}
.ws-desc{color:var(--sub);font-size:14px;margin-bottom:22px}
.ws-card{background:var(--glass);backdrop-filter:blur(12px);
  border:1px solid var(--glass-border);border-radius:var(--radius);
  padding:20px;margin-bottom:18px}
.ws-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.ws-label{font-size:14px;font-weight:600;color:var(--ink)}
#wsFile{color:var(--sub);font-size:13px;max-width:100%}
#wsFile::file-selector-button{background:rgba(227,195,154,.16);color:var(--accent);
  border:1px solid var(--glass-border);border-radius:9px;padding:7px 14px;margin-right:12px;
  cursor:pointer;font-family:inherit}
.ws-filelist{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.fitem{display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.04);
  border:1px solid var(--glass-border);border-radius:11px;padding:9px 13px;font-size:13px}
.fname{color:var(--ink);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fsize{color:var(--sub);font-size:12px;white-space:nowrap}
.fdel{background:transparent;border:none;color:var(--sub);cursor:pointer;font-size:14px;
  padding:2px 6px;border-radius:6px}
.fdel:hover{color:#ff9a9a}

.ws-config{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:22px}
@media(max-width:680px){.ws-config{grid-template-columns:1fr}}
.field{background:var(--glass);border:1px solid var(--glass-border);border-radius:13px;
  padding:14px 15px;display:flex;flex-direction:column;gap:8px}
.field.ok{border-color:var(--accent)}
.field label{font-size:12.5px;color:var(--sub);font-weight:600}
.inp{background:rgba(10,14,22,.55);border:1px solid var(--glass-border);border-radius:9px;
  color:var(--ink);padding:9px 11px;font-size:14px;font-family:inherit;width:100%}
.inp:focus{outline:none;border-color:var(--accent)}
.inp.color{height:40px;padding:4px;cursor:pointer}
select.inp{cursor:pointer}
.rwrap{display:flex;align-items:center;gap:12px}
.rwrap .inp[type=range]{flex:1;padding:0}
.rval{font-size:13px;color:var(--accent);min-width:38px;text-align:right}

.start{display:block;width:100%;background:linear-gradient(135deg,var(--accent),#c9a877);
  color:#1a1f29;font-weight:700;font-size:16px;border:none;border-radius:14px;
  padding:15px;cursor:pointer;font-family:inherit;transition:.18s;
  box-shadow:0 8px 30px rgba(227,195,154,.22)}
.start:hover{transform:translateY(-2px)}
.start:disabled{opacity:.55;cursor:wait;transform:none}

.ws-progress{margin-top:20px;display:flex;align-items:center;gap:14px}
.bar-track{flex:1;height:10px;border-radius:999px;background:rgba(255,255,255,.08);
  overflow:hidden;border:1px solid var(--glass-border)}
.bar{height:100%;width:0%;border-radius:999px;
  background:linear-gradient(90deg,var(--accent),#c9a877);transition:width .25s ease}
.pct{font-size:13px;color:var(--accent);min-width:42px;text-align:right}

.ws-result{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.ritem{display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:var(--glass);border:1px solid var(--glass-border);border-radius:12px;
  padding:12px 15px;font-size:14px}
.ritem span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dl{background:rgba(227,195,154,.16);color:var(--accent);border:1px solid var(--glass-border);
  border-radius:9px;padding:7px 16px;cursor:pointer;font-family:inherit;font-size:13px;
  white-space:nowrap}
.dl:hover{border-color:var(--accent)}
.dlall{margin-top:6px;background:transparent;color:var(--accent);border:1px solid var(--accent);
  border-radius:11px;padding:11px;cursor:pointer;font-family:inherit;font-size:14px}
.dlall:hover{background:rgba(227,195,154,.1)}
.dlrow{display:flex;gap:10px;margin-top:6px}
.dlrow .dlall{flex:1;margin-top:0}
.dlall.ghost{color:var(--text-dim);border-color:var(--glass-border)}
.dlall.ghost:hover{background:rgba(255,255,255,.04);border-color:var(--text-dim)}

.toast{position:fixed;left:50%;bottom:32px;transform:translateX(-50%) translateY(20px);
  background:rgba(20,26,38,.92);backdrop-filter:blur(10px);border:1px solid var(--glass-border);
  color:var(--ink);padding:12px 22px;border-radius:12px;font-size:14px;opacity:0;
  pointer-events:none;transition:.25s;z-index:99}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}