/* ============ 期权工具助手 · 应用风格系统（与首页同源） ============ */
:root{
  --bg:#070b14;
  --bg2:#0b1120;
  --card:rgba(255,255,255,.045);
  --card-hover:rgba(255,255,255,.075);
  --line:rgba(255,255,255,.09);
  --text:#e9edf5;
  --muted:#97a1b8;
  --blue:#4f8cff;
  --blue-soft:rgba(79,140,255,.14);
  --gold:#f5c451;
  --up:#ff4d4f;
  --down:#00c48c;
  --radius:16px;
  --maxw:1280px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.bg-glow{position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(600px 420px at 12% -5%, rgba(79,140,255,.16), transparent 60%),
    radial-gradient(700px 480px at 88% 8%, rgba(245,196,81,.08), transparent 60%),
    radial-gradient(900px 600px at 50% 120%, rgba(79,140,255,.07), transparent 60%)}

/* ---------- nav（与首页一致） ---------- */
nav{position:sticky;top:0;z-index:50;transition:background .3s,box-shadow .3s,border-color .3s;border-bottom:1px solid transparent}
nav.scrolled{background:rgba(7,11,20,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);box-shadow:0 8px 30px rgba(0,0,0,.35)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:.5px}
.logo-mark{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,#4f8cff,#7a5cff);color:#fff;font-size:15px;font-weight:800;
  box-shadow:0 4px 14px rgba(79,140,255,.35)}
.logo small{display:block;font-size:10px;font-weight:500;color:var(--muted);letter-spacing:1.5px}
.nav-links{display:flex;gap:26px;font-size:14px;color:var(--muted)}
.nav-links a{padding:4px 2px;border-bottom:2px solid transparent;transition:color .15s,border-color .15s}
.nav-links a:hover{color:var(--text)}
.nav-links a.on{color:var(--text);border-bottom-color:var(--blue);font-weight:600}
.nav-cta{display:flex;align-items:center;gap:12px}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:8px;color:var(--text);width:40px;height:38px;font-size:17px;cursor:pointer}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:none;cursor:pointer;
  font-family:inherit;font-size:14px;font-weight:600;border-radius:10px;padding:9px 18px;
  transition:transform .15s,box-shadow .15s,background .2s,color .2s}
.btn:active{transform:scale(.97)}
.btn-primary{background:linear-gradient(135deg,#4f8cff,#3f6fe8);color:#fff;box-shadow:0 6px 20px rgba(79,140,255,.35)}
.btn-primary:hover{box-shadow:0 8px 26px rgba(79,140,255,.5);transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.06);color:var(--text);border:1px solid var(--line)}
.btn-ghost:hover{background:rgba(255,255,255,.11)}
.btn-sm{padding:6px 12px;font-size:12.5px;border-radius:8px}
.btn-lg{padding:13px 26px;font-size:15px;border-radius:12px}
.btn-block{width:100%}
.btn-green{background:linear-gradient(135deg,#00c48c,#00a87a);color:#fff;box-shadow:0 6px 18px rgba(0,196,140,.28)}
.btn-red{background:linear-gradient(135deg,#ff5b5d,#e63a3c);color:#fff;box-shadow:0 6px 18px rgba(255,77,79,.28)}

/* ---------- page shell ---------- */
.page{padding:32px 0 64px}
.page-head{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:16px;margin-bottom:24px}
.page-head h1{font-size:26px;font-weight:800;letter-spacing:.3px}
.page-head .sub{color:var(--muted);font-size:13.5px;margin-top:6px}
.page-head .acts{display:flex;gap:10px;flex-wrap:wrap}

/* ---------- panel ---------- */
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-bottom:20px}
.panel-title{font-size:14px;font-weight:700;margin-bottom:14px;display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.panel-title .hint{font-size:12px;color:var(--muted);font-weight:400}

/* ---------- kpi ---------- */
.kpis{display:grid;gap:14px;margin-bottom:20px}
.kpis.c4{grid-template-columns:repeat(4,1fr)}
.kpis.c6{grid-template-columns:repeat(6,1fr)}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px;transition:border-color .2s}
.kpi:hover{border-color:rgba(255,255,255,.16)}
.kpi .k{font-size:12px;color:var(--muted)}
.kpi .v{font-size:21px;font-weight:800;margin-top:4px;font-variant-numeric:tabular-nums}
.kpi .v.up{color:var(--up)} .kpi .v.down{color:var(--down)} .kpi .v.gold{color:var(--gold)}
.kpi .d{font-size:11.5px;color:var(--muted);margin-top:2px}

/* ---------- table ---------- */
.tbl-wrap{overflow-x:auto;border-radius:12px;border:1px solid var(--line);background:var(--card)}
table.tbl{width:100%;border-collapse:collapse;font-size:13px;min-width:760px}
.tbl th{font-size:11.5px;color:var(--muted);font-weight:600;text-align:left;padding:11px 14px;
  border-bottom:1px solid var(--line);white-space:nowrap;background:rgba(255,255,255,.02)}
.tbl th.r,.tbl td.r{text-align:right}
.tbl td{padding:11px 14px;border-bottom:1px solid rgba(255,255,255,.05);white-space:nowrap;font-variant-numeric:tabular-nums}
.tbl tr:last-child td{border-bottom:none}
.tbl tbody tr{transition:background .12s}
.tbl tbody tr:hover{background:rgba(255,255,255,.04)}
.tbl td.up{color:var(--up)} .tbl td.down{color:var(--down)} .tbl td.gold{color:var(--gold)}
.tbl .code{font-weight:700}
.tbl .name{color:var(--muted);font-size:12px}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:11px;padding:3px 9px;border-radius:999px;
  border:1px solid var(--line);color:var(--muted);white-space:nowrap}
.badge.blue{color:var(--blue);border-color:rgba(79,140,255,.35);background:var(--blue-soft)}
.badge.gold{color:var(--gold);border-color:rgba(245,196,81,.35);background:rgba(245,196,81,.1)}
.badge.red{color:var(--up);border-color:rgba(255,77,79,.35);background:rgba(255,77,79,.1)}
.badge.green{color:var(--down);border-color:rgba(0,196,140,.35);background:rgba(0,196,140,.1)}

/* ---------- tabs ---------- */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:16px;overflow-x:auto}
.tab{padding:10px 16px;font-size:13.5px;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;
  white-space:nowrap;transition:color .15s,border-color .15s}
.tab:hover{color:var(--text)}
.tab.on{color:var(--text);border-bottom-color:var(--blue);font-weight:600}

/* ---------- segmented ---------- */
.seg{display:inline-flex;background:rgba(0,0,0,.3);border:1px solid var(--line);border-radius:10px;padding:3px;gap:3px}
.seg button{background:none;border:none;color:var(--muted);font-family:inherit;font-size:13px;padding:6px 16px;border-radius:8px;cursor:pointer;transition:background .15s,color .15s}
.seg button.on{background:var(--blue-soft);color:var(--blue);font-weight:600}

/* ---------- filters ---------- */
.filters{display:flex;flex-wrap:wrap;gap:14px;align-items:flex-end}
.f-item{display:flex;flex-direction:column;gap:6px}
.f-item label{font-size:11.5px;color:var(--muted)}
.f-item input,.f-item select{background:rgba(0,0,0,.3);border:1px solid var(--line);border-radius:8px;color:var(--text);
  font-family:inherit;font-size:13px;padding:7px 10px;min-width:108px}
.f-item input:focus,.f-item select:focus{outline:none;border-color:rgba(79,140,255,.55)}
.f-item .range{display:flex;align-items:center;gap:6px;color:var(--muted);font-size:12px}

/* ---------- forms ---------- */
.input{background:rgba(0,0,0,.3);border:1px solid var(--line);border-radius:10px;color:var(--text);
  font-family:inherit;font-size:14px;padding:10px 14px;width:100%}
.input:focus{outline:none;border-color:rgba(79,140,255,.55)}
.check{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);cursor:pointer}
.check input{accent-color:var(--blue);width:15px;height:15px}

/* ---------- qr ---------- */
.qr-wrap{background:#fff;border-radius:14px;padding:14px;display:inline-block;box-shadow:0 14px 40px rgba(0,0,0,.4)}
.qr{display:grid;grid-template-columns:repeat(21,1fr);gap:1px;width:186px;height:186px}
.qr i{background:transparent}
.qr i.on{background:#0b0b0f}

/* ---------- bars chart ---------- */
.bars{display:flex;align-items:flex-end;gap:14px;height:160px;padding-top:8px}
.bar{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:6px;height:100%}
.bar .fill{width:100%;background:linear-gradient(180deg,#4f8cff,#2f56c8);border-radius:6px 6px 2px 2px;min-height:2px;transition:height .4s}
.bar:nth-child(odd) .fill{background:linear-gradient(180deg,#f5c451,#c79a2a)}
.bar .lbl{font-size:11px;color:var(--muted)}
.bar .val{font-size:11px;color:var(--muted)}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:24px 0;background:rgba(0,0,0,.22);font-size:12px;color:var(--muted);text-align:center;line-height:2}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .kpis.c4,.kpis.c6{grid-template-columns:repeat(2,1fr)}
  .page-head{flex-direction:column;align-items:flex-start}
  .nav-links{display:none}
  .burger{display:block}
  .nav-links.open{display:flex;position:absolute;top:64px;left:0;right:0;flex-direction:column;gap:0;
    background:rgba(7,11,20,.97);border-bottom:1px solid var(--line);padding:10px 24px 16px}
  .nav-links.open a{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.06)}
}
@media (max-width:600px){
  .kpis.c4,.kpis.c6{grid-template-columns:repeat(2,1fr)}
  .filters{gap:10px}
  .page{padding:22px 0 44px}
}