:root{
  --navy:#0a1727; --navy-2:#0f2236; --cream:#f1ede1; --paper:#f6f3ea; --muted:#c9cdc6; --steel:#8b98a8;
  --ink:#0a1727; --ink-2:#26323f; --ink-3:#4a5664; --line:#e2ddd0; --line-2:#ece8dc; --accent:#c40f20;
  --green:#0f7a5f; --green-bg:#e3f1ec; --red:#b4471b; --red-bg:#f6e6dd; --mint:#7fd1b9;
  --serif:'Fraunces',Georgia,'Noto Serif SC',serif; --sans:'Hanken Grotesk',system-ui,-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,Menlo,monospace; --cjk:'Noto Serif SC','Songti SC',serif; --gutter:32px;
}
*{box-sizing:border-box}
body{margin:0;font-family:var(--sans);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:6px}
.wrap{max-width:1240px;margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}
.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;color:var(--cream)}
.brand .mark{flex:none;width:30px;height:32px}   /* the red Peak A (A99 Icon Kit) */
.brand .en{display:flex;align-items:baseline;gap:9px}
.brand b{font-family:var(--serif);font-size:25px;font-weight:600;letter-spacing:-.01em}
.brand .en span{font-family:var(--serif);font-size:19px}
.mono{font-family:var(--mono)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.langlink{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border:1px solid rgba(241,237,225,.18);border-radius:999px;color:var(--muted);font-family:var(--mono);font-size:13px;text-decoration:none}
.langlink:hover{color:var(--cream);border-color:var(--cream)}

/* ── public (navy) pages: sign-in, register, code, messages ── */
body.public{background:var(--navy);color:var(--cream);min-height:100vh;display:flex;flex-direction:column}
body.public a{color:var(--cream)}
.pub-head{border-bottom:1px solid rgba(241,237,225,.10)}
.pub-head .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 16px;padding-top:16px;padding-bottom:16px}
.pub-head .acts{display:flex;align-items:center;gap:10px}
.pub-head .back{display:inline-flex;align-items:center;min-height:44px;padding:0 10px;color:var(--muted);text-decoration:none;font-size:15px}
.pub-main{flex:1 1 auto;width:100%;display:flex;flex-wrap:wrap;gap:64px;align-items:flex-start;padding-top:72px;padding-bottom:80px}
.pub-copy{flex:1 1 420px;min-width:0;padding-top:12px}
.eyebrow{margin:0 0 20px;font-family:var(--mono);font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--steel)}
.pub-copy h1{margin:0;font-family:var(--serif);font-weight:400;font-size:clamp(36px,4.6vw,60px);line-height:1.06;letter-spacing:-.02em}
.pub-copy .lede{margin:22px 0 0;max-width:480px;font-size:18px;color:var(--muted)}
.points{list-style:none;margin:34px 0 0;padding:0;display:flex;flex-direction:column;gap:14px;max-width:500px}
.points li{display:flex;gap:14px;align-items:flex-start;color:var(--muted)}
.points li strong{color:#e4e2d9;font-weight:600}
.points svg{flex:0 0 22px;margin-top:2px;fill:none;stroke:var(--mint);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.steps{list-style:none;margin:36px 0 0;padding:0;max-width:500px}
.steps li{display:flex;gap:18px;padding:16px 0;border-top:1px solid rgba(241,237,225,.10)}
.steps li:last-child{border-bottom:1px solid rgba(241,237,225,.10)}
.steps .n{flex:0 0 28px;font-family:var(--mono);font-size:13px;color:var(--steel);padding-top:3px}
.steps strong{font-weight:600}
.steps span span{color:var(--muted)}
.card{flex:0 1 480px;min-width:0;width:100%;padding:36px;border-radius:22px;background:var(--cream);color:var(--navy);display:flex;flex-direction:column;gap:18px}
body.public .card a{color:var(--navy);font-weight:600}
.card h2{margin:0;font-family:var(--serif);font-weight:500;font-size:30px}
.card .sub{margin:6px 0 0;font-size:15px;color:var(--ink-3)}
.field{display:flex;flex-direction:column;gap:7px}
.field label,.lbl{font-size:14px;font-weight:600}
.field .opt{font-weight:400;color:var(--ink-3)}
.lblrow{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
body.public .card a.fine{font-size:14px;font-weight:400}
.field input,.field select{min-height:50px;padding:0 15px;border-radius:12px;border:1px solid #b9b3a3;background:#fff;font-family:var(--sans);font-size:16px;color:var(--navy);width:100%}
.field input:focus,.field select:focus{outline:2px solid var(--navy);outline-offset:1px}
.field.bad input,.field.bad select{border-color:var(--red);background:#fffaf7}
.hint{margin:0;font-size:13px;color:var(--ink-3)}
.err{margin:0;font-size:13px;color:var(--red);font-weight:600}
.row2{display:flex;flex-wrap:wrap;gap:14px}
.row2 .field{flex:1 1 180px;min-width:0}
.check{display:flex;align-items:flex-start;gap:12px;font-size:14px;line-height:1.5;color:var(--ink-2);cursor:pointer}
.check input{flex:0 0 20px;width:20px;height:20px;margin:1px 0 0;accent-color:var(--navy)}
.divider{height:1px;background:rgba(10,23,39,.12)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:52px;padding:0 24px;border-radius:999px;border:0;font-family:var(--sans);font-size:16px;font-weight:600;text-decoration:none;cursor:pointer}
.btn-dark{background:var(--navy);color:var(--cream) !important}
.btn-dark:hover{background:#13263c}
.btn-accent{background:var(--accent);color:#fff7f2 !important}
.btn-line{background:transparent;border:1px solid #cfc9b9;color:var(--navy)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.note{padding:12px 14px;border-radius:12px;font-size:14px;line-height:1.5}
.note.error{background:var(--red-bg);color:#7a2c0e}
.note.info{background:#e7ecf3;color:#1d3554}
.note.ok{background:var(--green-bg);color:#0b5a46}
.small{margin:0;font-size:14px;color:var(--ink-3)}
.code-input{letter-spacing:.4em;font-family:var(--mono) !important;font-size:22px !important;text-align:center}
.pub-foot{border-top:1px solid rgba(241,237,225,.10)}
.pub-foot .wrap{padding-top:22px;padding-bottom:26px}
.pub-foot p{margin:0;font-size:13px;color:var(--steel)}
.pub-foot p+p{margin-top:6px}
.pub-foot a,.app-foot a{white-space:nowrap}
.app-foot{border-top:1px solid var(--line)}
.app-foot p{margin:0;padding-top:18px;padding-bottom:26px;font-size:13px;color:var(--ink-3)}

/* ── portal (paper) pages ── */
body.app{background:var(--paper);color:var(--ink);min-height:100vh;display:flex;flex-direction:column}
body.app .app-main{flex:1 0 auto;width:100%}
body.app a{color:var(--ink)}
body.app .app-head a.brand{color:var(--cream)}
body.app .app-head a.langlink{color:var(--muted)}
body.app .app-head a.langlink:hover{color:var(--cream)}
.app-head{background:var(--navy);color:var(--cream)}
.app-head .bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;padding-bottom:4px}
.app-head .left,.app-head .right{display:flex;flex-wrap:wrap;align-items:center;gap:14px}
.ro{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;border:1px solid rgba(127,209,185,.5);color:var(--mint);font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase}
.ro svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.who{font-size:15px;color:#e4e2d9}
.signout{display:inline}
.signout button{min-height:44px;padding:0 12px;background:transparent;border:0;color:var(--muted);font-family:var(--sans);font-size:15px;text-decoration:underline;cursor:pointer}
.tabs{display:flex;flex-wrap:wrap;gap:4px;padding-top:6px}
.tabs a{display:inline-flex;align-items:center;gap:8px;min-height:46px;padding:0 16px;border-bottom:3px solid transparent;color:var(--muted) !important;text-decoration:none;font-size:15px}
.tabs a[aria-current="page"]{border-bottom-color:var(--cream);color:var(--cream) !important;font-weight:600}
.tabs .badge{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;padding:2px 8px;border-radius:999px;background:rgba(241,237,225,.10)}
.app-main{padding-top:36px;padding-bottom:72px;display:flex;flex-direction:column;gap:22px}
.page-head h1{margin:0;font-family:var(--serif);font-weight:400;font-size:38px;letter-spacing:-.015em}
.page-head .meta{margin:6px 0 0;max-width:760px;font-size:15px;color:var(--ink-3)}
.page-head .asof{margin:4px 0 0;font-size:14px;color:var(--ink-3)}
.tag{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;padding:4px 10px;border-radius:999px;background:var(--line-2);color:var(--ink-3)}
.kpis{display:flex;flex-wrap:wrap;gap:16px}
.kpi{flex:1 1 220px;min-width:0;padding:22px;border-radius:18px;background:#fff;border:1px solid var(--line)}
.kpi.dark{background:var(--navy);color:var(--cream);border-color:var(--navy)}
.kpi p{margin:0}
.kpi .l{font-size:14px;color:var(--ink-3)}
.kpi.dark .l,.kpi.dark .d{color:var(--muted)}
.kpi .v{margin-top:8px;font-family:var(--mono);font-size:30px;letter-spacing:-.01em}
.kpi .d{margin-top:10px;font-size:13px;color:var(--ink-3)}
.panel{padding:26px;border-radius:18px;background:#fff;border:1px solid var(--line)}
.panel h2{margin:0;font-family:var(--serif);font-weight:500;font-size:24px}
.panel .ps{margin:4px 0 0;font-size:14px;color:var(--ink-3)}
.two{display:flex;flex-wrap:wrap;gap:22px;align-items:stretch}
.two>.panel{flex:1 1 420px;min-width:0}
.ph{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px}
.seg{display:flex;gap:8px}
.seg a{display:inline-flex;align-items:center;min-height:44px;padding:0 16px;border-radius:999px;border:1px solid #cfc9b9;background:#fff;text-decoration:none;font-size:14px;font-weight:500}
.seg a[aria-current="true"]{background:var(--navy);border-color:var(--navy);color:var(--cream) !important}
.bar-stack{margin-top:22px;display:flex;height:18px;border-radius:999px;overflow:hidden;gap:2px;background:#fff}
.legend{list-style:none;margin:20px 0 0;padding:0;display:flex;flex-direction:column;gap:12px}
.legend li{display:flex;align-items:center;gap:12px}
.legend .sw{flex:0 0 12px;height:12px;border-radius:3px}
.legend .nm{flex:1 1 auto;font-size:15px}
.legend .nm small{color:var(--ink-3);font-size:13px}
.legend .pc{flex:0 0 64px;text-align:right;font-family:var(--mono);font-size:14px;font-weight:500}
.chg{list-style:none;margin:16px 0 0;padding:0}
.chg li{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;padding:12px 0;border-top:1px solid var(--line-2)}
.chg .dt{flex:0 0 100px;font-size:14px;color:var(--ink-3)}
.pill{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:13px;font-weight:600;white-space:nowrap}
.pill.in{background:var(--green-bg);color:var(--green)}
.pill.out{background:var(--line-2);color:var(--ink-3)}
.pill.exit{background:var(--red-bg);color:var(--red)}
.pill .dot{width:7px;height:7px;border-radius:50%;background:currentColor}
.tbl-wrap{margin-top:16px;overflow-x:auto}
table.tbl{width:100%;min-width:760px;border-collapse:collapse;font-size:15px}
.tbl th{text-align:left;font-weight:400;font-size:13px;color:var(--ink-3);padding:0 10px 10px;border-bottom:1px solid var(--line)}
.tbl td{padding:13px 10px;border-bottom:1px solid var(--line-2);vertical-align:middle}
.tbl .num{text-align:right;font-family:var(--mono)}
.tbl th.num{font-family:var(--sans)}
.tbl .sym{font-family:var(--mono);font-weight:500}
.tbl tr:last-child td{border-bottom:0}
.foot-note{margin:14px 0 0;font-size:13px;color:var(--ink-3)}
/* my account (accounts/<key>.json) */
table.acct-sum{min-width:0;max-width:520px}
.acct-sum th[scope=row]{font-size:15px;font-weight:400;color:var(--ink-2);padding:12px 10px;border-bottom:1px solid var(--line-2)}
.acct-sum tr:last-child th{border-bottom:0}
table.acct-fills{min-width:520px}
.acct-wait{list-style:none;margin:16px 0 0;padding:0;display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--ink-3)}
.panel.acct-p{margin-top:20px}
/* model page: 10-year backtest (perf.py) */
.panel.bt{margin-top:20px}
.bt-stamp{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--red);border:1px solid var(--red);border-radius:999px;padding:4px 10px}
.bt-legend{list-style:none;margin:16px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px 22px;font-size:14px;color:var(--ink-2)}
.bt-legend li{display:flex;align-items:center;gap:8px}
.bt-legend .ln{display:inline-block;width:26px;height:0;border-top:2px solid var(--navy)}
.bt-legend .ln.spy{border-top:2px dashed #8a8984}
.bt-chart{margin:12px 0 0}
.bt-chart svg{display:block;width:100%;height:auto}
.bt-chart svg.compact{display:none}
@media (max-width:640px){.bt-chart svg.full{display:none}.bt-chart svg.compact{display:block}}
table.bt-tbl{min-width:0}
.bt-tbl tbody th{font-size:15px;font-weight:500;color:var(--ink-2);padding:13px 10px;border-bottom:1px solid var(--line-2);vertical-align:middle}
.bt-tbl tr:last-child th{border-bottom:0}
.bt-yh{margin:22px 0 0;font-size:16px;font-weight:600}
.cta{display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;padding:30px;border-radius:18px;background:var(--navy);color:var(--cream)}
.cta h2{margin:0;font-family:var(--serif);font-weight:400;font-size:26px}
.cta p{margin:8px 0 0;color:var(--muted)}
.cta>div{flex:1 1 480px;min-width:0}
.disc{margin:0;font-size:13px;line-height:1.7;color:var(--ink-3)}
.empty{padding:40px 28px;text-align:center}
.empty h2{margin:0 0 10px}
.empty p{margin:0 auto;max-width:560px;color:var(--ink-3)}
.qr{display:inline-block;padding:10px;border-radius:12px;background:#fff;border:1px solid var(--line)}
.key{font-family:var(--mono);font-size:15px;letter-spacing:.08em;word-break:break-all;background:var(--line-2);padding:8px 12px;border-radius:10px}
.form-col{display:flex;flex-direction:column;gap:14px;max-width:440px;margin-top:16px}
.form-col .field input{border-color:#cfc9b9}
.inline{display:inline}
.acts-row{display:flex;flex-wrap:wrap;gap:8px}
.adm td{font-size:14px}
.adm select{min-height:40px;border-radius:10px;border:1px solid #cfc9b9;padding:0 10px;font-family:var(--sans);font-size:14px;background:#fff}

[lang="zh-Hans"] .pub-copy h1,[lang="zh-Hans"] .card h2,[lang="zh-Hans"] .page-head h1,[lang="zh-Hans"] .panel h2,[lang="zh-Hans"] .cta h2{font-family:var(--cjk);font-weight:500;letter-spacing:.01em}

@media (max-width:640px){
  :root{--gutter:16px}
  .pub-main{padding-top:36px;gap:36px}
  .card{padding:24px 18px}
  .panel{padding:20px 16px}
  .page-head h1{font-size:30px}
  .kpi .v{font-size:26px}
  .cta{padding:22px 18px}
}