:root{
  --paper:#f3ede1; --paper2:#ece3d2; --card:#fbf7ee; --ink:#2a241b; --ink-soft:#5c5446;
  --pine:#1f4a3c; --pine-d:#163a2f; --gold:#a9791f; --gold-l:#c79a3e;
  --line:#ddd2bd; --buy:#1f6f4f; --sell:#9e3b32; --shadow:rgba(42,36,27,.10);
  --serif:"Noto Serif TC","Newsreader",serif; --sans:"Noto Sans TC",system-ui,sans-serif;
  --mono:"IBM Plex Mono",monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans); color:var(--ink); line-height:1.65;
  background:
    radial-gradient(circle at 12% 8%, rgba(169,121,31,.05), transparent 40%),
    radial-gradient(circle at 88% 90%, rgba(31,74,60,.06), transparent 45%),
    var(--paper);
  background-attachment:fixed;
}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
/* nav */
header{position:sticky;top:0;z-index:50;background:rgba(243,237,225,.86);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
nav{max-width:1080px;margin:0 auto;display:flex;align-items:center;gap:6px;padding:14px 22px;flex-wrap:wrap}
.brand{font-family:var(--serif);font-weight:700;font-size:21px;color:var(--pine);margin-right:auto;letter-spacing:.04em;display:flex;align-items:center;gap:9px}
.brand .mk{width:26px;height:26px;border:1.5px solid var(--gold);border-radius:50%;display:grid;place-items:center;font-size:13px;color:var(--gold);font-style:italic;font-family:var(--serif)}
.navlink{font-size:14px;padding:7px 13px;border-radius:999px;cursor:pointer;color:var(--ink-soft);border:1px solid transparent;transition:.2s;white-space:nowrap}
.navlink:hover{color:var(--pine)}
.navlink.active{background:var(--pine);color:#f3ede1;border-color:var(--pine)}
/* layout */
main{max-width:1080px;margin:0 auto;padding:0 22px}
section{padding:46px 0;animation:fade .4s ease}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--gold);margin-bottom:14px}
h1{font-family:var(--serif);font-weight:700;font-size:clamp(34px,6vw,58px);line-height:1.08;letter-spacing:.01em}
h1 em{font-style:italic;font-family:"Newsreader",var(--serif);color:var(--pine)}
h2{font-family:var(--serif);font-weight:600;font-size:26px;color:var(--pine);margin-bottom:6px;letter-spacing:.02em}
.lead{font-size:18px;color:var(--ink-soft);max-width:52ch;margin-top:18px}
/* hero */
.hero{padding-top:64px;border-bottom:1px solid var(--line);position:relative}
.hero:after{content:"持衡";position:absolute;right:-10px;bottom:-6px;font-family:var(--serif);font-size:170px;color:rgba(31,74,60,.05);font-weight:700;pointer-events:none;line-height:1}
.tools-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:40px}
.tool-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:28px;cursor:pointer;transition:.25s;position:relative;overflow:hidden;display:block}
.tool-card:hover{transform:translateY(-4px);box-shadow:0 16px 36px -18px var(--shadow);border-color:var(--gold-l)}
.tool-card .tag{font-family:var(--mono);font-size:11px;letter-spacing:.15em;color:var(--gold);text-transform:uppercase}
.tool-card h3{font-family:var(--serif);font-size:23px;color:var(--pine);margin:10px 0 8px}
.tool-card p{font-size:14.5px;color:var(--ink-soft)}
.tool-card .arrow{margin-top:18px;font-family:var(--mono);font-size:13px;color:var(--ink);display:inline-flex;gap:6px;align-items:center}
/* tool pages */
.tool-head{border-bottom:1px solid var(--line);padding-bottom:26px;margin-bottom:30px}
.grid2{display:grid;grid-template-columns:1.05fr 1.55fr;gap:34px;align-items:start}
.panel{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px}
.panel h4{font-family:var(--serif);font-size:16px;color:var(--pine);margin-bottom:16px;display:flex;align-items:center;gap:8px}
.panel h4 .no{font-family:var(--mono);font-size:12px;background:var(--pine);color:#f3ede1;width:20px;height:20px;border-radius:5px;display:grid;place-items:center}
.field{margin-bottom:14px}
.field label{display:block;font-size:12.5px;color:var(--ink-soft);margin-bottom:5px}
.field input{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:#fff;font-family:var(--mono);font-size:14px;color:var(--ink)}
.field input:focus{outline:none;border-color:var(--pine);box-shadow:0 0 0 3px rgba(31,74,60,.1)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
details{margin:6px 0 14px;border:1px dashed var(--line);border-radius:8px;padding:0 14px}
details summary{cursor:pointer;font-size:13px;color:var(--gold);padding:11px 0;font-weight:500}
details[open]{padding-bottom:8px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:4px 0 16px}
.chip{font-size:12.5px;padding:7px 13px;border:1px solid var(--line);border-radius:999px;background:#fff;cursor:pointer;transition:.18s;font-family:var(--sans)}
.chip:hover{border-color:var(--gold);color:var(--gold)}
.btn{width:100%;padding:13px;background:var(--pine);color:#f3ede1;border:none;border-radius:9px;font-family:var(--sans);font-size:15px;font-weight:500;cursor:pointer;transition:.2s;letter-spacing:.05em}
.btn:hover{background:var(--pine-d)}
.btn-sm{width:auto;padding:8px 14px;font-size:13px}
.ghost{background:transparent;color:var(--pine);border:1px solid var(--pine)}
.ghost:hover{background:var(--pine);color:#f3ede1}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:9px;overflow:hidden;margin-bottom:16px}
.seg button{padding:9px 16px;border:none;background:#fff;cursor:pointer;font-family:var(--sans);font-size:13.5px;color:var(--ink-soft)}
.seg button.on{background:var(--pine);color:#f3ede1}
/* results */
.summary{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:20px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:11px;padding:15px}
.stat .k{font-size:11.5px;color:var(--ink-soft);letter-spacing:.05em}
.stat .v{font-family:var(--mono);font-size:22px;color:var(--pine);margin-top:4px;font-weight:500}
.tblwrap{overflow-x:auto;border:1px solid var(--line);border-radius:11px;background:var(--card)}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:9px 11px;text-align:right;white-space:nowrap;border-bottom:1px solid var(--line)}
th{background:var(--paper2);font-weight:500;font-size:11.5px;color:var(--ink-soft);letter-spacing:.04em;position:sticky;top:0}
td{font-family:var(--mono);font-variant-numeric:tabular-nums}
td:first-child,th:first-child{text-align:left}
tbody tr:hover{background:rgba(169,121,31,.05)}
.trig{display:inline-block;font-family:var(--sans);font-size:11px;padding:2px 7px;border-radius:5px;margin-left:3px}
.t-cpr{background:#f5e3df;color:var(--sell)} .t-pr{background:#dfeee5;color:var(--buy)} .t-fz{background:#eee7d4;color:var(--gold)}
.pos{color:var(--buy)} .neg{color:var(--sell)}
.placeholder{padding:40px;text-align:center;color:var(--ink-soft);font-size:14px}
/* allocation bars */
.alloc{margin-top:6px}
.alloc-row{display:grid;grid-template-columns:90px 1fr;gap:10px;align-items:center;margin-bottom:10px;font-size:12.5px}
.bar-bg{position:relative;height:22px;background:var(--paper2);border-radius:5px;overflow:hidden}
.bar-cur{position:absolute;inset:0;width:0;background:var(--gold-l);opacity:.55;transition:width .6s}
.bar-tgt{position:absolute;top:0;bottom:0;width:2px;background:var(--pine)}
.holding-row{display:grid;grid-template-columns:1.3fr 1fr .8fr auto;gap:8px;margin-bottom:9px;align-items:center}
.holding-row input{padding:9px 10px;border:1px solid var(--line);border-radius:7px;background:#fff;font-size:13px;width:100%;font-family:var(--mono)}
.holding-row input.nm{font-family:var(--sans)}
.del{background:none;border:none;color:var(--ink-soft);cursor:pointer;font-size:18px;line-height:1;padding:4px 6px}
.del:hover{color:var(--sell)}
/* app page */
.app-hero{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.feat{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:24px}
.feat li{list-style:none;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:15px;font-size:14px}
.feat li b{color:var(--pine);font-family:var(--serif);display:block;margin-bottom:3px;font-size:14.5px}
.appbtn{display:inline-flex;align-items:center;gap:10px;background:var(--ink);color:var(--paper);padding:13px 22px;border-radius:11px;text-decoration:none;font-size:15px;margin-top:24px}
.phone{background:linear-gradient(160deg,var(--pine),var(--pine-d));border-radius:26px;padding:30px;color:#f3ede1;aspect-ratio:9/15;max-width:280px;margin:0 auto;display:flex;flex-direction:column;justify-content:center;box-shadow:0 24px 50px -20px var(--shadow)}
.phone .pv{font-family:var(--mono);font-size:13px;opacity:.7}
.phone .pn{font-family:var(--serif);font-size:34px;margin:6px 0 22px}
.phone .pbar{height:9px;background:rgba(243,237,225,.18);border-radius:5px;margin-bottom:9px;position:relative;overflow:hidden}
.phone .pbar i{position:absolute;inset:0;background:var(--gold-l);border-radius:5px}
/* text page */
.prose{max-width:64ch}
.prose p{margin-bottom:14px;color:var(--ink-soft)}
.prose h2{margin-top:26px}
.prose ul{margin:0 0 14px 20px;color:var(--ink-soft)}
.prose li{margin-bottom:6px}
.disclaimer{font-size:12.5px;color:var(--ink-soft);background:rgba(169,121,31,.07);border-left:3px solid var(--gold);padding:12px 16px;border-radius:0 8px 8px 0;margin-top:14px}
/* footer */
footer{border-top:1px solid var(--line);margin-top:30px;padding:30px 22px;text-align:center;font-size:12.5px;color:var(--ink-soft)}
footer .fl{display:flex;gap:18px;justify-content:center;margin-bottom:12px;flex-wrap:wrap}
footer .fl a:hover{color:var(--pine)}
@media(max-width:760px){
  .grid2,.app-hero,.tools-grid,.feat{grid-template-columns:1fr}
  .summary{grid-template-columns:1fr 1fr}
  .holding-row{grid-template-columns:1fr 1fr;gap:6px}
  .hero:after{font-size:90px}
  .brand{font-size:18px}
}
/* GK：各年報酬率編輯格 */
.summary.s4{grid-template-columns:repeat(4,1fr)}
.returns-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(76px,1fr));gap:8px;margin-top:6px}
.return-cell{display:flex;flex-direction:column;gap:4px}
.return-cell label{font-size:10px;color:var(--ink-soft);text-align:center;letter-spacing:.04em}
.return-cell input{width:100%;padding:8px 6px;border:1px solid var(--line);border-radius:6px;background:#fff;font-family:var(--mono);font-size:13px;text-align:center;color:var(--ink)}
.return-cell input:focus{outline:none;border-color:var(--pine);box-shadow:0 0 0 3px rgba(31,74,60,.1)}
.return-cell input.neg{color:var(--sell)}
.cagr-row{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap;margin:14px 0 4px;padding-top:14px;border-top:1px dashed var(--line)}
.cagr-row .cagr-field{flex:0 0 150px}
.cagr-row .cagr-field label{display:block;font-size:12.5px;color:var(--ink-soft);margin-bottom:5px}
.cagr-row .cagr-field input{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:#fff;font-family:var(--mono);font-size:14px;color:var(--ink)}
.cagr-row .cagr-field input:focus{outline:none;border-color:var(--pine);box-shadow:0 0 0 3px rgba(31,74,60,.1)}
.realized{font-size:12px;color:var(--ink-soft);margin-top:8px}
.realized b{color:var(--pine);font-family:var(--mono)}
.stat .sub{font-family:var(--sans);font-size:11px;color:var(--ink-soft);margin-top:4px}
@media(max-width:760px){ .summary.s4{grid-template-columns:1fr 1fr} }