:root{--crim1:#7a0e0e;--crim2:#b3121b;--ink:#121212;--navy:#1b2340;--gold:#c9a227;--paper:#f3ead8;--acc:#c9a227}
*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,"Segoe UI",Roboto,"Noto Sans TC",sans-serif;color:var(--paper);
background:radial-gradient(ellipse at 20% 0%,var(--crim2),var(--crim1) 45%,#3d0707 75%,var(--ink));min-height:100vh}
#loader{position:fixed;inset:0;background:var(--ink);display:grid;place-items:center;z-index:9;transition:opacity .6s}#loader.done{opacity:0;pointer-events:none}
#loader .taiji{width:80px;animation:spin 1.4s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}
.hero{position:relative;padding:40px 6vw 0;overflow:hidden}.mountains{position:absolute;left:0;bottom:30px;width:100%;height:170px}
.cloud{animation:drift 18s ease-in-out infinite alternate}@keyframes drift{to{transform:translateX(40px)}}
.hero-in{position:relative;display:flex;gap:26px;align-items:center}.emblem{position:relative;flex:none;width:104px;height:104px}
.emblem .taiji{width:96px}.spin{animation:spin 24s linear infinite}.seal{position:absolute;width:44px;right:-10px;bottom:-8px;transform:rotate(-6deg);filter:drop-shadow(0 2px 3px rgba(0,0,0,.4))}
h1{margin:.2em 0;font-family:Georgia,"Noto Serif TC",serif;font-size:clamp(22px,3.2vw,38px);line-height:1.15;text-shadow:0 2px 0 rgba(0,0,0,.3)}
.tag{color:var(--acc);letter-spacing:.12em;font-size:12px;font-weight:700;margin:0}.sub{opacity:.9;max-width:900px}.links a{color:var(--gold);font-weight:600}
.brush{position:relative;display:block;width:100%;height:40px;margin-top:22px}
.trigram-div{display:flex;align-items:center;justify-content:center;gap:16px;margin:6px 6vw 16px;color:var(--gold);font-size:13px;letter-spacing:.2em}
.trigram-div svg{width:36px;height:30px}.trigram-div span{white-space:nowrap}
.warn{margin:0 6vw 18px;padding:12px 16px;border-left:5px solid var(--gold);background:var(--navy);border-radius:6px;font-size:14px;line-height:1.5}
main{display:grid;grid-template-columns:1fr 1fr;gap:18px;padding:0 6vw 30px}
.card{background:var(--paper);color:var(--ink);border-radius:10px;padding:18px 20px;border-top:4px solid var(--acc);box-shadow:0 10px 28px rgba(0,0,0,.35)}
.wide{grid-column:1/-1}h2{font-family:Georgia,"Noto Serif TC",serif;font-size:18px;margin:0 0 12px;color:var(--crim1)}h2 small{font-family:Inter,sans-serif;font-size:12px;color:#5a4a3a;font-weight:400}
canvas{width:100%;height:auto;background:#fbf6ec;border:1px solid #e2d6bd;border-radius:6px}
.legend{font-size:13px;margin-top:8px}.l{display:inline-block;width:18px;height:3px;margin:0 6px 3px 14px;vertical-align:middle}.l.a{background:var(--ink)}.l.m{background:var(--crim2)}.l.p{background:var(--gold)}
label{display:block;margin:12px 0;font-size:14px}input[type=range]{width:100%;accent-color:var(--crim2)}
.out{display:flex;gap:14px;margin-top:10px}.out div{flex:1;background:var(--ink);color:var(--paper);border-radius:8px;padding:12px;border-bottom:3px solid var(--acc)}
.out span{font-size:12px;opacity:.8;display:block}.out strong{font-size:28px;color:var(--gold)}.small{font-size:12.5px;color:#4a3c30}
table{width:100%;border-collapse:collapse}td,th{padding:7px;border-bottom:1px solid #e2d6bd;text-align:right}td:first-child,th:first-child{text-align:left}th{color:var(--navy)}
footer{padding:20px 6vw 40px;font-size:12px;opacity:.8}
@media(max-width:800px){main{grid-template-columns:1fr}.hero-in{flex-direction:column;align-items:flex-start}.mountains{height:110px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important}}