:root{color-scheme:light;--ink:#172c35;--teal:#166969;--muted:#536b72;--line:#d5e1dc;--paper:#f4f7f2;--gold:#bc8440}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,'Microsoft JhengHei',sans-serif;line-height:1.75}header{background:#fff;border-bottom:1px solid var(--line);padding:18px max(24px,calc((100vw - 1100px)/2));display:flex;align-items:center;justify-content:space-between;gap:20px}header strong{color:var(--teal)}nav{display:flex;gap:18px;flex-wrap:wrap}a{color:var(--teal);text-underline-offset:4px}main{max-width:1100px;margin:auto;padding:32px 24px 64px}h1{font-size:clamp(30px,5vw,52px);line-height:1.3;letter-spacing:-.04em;max-width:820px}h2{font-size:25px;margin:0 0 14px}h3{margin:0 0 10px}p{margin:0 0 18px}.hero{padding:36px 0 40px}.eyebrow{color:var(--teal);letter-spacing:.12em;font-weight:700}.lede{max-width:750px;font-size:20px;color:var(--muted)}.tag{display:inline-block;background:#dcece4;border-radius:20px;padding:4px 14px;font-size:14px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.card{background:white;border:1px solid var(--line);border-radius:14px;padding:24px;margin:22px 0}.grid .card{margin:0}.note{border-left:4px solid var(--gold);padding:14px 20px;background:#fff5e6;margin:20px 0}form{display:grid;gap:16px;max-width:650px}label{display:grid;gap:5px;font-weight:600}input,select,textarea{font:inherit;background:#fff;border:1px solid #9fb5b1;border-radius:6px;padding:10px;color:var(--ink);min-width:0}textarea{min-height:100px;width:100%}button,.button{font:inherit;cursor:pointer;background:var(--teal);color:#fff;border:0;border-radius:6px;padding:11px 20px;display:inline-block;text-decoration:none}button.secondary{background:#e1ebe5;color:var(--ink)}button:disabled{opacity:.55;cursor:wait}input:focus,textarea:focus,select:focus,button:focus,a:focus{outline:3px solid var(--gold);outline-offset:3px}.check{display:flex;align-items:flex-start;gap:8px;font-size:14px}.check input{margin-top:8px}.status{min-height:28px;color:var(--teal)}.status.error{color:#a52929}.honeypot{display:none}.filters{display:flex;gap:14px;flex-wrap:wrap;align-items:end}.filters label{flex:1}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;white-space:nowrap}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line)}th{font-size:14px;color:var(--muted)}.chart{width:100%;height:260px}footer{max-width:1100px;margin:auto;padding:24px;color:var(--muted)}.lesson{border-top:1px solid var(--line);padding:22px 0}.small{font-size:14px;color:var(--muted);overflow-wrap:anywhere}.actions{display:flex;gap:10px;flex-wrap:wrap}.user-row{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:12px;gap:10px}.inquiry{border-top:1px solid var(--line);padding:20px 0}.inquiry select{width:100%}.inquiry p{overflow-wrap:anywhere}@media(max-width:700px){.grid{grid-template-columns:1fr}header{align-items:flex-start;flex-direction:column;padding:16px 24px}main{padding:20px 18px 40px}.hero{padding:18px 0}.card{padding:20px}.filters{flex-direction:column;align-items:stretch}.user-row{align-items:flex-start;flex-direction:column}}