:root{--ink:#18231f;--muted:#66736d;--paper:#f4f1e8;--card:#fffdf7;--sage:#436257;--line:#d7d5ca;--red:#a34837;--shadow:0 20px 70px rgba(34,48,42,.1)}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:'IBM Plex Sans SC','Microsoft YaHei',sans-serif;min-height:100vh}.grain{position:fixed;inset:0;opacity:.18;pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.14'/%3E%3C/svg%3E")}header{height:96px;display:flex;align-items:center;justify-content:space-between;max-width:1180px;margin:auto;padding:0 28px}.brand{display:flex;gap:13px;align-items:center;text-decoration:none;color:var(--ink)}.brand i{font:700 22px 'Noto Serif SC';font-style:normal;color:var(--paper);background:var(--ink);width:46px;height:46px;display:grid;place-items:center;border-radius:50% 50% 47% 53%}.brand span{font:700 20px 'Noto Serif SC'}.brand small{display:block;font:400 11px 'IBM Plex Sans SC';letter-spacing:.1em;color:var(--muted);margin-top:2px}.quiet-link{border:0;background:none;color:var(--muted);font-size:13px;text-decoration:none;cursor:pointer}.quiet-link:hover{color:var(--ink)}main{max-width:980px;margin:55px auto;padding:0 28px 80px}.hero{max-width:760px}.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--sage);text-transform:uppercase}.hero h1{font:700 clamp(42px,7vw,78px)/1.12 'Noto Serif SC';margin:20px 0 24px;letter-spacing:-.05em}.hero p{font:400 17px/1.9 'Noto Serif SC';color:var(--muted);max-width:600px}.panel{margin-top:42px;background:rgba(255,253,247,.86);border:1px solid var(--line);border-radius:4px;padding:34px;box-shadow:var(--shadow);backdrop-filter:blur(8px)}.narrow{max-width:570px}.field{margin:0 0 22px}.field label{display:block;font-size:13px;font-weight:600;margin-bottom:9px}.field input,.field textarea,.field select{width:100%;border:1px solid var(--line);background:#fffefb;border-radius:3px;padding:14px 15px;color:var(--ink);font:inherit;outline:none}.field textarea{min-height:190px;resize:vertical;line-height:1.7}.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--sage);box-shadow:0 0 0 3px rgba(67,98,87,.1)}button.primary{border:0;background:var(--ink);color:white;padding:14px 23px;border-radius:3px;font:600 14px inherit;cursor:pointer;transition:.2s}button.primary:hover{background:var(--sage);transform:translateY(-1px)}button.secondary{border:1px solid var(--line);background:transparent;padding:12px 18px;border-radius:3px;cursor:pointer;color:var(--ink)}button.danger{color:var(--red)}.actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.note{font-size:12px;line-height:1.7;color:var(--muted);margin-top:18px}.error{color:var(--red);font-size:13px;margin:12px 0}.receipt{font:700 clamp(24px,5vw,38px) monospace;letter-spacing:.08em;border:1px dashed var(--sage);padding:24px;text-align:center;background:#edf0e9;margin:24px 0}.thread{display:grid;gap:14px;margin:25px 0}.message{padding:18px 20px;border:1px solid var(--line);max-width:82%;line-height:1.7;background:var(--card)}.message.boss{margin-left:auto;background:#e8ede8;border-color:#c6d0ca}.message small{display:block;color:var(--muted);margin-bottom:6px}.status{display:inline-block;font-size:11px;padding:5px 8px;background:#e7ece7;color:var(--sage);border-radius:99px}.inbox{display:grid;grid-template-columns:330px 1fr;gap:22px;min-height:600px}.list,.detail{background:rgba(255,253,247,.88);border:1px solid var(--line)}.list h2,.detail-inner{padding:22px}.letter{padding:17px 20px;border-top:1px solid var(--line);cursor:pointer}.letter:hover,.letter.active{background:#eef0e9}.letter strong{display:block;margin-bottom:6px}.letter small{color:var(--muted)}.detail-inner h1{font:700 30px 'Noto Serif SC'}.hidden{display:none!important}footer{text-align:center;color:var(--muted);font-size:11px;padding:30px}@media(max-width:760px){header{height:80px}.brand small{display:none}main{margin-top:28px}.panel{padding:24px}.inbox{grid-template-columns:1fr}.detail{min-height:400px}.message{max-width:94%}}
