:root{--ink:#2b3a42;--ink-light:#5c6b73;--paper:#f7f5ef;--paper-deep:#efece2;--green:#4a7a8c;--green-light:#c5d8df;--accent:#b03a2e;--radius:16px;--shadow:0 4px 20px #2b3a4214}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased;font-family:PingFang SC,Noto Sans SC,Microsoft YaHei,sans-serif}button{cursor:pointer;background:0 0;border:none;font-family:inherit}input,textarea{font-family:inherit}.card{border-radius:var(--radius);box-shadow:var(--shadow);background:#fff;padding:20px}.btn{background:var(--green);color:#fff;border-radius:999px;justify-content:center;align-items:center;gap:6px;padding:10px 22px;font-size:16px;font-weight:600;transition:all .2s;display:inline-flex}.btn:hover{opacity:.88;transform:translateY(-1px)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-ghost{color:var(--ink);border:1.5px solid var(--green-light);background:0 0}.btn-accent{background:var(--accent)}.section-title{letter-spacing:1px;margin-bottom:16px;font-size:22px;font-weight:700}.text-light{color:var(--ink-light)}.muted{color:var(--ink-light);font-size:14px}