/* 通用：让正文更清晰 */
:root{--brand1:#ff8a5c;--brand2:#ff5b39;--line:rgba(0,0,0,.08);--muted:#6b7280;font-synthesis-weight:none}
html,body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Segoe UI",sans-serif;color:#111;line-height:1.75}
a{color:#0ea5e9;text-decoration:none} a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.35}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;height:42px;padding:0 14px;border-radius:12px;border:1px solid transparent;cursor:pointer;font-weight:700;transition:.18s ease}
.btn-primary{color:#fff;background-image:linear-gradient(135deg,var(--brand1),var(--brand2));box-shadow:0 12px 26px -14px rgba(255,138,92,.28)}
.btn-primary:hover{transform:translateY(-1px)}
.btn-ghost{background:#fff;color:#111;border-color:var(--line)}
.btn-ghost:hover{box-shadow:0 8px 20px -12px rgba(0,0,0,.18)}
.btn-sm{height:36px;padding:0 12px;border-radius:10px;font-weight:600}
.btn-lg{height:48px;padding:0 18px;border-radius:14px;font-size:16px}

/* 卡片/表格、小提示等（可选） */
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px}
.muted{color:var(--muted)}