:root{font-family:PingFang SC,Microsoft YaHei,Noto Sans SC,system-ui,sans-serif;color:#1f2937;background-color:#f1f7ff}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:#f1f7ff}#app{min-height:100vh}.page-shell{min-height:100vh;display:flex;flex-direction:column;background:linear-gradient(180deg,#eff5ff,#f7fbff)}.top-bar{height:52px;background:#2f3542;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;letter-spacing:1px}.container{flex:1;display:flex;align-items:flex-start;justify-content:center;padding:32px 16px 64px}.card{width:100%;max-width:760px;background:#fff;border-radius:24px;box-shadow:0 12px 40px #94a3b840;padding:32px 24px}.section-title{text-align:center;margin-bottom:24px}.section-title h1{margin:0 0 12px;font-size:clamp(20px,2.6vw,28px);color:#1f2937}.section-title .divider{width:72px;height:4px;background:#2d7eff;margin:0 auto;border-radius:99px}.lead{color:#6b7280;line-height:1.8;font-size:clamp(14px,2vw,16px)}.btn{width:100%;border:none;border-radius:14px;padding:14px 20px;font-size:16px;font-weight:600;cursor:pointer;transition:all .2s ease}.btn-primary{background:#2d7eff;color:#fff;margin-top:24px}.btn-primary:hover{background:#1c6be0}.btn-ghost{background:#eaf2ff;color:#2d7eff;margin-top:12px}