:root{--text: #333;--text-light: #666;--text-muted: #999;--border: #e8e8e8;--bg: #fff;--accent: #2d8cf0;--max: 980px;--font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:var(--font);font-size:14px;color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{display:block}.header{padding:24px 20px 0;text-align:center}.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:600;color:var(--text)}.hero{padding:36px 20px 48px;text-align:center}.download-row{display:flex;flex-wrap:wrap;justify-content:center;gap:16px}.download-btn{display:inline-flex;align-items:center;gap:10px;min-width:180px;padding:12px 24px;border:1px solid var(--border);border-radius:6px;background:#fafafa;color:var(--text-light);cursor:not-allowed;transition:border-color .2s,background .2s}.download-icon{display:flex;color:var(--text-muted)}.download-text{font-size:15px}.coming-soon{margin:14px 0 0;color:var(--text-muted);font-size:13px}.screenshots{display:flex;flex-wrap:wrap;justify-content:center;gap:32px;margin-top:48px}.phone{width:220px;padding:10px;border-radius:28px;background:#f5f5f5;border:1px solid var(--border);box-shadow:0 8px 32px #0000000f}.phone-inner{min-height:380px;padding:28px 20px;border-radius:20px;background:#fff;text-align:left}.mock-title{margin:0 0 20px;font-size:16px;font-weight:600;color:var(--text)}.mock-row{display:flex;justify-content:space-between;padding:14px 0;border-bottom:1px solid #f0f0f0;color:var(--text-light);font-size:14px}.mock-row strong{color:var(--accent);font-weight:600}.mock-word{margin:48px 0 8px;font-size:28px;font-weight:700;color:var(--text)}.mock-ipa{margin:0 0 16px;color:var(--text-muted);font-size:14px}.mock-meaning{margin:0;color:var(--text-light);font-size:15px}.features{display:grid;grid-template-columns:repeat(4,1fr);gap:0;max-width:var(--max);margin:0 auto;padding:48px 20px 64px;border-top:1px solid var(--border)}.feature{padding:0 24px;text-align:center}.feature:not(:last-child){border-right:1px solid var(--border)}.feature h2{margin:0 0 12px;font-size:16px;font-weight:600;color:var(--text)}.feature p{margin:0;color:var(--text-light);font-size:13px;line-height:1.7}.footer{padding:32px 20px 40px;text-align:center;border-top:1px solid var(--border);color:var(--text-muted);font-size:12px;line-height:2}.footer a{color:var(--text-light)}.footer-sep{margin:0 8px;color:#ddd}.footer a:hover{color:var(--accent)}.footer-copy{margin:8px 0 0}@media(max-width:768px){.features{grid-template-columns:1fr 1fr;gap:32px 0}.feature{border-right:none!important;padding:0 16px}.feature:nth-child(odd){border-right:1px solid var(--border)}}@media(max-width:480px){.features{grid-template-columns:1fr}.feature:nth-child(odd){border-right:none}.phone{width:200px}.phone-inner{min-height:340px}}