*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--primary: #07C160;--primary-dark: #06AD56;--bg: #F5F5F5;--card-bg: #FFFFFF;--text: #1A1A1A;--text-secondary: #666666;--text-muted: #999999;--border: #E8E8E8;--accent-orange: #FF6B35;--accent-gold: #F5A623;--shadow: 0 2px 12px rgba(0, 0, 0, .08);--radius: 12px;--radius-lg: 16px}html{font-size:16px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}#app{max-width:480px;margin:0 auto;min-height:100vh;background:var(--bg)}.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:2rem;color:var(--text-secondary)}.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;margin-bottom:1rem}@keyframes spin{to{transform:rotate(360deg)}}.loading-screen p{font-size:.95rem}.pay-page{padding:0 16px 32px;min-height:100vh}.header{text-align:center;padding:32px 0 24px}.header-icon{font-size:3rem;margin-bottom:8px}.header-title{font-size:1.5rem;font-weight:700;color:var(--text);margin-bottom:4px}.header-subtitle{font-size:.9rem;color:var(--text-muted)}.section-title{font-size:1.1rem;font-weight:600;color:var(--text);margin-bottom:12px;padding-left:4px}.plans-section{margin-bottom:24px}.plans-grid{display:flex;gap:10px}.plan-card{flex:1;background:var(--card-bg);border-radius:var(--radius);padding:16px 10px;text-align:center;position:relative;border:2px solid var(--border);cursor:pointer;transition:all .2s ease;box-shadow:var(--shadow)}.plan-card:active{transform:scale(.97)}.plan-card.selected{border-color:var(--primary);background:#f0fff5}.plan-card.recommended{border-color:var(--accent-orange)}.plan-card.best{border-color:var(--accent-gold)}.plan-card.recommended.selected,.plan-card.best.selected{border-color:var(--primary)}.plan-badge{position:absolute;top:-10px;left:50%;transform:translate(-50%);font-size:.7rem;font-weight:600;padding:2px 10px;border-radius:10px;white-space:nowrap}.badge-rec{background:#fff0e8;color:var(--accent-orange)}.badge-best{background:#fff8e8;color:#d4920a}.plan-name{font-size:.85rem;font-weight:600;color:var(--text);margin-top:6px;margin-bottom:4px}.plan-days{font-size:.75rem;color:var(--text-muted);margin-bottom:8px}.plan-price{margin-bottom:2px}.price-symbol{font-size:.9rem;font-weight:600;color:var(--text);vertical-align:top}.price-value{font-size:1.8rem;font-weight:700;color:var(--text);line-height:1}.plan-unit{font-size:.7rem;color:var(--text-muted)}.features-section{margin-bottom:24px}.features-list{background:var(--card-bg);border-radius:var(--radius-lg);padding:16px;box-shadow:var(--shadow)}.feature-item{display:flex;align-items:flex-start;gap:12px;padding:10px 0;border-bottom:1px solid var(--border)}.feature-item:last-child{border-bottom:none}.feature-icon{font-size:1.5rem;flex-shrink:0;width:36px;text-align:center;line-height:1.4}.feature-text{flex:1}.feature-title{font-size:.9rem;font-weight:600;color:var(--text);margin-bottom:2px}.feature-desc{font-size:.78rem;color:var(--text-muted);line-height:1.4}.action-area{text-align:center;padding:8px 0 24px}.pay-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;max-width:320px;height:50px;background:var(--primary);color:#fff;font-size:1.1rem;font-weight:600;border:none;border-radius:25px;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 16px #07c16059}.pay-btn:active{background:var(--primary-dark);transform:scale(.98)}.pay-btn.disabled{background:#c8c8c8;box-shadow:none;cursor:not-allowed}.pay-btn.disabled:active{transform:none}.btn-spinner{width:20px;height:20px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite}.action-hint{margin-top:10px;font-size:.85rem;color:var(--text-secondary)}.footer{text-align:center;padding:16px 0;font-size:.78rem;color:var(--text-muted)}.footer p{margin-bottom:2px}.footer-brand{margin-top:4px;opacity:.7}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:24px;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-card{background:#fff;border-radius:var(--radius-lg);padding:32px 24px 24px;text-align:center;max-width:320px;width:100%;box-shadow:0 8px 32px #00000026;animation:slideUp .3s ease}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-icon{font-size:3rem;margin-bottom:12px}.modal-title{font-size:1.2rem;font-weight:700;margin-bottom:8px}.modal-success .modal-title{color:var(--primary)}.modal-fail .modal-title{color:#e74c3c}.modal-desc{font-size:.9rem;color:var(--text-secondary);margin-bottom:20px;line-height:1.5}.modal-btn{display:inline-block;padding:10px 40px;background:var(--primary);color:#fff;font-size:.95rem;font-weight:600;border:none;border-radius:20px;cursor:pointer}.modal-btn:active{background:var(--primary-dark)}@media(min-width:480px){.plans-grid{gap:12px}.plan-card{padding:20px 14px}.price-value{font-size:2rem}.header{padding:40px 0 28px}.header-title{font-size:1.6rem}}@media(min-width:768px){#app{border-left:1px solid var(--border);border-right:1px solid var(--border)}}