:root{--tutor-primary:#0d9488;--tutor-primary-dark:#0f766e;--tutor-primary-light:#14b8a6;--tutor-gradient:linear-gradient(135deg, #0d9488 0%, #14b8a6 100%);--tutor-gradient-soft:linear-gradient(135deg, #f0fdfa 0%, #ccfbf1 100%);--tutor-bg:#f8fafc;--tutor-card:#fff;--tutor-text:#1e293b;--tutor-text-secondary:#64748b;--tutor-text-muted:#94a3b8;--tutor-border:#e2e8f0;--tutor-danger:#ef4444;--tutor-warning:#f59e0b;--tutor-success:#22c55e;--tutor-gold:#f59e0b;--tutor-radius:16px;--tutor-radius-sm:10px;--tutor-shadow:0 2px 12px #0000000f;--tutor-shadow-lg:0 8px 30px #0000001a;--tutor-tabbar-height:64px}.tutor-app{background:var(--tutor-bg);min-height:100vh;color:var(--tutor-text);padding-bottom:calc(var(--tutor-tabbar-height) + env(safe-area-inset-bottom,0px));max-width:480px;margin:0 auto;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;position:relative}.tutor-header{background:var(--tutor-gradient);color:#fff;border-radius:0 0 24px 24px;padding:20px 20px 28px;position:relative;overflow:hidden}.tutor-header:before{content:"";background:#ffffff1a;border-radius:50%;width:160px;height:160px;position:absolute;top:-40px;right:-40px}.tutor-header:after{content:"";background:#ffffff0f;border-radius:50%;width:120px;height:120px;position:absolute;bottom:-60px;left:-20px}.tutor-header h1{z-index:1;margin:0 0 4px;font-size:22px;font-weight:700;position:relative}.tutor-header p{opacity:.9;z-index:1;margin:0;font-size:13px;position:relative}.tutor-search-bar{box-shadow:var(--tutor-shadow-lg);z-index:2;background:#fff;border-radius:12px;align-items:center;gap:8px;margin:-16px 16px 16px;padding:10px 16px;display:flex;position:relative}.tutor-search-bar input{background:0 0;border:none;outline:none;flex:1;font-size:14px}.tutor-search-bar .icon{color:var(--tutor-text-muted);font-size:16px}.tutor-quick-cats{grid-template-columns:repeat(4,1fr);gap:12px;padding:0 16px 20px;display:grid}.tutor-quick-cat{cursor:pointer;flex-direction:column;align-items:center;gap:6px;transition:transform .15s;display:flex}.tutor-quick-cat:active{transform:scale(.95)}.tutor-quick-cat .icon-wrap{background:var(--tutor-gradient-soft);border-radius:14px;justify-content:center;align-items:center;width:48px;height:48px;font-size:22px;display:flex}.tutor-quick-cat span{color:var(--tutor-text-secondary);font-size:12px;font-weight:500}.tutor-section-title{justify-content:space-between;align-items:center;padding:8px 16px 12px;display:flex}.tutor-section-title h2{color:var(--tutor-text);margin:0;font-size:17px;font-weight:700}.tutor-section-title .more{color:var(--tutor-primary);cursor:pointer;font-size:13px;font-weight:500}.tutor-card{background:var(--tutor-card);border-radius:var(--tutor-radius);box-shadow:var(--tutor-shadow);margin:0 16px 12px;padding:16px;transition:transform .15s,box-shadow .15s}.tutor-card:active{transform:scale(.98)}.teacher-card{gap:14px;display:flex}.teacher-card .avatar{background:var(--tutor-gradient);color:#fff;border-radius:16px;flex-shrink:0;justify-content:center;align-items:center;width:64px;height:64px;font-size:24px;font-weight:700;display:flex;overflow:hidden}.teacher-card .avatar img{object-fit:cover;width:100%;height:100%}.teacher-card .info{flex:1;min-width:0}.teacher-card .name-row{align-items:center;gap:8px;margin-bottom:4px;display:flex}.teacher-card .name{color:var(--tutor-text);font-size:16px;font-weight:700}.teacher-card .verified{background:var(--tutor-gradient);color:#fff;border-radius:4px;padding:2px 6px;font-size:10px;font-weight:600}.teacher-card .title{color:var(--tutor-text-secondary);text-overflow:ellipsis;white-space:nowrap;margin-bottom:6px;font-size:12px;overflow:hidden}.teacher-card .tags{flex-wrap:wrap;gap:4px;margin-bottom:8px;display:flex}.teacher-card .tag{color:var(--tutor-primary-dark);background:#f0fdfa;border-radius:6px;padding:2px 8px;font-size:11px;font-weight:500}.teacher-card .bottom-row{justify-content:space-between;align-items:center;display:flex}.teacher-card .rating{color:var(--tutor-gold);align-items:center;gap:4px;font-size:12px;font-weight:600;display:flex}.teacher-card .rating .count{color:var(--tutor-text-muted);font-weight:400}.teacher-card .price{color:var(--tutor-danger);font-size:16px;font-weight:700}.teacher-card .price small{color:var(--tutor-text-muted);font-size:11px;font-weight:400}.demand-card .header{justify-content:space-between;align-items:flex-start;margin-bottom:10px;display:flex}.demand-card .title{color:var(--tutor-text);flex:1;margin-right:10px;font-size:16px;font-weight:700}.demand-card .status-badge{border-radius:20px;flex-shrink:0;padding:3px 10px;font-size:11px;font-weight:600}.demand-card .status-badge.open{color:#16a34a;background:#dcfce7}.demand-card .status-badge.matched{color:#d97706;background:#fef3c7}.demand-card .status-badge.closed{color:#64748b;background:#f1f5f9}.demand-card .meta-row{flex-wrap:wrap;gap:6px;margin-bottom:10px;display:flex}.demand-card .meta-item{color:var(--tutor-text-secondary);background:#f1f5f9;border-radius:6px;padding:3px 10px;font-size:12px;font-weight:500}.demand-card .meta-item.subject{background:var(--tutor-gradient-soft);color:var(--tutor-primary-dark)}.demand-card .desc{color:var(--tutor-text-secondary);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-bottom:10px;font-size:13px;line-height:1.6;display:-webkit-box;overflow:hidden}.demand-card .footer{border-top:1px solid var(--tutor-border);justify-content:space-between;align-items:center;padding-top:10px;display:flex}.demand-card .budget{color:var(--tutor-danger);font-size:15px;font-weight:700}.demand-card .budget small{color:var(--tutor-text-muted);font-size:11px;font-weight:400}.demand-card .city{color:var(--tutor-text-muted);align-items:center;gap:4px;font-size:12px;display:flex}.chip-group{flex-wrap:wrap;gap:8px;display:flex}.chip{border:1.5px solid var(--tutor-border);color:var(--tutor-text-secondary);cursor:pointer;-webkit-user-select:none;user-select:none;background:#fff;border-radius:20px;padding:8px 16px;font-size:13px;font-weight:500;transition:all .15s}.chip:active{transform:scale(.95)}.chip.selected{background:var(--tutor-gradient);color:#fff;border-color:#0000;box-shadow:0 2px 8px #0d94884d}.chip.disabled{opacity:.4;cursor:not-allowed}.tutor-form{padding:16px}.form-section{border-radius:var(--tutor-radius);box-shadow:var(--tutor-shadow);background:#fff;margin-bottom:14px;padding:18px 16px}.form-section-title{color:var(--tutor-text);align-items:center;gap:8px;margin-bottom:14px;font-size:15px;font-weight:700;display:flex}.form-section-title .step{background:var(--tutor-gradient);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-size:12px;font-weight:700;display:flex}.form-label{color:var(--tutor-text);margin-bottom:10px;font-size:13px;font-weight:600;display:block}.form-label .required{color:var(--tutor-danger);margin-left:2px}.form-input{border:1.5px solid var(--tutor-border);box-sizing:border-box;background:#f8fafc;border-radius:10px;outline:none;width:100%;padding:12px 14px;font-size:14px;transition:border-color .15s}.form-input:focus{border-color:var(--tutor-primary);background:#fff}.form-textarea{border:1.5px solid var(--tutor-border);resize:vertical;box-sizing:border-box;background:#f8fafc;border-radius:10px;outline:none;width:100%;min-height:80px;padding:12px 14px;font-family:inherit;font-size:14px}.form-textarea:focus{border-color:var(--tutor-primary);background:#fff}.tutor-btn{cursor:pointer;box-sizing:border-box;border:none;border-radius:12px;justify-content:center;align-items:center;gap:8px;width:100%;padding:14px 24px;font-size:15px;font-weight:600;transition:all .15s;display:flex}.tutor-btn:active{transform:scale(.97)}.tutor-btn.primary{background:var(--tutor-gradient);color:#fff;box-shadow:0 4px 14px #0d948859}.tutor-btn.primary:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}.tutor-btn.outline{color:var(--tutor-primary);border:1.5px solid var(--tutor-primary);background:#fff}.tutor-btn.danger{color:var(--tutor-danger);background:#fef2f2;border:1.5px solid #fecaca}.tutor-btn.small{border-radius:8px;width:auto;padding:8px 16px;font-size:13px}.tutor-tabbar{width:100%;max-width:480px;padding:8px 0 calc(8px + env(safe-area-inset-bottom,0px));z-index:100;background:#fff;border-radius:20px 20px 0 0;justify-content:space-around;display:flex;position:fixed;bottom:0;left:50%;transform:translate(-50%);box-shadow:0 -2px 16px #0000000f}.tutor-tab-item{cursor:pointer;color:var(--tutor-text-muted);flex-direction:column;align-items:center;gap:2px;padding:4px 12px;text-decoration:none;transition:color .15s;display:flex;position:relative}.tutor-tab-item.active{color:var(--tutor-primary)}.tutor-tab-item .icon{font-size:22px;line-height:1}.tutor-tab-item .label{font-size:10px;font-weight:600}.tutor-tab-item .badge{background:var(--tutor-danger);color:#fff;border-radius:8px;justify-content:center;align-items:center;min-width:16px;height:16px;padding:0 4px;font-size:10px;font-weight:700;display:flex;position:absolute;top:0;right:4px}.tutor-empty{text-align:center;flex-direction:column;justify-content:center;align-items:center;padding:60px 20px;display:flex}.tutor-empty .icon{opacity:.3;margin-bottom:16px;font-size:56px}.tutor-empty h3{color:var(--tutor-text-secondary);margin:0 0 8px;font-size:16px;font-weight:600}.tutor-empty p{color:var(--tutor-text-muted);margin:0 0 20px;font-size:13px}.tutor-loading{color:var(--tutor-text-muted);justify-content:center;align-items:center;padding:40px;font-size:14px;display:flex}.tutor-loading .spinner{border:2.5px solid var(--tutor-border);border-top-color:var(--tutor-primary);border-radius:50%;width:24px;height:24px;margin-right:10px;animation:.8s linear infinite tutor-spin}@keyframes tutor-spin{to{transform:rotate(360deg)}}.detail-header{background:var(--tutor-gradient);color:#fff;border-radius:0 0 24px 24px;padding:20px;position:relative}.detail-header .back-btn{cursor:pointer;color:#fff;z-index:2;background:#fff3;border:none;border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;font-size:18px;display:flex;position:absolute;top:16px;left:16px}.detail-header .content{padding-top:32px}.teacher-detail-avatar{background:#ffffff40;border-radius:20px;justify-content:center;align-items:center;width:80px;height:80px;margin-bottom:12px;font-size:32px;font-weight:700;display:flex;overflow:hidden}.teacher-detail-avatar img{object-fit:cover;width:100%;height:100%}.teacher-detail-name{margin-bottom:4px;font-size:22px;font-weight:700}.teacher-detail-title{opacity:.9;margin-bottom:12px;font-size:13px}.teacher-detail-stats{gap:24px;display:flex}.teacher-detail-stat{text-align:center}.teacher-detail-stat .num{font-size:20px;font-weight:700}.teacher-detail-stat .label{opacity:.8;font-size:11px}.info-list{border-radius:var(--tutor-radius);box-shadow:var(--tutor-shadow);background:#fff;margin:14px 16px;overflow:hidden}.info-list-item{border-bottom:1px solid var(--tutor-border);align-items:center;padding:14px 16px;display:flex}.info-list-item:last-child{border-bottom:none}.info-list-item .label{color:var(--tutor-text-secondary);flex-shrink:0;width:80px;font-size:13px}.info-list-item .value{color:var(--tutor-text);flex:1;font-size:14px;font-weight:500}.chat-container{background:var(--tutor-bg);flex-direction:column;max-width:480px;height:100vh;margin:0 auto;display:flex}.chat-header{border-bottom:1px solid var(--tutor-border);z-index:10;background:#fff;align-items:center;gap:12px;padding:14px 16px;display:flex;position:sticky;top:0}.chat-header .back{cursor:pointer;color:var(--tutor-text);justify-content:center;align-items:center;width:32px;height:32px;font-size:20px;display:flex}.chat-header .avatar{background:var(--tutor-gradient);color:#fff;border-radius:12px;justify-content:center;align-items:center;width:40px;height:40px;font-size:16px;font-weight:700;display:flex}.chat-header .info{flex:1}.chat-header .name{color:var(--tutor-text);font-size:15px;font-weight:700}.chat-header .sub{color:var(--tutor-text-muted);font-size:11px}.chat-messages{flex-direction:column;flex:1;gap:12px;padding:16px;display:flex;overflow-y:auto}.chat-msg{gap:8px;max-width:80%;display:flex}.chat-msg.mine{flex-direction:row-reverse;align-self:flex-end}.chat-msg.system{align-self:center;max-width:90%}.chat-msg .avatar{background:var(--tutor-gradient);color:#fff;border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:12px;font-weight:700;display:flex}.chat-msg .bubble{word-break:break-word;border-radius:14px;padding:10px 14px;font-size:14px;line-height:1.5}.chat-msg:not(.mine):not(.system) .bubble{color:var(--tutor-text);box-shadow:var(--tutor-shadow);background:#fff;border-top-left-radius:4px}.chat-msg.mine .bubble{background:var(--tutor-gradient);color:#fff;border-top-right-radius:4px}.chat-msg.system .bubble{color:#92400e;text-align:center;background:#fef3c7;border-radius:8px;font-size:12px}.chat-input-bar{padding:10px 12px calc(10px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--tutor-border);background:#fff;align-items:flex-end;gap:8px;display:flex}.chat-input-bar input{border:1.5px solid var(--tutor-border);background:#f8fafc;border-radius:20px;outline:none;flex:1;padding:10px 14px;font-size:14px}.chat-input-bar input:focus{border-color:var(--tutor-primary);background:#fff}.chat-input-bar .send-btn{background:var(--tutor-gradient);color:#fff;cursor:pointer;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;font-size:16px;display:flex}.chat-quick-replies{flex-wrap:nowrap;gap:6px;padding:8px 12px 0;display:flex;overflow-x:auto}.chat-quick-reply{background:var(--tutor-gradient-soft);color:var(--tutor-primary-dark);cursor:pointer;white-space:nowrap;border:none;border-radius:16px;flex-shrink:0;padding:6px 12px;font-size:12px;font-weight:500}.conv-item{border-bottom:1px solid var(--tutor-border);cursor:pointer;background:#fff;gap:12px;padding:14px 16px;transition:background .15s;display:flex}.conv-item:active{background:#f8fafc}.conv-item .avatar{background:var(--tutor-gradient);color:#fff;border-radius:14px;flex-shrink:0;justify-content:center;align-items:center;width:48px;height:48px;font-size:18px;font-weight:700;display:flex;position:relative}.conv-item .avatar .unread-dot{background:var(--tutor-danger);color:#fff;border-radius:9px;justify-content:center;align-items:center;min-width:18px;height:18px;padding:0 5px;font-size:10px;font-weight:700;display:flex;position:absolute;top:-4px;right:-4px}.conv-item .info{flex:1;min-width:0}.conv-item .top-row{justify-content:space-between;align-items:center;margin-bottom:4px;display:flex}.conv-item .name{color:var(--tutor-text);font-size:15px;font-weight:700}.conv-item .time{color:var(--tutor-text-muted);font-size:11px}.conv-item .last-msg{color:var(--tutor-text-secondary);text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.conv-item .demand-title{color:var(--tutor-primary);text-overflow:ellipsis;white-space:nowrap;margin-top:2px;font-size:11px;overflow:hidden}.pay-summary{border-radius:var(--tutor-radius);text-align:center;box-shadow:var(--tutor-shadow);background:#fff;margin:16px;padding:20px}.pay-summary .amount{color:var(--tutor-danger);margin:8px 0;font-size:36px;font-weight:800}.pay-summary .amount small{font-size:16px;font-weight:500}.pay-summary .label{color:var(--tutor-text-secondary);font-size:13px}.pay-methods{border-radius:var(--tutor-radius);box-shadow:var(--tutor-shadow);background:#fff;margin:0 16px 16px;overflow:hidden}.pay-method{border-bottom:1px solid var(--tutor-border);cursor:pointer;align-items:center;gap:12px;padding:16px;display:flex}.pay-method:last-child{border-bottom:none}.pay-method .icon{border-radius:10px;justify-content:center;align-items:center;width:36px;height:36px;font-size:20px;display:flex}.pay-method .icon.wechat{color:#16a34a;background:#dcfce7}.pay-method .icon.alipay{color:#2563eb;background:#dbeafe}.pay-method .info{flex:1}.pay-method .name{color:var(--tutor-text);font-size:15px;font-weight:600}.pay-method .desc{color:var(--tutor-text-muted);font-size:11px}.pay-method .radio{border:2px solid var(--tutor-border);border-radius:50%;justify-content:center;align-items:center;width:22px;height:22px;display:flex}.pay-method.selected .radio{border-color:var(--tutor-primary)}.pay-method.selected .radio:after{content:"";background:var(--tutor-gradient);border-radius:50%;width:12px;height:12px}.contact-locked{border-radius:var(--tutor-radius);background:linear-gradient(135deg,#fef3c7 0%,#fde68a 100%);align-items:center;gap:12px;margin:0 16px 16px;padding:16px;display:flex}.contact-locked .icon{font-size:28px}.contact-locked .text{flex:1}.contact-locked .text h4{color:#92400e;margin:0 0 2px;font-size:14px;font-weight:700}.contact-locked .text p{color:#a16207;margin:0;font-size:12px}.contact-unlocked{border-radius:var(--tutor-radius);background:linear-gradient(135deg,#dcfce7 0%,#bbf7d0 100%);margin:0 16px 16px;padding:16px}.contact-unlocked .title{color:#166534;align-items:center;gap:6px;margin-bottom:10px;font-size:13px;font-weight:700;display:flex}.contact-unlocked .item{color:#14532d;align-items:center;gap:8px;padding:8px 0;font-size:14px;font-weight:500;display:flex}.filter-bar{border-bottom:1px solid var(--tutor-border);z-index:5;background:#fff;gap:8px;padding:12px 16px;display:flex;position:sticky;top:0;overflow-x:auto}.filter-chip{color:var(--tutor-text-secondary);cursor:pointer;white-space:nowrap;background:#f1f5f9;border:none;border-radius:16px;flex-shrink:0;padding:6px 14px;font-size:12px;font-weight:500}.filter-chip.active{background:var(--tutor-gradient);color:#fff}.fab{bottom:calc(var(--tutor-tabbar-height) + 20px);background:var(--tutor-gradient);color:#fff;cursor:pointer;z-index:50;border:none;border-radius:50%;justify-content:center;align-items:center;width:56px;height:56px;font-size:24px;transition:transform .15s;display:flex;position:fixed;right:calc(50% - 224px);box-shadow:0 6px 20px #0d948866}.fab:active{transform:scale(.9)}@media (max-width:480px){.fab{right:16px}}.review-card{border-radius:var(--tutor-radius-sm);box-shadow:var(--tutor-shadow);background:#fff;margin-bottom:10px;padding:14px}.review-card .header{align-items:center;gap:10px;margin-bottom:8px;display:flex}.review-card .avatar{background:var(--tutor-gradient-soft);width:36px;height:36px;color:var(--tutor-primary-dark);border-radius:10px;justify-content:center;align-items:center;font-size:14px;font-weight:700;display:flex}.review-card .name{color:var(--tutor-text);font-size:13px;font-weight:600}.review-card .rating{color:var(--tutor-gold);font-size:12px}.review-card .content{color:var(--tutor-text-secondary);font-size:13px;line-height:1.6}.review-card .time{color:var(--tutor-text-muted);margin-top:6px;font-size:11px}.tutor-toast{color:#fff;z-index:1000;text-align:center;background:#000c;border-radius:10px;max-width:80%;padding:12px 24px;font-size:14px;animation:.2s tutor-fade-in;position:fixed;top:50%;left:50%;transform:translate(-50%,-50%)}@keyframes tutor-fade-in{0%{opacity:0;transform:translate(-50%,-40%)}to{opacity:1;transform:translate(-50%,-50%)}}.price-tag{align-items:baseline;gap:2px;display:inline-flex}.price-tag .amount{color:var(--tutor-danger);font-size:18px;font-weight:800}.price-tag .unit{color:var(--tutor-text-muted);font-size:11px;font-weight:400}.tag-row{flex-wrap:wrap;gap:6px;display:flex}.tag{color:var(--tutor-text-secondary);background:#f1f5f9;border-radius:6px;padding:3px 8px;font-size:11px;font-weight:500}.tag.primary{background:var(--tutor-gradient-soft);color:var(--tutor-primary-dark)}.tag.gold{color:#92400e;background:#fef3c7}