:root{--bg: #f5f6fa;--surface: #ffffff;--border: #e5e7eb;--text: #1f2937;--text-secondary: #6b7280;--primary: #4f46e5;--primary-hover: #4338ca;--shadow: 0 1px 3px rgba(0, 0, 0, .08);--radius: 12px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;-webkit-font-smoothing:antialiased}#root{min-height:100vh}.flights-app{min-height:100vh;display:flex;flex-direction:column}.flights-header{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.flights-brand{display:flex;align-items:center;gap:8px;font-size:18px;font-weight:700;color:var(--primary)}.flights-ver{font-size:12px;font-weight:500;color:var(--text-secondary);background:#eef2ff;padding:1px 7px;border-radius:10px}.flights-tag{font-size:13px;color:var(--text-secondary)}.flights-main{flex:1;width:100%;max-width:820px;margin:0 auto;padding:calc(16px + env(safe-area-inset-top)) 16px 24px}.flights-footer{text-align:center;font-size:12px;color:#9ca3af;padding:18px 16px calc(18px + env(safe-area-inset-bottom))}.flights-history{display:flex;align-items:flex-start;gap:8px;flex-wrap:wrap;margin-top:10px}.fh-label{font-size:12px;color:var(--text-secondary);white-space:nowrap;padding-top:5px}.fh-chips{display:flex;flex-wrap:wrap;gap:6px;align-items:center}.fh-chip{display:inline-flex;align-items:center;gap:4px;font-size:13px;padding:4px 8px;border-radius:999px;background:#eef2f7;border:1px solid var(--border);cursor:pointer;color:var(--text);transition:border-color .15s,background .15s}.fh-chip:hover{border-color:#2563eb;background:#e8effd}.fh-del{border:none;background:transparent;cursor:pointer;color:var(--text-secondary);font-size:14px;line-height:1;padding:0 2px}.fh-del:hover{color:#dc2626}.fh-clear{border:none;background:transparent;cursor:pointer;color:var(--text-secondary);font-size:12px;text-decoration:underline;padding:4px 2px}.fh-clear:hover{color:#2563eb}.flights-title{font-size:24px;margin:8px 0 4px;color:var(--text)}.flights-sub{font-size:14px;color:var(--text-secondary);margin:0 0 18px;line-height:1.6}.flights-form{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:16px}.flights-row{display:flex;gap:12px;align-items:flex-end}.flights-field{flex:1;display:flex;flex-direction:column;gap:6px;min-width:0}.flights-field label{font-size:13px;color:var(--text-secondary);font-weight:500}.flights-field input{width:100%;padding:11px 12px;border:1px solid var(--border);border-radius:9px;font-size:15px;outline:none;transition:border-color .2s;background:#fff;color:var(--text)}.flights-field input:focus{border-color:var(--primary)}.flights-swap{padding:0 6px 11px;background:none;border:none;color:var(--primary);font-size:20px;cursor:pointer}.flights-segment{display:flex;gap:6px;flex-wrap:wrap}.seg-btn{flex:1;min-width:60px;padding:10px 8px;background:#f3f4f6;border:1px solid var(--border);border-radius:9px;font-size:14px;color:var(--text-secondary);transition:all .15s;cursor:pointer}.seg-btn:hover{background:#e9e9ff}.seg-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.flights-submit{display:flex;align-items:center;justify-content:center;gap:8px;padding:13px;background:var(--primary);color:#fff;border:none;border-radius:11px;font-size:16px;font-weight:600;transition:background .2s;margin-top:4px;cursor:pointer}.flights-submit:hover{background:var(--primary-hover)}.flights-submit:disabled{opacity:.7;cursor:default}.flights-error{margin-top:12px;padding:10px 14px;background:#fef2f2;color:#dc2626;border-radius:9px;font-size:14px}.flights-result{margin-top:22px}.flights-summary{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:12px}.sum-item{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:12px 16px;display:flex;flex-direction:column;min-width:110px;flex:1}.sum-item.best{background:linear-gradient(135deg,#4f46e5,#7c3aed);border-color:transparent;color:#fff}.sum-label{font-size:12px;opacity:.85}.sum-value{font-size:22px;font-weight:700;margin-top:2px}.sum-meta{font-size:12px;opacity:.8;margin-top:2px}.mock-badge{align-items:center;justify-content:center;background:#fff7ed;border-color:#fed7aa;color:#c2410c;font-size:13px;font-weight:600;min-width:90px;flex:0 0 auto}.real-badge{align-items:center;justify-content:center;background:#ecfdf5;border-color:#a7f3d0;color:#047857;font-size:13px;font-weight:600;min-width:90px;flex:0 0 auto}.flights-hint{display:flex;align-items:center;gap:6px;font-size:13px;color:#b45309;background:#fff7ed;border:1px solid #fed7aa;border-radius:9px;padding:9px 12px;margin:0 0 14px}.flights-list{display:flex;flex-direction:column;gap:10px}.flight-card{display:grid;grid-template-columns:48px 84px 1fr auto;gap:14px;align-items:center;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px 16px;transition:box-shadow .15s,transform .15s}.flight-card:hover{box-shadow:var(--shadow);transform:translateY(-1px)}.flight-card.top{border-color:#c4b5fd;background:linear-gradient(135deg,#f5f3ff,#fff);box-shadow:0 4px 14px #7c3aed1f}.flight-rank{font-size:16px;font-weight:700;color:var(--primary);text-align:center;display:flex;align-items:center;justify-content:center}.flight-date .fdate{font-size:15px;font-weight:600}.flight-date .fweek{font-size:12px;color:var(--text-secondary)}.flight-route .f-times{display:flex;align-items:center;gap:8px;font-size:15px}.flight-route .f-arrow{color:var(--primary)}.flight-route .f-dur{display:flex;align-items:center;gap:4px;font-size:12px;color:var(--text-secondary);margin-top:2px}.flight-airline .fa-name{font-size:14px;font-weight:500}.flight-airline .fa-no{font-size:12px;color:var(--text-secondary)}.flight-price{text-align:right}.fp-discount{display:inline-flex;align-items:center;font-size:12px;color:#b45309;background:#fef3c7;padding:2px 8px;border-radius:10px;margin-bottom:4px}.fp-book{display:inline-block;margin-top:6px;font-size:12px;font-weight:600;color:#fff;background:#f97316;padding:4px 10px;border-radius:8px;text-decoration:none;transition:opacity .15s ease}.fp-book:hover{opacity:.88}.fp-value{font-size:20px;font-weight:700;color:#dc2626}.fp-round{font-size:12px;color:var(--text-secondary);margin-top:2px}.fp-verify-btn{display:inline-block;margin-top:6px;font-size:11px;font-weight:600;color:#0369a1;background:#e0f2fe;border:1px solid #bae6fd;padding:3px 9px;border-radius:8px;cursor:pointer;transition:background .15s ease}.fp-verify-btn:hover{background:#bae6fd}.fp-verify-btn:disabled{opacity:.6;cursor:default}.fp-verify{font-size:11px;margin-top:4px;line-height:1.4}.fp-verify.loading{color:#64748b}.fp-verify.ok{color:#16a34a}.fp-verify.ok.changed{color:#dc2626}.fp-verify.ok.changed s{color:#9ca3af}.fp-verify.ok.changed b{font-size:13px}.fp-verify.soldout{color:#b45309}.fp-verify.err{color:#dc2626}.fp-verify-note{color:#b45309;margin-bottom:2px}.fp-verify-fno{color:#64748b;font-weight:400}.fp-ret{color:#888}.flight-legs{display:flex;flex-direction:column;gap:8px;min-width:0}.flight-leg{display:flex;align-items:flex-start;flex-wrap:wrap;gap:8px;font-size:14px;min-width:0}.flight-leg.ret{padding-top:8px;border-top:1px dashed var(--border)}.leg-tag{flex:0 0 auto;font-size:11px;font-weight:700;color:#fff;background:var(--primary);padding:2px 7px;border-radius:8px}.leg-tag.ret{background:#f97316}.leg-air{flex:0 0 auto;font-weight:600}.leg-route{display:inline-flex;align-items:center;gap:5px;color:var(--text);min-width:0}.leg-route .f-arrow{color:var(--primary)}.leg-meta{font-size:12px;color:var(--text-secondary)}.leg-body{display:flex;flex-direction:column;gap:4px;min-width:0}.leg-seg{display:flex;align-items:center;flex-wrap:wrap;gap:8px}.leg-transfer{font-size:11px;font-weight:700;color:#f97316;background:#fff3e8;padding:1px 6px;border-radius:6px}.leg-stops{font-size:11px;font-weight:700;color:#f97316}.flights-ai{background:linear-gradient(135deg,#7c5cff1f,#38bdf81a);border:1px solid rgba(124,92,255,.35);border-radius:14px;padding:14px;margin-bottom:16px}.ai-head{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary);margin-bottom:10px}.ai-dot{flex:0 0 auto;font-size:11px;font-weight:800;color:#fff;background:linear-gradient(135deg,#7c5cff,#38bdf8);padding:2px 8px;border-radius:8px}.ai-row{display:flex;gap:8px;align-items:stretch}.ai-input{flex:1 1 auto;resize:none;border:1px solid var(--border);border-radius:10px;padding:8px 10px;font-size:14px;font-family:inherit;background:var(--bg);color:var(--text);line-height:1.5}.ai-input:focus{outline:none;border-color:var(--primary)}.ai-send{flex:0 0 auto;border:none;border-radius:10px;padding:0 16px;font-weight:700;font-size:14px;color:#fff;background:linear-gradient(135deg,#7c5cff,#38bdf8);cursor:pointer}.ai-send:disabled{opacity:.6;cursor:not-allowed}.ai-note{margin-top:8px;font-size:13px;color:#16a34a}.ai-err{margin-top:8px;font-size:13px;color:#dc2626}.flights-stepper{display:inline-flex;align-items:center;gap:10px}.step-btn{width:30px;height:30px;border-radius:8px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:18px;line-height:1;cursor:pointer}.step-btn:hover{border-color:var(--primary)}.step-val{min-width:22px;text-align:center;font-weight:700;font-size:15px}.step-unit{font-size:13px;color:var(--text-secondary)}.fp-book-official{display:inline-block;margin-left:8px;font-size:12px;color:var(--text-secondary);text-decoration:underline}.flights-empty{margin:48px auto;text-align:center;color:#c4b5fd;display:flex;flex-direction:column;align-items:center;gap:14px}.flights-empty p{font-size:14px;color:var(--text-secondary);max-width:420px;line-height:1.7;margin:0}@media(max-width:640px){.flights-row{flex-direction:column;align-items:stretch}.flights-swap{display:none}.flight-card{grid-template-columns:40px 64px 1fr;grid-template-areas:"rank date price" "legs legs legs";gap:8px}.flight-rank{grid-area:rank}.flight-date{grid-area:date}.flight-price{grid-area:price;text-align:right}.flight-legs{grid-area:legs}.sum-item{min-width:calc(50% - 5px);flex:1 1 calc(50% - 5px)}.mock-badge{flex:0 0 auto;width:100%}}.mode-tabs{display:flex;gap:8px;margin:4px 0 18px;background:#eef0f6;padding:4px;border-radius:12px}.mode-tab{flex:1;padding:10px;border:none;background:transparent;border-radius:9px;font-size:14px;font-weight:600;color:var(--text-secondary);cursor:pointer;transition:all .15s}.mode-tab.active{background:var(--surface);color:var(--primary);box-shadow:var(--shadow)}.split-wrap{margin-top:4px}.split-desc{font-size:13px;color:var(--text-secondary);background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:10px 14px;margin:0 0 16px;line-height:1.6}.split-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.split-col{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:12px}.split-col-head{display:flex;align-items:center;gap:8px}.split-badge{font-size:12px;font-weight:700;color:#fff;background:var(--primary);padding:3px 10px;border-radius:8px}.split-badge.back{background:#f97316}.split-route{font-size:14px;font-weight:600;color:var(--text)}.split-list{display:flex;flex-direction:column;gap:8px;margin-top:4px}.split-card{position:relative;border:1px solid var(--border);border-radius:11px;padding:11px 12px;cursor:pointer;transition:border-color .15s,box-shadow .15s;background:#fcfcfd}.split-card:hover{border-color:var(--primary)}.split-card.selected{border-color:var(--primary);background:#eef2ff;box-shadow:0 2px 10px #4f46e524}.split-card-main{display:flex;align-items:center;justify-content:space-between;gap:10px}.split-date{font-size:15px;font-weight:700}.split-week{font-size:12px;color:var(--text-secondary);font-weight:400;margin-left:4px}.split-route-sm{flex:1;font-size:12px;color:var(--text-secondary);min-width:0;display:flex;flex-direction:column;gap:4px}.split-leg{display:flex;align-items:center;flex-wrap:wrap;gap:4px;line-height:1.4}.split-transfer{font-size:11px;font-weight:700;color:#f97316;background:#fff3e8;padding:1px 6px;border-radius:6px}.split-stops{font-size:11px;font-weight:700;color:#f97316}.split-price{font-size:18px;font-weight:700;color:#dc2626;white-space:nowrap}.split-price-unit{font-size:11px;margin-left:1px}.split-card-actions{display:flex;align-items:center;gap:8px;margin-top:7px}.split-picked{position:absolute;top:8px;right:10px;font-size:11px;font-weight:700;color:var(--primary);background:#e0e7ff;padding:1px 7px;border-radius:8px}.split-empty{text-align:center;font-size:13px;color:#9ca3af;padding:18px 0;border:1px dashed var(--border);border-radius:10px}.split-total{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:12px;margin:18px 0 12px;background:linear-gradient(135deg,#4f46e5,#7c3aed);border-radius:16px;padding:16px 20px;color:#fff}.st-item{display:flex;flex-direction:column;align-items:center;min-width:90px}.st-label{font-size:12px;opacity:.85}.st-val{font-size:24px;font-weight:800;margin-top:2px}.st-plus,.st-eq{font-size:22px;font-weight:700;opacity:.8}.st-item.total{background:#ffffff29;border-radius:12px;padding:8px 16px}@media(max-width:640px){.split-grid{grid-template-columns:1fr}}