.tt-import{--tti-bg:#f5f7fa;--tti-panel:#fff;--tti-ink:#183046;--tti-muted:#677a90;--tti-line:#dfe7ef;--tti-accent:#087f8c;--tti-soft:#e9f6f7;--tti-warn:#945800;--tti-warn-bg:#fff7e7;--tti-error:#b83939;--tti-error-bg:#fff0ef;color:var(--tti-ink);font:14px/1.55 -apple-system,BlinkMacSystemFont,Segoe UI,Microsoft YaHei,sans-serif;max-width:1480px;margin:0 auto;min-width:0}:root:not([data-theme=day]) .tt-import{--tti-bg:#101b29;--tti-panel:#172636;--tti-ink:#e5edf6;--tti-muted:#a5b6c9;--tti-line:#314559;--tti-accent:#68d0d7;--tti-soft:#203e4b;--tti-warn:#f4cd85;--tti-warn-bg:#3b3324;--tti-error:#ffaeaa;--tti-error-bg:#432c35}.tt-import *{box-sizing:border-box}.tt-import h1,.tt-import h2,.tt-import h3,.tt-import p{margin:0}.tt-import h1{font-size:26px;letter-spacing:-.6px;font-weight:750;line-height:1.4}.tt-import h2{font-size:20px;font-weight:700;line-height:1.45}.tt-import h3{font-size:14px;font-weight:650}.tt-import p{line-height:1.7}.tt-import 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.tti-review-toolbar>label{font-size:0}}@media(max-width:760px){.timetable-import-shell .tti-nav-toggle{display:grid;place-items:center;flex:0 0 40px;width:40px;height:40px;padding:0;border:1px solid var(--qw-line);border-radius:5px;background:var(--qw-surface);color:var(--qw-ink);font-size:21px;cursor:pointer}.timetable-import-shell .quality-backend-topbar .top-left{gap:9px}.timetable-import-shell .quality-backend-topbar .page-title{font-size:12px}.timetable-import-shell .quality-backend-nav{display:none;position:fixed;inset:56px auto 0 0;height:calc(100dvh - 56px);width:min(300px,90vw);padding:18px;z-index:1002;box-shadow:8px 0 30px #0004}.timetable-import-shell.tti-nav-open .quality-backend-nav{display:flex}.timetable-import-shell.tti-nav-open:before{content:"";position:fixed;inset:56px 0 0;background:#06132188;z-index:1001}.timetable-import-shell .quality-backend-nav nav{display:grid;overflow:auto}.timetable-import-shell .quality-backend-nav nav 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