.tt-container { max-width: 1280px; }
  .tt-work { display: grid; grid-template-columns: minmax(0, 420px) minmax(0, 1fr); gap: 28px; align-items: start; }
  .tt-work > * { min-width: 0; }
  @media (max-width: 1000px) { .tt-work { grid-template-columns: 1fr; } }
  .tt-head h1 { margin-bottom: 6px; }
  #tool-timetable [hidden] { display: none !important; }
  #tool-timetable button { min-width: 0; margin: 0; transform: none; }
  .tt-tabs { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 4px; padding: 4px; margin: 0 0 12px; border: 1px solid var(--border); border-radius: 14px; background: var(--card); }
  #tool-timetable .tt-tab { display: flex; flex-direction: column; align-items: center; gap: 3px; padding: 8px 2px 7px; border: 0; border-radius: 10px; background: transparent; color: var(--muted); font-size: .74rem; font-weight: 700; box-shadow: none; cursor: pointer; transition: background .15s, color .15s; }
  #tool-timetable .tt-tab svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
  #tool-timetable .tt-tab:hover { color: var(--text); background: color-mix(in srgb, var(--text) 6%, transparent); }
  #tool-timetable .tt-tab[aria-selected="true"] { color: var(--text); background: color-mix(in srgb, var(--accent) 18%, transparent); }
  .tt-panel { padding: 14px; border: 1px solid var(--border); border-radius: 14px; background: var(--card); animation: ttIn .18s ease; }
  @keyframes ttIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
  .tt-sec { margin: 0 0 16px; } .tt-sec:last-child { margin-bottom: 0; }
  .tt-lbl { font-size: .82rem; font-weight: 700; color: var(--muted); margin: 0 0 7px; text-transform: uppercase; letter-spacing: .04em; }
  .tt-hint { margin: -2px 0 10px; color: var(--muted); font-size: .85rem; line-height: 1.45; }
  .tt-row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 14px; align-items: end; }
  .tt-stack { display: grid; gap: 12px; }
  @media (max-width: 520px) { .tt-row2 { grid-template-columns: 1fr; } }
  .tt-tpls { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
  #tool-timetable .tt-tpl { display: block; padding: 6px; border: 2px solid var(--border); border-radius: 12px; background: var(--bg); color: var(--text); cursor: pointer; text-align: center; box-shadow: none; transition: border-color .15s, transform .15s; }
  #tool-timetable .tt-tpl:hover { border-color: color-mix(in srgb, var(--accent) 60%, var(--border)); transform: translateY(-2px); }
  #tool-timetable .tt-tpl.on { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent); }
  .tt-tpl-art { display: block; aspect-ratio: 841.89 / 595.28; border-radius: 6px; overflow: hidden; background: #fff; }
  .tt-tpl-art svg, .tt-opt-art svg { display: block; width: 100%; height: 100%; }
  .tt-tpl-n { display: block; margin-top: 6px; font-size: .84rem; font-weight: 700; }
  .tt-days { display: flex; flex-wrap: wrap; gap: 6px; }
  #tool-timetable .tt-day { min-width: 48px; padding: 8px 10px; border: 1.5px solid var(--border); border-radius: 99px; background: var(--bg); color: var(--muted); font-weight: 700; box-shadow: none; cursor: pointer; }
  #tool-timetable .tt-day.on { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--text); }
  .tt-step { display: inline-flex; align-items: center; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: var(--bg); }
  #tool-timetable .tt-step button { width: 40px; height: 38px; padding: 0; border: 0; border-radius: 0; background: transparent; color: var(--text); font-size: 1.25rem; box-shadow: none; cursor: pointer; }
  #tool-timetable .tt-step button:hover { background: color-mix(in srgb, var(--text) 8%, transparent); }
  .tt-step output { min-width: 40px; text-align: center; font-weight: 800; font-size: 1.05rem; font-variant-numeric: tabular-nums; }
  .tt-tog { position: relative; display: flex; align-items: center; gap: 10px; padding: 6px 0; cursor: pointer; font-size: .92rem; }
  .tt-tog input { position: absolute; left: 0; top: 0; width: 1px; height: 1px; opacity: 0; pointer-events: none; margin: 0; }
  .tt-sw { flex: 0 0 auto; position: relative; width: 36px; height: 21px; border-radius: 99px; background: color-mix(in srgb, var(--text) 22%, transparent); transition: background .15s; }
  .tt-sw::after { content: ""; position: absolute; top: 2.5px; left: 2.5px; width: 16px; height: 16px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.3); transition: transform .18s; }
  .tt-tog input:checked + .tt-sw { background: var(--accent); }
  .tt-tog input:checked + .tt-sw::after { transform: translateX(15px); }
  .tt-tog input:focus-visible + .tt-sw { outline: 2px solid var(--accent); outline-offset: 2px; }
  .tt-togs { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
  .tt-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
  .tt-chip { display: inline-flex; align-items: stretch; border: 1.5px solid color-mix(in srgb, var(--c) 55%, var(--border)); border-radius: 99px; background: color-mix(in srgb, var(--c) 14%, var(--bg)); overflow: hidden; cursor: grab; transition: transform .12s, box-shadow .12s; }
  .tt-chip:hover { transform: translateY(-1px); }
  .tt-chip.on { border-color: var(--c); box-shadow: 0 0 0 3px color-mix(in srgb, var(--c) 35%, transparent); }
  #tool-timetable .tt-chip-b { display: inline-flex; align-items: center; gap: 6px; padding: 6px 4px 6px 10px; border: 0; border-radius: 0; background: transparent; color: var(--text); font-size: .85rem; font-weight: 600; box-shadow: none; cursor: inherit; }
  .tt-chip-b i, .tt-pchip i, .tt-brush i { width: 10px; height: 10px; border-radius: 50%; background: var(--c); flex: none; }
  #tool-timetable .tt-chip-e { padding: 0 9px 0 5px; border: 0; border-radius: 0; background: transparent; color: var(--muted); font-size: .8rem; box-shadow: none; cursor: pointer; }
  #tool-timetable .tt-chip-e:hover { color: var(--text); }
  .tt-subjedit { margin: 0 0 12px; padding: 10px; border: 1px solid var(--border); border-radius: 12px; background: var(--bg); animation: ttIn .15s ease; }
  .tt-se-row { display: flex; gap: 8px; align-items: center; }
  .tt-se-row input[type=text] { flex: 1 1 auto; }
  .tt-se-cols { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0; }
  #tool-timetable .tt-dot { width: 22px; height: 22px; padding: 0; border: 2px solid var(--card); border-radius: 50%; background: var(--c); box-shadow: 0 0 0 1px var(--border); cursor: pointer; }
  .tt-se-act { justify-content: space-between; }
  .tt-addrow { display: flex; gap: 8px; align-items: center; }
  #tool-timetable input[type=text], #tool-timetable input[type=number], #tool-timetable input[type=time] { width: 100%; box-sizing: border-box; margin: 0; padding: 9px 11px; border-radius: 9px; border: 1px solid var(--border); background: var(--bg); color: var(--text); font: inherit; }
  #tool-timetable input[type=color] { flex: none; width: 40px; height: 38px; padding: 3px; border: 1px solid var(--border); border-radius: 9px; background: var(--bg); cursor: pointer; }
  #tool-timetable input:focus-visible { outline: 2px solid var(--accent); outline-offset: 0; }
  .tt-addrow input[type=text] { flex: 1 1 auto; }
  .tt-actions { display: flex; flex-wrap: wrap; gap: 8px; }
  #tool-timetable .tt-danger { color: #E5484D; border-color: color-mix(in srgb, #E5484D 45%, var(--border)); }
  .tt-bgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 12px; margin: 0 0 12px; }
  .tt-bgrid label, .tt-texts label { display: grid; gap: 4px; font-size: .84rem; color: var(--muted); }
  .tt-texts { display: grid; gap: 10px; }
  .tt-times { display: grid; gap: 6px; }
  .tt-trow { display: grid; grid-template-columns: 30px 1fr 14px 1fr; gap: 6px; align-items: center; }
  .tt-tn { font-weight: 800; color: var(--muted); text-align: right; }
  .tt-seg { display: flex; padding: 3px; border: 1px solid var(--border); border-radius: 10px; background: var(--bg); }
  #tool-timetable .tt-seg button { flex: 1 1 0; padding: 7px 4px; border: 0; border-radius: 7px; background: transparent; color: var(--muted); font-size: .82rem; font-weight: 700; box-shadow: none; cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  #tool-timetable .tt-seg button[aria-pressed="true"] { background: var(--card); color: var(--text); box-shadow: 0 1px 4px rgba(0,0,0,.2); }
  #tool-timetable .tt-seg button:disabled { opacity: .4; cursor: not-allowed; }
  .tt-opts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-bottom: 10px; }
  #tool-timetable .tt-opt { display: block; padding: 5px 5px 6px; border: 2px solid var(--border); border-radius: 10px; background: var(--bg); color: var(--text); font-size: .76rem; font-weight: 700; text-align: center; box-shadow: none; cursor: pointer; transition: border-color .15s, transform .15s; }
  #tool-timetable .tt-opt:hover { transform: translateY(-1px); border-color: color-mix(in srgb, var(--accent) 55%, var(--border)); }
  #tool-timetable .tt-opt.on { border-color: var(--accent); }
  .tt-opt-art { display: block; aspect-ratio: 84 / 52; margin-bottom: 4px; border-radius: 6px; overflow: hidden; }
  .tt-cols { display: flex; flex-wrap: wrap; gap: 14px; }
  .tt-cols > span { display: contents; }
  .tt-col { display: flex; align-items: center; gap: 8px; font-size: .88rem; cursor: pointer; }
  .tt-range { display: grid; gap: 4px; font-size: .84rem; color: var(--muted); }
  .tt-range input { width: 100%; accent-color: var(--accent); }
  .tt-right { position: sticky; top: 80px; }
  @media (max-width: 1000px) { .tt-right { position: static; } }
  .tt-toolbar { display: flex; align-items: center; gap: 8px; min-height: 40px; margin: 0 0 10px; flex-wrap: wrap; }
  #tool-timetable .tt-ib { width: 38px; height: 36px; padding: 0; display: inline-flex; align-items: center; justify-content: center; }
  .tt-ib svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
  .tt-tip { color: var(--muted); font-size: .82rem; margin-left: 4px; }
  .tt-brush { display: inline-flex; align-items: center; gap: 7px; padding: 5px 6px 5px 12px; border-radius: 99px; background: color-mix(in srgb, var(--c) 22%, var(--card)); border: 1.5px solid var(--c); font-size: .86rem; animation: ttIn .15s ease; }
  #tool-timetable .tt-brush-x { width: 24px; height: 24px; padding: 0; border: 0; border-radius: 50%; background: color-mix(in srgb, var(--text) 12%, transparent); color: var(--text); line-height: 24px; box-shadow: none; cursor: pointer; }
  .tt-brushing .tt-tip { display: none; }
  .tt-stage { display: flex; justify-content: center; padding: 16px; border-radius: 16px; background: color-mix(in srgb, var(--text) 6%, transparent); }
  .tt-paper { position: relative; width: 100%; max-width: min(100%, calc((100vh - 260px) * 1.414)); border-radius: 3px; box-shadow: 0 8px 30px rgba(0,0,0,.28); background: #fff; overflow: hidden; outline: none; user-select: none; -webkit-user-select: none; touch-action: manipulation; }
  @media (max-width: 1000px) { .tt-paper { max-width: 100%; } }
  .tt-paper:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
  .tt-paper svg { display: block; width: 100%; height: 100%; }
  .tt-paper.zoomed { cursor: grab; touch-action: none; }
  .tt-paper.zoomed:active { cursor: grabbing; }
  .tt-bar { align-items: center; }
  #tool-timetable .cal-zoom button { min-width: 38px; padding: 7px 0; font-size: 1.1rem; line-height: 1; }
  #tool-timetable .cal-zoom #ttZoomFit { min-width: 62px; font-size: .86rem; font-weight: 600; font-variant-numeric: tabular-nums; }
  .tt-hit { fill: transparent; stroke: transparent; stroke-width: 2.2; cursor: pointer; transition: stroke .12s, fill .12s; }
  .tt-hit:hover { stroke: rgba(36,69,199,.55); fill: rgba(36,69,199,.06); }
  .tt-hit.sel { stroke: #2445C7; fill: rgba(36,69,199,.08); }
  .tt-hit.over { stroke: #16A34A; fill: rgba(22,163,74,.14); stroke-dasharray: 4 3; }
  .tt-brushing .tt-hit { cursor: copy; }
  .tt-bar { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 14px; }
  #ttmsg { min-height: 1.4em; margin-top: 10px; text-align: center; font-weight: 600; }
  #ttmsg.ok { color: var(--ok, #1a7f4b); } #ttmsg.error { color: var(--error, #d92d20); }
  .tt-pop { position: fixed; z-index: 60; width: min(340px, calc(100vw - 16px)); max-height: calc(100vh - 16px); overflow: auto; padding: 12px; border: 1px solid var(--border); border-radius: 14px; background: var(--card); color: var(--text); box-shadow: 0 18px 48px rgba(0,0,0,.35); animation: ttIn .14s ease; }
  .tt-pop-h { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 10px; font-size: .92rem; }
  #tool-timetable .tt-pop-x { width: 28px; height: 28px; padding: 0; border: 0; border-radius: 8px; background: transparent; color: var(--muted); font-size: 1.2rem; box-shadow: none; cursor: pointer; }
  .tt-pop-chips { display: flex; flex-wrap: wrap; gap: 5px; max-height: 168px; overflow: auto; margin-bottom: 10px; }
  #tool-timetable .tt-pchip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 10px; border: 1.5px solid color-mix(in srgb, var(--c) 45%, var(--border)); border-radius: 99px; background: color-mix(in srgb, var(--c) 10%, var(--bg)); color: var(--text); font-size: .8rem; font-weight: 600; box-shadow: none; cursor: pointer; }
  #tool-timetable .tt-pchip.on { border-color: var(--c); background: color-mix(in srgb, var(--c) 30%, var(--bg)); }
  .tt-pop-new { display: flex; gap: 6px; margin-bottom: 10px; }
  #tool-timetable .tt-pop-new button { width: 40px; padding: 0; }
  .tt-pop-grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: 8px; margin-bottom: 12px; }
  .tt-pop-grid label { display: grid; gap: 3px; font-size: .78rem; color: var(--muted); }
  .tt-pop-act { display: flex; justify-content: space-between; gap: 8px; }
  .tt-ghost { position: fixed; z-index: 70; pointer-events: none; padding: 7px 12px; border-radius: 10px; background: var(--c); color: #fff; font-weight: 700; font-size: .85rem; box-shadow: 0 10px 26px rgba(0,0,0,.35); transform: rotate(-3deg); }
  .tt-ghost.copy::after { content: " +"; }