:root{
  --paper:#f4efe4; --paper-2:#faf7f0; --ink:#1f1c19; --ink-2:#4a443c; --ink-3:#8a8177;
  --line:#ddd3c2; --cinnabar:#a8321e; --cinnabar-soft:#c4563c; --moss:#5c6b52;
  --gold:#b08b46; --shadow:0 1px 2px rgba(60,45,20,.06),0 8px 24px rgba(60,45,20,.07);
  --serif:"Songti SC","Noto Serif SC","Source Han Serif SC",Georgia,"STSong",serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:"SF Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{
  font-family:var(--sans); color:var(--ink); background:var(--paper);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(176,139,70,.07), transparent 42%),
    radial-gradient(circle at 88% 92%, rgba(92,107,82,.06), transparent 45%);
  -webkit-font-smoothing:antialiased; overflow:hidden;
}
#app{height:100%}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;color:var(--ink)}
a{color:var(--cinnabar);text-decoration:none}

/* ---------- 通用控件 ---------- */
.btn{
  border:1px solid var(--line); background:var(--paper-2); color:var(--ink-2);
  padding:6px 12px; border-radius:6px; font-size:13px; transition:.15s; white-space:nowrap;
}
.btn:hover{border-color:var(--ink-3); color:var(--ink)}
.btn.primary{background:var(--cinnabar); border-color:var(--cinnabar); color:#fff8f0}
.btn.primary:hover{background:var(--cinnabar-soft)}
.btn.ghost{background:transparent;border-color:transparent;color:var(--ink-3)}
.btn.ghost:hover{background:rgba(0,0,0,.04);color:var(--ink)}
.btn.sm{padding:3px 8px;font-size:12px}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.danger:hover{color:var(--cinnabar);border-color:var(--cinnabar)}

.field{display:flex;flex-direction:column;gap:5px;margin-bottom:14px}
.field label{font-size:12px;color:var(--ink-3);letter-spacing:.04em}
.input,.textarea,select.input{
  width:100%;background:var(--paper-2);border:1px solid var(--line);border-radius:6px;
  padding:8px 10px;font-size:14px;outline:none;transition:.15s;
}
.input:focus,.textarea:focus{border-color:var(--gold);box-shadow:0 0 0 3px rgba(176,139,70,.12)}
.textarea{resize:vertical;line-height:1.7}
.hint{font-size:12px;color:var(--ink-3);line-height:1.6}

/* ---------- 布局 ---------- */
.workbench{display:grid;grid-template-columns:216px 268px 1fr;height:100%}
.rail{background:rgba(240,233,220,.72);border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0}
.rail-head{padding:18px 16px 12px;border-bottom:1px solid var(--line)}
.brand{font-family:var(--serif);font-size:17px;letter-spacing:.02em;white-space:nowrap;line-height:1.3}
.brand small{display:block;font-family:var(--sans);font-size:7.5px;letter-spacing:.06em;color:var(--ink-3);margin-top:5px;white-space:nowrap}
.rail-body{flex:1;overflow:auto;padding:10px 8px}
.rail-foot{padding:10px;border-top:1px solid var(--line);display:flex;gap:6px}
.book{
  padding:9px 10px;border-radius:7px;cursor:pointer;margin-bottom:2px;position:relative;
  border-left:3px solid transparent;
}
.book:hover{background:rgba(255,255,255,.55)}
.book.on{background:var(--paper-2);border-left-color:var(--cinnabar);box-shadow:var(--shadow)}
.book .t{font-family:var(--serif);font-size:14.5px;line-height:1.35;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.book .m{font-size:11px;color:var(--ink-3);margin-top:3px;display:flex;gap:8px}

.list{background:rgba(250,247,240,.5);border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0}
.list-head{padding:14px 14px 10px;border-bottom:1px solid var(--line)}
.list-title{font-family:var(--serif);font-size:16px;display:flex;justify-content:space-between;align-items:center}
.tabs{display:flex;gap:2px;margin-top:12px;background:rgba(0,0,0,.04);padding:2px;border-radius:7px}
.tabs button{flex:1;border:0;background:transparent;padding:5px;font-size:12.5px;border-radius:5px;color:var(--ink-3)}
.tabs button.on{background:var(--paper-2);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.06)}
.list-body{flex:1;overflow:auto;padding:8px}

.chap{padding:9px 10px;border-radius:7px;cursor:pointer;margin-bottom:1px;border-left:2px solid transparent}
.chap:hover{background:rgba(255,255,255,.6)}
.chap.on{background:var(--paper-2);border-left-color:var(--cinnabar);box-shadow:var(--shadow)}
.chap .r1{display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.chap .t{font-family:var(--serif);font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chap .r2{font-size:11px;color:var(--ink-3);margin-top:3px;display:flex;gap:8px;align-items:center}
.dot{width:5px;height:5px;border-radius:50%;background:var(--ink-3);flex:none}
.dot.lock{background:var(--moss)}
.section-label{font-size:11px;color:var(--ink-3);letter-spacing:.18em;padding:12px 10px 4px;font-family:var(--serif)}

.main{display:flex;flex-direction:column;min-width:0;min-height:0;background:
  linear-gradient(90deg,rgba(0,0,0,.02),transparent 24px)}
.toolbar{height:52px;display:flex;align-items:center;gap:8px;padding:0 20px;border-bottom:1px solid var(--line);background:rgba(250,247,240,.6)}
.toolbar .spacer{flex:1}
.status-pill{font-size:11.5px;padding:3px 9px;border-radius:99px;border:1px solid var(--line);color:var(--ink-3)}
.status-pill.lock{color:var(--moss);border-color:rgba(92,107,82,.35);background:rgba(92,107,82,.07)}

.canvas{flex:1;overflow:auto;display:flex;justify-content:center;padding:30px 24px 80px}
.sheet{width:100%;max-width:720px}

/* ---------- 写作区 ---------- */
.kw-row{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0 18px;min-height:26px}
.chip{
  font-size:12px;padding:3px 9px;border-radius:99px;background:rgba(168,50,30,.07);
  color:var(--cinnabar);border:1px solid rgba(168,50,30,.16);display:flex;gap:5px;align-items:center;
}
.chip button{border:0;background:transparent;color:inherit;opacity:.5;padding:0 0 0 2px;font-size:13px}
.chip button:hover{opacity:1}
.chip-add{border-style:dashed;background:transparent;color:var(--ink-3);border-color:var(--line)}

.title-input{
  width:100%;border:0;background:transparent;font-family:var(--serif);
  font-size:26px;letter-spacing:.05em;padding:2px 0;outline:none;
}
.title-input::placeholder{color:rgba(138,129,119,.5)}
.meta-row{display:flex;gap:10px;align-items:center;margin-top:10px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.meta-row input{flex:1;border:0;background:transparent;font-size:13px;color:var(--ink-2);outline:none;padding:4px 0}
.meta-row input::placeholder{color:var(--ink-3)}

.editor{
  font-family:var(--serif);font-size:17px;line-height:2.05;letter-spacing:.02em;
  min-height:44vh;padding:22px 0;outline:none;white-space:pre-wrap;color:var(--ink);
}
.editor:empty:before{content:attr(data-ph);color:var(--ink-3);font-size:15px;letter-spacing:.03em}
.editor[contenteditable="false"]{color:var(--ink-2)}
.editor p{margin:0 0 .95em;text-indent:0}
.editor .gen-cursor::after{
  content:"";display:inline-block;width:7px;height:1.05em;background:var(--cinnabar);
  vertical-align:-2px;margin-left:2px;animation:blink 1s steps(2) infinite;
}
@keyframes blink{50%{opacity:0}}

.underline-note{font-size:12px;color:var(--ink-3);padding:10px 0;border-top:1px dashed var(--line);display:flex;gap:8px;align-items:center}

/* ---------- 生成面板 ---------- */
.genbar{
  border:1px solid var(--line);background:var(--paper-2);border-radius:10px;padding:14px;
  margin-top:20px;box-shadow:var(--shadow);
}
.genbar .row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.genbar .row + .row{margin-top:10px}
select.mini{border:1px solid var(--line);background:#fff;border-radius:5px;padding:4px 6px;font-size:12px;color:var(--ink-2)}
label.check{font-size:12px;color:var(--ink-3);display:flex;gap:5px;align-items:center;cursor:pointer}

/* ---------- 素材 ---------- */
.src{border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:var(--paper-2);margin-bottom:8px}
.src .r1{display:flex;justify-content:space-between;gap:8px;align-items:flex-start}
.src .name{font-size:13px;line-height:1.4;word-break:break-all}
.src .m{font-size:11px;color:var(--ink-3);margin-top:4px;display:flex;gap:10px}
.drop{
  border:1.5px dashed var(--line);border-radius:9px;padding:22px;text-align:center;
  color:var(--ink-3);font-size:13px;margin-bottom:14px;transition:.15s;cursor:pointer;
}
.drop:hover,.drop.over{border-color:var(--gold);background:rgba(176,139,70,.05);color:var(--ink-2)}
.badge{font-size:10.5px;padding:2px 7px;border-radius:99px;background:rgba(92,107,82,.1);color:var(--moss)}
.badge.style{background:rgba(176,139,70,.13);color:var(--gold)}

/* ---------- 模态 ---------- */
.modal-mask{position:fixed;inset:0;background:rgba(31,28,25,.34);display:flex;align-items:center;justify-content:center;z-index:50;padding:24px;animation:fade .16s}
@keyframes fade{from{opacity:0}}
.modal{
  background:var(--paper-2);border-radius:12px;box-shadow:0 24px 60px rgba(40,30,10,.22);
  width:100%;max-width:620px;max-height:88vh;display:flex;flex-direction:column;overflow:hidden;
}
.modal.wide{max-width:920px}
.modal h3{margin:0;padding:18px 22px 12px;font-family:var(--serif);font-size:17px;font-weight:500;letter-spacing:.06em;border-bottom:1px solid var(--line)}
.modal .body{padding:18px 22px;overflow:auto}
.modal .foot{padding:12px 22px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:8px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.md{font-size:14px;line-height:1.85;font-family:var(--serif)}
.md h1,.md h2,.md h3{font-family:var(--serif);font-weight:500;letter-spacing:.04em}
.md h2{font-size:16px;margin:18px 0 8px;padding-bottom:4px;border-bottom:1px solid var(--line)}
.md h3{font-size:14.5px;margin:14px 0 6px}
.md ul,.md ol{padding-left:1.3em;margin:6px 0}
.md code{background:rgba(0,0,0,.05);padding:1px 4px;border-radius:3px;font-family:var(--mono);font-size:.9em}
.md pre{background:rgba(0,0,0,.04);padding:10px;border-radius:6px;overflow:auto}

.toast{
  position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);opacity:0;pointer-events:none;
  background:var(--ink);color:#f7f2e6;padding:9px 16px;border-radius:8px;font-size:13px;
  transition:.22s;z-index:99;max-width:70vw;box-shadow:0 10px 30px rgba(0,0,0,.18);
}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.err{background:var(--cinnabar)}

.empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--ink-3);gap:14px;text-align:center}
.empty .big{font-family:var(--serif);font-size:22px;letter-spacing:.18em;color:var(--ink-2)}
.empty p{font-size:13px;line-height:1.9;margin:0}

.spinner{width:13px;height:13px;border:2px solid rgba(0,0,0,.12);border-top-color:var(--cinnabar);border-radius:50%;display:inline-block;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.insight{font-size:12px;color:var(--ink-3);line-height:1.7;margin-top:8px;padding-left:2px}
.insight b{color:var(--ink-2);font-weight:500}
mark{background:rgba(176,139,70,.22);color:inherit;border-radius:2px}

@media(max-width:1100px){.workbench{grid-template-columns:180px 240px 1fr}}
@media(max-width:860px){
  .workbench{grid-template-columns:1fr;grid-template-rows:auto auto 1fr}
  .rail{display:none}
}

/* 中英文混排：拉丁字母部分用无衬线，避免宋体的西文显得局促 */
.brand .lat{font-family:var(--sans);font-size:.9em;letter-spacing:.02em;font-weight:600}

/* ---------- 设置弹窗：key 行 / 子模型 chips ---------- */
.keybtn{position:relative}
.key-dot{display:none;position:absolute;top:-3px;right:-3px;width:8px;height:8px;border-radius:50%;
  background:var(--cinnabar);box-shadow:0 0 0 2px var(--paper-2)}
.key-row{display:flex;gap:6px;align-items:stretch}
.key-row .input{flex:1;font-family:var(--mono);font-size:12.5px;letter-spacing:.02em}
.key-row .btn{flex:none;padding:0 10px}
.ok-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--moss);
  margin-right:5px;vertical-align:1px}
.field label code{font-family:var(--mono);font-size:11.5px;color:var(--ink-2);
  background:rgba(0,0,0,.045);padding:1px 5px;border-radius:4px;letter-spacing:0}

.model-chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:var(--paper-2);color:var(--ink-2);
  border-radius:999px;padding:4px 13px;font-size:12.5px;transition:.14s}
.chip:hover{border-color:var(--gold);color:var(--ink)}
.chip.on{background:var(--cinnabar);border-color:var(--cinnabar);color:#fff8f0}

.adv{margin-top:4px;border-top:1px dashed var(--line);padding-top:10px}
.adv summary{font-size:12px;color:var(--ink-3);letter-spacing:.05em;cursor:pointer;list-style:none}
.adv summary::-webkit-details-marker{display:none}
.adv summary:before{content:"▸ ";color:var(--gold)}
.adv[open] summary:before{content:"▾ "}

/* ---------- 登录页 ---------- */
.gatecard{background:var(--paper-2);padding:34px 32px 26px;border-radius:14px;
  box-shadow:var(--shadow);width:340px;border:1px solid var(--line)}
.gatebrand{font-family:var(--serif);font-size:20px;letter-spacing:.04em;margin-bottom:8px}
.gatebrand .lat{font-family:var(--sans);font-size:.88em;font-weight:600;letter-spacing:.02em}

/* ---------- 侧栏账户条 ---------- */
.acct{display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:7px 14px 9px;border-top:1px solid var(--line);font-size:11.5px;color:var(--ink-3)}
.acct-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.acct a{color:var(--ink-3);font-size:11.5px}
.acct a:hover{color:var(--cinnabar)}