/* ══════════════════════════════════════════════════════
 * AIRPG v4.0 — PC 端样式（三栏桌面布局）
 * ══════════════════════════════════════════════════════ */
:root {
  --bg: #f2f2f7;
  --surface: #fff;
  --surface-2: #fafafa;
  --text: #1c1c1e;
  --text-2: #6e6e73;
  --text-3: #aeaeb2;
  --accent: #0071e3;
  --accent-light: rgba(0,113,227,0.08);
  --border: #e5e5e8;
  --danger: #ff3b30;
  --gold: #f59e0b;
  --success: #34c759;
  --purple: #af52de;
  --warning: #ff9500;
  --shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.16);
  --font-ui: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-narrative: "Noto Serif SC", "STSong", "SimSun", serif;
  --topbar-h: 56px;
  --input-bar-h: 72px;
  --sidebar-left-w: 260px;
  --sidebar-right-w: 320px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%;font-family:var(--font-ui);background:var(--bg);color:var(--text);overflow:hidden;-webkit-font-smoothing:antialiased}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}

/* ═══════════════ 启动页（L0） ═══════════════ */
.intro{
  position:fixed;inset:0;z-index:50;
  background:var(--bg);overflow-y:auto;
  display:flex;flex-direction:column;
}
.intro-header{
  height:var(--topbar-h);flex-shrink:0;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 24px;border-bottom:1px solid var(--border);
  background:rgba(255,255,255,0.86);backdrop-filter:blur(20px) saturate(180%);
}
.intro-back{
  display:flex;align-items:center;gap:6px;
  padding:6px 12px;border:1px solid var(--border);border-radius:8px;
  background:var(--surface);color:var(--text-2);font-size:13px;
  transition:all .15s;
}
.intro-back:hover{background:var(--surface-2);color:var(--text)}
.intro-title{font-size:15px;font-weight:600;letter-spacing:-0.01em}
.intro-header-right{display:flex;align-items:center;gap:8px}
.intro-history{
  padding:6px 14px;border:1px solid var(--border);border-radius:8px;
  background:var(--surface);color:var(--text-2);font-size:13px;
  transition:all .15s;
}
.intro-history:hover{background:var(--surface-2);color:var(--text)}
.intro-more-wrap{position:relative}
.intro-more{
  width:32px;height:32px;padding:0;
  border:1px solid var(--border);border-radius:8px;
  background:var(--surface);color:var(--text-2);font-size:16px;line-height:1;
  transition:all .15s;
}
.intro-more:hover{background:var(--surface-2);color:var(--text)}
.intro-more-menu{
  position:absolute;top:calc(100% + 6px);right:0;z-index:20;
  min-width:140px;background:rgba(255,255,255,0.96);backdrop-filter:blur(12px);
  border:1px solid var(--border);border-radius:12px;padding:6px;
  box-shadow:var(--shadow);display:flex;flex-direction:column;gap:4px;
}
.intro-more-item{
  background:transparent;border:none;border-radius:8px;
  padding:8px 10px;font-size:13px;color:var(--text);text-align:left;
  transition:background .15s;white-space:nowrap;
}
.intro-more-item:hover{background:var(--surface-2)}

.intro-body{
  flex:1;display:grid;grid-template-columns:1fr 1fr;gap:32px;
  max-width:1200px;margin:0 auto;padding:48px 32px;width:100%;
}
.intro-left{display:flex;flex-direction:column;gap:16px;max-width:520px}
.intro-left h2{font-size:36px;font-weight:700;letter-spacing:-0.02em}
.intro-left .sub{font-size:15px;color:var(--text-2);line-height:1.6}
.section-label{font-size:12px;color:var(--text-3);text-transform:uppercase;letter-spacing:0.08em;font-weight:600}
.tag-group{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  padding:8px 14px;border:1px solid var(--border);border-radius:18px;
  background:var(--surface);font-size:13px;color:var(--text);
  transition:all .15s;
}
.tag:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.tag-roll{background:linear-gradient(135deg,#ffd60a,#ff9f0a);border:none;color:#fff;font-weight:600}
.tag-roll:hover{filter:brightness(1.05);color:#fff}

.model-select-row{display:flex;align-items:center;gap:10px}
.model-label{font-size:13px;color:var(--text-2)}
.model-select{
  flex:1;padding:8px 12px;border:1px solid var(--border);border-radius:8px;
  background:var(--surface);font-size:13px;color:var(--text);
  cursor:pointer;transition:border-color .15s;
}
.model-select:hover,.model-select:focus{border-color:var(--accent);outline:none}

.setup-editor textarea{
  width:100%;min-height:180px;padding:14px;
  border:1px solid var(--border);border-radius:12px;
  background:var(--surface);font-size:14px;line-height:1.6;
  resize:vertical;transition:border-color .15s;
}
.setup-editor textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}

.action-group{display:flex;gap:10px}
.start-btn{
  flex:1;padding:14px 24px;border:none;border-radius:12px;
  background:var(--accent);color:#fff;font-size:15px;font-weight:600;
  transition:all .15s;
}
.start-btn:hover:not(:disabled){filter:brightness(1.08);transform:translateY(-1px)}
.start-btn:disabled{background:var(--text-3);cursor:not-allowed;opacity:0.5}
.start-btn.secondary{background:var(--surface-2);color:var(--text);border:1px solid var(--border)}
.start-btn.secondary:hover{background:var(--bg)}
.hint{font-size:12px;color:var(--text-3);line-height:1.5}

.intro-right{
  display:flex;flex-direction:column;gap:0;
  background:var(--surface);border:1px solid var(--border);border-radius:16px;
  overflow:hidden;max-height:calc(100vh - 200px);
}
.intro-tabs{display:flex;border-bottom:1px solid var(--border)}
.intro-tab{
  flex:1;padding:12px;font-size:13px;font-weight:600;color:var(--text-2);
  background:transparent;border-bottom:2px solid transparent;
  transition:all .15s;
}
.intro-tab:hover{color:var(--text)}
.intro-tab.active{color:var(--accent);border-bottom-color:var(--accent)}
.intro-tab-panel{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:10px}

/* 小说库 */
.novel-search{
  padding:8px 12px;border:1px solid var(--border);border-radius:8px;
  background:var(--surface-2);font-size:13px;width:100%;
}
.novel-search:focus{outline:none;border-color:var(--accent)}
.novel-filter{display:flex;flex-wrap:wrap;gap:6px}
.novel-filter-chip{
  padding:4px 10px;border:1px solid var(--border);border-radius:12px;
  background:var(--surface);font-size:11px;color:var(--text-2);
  transition:all .15s;
}
.novel-filter-chip:hover,.novel-filter-chip.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.novel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px}
.novel-card{
  padding:10px;border:1px solid var(--border);border-radius:10px;
  background:var(--surface-2);cursor:pointer;
  transition:all .15s;
}
.novel-card:hover{border-color:var(--accent);transform:translateY(-1px);box-shadow:var(--shadow)}
.novel-card-name{font-size:13px;font-weight:600;margin-bottom:4px}
.novel-card-author{font-size:11px;color:var(--text-2)}
.novel-card-genre{font-size:10px;color:var(--text-3);margin-top:4px}

/* 最近游玩 */
.world-history-list{display:flex;flex-direction:column;gap:8px}
.world-history-item{
  padding:12px;border:1px solid var(--border);border-radius:10px;
  background:var(--surface-2);cursor:pointer;
  display:flex;justify-content:space-between;align-items:center;gap:10px;
  transition:all .15s;
}
.world-history-item:hover{border-color:var(--accent);transform:translateY(-1px)}
.world-history-info{flex:1;min-width:0}
.world-history-name{font-size:13px;font-weight:600;margin-bottom:2px}
.world-history-meta{font-size:11px;color:var(--text-3)}
.world-history-actions{display:flex;gap:4px}
.world-history-btn{
  padding:4px 10px;border-radius:6px;font-size:11px;
  border:1px solid var(--border);background:var(--surface);color:var(--text-2);
  transition:all .15s;
}
.world-history-btn:hover{background:var(--surface-2);color:var(--text)}
.world-history-btn.danger{color:var(--danger);border-color:var(--danger)}
.world-history-btn.danger:hover{background:var(--danger);color:#fff}

/* ═══════════════ 游戏主界面（L1 三栏） ═══════════════ */
.pc-layout{
  display:grid;
  grid-template-columns: var(--sidebar-left-w) 1fr var(--sidebar-right-w);
  grid-template-rows: var(--topbar-h) 1fr var(--input-bar-h);
  grid-template-areas:
    "topbar topbar topbar"
    "left   main   right"
    "input  input  input";
  height:100vh;width:100vw;
}
.pc-layout.left-collapsed{
  grid-template-columns: 56px 1fr var(--sidebar-right-w);
}

/* 顶栏 */
.topbar{
  grid-area:topbar;
  background:rgba(255,255,255,0.86);backdrop-filter:blur(20px) saturate(180%);
  border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;z-index:30;
}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0}
.topbar-back{
  width:32px;height:32px;border:1px solid var(--border);border-radius:8px;
  background:var(--surface);color:var(--text-2);
  display:flex;align-items:center;justify-content:center;
  transition:all .15s;flex-shrink:0;
}
.topbar-back:hover{background:var(--surface-2);color:var(--text)}
.topbar h1{font-size:15px;font-weight:600;letter-spacing:-0.01em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar-right{display:flex;align-items:center;gap:6px;flex-shrink:0}
.icon-btn{
  width:32px;height:32px;border:1px solid var(--border);border-radius:8px;
  background:var(--surface);font-size:14px;color:var(--text-2);line-height:1;
  display:flex;align-items:center;justify-content:center;
  transition:all .15s;
}
.icon-btn:hover{background:var(--surface-2);color:var(--text);border-color:var(--text-3)}
.settings-btn{
  width:32px;height:32px;border:1px solid var(--border);border-radius:8px;
  background:var(--surface);color:var(--text-2);
  display:flex;align-items:center;justify-content:center;
  transition:all .15s;
}
.settings-btn:hover{background:var(--surface-2);color:var(--text)}
.topbar-more-wrap{position:relative}
.auto-btn{
  display:flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:14px;border:1px solid var(--border);
  background:var(--surface);font-size:13px;font-weight:600;
  color:var(--text-2);transition:all .2s;
}
.auto-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.auto-btn .dot{width:6px;height:6px;border-radius:50%;background:var(--text-3);transition:background .2s}
.auto-btn.active .dot{background:#fff;animation:pulse 1.5s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.3}}

/* 顶栏 ⋯ 菜单 */
.ctrl-panel{
  position:absolute;top:calc(100% + 6px);right:0;z-index:50;
  min-width:160px;background:rgba(255,255,255,0.98);backdrop-filter:blur(12px);
  border:1px solid var(--border);border-radius:12px;padding:6px;
  box-shadow:var(--shadow);display:flex;flex-direction:column;gap:2px;
}
.ctrl-btn{
  background:transparent;border:none;border-radius:8px;
  padding:9px 12px;font-size:13px;color:var(--text);text-align:left;
  transition:background .15s;white-space:nowrap;
}
.ctrl-btn:hover{background:var(--surface-2)}
.ctrl-btn.warn{color:var(--danger)}
.ctrl-btn.warn:hover{background:rgba(255,59,48,0.08)}

/* 左栏 */
.pc-sidebar-left{
  grid-area:left;
  background:var(--surface);border-right:1px solid var(--border);
  overflow-y:auto;display:flex;flex-direction:column;
  padding:16px 14px;gap:20px;
}
.pc-layout.left-collapsed .pc-sidebar-left{padding:16px 8px;align-items:center}
.pc-layout.left-collapsed .sidebar-label,
.pc-layout.left-collapsed .world-info-meta,
.pc-layout.left-collapsed .char-info,
.pc-layout.left-collapsed .timeline-node-label,
.pc-layout.left-collapsed .timeline-node-time{display:none}

.sidebar-section{display:flex;flex-direction:column;gap:8px}
.sidebar-label{
  font-size:11px;color:var(--text-3);text-transform:uppercase;
  letter-spacing:0.08em;font-weight:600;padding:0 2px;
}

/* 世界信息卡 */
.world-info-card{
  padding:12px;border:1px solid var(--border);border-radius:12px;
  background:var(--surface-2);
}
.world-info-name{font-size:14px;font-weight:600;margin-bottom:4px}
.world-info-meta{font-size:11px;color:var(--text-3);line-height:1.5}

/* 角色卡 */
.char-card{
  display:flex;align-items:center;gap:10px;
  padding:10px;border:1px solid var(--border);border-radius:12px;
  background:var(--surface-2);
}
.char-avatar{
  width:36px;height:36px;border-radius:50%;
  background:linear-gradient(135deg,var(--accent),#5ac8fa);
  color:#fff;font-size:14px;font-weight:600;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.char-info{flex:1;min-width:0}
.char-name{font-size:13px;font-weight:600}
.char-title{font-size:11px;color:var(--text-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 时间线（左栏内嵌） */
.sidebar-timeline{flex:1;min-height:0}
.timeline-list{
  flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:0;
  padding-right:2px;
}
.timeline-node{
  position:relative;padding:8px 8px 8px 24px;cursor:pointer;
  border-radius:8px;transition:background .15s;
}
.timeline-node:hover{background:var(--surface-2)}
.timeline-node::before{
  content:'';position:absolute;left:9px;top:24px;bottom:-4px;
  width:1px;background:var(--border);
}
.timeline-node:last-child::before{display:none}
.timeline-node-dot{
  position:absolute;left:5px;top:14px;
  width:9px;height:9px;border-radius:50%;
  background:var(--border);transition:all .2s;
}
.timeline-node.current .timeline-node-dot{
  background:var(--accent);box-shadow:0 0 0 3px var(--accent-light);
}
.timeline-node.locked{opacity:0.5;cursor:not-allowed}
.timeline-node.locked .timeline-node-dot{background:var(--text-3)}
.timeline-node-label{font-size:12px;font-weight:500;line-height:1.4}
.timeline-node.current .timeline-node-label{color:var(--accent);font-weight:600}
.timeline-node-time{font-size:10px;color:var(--text-3);margin-top:2px}

/* 中栏：叙事主区 */
.pc-main{
  grid-area:main;
  overflow:hidden;display:flex;flex-direction:column;
  background:var(--bg);
}
.narrative-flow{
  flex:1;overflow-y:auto;
  padding:32px 48px 24px;
  display:flex;flex-direction:column;gap:14px;
  scroll-behavior:smooth;
}
.narrative-flow::-webkit-scrollbar{width:8px}
.narrative-flow::-webkit-scrollbar-track{background:transparent}
.narrative-flow::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}
.narrative-flow::-webkit-scrollbar-thumb:hover{background:var(--text-3)}
.narrative-flow > *{max-width:720px;margin-left:auto;margin-right:auto;width:100%}

.msg{animation:fadeUp 0.3s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}

.msg.narrative{
  font-family:var(--font-narrative);font-size:17px;line-height:1.85;
  text-indent:2em;color:var(--text);
}
.msg.narrative.streaming{text-indent:0}
.msg.narrative:first-of-type::first-letter{
  font-size:1.5em;font-weight:700;float:left;line-height:1;margin-right:4px;
}
.msg.narrative .highlight{background:var(--accent-light);padding:1px 6px;border-radius:4px;color:var(--accent);font-weight:500}
.msg.narrative .kw{color:var(--gold);font-weight:500}

.msg.player{
  align-self:flex-end;background:var(--accent);color:#fff;
  padding:10px 16px;border-radius:18px 18px 4px 18px;
  font-size:14px;line-height:1.5;max-width:70%;
  font-family:var(--font-ui);text-indent:0;
}
.msg.system{
  align-self:center;background:var(--surface-2);
  padding:6px 14px;border-radius:12px;
  font-size:12px;color:var(--text-2);
  font-family:var(--font-ui);text-indent:0;
}
.msg.thinking{
  align-self:flex-start;color:var(--text-3);font-style:italic;
  font-size:13px;font-family:var(--font-ui);text-indent:0;
}
.msg .msg-image{
  max-width:100%;max-height:280px;border-radius:12px;margin-top:8px;
  border:1px solid var(--border);
}

/* 骰子动画 */
.dice-toast{
  position:fixed;top:80px;left:50%;transform:translateX(-50%);
  background:rgba(0,0,0,0.85);color:#fff;
  padding:14px 24px;border-radius:14px;font-size:14px;
  z-index:200;animation:diceToastIn 0.3s ease;
  display:flex;align-items:center;gap:10px;
}
@keyframes diceToastIn{from{opacity:0;transform:translate(-50%,-10px)}to{opacity:1;transform:translate(-50%,0)}}
.dice-result{font-size:22px;font-weight:700;color:var(--gold)}

/* 右栏 */
.pc-sidebar-right{
  grid-area:right;
  background:var(--surface);border-left:1px solid var(--border);
  overflow-y:auto;display:flex;flex-direction:column;
}

/* 状态栏（竖排） */
.status-bar{
  padding:16px 14px;display:flex;flex-direction:column;gap:12px;
  border-bottom:1px solid var(--border);flex-shrink:0;
}
.status-bar.empty{display:none}
.stat{display:flex;flex-direction:column;gap:6px}
.stat-label{font-size:11px;color:var(--text-3);text-transform:uppercase;letter-spacing:0.06em;display:flex;align-items:center;gap:4px;font-weight:600}
.stat-tier-row{display:flex;align-items:center;gap:8px}
.stat-dots{display:flex;gap:4px}
.stat-dot{width:8px;height:8px;border-radius:50%;background:var(--border);transition:background .3s}
.stat-dot.active.danger{background:var(--danger)}
.stat-dot.active.primary{background:var(--accent)}
.stat-dot.active.success{background:var(--success)}
.stat-dot.active.warning{background:var(--warning)}
.stat-dot.active.info{background:var(--text-3)}
.stat-dot.active{background:var(--accent)}
.stat-value{font-size:13px;font-weight:600}

/* 行动面板（右栏中部，占据剩余空间） */
.action-panel{
  flex:1;display:flex;flex-direction:column;
  padding:16px 14px;overflow-y:auto;gap:12px;
}
.action-panel.hidden{display:none}
.options-prompt{
  font-size:11px;color:var(--text-3);text-transform:uppercase;
  letter-spacing:0.08em;font-weight:600;
}
.options-list{display:flex;flex-direction:column;gap:8px}
.option-item{
  display:flex;align-items:flex-start;gap:10px;
  padding:12px;border:1px solid var(--border);border-radius:12px;
  background:var(--surface-2);cursor:pointer;
  transition:all .15s;position:relative;
}
.option-item:hover{border-color:var(--accent);background:var(--accent-light);transform:translateY(-1px)}
.option-item.selected{border-color:var(--accent);background:var(--accent-light)}
.opt-letter{
  width:22px;height:22px;border-radius:6px;
  background:var(--surface);border:1px solid var(--border);
  font-size:11px;font-weight:700;color:var(--text-2);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.option-item:hover .opt-letter{background:var(--accent);color:#fff;border-color:var(--accent)}
.opt-body{flex:1;min-width:0}
.opt-label{font-size:13px;font-weight:500;line-height:1.4}
.opt-hint{font-size:11px;color:var(--text-3);margin-top:3px;line-height:1.4}
.opt-arrow{
  color:var(--text-3);font-size:16px;line-height:1;
  align-self:center;flex-shrink:0;transition:transform .15s;
}
.option-item:hover .opt-arrow{transform:translateX(2px);color:var(--accent)}

.roll-action-btn{
  width:100%;padding:12px;border:1px dashed var(--border);border-radius:12px;
  background:transparent;color:var(--text-2);font-size:13px;font-weight:500;
  transition:all .15s;
}
.roll-action-btn:hover{border-color:var(--gold);color:var(--gold);background:rgba(245,158,11,0.04)}
.roll-action-btn.rolling{opacity:0.6;cursor:wait}
.panel-handle{display:none}

/* 成就区（右栏底部） */
.achievement-section{
  padding:16px 14px;border-top:1px solid var(--border);
  display:flex;flex-direction:column;gap:8px;flex-shrink:0;
}
.achievement-preview{
  display:flex;flex-wrap:wrap;gap:6px;
}
.achievement-chip{
  padding:4px 10px;border-radius:12px;
  background:linear-gradient(135deg,rgba(245,158,11,0.12),rgba(245,158,11,0.06));
  border:1px solid rgba(245,158,11,0.3);
  font-size:11px;color:var(--gold);font-weight:500;
}

/* 底部贯通输入条 */
.pc-input-bar{
  grid-area:input;
  background:var(--surface);border-top:1px solid var(--border);
  display:flex;align-items:center;padding:0 24px;
}
.rich-input-panel{width:100%;max-width:1200px;margin:0 auto}
.rich-input-row{display:flex;align-items:flex-end;gap:10px}
.rich-upload-btn{
  width:36px;height:36px;border:1px solid var(--border);border-radius:10px;
  background:var(--surface);color:var(--text-2);flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  transition:all .15s;
}
.rich-upload-btn:hover{background:var(--surface-2);color:var(--accent);border-color:var(--accent)}
.rich-input{
  flex:1;min-height:40px;max-height:120px;
  padding:10px 14px;border:1px solid var(--border);border-radius:12px;
  background:var(--surface-2);font-size:14px;line-height:1.5;
  overflow-y:auto;outline:none;transition:border-color .15s;
}
.rich-input:focus{border-color:var(--accent);background:var(--surface)}
.rich-input:empty::before{
  content:attr(data-placeholder);
  color:var(--text-3);pointer-events:none;
}
.rich-input img{max-width:80px;max-height:80px;border-radius:8px;margin:4px;border:1px solid var(--border)}
.inline-model-select{
  width:160px;padding:9px 12px;flex-shrink:0;
}
.send-btn{
  width:40px;height:40px;border-radius:50%;
  background:var(--accent);color:#fff;
  font-size:18px;font-weight:700;line-height:1;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;transition:all .15s;
}
.send-btn:hover{filter:brightness(1.1);transform:scale(1.05)}
.send-btn:disabled{background:var(--text-3);cursor:not-allowed}

/* ═══════════════ L2 抽屉层 ═══════════════ */
.overview-overlay,.history-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,0.3);
  opacity:0;pointer-events:none;transition:opacity .25s;z-index:80;
}
.overview-overlay.open,.overview-overlay.show,.history-overlay.open,.history-overlay.show{opacity:1;pointer-events:auto}

/* 历史右滑抽屉（380px） */
.history-panel{
  position:fixed;top:0;right:0;bottom:0;width:380px;max-width:90vw;
  background:var(--surface);box-shadow:-8px 0 24px rgba(0,0,0,0.08);
  transform:translateX(100%);transition:transform .3s cubic-bezier(0.32,0.72,0,1);
  z-index:90;display:flex;flex-direction:column;
}
.history-panel.show,.history-panel.open{transform:translateX(0)}
.history-header{
  padding:16px 20px;border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  font-size:15px;font-weight:600;
}
.history-close{
  width:28px;height:28px;border-radius:8px;
  background:transparent;color:var(--text-2);font-size:18px;line-height:1;
  transition:all .15s;
}
.history-close:hover{background:var(--surface-2);color:var(--text)}
.history-list{flex:1;overflow-y:auto;padding:12px}

/* 设置抽屉（380px） */
.overview-drawer{
  position:fixed;top:0;right:0;bottom:0;
  background:var(--surface);box-shadow:-8px 0 24px rgba(0,0,0,0.08);
  transform:translateX(100%);transition:transform .3s cubic-bezier(0.32,0.72,0,1);
  z-index:90;display:flex;flex-direction:column;
}
.overview-drawer.show,.overview-drawer.open{transform:translateX(0)}
.settings-drawer{width:380px;max-width:90vw}
.overview-header{
  padding:16px 20px;border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  font-size:15px;font-weight:600;flex-shrink:0;
}
.overview-close{
  width:28px;height:28px;border-radius:8px;
  background:transparent;color:var(--text-2);font-size:18px;line-height:1;
  transition:all .15s;
}
.overview-close:hover{background:var(--surface-2);color:var(--text)}
.overview-body{flex:1;overflow-y:auto;padding:16px 20px}
.overview-section{border:1px solid var(--border);border-radius:10px;margin-bottom:10px;overflow:hidden}
.overview-section-header{
  padding:12px 14px;display:flex;align-items:center;justify-content:space-between;
  cursor:pointer;background:var(--surface-2);transition:background .15s;
}
.overview-section-header:hover{background:var(--bg)}
.overview-section-title{font-size:13px;font-weight:600}
.overview-section-arrow{font-size:10px;color:var(--text-3);transition:transform .2s}
.overview-section.open .overview-section-arrow{transform:rotate(180deg)}
.overview-section-content{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
}
.overview-section.open .overview-section-content{max-height:500px}
.overview-section-content > *{padding:12px 14px}

.settings-model-row{display:flex;align-items:center;gap:10px}
.settings-model-hint{font-size:11px;color:var(--warning);padding:0 14px 12px}

/* 世界总览抽屉（720px，左右分栏） */
.world-overview-drawer{width:720px;max-width:95vw}
.overview-split{
  flex:1;display:grid;grid-template-columns:1fr 1fr;
  overflow:hidden;min-height:0;
}
.overview-left{
  border-right:1px solid var(--border);overflow-y:auto;
  padding:16px;display:flex;flex-direction:column;gap:12px;
}
.overview-meta{
  padding:12px;background:var(--surface-2);border-radius:10px;
  font-size:12px;color:var(--text-2);line-height:1.6;
}
.overview-sections{flex:1;display:flex;flex-direction:column;gap:8px}
.overview-edit-toolbar{
  display:flex;gap:8px;padding-top:8px;border-top:1px solid var(--border);
}
.ov-edit-btn{
  flex:1;padding:8px 12px;border:1px solid var(--border);border-radius:8px;
  background:var(--surface);font-size:12px;color:var(--text-2);
  transition:all .15s;
}
.ov-edit-btn:hover:not(:disabled){background:var(--surface-2);color:var(--text)}
.ov-edit-btn:disabled{opacity:0.4;cursor:not-allowed}
.ov-edit-btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.ov-edit-btn.primary:hover:not(:disabled){filter:brightness(1.1)}

.overview-right{
  display:flex;flex-direction:column;overflow:hidden;
}
.ov-chat-header{
  padding:12px 16px;font-size:12px;font-weight:600;color:var(--text-2);
  border-bottom:1px solid var(--border);background:var(--surface-2);
}
.ov-chat-log{
  flex:1;overflow-y:auto;padding:12px 16px;
  display:flex;flex-direction:column;gap:8px;
}
.ov-chat-msg{
  padding:8px 12px;border-radius:10px;font-size:13px;line-height:1.5;
  max-width:90%;
}
.ov-chat-msg.user{align-self:flex-end;background:var(--accent);color:#fff}
.ov-chat-msg.ai{align-self:flex-start;background:var(--surface-2);color:var(--text)}
.ov-chat-input-row{
  display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--border);
}
.ov-chat-input-row input{
  flex:1;padding:8px 12px;border:1px solid var(--border);border-radius:8px;
  font-size:13px;outline:none;transition:border-color .15s;
}
.ov-chat-input-row input:focus{border-color:var(--accent)}
.ov-chat-send{
  width:32px;height:32px;border-radius:50%;
  background:var(--accent);color:#fff;font-size:14px;font-weight:700;
  flex-shrink:0;
}
.overview-actions{
  padding:12px 16px;border-top:1px solid var(--border);
  display:flex;gap:10px;flex-shrink:0;
}
.overview-btn{
  flex:1;padding:12px;border-radius:10px;font-size:14px;font-weight:600;
  transition:all .15s;
}
.overview-btn.primary{background:var(--accent);color:#fff}
.overview-btn.primary:hover{filter:brightness(1.1)}
.overview-btn.secondary{background:var(--surface-2);color:var(--text);border:1px solid var(--border)}
.overview-btn.secondary:hover{background:var(--bg)}

/* 旧版时间线抽屉（左滑出，保留兼容） */
.timeline-panel{
  position:fixed;top:0;left:0;bottom:0;width:320px;
  background:var(--surface);box-shadow:8px 0 24px rgba(0,0,0,0.08);
  transform:translateX(-100%);transition:transform .3s cubic-bezier(0.32,0.72,0,1);
  z-index:90;display:flex;flex-direction:column;
}
.timeline-panel.show,.timeline-panel.open{transform:translateX(0)}
.timeline-header{
  padding:16px 20px;border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  font-size:15px;font-weight:600;
}
.timeline-close{
  width:28px;height:28px;border-radius:8px;
  background:transparent;color:var(--text-2);font-size:18px;
  transition:all .15s;
}
.timeline-close:hover{background:var(--surface-2);color:var(--text)}
.timeline-list-drawer{flex:1;overflow-y:auto;padding:12px}

/* ═══════════════ L3 中央模态 ═══════════════ */
.world-card-panel{
  position:fixed;inset:0;background:rgba(0,0,0,0.4);backdrop-filter:blur(8px);
  z-index:100;display:flex;align-items:center;justify-content:center;
  padding:40px;overflow-y:auto;
}
.world-card{
  background:var(--surface);border-radius:20px;
  width:100%;max-width:680px;max-height:90vh;
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--shadow-lg);
}
.wc-building{padding:32px;display:flex;flex-direction:column;gap:16px}
.wc-build-header{display:flex;align-items:center;gap:12px}
.wc-build-spinner{
  width:20px;height:20px;border:2px solid var(--border);
  border-top-color:var(--accent);border-radius:50%;
  animation:spin 0.8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.wc-build-text{font-size:14px;color:var(--text-2)}
.wc-build-stream{
  font-family:var(--font-narrative);font-size:13px;line-height:1.7;
  color:var(--text-2);max-height:300px;overflow-y:auto;
  padding:12px;background:var(--surface-2);border-radius:10px;
  white-space:pre-wrap;
}
.wc-done{padding:32px;overflow-y:auto;display:flex;flex-direction:column;gap:16px}
.wc-header{display:flex;align-items:baseline;gap:12px}
.wc-name{font-size:24px;font-weight:700;letter-spacing:-0.02em}
.wc-source{font-size:11px;color:var(--text-3);text-transform:uppercase;letter-spacing:0.08em}
.wc-premise{font-family:var(--font-narrative);font-size:14px;line-height:1.7;color:var(--text)}
.wc-atmosphere{font-size:12px;color:var(--text-2);font-style:italic}
.wc-section{display:flex;flex-direction:column;gap:6px}
.wc-section-label{font-size:11px;color:var(--text-3);text-transform:uppercase;letter-spacing:0.08em;font-weight:600}
.wc-lore,.wc-character,.wc-factions,.wc-states{
  font-size:13px;line-height:1.6;color:var(--text);
}
.wc-actions{display:flex;gap:10px;padding-top:8px}
.wc-btn{flex:1;padding:12px;border-radius:10px;font-size:14px;font-weight:600;transition:all .15s}
.wc-btn-reroll{background:var(--surface-2);color:var(--text);border:1px solid var(--border)}
.wc-btn-reroll:hover{background:var(--bg)}
.wc-btn-start{background:var(--accent);color:#fff}
.wc-btn-start:hover{filter:brightness(1.1)}

/* iframe 容器（中央模态） */
.iframe-container{
  position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);
  width:90vw;max-width:1200px;height:80vh;
  background:var(--surface);border-radius:16px;
  box-shadow:var(--shadow-lg);z-index:100;
  display:flex;flex-direction:column;overflow:hidden;
}
.iframe-header{
  padding:14px 20px;border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  font-size:14px;font-weight:600;flex-shrink:0;
}
.iframe-close{
  width:28px;height:28px;border-radius:8px;
  background:transparent;color:var(--text-2);font-size:18px;
  transition:all .15s;
}
.iframe-close:hover{background:var(--surface-2);color:var(--text)}
.iframe-wrapper{flex:1;overflow:hidden}
.iframe-wrapper iframe{width:100%;height:100%;border:none}

/* ═══════════════ L4 悬浮层 ═══════════════ */
.auto-mini-panel{
  position:fixed;right:24px;bottom:calc(var(--input-bar-h) + 16px);
  width:280px;background:var(--surface);
  border:1px solid var(--border);border-radius:14px;
  padding:14px;box-shadow:var(--shadow);z-index:70;
  cursor:pointer;transition:all .2s;
}
.auto-mini-panel:hover{box-shadow:0 8px 24px rgba(0,0,0,0.12);transform:translateY(-2px)}
.auto-mini-panel.hidden{display:none}
.auto-mini-info{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.auto-mini-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--accent);animation:pulse 1.5s ease-in-out infinite;
}
.auto-mini-text{font-size:12px;font-weight:600;color:var(--text);flex:1}
.auto-mini-progress{
  height:4px;background:var(--border);border-radius:2px;overflow:hidden;
  margin-bottom:10px;position:relative;
}
.auto-mini-progress::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(90deg,var(--accent),#5ac8fa);
  animation:progressSlide 1.5s ease-in-out infinite;
}
@keyframes progressSlide{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
.auto-mini-pause{
  width:100%;padding:6px;border:1px solid var(--border);border-radius:8px;
  background:var(--surface-2);font-size:11px;color:var(--text-2);
  transition:all .15s;
}
.auto-mini-pause:hover{background:var(--bg);color:var(--text)}

/* 成就 toast */
.achievement-toast{
  position:fixed;top:80px;right:24px;
  background:linear-gradient(135deg,#ffd60a,#ff9f0a);color:#fff;
  padding:14px 20px;border-radius:14px;font-size:13px;font-weight:600;
  z-index:200;animation:achievementIn 0.4s cubic-bezier(0.34,1.56,0.64,1);
  box-shadow:0 8px 24px rgba(245,158,11,0.4);
  display:flex;align-items:center;gap:10px;
}
@keyframes achievementIn{from{opacity:0;transform:translateX(40px) scale(0.9)}to{opacity:1;transform:translateX(0) scale(1)}}
.achievement-toast-icon{font-size:22px}

/* 错误 toast */
.error-toast{
  position:fixed;bottom:calc(var(--input-bar-h) + 16px);left:50%;transform:translateX(-50%);
  background:var(--danger);color:#fff;
  padding:12px 16px;border-radius:12px;font-size:13px;
  z-index:200;display:flex;align-items:center;gap:10px;
  box-shadow:0 8px 24px rgba(255,59,48,0.3);
  animation:errorIn 0.3s ease;
}
@keyframes errorIn{from{opacity:0;transform:translate(-50%,10px)}to{opacity:1;transform:translate(-50%,0)}}
.error-retry{
  padding:4px 10px;background:rgba(255,255,255,0.2);border-radius:6px;
  font-size:12px;font-weight:600;transition:background .15s;
}
.error-retry:hover{background:rgba(255,255,255,0.3)}
.error-close{
  width:22px;height:22px;border-radius:50%;
  background:rgba(255,255,255,0.2);font-size:12px;
  transition:background .15s;
}
.error-close:hover{background:rgba(255,255,255,0.3)}

/* ═══════════════ 结算页 ═══════════════ */
.ending-screen{
  position:fixed;inset:0;background:var(--bg);z-index:120;
  overflow-y:auto;
}
.ending-scroll{
  max-width:720px;margin:0 auto;padding:48px 24px;
  display:flex;flex-direction:column;gap:24px;
}
.ending-header{text-align:center;padding:24px 0}
.ending-icon{font-size:56px;margin-bottom:16px}
.ending-header h2{font-size:32px;font-weight:700;letter-spacing:-0.02em;margin-bottom:8px}
.ending-subtitle{font-size:14px;color:var(--text-2)}
.ending-section{
  background:var(--surface);border:1px solid var(--border);border-radius:14px;
  padding:20px;
}
.ending-label{
  font-size:11px;color:var(--text-3);text-transform:uppercase;
  letter-spacing:0.08em;font-weight:600;margin-bottom:12px;
}
.ending-verdict{font-size:18px;font-weight:600;line-height:1.5}
.ending-stats,.ending-dice{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px}
.ending-stat-item{
  padding:12px;background:var(--surface-2);border-radius:10px;
  text-align:center;
}
.ending-stat-value{font-size:22px;font-weight:700;color:var(--accent)}
.ending-stat-label{font-size:11px;color:var(--text-3);margin-top:4px}
.ending-state-change,.ending-badges,.ending-highlights{
  display:flex;flex-direction:column;gap:8px;font-size:13px;line-height:1.6;
}
.ending-timeline{font-size:13px;line-height:1.8;color:var(--text-2)}
.ending-share{text-align:center}
.share-btn{
  padding:12px 24px;background:var(--surface);border:1px solid var(--border);
  border-radius:12px;font-size:14px;font-weight:600;color:var(--text);
  transition:all .15s;
}
.share-btn:hover{border-color:var(--accent);color:var(--accent)}
.ending-actions{padding:12px 0}

/* ═══════════════ 响应式 ═══════════════ */
@media (max-width: 1280px) {
  :root{--sidebar-left-w:220px;--sidebar-right-w:280px}
  .intro-body{grid-template-columns:1fr;gap:24px;padding:32px 24px}
  .intro-left{max-width:100%}
  .intro-right{max-height:500px}
}
@media (max-width: 1023px) {
  :root{--sidebar-left-w:56px;--sidebar-right-w:280px}
  .pc-layout{grid-template-columns:56px 1fr var(--sidebar-right-w)}
  .pc-sidebar-left{padding:16px 8px;align-items:center}
  .sidebar-label,.world-info-meta,.char-info,.timeline-node-label,.timeline-node-time{display:none}
  .world-info-card,.char-card{padding:8px;border:none;background:transparent}
}
@media (max-width: 768px) {
  body::before{
    content:'屏幕宽度不足，建议使用移动端访问 /mobile/ 或 widen 浏览器窗口';
    position:fixed;inset:0;background:var(--bg);z-index:9999;
    display:flex;align-items:center;justify-content:center;
    padding:24px;text-align:center;font-size:14px;color:var(--text-2);
  }
}