:root{
  --primary:#FF6B35;
  --primary-light:#FF8C5A;
  --primary-dark:#E55A2B;
  --secondary:#FFD93D;
  --bg:#FFFFFF;
  --bg-gray:#FAFAFA;
  --bg-gradient:linear-gradient(135deg,#FFFFFF 0%,#F8F9FA 100%);
  --text-primary:#1A1A1A;
  --text-secondary:#666666;
  --text-light:#999999;
  --border:#ECECEC;
  --shadow-sm:0 2px 4px rgba(0,0,0,0.04);
  --shadow-md:0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg:0 8px 24px rgba(0,0,0,0.08);
  --r-sm:6px;--r-md:10px;--r-lg:14px;--r-xl:20px;
  --sidebar:#FFF7F2;
  --sidebar2:#FFEDE3;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Segoe UI,Roboto,sans-serif;background:var(--bg-gray);color:var(--text-primary);-webkit-font-smoothing:antialiased}
button{font-family:inherit;cursor:pointer}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:#e6e6e6;border-radius:9px}

/* ===================== 布局外壳 ===================== */
.app{display:flex;height:100vh;overflow:hidden}
.sidebar{width:236px;background:var(--sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;flex:none}
.brand{display:flex;align-items:center;gap:11px;padding:20px 18px 16px}
.brand .logo{width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));display:grid;place-items:center;color:#fff;font-size:18px;font-weight:800;box-shadow:0 6px 16px rgba(255,107,53,.35)}
.brand b{font-size:18px;font-weight:800;color:var(--text-primary);letter-spacing:.5px}
.brand .sub{font-size:11px;color:var(--text-light);margin-top:-2px}
.nav{flex:1;overflow:auto;padding:8px 12px}
.nav button{display:flex;align-items:center;gap:12px;width:100%;border:0;background:transparent;color:var(--text-secondary);padding:11px 13px;border-radius:12px;font-size:14px;text-align:left;margin:3px 0;transition:.15s}
.nav button:hover{background:var(--sidebar2);color:var(--text-primary)}
.nav button.active{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;box-shadow:0 6px 16px rgba(255,107,53,.32)}
.nav .ico{width:20px;text-align:center;font-size:16px}
.side-foot{padding:12px 16px;font-size:11px;color:var(--text-light);border-top:1px solid var(--border);line-height:1.6}

.main{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--bg-gradient)}
.topbar{height:60px;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 22px;gap:14px;flex:none}
.topbar .title{font-weight:800;font-size:16px;color:var(--text-primary)}
.topbar .spacer{flex:1}
.btn{border:1px solid var(--border);background:#fff;color:var(--text-primary);padding:9px 16px;border-radius:12px;font-size:13px;transition:.15s;font-weight:600}
.btn:hover{border-color:var(--primary);color:var(--primary)}
.btn.primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border:0;box-shadow:0 6px 16px rgba(255,107,53,.3)}
.btn.primary:hover{filter:brightness(1.05);color:#fff}
.btn.primary:disabled{opacity:.6;cursor:wait}
.btn.ghost{background:transparent}
.btn.sm{padding:6px 12px;font-size:12px;border-radius:10px}
.icon-btn{border:0;background:transparent;font-size:17px;color:var(--text-secondary);padding:7px;border-radius:10px}
.icon-btn:hover{background:var(--sidebar2);color:var(--primary)}

.content{flex:1;overflow:auto;padding:24px}
.content{padding-bottom:88px} /* 给移动端底栏留白 */

.view-head{display:flex;align-items:center;gap:12px;margin-bottom:20px;flex-wrap:wrap}
.view-head h2{margin:0;font-size:21px;font-weight:800}
.view-head .desc{color:var(--text-secondary);font-size:13px}

.card{background:var(--bg);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow-sm);padding:20px}
.grid{display:grid;gap:18px}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:1080px){.cols-3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.cols-3,.cols-2{grid-template-columns:1fr}}

label.fld{display:block;font-size:13px;color:var(--text-secondary);margin:14px 0 6px;font-weight:600}
input.in,textarea.in,select.in{width:100%;border:1px solid var(--border);border-radius:12px;padding:11px 13px;font-size:14px;font-family:inherit;background:#fff;color:var(--text-primary);transition:.15s}
input.in:focus,textarea.in:focus,select.in:focus{outline:0;border-color:var(--primary);box-shadow:0 0 0 3px rgba(255,107,53,.12)}
textarea.in{resize:vertical;line-height:1.7}

.tag{display:inline-flex;align-items:center;gap:5px;background:var(--sidebar2);color:var(--primary-dark);border-radius:20px;padding:5px 12px;font-size:12px;margin:4px;font-weight:600}
.tag.rem{cursor:pointer}
.tag.rem:hover{background:#ffe0e6;color:#ff4d6d}
.chip{display:inline-block;padding:7px 14px;border:1px solid var(--border);border-radius:20px;font-size:13px;background:#fff;color:var(--text-secondary);cursor:pointer;margin:4px;font-weight:600;transition:.15s}
.chip:hover{border-color:var(--primary)}
.chip.on{background:var(--primary);color:#fff;border-color:var(--primary)}

.book-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:18px;box-shadow:var(--shadow-sm);transition:.15s;cursor:pointer;position:relative;overflow:hidden}
.book-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,var(--primary),var(--secondary))}
.book-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--primary-light)}
.book-card .bc-title{font-weight:800;font-size:17px;margin-bottom:8px;padding-left:6px}
.book-card .bc-meta{color:var(--text-secondary);font-size:12px;display:flex;gap:10px;flex-wrap:wrap;padding-left:6px}
.book-card .bc-del{position:absolute;top:12px;right:12px;opacity:0;transition:.15s}
.book-card:hover .bc-del{opacity:1}

.vol{border-left:3px solid var(--primary);padding-left:14px;margin:16px 0}
.vol h4{margin:0 0 8px;font-size:15px}
.ch-item{display:flex;align-items:center;gap:8px;padding:9px 12px;border:1px solid var(--border);border-radius:10px;margin:6px 0;background:#fff;cursor:pointer;transition:.15s}
.ch-item:hover{border-color:var(--primary)}
.ch-item .ch-no{color:var(--primary-dark);font-size:12px;font-weight:700;min-width:42px}
.ch-item .ch-sum{color:var(--text-secondary);font-size:12px;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.char-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:18px;box-shadow:var(--shadow-sm)}
.char-card .av{width:54px;height:54px;border-radius:15px;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;display:grid;place-items:center;font-size:20px;font-weight:800}
.ai-toolbar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.editor-wrap{display:grid;grid-template-columns:240px 1fr;gap:18px}
@media(max-width:1080px){.editor-wrap{grid-template-columns:1fr}}
.ch-list{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:12px;max-height:72vh;overflow:auto}
.ch-list .item{padding:10px 12px;border-radius:10px;cursor:pointer;font-size:13px;transition:.15s}
.ch-list .item:hover{background:var(--sidebar2)}
.ch-list .item.on{background:var(--primary);color:#fff}
.ch-list .item .t{font-weight:700}
.ch-list .item .w{color:var(--text-secondary);font-size:11px}
.ch-list .item.on .w{color:rgba(255,255,255,.8)}

.intel{background:linear-gradient(135deg,#FFF4EC,#FFF9F2);border:1px solid #FFE0CC;border-radius:var(--r-lg);padding:18px;margin-top:16px}
.intel h4{margin:0 0 10px;font-size:14px;color:var(--primary-dark)}
.intel ul{margin:6px 0;padding-left:18px;font-size:13px;line-height:1.9}

.modal-bg{position:fixed;inset:0;background:rgba(26,16,10,.42);display:none;align-items:center;justify-content:center;z-index:50;padding:20px}
.modal-bg.show{display:flex}
.modal{background:#fff;border-radius:var(--r-xl);width:min(640px,96vw);max-height:90vh;overflow:auto;padding:24px;box-shadow:0 24px 70px rgba(0,0,0,.3)}
.modal h3{margin:0 0 6px}
.steps{display:flex;gap:6px;margin:16px 0}
.steps .st{flex:1;height:5px;border-radius:5px;background:var(--border)}
.steps .st.on{background:var(--primary)}
.step-body{font-size:14px;line-height:1.7}
.step-body .row{margin:12px 0}
.step-body .row .lab{font-size:13px;color:var(--text-secondary);margin-bottom:6px;font-weight:600}

.toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%) translateY(20px);background:#1A1A1A;color:#fff;padding:12px 22px;border-radius:14px;font-size:13px;opacity:0;transition:.25s;z-index:99;pointer-events:none;box-shadow:var(--shadow-lg)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

.feed-card,.clue-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-md);padding:14px;box-shadow:var(--shadow-sm)}
.badge{font-size:11px;padding:4px 11px;border-radius:20px;background:var(--sidebar2);color:var(--primary-dark);font-weight:700}
.badge.ok{background:#e6f8f0;color:#1aa06d}
.badge.warn{background:#fff1e2;color:var(--primary-dark)}
.preview{background:#FFF9F5;border:1px dashed #FFD8C2;border-radius:12px;padding:16px;white-space:pre-wrap;font-size:13px;line-height:1.8;max-height:46vh;overflow:auto}
.muted{color:var(--text-light);font-size:12px}
.muted.ok{color:#1aa06d}.muted.warn{color:var(--primary-dark);font-weight:600}
.right{text-align:right}.center{text-align:center}
.flex{display:flex;gap:10px;align-items:center}
.wrap{display:flex;flex-wrap:wrap;gap:6px}
.mt{margin-top:16px}.mb{margin-bottom:16px}
.svg-graph{width:100%;height:320px;background:#FFF9F5;border:1px solid var(--border);border-radius:12px}
.kpi{display:flex;gap:14px;flex-wrap:wrap;margin-top:10px}
.kpi .k{background:var(--sidebar2);border-radius:14px;padding:12px 20px;text-align:center}
.kpi .k b{display:block;font-size:22px;color:var(--primary-dark)}
.kpi .k span{font-size:12px;color:var(--text-secondary)}
.sensitive{background:#fff1e2;color:var(--primary-dark);border-radius:8px;padding:4px 8px;font-size:12px;margin:3px;display:inline-block}

/* ===================== 首页 Hero + 功能卡片 ===================== */
.hero{position:relative;overflow:hidden;border-radius:var(--r-xl);padding:30px 32px;color:#fff;background:linear-gradient(120deg,var(--primary) 0%,var(--primary-dark) 55%,#c94a1f 100%);box-shadow:0 14px 34px rgba(255,107,53,.28)}
.hero::after{content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;background:rgba(255,217,61,.22);filter:blur(4px)}
.hero h1{margin:0;font-size:26px;font-weight:800;letter-spacing:.5px;position:relative}
.hero p{margin:8px 0 0;font-size:14px;opacity:.92;position:relative}
.hero .hero-stats{display:flex;gap:26px;margin-top:20px;position:relative}
.hero .hero-stats .s b{font-size:24px;display:block;line-height:1.1}
.hero .hero-stats .s span{font-size:12px;opacity:.9}
.hero .hero-cta{position:absolute;right:30px;top:50%;transform:translateY(-50%)}
@media(max-width:680px){.hero .hero-cta{position:static;margin-top:18px;transform:none}}

.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:980px){.feat-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.feat-grid{grid-template-columns:1fr}}
.feat-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:18px;box-shadow:var(--shadow-sm);cursor:pointer;transition:.16s;display:flex;gap:14px;align-items:flex-start}
.feat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--primary-light)}
.feat-card .fc-ico{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;font-size:22px;flex:none;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff}
.feat-card .fc-t{font-weight:800;font-size:15px}
.feat-card .fc-d{font-size:12px;color:var(--text-secondary);margin-top:3px;line-height:1.6}

/* ===================== 移动端底部导航 ===================== */
.bottom-nav{display:none}
@media(max-width:860px){
  .app{display:block;height:auto;min-height:100vh}
  .sidebar{display:none}
  .main{height:auto;min-height:100vh}
  .topbar{position:sticky;top:0;z-index:30}
  .content{padding-bottom:96px}
  .bottom-nav{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:40;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-top:1px solid var(--border);padding:6px 4px;justify-content:space-around}
  .bottom-nav button{flex:1;border:0;background:transparent;color:var(--text-light);display:flex;flex-direction:column;align-items:center;gap:3px;padding:6px 2px;font-size:11px}
  .bottom-nav button .bi{font-size:19px}
  .bottom-nav button.active{color:var(--primary)}
}