/* ===================== 设计变量 ===================== */
:root{
  --navy:#1b2c4d;          /* 深藏蓝 主色 */
  --navy-dark:#14223d;
  --gold:#c8a45c;          /* 暖金 辅助色 */
  --gold-soft:#efe2c6;
  --cream:#f8f4ec;         /* 奶油米白 背景 */
  --card:#ffffff;
  --green:#1f4d3a;          /* 墨绿 板块主色 */
  --green-soft:#e7efe9;
  --orange:#e3602a;         /* 橘红 强调/按钮 */
  --orange-soft:#fdeae0;
  --text:#2b2b2b;          /* 深灰 正文 */
  --text-light:#8a8a8a;    /* 浅灰 辅助 */
  --line:#ece4d6;
  --shadow:0 6px 22px rgba(27,44,77,.08);
  --shadow-sm:0 2px 10px rgba(27,44,77,.06);
  --radius:16px;
  --radius-sm:10px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html,body{height:100%;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  color:var(--text);
  background:var(--cream);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;cursor:pointer;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
.hidden{display:none!important;}
.muted{color:var(--text-light);font-size:13px;}

/* ===================== 顶部导航 ===================== */
.topbar{
  position:sticky;top:0;z-index:50;
  background:var(--navy);
  background:linear-gradient(100deg,var(--navy) 0%,var(--navy-dark) 100%);
  color:#fff;
  box-shadow:0 2px 14px rgba(20,34,61,.25);
}
.topbar-inner{
  max-width:1280px;margin:0 auto;
  display:flex;align-items:center;gap:18px;
  padding:0 18px;height:62px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-logo{
  width:36px;height:36px;border-radius:9px;
  background:linear-gradient(135deg,var(--gold),#e3c585);
  color:var(--navy);font-weight:800;font-size:20px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 2px 8px rgba(200,164,92,.4);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:1px;}
.brand-sub{font-size:11px;color:var(--gold);opacity:.95;}
.topnav{display:flex;gap:4px;margin-left:14px;flex:1;}
.nav-item{
  padding:8px 16px;border-radius:9px;font-size:14px;color:#cdd6e6;
  transition:.18s;white-space:nowrap;
}
.nav-item:hover{background:rgba(255,255,255,.08);color:#fff;}
.nav-item.active{background:var(--gold);color:var(--navy);font-weight:600;}
.topbar-actions{flex-shrink:0;}
.ghost-btn{
  border:1px solid rgba(255,255,255,.25);color:#fff;
  padding:8px 14px;border-radius:9px;font-size:13px;transition:.18s;
  display:inline-flex;align-items:center;gap:6px;
}
.ghost-btn:hover{background:rgba(255,255,255,.1);}
.badge{background:var(--orange);color:#fff;border-radius:20px;font-size:11px;padding:1px 7px;font-weight:700;}
.menu-toggle{display:none;font-size:22px;color:#fff;}

/* ===================== 布局 ===================== */
.layout{display:flex;max-width:1280px;margin:0 auto;align-items:flex-start;}
.sidebar{
  width:264px;flex-shrink:0;
  background:var(--card);
  border-right:1px solid var(--line);
  position:sticky;top:62px;height:calc(100vh - 62px);
  overflow-y:auto;padding:16px 12px;
}
.sidebar-head{
  display:flex;justify-content:space-between;align-items:center;
  padding:4px 8px 12px;font-size:13px;font-weight:700;color:var(--navy);
  border-bottom:1px dashed var(--line);margin-bottom:10px;
}
.link-btn{color:var(--orange);font-size:12px;font-weight:600;}
.link-btn:hover{text-decoration:underline;}

/* 分类树 */
.tree{font-size:14px;}
.tree-node{margin-bottom:2px;}
.tree-label{
  display:flex;align-items:center;gap:6px;
  padding:7px 8px;border-radius:8px;cursor:pointer;transition:.15s;
  color:var(--text);
}
.tree-label:hover{background:var(--cream);}
.tree-label.active{background:var(--green-soft);color:var(--green);font-weight:600;}
.tree-caret{width:16px;color:var(--text-light);font-size:11px;transition:.2s;flex-shrink:0;}
.tree-caret.open{transform:rotate(90deg);}
.tree-caret.leaf{visibility:hidden;}
.tree-code{font-size:11px;color:var(--text-light);font-family:ui-monospace,monospace;}
.tree-children{margin-left:14px;border-left:1px solid var(--line);padding-left:6px;overflow:hidden;}
.tree-children.collapsed{display:none;}
.tree-count{
  margin-left:auto;font-size:11px;color:var(--text-light);
  background:var(--cream);border-radius:10px;padding:0 7px;
}

.content{flex:1;min-width:0;padding:22px 26px 60px;}

/* ===================== 卡片 ===================== */
.card{
  background:var(--card);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:20px 22px;margin-bottom:18px;
  border:1px solid var(--line);
}
.card-title{font-size:15px;font-weight:700;color:var(--navy);margin-bottom:14px;
  display:flex;align-items:center;gap:8px;}
.card-title::before{content:"";width:4px;height:15px;background:var(--orange);border-radius:3px;}

/* 首页 hero */
.hero{
  display:flex;gap:30px;align-items:center;flex-wrap:wrap;
  background:linear-gradient(120deg,var(--navy) 0%,#243a63 60%,#2c4a55 100%);
  color:#fff;border:none;position:relative;overflow:hidden;
}
.hero::after{content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;
  background:radial-gradient(circle,rgba(200,164,92,.25),transparent 70%);}
.hero-text{flex:1;min-width:280px;z-index:1;}
.hero-text h1{font-size:25px;font-weight:800;letter-spacing:.5px;margin-bottom:10px;}
.hero-text p{color:#cdd6e6;font-size:14px;max-width:520px;}
.hero-search{display:flex;gap:10px;margin-top:18px;max-width:520px;}
.hero-search input{
  flex:1;padding:12px 16px;border-radius:10px;border:none;font-size:14px;
  background:rgba(255,255,255,.95);color:var(--text);
}
.hero-stats{display:flex;gap:14px;z-index:1;flex-wrap:wrap;}
.stat-box{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  border-radius:12px;padding:14px 18px;min-width:96px;text-align:center;
}
.stat-num{font-size:26px;font-weight:800;color:var(--gold);}
.stat-label{font-size:12px;color:#cdd6e6;margin-top:2px;}

/* 栅格 */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:18px;}

/* 图表 */
.chart-wrap{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.chart-wrap svg{max-width:100%;}
.legend{font-size:12px;display:flex;flex-direction:column;gap:6px;}
.legend-item{display:flex;align-items:center;gap:7px;color:var(--text);}
.legend-dot{width:10px;height:10px;border-radius:3px;flex-shrink:0;}
.legend-val{margin-left:auto;color:var(--text-light);font-variant-numeric:tabular-nums;}

/* 快捷卡片 */
.quick{
  background:var(--card);border-radius:var(--radius);padding:16px 18px;
  box-shadow:var(--shadow-sm);border:1px solid var(--line);border-top:3px solid var(--green);
  transition:.18s;cursor:pointer;
}
.quick:hover{transform:translateY(-3px);box-shadow:var(--shadow);}
.quick-ico{font-size:22px;}
.quick h4{font-size:15px;color:var(--navy);margin:8px 0 4px;}
.quick p{font-size:12px;color:var(--text-light);}

/* 最近查询 */
.recent-list{display:flex;flex-wrap:wrap;gap:10px;}
.recent-tag{
  background:var(--cream);border:1px solid var(--line);border-radius:20px;
  padding:6px 14px;font-size:13px;cursor:pointer;transition:.15s;
}
.recent-tag:hover{border-color:var(--gold);color:var(--navy);}
.recent-tag .rc{font-family:ui-monospace,monospace;color:var(--gold);font-size:11px;margin-left:6px;}

/* ===================== 查询页 ===================== */
.query-bar{padding:18px 20px;}
.query-row{display:flex;gap:12px;flex-wrap:wrap;}
.search-box{
  flex:1;min-width:240px;display:flex;align-items:center;gap:8px;
  background:var(--cream);border:1px solid var(--line);border-radius:10px;padding:0 14px;
}
.search-box:focus-within{border-color:var(--gold);box-shadow:0 0 0 3px var(--gold-soft);}
.search-ico{color:var(--text-light);}
.search-box input{flex:1;border:none;background:none;outline:none;padding:12px 0;font-size:15px;color:var(--text);}
.primary-btn{
  background:var(--orange);color:#fff;padding:12px 26px;border-radius:10px;
  font-size:15px;font-weight:600;transition:.18s;box-shadow:0 4px 12px rgba(227,96,42,.3);
}
.primary-btn:hover{background:#d4541f;transform:translateY(-1px);}
.ghost-btn.on-light{border:1px solid var(--line);color:var(--text);background:var(--cream);}
.ghost-btn.on-light:hover{background:#fff;border-color:var(--gold);}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.chip{
  background:var(--cream);border:1px solid var(--line);border-radius:20px;
  padding:5px 13px;font-size:12px;color:var(--text);transition:.15s;cursor:pointer;
}
.chip:hover{background:var(--gold-soft);border-color:var(--gold);}
.breadcrumb{margin-top:12px;font-size:13px;color:var(--text-light);display:none;}
.breadcrumb.show{display:block;}
.breadcrumb b{color:var(--green);}

.result-head{display:flex;justify-content:space-between;align-items:center;margin:4px 2px 14px;flex-wrap:wrap;gap:10px;}
.seg{display:flex;background:var(--cream);border-radius:9px;padding:3px;border:1px solid var(--line);}
.seg-btn{padding:5px 14px;font-size:13px;border-radius:7px;color:var(--text-light);}
.seg-btn.active{background:var(--navy);color:#fff;}

/* 结果卡片 */
.result-list{display:grid;grid-template-columns:1fr;gap:14px;}
.result-card{
  background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow-sm);
  border:1px solid var(--line);padding:18px 20px;transition:.18s;position:relative;
  border-left:4px solid var(--green);
}
.result-card:hover{box-shadow:var(--shadow);transform:translateY(-2px);}
.rc-top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;flex-wrap:wrap;}
.rc-name{font-size:17px;font-weight:700;color:var(--navy);}
.rc-code{
  font-family:ui-monospace,"SF Mono",monospace;font-size:13px;
  background:var(--cream);color:var(--gold);padding:3px 10px;border-radius:7px;
  letter-spacing:.5px;font-weight:600;
}
.rc-tax{
  font-size:13px;font-weight:700;padding:3px 11px;border-radius:7px;white-space:nowrap;
}
.t-13{background:var(--orange-soft);color:var(--orange);}
.t-9{background:var(--green-soft);color:var(--green);}
.t-6{background:#eef1f7;color:#3a5bbf;}
.t-0{background:#fdeaea;color:#c0392b;}
.t-no{background:#f0f0f0;color:#777;}
.rc-meta{display:grid;grid-template-columns:1fr 1fr;gap:10px 24px;margin-top:14px;}
.rc-field{font-size:13px;}
.rc-field .k{color:var(--text-light);display:block;font-size:12px;margin-bottom:2px;}
.rc-field .v{color:var(--text);}
.rc-note{grid-column:1 / -1;background:var(--cream);border-radius:9px;padding:10px 12px;font-size:13px;color:#5a5a5a;}
.rc-actions{margin-top:14px;display:flex;gap:10px;}
.fav-btn{
  border:1px solid var(--line);border-radius:8px;padding:7px 14px;font-size:13px;
  color:var(--text);display:inline-flex;align-items:center;gap:6px;transition:.15s;
}
.fav-btn:hover{border-color:var(--gold);}
.fav-btn.on{background:var(--gold-soft);border-color:var(--gold);color:var(--navy);font-weight:600;}
.copy-btn{background:var(--navy);color:#fff;border-radius:8px;padding:7px 14px;font-size:13px;}
.copy-btn:hover{background:var(--navy-dark);}

.empty-state{text-align:center;padding:50px 20px;color:var(--text-light);}
.empty-ico{font-size:40px;margin-bottom:10px;}
.empty-state p{font-size:16px;color:var(--text);margin-bottom:6px;}

/* ===================== 知识库 ===================== */
.kb-card{
  background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow-sm);
  border:1px solid var(--line);padding:20px 22px;
}
.kb-card h3{color:var(--navy);font-size:16px;margin-bottom:10px;display:flex;align-items:center;gap:8px;}
.kb-card h3 .tag{background:var(--green);color:#fff;font-size:11px;padding:2px 8px;border-radius:6px;font-weight:600;}
.kb-card ul{margin-left:18px;color:#555;font-size:14px;}
.kb-card li{margin-bottom:7px;}
.kb-card p{font-size:14px;color:#555;}

/* ===================== 帮助 ===================== */
.help-list{counter-reset:h;}
.help-item{
  display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line);
}
.help-item:last-child{border-bottom:none;}
.help-num{
  flex-shrink:0;width:28px;height:28px;border-radius:8px;background:var(--orange);
  color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:14px;
}
.help-body h4{font-size:15px;color:var(--navy);margin-bottom:3px;}
.help-body p{font-size:13px;color:#666;}

/* ===================== 收藏抽屉 ===================== */
.drawer{position:fixed;inset:0;z-index:80;display:none;}
.drawer.show{display:block;}
.drawer-mask{position:absolute;inset:0;background:rgba(20,34,61,.45);}
.drawer-panel{
  position:absolute;right:0;top:0;height:100%;width:380px;max-width:88vw;
  background:var(--cream);box-shadow:-6px 0 30px rgba(0,0,0,.2);
  display:flex;flex-direction:column;animation:slideIn .25s ease;
}
@keyframes slideIn{from{transform:translateX(100%);}to{transform:translateX(0);}}
.drawer-head{
  background:var(--navy);color:#fff;padding:16px 20px;display:flex;justify-content:space-between;align-items:center;
  font-weight:700;
}
.fav-list{flex:1;overflow-y:auto;padding:14px 16px;display:flex;flex-direction:column;gap:10px;}
.fav-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:13px 15px;
  border-left:4px solid var(--gold);
}
.fav-item .fi-name{font-weight:700;color:var(--navy);font-size:15px;}
.fav-item .fi-code{font-family:ui-monospace,monospace;font-size:12px;color:var(--gold);margin-top:3px;}
.fav-item .fi-meta{display:flex;justify-content:space-between;align-items:center;margin-top:8px;}
.fav-item .fi-rate{font-size:12px;color:var(--text-light);}
.fav-item .fi-del{color:#c0392b;font-size:12px;}
.fav-empty{text-align:center;color:var(--text-light);padding:40px 10px;}

/* ===================== Toast ===================== */
.toast{
  position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--navy);color:#fff;padding:11px 22px;border-radius:10px;font-size:14px;
  box-shadow:0 8px 24px rgba(0,0,0,.25);opacity:0;pointer-events:none;transition:.25s;z-index:99;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* ===================== 响应式 ===================== */
@media (max-width:980px){
  .grid-3{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .menu-toggle{display:block;}
  .topnav{
    position:absolute;top:62px;left:0;right:0;background:var(--navy-dark);
    flex-direction:column;gap:0;margin:0;padding:6px 10px;display:none;
  }
  .topnav.show{display:flex;}
  .nav-item{border-radius:0;padding:13px 12px;border-bottom:1px solid rgba(255,255,255,.08);}
  .nav-item.active{background:none;color:var(--gold);}
  .brand-sub{display:none;}
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;height:100%;z-index:70;
    transform:translateX(-100%);transition:transform .25s;width:280px;box-shadow:6px 0 30px rgba(0,0,0,.18);
  }
  .sidebar.open{transform:translateX(0);}
  .overlay{position:fixed;inset:0;background:rgba(20,34,61,.45);z-index:65;display:none;}
  .overlay.show{display:block;}
  .content{padding:16px 14px 50px;}
  .grid-2,.grid-3{grid-template-columns:1fr;}
  .hero{flex-direction:column;align-items:stretch;}
  .hero-stats{justify-content:space-between;}
  .stat-box{flex:1;min-width:0;}
  .rc-meta{grid-template-columns:1fr;}
  .query-row .primary-btn,.query-row .ghost-btn{flex:1;}
  .hero-search input{font-size:14px;}
}
@media (max-width:420px){
  .topbar-inner{padding:0 12px;gap:10px;}
  .brand-text{display:none;}
  .stat-box{padding:10px 12px;}
  .stat-num{font-size:22px;}
}

/* ===================== 重要提醒横幅 ===================== */
.notice-banner{
  display:flex;align-items:flex-start;gap:12px;
  background:rgba(227,96,42,.06);
  border:1px solid var(--orange,#e3602a);
  border-left:5px solid var(--orange,#e3602a);
  border-radius:14px;padding:14px 18px;margin-top:18px;
}
.notice-ico{font-size:20px;line-height:1.5;color:var(--orange,#e3602a);}
.notice-txt{display:flex;flex-direction:column;gap:3px;font-size:14px;color:var(--text,#2b2b2b);line-height:1.6;}
.notice-txt b{color:var(--navy);}

/* ===================== 页脚免责声明 ===================== */
.site-footer{
  margin-top:26px;padding:18px 0 32px;
  border-top:1px solid var(--line);text-align:center;
}
.site-footer-inner{max-width:1200px;margin:0 auto;padding:0 20px;}
.disclaimer{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--text-light);
  background:rgba(31,77,58,.06);border:1px dashed var(--green,#1f4d3a);
  border-radius:10px;padding:9px 16px;
}

@media (max-width:768px){
  .notice-banner{flex-direction:row;padding:13px 14px;margin-top:14px;}
  .notice-txt{font-size:13px;}
  .disclaimer{font-size:12px;padding:8px 12px;}
}

/* ===================== 六大类标签 / 快捷标签 ===================== */
.cat-tabs{display:flex;flex-wrap:wrap;gap:9px;margin-top:14px;}
.cat-tab{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 15px;border-radius:10px;cursor:pointer;
  border:1px solid var(--navy);background:#fff;color:var(--navy);
  font-size:14px;font-weight:600;transition:.15s;
}
.cat-tab:hover{background:var(--navy);color:#fff;}
.cat-ico{
  display:inline-flex;align-items:center;justify-content:center;
  width:20px;height:20px;border-radius:50%;background:var(--gold,#c8a45c);color:#fff;
  font-size:12px;font-weight:700;
}
.cat-tab:hover .cat-ico{background:#fff;color:var(--navy);}

.quick-tags{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.qt-group{display:flex;align-items:flex-start;gap:10px;flex-wrap:wrap;}
.qt-cat{
  flex:0 0 96px;font-size:12px;font-weight:700;color:#1f4d3a;
  background:rgba(31,77,58,.07);border-radius:8px;padding:5px 8px;text-align:center;
}
.qt-tags{display:flex;flex-wrap:wrap;gap:8px;flex:1;}
.qt{
  padding:6px 13px;border-radius:20px;cursor:pointer;font-size:13px;
  border:1px solid var(--line);background:#fff;color:var(--text);transition:.15s;
}
.qt:hover{border-color:#e3602a;color:#e3602a;background:rgba(227,96,42,.06);}

/* ===================== 结果卡片字段 ===================== */
.rc-code-field .rc-code-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.rc-code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:14px;font-weight:700;color:var(--navy);
  background:#f8f4ec;border:1px solid var(--line);border-radius:8px;padding:5px 10px;
  letter-spacing:.5px;
}
.copy-btn{
  border:none;cursor:pointer;background:#e3602a;color:#fff;
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:8px;transition:.15s;
}
.copy-btn:hover{filter:brightness(.94);}
.rc-note{margin-top:4px;}
.rc-note .k{color:#1f4d3a;}
.rc-note-body{
  margin-top:5px;font-size:13px;line-height:1.7;color:var(--text);
  background:rgba(31,77,58,.05);border-left:3px solid #1f4d3a;
  border-radius:6px;padding:9px 12px;
}

@media (max-width:768px){
  .cat-tab{flex:1 1 auto;justify-content:center;font-size:13px;padding:8px 10px;}
  .qt-cat{flex:0 0 100%;text-align:left;}
}