/* ============================================================
   查询网 chaxun.org - 全站样式
   ============================================================ */
:root{
  --bg:#f4f6fb; --card:#ffffff; --card-2:#f8fafc;
  --text:#1e293b; --muted:#64748b; --border:#e2e8f0;
  --primary:#2563eb; --primary-h:#1d4ed8; --primary-soft:#eff6ff;
  --grad:linear-gradient(135deg,#2563eb 0%,#4f46e5 55%,#7c3aed 100%);
  --shadow:0 1px 2px rgba(15,23,42,.05),0 8px 24px -12px rgba(15,23,42,.12);
  --shadow-h:0 4px 8px rgba(15,23,42,.06),0 16px 36px -12px rgba(37,99,235,.25);
  --radius:14px; --radius-s:10px;
  --code-bg:#f1f5f9;
}
[data-theme="dark"]{
  --bg:#0b1220; --card:#101a2e; --card-2:#0d1628;
  --text:#e2e8f0; --muted:#8fa3bd; --border:#22304a;
  --primary:#3b82f6; --primary-h:#60a5fa; --primary-soft:#16233d;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 28px -14px rgba(0,0,0,.5);
  --shadow-h:0 6px 12px rgba(0,0,0,.35),0 18px 40px -12px rgba(59,130,246,.35);
  --code-bg:#0d1526;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);font-size:15px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-h)}
img{max-width:100%}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.skip-link{position:absolute;left:-9999px}
.skip-link:focus{left:8px;top:8px;background:var(--card);padding:6px 12px;border-radius:8px;z-index:999}

/* ---------------- 顶栏 ---------------- */
.topbar{position:sticky;top:0;z-index:100;background:color-mix(in srgb,var(--card) 86%,transparent);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.topbar-in{display:flex;align-items:center;gap:18px;height:60px}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:19px;color:var(--text);white-space:nowrap}
.logo:hover{color:var(--text)}
.logo-mark{width:34px;height:34px;border-radius:9px;background:var(--grad);color:#fff;display:flex;
  align-items:center;justify-content:center;font-size:18px;font-weight:800;box-shadow:0 4px 10px -2px rgba(37,99,235,.5)}
.logo-sub{font-size:11px;font-weight:500;color:var(--muted);margin-top:6px}
.nav{display:flex;align-items:center;gap:2px;flex:1}
.nav-link{padding:7px 12px;border-radius:9px;color:var(--text);font-size:14.5px;background:none;border:0;cursor:pointer;font-family:inherit}
.nav-link:hover{background:var(--primary-soft);color:var(--primary)}
.nav-drop{position:relative}
.nav-drop-btn .caret{font-size:10px;margin-left:3px;opacity:.6}
.nav-drop-menu{position:absolute;top:calc(100% + 8px);left:0;background:var(--card);border:1px solid var(--border);
  border-radius:12px;box-shadow:var(--shadow-h);padding:6px;min-width:200px;display:none;flex-direction:column;z-index:120}
.nav-drop-menu.open{display:flex}
.nav-drop-menu a{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:8px 12px;border-radius:8px;color:var(--text);font-size:14px}
.nav-drop-menu a:hover{background:var(--primary-soft);color:var(--primary)}
.nav-drop-count{font-size:12px;color:var(--muted)}
.topbar-right{display:flex;align-items:center;gap:8px;margin-left:auto}
.icon-btn{width:36px;height:36px;border-radius:9px;border:1px solid var(--border);background:var(--card);
  cursor:pointer;font-size:15px;color:var(--text);display:flex;align-items:center;justify-content:center}
.icon-btn:hover{border-color:var(--primary);color:var(--primary)}
.nav-burger{display:none}

/* ---------------- 搜索 ---------------- */
.cx-search{position:relative;width:250px}
.search-ico{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--muted);pointer-events:none}
.cx-search .search-input{width:100%;height:36px;padding:0 12px 0 34px;border:1px solid var(--border);border-radius:10px;
  background:var(--card-2);color:var(--text);font-size:13.5px;outline:none;font-family:inherit;transition:border .15s}
.search-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 15%,transparent)}
.search-drop{position:absolute;top:calc(100% + 6px);left:0;right:0;background:var(--card);border:1px solid var(--border);
  border-radius:12px;box-shadow:var(--shadow-h);max-height:380px;overflow:auto;z-index:130;padding:5px}
.search-drop a{display:flex;gap:9px;align-items:center;padding:8px 10px;border-radius:8px;color:var(--text)}
.search-drop a:hover,.search-drop a.active{background:var(--primary-soft)}
.search-drop .sd-name{font-size:14px;font-weight:600}
.search-drop .sd-desc{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.search-drop .sd-ico{font-size:17px;flex:none}
.search-drop .sd-cat{margin-left:auto;flex:none;font-size:11px;color:var(--muted);border:1px solid var(--border);border-radius:6px;padding:1px 6px}
.search-empty{padding:14px;text-align:center;color:var(--muted);font-size:13px}
.cx-search.lg{width:100%;max-width:560px;margin:0 auto}
.cx-search.lg .search-input{height:48px;font-size:15px;border-radius:13px;padding-left:42px}
.cx-search.lg .search-ico{left:15px;width:18px;height:18px}

/* ---------------- Hero ---------------- */
.hero{background:var(--grad);color:#fff;padding:58px 0 66px;position:relative;overflow:hidden}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.08)}
.hero::before{width:340px;height:340px;right:-80px;top:-120px}
.hero::after{width:220px;height:220px;left:-60px;bottom:-100px}
.hero-in{position:relative;z-index:1;text-align:center}
.hero h1{font-size:34px;margin:0 0 10px;font-weight:800;letter-spacing:.5px}
.hero p{margin:0 auto;opacity:.92;font-size:16px;max-width:680px}
.hero .cx-search{margin-top:26px}
.hero-stats{margin-top:22px;display:flex;justify-content:center;gap:10px;flex-wrap:wrap}
.hero-stats .stat{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);border-radius:99px;
  padding:5px 16px;font-size:13.5px;backdrop-filter:blur(4px)}
.hero-stats b{font-size:16px}

/* ---------------- 分类 chips ---------------- */
.chips{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;padding:26px 0 4px}
.chip{display:inline-flex;align-items:center;gap:7px;padding:8px 16px;border-radius:99px;background:var(--card);
  border:1px solid var(--border);color:var(--text);font-size:14px;box-shadow:var(--shadow);transition:.15s}
.chip:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.chip .n{font-size:12px;color:var(--muted)}

/* ---------------- 分类区块与卡片 ---------------- */
.wrap{padding:20px 0 30px}
.cat-section{margin:34px 0;scroll-margin-top:80px}
.cat-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.cat-ico{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;flex:none}
.cat-head h2{font-size:20px;margin:0}
.cat-head p{margin:0;font-size:13px;color:var(--muted)}
.cat-head .more{margin-left:auto;font-size:13.5px}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(224px,1fr));gap:14px}
.tool-card{display:flex;flex-direction:column;gap:8px;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);transition:.18s;color:var(--text);position:relative}
.tool-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:color-mix(in srgb,var(--primary) 45%,var(--border));color:var(--text)}
.tc-top{display:flex;align-items:center;gap:10px}
.tc-ico{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:19px;flex:none;
  background:var(--primary-soft)}
.tool-card h3{margin:0;font-size:15.5px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tool-card p{margin:0;font-size:12.5px;color:var(--muted);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:39px}

/* 分类色（卡片图标底色） */
.cat-text .cat-ico,.cat-text .tc-ico{background:#eff6ff}
.cat-language .cat-ico,.cat-language .tc-ico{background:#fdf2f8}
.cat-query .cat-ico,.cat-query .tc-ico{background:#f0fdf4}
.cat-dev .cat-ico,.cat-dev .tc-ico{background:#f5f3ff}
.cat-encode .cat-ico,.cat-encode .tc-ico{background:#fff7ed}
.cat-convert .cat-ico,.cat-convert .tc-ico{background:#ecfeff}
.cat-time .cat-ico,.cat-time .tc-ico{background:#fefce8}
.cat-finance .cat-ico,.cat-finance .tc-ico{background:#f0fdfa}
.cat-image .cat-ico,.cat-image .tc-ico{background:#faf5ff}
.cat-network .cat-ico,.cat-network .tc-ico{background:#f1f5f9}
[data-theme="dark"] .cat-ico,[data-theme="dark"] .tc-ico{background:var(--primary-soft)}

/* 最近使用 */
.recent-sec .tool-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}

/* ---------------- 面包屑 ---------------- */
.crumbs{padding:18px 0 0;font-size:13.5px;color:var(--muted)}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{margin:0 7px;opacity:.5}

/* ---------------- 工具页主体 ---------------- */
.tool-wrap{margin:14px auto 40px}
.tool-head{margin:10px 0 18px}
.tool-head h1{font-size:26px;margin:0 0 6px;display:flex;align-items:center;gap:12px}
.tool-head h1 .h1-ico{font-size:30px}
.tool-head p{margin:0;color:var(--muted);font-size:14px}
.panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:22px;margin-bottom:18px}
.panel h2{font-size:17px;margin:0 0 14px}
.panel h3{font-size:15px;margin:18px 0 10px}
.panel+.panel{margin-top:18px}

/* 表单元素 */
.field{margin-bottom:14px}
.field>label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px}
.field .tip{font-size:12px;color:var(--muted);font-weight:400;margin-left:6px}
input[type=text],input[type=number],input[type=date],input[type=datetime-local],input[type=search],input[type=password],input[type=url],select,textarea{
  width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:var(--radius-s);background:var(--card-2);
  color:var(--text);font-size:14px;outline:none;font-family:inherit;transition:border .15s}
input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 15%,transparent)}
textarea{min-height:150px;resize:vertical;line-height:1.6}
textarea.mono,pre.mono,.mono{font-family:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace}
select{cursor:pointer;appearance:auto}
input[type=color]{width:46px;height:36px;border:1px solid var(--border);border-radius:8px;background:var(--card-2);padding:2px;cursor:pointer}
input[type=range]{accent-color:var(--primary)}
input[type=checkbox],input[type=radio]{accent-color:var(--primary);width:15px;height:15px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border-radius:var(--radius-s);
  border:1px solid transparent;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit;transition:.15s;line-height:1.4}
.btn.primary{background:var(--primary);color:#fff}
.btn.primary:hover{background:var(--primary-h);color:#fff}
.btn.ghost{background:var(--card);border-color:var(--border);color:var(--text)}
.btn.ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn.soft{background:var(--primary-soft);color:var(--primary)}
.btn.soft:hover{background:color-mix(in srgb,var(--primary) 18%,var(--card))}
.btn.danger{background:#fee2e2;color:#b91c1c}
.btn.small{padding:5px 12px;font-size:13px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}

/* 结果与输出 */
.result-box{background:var(--code-bg);border:1px solid var(--border);border-radius:var(--radius-s);padding:12px 14px;
  min-height:46px;white-space:pre-wrap;word-break:break-all;font-size:14px;line-height:1.7;position:relative}
.result-box.big{min-height:110px}
.result-box .num{font-size:22px;font-weight:800;color:var(--primary)}
.copy-btn{position:absolute;top:8px;right:8px;opacity:.7}
.copy-btn:hover{opacity:1}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media (max-width:720px){.grid2,.grid3,.grid4{grid-template-columns:1fr}}

/* 表格 */
.table{width:100%;border-collapse:collapse;font-size:13.5px}
.table th,.table td{padding:9px 12px;border-bottom:1px solid var(--border);text-align:left;word-break:break-all}
.table th{background:var(--card-2);font-weight:600;color:var(--muted);white-space:nowrap}
.table tr:hover td{background:color-mix(in srgb,var(--primary-soft) 60%,transparent)}
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius-s)}

/* 标签 / 提示 */
.tag{display:inline-block;padding:2px 9px;border-radius:6px;font-size:12px;background:var(--primary-soft);color:var(--primary)}
.tag.green{background:#dcfce7;color:#15803d}
.tag.red{background:#fee2e2;color:#b91c1c}
.tag.orange{background:#ffedd5;color:#c2410c}
.tag.gray{background:var(--card-2);color:var(--muted)}
[data-theme="dark"] .tag.green{background:#14301f;color:#4ade80}
[data-theme="dark"] .tag.red{background:#3b1414;color:#f87171}
[data-theme="dark"] .tag.orange{background:#3a230d;color:#fb923c}
.notice{background:var(--primary-soft);border:1px solid color-mix(in srgb,var(--primary) 25%,transparent);
  border-radius:var(--radius-s);padding:10px 14px;font-size:13.5px;color:var(--text)}
.notice.warn{background:#fffbeb;border-color:#fde68a;color:#92400e}
[data-theme="dark"] .notice.warn{background:#2e2305;border-color:#574a12;color:#fbbf24}
.notice.green{background:#f0fdf4;border-color:#bbf7d0;color:#166534}
[data-theme="dark"] .notice.green{background:#0e2a18;border-color:#14532d;color:#4ade80}
.notice b{font-weight:700}

/* 拼音/ ruby */
ruby{ruby-align:center}
ruby rt{font-size:.55em;color:var(--primary);user-select:none}

/* 键盘 */
kbd{background:var(--code-bg);border:1px solid var(--border);border-bottom-width:2px;border-radius:6px;
  padding:1px 6px;font-size:12px;font-family:ui-monospace,Consolas,monospace}

/* 工具页底部导航 */
.tool-nav{display:flex;gap:10px;flex-wrap:wrap;padding:6px 0 30px}
.tool-nav a{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;color:var(--muted);
  border:1px solid var(--border);background:var(--card);padding:6px 13px;border-radius:99px}
.tool-nav a:hover{color:var(--primary);border-color:var(--primary)}

/* ---------------- 页脚 ---------------- */
.footer{border-top:1px solid var(--border);background:var(--card);margin-top:40px;padding:34px 0 0}
.foot-in{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:26px;padding-bottom:26px}
.foot-logo{font-weight:800;font-size:17px;display:flex;align-items:center;gap:8px}
.foot-desc{font-size:13px;color:var(--muted);margin:10px 0 0;line-height:1.7}
.foot-col h4{font-size:14px;margin:4px 0 12px}
.foot-links{display:flex;flex-direction:column;gap:8px;font-size:13.5px}
.foot-links a{color:var(--muted)}
.foot-links a:hover{color:var(--primary)}
.foot-muted{color:var(--muted);font-size:13px}
.foot-bottom{border-top:1px solid var(--border);padding:14px 20px;display:flex;gap:18px;flex-wrap:wrap;
  font-size:12.5px;color:var(--muted)}
.foot-bottom a{color:var(--muted)}

/* ---------------- 浮动按钮 / Toast ---------------- */
.fab{position:fixed;right:22px;bottom:26px;width:42px;height:42px;border-radius:12px;border:1px solid var(--border);
  background:var(--card);color:var(--primary);font-size:17px;cursor:pointer;box-shadow:var(--shadow-h);z-index:90}
.fab:hover{border-color:var(--primary)}
.toast{position:fixed;left:50%;bottom:34px;transform:translateX(-50%);background:#111827;color:#fff;
  padding:9px 20px;border-radius:99px;font-size:13.5px;z-index:200;box-shadow:0 10px 30px rgba(0,0,0,.35);
  animation:toastIn .2s ease}
[data-theme="dark"] .toast{background:#e2e8f0;color:#0f172a}
@keyframes toastIn{from{opacity:0;transform:translate(-50%,8px)}to{opacity:1;transform:translate(-50%,0)}}

/* ---------------- 建设中占位 ---------------- */
.wip{padding:60px 20px;text-align:center;color:var(--muted)}
.wip .big{font-size:52px;margin-bottom:12px}
.wip h2{color:var(--text);margin:0 0 8px}
.wip p{margin:0 0 18px}

/* ---------------- 404 ---------------- */
.nf{padding:80px 20px;text-align:center}
.nf h1{font-size:64px;margin:0;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nf p{color:var(--muted)}

/* ---------------- 响应式 ---------------- */
@media (max-width:860px){
  .nav{display:none;position:absolute;top:60px;left:0;right:0;background:var(--card);border-bottom:1px solid var(--border);
    flex-direction:column;align-items:stretch;padding:10px 16px;gap:4px;z-index:110;box-shadow:var(--shadow-h)}
  .nav.open{display:flex}
  .nav-drop-menu{position:static;display:none;box-shadow:none;border:0;padding-left:14px}
  .nav-drop-menu.open{display:flex}
  .nav-burger{display:flex}
  .cx-search{width:100%}
  .topbar-in{gap:10px}
  .hero h1{font-size:26px}
  .hero{padding:40px 0 48px}
  .foot-in{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  .logo-sub{display:none}
  .tool-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .tool-card{padding:12px}
  .tool-card p{display:none}
  .tool-card h3{font-size:14px}
  .foot-in{grid-template-columns:1fr}
  .tool-head h1{font-size:21px}
}