:root{
  --bg:#f6f7fb;--card:#fff;--text:#1f2330;--sub:#6b7280;
  --primary:#4f6ef7;--primary-2:#7a5cff;--border:#e8eaf2;--ok:#22c55e;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei","Segoe UI Emoji","Apple Color Emoji","Noto Color Emoji",sans-serif;background:var(--bg);color:var(--text);min-height:100vh;display:flex;flex-direction:column}
a{color:inherit;text-decoration:none}
/* header */
.hd{background:linear-gradient(120deg,var(--primary),var(--primary-2));color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 2px 12px rgba(31,35,48,.15)}
.hd-in{max-width:1080px;margin:0 auto;padding:10px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.logo{font-weight:700;font-size:17px;white-space:nowrap;display:inline-flex;align-items:center;gap:6px}
.hd nav{display:flex;gap:6px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;min-width:0}
.hd nav::-webkit-scrollbar{display:none}
.hd nav a{margin:0;padding:6px 13px;font-size:13px;opacity:1;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.18);border-radius:999px;white-space:nowrap;transition:.15s}
.hd nav a:hover{background:rgba(255,255,255,.3);text-decoration:none}
@media(max-width:640px){.hd-in{padding:10px 12px}.logo{font-size:16px}.hd nav{max-width:calc(100vw - 96px)}}
/* main */
.main{max-width:1080px;margin:0 auto;padding:24px 16px 40px;width:100%;flex:1}
.hero{text-align:center;margin-bottom:28px}
.hero h1{font-size:26px;margin-bottom:8px}
.hero p{color:var(--sub);font-size:14px}
.search{margin-top:18px;max-width:480px;width:100%;padding:12px 16px;border-radius:12px;border:1px solid var(--border);box-shadow:0 8px 24px rgba(31,35,48,.06);font-size:14px;outline:none}
.cat{margin-bottom:30px}
.cat-t{display:flex;align-items:center;gap:14px;font-size:17px;font-weight:700;margin-bottom:14px}
.cat-t::before,.cat-t::after{content:"";flex:1;height:1px;background:var(--border)}
.cat-t a{color:var(--text)}
.cat-t a:hover{color:var(--primary)}
.cat-h1{font-size:24px;margin-bottom:10px}
.cat-desc{color:var(--sub);font-size:14px;line-height:1.9}
/* 动画操作演示 */
.g-stage{position:relative;background:#fafbff;border:1px solid var(--border);border-radius:12px;padding:18px;overflow:hidden}
.g-cursor{position:absolute;left:20px;top:20px;font-size:20px;z-index:5;transition:left .6s cubic-bezier(.4,0,.2,1),top .6s cubic-bezier(.4,0,.2,1);pointer-events:none;filter:drop-shadow(0 2px 3px rgba(0,0,0,.25))}
.g-field{margin-bottom:12px}
.g-lab{font-size:12px;color:var(--sub);margin-bottom:4px}
.g-inp{background:#fff;border:1px solid var(--border);border-radius:8px;padding:9px 12px;min-height:20px;font-size:14px}
.g-area{background:#fff;border:1px solid var(--border);border-radius:8px;padding:9px 12px;min-height:52px;font-size:14px}
.g-txt.g-caret-on::after{content:"▌";color:var(--primary);animation:blink .8s infinite}
@keyframes blink{50%{opacity:0}}
.g-chks{display:flex;gap:8px;flex-wrap:wrap}
.g-chk{font-size:12px;background:#eef1ff;color:var(--primary);border-radius:999px;padding:5px 12px}
.g-btn{display:inline-block;background:var(--primary);color:#fff;font-size:14px;border-radius:10px;padding:10px 22px;margin-top:4px;cursor:pointer;transition:transform .15s}
.g-btn.g-press,.g-press{transform:scale(.93);box-shadow:0 0 0 4px rgba(79,110,247,.25)}
.g-hl-on{outline:2px solid var(--ok);outline-offset:2px;border-radius:8px}
.g-res{margin-top:12px;padding:12px;background:#f0fdf4;border:1px dashed var(--ok);border-radius:10px;font-size:13px;line-height:1.9}
.g-res.hidden{display:none}
.g-res b{display:block;font-size:16px;color:#047857}
.g-res span{color:var(--sub)}
.g-res i{font-style:normal;color:#047857;font-size:12px}
.g-mono{font-family:ui-monospace,Consolas,monospace;letter-spacing:1px}
.g-stats{display:flex;gap:8px;margin:10px 0;flex-wrap:wrap}
.g-stats span{font-size:12px;background:#f4f6ff;color:var(--primary);border-radius:999px;padding:4px 10px}
.g-bar{display:flex;align-items:center;gap:12px;margin-top:12px;flex-wrap:wrap}
.g-replay{padding:7px 14px;font-size:13px}
.g-caption{flex:1;font-size:14px;font-weight:600;min-width:200px}
.g-dots{display:flex;gap:5px}
.g-dots i{width:8px;height:8px;border-radius:50%;background:#d8dcf0;transition:.3s}
.g-dots i.on{background:var(--primary);transform:scale(1.25)}
/* AI 引擎友好：一句话答案块（豆包/GEO 优化） */
.ai-answer{background:#fffbeb;border:1px solid #fde68a;border-left:4px solid #f59e0b;border-radius:12px;padding:14px 18px;margin-bottom:20px}
.ai-answer strong{display:inline-block;font-size:12px;color:#b45309;background:#fef3c7;border-radius:6px;padding:2px 8px;margin-bottom:6px}
.ai-answer p{font-size:15px;line-height:1.9;color:#374151}
.upd{font-size:13px;color:var(--sub);margin:-8px 0 14px}
/* 表格（房贷/个税等计算结果） */
.repay-wrap{max-height:320px;overflow:auto;margin-top:14px;border:1px solid var(--border);border-radius:10px}
.repay-table{width:100%;border-collapse:collapse;font-size:13px;white-space:nowrap}
.repay-table th,.repay-table td{padding:8px 12px;border-bottom:1px solid var(--border);text-align:right}
.repay-table th{background:#f4f6ff;position:sticky;top:0}
.repay-table td:first-child,.repay-table th:first-child{text-align:left}
.summary{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin-top:14px}
.summary .s-item{background:#f4f6ff;border-radius:10px;padding:12px;text-align:center}
.summary .s-item b{display:block;font-size:18px;color:var(--primary);margin-top:4px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:12px}
.card{display:flex;align-items:center;gap:14px;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:14px 16px;transition:.18s}
.card:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(79,110,247,.14);border-color:var(--primary)}
.tile{flex:0 0 52px;width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:26px;color:#fff;box-shadow:0 4px 10px rgba(15,18,30,.18);font-family:"Segoe UI Emoji","Apple Color Emoji","Noto Color Emoji",sans-serif}
.c-body{display:flex;flex-direction:column;min-width:0}
.card .name{font-weight:600;font-size:15px}
.card .desc{font-size:12px;color:var(--sub);margin-top:3px;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
/* 图标磁贴配色（按 slug 哈希取色，同工具恒定） */
.t0{background:linear-gradient(135deg,#4f6ef7,#7a5cff)}
.t1{background:linear-gradient(135deg,#ff7043,#f4511e)}
.t2{background:linear-gradient(135deg,#26a69a,#00897b)}
.t3{background:linear-gradient(135deg,#ec407a,#d81b60)}
.t4{background:linear-gradient(135deg,#5c6bc0,#3949ab)}
.t5{background:linear-gradient(135deg,#ffa726,#fb8c00)}
.t6{background:linear-gradient(135deg,#66bb6a,#43a047)}
.t7{background:linear-gradient(135deg,#29b6f6,#0288d1)}
.t8{background:linear-gradient(135deg,#8d6e63,#6d4c41)}
.t9{background:linear-gradient(135deg,#7e57c2,#512da8)}
/* tool page */
.crumb{font-size:13px;color:var(--sub);margin-bottom:14px}
.crumb a:hover{color:var(--primary)}
.tool-page h1{font-size:24px;margin-bottom:16px}
.app-box{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:22px;margin-bottom:26px;box-shadow:0 4px 16px rgba(31,35,48,.04)}
.seo-block{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px 22px;margin-bottom:16px;line-height:1.9}
.seo-block h2{font-size:17px;margin-bottom:10px;padding-left:10px;border-left:4px solid var(--primary)}
.seo-block p{color:#374151;font-size:14px}
.seo-block ol,.seo-block li{font-size:14px;color:#374151}
.seo-block ol{padding-left:22px}
.faq{margin-bottom:12px}
.faq h3{font-size:14px;margin-bottom:4px}
.faq p{font-size:13px;color:var(--sub)}
.rel{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:10px}
.rel a{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:600;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:10px 12px;color:var(--text)}
.rel a:hover{border-color:var(--primary);background:#f8f9ff}
.rel .tile{flex:0 0 34px;width:34px;height:34px;border-radius:9px;font-size:17px;box-shadow:0 2px 6px rgba(15,18,30,.15)}
/* form controls (工具内部) */
label{display:block;font-size:13px;color:var(--sub);margin:12px 0 6px}
input[type=number],input[type=text],input[type=password],select,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;font-size:14px;outline:none;font-family:inherit}
textarea{min-height:110px;resize:vertical}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.btn{background:var(--primary);color:#fff;border:none;border-radius:10px;padding:10px 18px;font-size:14px;cursor:pointer}
.btn:hover{opacity:.92}
.btn.ghost{background:#eef1ff;color:var(--primary)}
.result{margin-top:12px;padding:12px;background:#f4f6ff;border:1px dashed var(--primary);border-radius:10px;font-size:14px;word-break:break-all;white-space:pre-wrap}
.result.hidden{display:none}
.chk{display:inline-flex;align-items:center;gap:5px;font-size:13px;color:var(--text);margin-right:12px}
.stats{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.chip{font-size:12px;background:#f4f6ff;color:var(--primary);border-radius:999px;padding:4px 10px}
/* keyboard test */
.kbd-grid{display:grid;grid-template-columns:repeat(10,1fr);gap:4px;margin-top:12px}
.kbd{height:34px;border:1px solid var(--border);border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--sub);background:#fafbff}
.kbd.on{background:var(--ok);color:#fff;border-color:var(--ok)}
/* misc */
.dot-screen{position:fixed;inset:0;z-index:99;display:none;cursor:pointer}
.dot-screen.on{display:block}
.dot-tip{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;color:#fff;font-size:14px;pointer-events:none;text-shadow:0 0 4px rgba(0,0,0,.8)}
.dot-tip.on{display:flex}
/* admin */
.tbl{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden;font-size:14px}
.tbl th,.tbl td{padding:12px 14px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}
.tbl th{background:#f4f6ff}
.edit-form{max-width:720px}
.edit-form label{margin-top:14px}
.ok-msg{background:#ecfdf5;color:#047857;border:1px solid #a7f3d0;border-radius:10px;padding:10px 14px;font-size:14px}
.row2{display:flex;gap:14px}.row2>div{flex:1}
.ft{text-align:center;color:var(--sub);font-size:12px;padding:20px 16px 36px;line-height:2}
@media(max-width:640px){.grid{grid-template-columns:1fr}.hero h1{font-size:21px}}