:root{--bg:#f6f7f9;--card:#fff;--text:#111827;--muted:#667085;--line:#e5e7eb;--primary:#2563eb;--primary2:#1d4ed8;--shadow:0 10px 30px rgba(15,23,42,.055)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:"Noto Sans SC","Source Han Sans SC","思源黑体",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}.container{width:min(1120px,calc(100% - 32px));margin:auto}
.site-header{background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.nav{height:64px;display:flex;align-items:center;justify-content:space-between}.brand{font-size:19px;font-weight:900;display:flex;align-items:center;gap:9px}.brand-mark{width:29px;height:29px;display:grid;place-items:center;background:#111827;color:#fff;border-radius:8px;font-size:15px}.nav nav{display:flex;gap:26px;color:var(--muted);font-size:14px}.nav nav a:hover{color:var(--primary)}
.hero{padding:78px 0 46px;background:radial-gradient(circle at 85% 20%,#e8efff 0,transparent 32%),linear-gradient(180deg,#fff,#f6f7f9);border-bottom:1px solid var(--line)}.eyebrow{font-size:12px;font-weight:800;letter-spacing:.16em;color:var(--primary);margin:0 0 13px}.hero h1{font-size:clamp(38px,6vw,62px);font-weight:900;line-height:1.08;margin:0 0 18px;letter-spacing:-.055em}.hero h1 em{font-style:normal;color:var(--primary)}.hero-desc{font-size:17px;color:var(--muted);max-width:650px;margin:0 0 28px}.search-wrap{position:relative;width:min(720px,100%)}.search-wrap>span{position:absolute;left:18px;top:12px;font-size:25px;color:#98a2b3}.search-wrap input{width:100%;height:56px;border:1px solid var(--line);border-radius:15px;padding:0 78px 0 48px;font-size:16px;outline:none;background:#fff;box-shadow:var(--shadow)}.search-wrap input:focus{border-color:#9bb7f8;box-shadow:0 0 0 4px rgba(37,99,235,.08)}kbd{position:absolute;right:14px;top:15px;border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;padding:2px 7px;color:#98a2b3;background:#f8fafc;font-size:11px}.quick{display:flex;gap:14px;flex-wrap:wrap;margin-top:13px;font-size:13px;color:var(--muted)}.quick a{color:var(--primary)}
.tools-section{padding:46px 0 0}.section-title{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:17px}.section-title>div{display:flex;align-items:baseline;gap:12px}.section-title h2{font-size:22px;font-weight:900;margin:0}.section-title span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.12em}.section-title small{color:#98a2b3}.section-title small.coming{color:#b0b7c3;font-style:normal;border:1px solid #e5e7eb;border-radius:999px;padding:2px 10px;font-size:12px;background:#f8fafc}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.tool-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;min-height:132px;box-shadow:var(--shadow);transition:.18s transform,.18s border-color,.18s box-shadow;position:relative}.tool-card:hover{transform:translateY(-3px);border-color:#b8c9ef;box-shadow:0 14px 36px rgba(15,23,42,.09)}.tool-card i{font-style:normal;font-size:10px;font-weight:800;letter-spacing:.08em;color:var(--primary);background:#eff6ff;border-radius:6px;padding:3px 6px;display:inline-block;margin-bottom:10px}.tool-card b{display:block;font-size:17px;margin-bottom:5px}.tool-card span{display:block;color:var(--muted);font-size:14px}.tool-card.is-hidden{display:none}
.privacy-note{margin-top:52px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 20px;color:var(--muted);font-size:14px;display:flex;align-items:center;justify-content:space-between;gap:20px}.privacy-note p{margin:4px 0 0}.privacy-note strong{color:var(--text)}.local-badge{white-space:nowrap;border:1px solid #dbe3f4;color:var(--primary);background:#f8fbff;border-radius:999px;padding:5px 10px;font-size:10px;font-weight:800;letter-spacing:.08em}
footer{margin-top:70px;padding:27px 0;color:var(--muted);font-size:12px;border-top:1px solid var(--line);background:#fff}footer .container{display:flex;justify-content:space-between;gap:15px}
.tool-page{padding:48px 0 70px}.back{color:var(--primary);font-size:14px}.tool-head{margin:18px 0 26px}.tool-head h1{margin:0 0 7px;font-size:34px}.tool-head p{margin:0;color:var(--muted)}.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow)}.row{display:flex;gap:12px;flex-wrap:wrap}.col{flex:1;min-width:280px}label{font-size:13px;color:var(--muted);display:block;margin:0 0 7px}.editor{width:100%;min-height:300px;resize:vertical;border:1px solid var(--line);border-radius:10px;padding:14px;font:14px/1.6 ui-monospace,SFMono-Regular,Consolas,monospace;outline:none}.editor:focus{border-color:#9bb7f8;box-shadow:0 0 0 3px rgba(37,99,235,.08)}button,.button{border:0;border-radius:9px;background:var(--primary);color:#fff;padding:10px 15px;font-size:14px;cursor:pointer;display:inline-block}button:hover,.button:hover{background:var(--primary2)}.button.secondary,button.secondary{background:#eef2f7;color:#27364d}.actions{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}.status{min-height:24px;color:var(--muted);font-size:13px}.result{white-space:pre-wrap;word-break:break-word;background:#f8fafc;border:1px solid var(--line);border-radius:10px;padding:14px;min-height:120px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:14px}.stat{background:#f8fafc;border:1px solid var(--line);border-radius:10px;padding:12px}.stat b{display:block;font-size:20px}.stat span{font-size:12px;color:var(--muted)}.drop{border:2px dashed #cbd5e1;border-radius:14px;padding:36px;text-align:center;color:var(--muted);cursor:pointer}.drop.drag{border-color:var(--primary);background:#eff6ff}.drop input{display:none}.preview{max-width:100%;max-height:360px;border-radius:10px;display:block;margin:15px auto}.hidden{display:none!important}.ok{color:#15803d}.error{color:#b42318}
@media(max-width:760px){.tool-grid{grid-template-columns:1fr 1fr}.nav nav{display:none}.hero{padding:56px 0 40px}.stats{grid-template-columns:1fr 1fr}.privacy-note{align-items:flex-start}.local-badge{display:none}footer .container{flex-direction:column}}@media(max-width:480px){.tool-grid{grid-template-columns:1fr}.tool-page{padding-top:32px}.col{min-width:100%}.hero h1{font-size:39px}.search-wrap kbd{display:none}}