:root{--ink:#0a1628;--muted:#5f6b7a;--line:#e5eaf0;--soft:#f4f7fb;--page:#f8fafc;--white:#fff;--brand:#2563eb;--brand-dark:#1d4ed8;--brand-soft:#eff6ff;--green:#087f5b;--green-soft:#eafaf3;--danger:#b42318;--shadow:0 10px 30px rgba(15,23,42,.06)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--page);color:var(--ink);font-family:PingFang SC,Microsoft YaHei,system-ui,-apple-system,sans-serif;line-height:1.6}button,input,textarea{font:inherit}button{cursor:pointer}.nav{height:68px;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(14px)}.nav-container{max-width:1120px;height:100%;margin:auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between}.nav-logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:17px;font-weight:700;text-decoration:none}.logo-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:9px;background:var(--brand);color:#fff}.nav-links{display:flex;gap:28px;align-items:center}.nav-link{color:var(--muted);font-size:14px;font-weight:600;text-decoration:none}.nav-link:hover,.nav-link.active{color:var(--brand)}.nav-cta{padding:9px 16px;border-radius:8px;background:var(--brand);color:#fff!important}.page{max-width:1080px;margin:auto;padding:38px 20px 64px}.back-link{display:inline-flex;align-items:center;gap:6px;margin-bottom:22px;color:var(--muted);font-size:14px;text-decoration:none}.back-link:hover{color:var(--brand)}.hero{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;margin-bottom:30px}.hero-main{display:flex;gap:18px;align-items:flex-start}.hero-icon{width:58px;height:58px;flex:none;display:grid;place-items:center;border-radius:16px;color:var(--brand);background:var(--brand-soft)}.hero h1{margin:0 0 5px;font-size:32px;line-height:1.3;letter-spacing:-.02em}.hero p{margin:0;color:var(--muted);font-size:15px}.privacy{display:inline-flex;align-items:center;gap:5px;margin-left:9px;padding:4px 9px;border-radius:99px;background:var(--green-soft);color:var(--green);font-size:12px;font-weight:600;vertical-align:middle}.hero-actions{display:flex;gap:8px}.quiet-btn{border:1px solid var(--line);background:#fff;color:var(--muted);border-radius:9px;padding:9px 13px;display:flex;align-items:center;gap:6px}.quiet-btn:hover{border-color:#bfdbfe;color:var(--brand)}.tabs{display:flex;gap:7px;margin-bottom:20px;overflow-x:auto;padding-bottom:2px;scrollbar-width:none}.tabs::-webkit-scrollbar{display:none}.tab{white-space:nowrap;border:0;border-radius:9px;padding:10px 17px;background:var(--soft);color:var(--muted);font-weight:600;font-size:14px;transition:.2s}.tab:hover{color:var(--brand)}.tab.active{color:#fff;background:var(--brand);box-shadow:0 5px 14px #2563eb38}.panel{display:none}.panel.active{display:block}.card{background:var(--white);border:1px solid var(--line);border-radius:15px;padding:25px;margin-bottom:20px;box-shadow:var(--shadow)}.card-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.card h2{font-size:18px;margin:0}.card-note{color:var(--muted);font-size:13px}.field-label{display:block;margin-bottom:7px;font-size:14px;font-weight:650}.input-row{display:grid;grid-template-columns:1fr auto;gap:10px}.input-wrap{position:relative}.main-input,.batch-input{width:100%;border:1px solid #dce2ea;border-radius:10px;background:#fff;color:var(--ink);outline:0;transition:.2s}.main-input{height:50px;padding:0 48px 0 15px;font:500 17px ui-monospace,SFMono-Regular,Menlo,monospace}.batch-input{min-height:150px;padding:13px 15px;resize:vertical;font:500 15px/1.8 ui-monospace,SFMono-Regular,Menlo,monospace}.main-input:focus,.batch-input:focus{border-color:var(--brand);box-shadow:0 0 0 3px #2563eb1c}.input-suffix{position:absolute;right:15px;top:12px;color:#94a3b8}.primary-btn{height:50px;border:0;border-radius:10px;padding:0 24px;background:var(--brand);color:#fff;font-weight:650;transition:.2s}.primary-btn:hover{background:var(--brand-dark)}.quick-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.chip{border:1px solid var(--line);background:var(--soft);color:var(--muted);padding:6px 11px;border-radius:99px;font-size:12px}.chip:hover{border-color:#bfdbfe;background:var(--brand-soft);color:var(--brand)}.error{min-height:22px;margin-top:8px;color:var(--danger);font-size:13px}.result-box{margin-top:18px;border-radius:11px;background:var(--soft);padding:16px}.result-top{display:flex;justify-content:space-between;gap:14px;align-items:center}.result-label{color:var(--muted);font-size:13px}.result-value{margin:7px 0 0;color:var(--ink);font-size:19px;font-weight:650;word-break:break-all;min-height:30px}.copy-btn{border:1px solid #cbd5e1;border-radius:8px;background:#fff;color:#475569;padding:7px 11px;display:flex;align-items:center;gap:5px;white-space:nowrap}.copy-btn:hover{border-color:#93c5fd;color:var(--brand)}.meta-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:12px}.meta-item{background:#fff;border:1px solid var(--line);border-radius:9px;padding:11px}.meta-item span{display:block;color:var(--muted);font-size:12px}.meta-item strong{display:block;margin-top:3px;font-size:14px}.batch-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px}.batch-actions .primary-btn{height:42px}.batch-output{margin-top:16px;display:grid;gap:8px}.batch-row{display:grid;grid-template-columns:minmax(100px,.45fr) 1fr auto;gap:12px;align-items:center;padding:11px 12px;background:var(--soft);border-radius:9px}.batch-source{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--muted);overflow:hidden;text-overflow:ellipsis}.batch-result{font-weight:600;word-break:break-all}.icon-btn{border:0;background:transparent;color:var(--muted);padding:5px}.icon-btn:hover{color:var(--brand)}.table-wrap{overflow-x:auto}.digit-table{width:100%;border-collapse:collapse;min-width:620px}.digit-table th,.digit-table td{text-align:center;padding:12px 8px;border-bottom:1px solid var(--line)}.digit-table th{color:var(--muted);font-size:13px;background:var(--soft)}.digit-table td strong{color:var(--brand);font-size:18px}.history-empty{text-align:center;color:var(--muted);padding:30px 10px}.history-list{display:grid;gap:8px}.history-row{display:flex;justify-content:space-between;gap:18px;align-items:center;border-bottom:1px solid var(--line);padding:12px 2px}.history-row:last-child{border-bottom:0}.history-text{min-width:0}.history-text strong,.history-text span{display:block}.history-text strong{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.history-text span{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.danger-btn{border:0;background:transparent;color:var(--danger);font-size:13px}.knowledge-section{margin-top:34px;background:#fff;border:1px solid var(--line);border-radius:15px;padding:28px;box-shadow:var(--shadow)}.section-title{margin:0 0 9px;padding-bottom:13px;border-bottom:2px solid var(--line);font-size:22px;letter-spacing:-.02em}.section-intro{margin:0 0 4px;color:var(--muted);font-size:14px}.knowledge-grid{display:block}.knowledge-card{padding:21px 0;border:0;border-bottom:1px solid var(--line);border-radius:0}.knowledge-card:last-child{padding-bottom:0;border-bottom:0}.knowledge-card h2{font-size:16px;margin:0 0 8px}.knowledge-card p,.knowledge-card li{margin:0;color:#4b5563;font-size:14px}.knowledge-card ul{margin:0;padding-left:20px}.source{display:flex;align-items:flex-start;gap:6px;margin-top:10px;color:#94a3b8;font-size:12px}.source svg{flex:none;margin-top:2px;color:var(--brand)}.source a{color:var(--brand);text-decoration:none}.source a:hover{text-decoration:underline}.source strong{color:#64748b}.faq{margin-top:20px}.faq h2{font-size:22px}.faq details{background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:9px;padding:0 16px}.faq summary{cursor:pointer;font-weight:600;padding:15px 0}.faq p{color:var(--muted);font-size:14px;margin:0 0 15px}.toast{position:fixed;left:50%;bottom:28px;z-index:50;transform:translate(-50%,18px);padding:9px 15px;border-radius:8px;background:var(--ink);color:#fff;font-size:13px;opacity:0;pointer-events:none;transition:.2s}.toast.show{opacity:1;transform:translate(-50%)}.aw-footer{border-top:1px solid var(--line);background:#fff;padding:28px 15px;text-align:center;color:var(--muted);font-size:12px}.aw-footer a{color:inherit}:focus-visible{outline:3px solid rgba(37,99,235,.32);outline-offset:2px}@media (max-width:760px){.nav-links{display:none}.page{padding-top:25px}.hero{display:block}.hero h1{font-size:27px}.hero-main{gap:13px}.hero-icon{width:50px;height:50px}.privacy{display:flex;width:max-content;margin:7px 0 0}.hero-actions{margin:18px 0 0 63px}.input-row{grid-template-columns:1fr}.primary-btn{width:100%}.meta-grid{grid-template-columns:1fr}.knowledge-section{padding:20px}.knowledge-card{padding:18px 0}.batch-row{grid-template-columns:1fr auto}.batch-source{grid-column:1/-1}.card{padding:19px}.card-head,.result-top{align-items:flex-start}.nav-container{padding:0 16px}}@media (prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}
