:root{color-scheme:light;--background:#f6f8fb;--surface:#ffffff;--surface-muted:#eef3f8;--text:#18202a;--muted:#5e6b7a;--line:#dce4ee;--accent:#0f766e;--accent-strong:#0b5f59;--danger:#b42318;--shadow:0 14px 35px rgba(28,43,59,0.08)}*{box-sizing:border-box}body,html{background:var(--background);max-width:100%;overflow-x:hidden}body{margin:0;color:var(--text);font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}input,textarea{width:100%;border:1px solid var(--line);border-radius:8px;color:var(--text);background:#fbfdff;padding:12px 14px}textarea{min-height:150px;resize:vertical;line-height:1.55;font-family:SFMono-Regular,Consolas,Liberation Mono,monospace}input{min-height:46px}.page-shell{width:min(1180px,calc(100% - 32px));max-width:calc(100vw - 32px);margin:0 auto;padding:22px 0 48px}.site-header{justify-content:space-between;gap:18px;padding:12px 0 28px}.brand,.site-header,.site-nav{display:flex;align-items:center}.brand,.site-nav{gap:10px}.brand{font-size:1.1rem;font-weight:750}.brand-mark{display:grid;width:34px;height:34px;place-items:center;border-radius:8px;color:#fff;background:var(--accent)}.site-nav a{border:1px solid var(--line);border-radius:999px;padding:8px 12px;color:var(--muted);background:rgba(255,255,255,.72)}.hero{display:grid;grid-template-columns:minmax(0,1fr);gap:24px;align-items:stretch;padding:26px 0 18px}.hero h1,.tool-heading h1{max-width:780px;margin:0;font-size:clamp(2.1rem,7vw,4.5rem);line-height:1;letter-spacing:0}.hero p,.tool-heading p{max-width:760px;margin:18px 0 0;color:var(--muted);font-size:1.08rem;line-height:1.7;overflow-wrap:anywhere}.tools-section{padding:28px 0 0}.tools-section h2{margin:0 0 16px;font-size:1rem;color:var(--muted);font-weight:700;text-transform:uppercase}.tool-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.tool-card{border:1px solid var(--line);border-radius:8px;background:var(--surface);box-shadow:var(--shadow);min-width:0;transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}.tool-card:hover{border-color:#b7c9dd;box-shadow:0 18px 42px rgba(28,43,59,.12);transform:translateY(-2px)}.tool-card-link{display:flex;height:100%;min-height:220px;flex-direction:column;justify-content:space-between;gap:18px;padding:18px;border-radius:8px}.tool-card-link:focus-visible{outline:3px solid rgba(15,118,110,.22);outline-offset:0}.tool-card h2{margin:0;font-size:1.35rem}.tool-card p{color:var(--muted);line-height:1.6}.tool-category{margin:0 0 12px;font-size:.75rem;font-weight:800;letter-spacing:0;text-transform:uppercase}.tool-card-button{width:100%;pointer-events:none}.button{display:inline-flex;min-height:42px;align-items:center;justify-content:center;border:1px solid var(--accent);border-radius:8px;color:#fff;background:var(--accent);padding:9px 14px;font-weight:700;cursor:pointer}.button:hover{background:var(--accent-strong)}.button:disabled{cursor:not-allowed;opacity:.55}.button-secondary{color:var(--accent);background:#f3fbfa}.button-secondary:hover{color:#fff}.tool-card-link:focus-visible .tool-card-button,.tool-card:hover .tool-card-button{color:#fff;background:var(--accent-strong)}.button-ghost{border-color:var(--line);color:var(--muted);background:#fff}.button-ghost:hover{color:var(--text);background:var(--surface-muted)}.tool-layout{display:grid;gap:24px}.tool-heading{padding-top:22px}.back-link{display:inline-flex;margin-bottom:18px;color:var(--accent);font-weight:700}.tool-panel{padding:18px}.ad-panel,.tool-panel{border:1px solid var(--line);border-radius:8px;background:var(--surface);box-shadow:var(--shadow);min-width:0}.ad-panel{overflow:hidden;padding:12px}.tool-form{display:grid;gap:14px;min-width:0}.tool-form label{display:grid;gap:8px;color:var(--muted);font-weight:700;min-width:0}.segmented-actions,.tool-actions{display:flex;flex-wrap:wrap;gap:10px}.error-text{margin:0;border-left:3px solid var(--danger);color:var(--danger);background:#fff4f2;padding:10px 12px}.helper-text{margin:0;color:var(--muted);line-height:1.6}.clock-skew-summary{display:flex;align-items:center;justify-content:space-between;gap:16px;border:1px solid var(--line);border-radius:8px;background:#fbfdff;padding:16px}.clock-skew-summary>div{display:grid;gap:6px;min-width:0}.clock-skew-summary span{color:var(--muted);font-size:.88rem;font-weight:700}.clock-skew-summary strong{font-size:1.35rem}.clock-skew-summary p{margin:0;color:var(--muted);line-height:1.55}.clock-skew-summary-ok{border-color:#b7ded4;background:#f1fbf8}.clock-skew-summary-warning{border-color:#f0c36d;background:#fff8e8}.clock-skew-summary-danger{border-color:#f0aaa3;background:#fff4f2}.result-list{display:grid;gap:10px}.result-list>div{display:grid;grid-template-columns:140px minmax(0,1fr);gap:12px;border:1px solid var(--line);border-radius:8px;background:#fbfdff;padding:12px;align-items:center}.result-list>div>span{color:var(--muted)}.result-label{display:inline-flex;align-items:center;gap:6px;min-width:0}.tooltip-wrapper{position:relative;display:inline-flex;flex:0 0 auto}.tooltip-trigger{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;border:1px solid var(--line);border-radius:999px;color:var(--muted);background:#fff;padding:0;font-size:.72rem;font-weight:800;line-height:1;cursor:help}.tooltip-content{position:absolute;left:50%;bottom:calc(100% + 8px);z-index:2;width:min(280px,calc(100vw - 48px));transform:translateX(-50%);border:1px solid #b7c9dd;border-radius:8px;color:var(--text);background:#fff;box-shadow:var(--shadow);padding:9px 10px;font-size:.82rem;font-weight:500;line-height:1.45;opacity:0;pointer-events:none;transition:opacity .12s ease,transform .12s ease}.tooltip-trigger:focus-visible+.tooltip-content,.tooltip-wrapper:hover .tooltip-content{opacity:1;transform:translateX(-50%) translateY(-2px)}.result-list>div strong{overflow-wrap:anywhere;font-weight:700}.command-preview{font-family:SFMono-Regular,Consolas,Liberation Mono,monospace;font-size:.94rem}.result-value-group{display:flex;align-items:center;gap:8px;justify-content:flex-start;min-width:0}.result-value-group strong{flex:0 1 auto;min-width:0}.result-copy-button{display:inline-flex;flex:0 0 auto;align-items:center;justify-content:center;width:28px;height:28px;padding:0;border:1px solid transparent;border-radius:6px;color:var(--muted);background:transparent;cursor:pointer}.result-copy-button svg{width:15px;height:15px}.result-copy-button:hover{color:var(--accent);background:#f3fbfa}.result-copy-button:focus-visible{outline:2px solid rgba(15,118,110,.22);outline-offset:1px}.result-copy-button[aria-label="已复制"],.result-copy-button[aria-label=Copied]{color:var(--accent);background:#f3fbfa}.redirect-page{display:grid;min-height:100vh;place-items:center;padding:24px;text-align:center}@media (max-width:860px){.hero,.tool-grid{grid-template-columns:1fr}}@media (max-width:560px){.page-shell{width:calc(100% - 24px);max-width:calc(100vw - 24px);padding-bottom:32px}.site-header{align-items:flex-start;flex-direction:column}.site-nav{display:grid;width:100%;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.site-nav a{min-width:0;text-align:center}.hero h1,.tool-heading h1{font-size:2.35rem}.tool-card,.tool-panel{padding:14px}.result-list>div{grid-template-columns:1fr}.result-value-group{flex-wrap:wrap}.clock-skew-summary{align-items:stretch;flex-direction:column}}