/* bjsj.net · 北京时间网 全站样式 */
:root{--bjsj-bg:#f2f7f4;--bjsj-card:#ffffff;--bjsj-line:#dfe9e2;--bjsj-ink:#17251e;--bjsj-sub:#5b6d63;--bjsj-mute:#8ba093;--bjsj-green:#0e9f6e;--bjsj-green-d:#0b7c56;--bjsj-teal:#0d9488;--bjsj-deep:#0a3f2e;--bjsj-deep2:#0d5c3f;--bjsj-warn:#d97706;--bjsj-red:#dc2626;--bjsj-r:14px}
*{margin:0;padding:0;box-sizing:border-box}
html,body{overflow-x:hidden}
html:fullscreen{overflow:hidden}
body{font-family:-apple-system,'PingFang SC','Microsoft YaHei','Segoe UI',sans-serif;background:var(--bjsj-bg);color:var(--bjsj-ink);line-height:1.7}
a{color:var(--bjsj-green-d);text-decoration:none}
img{max-width:100%}
.bjsj-wrap{max-width:1080px;margin:0 auto;padding:0 18px}
/* 顶栏 */
.bjsj-top{background:#fff;border-bottom:1px solid var(--bjsj-line);position:sticky;top:0;z-index:50}
.bjsj-top .bjsj-wrap{display:flex;align-items:center;justify-content:space-between;height:54px}
.bjsj-brand{display:flex;align-items:center;gap:9px;font-size:17px;font-weight:700;color:var(--bjsj-deep)}
.bjsj-brand i{width:24px;height:24px;border-radius:7px;background:linear-gradient(135deg,var(--bjsj-green),var(--bjsj-teal));position:relative;display:inline-block;flex:none}
.bjsj-brand i::after{content:'';position:absolute;inset:6px;border-radius:50%;border:2.5px solid #fff}
.bjsj-top nav{display:flex;gap:16px}
.bjsj-top nav a{font-size:14px;color:var(--bjsj-sub)}
.bjsj-top nav a:hover{color:var(--bjsj-green)}
@media(max-width:600px){.bjsj-top nav{display:none}}
/* 头部大钟 */
.bjsj-hero{background:linear-gradient(142deg,var(--bjsj-deep) 0%,var(--bjsj-deep2) 52%,var(--bjsj-green-d) 100%);border-radius:0 0 24px 24px;color:#fff;padding:44px 16px 50px;text-align:center;position:relative}
.bjsj-hero h1{font-size:26px;font-weight:700;letter-spacing:5px;margin-bottom:10px}
.bjsj-hero .bjsj-sub{font-size:13px;color:rgba(255,255,255,.75);display:flex;align-items:center;justify-content:center;gap:8px;margin-bottom:30px}
.bjsj-dot{width:8px;height:8px;border-radius:50%;background:#34d399;display:inline-block;animation:bjsjPulse 2s ease-in-out infinite}
@keyframes bjsjPulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.55;transform:scale(1.25)}}
.bjsj-clock{font-size:78px;font-weight:200;letter-spacing:5px;font-family:'SF Mono',Consolas,'Courier New',monospace;line-height:1.15;text-shadow:0 3px 14px rgba(0,0,0,.25)}
.bjsj-clock small{font-size:30px;color:rgba(255,255,255,.62);font-weight:300;letter-spacing:1px}
@media(max-width:640px){.bjsj-clock{font-size:44px;letter-spacing:2px}.bjsj-clock small{font-size:19px}.bjsj-hero h1{font-size:20px;letter-spacing:3px}}
.bjsj-daterow{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:26px}
.bjsj-daterow span{font-size:14px;padding:7px 16px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);color:#fff}
.bjsj-acts{position:absolute;top:16px;right:16px;display:flex;gap:8px}
.bjsj-acts button{width:38px;height:38px;border-radius:10px;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.1);color:#fff;font-size:16px;cursor:pointer}
.bjsj-acts button:hover{background:rgba(255,255,255,.22)}
@media(max-width:768px){.bjsj-acts{display:none}}
/* 信息条 */
.bjsj-chips{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:-26px 0 22px;position:relative;z-index:2}
.bjsj-chip{background:#fff;border:1px solid var(--bjsj-line);border-radius:var(--bjsj-r);padding:14px 18px;box-shadow:0 6px 18px rgba(10,63,46,.08)}
.bjsj-chip em{font-style:normal;font-size:12px;color:var(--bjsj-mute);display:block;margin-bottom:3px;letter-spacing:1px}
.bjsj-chip b{font-size:17px;color:var(--bjsj-ink);font-weight:600}
.bjsj-chip b.g{color:var(--bjsj-green-d)}
/* 通用卡片 */
.bjsj-card{background:var(--bjsj-card);border:1px solid var(--bjsj-line);border-radius:var(--bjsj-r);padding:30px;margin-bottom:22px}
.bjsj-card>h2{font-size:18px;font-weight:700;color:var(--bjsj-deep);margin-bottom:18px;padding-left:12px;border-left:4px solid var(--bjsj-green);line-height:1.4}
.bjsj-card p{font-size:14.5px;color:var(--bjsj-sub);margin-bottom:12px;text-align:justify}
.bjsj-card p:last-child{margin-bottom:0}
/* 对比双卡 */
.bjsj-duo{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:22px}
@media(max-width:640px){.bjsj-duo{grid-template-columns:1fr}}
.bjsj-cell{background:#fff;border:1px solid var(--bjsj-line);border-radius:var(--bjsj-r);padding:20px;text-align:center}
.bjsj-cell em{font-style:normal;font-size:12px;color:var(--bjsj-mute);letter-spacing:1.5px;display:block;margin-bottom:8px}
.bjsj-cell .t{font-size:28px;font-family:'SF Mono',Consolas,monospace;font-weight:500}
.bjsj-cell.ok .t{color:var(--bjsj-green-d)}
.bjsj-cell .s{font-size:12.5px;color:var(--bjsj-sub);margin-top:6px}
.bjsj-cell .s.warn{color:var(--bjsj-warn)}
/* 城市网格 */
.bjsj-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(158px,1fr));gap:12px}
.bjsj-city{background:#fff;border:1px solid var(--bjsj-line);border-radius:12px;padding:14px 10px;text-align:center}
.bjsj-city .c{font-size:13.5px;font-weight:600;margin-bottom:6px}
.bjsj-city .t{font-size:20px;font-family:'SF Mono',Consolas,monospace;color:var(--bjsj-green-d)}
.bjsj-city .d{font-size:11.5px;color:var(--bjsj-mute);margin-top:4px}
.bjsj-city .z{display:inline-block;font-size:10.5px;color:var(--bjsj-mute);border:1px solid var(--bjsj-line);border-radius:4px;padding:1px 7px;margin-top:6px;background:var(--bjsj-bg)}
a.bjsj-city:hover{border-color:var(--bjsj-green)}
/* 对照表 */
.bjsj-table{width:100%;border-collapse:collapse;font-size:14px}
.bjsj-table th{background:var(--bjsj-bg);color:var(--bjsj-sub);font-weight:600;text-align:left;padding:10px 12px;border-bottom:1px solid var(--bjsj-line);white-space:nowrap}
.bjsj-table td{padding:10px 12px;border-bottom:1px solid #eef4f0;white-space:nowrap}
.bjsj-table tr:last-child td{border-bottom:none}
.bjsj-table .num{font-family:'SF Mono',Consolas,monospace}
.bjsj-tbl-scroll{overflow-x:auto}
/* 换算表 */
.bjsj-conv table{width:100%;border-collapse:collapse;font-size:14px}
.bjsj-conv th{background:var(--bjsj-bg);padding:9px 12px;border-bottom:1px solid var(--bjsj-line);color:var(--bjsj-sub);text-align:left;font-weight:600}
.bjsj-conv td{padding:9px 12px;border-bottom:1px solid #eef4f0;font-family:'SF Mono',Consolas,monospace}
.bjsj-conv td:first-child{font-family:inherit;color:var(--bjsj-sub)}
.bjsj-conv tr:last-child td{border-bottom:none}
/* 时间戳工具 */
.bjsj-ts{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:640px){.bjsj-ts{grid-template-columns:1fr}}
.bjsj-ts .box{background:var(--bjsj-bg);border:1px solid var(--bjsj-line);border-radius:12px;padding:16px}
.bjsj-ts label{display:block;font-size:13px;color:var(--bjsj-sub);margin-bottom:8px}
.bjsj-ts input{width:100%;padding:10px 12px;border:1px solid var(--bjsj-line);border-radius:9px;font-size:14px;font-family:'SF Mono',Consolas,monospace;margin-bottom:10px;background:#fff}
.bjsj-ts input:focus{outline:none;border-color:var(--bjsj-green)}
.bjsj-ts .row{display:flex;gap:8px}
.bjsj-ts button{flex:1;padding:9px 10px;border:1px solid var(--bjsj-green-d);background:var(--bjsj-green-d);color:#fff;border-radius:9px;font-size:13px;cursor:pointer}
.bjsj-ts button.ghost{background:#fff;color:var(--bjsj-green-d)}
.bjsj-ts .out{margin-top:10px;font-size:13px;color:var(--bjsj-green-d);font-family:'SF Mono',Consolas,monospace;word-break:break-all;min-height:20px}
/* 进度 */
.bjsj-prog{margin-top:6px}
.bjsj-prog .bar{height:10px;border-radius:999px;background:#e6efe9;overflow:hidden}
.bjsj-prog .bar i{display:block;height:100%;background:linear-gradient(90deg,var(--bjsj-green),var(--bjsj-teal));border-radius:999px;transition:width .4s}
.bjsj-prog p{font-size:13px;color:var(--bjsj-sub);margin-top:8px;text-align:center}
/* 特色 */
.bjsj-feats{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin-bottom:22px}
.bjsj-feat{background:#fff;border:1px solid var(--bjsj-line);border-radius:var(--bjsj-r);padding:22px}
.bjsj-feat .ic{width:40px;height:40px;border-radius:11px;background:#e7f5ee;color:var(--bjsj-green-d);display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:12px}
.bjsj-feat h3{font-size:15px;margin-bottom:7px}
.bjsj-feat p{font-size:13px;color:var(--bjsj-sub)}
/* FAQ */
.bjsj-faq dt{font-weight:600;font-size:14.5px;color:var(--bjsj-ink);padding:12px 0 4px}
.bjsj-faq dd{font-size:13.5px;color:var(--bjsj-sub);border-bottom:1px dashed #e6eee9;padding:0 0 12px}
.bjsj-faq dd:last-child{border-bottom:none}
/* 链接区 */
.bjsj-links{display:flex;flex-wrap:wrap;gap:9px}
.bjsj-links a{display:inline-block;padding:7px 15px;background:#fff;border:1px solid var(--bjsj-line);border-radius:999px;font-size:13px;color:var(--bjsj-sub)}
.bjsj-links a:hover{border-color:var(--bjsj-green);color:var(--bjsj-green-d);background:#f4faf7}
/* 页脚 */
.bjsj-foot{background:var(--bjsj-deep);color:rgba(255,255,255,.72);margin-top:34px;padding:30px 0 34px;text-align:center;font-size:13px}
.bjsj-foot a{color:rgba(255,255,255,.85);margin:0 12px}
.bjsj-foot a:hover{color:#6ee7b7}
.bjsj-foot .fl{margin-top:12px;display:flex;justify-content:center;flex-wrap:wrap;gap:6px 0}
.bjsj-foot p{margin-bottom:10px}
/* 动画辅助 */
.bjsj-same{color:var(--bjsj-ink)}
.bjsj-diff{color:var(--bjsj-green-d);font-weight:600}