/* Tongling: industrial charcoal, copper accents and pale reading sheets. */
body.c3-tongling{--tl-bg:#08191e;--tl-panel:#122a30;--tl-soft:#1a3840;--tl-line:#38545b;--tl-mint:#efa361;--tl-cream:#f2f5f2;--tl-ink:#19373e;--tl-muted:#a3bdc1;margin:0;background:var(--tl-bg);color:var(--tl-cream);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif}.c3-tongling main{overflow:clip;background-image:radial-gradient(ellipse at 80% 5%,#efa3610a,transparent 45%)}.c3-tongling main *{box-sizing:border-box}.c3-tongling main figure{margin:0}.c3-tongling main img{display:block;max-width:100%;height:auto}.c3-tongling main a{color:inherit;text-decoration:none}.c3-tongling main a:hover{color:var(--tl-mint)}.c3-tongling main h1,.c3-tongling main h2,.c3-tongling main h3,.c3-tongling main p{margin-top:0;overflow-wrap:anywhere}.c3-tongling main h1{font-size:clamp(34px,4.4vw,64px);line-height:1.2;letter-spacing:-.05em;font-weight:900;margin-bottom:24px}.c3-tongling main h2{font-size:clamp(22px,2.3vw,31px);line-height:1.5;letter-spacing:-.035em;margin-bottom:16px}.c3-tongling main p{line-height:1.95}.c3-tongling main button{font:inherit;cursor:pointer}.c3-tongling main [hidden]{display:none!important}.c3-tongling :focus-visible{outline:3px solid var(--tl-mint);outline-offset:5px}.tl6-wrap{width:min(1180px,calc(100% - 64px));margin-inline:auto}.tl6-crumb{display:flex;flex-wrap:wrap;gap:10px;padding:25px 0;color:var(--tl-muted);font-size:12px;line-height:1.8}.tl6-eyebrow{font-size:10px;line-height:1.8!important;letter-spacing:.16em;font-weight:800;color:var(--tl-mint);margin-bottom:18px!important}.tl6-button,.tl6-reader button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:44px;padding:11px 21px;border-radius:999px;border:1px solid var(--tl-mint);background:var(--tl-mint);color:var(--tl-bg)!important;font-size:12px!important;font-weight:800;line-height:1.7}.tl6-button:hover,.tl6-reader button:hover{background:#f6be8e;border-color:#f6be8e;color:var(--tl-bg)!important}.tl6-text-link{display:inline-block;color:var(--tl-mint)!important;font-size:12px;font-weight:800;line-height:1.8;padding:8px 0}.tl6-text-link:hover{text-decoration:underline!important;text-underline-offset:5px}.tl6-pill{display:inline-flex;border:1px solid currentColor;border-radius:99px;padding:6px 12px;font-size:11px;line-height:1.5;letter-spacing:.04em}.tl6-meta{display:flex;flex-wrap:wrap;gap:8px 23px;font-size:12px;color:var(--tl-muted);line-height:1.8;margin:18px 0}.tl6-lead,.tl6-summary{font-size:14px;color:var(--tl-muted)}.tl6-compact .tl6-summary{display:none}.tl6-section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:30px}.tl6-section-head h2{margin-bottom:0!important}.tl6-section-head .tl6-button{flex-shrink:0;background:transparent;color:var(--tl-mint)!important;border-color:var(--tl-line)}.tl6-section-head .tl6-button:hover{background:var(--tl-soft)}.tl6-pager{display:flex;flex-wrap:wrap;gap:8px;margin-top:34px;padding:23px 0;border-top:1px solid var(--tl-line)}.tl6-pager a{min-width:42px;min-height:42px;padding:8px 14px;display:grid;place-items:center;border:1px solid var(--tl-line);border-radius:99px;font-size:12px}.tl6-pager a.active,.tl6-pager a.is-active,.tl6-pager a:hover{background:var(--tl-mint);border-color:var(--tl-mint);color:var(--tl-bg)!important}.tl6-reader{display:flex;align-items:center;gap:20px;padding-bottom:25px;margin-bottom:28px;border-bottom:1px solid #bac8bf;font-size:12px;color:#637772}.tl6-reader button{min-height:40px;border-color:#a8c7bb;background:#dfede4;color:var(--tl-ink)!important}.tl6-paper-label{display:flex;align-items:center;justify-content:space-between;gap:25px;font-size:11px;letter-spacing:.13em;padding-bottom:18px;margin-bottom:25px;border-bottom:1px solid #bac8bf;color:#547168}.tl6-paper-label i{display:block;width:8px;height:8px;border-radius:50%;background:#35a698;box-shadow:0 0 0 5px #35a69812}.tl6-prose{min-width:0;font-size:17px;line-height:2.05;overflow-wrap:anywhere;color:var(--tl-ink)}.tl6-prose>*:first-child{margin-top:0}.tl6-prose h1,.tl6-prose h2{font-size:27px!important;line-height:1.55!important;letter-spacing:0!important;margin:38px 0 20px!important;color:#193d45}.tl6-prose h3{font-size:21px;line-height:1.6;margin:30px 0 14px;color:#193d45}.tl6-prose p{font-size:inherit;line-height:inherit!important;margin-bottom:22px;color:inherit}.tl6-prose a{color:#87562b!important;text-decoration:underline!important;text-underline-offset:4px}.tl6-prose ul,.tl6-prose ol{padding-left:1.5em}.tl6-prose table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse;font-size:14px}.tl6-prose th,.tl6-prose td{border:1px solid #bac8bf;padding:10px;min-width:80px}.tl6-prose img{height:auto!important;max-width:100%!important;border-radius:12px;margin:25px auto}.tl6-prose blockquote{margin:25px 0;padding:20px;border-left:4px solid #52b5a6;border-radius:0 15px 15px 0;background:#e5ecea}.tl6-big-type .tl6-prose{font-size:20px}.c3-tongling main details summary{cursor:pointer;font-size:12px;line-height:1.8;font-weight:800;padding:11px 0;color:var(--tl-mint)}.c3-tongling main details p{font-size:14px;line-height:1.95;color:var(--tl-muted);margin:5px 0 15px}.tl6-related{padding-top:60px;padding-bottom:25px}.tl6-related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin:26px 0}.tl6-related-grid article{background:var(--tl-panel);border:1px solid var(--tl-line);border-radius:20px;padding:25px;position:relative;min-width:0}.tl6-related-grid time{font-size:11px;color:var(--tl-muted)}.tl6-related-grid h3{font-size:18px;line-height:1.75;margin:16px 0}.tl6-related-grid article>span{color:var(--tl-mint);font-size:23px}.tl6-promo{margin-top:42px;margin-bottom:42px;overflow:hidden;border-radius:20px}.tl6-promo img{width:100%}.tl6-columns{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.tl6-columns a{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:18px 22px;border:1px solid var(--tl-line);border-radius:99px;font-size:13px;line-height:1.6}.tl6-columns a[aria-current]{background:var(--tl-mint);border-color:var(--tl-mint);color:var(--tl-bg)}.tl6-skip{position:fixed;z-index:10000;top:8px;left:8px;transform:translateY(-180%);padding:14px;background:#fff;color:#19373e}.tl6-skip:focus{transform:translateY(0)}.tl6-placeholder{display:grid;place-items:center;min-height:240px;padding:30px;border:1px dashed var(--tl-mint);border-radius:24px;color:var(--tl-muted);font-size:13px;text-align:center}.c3-tongling main a,.c3-tongling main button{transition:background-color .2s,color .2s,border-color .2s}.c3-tongling main .tl6-check-card,.c3-tongling main .tl6-change-card{transition:transform .2s,border-color .2s,box-shadow .2s}
@media(max-width:900px){.tl6-wrap{width:calc(100% - 40px)}.tl6-related-grid{gap:16px}.tl6-related-grid article{padding:20px}.tl6-columns{grid-template-columns:repeat(2,minmax(0,1fr))}.tl6-prose{font-size:16px}.tl6-section-head{align-items:start}.tl6-related-grid h3{font-size:17px}}
@media(max-width:600px){.tl6-wrap{width:calc(100% - 32px)}.tl6-crumb{padding:18px 0;font-size:11px;gap:7px}.c3-tongling main h1{font-size:33px;letter-spacing:-.04em}.c3-tongling main h2{font-size:23px}.tl6-section-head{flex-direction:column;gap:18px}.tl6-related-grid{grid-template-columns:1fr}.tl6-related{padding-top:40px;padding-bottom:15px}.tl6-reader{align-items:start;gap:14px}.tl6-reader span{max-width:110px}.tl6-meta{font-size:11px;gap:7px 15px}.tl6-prose h2{font-size:23px!important}.tl6-columns{gap:10px}.tl6-columns a{padding:16px 13px;font-size:12px}.tl6-promo{margin-block:28px;border-radius:13px}.tl6-placeholder{min-height:200px}.tl6-prose table{font-size:13px}}
@media(prefers-reduced-motion:reduce){.c3-tongling main *{transition:none!important;animation:none!important;scroll-behavior:auto!important}}

/* City-specific utility refinements: square copper controls and slim technical dividers. */
.tl6-button,.tl6-reader button{border-radius:2px}.tl6-related-grid article{border-radius:3px}.tl6-columns a{border-radius:2px}.tl6-pager a{border-radius:2px}.tl6-prose img{border-radius:3px}.tl6-placeholder{border-radius:2px}.tl6-promo{border-radius:3px}.tl6-section-head .tl6-button{border-color:#806042}.tl6-prose blockquote{border-left-color:#bd824b;border-radius:0}.tl6-reader button{background:#e4ded0;border-color:#c6ae8f}.tl6-text-link{color:var(--tl-mint)!important}

.tl6-document-code{display:flex;flex-wrap:wrap;justify-content:space-between;gap:15px;font-size:10px;letter-spacing:.07em;color:#7b674f;border-bottom:1px solid #bcc9c5;padding-bottom:18px;margin-bottom:25px}.tl6-work-note{padding:15px 20px;background:#e6ece8;border:1px solid #bdc9c1;margin-top:35px}.tl6-work-note summary{color:#52685f!important}.tl6-work-note p{color:#5e736b!important}