:root{--brand:#2D3C43;--brand2:#233038;--ink:#1f2d33;--muted:#62757d;--line:#d7e2e6;--bg:#f5f7f8;--green:#15924f;--light:#eef3f4}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC","PingFang TC",sans-serif;background:var(--bg);color:var(--ink);line-height:1.7}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.wrap{width:min(1100px,calc(100% - 32px));margin:auto}header{background:#fff;border-bottom:1px solid var(--line)}nav{height:128px;display:flex;justify-content:space-between;align-items:center;gap:18px}nav img{height:118px;width:auto}.navlinks{display:flex;gap:16px;align-items:center;font-size:12px;font-weight:900}.btn{display:inline-flex;padding:11px 15px;border-radius:11px;background:var(--brand);color:#fff;font-size:12px;font-weight:900}.green{background:var(--green)}.crumbs{font-size:11px;color:var(--muted);padding:18px 0 0}.hero{background:#fff;padding:26px 0 42px}.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:28px;align-items:center}.eyebrow{font-size:10px;font-weight:900;letter-spacing:.12em;text-transform:uppercase;color:#75868d}h1{font-size:clamp(34px,5vw,52px);line-height:1.12;letter-spacing:-.04em;margin:7px 0 13px}h2{font-size:28px;letter-spacing:-.025em;margin:0 0 12px}.lead{font-size:16px;color:#506169;margin:0}.hero img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:22px}.chips{display:flex;gap:7px;flex-wrap:wrap;margin-top:16px}.chip{padding:6px 9px;background:var(--light);border-radius:999px;font-size:10px;font-weight:900;color:#51636a}.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.actions .outline{background:#fff;color:var(--brand);border:1px solid var(--line)}section{padding:45px 0}.white{background:#fff}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}.card h3{font-size:17px;margin:0 0 7px}.card p{font-size:12px;color:var(--muted);margin:0}.price-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.price-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:15px;display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center}.price-card h3{font-size:14px;margin:0 0 5px}.meta{font-size:10px;color:var(--muted)}.price{font-size:20px;font-weight:950;white-space:nowrap;text-align:right}.tag{display:inline-block;font-size:9px;font-weight:900;background:var(--light);padding:4px 7px;border-radius:999px;margin-right:4px}.tag.good{background:#eaf7ef;color:#177846}.note{font-size:11px;color:var(--muted);line-height:1.75;margin-top:14px}.related{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.related a{background:#fff;border:1px solid var(--line);border-radius:15px;padding:14px;font-size:12px;font-weight:900}.faq details{background:#fff;border:1px solid var(--line);border-radius:15px;padding:15px;margin-bottom:9px}.faq summary{font-weight:900;cursor:pointer}.faq p{font-size:12px;color:var(--muted)}.model-list{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.model-list a{background:#fff;border:1px solid var(--line);border-radius:13px;padding:12px;font-size:12px;font-weight:850}.cta{background:var(--brand);color:#fff;border-radius:20px;padding:23px}.cta p{color:#d6e0e4;font-size:12px}.store{display:grid;grid-template-columns:1fr 1fr;gap:14px}.store img{border-radius:18px;height:100%;object-fit:cover}.map{border-radius:18px;overflow:hidden;border:1px solid var(--line);min-height:260px}.map iframe{border:0;width:100%;height:260px}footer{background:var(--brand2);color:#eef4f6;padding:22px 0 26px;font-size:14px;line-height:1.9}.footergrid{display:grid;grid-template-columns:270px 1fr;gap:30px;align-items:center}.footergrid img{width:250px;height:auto}.footerlinks{display:flex;gap:14px;flex-wrap:wrap;margin-top:8px;font-size:13px}.footerlinks a{text-decoration:underline;text-underline-offset:3px}.mobilebar{display:none}@media(max-width:800px){.navlinks a:not(.btn){display:none}.hero-grid,.grid2,.store{grid-template-columns:1fr}.price-grid{grid-template-columns:1fr}.related,.model-list{grid-template-columns:1fr 1fr}.footergrid{grid-template-columns:1fr}}@media(max-width:560px){nav{height:112px}nav img{height:102px}.related,.model-list{grid-template-columns:1fr}.mobilebar{display:grid;position:fixed;left:0;right:0;bottom:0;z-index:50;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid var(--line);padding:5px}.mobilebar a{text-align:center;font-size:9px;font-weight:900;padding:7px 2px}body{padding-bottom:58px}}

footer strong{font-size:17px;color:#fff;letter-spacing:.01em}footer .footerlinks a{color:#fff;opacity:.92}
@media(max-width:800px){.footergrid{grid-template-columns:1fr;gap:14px}.footergrid img{width:230px}footer{padding:22px 0 76px;font-size:13px}}


/* V5.1 model SEO / AI content enhancement — preserves V5.0.1 visual language */
.answer-intro{max-width:850px;font-size:14px;color:var(--muted);margin:0 0 16px}.answer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.answer-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px}.answer-card h3{font-size:14px;margin:0 0 7px}.answer-card .answer-price{font-size:20px;font-weight:950;color:var(--brand);margin-bottom:5px}.answer-card p{font-size:11px;color:var(--muted);margin:0}.topic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.topic-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:17px}.topic-card h3{font-size:16px;margin:0 0 7px}.topic-card p{font-size:12px;color:var(--muted);margin:0 0 9px}.topic-card a{font-size:11px;font-weight:900;color:var(--brand);text-decoration:underline;text-underline-offset:3px}.fact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.fact{background:#fff;border:1px solid var(--line);border-radius:15px;padding:15px}.fact b{display:block;font-size:13px;margin-bottom:5px}.fact span{font-size:11px;color:var(--muted)}.ai-answer{background:var(--brand);color:#fff;border-radius:20px;padding:22px;margin-top:14px}.ai-answer h3{font-size:18px;margin:0 0 7px}.ai-answer p{font-size:13px;line-height:1.85;color:#e1e9ec;margin:0}.service-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.service-links a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 11px;font-size:11px;font-weight:900}.local-answer{display:grid;grid-template-columns:1.15fr .85fr;gap:12px;align-items:stretch}.local-answer .card{height:100%}.local-answer h3{font-size:18px;margin:0 0 8px}.local-answer p{font-size:12px;color:var(--muted);margin:0}.local-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:13px}.section-kicker{font-size:10px;font-weight:900;letter-spacing:.12em;text-transform:uppercase;color:#75868d;margin-bottom:5px}.price-highlight{font-weight:900;color:var(--ink)}
@media(max-width:900px){.answer-grid,.fact-grid{grid-template-columns:1fr 1fr}.local-answer{grid-template-columns:1fr}}
@media(max-width:600px){.answer-grid,.topic-grid,.fact-grid{grid-template-columns:1fr}.answer-card .answer-price{font-size:19px}.ai-answer{padding:18px}}


/* V5.2 service hub + internal link network */
.v52-direct .direct-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.v52-direct .direct-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px}.v52-direct .direct-card b{display:block;font-size:15px;margin-bottom:5px}.v52-direct .direct-card span{display:block;font-size:12px;color:var(--muted);line-height:1.75}.v52-direct .direct-card .direct-value{font-size:21px;font-weight:950;color:var(--brand);margin-bottom:5px}.v52-intents .intent-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.v52-intents .intent{background:#fff;border:1px solid var(--line);border-radius:16px;padding:17px}.v52-intents .intent h3{font-size:16px;margin:0 0 7px}.v52-intents .intent p{font-size:13px;color:var(--muted);margin:0;line-height:1.8}.v52-price-examples .example-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.v52-price-examples .example{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px}.v52-price-examples .example b{font-size:14px;display:block;line-height:1.5}.v52-price-examples .example .example-price{font-size:20px;font-weight:950;color:var(--brand);margin:5px 0}.v52-price-examples .example p{font-size:11px;color:var(--muted);margin:0 0 9px}.v52-price-examples .example a,.v52-cluster a{font-size:11px;font-weight:900;text-decoration:underline;text-underline-offset:3px}.v52-cluster .cluster-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.v52-cluster .cluster-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:17px}.v52-cluster .cluster-card h3{font-size:16px;margin:0 0 8px}.v52-cluster .cluster-card p{font-size:12px;color:var(--muted);margin:0 0 10px}.v52-linknet .linknet-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.v52-linknet .linkbox{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}.v52-linknet .linkbox h3{font-size:17px;margin:0 0 7px}.v52-linknet .linkbox p{font-size:12px;color:var(--muted);margin:0 0 10px}.v52-linknet .link-list{display:flex;flex-wrap:wrap;gap:7px}.v52-linknet .link-list a{background:var(--light);border-radius:999px;padding:7px 10px;font-size:11px;font-weight:900}.v52-service-faq details p{font-size:13px}.v52-note{font-size:12px;color:var(--muted);line-height:1.8;margin-top:12px}.v52-model-head{display:flex;justify-content:space-between;gap:12px;align-items:end}.v52-model-head p{font-size:12px;color:var(--muted);margin:0 0 10px;max-width:560px}.v52-ai-summary{background:var(--brand);color:#fff;border-radius:20px;padding:21px;margin-top:14px}.v52-ai-summary h3{font-size:18px;margin:0 0 7px}.v52-ai-summary p{font-size:13px;color:#e1e9ec;margin:0;line-height:1.85}
@media(max-width:900px){.v52-direct .direct-grid,.v52-price-examples .example-grid{grid-template-columns:1fr 1fr}.v52-cluster .cluster-grid{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.v52-direct .direct-grid,.v52-intents .intent-grid,.v52-price-examples .example-grid,.v52-cluster .cluster-grid,.v52-linknet .linknet-grid{grid-template-columns:1fr}.v52-model-head{display:block}.v52-intents .intent p,.v52-service-faq details p{font-size:13px}}


/* V5.3 Local SEO / business entity enhancement */
.v53-entity-summary{background:var(--brand);color:#fff;border-radius:20px;padding:22px;margin-top:14px}.v53-entity-summary h3{font-size:18px;margin:0 0 7px}.v53-entity-summary p{font-size:13px;color:#e1e9ec;line-height:1.85;margin:0}.v53-nap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.v53-nap-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px}.v53-nap-card b{display:block;font-size:13px;margin-bottom:5px}.v53-nap-card span,.v53-nap-card a{font-size:12px;color:var(--muted);line-height:1.75}.v53-nap-card a{text-decoration:underline;text-underline-offset:3px;font-weight:850}.v53-service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.v53-service-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:17px}.v53-service-card h3{font-size:16px;margin:0 0 6px}.v53-service-card p{font-size:12px;color:var(--muted);margin:0 0 9px}.v53-service-card a{font-size:11px;font-weight:900;text-decoration:underline;text-underline-offset:3px}.v53-local-box{display:grid;grid-template-columns:1.1fr .9fr;gap:12px}.v53-local-box .card{height:100%}.v53-local-box h3{font-size:18px;margin:0 0 8px}.v53-local-box p{font-size:12px;color:var(--muted);line-height:1.8;margin:0}.v53-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:13px}.v53-faq details p{font-size:13px}.v53-identity-note{font-size:11px;color:var(--muted);line-height:1.75;margin-top:12px}
@media(max-width:900px){.v53-nap-grid{grid-template-columns:1fr 1fr}.v53-service-grid{grid-template-columns:1fr 1fr}.v53-local-box{grid-template-columns:1fr}}
@media(max-width:600px){.v53-nap-grid,.v53-service-grid{grid-template-columns:1fr}}