/* Bluesun article detail — single authoritative stylesheet */
:root{
  --article-container:1280px;
  --article-copy:820px;
  --article-radius:14px;
  --article-shadow:0 18px 45px rgba(24,33,36,.08);
}

.news-detail-page,.news-detail-page *,.news-detail-page *::before,.news-detail-page *::after{box-sizing:border-box}
body.news-detail-page{margin:0;overflow-x:hidden;padding-bottom:0;background:var(--bs-white);color:var(--bs-charcoal);font-family:"Bluesun Sans",Arial,sans-serif;-webkit-font-smoothing:antialiased}
.news-detail-page img,.news-detail-page video{display:block;max-width:100%}
.news-detail-page a{color:inherit;text-decoration:none}
.news-detail-page button,.news-detail-page input,.news-detail-page textarea{font:inherit}
.news-detail-page button{cursor:pointer}
.news-detail-page .container{width:min(calc(100% - 48px),var(--article-container));margin-inline:auto}
.floating-header-space{height:104px;pointer-events:none}

/* Breadcrumb and hero share one calm visual field */
.news-hero{background:linear-gradient(135deg,#f8fbfa 0%,#f1f7f5 55%,#eef6f7 100%)}

.news-hero{padding:66px 0 56px;border-bottom:1px solid var(--bs-border)}
.news-hero__grid{display:grid;grid-template-columns:minmax(0,1.04fr) minmax(430px,.96fr);gap:64px;align-items:center}
.news-hero__content{min-width:0}
.news-tags{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 18px}
.news-tag{display:inline-flex;align-items:center;min-height:28px;padding:0 12px;border:1px solid var(--bs-border);border-radius:999px;background:var(--bs-energy-gradient-soft);color:var(--bs-green);font-size:12px;font-weight:650;line-height:1.2}
.news-tag--primary{background:var(--bs-energy-gradient-soft);color:var(--bs-green)}
.news-title{max-width:720px;margin:0;color:var(--bs-charcoal);font-size:clamp(38px,4vw,58px);font-weight:700;line-height:1.08;letter-spacing:-.04em}
.news-title::after{content:"";display:block;width:72px;height:3px;margin-top:22px;border-radius:999px;background:var(--bs-energy-gradient)}
.news-summary{max-width:680px;margin:20px 0 0;color:var(--bs-text-secondary);font-size:16px;line-height:1.72}
.news-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px 22px;margin-top:24px;color:var(--bs-text-secondary);font-size:13px}
.news-meta__item{display:flex;align-items:center;gap:7px}
.news-meta__item svg{width:16px;height:16px;flex:0 0 16px;fill:none;stroke:var(--bs-green);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.news-hero__media{position:relative;margin:0;overflow:hidden;aspect-ratio:16/10;border:1px solid rgba(45,184,120,.18);border-radius:18px;background:#eaf1ef;box-shadow:0 24px 55px rgba(24,33,36,.13)}
.news-hero__media::after{content:"";position:absolute;inset:0;border-radius:inherit;box-shadow:inset 0 0 0 1px rgba(255,255,255,.4);pointer-events:none}
.news-hero__media img{width:100%;height:100%;object-fit:cover}

/* Main article rhythm */
.news-main{padding:52px 0 72px}
.news-main__grid{display:grid;grid-template-columns:minmax(0,var(--article-copy)) minmax(260px,310px);justify-content:space-between;gap:72px}
.article-content{min-width:0;color:var(--bs-text-secondary);font-size:16px;line-height:1.78}
.article-content p{margin:0 0 18px;color:var(--bs-text-secondary);font-size:16px;line-height:1.78}
.article-content a:not(.btn):not(.news-card__link):not(.article-share__links a){color:var(--bs-green);text-decoration-color:var(--bs-green);text-underline-offset:3px}
.article-content a:hover{color:var(--bs-teal)}
.article-content strong{color:var(--bs-charcoal);font-weight:650}
.article-content ul,.article-content ol{margin:0 0 22px;padding-left:24px}
.article-content li{margin:7px 0;color:var(--bs-text-secondary)}
.article-section{margin:0 0 44px;scroll-margin-top:104px}
.article-section h2,.article-content>h2{position:relative;margin:0 0 15px;padding-left:17px;color:var(--bs-charcoal);font-size:28px;font-weight:700;line-height:1.27;letter-spacing:-.025em}
.article-section h2::before,.article-content>h2::before{content:"";position:absolute;left:0;top:.18em;width:4px;height:1.02em;border-radius:4px;background:var(--bs-energy-gradient)}
.article-section h3,.article-content>h3{margin:30px 0 11px;color:var(--bs-charcoal);font-size:21px;line-height:1.35}
.article-section h4,.article-content>h4{margin:24px 0 9px;color:var(--bs-charcoal);font-size:17px;font-weight:700;line-height:1.42}
.content-block--h2,.content-block--h3,.content-block--h4{margin-bottom:14px}.content-block--h3>h3,.content-block--h4>h4{margin-top:0}
.article-intro{margin-bottom:28px}
.rich-text-block>p:last-child,.answer-block p:last-child{margin-bottom:0}
.article-content figure{margin:26px 0}
.article-content figure img,.article-content>img,.rich-text-block img{width:100%;border-radius:12px}
.article-content figcaption{margin-top:9px;color:var(--bs-text-muted);font-size:12px;line-height:1.5;text-align:center}
.article-content blockquote{margin:26px 0;padding:22px 25px;border-left:3px solid var(--bs-green);border-radius:0 12px 12px 0;background:var(--bs-bg-soft);color:var(--bs-charcoal)}

/* At a glance */
.facts-block{margin:0 0 44px}
.info-card{position:relative;overflow:hidden;padding:30px 32px;border:1px solid var(--bs-border);border-radius:var(--article-radius);background:var(--bs-white);box-shadow:0 14px 36px rgba(24,33,36,.06)}
.info-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--bs-energy-gradient)}
.facts-block .info-card h2{margin:0 0 22px;padding:0;color:var(--bs-charcoal);font-size:24px}
.facts-block .info-card h2::before{content:none}
.facts-block__grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 34px;margin:0}
.fact-item{display:grid;grid-template-columns:minmax(132px,.72fr) 1.28fr;gap:17px;align-items:start;padding:13px 0;border-bottom:1px solid var(--bs-border)}
.fact-item dt{color:var(--bs-charcoal);font-size:14px;font-weight:650;line-height:1.5}
.fact-item dd{margin:0;color:var(--bs-text-secondary);font-size:14px;line-height:1.58}

/* Content blocks */
.content-block__label,.related-entity__type{display:block;margin-bottom:8px;color:var(--bs-green);font-size:11px;font-weight:700;letter-spacing:.09em;text-transform:uppercase}
.article-faq-list{display:grid;gap:10px;margin:28px 0}.article-faq-item{overflow:hidden;border:1px solid #dfe8e5;border-radius:10px;background:#fff}.article-faq-item summary{padding:16px 18px;color:var(--bs-charcoal);font-weight:650;cursor:pointer}.article-faq-item>div{padding:0 18px 16px}.article-faq-item>div p:last-child{margin-bottom:0}
.answer-block{position:relative;padding:23px 25px;border:1px solid #dcebe5;border-radius:12px;background:linear-gradient(135deg,#f7fbf9,#eef8f4)}
.answer-block::before{content:"";position:absolute;top:18px;bottom:18px;left:0;width:3px;border-radius:0 3px 3px 0;background:var(--bs-energy-gradient)}
.fact-block{display:flex;align-items:baseline;gap:18px;padding:20px 23px;border:1px solid var(--bs-border);border-radius:12px;background:var(--bs-bg-soft)}
.fact-block strong{color:var(--bs-green)}
.specification-block,.table-block{overflow:hidden;border:1px solid var(--bs-border);border-radius:12px;background:var(--bs-white)}
.specification-row{display:grid;grid-template-columns:minmax(160px,.42fr) 1fr;gap:20px;padding:14px 18px;border-bottom:1px solid var(--bs-border)}
.specification-row:last-child{border-bottom:0}
.specification-row:nth-child(odd){background:var(--bs-bg-soft)}
.specification-row strong{color:var(--bs-charcoal)}
.quote-block{margin:0;padding:26px 28px;border-left:3px solid var(--bs-green);border-radius:0 12px 12px 0;background:var(--bs-bg-soft);color:var(--bs-charcoal)}
.quote-block p{margin:0;font-size:20px;line-height:1.55}
.quote-block cite{display:block;margin-top:12px;color:var(--bs-text-muted);font-size:13px;font-style:normal}
.table-block{max-width:100%;overflow-x:auto}
.table-block table{width:100%;border-collapse:collapse}
.table-block th,.table-block td{padding:13px 16px;border-bottom:1px solid var(--bs-border);text-align:left;vertical-align:top}
.table-block th{background:var(--bs-bg-soft);color:var(--bs-charcoal);font-size:13px}
.table-block tr:last-child td{border-bottom:0}

/* Video */
.article-video{position:relative;overflow:hidden;width:100%;aspect-ratio:16/9;border-radius:14px;background:var(--bs-charcoal);box-shadow:0 15px 38px rgba(24,33,36,.12)}
.article-video video,.article-video iframe{display:block;width:100%;height:100%;border:0;object-fit:cover}
.article-video__intro{margin-bottom:16px}
.article-video__poster{position:absolute;inset:0;width:100%;height:100%;padding:0;border:0;background:var(--bs-charcoal) var(--video-poster) center/cover no-repeat}
.article-video__poster::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(24,33,36,.02),rgba(24,33,36,.24))}
.article-video__poster span{position:absolute;z-index:1;top:50%;left:50%;width:66px;height:66px;border:1px solid rgba(255,255,255,.82);border-radius:50%;background:rgba(24,33,36,.55);box-shadow:0 9px 28px rgba(0,0,0,.23);transform:translate(-50%,-50%);transition:transform .2s ease,background .2s ease}
.article-video__poster span::after{content:"";position:absolute;top:50%;left:53%;border-top:9px solid transparent;border-bottom:9px solid transparent;border-left:15px solid var(--bs-white);transform:translate(-40%,-50%)}
.article-video__poster:hover span{background:var(--bs-green);transform:translate(-50%,-50%) scale(1.04)}
.article-content iframe[src*="youtube.com/embed/"],.article-content iframe[src*="youtube-nocookie.com/embed/"],.article-content iframe[src*="player.vimeo.com/video/"]{position:static!important;display:block;inset:auto!important;width:100%!important;max-width:100%;height:auto!important;aspect-ratio:16/9;border:0;border-radius:14px}

/* Sidebar */
.news-sidebar__inner{position:sticky;top:104px}
.sidebar-card{padding:22px;border:1px solid var(--bs-border);border-radius:12px;background:var(--bs-white);box-shadow:0 10px 28px rgba(24,33,36,.05)}
.sidebar-card+.sidebar-card,.sidebar-cta+.sidebar-card{margin-top:18px}
.sidebar-card h3,.sidebar-card__title{margin:0 0 15px;color:var(--bs-charcoal);font-size:16px;line-height:1.35}
.toc{display:grid;gap:3px;max-height:420px;overflow-y:auto;overscroll-behavior:contain}
.toc a{display:-webkit-box;overflow:hidden;padding:9px 10px;border-left:2px solid transparent;border-radius:0 7px 7px 0;color:var(--bs-text-secondary);font-size:13px;line-height:1.48;transition:background .18s ease,color .18s ease,border-color .18s ease;-webkit-box-orient:vertical;-webkit-line-clamp:2}
.toc a:hover,.toc a.is-active{border-left-color:var(--bs-green);background:var(--bs-energy-gradient-soft);color:var(--bs-green)}
.toc a[data-level="3"]{padding-left:22px;font-size:12.5px}.toc a[data-level="4"]{padding-left:34px;font-size:12px}
.sidebar-cta{overflow:hidden;margin-top:18px;border-radius:12px;background:linear-gradient(145deg,var(--bs-charcoal),#23383d);color:var(--bs-white);box-shadow:0 14px 34px rgba(24,33,36,.15)}
.sidebar-cta__content{padding:25px 23px}
.sidebar-cta h3{margin:0 0 10px;color:var(--bs-white);font-size:20px;line-height:1.3}
.sidebar-cta p{margin:0 0 20px;color:rgba(255,255,255,.76);font-size:14px;line-height:1.62}
.related-entity{margin-top:18px}
.related-entity__image{display:block;overflow:hidden;margin:12px 0 16px;border-radius:9px;background:var(--bs-bg-soft)}
.related-entity__image img{width:100%;aspect-ratio:16/10;object-fit:contain;transition:transform .3s ease}
.related-entity__image:hover img{transform:scale(1.02)}
.related-entity h3{margin:0 0 9px;font-size:17px;line-height:1.4}
.related-entity p{display:-webkit-box;overflow:hidden;margin:0 0 14px;color:var(--bs-text-secondary);font-size:14px;line-height:1.6;-webkit-line-clamp:3;-webkit-box-orient:vertical}
.related-entity__link{color:var(--bs-green);font-size:14px;font-weight:650}
.related-entity__link:hover{color:var(--bs-teal)}

/* Buttons, share and forms */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:0 21px;border:0;border-radius:999px;font-size:14px;font-weight:650;transition:transform .2s ease,box-shadow .2s ease}
.btn--orange{background:var(--bs-conversion-gradient);color:var(--bs-white);box-shadow:0 8px 20px rgba(242,120,44,.18)}
.btn--orange:hover{background:var(--bs-conversion-gradient-hover);transform:translateY(-1px);box-shadow:0 11px 24px rgba(242,120,44,.24)}
.btn--outline{width:100%;border:1px solid var(--bs-green);background:transparent;color:var(--bs-green)}
.article-share{display:flex;justify-content:flex-end;align-items:center;gap:15px;margin-top:48px;padding-top:22px;border-top:1px solid var(--bs-border)}
.article-share__label{color:var(--bs-text-secondary);font-size:13px;font-weight:600}
.article-share__links{display:flex;gap:7px}
.article-share__links a,.article-share__links button{display:grid;place-items:center;width:34px;height:34px;padding:0;border:1px solid var(--bs-border);border-radius:50%;background:var(--bs-energy-gradient-soft);color:var(--bs-green);font-size:12px;transition:background .2s ease,color .2s ease}
.article-share__links a:hover,.article-share__links button:hover{border-color:transparent;background:var(--bs-energy-gradient);color:var(--bs-white)}

/* Bottom CTA */
.news-bottom-cta{position:relative;overflow:hidden;padding:45px 0;background:linear-gradient(105deg,#15272b 0%,#20383d 100%);color:var(--bs-white)}
.news-bottom-cta::before{content:"";position:absolute;right:-120px;top:-180px;width:430px;height:430px;border:1px solid rgba(45,184,120,.18);border-radius:50%}
.news-bottom-cta__inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:40px}
.news-bottom-cta__eyebrow{display:block;margin-bottom:8px;color:#78d6ac;font-size:10px;font-weight:650;letter-spacing:.14em;text-transform:uppercase}
.news-bottom-cta h2{margin:0;color:var(--bs-white);font-size:30px;line-height:1.25}
.news-bottom-cta p{margin:8px 0 0;color:rgba(255,255,255,.72);font-size:14px}

/* Related articles */
.related-news{padding:62px 0 76px;background:#f7f9f8}
.section-heading h2{margin:0 0 26px;color:var(--bs-charcoal);font-size:30px;letter-spacing:-.025em}
.related-news__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{overflow:hidden;border:1px solid var(--bs-border);border-radius:14px;background:var(--bs-white);transition:transform .25s ease,box-shadow .25s ease}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--article-shadow)}
.news-card__image{display:block;overflow:hidden;aspect-ratio:16/9;background:#edf3f1}
.news-card__image img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.news-card:hover .news-card__image img{transform:scale(1.025)}
.news-card__body{padding:20px}
.news-card time{color:var(--bs-text-muted);font-size:12px}
.news-card h3{display:-webkit-box;min-height:48px;overflow:hidden;margin:9px 0 10px;color:var(--bs-charcoal);font-size:17px;line-height:1.4;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.news-card p{display:-webkit-box;min-height:45px;overflow:hidden;margin:0 0 15px;color:var(--bs-text-secondary);font-size:14px;line-height:1.6;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.news-card__link{color:var(--bs-green);font-size:14px;font-weight:650}
.news-card__link:hover{color:var(--bs-teal)}

.mobile-toc{display:none}
.bluesun-footer-v2{margin-top:0}

@media(max-width:1100px){
  .news-hero__grid{grid-template-columns:1fr 1fr;gap:38px}
  .news-main__grid{grid-template-columns:minmax(0,1fr) 270px;gap:40px}
}
@media(max-width:900px){
  body.news-detail-page{padding-bottom:66px}
  .floating-header-space{height:82px}
  .news-hero{padding:50px 0 42px}
  .news-hero__grid{grid-template-columns:1fr}
  .news-hero__media{aspect-ratio:16/9}
  .news-main{padding-top:38px}
  .news-main__grid{grid-template-columns:1fr}
  .news-sidebar{display:none}
  .mobile-toc{display:block;margin:0 0 30px;border:1px solid var(--bs-border);border-radius:10px;background:var(--bs-white)}
  .mobile-toc summary{padding:14px 16px;color:var(--bs-charcoal);font-weight:650;cursor:pointer}
  .mobile-toc .toc{max-height:300px;padding:0 12px 14px}
  .related-news__grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .news-detail-page .container{width:calc(100% - 32px)}
  .news-hero{padding:44px 0 34px}
  .news-title{font-size:clamp(32px,10vw,42px)}
  .news-title::after{width:56px;margin-top:18px}
  .news-summary{font-size:15px}
  .news-meta{gap:9px 16px}
  .news-main{padding:30px 0 52px}
  .article-section{margin-bottom:36px}
  .article-section h2,.article-content>h2{font-size:24px}
  .facts-block__grid{grid-template-columns:1fr}
  .info-card{padding:24px 20px}
  .fact-item{grid-template-columns:1fr;gap:3px}
  .answer-block{padding:20px}
  .fact-block{align-items:flex-start;flex-direction:column;gap:5px}
  .specification-row{grid-template-columns:1fr;gap:4px}
  .article-share{justify-content:space-between;flex-wrap:wrap}
  .news-bottom-cta{padding:40px 0}
  .news-bottom-cta__inner{display:grid;gap:24px}
  .news-bottom-cta h2{font-size:26px}
  .related-news{padding:48px 0 58px}
  .related-news__grid{grid-template-columns:1fr}
}