:root{
  --orange:#e98b19;
  --orange-deep:#d86e0d;
  --green:#315d3c;
  --green-deep:#173c27;
  --cream:#fbf8f1;
  --ink:#243229;
  --muted:#6c766e;
  --line:#e8e5dc;
  --white:#fff;
  --shadow:0 16px 50px rgba(34,58,42,.10);
  --radius:18px;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:#fff;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.8;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
.container{width:min(calc(100% - 40px),var(--max));margin:auto}
.site-header{position:absolute;z-index:20;left:0;right:0;top:0;color:#fff}
.site-header.is-solid{position:sticky;background:rgba(255,255,255,.96);color:var(--ink);box-shadow:0 1px 0 rgba(0,0,0,.06);backdrop-filter:blur(14px)}
.nav{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand img{width:132px;height:60px;object-fit:contain}
.site-header:not(.is-solid) .brand img{filter:drop-shadow(0 2px 8px rgba(0,0,0,.18))}
.nav-toggle{display:none;border:0;background:rgba(255,255,255,.14);color:inherit;border-radius:10px;padding:9px 12px;font-size:15px}
.nav-links{display:flex;align-items:center;gap:7px;margin:0;padding:0;list-style:none}
.nav-links a{display:block;padding:10px 14px;border-radius:999px;font-size:15px;font-weight:600;transition:.2s}
.site-header:not(.is-solid) .nav-links a:hover,.site-header:not(.is-solid) .nav-links a.active{background:rgba(255,255,255,.16)}
.site-header.is-solid .nav-links a:hover,.site-header.is-solid .nav-links a.active{color:var(--orange-deep);background:#fff4e6}
.hero{position:relative;min-height:640px;height:76vh;display:flex;align-items:center;color:#fff;background-size:cover;background-position:center}
.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,40,25,.72),rgba(13,40,25,.26) 58%,rgba(13,40,25,.10))}
.hero-inner{position:relative;z-index:1;padding-top:55px}
.hero-kicker{font-size:14px;letter-spacing:.22em;text-transform:uppercase;opacity:.9;margin-bottom:12px}
.hero h1{font-family:Georgia,"Songti SC","SimSun",serif;font-size:clamp(40px,5.5vw,72px);line-height:1.15;margin:0 0 18px;letter-spacing:.03em}
.hero p{max-width:650px;margin:0 0 28px;font-size:18px;color:rgba(255,255,255,.9)}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:999px;border:1px solid transparent;font-weight:700;transition:.2s}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 10px 25px rgba(233,139,25,.25)}
.btn-primary:hover{background:var(--orange-deep);transform:translateY(-1px)}
.btn-light{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.55);color:#fff;backdrop-filter:blur(8px)}
.btn-light:hover{background:#fff;color:var(--green)}
.page-hero{min-height:470px;height:55vh}
.page-hero h1{font-size:clamp(38px,5vw,60px)}
.section{padding:92px 0}
.section-sm{padding:64px 0}
.section-soft{background:var(--cream)}
.section-head{max-width:760px;margin:0 auto 46px;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--orange-deep);font-weight:800;font-size:13px;letter-spacing:.16em}
.eyebrow:before{content:"";width:28px;height:2px;background:var(--orange)}
.section-head h2{font-family:Georgia,"Songti SC","SimSun",serif;font-size:clamp(30px,4vw,44px);line-height:1.25;margin:10px 0 14px;color:var(--green-deep)}
.section-head p{margin:0;color:var(--muted)}
.intro{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}
.media-card{overflow:hidden;border-radius:24px;box-shadow:var(--shadow);background:#eee}
.media-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.copy h2{font-family:Georgia,"Songti SC","SimSun",serif;color:var(--green-deep);font-size:clamp(30px,3.5vw,42px);line-height:1.3;margin:0 0 18px}
.copy p{color:var(--muted);margin:0 0 16px}
.copy .btn{margin-top:10px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:20px;overflow:hidden}
.stat{background:#fff;padding:30px 20px;text-align:center}
.stat strong{display:block;font-family:Georgia,serif;font-size:36px;color:var(--orange-deep);line-height:1.1}
.stat span{display:block;margin-top:8px;color:var(--muted);font-size:14px}
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.gallery-item{position:relative;overflow:hidden;border-radius:16px;background:#ddd;box-shadow:0 8px 25px rgba(0,0,0,.06)}
.gallery-item img{width:100%;height:360px;object-fit:cover;transition:transform .45s}
.gallery-item:hover img{transform:scale(1.035)}
.gallery-label{position:absolute;left:12px;bottom:12px;background:rgba(20,40,28,.78);color:#fff;padding:5px 11px;border-radius:999px;font-size:12px}
.eco-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.eco-card{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:.25s}
.eco-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
/* 【图片框高度可调】生态环境图标展示区域上下各增加20px，避免圆形图标内容被裁切。 */
.eco-card img{width:100%;height:270px;object-fit:cover}
.eco-card-body{padding:20px 20px 22px}
.eco-num{color:var(--orange-deep);font-weight:800;font-size:12px;letter-spacing:.12em}
.eco-card h3{margin:5px 0 5px;font-size:20px;color:var(--green-deep)}
.eco-card p{margin:0;color:var(--muted);font-size:14px}
.banner{position:relative;overflow:hidden;border-radius:24px;min-height:290px;background-size:cover;background-position:center;display:flex;align-items:center;justify-content:center;text-align:center;color:#fff}
.banner:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(19,55,35,.78),rgba(19,55,35,.35))}
.banner-content{position:relative;padding:42px 25px;z-index:1}
.banner h2{font-family:Georgia,"Songti SC","SimSun",serif;font-size:clamp(28px,4vw,42px);margin:0 0 12px}
.banner p{margin:0 0 22px;color:rgba(255,255,255,.9)}
.article{max-width:860px;margin:auto}
.article h2{font-family:Georgia,"Songti SC","SimSun",serif;color:var(--green-deep);font-size:32px;margin:0 0 20px}
.article h3{color:var(--green-deep);font-size:23px;margin:42px 0 12px}
.article p{color:#59655c;margin:0 0 18px}
.article img{width:100%;border-radius:18px;margin:28px 0;box-shadow:0 10px 35px rgba(0,0,0,.08)}
.timeline{position:relative;margin-top:40px}
.timeline:before{content:"";position:absolute;left:88px;top:0;bottom:0;width:1px;background:#dfe4dd}
.timeline-item{display:grid;grid-template-columns:72px 1fr;gap:45px;position:relative;padding-bottom:34px}
.timeline-year{font-weight:800;color:var(--orange-deep);text-align:right}
.timeline-item:before{content:"";position:absolute;left:83px;top:8px;width:10px;height:10px;border:3px solid #fff;background:var(--orange);border-radius:50%;box-shadow:0 0 0 1px var(--orange)}
.timeline-item h3{margin:0 0 6px;font-size:19px;color:var(--green-deep)}
.timeline-item p{margin:0;color:var(--muted);font-size:15px}
.product-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.product-grid img{width:100%;border-radius:18px;box-shadow:0 10px 35px rgba(0,0,0,.07)}
.contact-layout{display:grid;grid-template-columns:1fr 1.2fr;gap:50px;align-items:center}
.contact-card{background:var(--green-deep);color:#fff;border-radius:24px;padding:42px}
.contact-card h2{font-family:Georgia,"Songti SC","SimSun",serif;font-size:34px;margin:0 0 12px}
.contact-card p{color:rgba(255,255,255,.76);margin:0 0 25px}
.contact-points{display:grid;gap:12px}
.contact-point{padding:13px 0;border-top:1px solid rgba(255,255,255,.14);font-size:14px}
.contact-image{border-radius:24px;overflow:hidden;box-shadow:var(--shadow)}
.contact-image img{width:100%}
.site-footer{background:var(--green-deep);color:#fff;padding:50px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:35px}
.footer-brand img{width:132px;height:60px;object-fit:contain;filter:brightness(0) invert(1)}
.footer-brand p{color:rgba(255,255,255,.65);max-width:390px;font-size:14px;margin:14px 0 0}
.footer-col h3{font-size:15px;margin:4px 0 14px}
.footer-col a{display:block;color:rgba(255,255,255,.62);font-size:14px;margin:6px 0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:18px;text-align:center;color:rgba(255,255,255,.48);font-size:12px}
.mobile-cta{display:none !important}
.reveal{animation:fadeUp .7s both}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
@media(max-width:900px){
  .container{width:min(calc(100% - 30px),var(--max))}
  .nav{height:70px}
  .nav-toggle{display:block}
  .nav-links{display:none;position:absolute;top:70px;left:15px;right:15px;background:#fff;color:var(--ink);padding:10px;border-radius:16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
  .nav-links.open{display:flex}
  .nav-links a{padding:11px 14px}
  .site-header:not(.is-solid) .nav-links a.active{background:#fff4e6;color:var(--orange-deep)}
  .hero{min-height:600px;height:72vh}
  .intro,.contact-layout{grid-template-columns:1fr;gap:32px}
  .gallery{grid-template-columns:repeat(3,1fr)}
  .eco-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr}
  .footer-grid .footer-col:last-child{display:none}
}
@media(max-width:600px){
  body{font-size:15px}
  .section{padding:65px 0}
  .section-sm{padding:48px 0}
  .hero{min-height:600px;height:78vh;background-position:62% center}
  .hero-inner{padding-top:45px}
  .hero h1{font-size:39px}
  .hero p{font-size:16px}
  .page-hero{min-height:410px;height:52vh}
  .page-hero h1{font-size:37px}
  .stats{grid-template-columns:1fr 1fr}
  .stat{padding:22px 10px}
  .stat strong{font-size:28px}
  .gallery{grid-template-columns:repeat(2,1fr);gap:12px}
  .gallery-item img{height:300px}
  .eco-grid{grid-template-columns:1fr}
  .product-grid{grid-template-columns:1fr}
  .timeline:before{left:16px}
  .timeline-item{grid-template-columns:1fr;gap:4px;padding-left:42px}
  .timeline-year{text-align:left}
  .timeline-item:before{left:11px}
  .contact-card{padding:30px 24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .footer-brand{grid-column:1/-1}
  .footer-grid .footer-col:last-child{display:block}
  .mobile-cta{display:none !important}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{animation:none}.gallery-item img,.eco-card{transition:none}}
/* v2 orange brand refinement */
:root{
  --orange:#e87512;
  --orange-deep:#c95608;
  --orange-soft:#fff1df;
  --green:#8a3d0b;
  --green-deep:#3f2113;
  --cream:#fff9f1;
  --ink:#34251d;
  --muted:#74685f;
  --line:#f0dfcf;
  --shadow:0 16px 50px rgba(113,57,18,.12);
}
.site-header.is-solid{background:rgba(255,250,244,.96)}
.site-header.is-solid .nav-links a:hover,.site-header.is-solid .nav-links a.active{color:var(--orange-deep);background:var(--orange-soft)}
.site-header:not(.is-solid) .nav-links a:hover,.site-header:not(.is-solid) .nav-links a.active{background:rgba(232,117,18,.24)}
/* 【顶部背景图】已按要求去除阴影/渐变遮罩，让原图保持真实明亮效果。 */
.hero:before{display:none}
.btn-primary{background:var(--orange);box-shadow:0 10px 25px rgba(232,117,18,.28)}
.btn-primary:hover{background:var(--orange-deep)}
.btn-light:hover{color:var(--orange-deep)}
.section-soft{background:var(--cream)}
.eyebrow{color:var(--orange-deep)}
.eyebrow:before{background:var(--orange)}
.section-head h2,.copy h2,.article h2,.article h3,.timeline-item h3{color:var(--green-deep)}
.stat strong,.eco-num,.timeline-year{color:var(--orange-deep)}
.eco-card:hover{box-shadow:var(--shadow)}
.banner:before{display:none}
.contact-card{background:var(--green-deep)}
.site-footer{background:#3f2113}
.video-section{background:#fff}
.video-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:55px;align-items:center}
.video-copy h2{font-family:Georgia,"Songti SC","SimSun",serif;color:var(--green-deep);font-size:clamp(30px,3.5vw,42px);line-height:1.3;margin:10px 0 18px}
.video-copy p{color:var(--muted);margin:0 0 18px}
.video-card{overflow:hidden;border-radius:22px;background:#1c130e;box-shadow:0 18px 55px rgba(83,39,10,.18)}
.video-card video{display:block;width:100%;aspect-ratio:16/9;background:#1c130e;object-fit:cover}
.video-caption{display:flex;justify-content:space-between;gap:16px;padding:12px 17px;color:rgba(255,255,255,.75);font-size:13px}
.video-caption span:last-child{color:#ffb45d;font-weight:800;letter-spacing:.08em}
.honor-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.honor-card{padding:28px 24px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 8px 25px rgba(113,57,18,.05);transition:.25s}
.honor-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.honor-year{font-size:13px;letter-spacing:.1em;color:var(--orange-deep);font-weight:800;margin-bottom:12px}
.honor-card h3{margin:0 0 8px;color:var(--green-deep);font-size:20px}
.honor-card p{margin:0;color:var(--muted);font-size:14px}
@media(max-width:900px){.video-layout{grid-template-columns:1fr;gap:30px}.honor-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.honor-grid{grid-template-columns:1fr}.video-card{border-radius:16px}.video-caption{font-size:12px}}


/* v3 typography: 大标题统一使用黑体/无衬线中文字体，避免宋体或衬线字体造成视觉不统一。 */
.hero h1,
.page-hero h1,
.section-head h2,
.copy h2,
.article h2,
.article h3,
.timeline-item h3,
.banner h2,
.video-copy h2,
.contact-card h2,
.honor-card h3,
.product-grid h2 {
  font-family: SimHei, "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-weight: 700;
  letter-spacing: -0.015em;
}

/* 首页大标题保持白色，仅更换字体为黑体。 */
.hero h1, .page-hero h1 { font-family: SimHei, "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif; }

/* 图片统一保持可控的响应式比例，方便后续替换不同尺寸的图片。 */
img { max-width: 100%; }


/* v4：品牌海报改为横向滑动展示。支持鼠标拖动、触摸左右滑动，以及左右箭头。 */
.gallery-wrap{position:relative;margin:0 -2px}
.gallery-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 14px}
.gallery-hint{font-size:13px;color:var(--muted);letter-spacing:.04em}
.gallery-arrow{width:42px;height:42px;border:1px solid var(--line);border-radius:50%;background:#fff;color:var(--orange-deep);font-size:30px;line-height:1;display:grid;place-items:center;cursor:pointer;box-shadow:0 7px 22px rgba(113,57,18,.08);transition:.2s;z-index:2}
.gallery-arrow:hover{background:var(--orange);border-color:var(--orange);color:#fff;transform:translateY(-1px)}
.gallery{display:flex;gap:18px;overflow-x:auto;overflow-y:hidden;scroll-snap-type:x mandatory;scroll-behavior:smooth;padding:2px 2px 16px;cursor:grab;overscroll-behavior-x:contain;scrollbar-width:thin;scrollbar-color:var(--orange) transparent}
.gallery:active{cursor:grabbing}
.gallery::-webkit-scrollbar{height:6px}
.gallery::-webkit-scrollbar-track{background:#f6eee6;border-radius:999px}
.gallery::-webkit-scrollbar-thumb{background:var(--orange);border-radius:999px}
.gallery-item{flex:0 0 300px;width:300px;min-width:300px;scroll-snap-align:start}
.gallery-item img{width:300px;height:529px;display:block;object-fit:cover}
@media(max-width:1100px){.gallery-item{flex-basis:300px;min-width:300px}}
@media(max-width:900px){.gallery-item{flex-basis:300px;min-width:300px}}
@media(max-width:600px){.gallery-toolbar{margin-bottom:10px}.gallery-hint{font-size:12px}.gallery-arrow{width:36px;height:36px;font-size:25px}.gallery{gap:12px;padding-bottom:12px;scroll-snap-type:x mandatory}.gallery-item{flex-basis:300px;min-width:300px}.gallery-item img{width:300px;height:529px}}
@media(prefers-reduced-motion:reduce){.gallery{scroll-behavior:auto}}


/* v5：品牌海报点击查看大图。点击缩略图后在当前页面打开，不离开网站。 */
.image-lightbox{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:24px;background:rgba(20,12,8,.88);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s ease}
.image-lightbox.is-open{opacity:1;visibility:visible;pointer-events:auto}
.image-lightbox-img{display:block;width:auto;height:auto;max-width:min(92vw,900px);max-height:92vh;object-fit:contain;box-shadow:0 20px 70px rgba(0,0,0,.35);border-radius:8px}
.image-lightbox-close{position:absolute;top:18px;right:22px;width:44px;height:44px;border:0;border-radius:50%;background:rgba(255,255,255,.14);color:#fff;font-size:32px;line-height:1;cursor:pointer}
.image-lightbox-close:hover{background:var(--orange);}
body.lightbox-open{overflow:hidden}

/* v9：企业内容页增强组件 —— 关于我们、生态环境、品牌产品、联系我们 */
.about-story{display:grid;grid-template-columns:1.05fr .95fr;gap:58px;align-items:center}
.about-story .story-image{border-radius:24px;overflow:hidden;box-shadow:var(--shadow)}
.about-story .story-image img{width:100%;aspect-ratio:4/3;object-fit:cover}
.story-badge{display:inline-flex;padding:8px 13px;border-radius:999px;background:var(--orange-soft);color:var(--orange-deep);font-size:12px;font-weight:800;letter-spacing:.1em;margin-bottom:12px}
.about-story h2,.content-title{font-family:SimHei,"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;color:var(--green-deep);font-size:clamp(30px,3.5vw,44px);line-height:1.28;margin:0 0 18px}
.about-story p,.content-copy p{color:var(--muted);margin:0 0 16px}
.about-highlights{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px}
.about-highlight{padding:18px;background:#fff;border:1px solid var(--line);border-radius:16px}
.about-highlight strong{display:block;color:var(--orange-deep);font-size:24px;line-height:1.1;margin-bottom:6px}
.about-highlight span{font-size:13px;color:var(--muted)}
.honor-showcase{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.honor-photo{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:0 10px 35px rgba(113,57,18,.06)}
.honor-photo img{width:100%;aspect-ratio:900/620;object-fit:cover}
.honor-photo-body{padding:22px 24px 24px}
.honor-photo-body .honor-year{margin-bottom:7px}
.honor-photo-body h3{margin:0 0 7px;font-size:21px;color:var(--green-deep)}
.honor-photo-body p{margin:0;color:var(--muted);font-size:14px}
.eco-feature{display:grid;grid-template-columns:.9fr 1.1fr;gap:58px;align-items:center}
.eco-feature-image{overflow:hidden;border-radius:24px;box-shadow:var(--shadow)}
.eco-feature-image img{width:100%;aspect-ratio:4/3;object-fit:cover}
.eco-list{display:grid;gap:14px;margin-top:24px}
.eco-list-item{display:grid;grid-template-columns:54px 1fr;gap:14px;align-items:start;padding:15px 0;border-top:1px solid var(--line)}
.eco-icon{width:44px;height:44px;border-radius:14px;background:var(--orange-soft);color:var(--orange-deep);display:grid;place-items:center;font-weight:800}
.eco-list-item h3{margin:0 0 4px;font-size:18px;color:var(--green-deep)}
.eco-list-item p{margin:0;color:var(--muted);font-size:14px}
.eco-photo-grid{display:grid;grid-template-columns:1.15fr .85fr .85fr;grid-template-rows:220px 220px;gap:16px}
.eco-photo-grid figure{margin:0;position:relative;overflow:hidden;border-radius:18px;background:#eee}
.eco-photo-grid figure:first-child{grid-row:1/3}
.eco-photo-grid img{width:100%;height:100%;object-fit:cover}
.eco-photo-grid figcaption{position:absolute;left:12px;bottom:12px;background:rgba(63,33,19,.78);color:#fff;padding:6px 11px;border-radius:999px;font-size:12px}
.product-showcase{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.product-card{background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:0 10px 35px rgba(113,57,18,.06);transition:.25s}
.product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.product-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.product-card-body{padding:24px 24px 26px}
.product-tag{display:inline-flex;padding:5px 10px;border-radius:999px;background:var(--orange-soft);color:var(--orange-deep);font-size:11px;font-weight:800;letter-spacing:.08em}
.product-card h3{margin:11px 0 7px;color:var(--green-deep);font-size:23px}
.product-card p{margin:0;color:var(--muted);font-size:14px}
.product-specs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:18px}
.product-specs span{padding:9px 7px;text-align:center;background:var(--cream);border-radius:10px;color:#705d50;font-size:12px}
.product-process{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.process-card{padding:24px 18px;background:#fff;border:1px solid var(--line);border-radius:18px;text-align:center}
.process-num{width:38px;height:38px;margin:0 auto 12px;border-radius:50%;background:var(--orange);color:#fff;display:grid;place-items:center;font-weight:800}
.process-card h3{margin:0 0 5px;color:var(--green-deep);font-size:17px}
.process-card p{margin:0;color:var(--muted);font-size:13px}
.contact-info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}
.contact-info-card{padding:24px;background:#fff;border:1px solid var(--line);border-radius:18px}
.contact-info-card .contact-label{color:var(--orange-deep);font-size:12px;font-weight:800;letter-spacing:.12em;margin-bottom:8px}
.contact-info-card h3{margin:0 0 6px;color:var(--green-deep);font-size:19px}
.contact-info-card p{margin:0;color:var(--muted);font-size:14px;word-break:break-word}
.contact-main{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:stretch}
.contact-form-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:34px;box-shadow:var(--shadow)}
.contact-form-card h2{margin:0 0 8px;color:var(--green-deep);font-size:30px}
.contact-form-card>p{margin:0 0 24px;color:var(--muted)}
.contact-list{display:grid;gap:0}
.contact-row{display:grid;grid-template-columns:110px 1fr;gap:15px;padding:15px 0;border-top:1px solid var(--line)}
.contact-row strong{color:var(--green-deep);font-size:14px}
.contact-row span{color:var(--muted);font-size:14px}
.contact-photo{overflow:hidden;border-radius:24px;box-shadow:var(--shadow);min-height:100%}
.contact-photo img{width:100%;height:100%;min-height:420px;object-fit:cover}
.contact-notice{margin-top:18px;padding:16px 18px;border-radius:14px;background:var(--orange-soft);color:#7c4a2d;font-size:13px}
@media(max-width:900px){
  .about-story,.eco-feature,.contact-main{grid-template-columns:1fr;gap:30px}
  .honor-showcase{grid-template-columns:1fr 1fr}
  .eco-photo-grid{grid-template-columns:1fr 1fr;grid-template-rows:260px 180px}
  .eco-photo-grid figure:first-child{grid-row:1/3}
  .product-showcase{grid-template-columns:1fr 1fr}
  .product-process{grid-template-columns:repeat(2,1fr)}
  .contact-info-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  .about-highlights{grid-template-columns:1fr}
  .honor-showcase,.product-showcase,.contact-info-grid{grid-template-columns:1fr}
  .eco-photo-grid{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:190px 190px}
  .eco-photo-grid figure:first-child{grid-column:1/-1;grid-row:auto}
  .eco-photo-grid figure{height:190px}
  .product-process{grid-template-columns:1fr 1fr}
  .contact-form-card{padding:25px 20px}
  .contact-row{grid-template-columns:88px 1fr}
}

/* v10：品牌产品页改为两个核心区块——品牌、产品，保持简洁明了。 */
.brand-intro{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:center}
.brand-visual{min-height:380px;border-radius:24px;background:linear-gradient(145deg,#fff7e9,#fff);border:1px solid var(--line);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:36px;box-shadow:var(--shadow);text-align:center}
.brand-logo-large{width:132px;height:60px;object-fit:contain;margin-bottom:22px}
.brand-mark-text{font-family:SimHei,"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;font-size:clamp(36px,5vw,58px);font-weight:700;color:var(--green-deep);letter-spacing:.04em}
.brand-mark-sub{margin-top:12px;color:var(--orange-deep);font-size:13px;letter-spacing:.14em}
.brand-copy h3,.product-feature-copy h3,.product-note h3{font-family:SimHei,"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;color:var(--green-deep);font-size:clamp(28px,3.3vw,42px);line-height:1.3;margin:0 0 18px}
.brand-copy p,.product-feature-copy p,.product-note p{color:var(--muted);line-height:1.9;margin:0 0 20px}
.brand-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
.brand-points div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px}
.brand-points strong{display:block;color:var(--orange-deep);font-size:14px;margin-bottom:6px}
.brand-points span{font-size:14px;color:var(--muted)}
.product-feature{display:grid;grid-template-columns:1.05fr .95fr;gap:58px;align-items:center}
.product-feature-image{border-radius:24px;overflow:hidden;box-shadow:var(--shadow);background:#fff}
.product-feature-image img{width:100%;aspect-ratio:4/3;display:block;object-fit:cover}
.product-info-list{border-top:1px solid var(--line);margin:24px 0 26px}
.product-info-list div{display:flex;justify-content:space-between;gap:20px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14px}
.product-info-list b{color:var(--green-deep)}
.product-info-list span{color:var(--muted);text-align:right}
.product-note{display:grid;grid-template-columns:280px 1fr;gap:30px;align-items:center;margin-top:60px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:20px}
.product-note img{width:280px;height:190px;object-fit:cover;border-radius:14px}
.product-note h3{font-size:28px;margin:8px 0 10px}
.product-note p{margin:0}
@media(max-width:900px){.brand-intro,.product-feature{grid-template-columns:1fr;gap:30px}.brand-visual{min-height:300px}.product-note{grid-template-columns:1fr}.product-note img{width:100%;height:auto;aspect-ratio:16/9}}
@media(max-width:600px){.brand-points{grid-template-columns:1fr}.brand-visual{padding:28px 20px}.product-info-list div{font-size:13px}.product-note{margin-top:40px}}


/* v13：手机端顶部导航优化
   - 汉堡按钮改为简洁图标，点击区域更大
   - 下拉菜单增加圆角、分隔线和当前页橙色指示
   - 菜单打开时锁定页面滚动，避免误滑动
   - 适配小屏手机，避免导航遮挡内容
*/
.nav-toggle{align-items:center;justify-content:center;gap:7px;min-width:44px;min-height:44px;cursor:pointer;-webkit-tap-highlight-color:transparent}
.nav-toggle-icon{width:20px;height:18px;display:flex;flex-direction:column;justify-content:space-between}
.nav-toggle-icon i{display:block;width:20px;height:2px;border-radius:2px;background:currentColor;transition:transform .2s,opacity .2s}
.nav-toggle-text{font-size:14px;font-weight:700}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon i:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon i:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
.nav-backdrop{display:none}
@media(max-width:900px){
  body.nav-menu-open{overflow:hidden}
  .site-header{position:fixed;top:0;transition:background .2s,box-shadow .2s}
  .site-header:not(.is-solid){background:transparent;backdrop-filter:none;-webkit-backdrop-filter:none}
  .nav{height:68px}
  .brand img{width:112px;height:52px}
  .nav-toggle{display:flex;background:rgba(255,255,255,.94);color:var(--orange-deep);border:1px solid rgba(232,117,18,.18);border-radius:12px;box-shadow:0 5px 18px rgba(0,0,0,.10)}
  .site-header:not(.is-solid) .nav-toggle{background:rgba(255,255,255,.95)}
  .nav-links{display:flex;visibility:hidden;opacity:0;pointer-events:none;position:fixed;z-index:25;top:68px;left:12px;right:12px;margin:0;padding:8px;background:rgba(255,253,249,.98);color:var(--ink);border:1px solid var(--line);border-radius:18px;box-shadow:0 18px 50px rgba(76,43,20,.18);flex-direction:column;align-items:stretch;gap:0;transform:translateY(-8px);transition:opacity .2s,transform .2s,visibility .2s}
  .nav-links.open{visibility:visible;opacity:1;pointer-events:auto;transform:translateY(0)}
  .nav-links li+li{border-top:1px solid #f1e5da}
  .nav-links a{position:relative;padding:14px 16px;border-radius:12px;font-size:16px;font-weight:700}
  .nav-links a:after{content:'›';position:absolute;right:16px;top:50%;transform:translateY(-50%);font-size:20px;color:#c9b7a9;transition:.2s}
  .nav-links a:hover:after,.nav-links a.active:after{color:var(--orange-deep);right:12px}
  .nav-links a.active{background:var(--orange-soft);color:var(--orange-deep)}
  .nav-backdrop{display:block;position:fixed;inset:68px 0 0;background:rgba(30,20,12,.28);backdrop-filter:blur(2px);z-index:19;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
  .nav-backdrop.is-open{opacity:1;visibility:visible;pointer-events:auto}
}
@media(max-width:380px){
  .nav{height:64px}
  .brand img{width:102px;height:48px}
  .nav-links{top:64px;left:8px;right:8px}
  .nav-backdrop{inset:64px 0 0}
  .nav-toggle-text{display:none}
}

/* v15：首页首屏改为使用上传的PNG品牌素材，删除原HTML文字按钮。
   素材保持原比例，自适应PC、平板和手机，不会被拉伸变形。 */
/* 【首页PNG主视觉定位】
   使用原始PNG，不改变色彩、不拉伸。
   水平方向偏左，上下方向保持居中，并整体略向左上区域靠拢。
   图片最大显示高度不超过首屏高度的50%。
*/
.hero-material{position:absolute;z-index:1;left:0;top:50%;transform:translateY(-50%);width:min(76vw,920px);height:50%;display:flex;align-items:center;justify-content:flex-start;padding:0;}
.hero-material img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:left center;filter:none;}
@media(max-width:900px){
  .hero-material{left:0;top:50%;width:min(88vw,760px);height:50%;transform:translateY(-50%);}
  .hero-material img{max-width:100%;max-height:100%;}
}
@media(max-width:600px){
  .hero-material{left:0;top:50%;width:94vw;height:50%;transform:translateY(-50%);}
  .hero-material img{max-height:72vh;}
  .hero{min-height:520px;height:72vh;background-position:center center;}
}

/* v16：首页PNG主视觉定位与尺寸
   1. 使用上传的原始PNG，不做色彩调整、滤镜或变形。
   2. 图片左边缘与顶部LOGO左边缘对齐。
   3. 图片在首屏区域内水平偏左、垂直居中。
   4. 图片高度最多占首屏可视高度的50%，始终等比例缩放。
*/
.hero-material{
  position:absolute;
  z-index:1;
  left:max(20px, calc((100vw - var(--max)) / 2));
  top:50%;
  transform:translateY(-50%);
  width:min(50vw, 720px);
  height:50%;
  max-height:50%;
  display:flex;
  align-items:center;
  justify-content:flex-start;
  padding:0;
}
.hero-material img{
  display:block;
  width:auto;
  height:auto;
  max-width:100%;
  max-height:100%;
  object-fit:contain;
  object-position:left center;
  filter:none;
}
@media(max-width:900px){
  .hero-material{
    left:15px;
    width:min(56vw, 560px);
    height:50%;
    max-height:50%;
  }
}
@media(max-width:600px){
  .hero-material{
    left:15px;
    width:64vw;
    height:50%;
    max-height:50%;
  }
}

/* V21：手机端顶部导航优化：仅保留右侧三横线菜单按钮，去除“菜单”文字；
   同时彻底隐藏手机端底部浮动导航栏。 */
@media(max-width:900px){
  .nav{display:flex;align-items:center;justify-content:space-between;}
  .nav-toggle{margin-left:auto;width:44px;min-width:44px;height:44px;padding:0;display:flex;align-items:center;justify-content:center;gap:0;}
  .nav-toggle-text{display:none !important;}
  .mobile-cta{display:none !important;}
}


/* V22：底部技术标识二维码。鼠标悬停或键盘聚焦“技术：DANSHENGNET”时显示二维码。 */
.tech-credit{position:relative;display:inline-block;color:rgba(255,255,255,.68);cursor:help;outline:none;margin-left:4px}
.tech-qr-tooltip{position:absolute;left:50%;bottom:calc(100% + 12px);transform:translateX(-50%) translateY(6px);width:150px;padding:10px;background:#fff;border:1px solid rgba(232,117,18,.22);border-radius:12px;box-shadow:0 14px 35px rgba(0,0,0,.18);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .18s ease,transform .18s ease,visibility .18s ease;z-index:100}
.tech-qr-tooltip img{display:block;width:128px;height:128px;margin:0 auto 6px;object-fit:contain}
.tech-qr-tooltip small{display:block;color:#666;font-size:10px;line-height:1.4;text-align:center}
.tech-credit:hover .tech-qr-tooltip,.tech-credit:focus .tech-qr-tooltip,.tech-credit:focus-within .tech-qr-tooltip{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}

/* V22：品牌产品页“线上选购渠道”区块。 */
.online-purchase{display:grid;grid-template-columns:1fr 220px;gap:42px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:24px;padding:34px 38px;box-shadow:0 10px 30px rgba(0,0,0,.04)}
.online-purchase-copy h3{font-family:Georgia,"Songti SC","SimSun",serif;font-size:30px;color:var(--ink);margin:0 0 12px}
.online-purchase-copy p{margin:0;max-width:720px;color:var(--muted);line-height:1.9}
.purchase-tip{display:inline-flex;gap:18px;align-items:center;margin-top:20px;padding:11px 15px;border-radius:10px;background:var(--orange-soft);color:var(--orange-deep);font-size:14px}
.purchase-tip strong{font-weight:800}
.purchase-qr{text-align:center;padding:12px 8px}
.purchase-qr img{display:block;width:150px;height:150px;object-fit:contain;margin:0 auto 10px;background:#fff}
.purchase-qr span{display:block;color:var(--ink);font-size:14px;font-weight:800}
.purchase-qr small{display:block;margin-top:5px;color:#999;font-size:11px}
@media(max-width:700px){
  .online-purchase{grid-template-columns:1fr;gap:20px;padding:25px 20px;text-align:left}
  .online-purchase-copy h3{font-size:26px}
  .purchase-qr{padding-top:4px}
  .purchase-qr img{width:138px;height:138px}
  .tech-qr-tooltip{left:auto;right:0;transform:translateY(6px);bottom:calc(100% + 10px)}
  .tech-credit:hover .tech-qr-tooltip,.tech-credit:focus .tech-qr-tooltip,.tech-credit:focus-within .tech-qr-tooltip{transform:translateY(0)}
}

/* V23：响应式首屏/页面横幅图片
   PC、平板使用横向素材；手机自动切换为独立竖向素材。
   【图片可替换】手机端文件名中的 -mobile.webp 可直接替换成真实竖版图片。
   图片使用 object-fit:cover，仅对横幅背景进行等比例铺满，不拉伸变形。
*/
.responsive-hero{overflow:hidden;background:none !important;}
.responsive-hero .hero-bg{position:absolute;inset:0;z-index:0;display:block;overflow:hidden;}
.responsive-hero .hero-bg img{width:100%;height:100%;object-fit:cover;object-position:center center;display:block;}
.responsive-hero .hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,40,25,.72),rgba(13,40,25,.26) 58%,rgba(13,40,25,.10));pointer-events:none;}
@media(max-width:767px){
  .responsive-hero .hero-bg img{object-position:center center;}
}
/* V23：首页PNG在手机端使用独立竖向素材；仍然等比例显示，不变形。 */
.hero-material picture{display:flex;align-items:center;justify-content:flex-start;width:100%;height:100%;}
.hero-material picture img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;}
@media(max-width:767px){
  .hero-material{left:max(16px, calc((100vw - var(--max)) / 2));width:min(86vw,520px);height:50%;}
  .hero-material picture{justify-content:flex-start;}
  .hero-material picture img{max-width:100%;max-height:100%;}
}

/* V23补充：响应式横幅已经自带遮罩，关闭旧版 hero::before，避免手机/PC重复变暗。 */
.responsive-hero::before{display:none;}

/* V24：首页首屏背景图彻底取消黑色/深色透明遮罩。
   背景图直接显示原始亮度与色彩，不叠加渐变或半透明黑层。 */
.hero::before,
.hero::after,
.responsive-hero::before,
.responsive-hero::after,
.hero-bg::before,
.hero-bg::after{
  content:none !important;
  display:none !important;
  background:none !important;
  opacity:0 !important;
}
.hero-bg,
.hero-bg img{
  filter:none !important;
}

/* V25：首页底部图片取消黑色透明层
   仅作用于首页底部 banner，背景图片保持原始色彩与亮度。 */
.banner.no-banner-overlay::before{
  display:none !important;
  content:none !important;
  background:none !important;
}
.banner.no-banner-overlay{
  isolation:isolate;
}


/* V26：移动端/平板端导航与底部导航优化
   1. 顶部未滚动时保持纯透明，不使用半透明底色和模糊。
   2. 底部不使用悬浮导航，统一使用页脚导航，并优化排列。
   3. 首页底部品牌横幅不使用透明遮罩。 */
@media (max-width:900px){
  .site-header:not(.is-solid){background:transparent !important;backdrop-filter:none !important;-webkit-backdrop-filter:none !important;box-shadow:none !important}
  .footer-grid{grid-template-columns:1.35fr 1fr 1fr;gap:22px}
  .footer-grid .footer-col{display:block !important}
  .footer-col a{padding:2px 0}
  .footer-bottom{line-height:1.9}
}
@media (max-width:600px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:20px 16px}
  .footer-brand{grid-column:1/-1}
  .footer-col h3{margin-bottom:9px}
  .footer-col a{font-size:13px;margin:4px 0}
  .footer-bottom{font-size:11px;padding:15px 8px 0}
  .tech-credit{display:inline-block}
}

/* V27：手机/平板页脚重新排版
   品牌信息单独一行，下方企业/品牌/联系三列等宽排列，减少空白并提升视觉平衡。 */
@media (max-width:1024px){
  .site-footer{padding:34px 0 18px}
  .footer-grid{
    grid-template-columns:repeat(3,minmax(0,1fr)) !important;
    gap:0 22px !important;
    align-items:start;
  }
  .footer-brand{
    grid-column:1/-1 !important;
    text-align:center;
    margin-bottom:22px;
  }
  .footer-brand img{margin:0 auto;width:132px;height:60px}
  .footer-brand p{max-width:620px;margin:9px auto 0;font-size:13px;line-height:1.7}
  .footer-col{text-align:center}
  .footer-col h3{font-size:15px;margin:0 0 8px;font-weight:800}
  .footer-col a{font-size:13px;margin:3px 0;line-height:1.8}
  .footer-bottom{margin-top:24px;padding:13px 8px 0;font-size:11px;line-height:1.75}
}
@media (max-width:600px){
  .site-footer{padding:28px 0 14px}
  .footer-grid{gap:0 10px !important}
  .footer-brand{margin-bottom:17px}
  .footer-brand img{width:124px;height:56px}
  .footer-brand p{font-size:12px;line-height:1.65;max-width:100%}
  .footer-col h3{font-size:14px;margin-bottom:5px}
  .footer-col a{font-size:12px;margin:2px 0;line-height:1.7}
  .footer-bottom{margin-top:19px;padding-top:11px;font-size:10px;line-height:1.8}
}

/* V27：首页顶部 PNG 主视觉
   手机/平板：放大并水平居中，使用 V27 裁切版 PNG，避免原素材透明留白造成视觉过小。 */
@media (min-width:768px) and (max-width:1024px){
  .hero-material{
    left:50% !important;
    top:52% !important;
    width:88vw !important;
    max-width:920px !important;
    height:auto !important;
    transform:translate(-50%,-50%) !important;
    justify-content:center !important;
  }
  .hero-material picture{justify-content:center !important;height:auto !important}
  .hero-material picture img{
    width:100% !important;
    max-width:none !important;
    max-height:none !important;
    height:auto !important;
  }
}
@media (max-width:767px){
  .hero-material{
    left:50% !important;
    top:50% !important;
    width:96vw !important;
    max-width:none !important;
    height:auto !important;
    transform:translate(-50%,-50%) !important;
    justify-content:center !important;
  }
  .hero-material picture{justify-content:center !important;height:auto !important}
  .hero-material picture img{
    width:100% !important;
    max-width:none !important;
    max-height:none !important;
    height:auto !important;
  }
}


/* V27.1：首页顶部PNG主视觉最终优化
   手机端/平板端：适中放大、水平居中、左右保留舒适边距；
   垂直位置靠近首屏顶部，保留适中的顶部留白；始终等比例显示。 */
@media (min-width:768px) and (max-width:1024px){
  .hero-material{
    left:50% !important;
    top:9% !important;
    width:82vw !important;
    max-width:840px !important;
    height:auto !important;
    transform:translateX(-50%) !important;
    display:flex !important;
    justify-content:center !important;
    align-items:flex-start !important;
  }
  .hero-material picture{
    width:100% !important;
    height:auto !important;
    display:flex !important;
    justify-content:center !important;
    align-items:flex-start !important;
  }
  .hero-material picture img{
    width:100% !important;
    height:auto !important;
    max-width:none !important;
    max-height:none !important;
    object-fit:contain !important;
  }
}

@media (max-width:767px){
  .hero-material{
    left:50% !important;
    top:8% !important;
    width:86vw !important;
    max-width:680px !important;
    height:auto !important;
    transform:translateX(-50%) !important;
    display:flex !important;
    justify-content:center !important;
    align-items:flex-start !important;
  }
  .hero-material picture{
    width:100% !important;
    height:auto !important;
    display:flex !important;
    justify-content:center !important;
    align-items:flex-start !important;
  }
  .hero-material picture img{
    width:100% !important;
    height:auto !important;
    max-width:none !important;
    max-height:none !important;
    object-fit:contain !important;
  }
}

/* V27.2：首页顶部PNG主视觉左右留白再增加约2倍
   基于V27.1当前尺寸：手机由86vw调整为72vw，平板由82vw调整为64vw；
   保持水平居中、顶部位置及图片原始比例不变。 */
@media (min-width:768px) and (max-width:1024px){
  .hero-material{
    width:64vw !important;
    max-width:660px !important;
  }
}
@media (max-width:767px){
  .hero-material{
    width:72vw !important;
    max-width:570px !important;
  }
}


/* V27.2 顶部位置优化：手机端和平板端首页 PNG 主视觉距离首屏顶部约 20%，保持 V27.2 左右留白及水平居中不变。 */
@media (min-width:768px) and (max-width:1024px){
  .hero-material{top:20% !important;}
}
@media (max-width:767px){
  .hero-material{top:20% !important;}
}

/* V27.3：首页顶部PNG主视觉优化
   手机端/平板端适当缩小，保持水平居中；顶部距离调整为约10%，避免主视觉过低或过大。 */
@media (min-width:768px) and (max-width:1024px){
  .hero-material{
    top:10% !important;
    width:58vw !important;
    max-width:600px !important;
  }
}
@media (max-width:767px){
  .hero-material{
    top:10% !important;
    width:64vw !important;
    max-width:510px !important;
  }
}