/* 优泽天盛 · 环保官网 全站样式 v2 —— 精细化版 */
:root{
  --ink:#0C2A20; --ink2:#33534A; --muted:#6E8A7E;
  --green:#58B028; --green-ink:#3A7A16; --green-soft:#EAF6E2;
  --blue:#2080B0; --blue-soft:#E4F1F8;
  --bg:#F6FAF8; --card:#FFFFFF; --line:#E2EDE7;
  --gold:#D9A441;
  --maxw:1280px; --radius:14px;
  --shadow:0 1px 3px rgba(12,42,32,.05),0 8px 24px rgba(12,42,32,.06);
  --shadow-lg:0 4px 12px rgba(12,42,32,.08),0 18px 44px rgba(12,42,32,.12);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.75;font-size:15.5px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}

/* ---------- 顶栏 ---------- */
.topbar{background:var(--ink);color:#CFE3D9;font-size:13px;position:relative;z-index:120}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;min-height:36px;gap:16px;flex-wrap:wrap;padding-top:5px;padding-bottom:5px}
.topbar a{color:#fff;font-weight:600;letter-spacing:.02em}
.topbar span.tb-tag{opacity:.75}
.topbar .tb-right{display:flex;align-items:center;gap:14px;flex-wrap:nowrap}
.topbar .tb-hots{white-space:nowrap}
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header .wrap{display:flex;align-items:center;gap:26px;min-height:76px;padding-top:8px;padding-bottom:8px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand img{height:48px;width:auto}
.brand .b-name{display:flex;flex-direction:column;line-height:1.25}
.brand .b-name b{font-size:17px;letter-spacing:.06em;white-space:nowrap}
.brand .b-name i{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.14em}
.nav{display:flex;flex:1;align-items:center;justify-content:flex-end;flex-wrap:nowrap;gap:7px}
.nav>li{position:relative}
.nav>li>a{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;font-size:14.5px;font-weight:600;line-height:1.3;color:var(--ink2);background:#fff;border:1px solid #DFEBE4;border-radius:10px;box-shadow:0 1px 2px rgba(12,42,32,.045);white-space:nowrap;flex-wrap:nowrap;text-align:left;cursor:pointer;transition:color .18s,background .18s,border-color .18s,box-shadow .18s,transform .18s}
.nav>li>a::after{content:"";display:inline-block;width:0;height:0;border:4px solid transparent;border-top-color:currentColor;margin-top:3px;opacity:.5;transition:transform .25s}
.nav>li:hover>a{color:var(--green-ink);background:#F5FBF0;border-color:#A9D98C;box-shadow:0 6px 16px rgba(88,176,40,.16);transform:translateY(-1px)}
.nav>li.on>a{color:#fff;background:linear-gradient(135deg,#5FBC2C 0%,#3E8F1A 100%);border-color:transparent;box-shadow:0 6px 16px rgba(88,176,40,.3)}
.nav>li.on>a::before{display:none}
.nav>li:hover>a::after{transform:translateY(2px)}
.nav .sub{position:absolute;top:calc(100% + 2px);left:50%;transform:translateX(-50%) translateY(10px);background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-lg);padding:10px;min-width:196px;opacity:0;visibility:hidden;transition:.25s;z-index:130}
.nav>li:hover .sub{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
/* 无下拉的项不显示箭头，避免误导 */
.nav>li:not(:has(.sub))>a::after{display:none}
/* 末项下拉贴右，避免超出视口 */
.nav>li:last-child .sub{left:auto;right:0;transform:translateY(10px)}
.nav>li:last-child:hover .sub{transform:translateY(0)}
.nav .sub a{display:flex;align-items:center;gap:10px;padding:9px 14px;border-radius:8px;font-size:14px;color:var(--ink2);white-space:nowrap;transition:.15s}
.nav .sub a::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--green);flex-shrink:0;opacity:0;transition:.15s}
.nav .sub a:hover{background:var(--green-soft);color:var(--green-ink);padding-left:18px}
.nav .sub a:hover::before{opacity:1}
.header .cta{flex-shrink:0}
.burger{display:none}

/* ---------- 语言切换 ---------- */
.lang{position:relative;flex-shrink:0}
.lang-btn{display:flex;align-items:center;gap:6px;background:none;border:none;color:#CFE3D9;font-size:12.5px;font-weight:600;cursor:pointer;padding:3px 4px;font-family:inherit;letter-spacing:.03em;white-space:nowrap}
.lang-btn:hover{color:#fff}
.lang-btn svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;opacity:.85}
.lang-btn .caret{width:0;height:0;border:3.5px solid transparent;border-top-color:currentColor;opacity:.6;margin-top:3px}
.lang-menu{position:absolute;top:calc(100% + 9px);right:0;background:#fff;border:1px solid var(--line);border-radius:11px;box-shadow:var(--shadow-lg);padding:6px;min-width:148px;opacity:0;visibility:hidden;transform:translateY(-6px);transition:.2s;z-index:140}
.lang.open .lang-menu{opacity:1;visibility:visible;transform:translateY(0)}
.lang-menu a{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:8px 12px;border-radius:7px;font-size:13.5px;font-weight:500;color:var(--ink2);white-space:nowrap;cursor:pointer;letter-spacing:0}
.lang-menu a:hover{background:var(--green-soft);color:var(--green-ink)}
.lang-menu a.on{color:var(--green-ink);font-weight:700;background:var(--green-soft)}
.lang-menu a em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.08em}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:10px;font-weight:700;font-size:15px;letter-spacing:.02em;transition:.25s;cursor:pointer;border:1.5px solid transparent}
.btn-primary{background:linear-gradient(135deg,#67C232,var(--green-ink));color:#fff;box-shadow:0 6px 18px rgba(88,176,40,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(88,176,40,.4)}
.btn-ghost{border-color:rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14)}
.btn-outline{border-color:var(--green);color:var(--green-ink);background:#fff}
.btn-outline:hover{background:var(--green-soft)}
.btn-sm{padding:9px 20px;font-size:14px}

/* ---------- 首屏 ---------- */
.hero{position:relative;color:#fff;overflow:hidden;background:var(--ink)}
.hero .hero-bg{position:absolute;inset:0;background-image:linear-gradient(100deg,rgba(6,32,23,.94) 22%,rgba(9,52,37,.78) 52%,rgba(10,60,42,.42)),url("hero-plant.jpg");background-size:cover;background-position:center}
.hero .hero-deco{position:absolute;right:-120px;top:-140px;width:560px;height:560px;border-radius:50%;border:56px solid rgba(88,176,40,.16)}
.hero .hero-deco2{position:absolute;right:180px;bottom:-190px;width:380px;height:380px;border-radius:50%;border:1.5px solid rgba(255,255,255,.16)}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;padding-top:92px;padding-bottom:96px}
.hero-badge{display:inline-flex;align-items:center;gap:9px;border:1px solid rgba(255,255,255,.32);background:rgba(255,255,255,.1);backdrop-filter:blur(4px);border-radius:99px;padding:7px 18px;font-size:13.5px;letter-spacing:.06em;margin-bottom:26px}
.hero-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:#7ED957;box-shadow:0 0 10px #7ED957}
.hero h1{font-size:46px;line-height:1.28;font-weight:800;letter-spacing:.03em;white-space:pre-line;margin-bottom:22px}
.hero h1 em{font-style:normal;color:#8BD95A}
.hero p.sub{font-size:16.5px;color:#C9DCCF;max-width:520px;margin-bottom:34px}
.hero .acts{display:flex;gap:14px;flex-wrap:wrap}
.hero-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);backdrop-filter:blur(10px);border-radius:18px;padding:28px 30px;display:grid;grid-template-columns:1fr 1fr;gap:22px 26px}
.hero-card .hc b{display:block;font-size:32px;font-weight:800;letter-spacing:.02em}
.hero-card .hc b small{font-size:15px;font-weight:600;margin-left:3px;color:#9FCE83}
.hero-card .hc i{font-style:normal;font-size:13px;color:#B9D2C1;letter-spacing:.08em}
.hc-line{grid-column:1/-1;height:1px;background:linear-gradient(90deg,rgba(123,211,90,.6),transparent)}
.hc-note{grid-column:1/-1;font-size:13.5px;color:#AECDB8;line-height:1.7}
/* 信任条 */
.trustline{background:var(--ink);color:#D7E8DD;font-size:13.5px}
.trustline .wrap{display:flex;justify-content:space-between;align-items:center;min-height:58px;gap:20px;flex-wrap:wrap}
.trustline em{font-style:normal;color:#8BD95A;font-weight:700;margin-right:4px}

/* ---------- 区块通用 ---------- */
.sect{padding:88px 0}
.sect.tint{background:linear-gradient(180deg,#EEF6F1,#F6FAF8)}
.sect-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:48px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:700;letter-spacing:.22em;color:var(--green-ink);margin-bottom:14px}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--green)}
.sect-head h2{font-size:34px;font-weight:800;letter-spacing:.02em;line-height:1.3}
.sect-head h2 small{display:block;font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.28em;margin-top:10px}
.sect-head .lead{max-width:560px;color:var(--ink2);font-size:15.5px}
.more-link{flex-shrink:0;display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:700;color:var(--green-ink);border:1.5px solid var(--green);border-radius:99px;padding:9px 22px;transition:.25s;background:#fff}
.more-link:hover{background:var(--green);color:#fff;transform:translateX(3px)}

/* ---------- 关于 ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.about-visual{position:relative}
.about-visual img{border-radius:18px;box-shadow:var(--shadow-lg);aspect-ratio:4/3;object-fit:cover;width:100%}
.about-visual .since{position:absolute;left:-20px;bottom:-24px;background:#fff;border-radius:16px;box-shadow:var(--shadow-lg);padding:20px 26px;display:flex;align-items:center;gap:16px;border-left:5px solid var(--green)}
.about-visual .since b{font-size:34px;font-weight:800;color:var(--green-ink)}
.about-visual .since i{font-style:normal;font-size:13px;color:var(--muted);line-height:1.5}
.about-body p{color:var(--ink2);margin-bottom:16px;text-align:justify}
.about-body p b{color:var(--ink)}
.about-motto{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0 28px}
.about-motto span{background:var(--green-soft);color:var(--green-ink);border:1px solid #CFE8BE;font-weight:700;font-size:14px;padding:7px 16px;border-radius:99px}

/* ---------- 业务 4 卡 ---------- */
.biz-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.biz-card{position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:3/4;box-shadow:var(--shadow);background:var(--ink)}
.biz-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s ease;opacity:.88}
.biz-card:hover img{transform:scale(1.07)}
.biz-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,28,20,.05) 30%,rgba(6,28,20,.88))}
.biz-card .bc-body{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;justify-content:flex-end;padding:26px 24px;color:#fff}
.biz-card .bc-num{position:absolute;top:18px;right:20px;z-index:2;font-size:40px;font-weight:800;color:rgba(255,255,255,.28);font-style:italic;line-height:1}
.biz-card h3{font-size:20px;font-weight:800;margin-bottom:10px;letter-spacing:.04em}
.biz-card p{font-size:13.5px;color:#CFE0D4;line-height:1.7;max-height:0;overflow:hidden;opacity:0;transition:.45s}
.biz-card:hover p{max-height:120px;opacity:1;margin-bottom:14px}
.biz-card .bc-go{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:#8BD95A}
.biz-card .bc-go::after{content:"→";transition:.25s}
.biz-card:hover .bc-go::after{transform:translateX(4px)}

/* ---------- 五大板块 ---------- */
.sectors{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.sector{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 22px 26px;position:relative;overflow:hidden;transition:.3s;cursor:pointer}
.sector::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--green),var(--blue));transform:scaleX(0);transform-origin:left;transition:.35s}
.sector:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.sector:hover::before{transform:scaleX(1)}
.sector .ic{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:18px;background:var(--green-soft)}
.sector .ic svg{width:26px;height:26px}
.sector:nth-child(even) .ic{background:var(--blue-soft)}
.sector h3{font-size:18px;font-weight:800;margin-bottom:10px}
.sector .s-sub{font-size:12.5px;color:var(--muted);line-height:1.8}

/* ---------- 产品网格 ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.3s;display:flex;flex-direction:column}
.prod-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-5px)}
.prod-card .p-img{position:relative;overflow:hidden;aspect-ratio:4/3;background:#F0F5F2}
.prod-card .p-img img{width:100%;height:100%;object-fit:cover;transition:transform .55s}
.prod-card:hover .p-img img{transform:scale(1.06)}
.prod-card .p-tag{position:absolute;left:14px;top:14px;background:rgba(12,42,32,.82);color:#fff;font-size:12px;font-weight:600;padding:4px 12px;border-radius:99px;backdrop-filter:blur(4px)}
.prod-card .p-body{padding:22px 24px 24px;flex:1;display:flex;flex-direction:column}
.prod-card h3{font-size:17.5px;font-weight:800;margin-bottom:8px}
.prod-card h3 a:hover{color:var(--green-ink)}
.prod-card p{font-size:13.5px;color:var(--muted);flex:1}

/* ---------- 新闻 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-col{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.3s}
.news-col:hover{box-shadow:var(--shadow)}
.news-col .nc-head{display:flex;justify-content:space-between;align-items:center;padding-bottom:16px;margin-bottom:8px;border-bottom:2px solid var(--ink)}
.news-col .nc-head h3{font-size:18px;font-weight:800}
.news-col .nc-head small{font-size:12px;color:var(--muted);letter-spacing:.16em;font-weight:600}
.news-item{display:flex;gap:14px;padding:13px 0;border-bottom:1px dashed var(--line);align-items:baseline}
.news-item:last-child{border-bottom:none}
.news-item time{flex-shrink:0;font-size:12px;color:var(--muted);font-weight:600;font-variant-numeric:tabular-nums}
.news-item .ni-t{flex:1;min-width:0;font-size:14px;color:var(--ink2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;transition:.15s}
.news-item:hover .ni-t{color:var(--green-ink)}

/* ---------- CTA / 联系 ---------- */
.cta-band{background:linear-gradient(115deg,#0C2A20 0%,#123B2C 55%,#17503A);color:#fff;border-radius:22px;padding:52px 56px;display:grid;grid-template-columns:1fr auto;gap:44px;align-items:center;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;right:-90px;top:-110px;width:320px;height:320px;border-radius:50%;border:38px solid rgba(88,176,40,.18)}
.cta-band h2{font-size:29px;font-weight:800;margin-bottom:10px}
.cta-band p{color:#B9D2C1;font-size:15px}
.cta-band .qr{background:#fff;border-radius:14px;padding:14px;display:flex;flex-direction:column;align-items:center;gap:9px;position:relative;z-index:2}
.cta-band .qr img{width:132px;height:132px;border-radius:8px}
.cta-band .qr i{font-style:normal;font-size:12px;color:var(--ink2);font-weight:600}
.cta-phone{display:flex;flex-direction:column;gap:6px;margin-top:20px}
.cta-phone b{font-size:30px;font-weight:800;letter-spacing:.04em;color:#8BD95A;font-variant-numeric:tabular-nums}
.cta-phone i{font-style:normal;font-size:13px;color:#9FBCAA}

/* ---------- 页脚 ---------- */
footer.site{background:var(--ink);color:#9DB8AB;font-size:14px;margin-top:0}
/* 页脚仅保留版权条 */
.f-bottom{padding:22px 0;display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:12.5px;color:#7E9C8D;flex-wrap:wrap}
.f-bottom .fb-right{display:flex;align-items:center;gap:18px}
.f-bottom .fb-admin{color:#5F7A6C;transition:color .2s,opacity .2s}
.f-bottom .fb-admin:hover{color:#8BD95A}

/* ---------- 子页 banner ---------- */
.page-hero{background:linear-gradient(105deg,#0C2A20 30%,#14523B),url("eq-ro2.jpg") center/cover;color:#fff;padding:74px 0 66px;position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;right:-60px;bottom:-120px;width:300px;height:300px;border-radius:50%;border:34px solid rgba(88,176,40,.16)}
.page-hero .crumb{font-size:13px;color:#9FBCAA;margin-bottom:14px;letter-spacing:.08em}
.page-hero .crumb a:hover{color:#8BD95A}
.page-hero h1{font-size:38px;font-weight:800;letter-spacing:.04em;margin-bottom:12px}
.page-hero p{color:#B9D2C1;max-width:640px}

/* ---------- 分类卡 / 产品名 chips ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:flex;gap:20px;align-items:flex-start;transition:.3s;position:relative;overflow:hidden}
.cat-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.cat-card .cc-ic{flex-shrink:0;width:56px;height:56px;border-radius:14px;background:var(--green-soft);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;color:var(--green-ink)}
.cat-card:nth-child(even) .cc-ic{background:var(--blue-soft);color:var(--blue)}
.cat-card h3{font-size:17px;font-weight:800;margin-bottom:6px}
.cat-card p{font-size:13.5px;color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:12px}
.chip{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 20px;font-size:14.5px;font-weight:600;color:var(--ink2);display:flex;align-items:center;gap:10px;transition:.25s}
.chip::before{content:"";width:8px;height:8px;border-radius:2.5px;background:var(--green);flex-shrink:0}
.chip:hover{border-color:var(--green);color:var(--green-ink);transform:translateY(-2px);box-shadow:var(--shadow)}
.chip-blocks{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}

/* ---------- 联系页 ---------- */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:start}
.c-item{display:flex;gap:20px;padding:26px 0;border-bottom:1px solid var(--line)}
.c-item:first-child{padding-top:0}
.c-item .ci-ic{flex-shrink:0;width:52px;height:52px;border-radius:13px;background:var(--green-soft);display:flex;align-items:center;justify-content:center}
.c-item .ci-ic svg{width:24px;height:24px}
.c-item h3{font-size:15px;color:var(--muted);font-weight:600;margin-bottom:5px;letter-spacing:.06em}
.c-item p{font-size:19px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums}
.c-item p small{font-size:14px;color:var(--ink2);font-weight:500}
.contact-card{background:linear-gradient(160deg,#0F3526,#17503A);border-radius:20px;padding:40px;color:#fff;position:relative;overflow:hidden}
.contact-card::before{content:"";position:absolute;right:-70px;top:-90px;width:230px;height:230px;border-radius:50%;border:26px solid rgba(88,176,40,.2)}
.contact-card img{width:180px;height:180px;border-radius:12px;margin:0 auto;background:#fff;padding:10px}
.contact-card .cc-note{text-align:center;margin-top:16px;font-size:13.5px;color:#B9D2C1}
.contact-card .cc-tel{text-align:center;margin-top:20px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14)}
.contact-card .cc-tel b{font-size:26px;color:#8BD95A;letter-spacing:.03em}

/* ---------- 文章 ---------- */
.article-wrap{max-width:860px;margin:0 auto}
.article-wrap .art-head{padding-bottom:26px;margin-bottom:34px;border-bottom:1px solid var(--line)}
.article-wrap h1{font-size:32px;font-weight:800;line-height:1.4;margin-bottom:16px}
.art-meta{display:flex;gap:22px;font-size:13.5px;color:var(--muted)}
.art-content{font-size:16px;line-height:2;color:var(--ink2)}
.art-content p{margin-bottom:18px}
.art-content h3{font-size:21px;color:var(--ink);margin:32px 0 14px;padding-left:14px;border-left:4px solid var(--green)}
.art-content ul{margin:0 0 18px 4px}
.art-content li{padding-left:22px;position:relative;margin-bottom:9px}
.art-content li::before{content:"";position:absolute;left:2px;top:12px;width:7px;height:7px;border-radius:2px;background:var(--green)}
.empty-tip{text-align:center;color:var(--muted);padding:80px 0}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto}
details.faq{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:14px;overflow:hidden;transition:.25s}
details.faq[open]{border-color:var(--green);box-shadow:var(--shadow)}
details.faq summary{cursor:pointer;list-style:none;padding:20px 26px;font-weight:700;font-size:16px;display:flex;justify-content:space-between;align-items:center;gap:16px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-size:24px;color:var(--green);font-weight:400;transition:.25s;flex-shrink:0}
details.faq[open] summary::after{transform:rotate(45deg)}
details.faq .a{padding:0 26px 22px;color:var(--ink2);font-size:14.5px}

/* ---------- 数据块（关于页） ---------- */
.stat-band{background:linear-gradient(115deg,#0C2A20,#155040);border-radius:22px;padding:44px 48px;display:grid;grid-template-columns:repeat(4,1fr);gap:28px;color:#fff}
.stat-band .sb b{display:block;font-size:36px;font-weight:800;color:#8BD95A}
.stat-band .sb b small{font-size:15px;font-weight:600;margin-left:3px}
.stat-band .sb i{font-style:normal;font-size:13.5px;color:#AECDB8;letter-spacing:.06em}

/* ---------- 动画 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.on{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- 响应式 ---------- */
@media(max-width:1240px){
  .header .wrap{gap:18px}
  .nav{gap:5px}
  .nav>li>a{font-size:14px;padding:8px 11px}
}
@media(max-width:1080px){
  .header .wrap{gap:14px}
  .nav{gap:4px}
  .nav>li>a{font-size:13.5px;padding:7px 9px;border-radius:9px}
}
/* 单排放不下时收起为汉堡菜单 */
@media(max-width:960px){
  .nav{display:none;position:fixed;inset:68px 0 auto 0;background:#fff;flex-direction:column;justify-content:flex-start;padding:16px 20px 28px;box-shadow:var(--shadow-lg);border-top:1px solid var(--line);flex-wrap:nowrap;gap:0;max-height:calc(100vh - 68px);overflow-y:auto}
  .nav.open{display:flex}
  .nav>li:hover>a{background:transparent;box-shadow:none;transform:none}
  .nav>li.on>a{background:var(--green-soft);color:var(--green-ink);box-shadow:none}
  .nav>li{width:100%}
  .nav>li>a{padding:13px 6px;width:100%;justify-content:space-between;font-size:15px;background:transparent;border:none;border-bottom:1px solid var(--line);border-radius:0;box-shadow:none;transform:none}
  .nav .sub{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;padding:0 0 0 18px;min-width:0}
  .burger{display:flex;flex-direction:column;gap:5px;padding:8px;cursor:pointer}
  .burger i{display:block;width:22px;height:2.5px;background:var(--ink);border-radius:2px;transition:.3s}
  .header .wrap{min-height:68px;gap:12px}
  .header .wrap .brand img{height:38px}
}
@media(max-width:1120px){
  .sectors{grid-template-columns:repeat(3,1fr)}
  .biz-grid{grid-template-columns:repeat(2,1fr)}
  .prod-grid,.news-grid,.cat-grid{grid-template-columns:repeat(2,1fr)}
  .chip-blocks{grid-template-columns:repeat(3,1fr)}
  .hero .wrap{grid-template-columns:1fr;padding-top:64px;padding-bottom:70px}
  .hero-card{max-width:640px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .hero h1{font-size:31px}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:44px}
  .about-visual{order:-1}
  .prod-grid,.news-grid,.cat-grid,.biz-grid,.sectors{grid-template-columns:1fr}
  .chip-blocks{grid-template-columns:repeat(2,1fr)}
  .sect{padding:60px 0}
  .sect-head{flex-direction:column;align-items:flex-start}
  .sect-head h2{font-size:26px}
  .cta-band{grid-template-columns:1fr;padding:38px 28px}
  .stat-band{grid-template-columns:1fr 1fr;padding:32px 26px}
  .topbar .wrap span.tb-tag{display:none}
  .topbar .wrap{justify-content:center}
}

/* 锚点跳转留出吸顶导航高度 */
.prod-card[id],[id^="daily"]{scroll-margin-top:110px}