/* =====================================================
   周村区万发生物质颗粒厂 · 官网样式
   视觉方向：Apple.com.cn 式极简排版
   黑白大字 · 全宽通栏 · 磨砂导航 · 灰底圆角大卡片
   ===================================================== */

:root{
  --ink:#1d1d1f;
  --ink-2:#6e6e73;
  --ink-3:#86868b;
  --blue:#0071e3;
  --blue-deep:#000000;
  --tint:#f5f5f7;
  --tint-2:#ffffff;
  --gray-bg:#f5f5f7;
  --white:#ffffff;
  --border:#d2d2d7;
  --orange:#ff6b1a;
  --radius:28px;
  --radius-sm:18px;
  --radius-lg:28px;
  --shadow-sm:none;
  --shadow-md:none;
  --shadow-lg:none;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue","Microsoft YaHei",sans-serif;
  --font-num:"SF Pro Display",-apple-system,"Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-cn);color:var(--ink);background:var(--white);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;letter-spacing:-.01em}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;border:none;background:none;cursor:pointer}
.icon{width:1em;height:1em;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}

.wrap{max-width:1100px;margin:0 auto;padding:0 24px}
.wrap-wide{max-width:1440px;margin:0 auto;padding:0 24px}

/* ===== 按钮（胶囊） ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:980px;font-size:15px;font-weight:500;transition:.25s ease;white-space:nowrap;letter-spacing:0}
.btn--lg{padding:16px 36px;font-size:17px}
.btn--primary{background:var(--blue);color:#fff}
.btn--primary:hover{background:#0077ed}
.btn--outline{border:1px solid var(--border);color:var(--ink);background:transparent}
.btn--outline:hover{border-color:var(--ink)}
.btn--white{background:var(--blue);color:#fff}
.btn--white:hover{background:#0077ed}
.btn--ghost-w{border:1.5px solid rgba(255,255,255,.6);color:#fff}
.btn--ghost-w:hover{background:rgba(255,255,255,.1)}

/* ===== 页头（磨砂玻璃导航） ===== */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.78);-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid rgba(0,0,0,.08);box-shadow:none}
.navbar-inner{max-width:1100px;margin:0 auto;padding:0 24px;height:56px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px}
.logo-mark{width:30px;height:30px;flex:none}
.logo-mark svg{width:100%;height:100%;display:block}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:0}
.logo-sub{font-family:var(--font-num);font-size:8px;font-weight:600;letter-spacing:1.4px;color:var(--ink-3);margin-top:2px}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{display:block;padding:7px 13px;border-radius:0;font-size:13px;font-weight:400;color:rgba(29,29,31,.8);transition:.18s;background:none}
.nav-menu a:hover{color:var(--ink)}
.nav-menu a.is-active{color:var(--blue);background:none}
.nav-right{display:flex;align-items:center;gap:16px}
.nav-phone{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-num);font-weight:600;font-size:13px;color:var(--ink)}
.nav-phone .icon{color:var(--blue);font-size:15px}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;color:var(--ink);align-items:center;justify-content:center}
.nav-toggle .icon{font-size:22px}
.nav-toggle .icon-close{display:none}
.nav-toggle[aria-expanded="true"] .icon-menu{display:none}
.nav-toggle[aria-expanded="true"] .icon-close{display:block}

/* ===== Hero（首页 · 黑底大字 + 全宽图） ===== */
.hero{background:#000;padding:120px 0 0;text-align:center;color:#fff}
.hero-kicker{display:inline-flex;align-items:center;gap:10px;font-size:14px;font-weight:600;color:#86868b;letter-spacing:.08em;text-transform:uppercase}
.hero-kicker i{width:7px;height:7px;border-radius:50%;background:var(--orange)}
.hero h1{font-size:clamp(40px,6.4vw,76px);line-height:1.12;font-weight:700;margin-top:22px;color:#fff;letter-spacing:-.02em}
.hero-sub{max-width:680px;margin:24px auto 0;font-size:19px;line-height:1.6;color:#a1a1a6}
.hero-cta{display:flex;gap:22px;justify-content:center;margin-top:38px;flex-wrap:wrap}
.hero-visual{margin-top:76px}
.hero-visual img{width:100%;height:clamp(300px,58vh,640px);object-fit:cover}

/* ===== 数据条（黑底大数字） ===== */
.stats-band{background:#000;padding:90px 0}
.stats-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat{text-align:center}
.stat strong{display:block;font-family:var(--font-num);font-weight:700;font-size:clamp(38px,4.6vw,60px);line-height:1.05;color:#fff;letter-spacing:-.02em}
.stat span{display:block;margin-top:10px;font-size:14px;color:#86868b}

/* ===== 区块通用 ===== */
.sec{padding:110px 0}
.sec--white{background:#fff}
.sec--gray{background:var(--gray-bg)}
.sec--tint{background:#fff}
.sec--dark{background:#000;color:#a1a1a6}
.sec--dark h2,.sec--dark h3{color:#fff}
.sec-head{max-width:720px;margin:0 auto;text-align:center}
.sec-head--center{margin:0 auto;text-align:center}
.sec-eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--blue)}
.sec-eyebrow .bar{display:none}
.sec--dark .sec-eyebrow{color:#2997ff}
.sec--dark .sec-eyebrow .bar{display:none}
.sec-title{font-size:clamp(30px,4.2vw,52px);line-height:1.16;font-weight:700;color:var(--ink);margin-top:16px;letter-spacing:-.02em}
.sec--dark .sec-title{color:#fff}
.sec-desc{margin-top:18px;font-size:17px;line-height:1.65;color:var(--ink-2)}
.sec--dark .sec-desc{color:#a1a1a6}

/* ===== Bento 业务区 ===== */
.bento{display:grid;grid-template-columns:1.05fr 1fr;gap:24px;margin-top:64px}
.bento-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:none;border:none}
.bento-card__media{height:400px}
.bento-card__media img{width:100%;height:100%;object-fit:cover}
.bento-card__body{padding:44px 40px;display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.bento-card h3{font-size:28px;font-weight:700;color:var(--ink);letter-spacing:-.015em}
.bento-card p{font-size:16px;line-height:1.65;color:var(--ink-2)}
.card-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:500;color:var(--blue)}
.card-link .icon{font-size:15px}
.card-link:hover{gap:12px}
.bento-col{display:flex;flex-direction:column;gap:24px}
.bento-text{background:transparent;border-radius:var(--radius);padding:0 8px;display:flex;flex-direction:column;gap:12px;justify-content:center}
.bento-text h3{font-size:28px;font-weight:700;color:var(--ink);letter-spacing:-.015em}
.bento-text p{font-size:16px;line-height:1.65;color:var(--ink-2)}
.bento-imgs{display:grid;grid-template-columns:1fr 1fr;gap:24px;flex:1}
.bento-imgs img{width:100%;height:100%;min-height:220px;object-fit:cover;border-radius:var(--radius)}

/* ===== 产品分栏（极简列表 + 大图） ===== */
.psplit{display:grid;grid-template-columns:430px 1fr;gap:72px;margin-top:64px;align-items:start}
.plist{display:flex;flex-direction:column}
.pitem{display:flex;align-items:flex-start;gap:20px;padding:26px 4px;border-bottom:1px solid var(--border);border-radius:0;box-shadow:none;background:none;transition:.2s}
.pitem:first-child{border-top:1px solid var(--border)}
.pitem:hover{transform:none}
.pitem:hover h3{color:var(--blue)}
.pitem__num{font-family:var(--font-num);font-weight:600;font-size:14px;color:var(--ink-3);padding-top:4px}
.pitem__txt{flex:1}
.pitem__txt h3{font-size:22px;font-weight:700;color:var(--ink);transition:.18s;letter-spacing:-.015em}
.pitem__txt p{margin-top:6px;font-size:15px;color:var(--ink-2)}
.ppanel{display:flex;flex-direction:column;gap:24px}
.ppanel__img{border-radius:var(--radius);overflow:hidden}
.ppanel__img img{width:100%;height:400px;object-fit:cover}
.ptags{display:flex;gap:10px;flex-wrap:wrap}
.tag{display:inline-block;padding:7px 16px;border-radius:980px;background:#e8e8ed;color:var(--ink);font-size:13px;font-weight:500}
.ppanel__note{font-size:15px;line-height:1.75;color:var(--ink-2)}

/* ===== 流程 ===== */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:64px}
.flow-card{background:var(--gray-bg);border:none;border-radius:var(--radius);padding:40px 32px;display:flex;flex-direction:column;gap:14px}
.flow-card__num{font-family:var(--font-num);font-weight:700;font-size:15px;color:var(--blue)}
.flow-card h3{font-size:20px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.flow-card p{font-size:15px;line-height:1.65;color:var(--ink-2)}

/* ===== 优势（黑底） ===== */
.wgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:64px}
.wcard{background:#1d1d1f;border:none;border-radius:var(--radius);padding:40px 32px;display:flex;flex-direction:column;gap:14px}
.wcard .icon{font-size:28px;color:#2997ff}
.wcard h3{font-size:20px;font-weight:700;color:#fff;letter-spacing:-.01em}
.wcard p{font-size:15px;line-height:1.65;color:#a1a1a6}

/* ===== FAQ（极简分隔线） ===== */
.faq-split{display:grid;grid-template-columns:380px 1fr;gap:80px;align-items:start}
.faq-aside{display:flex;flex-direction:column;gap:18px}
.faq-aside h2{font-size:clamp(28px,3.4vw,44px);line-height:1.18;font-weight:700;color:var(--ink);letter-spacing:-.02em}
.faq-aside p{font-size:16px;line-height:1.7;color:var(--ink-2)}
.faq-phone{background:var(--gray-bg);border-radius:var(--radius-sm);padding:28px;display:flex;flex-direction:column;gap:8px;margin-top:6px}
.faq-phone strong{font-size:16px;color:var(--ink)}
.faq-phone span{font-size:14px;line-height:1.65;color:var(--ink-2)}
.faq-list{display:flex;flex-direction:column}
.faq-item{background:none;border:none;border-radius:0;overflow:visible;transition:.2s;border-bottom:1px solid var(--border)}
.faq-item:first-child{border-top:1px solid var(--border)}
.faq-item[open]{background:none;box-shadow:none}
.faq-q{display:flex;align-items:center;gap:14px;padding:28px 4px;cursor:pointer;font-size:20px;font-weight:600;color:var(--ink);list-style:none;letter-spacing:-.01em}
.faq-q::-webkit-details-marker{display:none}
.faq-q .plus{margin-left:auto;color:var(--ink-3);font-size:20px;transition:.25s}
.faq-item[open] .plus{transform:rotate(45deg)}
.faq-a{padding:0 4px 30px;font-size:16px;line-height:1.75;color:var(--ink-2);max-width:640px}

/* ===== CTA ===== */
.cta-band{background:#fff;padding:0 0 110px}
.cta-box{display:flex;align-items:center;justify-content:space-between;gap:36px;padding:64px 64px;border-radius:var(--radius);background:#000;color:#fff}
.cta-box h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.02em}
.cta-box p{margin-top:12px;font-size:16px;line-height:1.65;color:#a1a1a6}
.cta-box .btn{flex:none}

/* ===== 内页 Banner（白底大字） ===== */
.page-banner{background:#fff;padding:100px 0 20px;color:var(--ink);text-align:center}
.page-banner .eyebrow{font-size:13px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--blue)}
.page-banner h1{margin-top:14px;font-size:clamp(36px,5.4vw,64px);line-height:1.12;font-weight:700;letter-spacing:-.02em}
.page-banner p{margin-top:16px;font-size:18px;color:var(--ink-2);max-width:640px;margin-left:auto;margin-right:auto}

/* ===== 卡片网格（灰底圆角大卡） ===== */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:64px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:64px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:64px}
.card{background:var(--gray-bg);border:none;border-radius:var(--radius);overflow:hidden;box-shadow:none;transition:.28s;display:flex;flex-direction:column}
.card:hover{transform:scale(1.015)}
.card__media{height:340px}
.card__media--sm{height:260px}
.card__media img{width:100%;height:100%;object-fit:cover}
.card__body{padding:40px 36px;display:flex;flex-direction:column;gap:12px;flex:1;align-items:flex-start}
.card__body h3{font-size:24px;font-weight:700;color:var(--ink);letter-spacing:-.015em}
.card--sm h3{font-size:21px}
.card__body p{font-size:15px;line-height:1.65;color:var(--ink-2)}

/* ===== 参数表（极简线表） ===== */
.spec-table{margin-top:64px;background:transparent;border:none;border-radius:0;overflow:visible;box-shadow:none}
.spec-table table{width:100%;border-collapse:collapse;font-size:15px}
.spec-table thead th{background:none;color:var(--ink-3);font-weight:600;text-align:left;padding:14px 16px;white-space:nowrap;border-bottom:1px solid var(--ink);font-size:13px;letter-spacing:.02em}
.spec-table tbody td{padding:22px 16px;color:var(--ink);border-bottom:1px solid var(--border)}
.spec-table tbody tr:nth-child(odd){background:none}
.spec-table tbody tr:nth-child(even){background:none}
.spec-table .num{font-family:var(--font-num);font-weight:600;color:var(--ink)}
.spec-table td:first-child{font-weight:600;color:var(--ink)}

/* ===== 场景行（极简列表） ===== */
.scene-list{display:flex;flex-direction:column;margin-top:64px}
.scene-row{display:flex;align-items:flex-start;gap:28px;padding:36px 4px;background:none;border:none;border-bottom:1px solid var(--border);border-radius:0;transition:.2s}
.scene-row:first-child{border-top:1px solid var(--border)}
.scene-row:hover{border-color:var(--border);background:none;transform:none}
.scene-row__num{font-family:var(--font-num);font-weight:700;font-size:17px;color:var(--blue)}
.scene-row__txt h3{font-size:22px;font-weight:700;color:var(--ink);letter-spacing:-.015em}
.scene-row__txt p{margin-top:8px;font-size:16px;color:var(--ink-2);max-width:720px}

/* ===== 联系页 ===== */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.contact-card{background:var(--gray-bg);border:none;border-radius:var(--radius);padding:44px 36px;display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.contact-card .icon{font-size:26px;color:var(--blue)}
.contact-card__label{font-size:14px;color:var(--ink-2)}
.contact-card__value{font-family:var(--font-num);font-size:30px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.contact-card__value--cn{font-family:var(--font-cn);font-size:20px;line-height:1.5;font-weight:700}
.contact-card p{font-size:14px;line-height:1.65;color:var(--ink-2)}
.contact-box{display:grid;grid-template-columns:1.1fr 1fr;gap:24px;border:none;border-radius:var(--radius);overflow:visible;background:none}
.contact-box__left{background:#000;color:#a1a1a6;padding:64px 56px;border-radius:var(--radius)}
.contact-box__left h2{font-size:clamp(26px,3vw,38px);line-height:1.2;font-weight:700;color:#fff;margin-top:16px;letter-spacing:-.02em}
.contact-box__left>p{margin-top:14px;font-size:16px;line-height:1.7}
.crow{display:flex;align-items:center;gap:12px;margin-top:16px;font-size:16px;color:#d2d2d7}
.crow .icon{color:#2997ff;font-size:19px}
.contact-box__right{background:var(--gray-bg);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:16px;text-align:center;border-radius:var(--radius);overflow:hidden}
.contact-box__right img{width:100%;height:100%;min-height:280px;object-fit:cover;border-radius:var(--radius-sm)}
.contact-box__right .icon{font-size:40px;color:var(--blue)}
.contact-box__right strong{font-size:17px;color:var(--ink)}
.contact-box__right span{font-size:13px;line-height:1.7;color:var(--ink-2)}

/* ===== 页脚（浅灰极简） ===== */
.site-footer{background:var(--gray-bg);color:var(--ink-2);padding:72px 0 40px;border-top:1px solid var(--border)}
.footer-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px}
.footer-brand p{margin-top:20px;font-size:13px;line-height:1.75;max-width:360px}
.footer-contacts{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.footer-contacts li{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--ink)}
.footer-contacts .icon{color:var(--ink-2);font-size:15px}
.footer-col h3{font-size:13px;font-weight:600;color:var(--ink)}
.footer-col ul{margin-top:14px;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13px;color:var(--ink-2);transition:.18s}
.footer-col a:hover{color:var(--ink);text-decoration:underline}
.footer-divider{height:1px;background:var(--border);margin:44px 0 0}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:22px;font-size:12px;color:var(--ink-3);flex-wrap:wrap}
.footer-bottom .sep{margin:0 10px;color:var(--border)}
.footer-bottom .icp{color:var(--ink-2)}
.footer-bottom .icp:hover{text-decoration:underline}

/* ===== 浮动按钮 ===== */
.float-bar{position:fixed;right:22px;bottom:26px;z-index:50;display:flex;flex-direction:column;gap:12px}
.float-btn{width:48px;height:48px;border-radius:50%;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px -8px rgba(0,0,0,.4);transition:.2s}
.float-btn .icon{font-size:20px}
.float-btn:hover{transform:translateY(-3px)}
.float-btn--top{background:#fff;color:var(--ink);border:1px solid var(--border);box-shadow:0 8px 24px -8px rgba(0,0,0,.18)}
.float-btn--top.is-hide{opacity:0;pointer-events:none}

/* ===== 数据展示（关于页） ===== */
.intro-split{display:grid;grid-template-columns:1fr 520px;gap:72px;align-items:center}
.intro-body{display:flex;flex-direction:column;gap:18px}
.intro-body p{font-size:17px;line-height:1.75;color:var(--ink-2)}
.feature-line{display:flex;align-items:center;gap:10px;font-size:16px;color:var(--ink)}
.feature-line .icon{color:var(--blue);font-size:19px}
.intro-media{border-radius:var(--radius);overflow:hidden;box-shadow:none}
.intro-media img{width:100%;height:460px;object-fit:cover}

/* ===== 揭示动画 ===== */
[data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
[data-reveal].is-in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  [data-reveal]{opacity:1;transform:none;transition:none}
  *{scroll-behavior:auto !important}
}

/* ===== 响应式 ===== */
@media (max-width:1080px){
  .nav-phone{display:none}
  .footer-main{grid-template-columns:1fr 1fr;gap:40px}
  .psplit{grid-template-columns:1fr;gap:40px}
  .intro-split{grid-template-columns:1fr;gap:40px}
  .bento{grid-template-columns:1fr}
  .contact-box{grid-template-columns:1fr}
  .contact-box__right{min-height:240px}
  .wgrid,.flow,.grid-4,.stats-inner{grid-template-columns:repeat(2,1fr)}
  .grid-3,.contact-grid{grid-template-columns:repeat(2,1fr)}
  .footer-main{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .nav-menu{position:absolute;top:56px;left:0;right:0;background:rgba(255,255,255,.96);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);flex-direction:column;align-items:stretch;gap:2px;padding:12px 20px 20px;display:none;border-bottom:1px solid var(--border)}
  .nav-menu.is-open{display:flex}
  .nav-menu a{padding:13px 14px;font-size:17px}
  .nav-toggle{display:inline-flex}
  .nav-right>.btn{display:none}
  .hero{padding:80px 0 0}
  .hero-cta .btn{width:100%}
  .sec{padding:72px 0}
  .stats-band{padding:64px 0}
  .stats-inner{grid-template-columns:repeat(2,1fr);gap:28px}
  .flow,.wgrid,.grid-2,.grid-3,.grid-4,.contact-grid{grid-template-columns:1fr}
  .faq-split{grid-template-columns:1fr;gap:36px}
  .cta-box{flex-direction:column;align-items:flex-start;padding:40px 28px}
  .cta-box .btn{width:100%}
  .footer-main{grid-template-columns:1fr;gap:34px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .intro-media img{height:280px}
  .bento-card__media{height:240px}
  .ppanel__img img{height:240px}
  .scene-row{padding:26px 0}
  .spec-table thead th,.spec-table tbody td{padding:12px 10px}
  .spec-table{display:block;overflow-x:auto}
  .card__media{height:260px}
  .card__media--sm{height:210px}
  .faq-q{font-size:17px}
  .page-banner{padding:72px 0 10px}
}