/* ===== 济宁锐志德工程机械 — 工业力量感视觉系统 =====
   配色：炭黑钢灰 + 熔岩橙；风格：厚重、金属质感、大气
   类名沿用既有契约，仅重做视觉与排版 */

:root{
  /* 主色：熔岩橙 */
  --orange:#E25822;
  --orange-dark:#B8431A;
  --orange-soft:rgba(226,88,34,.12);
  /* 钢灰阶（深→浅） */
  --steel-900:#14181D;
  --steel-800:#1C222A;
  --steel-700:#262E38;
  --steel-600:#39434F;
  --steel-500:#5B6770;
  --steel-400:#8893A0;
  --steel-300:#B6C0CB;
  /* 浅背景 */
  --mist:#F4F6F8;
  --mist-2:#EAEEF2;
  --white:#ffffff;
  --ink:#1B2128;
  --muted:#5b6770;
  --line:#E3E8ED;
  --radius:14px;
  --radius-sm:10px;
  --pill:999px;
  --shadow:0 8px 24px rgba(20,24,29,.08);
  --shadow-lg:0 18px 48px rgba(20,24,29,.16);
  --tr:.22s ease;
  --maxw:1280px;
  --header-h:66px;
  --topbar-h:40px;
  --whatsapp:#25D366;
  --facebook:#1877F2;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
html,body{overflow-x:hidden}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--white);line-height:1.7;font-size:15px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{line-height:1.18;font-weight:800;color:var(--steel-900);letter-spacing:.3px}
/* 内联图标尺寸类（统一 SVG 大小，避免默认尺寸过大） */
.i-mini{width:18px;height:18px;display:block;flex:0 0 auto}
.container{max-width:var(--maxw);margin:0 auto;padding:0 28px}

/* ── 通用区块标题（带工业感装饰） ── */
.section{padding:88px 0}
.section-head{text-align:center;max-width:780px;margin:0 auto 52px;position:relative}
.section-head .eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:3px;
  color:var(--orange);text-transform:uppercase;margin-bottom:14px}
.section-head h2{font-size:38px;margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16px;max-width:620px;margin:0 auto}
.block-title{font-size:26px;margin-bottom:22px;color:var(--steel-900);position:relative;padding-left:14px}
.block-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;border-radius:3px;background:var(--orange)}

/* ── 按钮 ── */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:var(--pill);
  font-weight:700;font-size:15px;cursor:pointer;border:2px solid transparent;transition:var(--tr);line-height:1}
.btn-primary{background:var(--orange);color:#fff;border-color:var(--orange)}
.btn-primary:hover{background:var(--orange-dark);border-color:var(--orange-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(226,88,34,.28)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.1)}
.btn-outline{background:transparent;color:var(--steel-700);border-color:var(--line)}
.btn-outline:hover{border-color:var(--orange);color:var(--orange)}

/* ===== 顶部效用条 ===== */
.topbar-util{background:var(--steel-900);color:var(--steel-300);font-size:13px;border-bottom:1px solid rgba(255,255,255,.06)}
.nav-util-inner{display:flex;align-items:center;justify-content:space-between;height:var(--topbar-h)}
.util-left{display:flex;gap:20px;align-items:center}
.util-loc{display:inline-flex;align-items:center;gap:6px;color:var(--steel-300)}
.util-loc .i-mini{color:var(--orange)}
.util-certs{color:var(--orange);font-weight:600;letter-spacing:.5px}
.util-right{display:flex;gap:16px;align-items:center}
.lang-switch{display:flex;gap:4px}
.lang-switch a{padding:3px 12px;border-radius:var(--pill);color:var(--steel-300);border:1px solid rgba(255,255,255,.16);font-size:12px;font-weight:600;transition:var(--tr)}
.lang-switch a.active{background:var(--orange);color:#fff;border-color:var(--orange)}
.lang-switch a:hover{color:#fff}
.util-wa,.util-phone{display:inline-flex;align-items:center;gap:5px;color:#fff;font-weight:600;font-size:13px;transition:var(--tr)}
.util-wa:hover,.util-phone:hover{color:var(--orange)}
.util-wa .i-mini,.util-phone .i-mini{color:var(--orange)}

/* ===== 主导航 ===== */
.main-nav{background:var(--steel-800);position:sticky;top:0;z-index:50;
  border-top:1px solid rgba(255,255,255,.05);
  box-shadow:0 2px 12px rgba(20,24,29,.25)}
.main-nav.scrolled{background:rgba(28,34,42,.96);backdrop-filter:blur(8px)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.brand{font-size:22px;font-weight:800;color:#fff;letter-spacing:.5px;display:flex;align-items:center;gap:10px}
.brand img{height:34px;width:auto;display:block}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{padding:10px 16px;color:var(--steel-300);border-radius:8px;font-weight:600;font-size:15px;transition:var(--tr);position:relative}
.nav-menu a::after{content:"";position:absolute;left:16px;right:16px;bottom:6px;height:2px;background:var(--orange);
  border-radius:2px;transform:scaleX(0);transition:transform var(--tr)}
.nav-menu a:hover{color:#fff}
.nav-menu a:hover::after,.nav-menu a.active::after{transform:scaleX(1)}
.nav-menu a.active{color:#fff}
.nav-menu a.btn-quote{background:var(--orange);color:#fff;margin-left:10px;padding:11px 22px}
.nav-menu a.btn-quote::after{display:none}
.nav-menu a.btn-quote:hover{background:var(--orange-dark)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;flex-direction:column;gap:5px;padding:8px}
.nav-toggle span{width:24px;height:2px;background:#fff;display:block;border-radius:2px}

/* ===== Hero ===== */
.hero{position:relative;color:#fff;overflow:hidden;min-height:88vh;display:flex;align-items:center}
/* 工业金属背景：深色钢灰 + 强网格纹理 + 斜向高光（调亮，避免死黑） */
.hero-bg{position:absolute;inset:0;z-index:0;
  background:
    linear-gradient(115deg,rgba(20,24,29,.18),rgba(20,24,29,.62) 55%,rgba(20,24,29,.78)),
    repeating-linear-gradient(0deg,rgba(255,255,255,.07) 0 1px,transparent 1px 46px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.07) 0 1px,transparent 1px 46px),
    radial-gradient(1200px 560px at 78% -8%,rgba(226,88,34,.55),transparent),
    linear-gradient(120deg,#26323d 0%,#182028 55%,#242e38 100%)}
.hero::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:linear-gradient(90deg,rgba(20,24,29,.72) 0%,rgba(20,24,29,.42) 45%,rgba(20,24,29,.05) 100%)}
.hero-carousel{position:absolute;inset:0;z-index:1}
.carousel-slide{position:absolute;inset:0;opacity:0;transition:opacity .6s ease}
.carousel-slide.active{opacity:1}
.carousel-slide picture,.carousel-slide img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.hero-inner{position:relative;z-index:3;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:90px 0}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--orange-soft);color:#fff;
  border:1px solid rgba(226,88,34,.6);padding:7px 18px;border-radius:var(--pill);font-size:13px;font-weight:700;margin-bottom:22px}
.hero-badge::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--orange);display:inline-block;box-shadow:0 0 0 4px rgba(226,88,34,.2)}
.hero-text h1{color:#fff;font-size:54px;line-height:1.1;margin-bottom:22px;font-weight:800}
.hero-text h1 .hl{color:var(--orange);display:block}
.hero-sub{color:var(--steel-300);font-size:18px;max-width:540px;margin-bottom:34px;line-height:1.7}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
/* 右侧：实力卡片 + 紧凑电话 CTA */
.hero-side{display:grid;gap:16px;max-width:420px;margin-left:auto}
.hero-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);
  padding:22px 24px;backdrop-filter:blur(6px);box-shadow:0 18px 44px rgba(0,0,0,.22)}
.hero-card .hc-row{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px dashed rgba(255,255,255,.14)}
.hero-card .hc-row:last-child{border-bottom:0}
.hero-card .hc-num{font-size:26px;font-weight:800;color:var(--orange)}
.hero-card .hc-label{color:var(--steel-300);font-size:14px}
.hero-phone{display:flex;align-items:center;gap:16px;background:var(--orange);color:#fff;border-radius:var(--radius);
  padding:18px 22px;box-shadow:0 14px 34px rgba(226,88,34,.35);transition:var(--tr)}
.hero-phone:hover{background:var(--orange-dark);transform:translateY(-3px);box-shadow:0 18px 42px rgba(226,88,34,.45)}
.hero-phone .hp-icon{width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center}
.hero-phone .hp-icon svg{width:22px;height:22px}
.hero-phone .hp-text{display:flex;flex-direction:column;gap:2px}
.hero-phone .hp-label{font-size:13px;opacity:.9;font-weight:600}
.hero-phone .hp-num{font-size:20px;font-weight:800;letter-spacing:.5px}
.carousel-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:4;width:44px;height:44px;border-radius:50%;
  border:none;background:rgba(255,255,255,.85);color:var(--steel-900);font-size:26px;line-height:1;cursor:pointer;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow)}
.carousel-arrow.prev{left:16px}
.carousel-arrow.next{right:16px}
.carousel-dots{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);z-index:4;display:flex;gap:8px}
.carousel-dot{width:10px;height:10px;border-radius:50%;border:none;background:rgba(255,255,255,.5);cursor:pointer;padding:0;transition:width .2s,background .2s}
.carousel-dot.active{background:var(--orange);width:26px;border-radius:5px}

/* ===== 实力数据条 ===== */
.stats-strip{background:var(--steel-900);color:#fff;position:relative}
.stats-strip::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--orange),transparent)}
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:44px 0}
.stat{text-align:center;position:relative}
.stat:not(:last-child)::after{content:"";position:absolute;right:-10px;top:18%;height:64%;width:1px;background:rgba(255,255,255,.1)}
.stat-value{font-size:44px;font-weight:800;color:#fff;line-height:1}
.stat-value small{font-size:22px;color:var(--orange);font-weight:700}
.stat-label{color:var(--steel-400);font-size:14px;margin-top:8px;letter-spacing:1px}

/* ===== 简介区 ===== */
.intro{background:var(--white);padding:80px 0 30px}
.intro-inner{max-width:840px;margin:0 auto;text-align:center}
.intro-inner h2{font-size:32px;margin-bottom:16px}
.intro-inner p{color:var(--muted);font-size:17px;line-height:1.8}

/* ===== 产品（首页 + 列表） ===== */
.products-home{background:var(--mist);padding:40px 0 90px}
.products-page{background:var(--white);padding:30px 0 90px}
.cat-sticky{position:sticky;top:var(--header-h);background:rgba(255,255,255,.97);backdrop-filter:blur(6px);
  display:flex;gap:8px;padding:14px 0;margin-bottom:28px;border-bottom:2px solid var(--line);z-index:20;overflow-x:auto}
.cat-sticky a{padding:9px 20px;border-radius:var(--pill);background:var(--mist);color:var(--steel-600);font-weight:700;white-space:nowrap;transition:var(--tr)}
.cat-sticky a:hover{color:var(--orange)}
.cat-sticky a.active{background:var(--orange);color:#fff}
.group-block{margin-bottom:56px;scroll-margin-top:128px}
.group-title{font-size:24px;margin-bottom:22px;padding-left:14px;border-left:5px solid var(--orange);color:var(--steel-900);display:flex;align-items:baseline;gap:10px}
.group-title .gt-en{font-size:13px;color:var(--steel-400);font-weight:600;letter-spacing:1px}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.product-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:var(--tr);display:flex;flex-direction:column;position:relative}
.product-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--orange);transform:scaleX(0);transform-origin:left;transition:transform var(--tr);z-index:3}
.product-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:rgba(226,88,34,.45)}
.product-card:hover::before{transform:scaleX(1)}
.product-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--mist)}
.product-thumb{width:100%;height:100%;object-fit:cover;transition:transform .55s ease}
.product-card:hover .product-thumb{transform:scale(1.07)}
.product-thumb.placeholder{display:flex;align-items:center;justify-content:center;font-size:40px;font-weight:800;color:rgba(28,34,42,.18);
  background:linear-gradient(135deg,#eef1f4,#e1e7ee)}
.product-go{position:absolute;left:0;right:0;bottom:0;display:flex;align-items:center;justify-content:center;gap:6px;padding:13px;
  background:linear-gradient(0deg,rgba(20,24,29,.82),rgba(20,24,29,0));color:#fff;font-weight:700;font-size:14px;letter-spacing:1px;
  opacity:0;transform:translateY(10px);transition:var(--tr)}
.product-card:hover .product-go{opacity:1;transform:translateY(0)}
.product-body{padding:20px 20px 22px}
.product-body h4{font-size:18px;margin-bottom:8px;color:var(--steel-900);transition:color var(--tr)}
.product-card:hover .product-body h4{color:var(--orange)}
.product-tag{color:var(--muted);font-size:14px;min-height:42px;line-height:1.6}
.model-badge{display:inline-block;margin-top:12px;background:var(--orange-soft);color:var(--orange-dark);font-size:12px;font-weight:700;padding:5px 13px;border-radius:var(--pill)}

/* ===== 优势 ===== */
.advantages{background:var(--white);padding:88px 0}
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.adv-card{background:var(--mist);border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:var(--tr);position:relative;overflow:hidden}
.adv-card::before{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:var(--orange);transform:scaleX(0);transform-origin:left;transition:transform var(--tr)}
.adv-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.adv-card:hover::before{transform:scaleX(1)}
.adv-icon{width:56px;height:56px;color:var(--orange);background:#fff;border:1px solid var(--line);border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.adv-icon svg{width:28px;height:28px}
.adv-card h4{font-size:18px;margin-bottom:10px}
.adv-card p{color:var(--muted);font-size:14px;line-height:1.7}

/* ===== 配套领域（用大机械图标撑起大气感） ===== */
.applications{background:var(--steel-900);color:#fff;padding:88px 0}
.applications .section-head h2{color:#fff}
.applications .section-head .eyebrow{color:var(--orange)}
.applications .section-head p{color:var(--steel-300)}
.app-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.app-card{text-align:center;padding:28px 14px;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);
  background:rgba(255,255,255,.03);transition:var(--tr)}
.app-card:hover{border-color:var(--orange);background:rgba(226,88,34,.08);transform:translateY(-4px)}
.app-icon{width:58px;height:58px;color:var(--orange);margin:0 auto 14px;display:flex;align-items:center;justify-content:center}
.app-icon svg{width:34px;height:34px}
.app-card h4{font-size:16px;margin-bottom:8px;color:#fff}
.app-card p{color:var(--steel-400);font-size:13px;line-height:1.6}

/* ===== CTA 横幅 ===== */
.cta-band{background:linear-gradient(120deg,var(--orange),var(--orange-dark));color:#fff;padding:64px 0;text-align:center;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 14px,transparent 14px 28px)}
.cta-inner{position:relative;z-index:1}
.cta-inner h2{color:#fff;font-size:32px;margin-bottom:12px}
.cta-inner p{color:rgba(255,255,255,.9);margin-bottom:26px;font-size:17px}
.cta-band .btn-primary{background:#fff;color:var(--orange);border-color:#fff}
.cta-band .btn-primary:hover{background:rgba(255,255,255,.9)}

/* ===== 内页 Hero ===== */
.page-hero{background:linear-gradient(120deg,#1f2730,#14181d);color:#fff;padding:66px 0;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(90deg,rgba(255,255,255,.02) 0 1px,transparent 1px 44px),
    radial-gradient(700px 300px at 90% 0%,rgba(226,88,34,.25),transparent)}
.page-hero .container{position:relative;z-index:1}
.page-hero h1{color:#fff;font-size:42px;margin-bottom:12px}
.page-hero p{color:var(--steel-300);font-size:17px;max-width:700px}

/* ===== 详情页 ===== */
.detail-hero{padding:40px 0 14px}
.crumb{font-size:13px;color:var(--muted);margin-bottom:24px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.crumb a:hover{color:var(--orange)}
.crumb .cur{color:var(--steel-900);font-weight:600}
.detail-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:46px;align-items:start}
.detail-media .detail-thumb{width:100%;aspect-ratio:4/3;border-radius:var(--radius);object-fit:cover;background:var(--mist)}
.detail-thumb.placeholder{display:flex;align-items:center;justify-content:center;font-size:62px;font-weight:800;color:rgba(28,34,42,.16);
  background:linear-gradient(135deg,#eef1f4,#e1e7ee)}
.group-chip{display:inline-block;background:var(--orange-soft);color:var(--orange-dark);font-weight:700;font-size:13px;padding:5px 15px;border-radius:var(--pill);margin-bottom:14px}
.detail-info h1{font-size:38px;margin-bottom:12px}
.detail-tag{color:var(--orange);font-weight:600;margin-bottom:14px;font-size:15px}
.detail-summary{color:var(--muted);font-size:16px;margin-bottom:26px;line-height:1.8}
.detail-cta{display:flex;gap:12px;flex-wrap:wrap}
.models{padding:34px 0}
.model-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.model-tab{padding:10px 22px;border:1px solid var(--line);background:#fff;border-radius:var(--pill);font-weight:700;color:var(--steel-600);cursor:pointer;transition:var(--tr)}
.model-tab.active{background:var(--orange);color:#fff;border-color:var(--orange)}
.model-panel{display:none}
.model-panel.active{display:block}
.model-panel-content{background:var(--mist);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 32px;border-top:1px solid var(--line)}
.spec-item{display:flex;gap:14px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14px;line-height:1.5;align-items:flex-start}
.spec-header{grid-column:1 / -1}
.spec-header .spec-label{width:auto;color:var(--steel-900);font-size:15px;font-weight:700;padding-top:8px}
.spec-label{color:var(--muted);font-weight:600;min-width:140px;width:38%;flex-shrink:0}
.spec-value{color:var(--ink);flex:1;word-break:break-word}
.features{padding:20px 0}
.feature-list{list-style:none;display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.feature-list li{display:flex;gap:10px;align-items:flex-start;color:var(--ink);font-size:14px}
.feature-list .i-mini{color:var(--orange);margin-top:4px;flex:0 0 auto}
.detail-desc{padding:20px 0 40px}
.detail-desc h3{font-size:20px;margin-bottom:14px}
.detail-desc p{color:var(--muted);font-size:16px;white-space:pre-line;line-height:1.8}
.related{padding:54px 0;background:var(--mist)}

/* ===== 关于 ===== */
.about-intro{padding:64px 0}
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:46px;align-items:center}
.about-text h2{font-size:32px;margin-bottom:18px}
.about-text p{color:var(--muted);font-size:16px;white-space:pre-line;line-height:1.85;margin-bottom:16px}
.about-figure{aspect-ratio:4/3;border-radius:18px;background:linear-gradient(135deg,#2a313b,#14181d);
  display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.25);overflow:hidden;position:relative;border:1px solid rgba(255,255,255,.08)}
.about-figure img{width:100%;height:100%;object-fit:cover;display:block;border-radius:18px}
.factory-strip{background:var(--mist);padding:40px 0}
.factory-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.factory-item{text-align:center;padding:26px 16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.factory-item .fi-num{font-size:36px;font-weight:800;color:var(--orange);line-height:1}
.factory-item .fi-label{color:var(--muted);font-size:14px;margin-top:8px}
.certs{padding:40px 0;text-align:center}
.cert-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.cert-pill{background:#fff;border:1px solid var(--line);color:var(--steel-700);font-weight:700;padding:9px 22px;border-radius:var(--pill);font-size:14px}
.cert-pill::before{content:"✦";color:var(--orange);margin-right:8px}
.milestones{padding:56px 0}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.tl-item{border-left:3px solid var(--orange);padding-left:16px;background:var(--mist);padding:18px 16px;border-radius:0 10px 10px 0}
.tl-year{font-size:22px;font-weight:800;color:var(--orange)}
.tl-text{color:var(--muted);font-size:14px;margin-top:6px;line-height:1.6}

/* ===== 案例 ===== */
.case-cat{padding:30px 0}
.case-list{display:flex;flex-direction:column;gap:30px}
.case-card{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:var(--tr)}
.case-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:rgba(226,88,34,.4)}
.case-card.reverse{direction:rtl}
.case-card.reverse>*{direction:ltr}
.case-thumb{aspect-ratio:16/10;border-radius:12px;object-fit:cover;background:var(--mist);width:100%}
.case-thumb.placeholder{display:flex;align-items:center;justify-content:center;font-size:54px;font-weight:800;color:rgba(28,34,42,.16);
  background:linear-gradient(135deg,#eef1f4,#e1e7ee)}
.case-body h4{font-size:21px;margin-bottom:12px;color:var(--steel-900)}
.case-body p{color:var(--muted);margin-bottom:16px;line-height:1.7}
.case-meta{display:flex;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--steel-600);margin-bottom:14px}
.case-meta .i-mini{color:var(--orange)}
.case-machine{background:var(--orange-soft);color:var(--orange-dark);padding:3px 13px;border-radius:var(--pill);font-weight:700}
.case-more{display:inline-flex;align-items:center;gap:6px;color:var(--orange);font-weight:700;font-size:14px}
.case-more .i-mini{transition:transform var(--tr)}
.case-card:hover .case-more .i-mini{transform:translateX(4px)}

/* ===== 新闻 ===== */
.news-page{padding:40px 0 90px}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:var(--tr);display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.news-thumb{aspect-ratio:16/9;object-fit:cover;background:var(--mist);width:100%}
.news-thumb.placeholder{display:flex;align-items:center;justify-content:center;font-size:44px;font-weight:800;color:rgba(28,34,42,.16);
  background:linear-gradient(135deg,#eef1f4,#e1e7ee)}
.news-body{padding:20px;flex:1;display:flex;flex-direction:column}
.news-meta{display:flex;gap:10px;font-size:12px;color:var(--muted);margin-bottom:10px;align-items:center}
.news-cat{background:var(--orange-soft);color:var(--orange-dark);padding:3px 11px;border-radius:var(--pill);font-weight:700}
.news-body h4{font-size:17px;margin-bottom:10px;color:var(--steel-900);line-height:1.5;transition:color var(--tr)}
.news-card:hover .news-body h4{color:var(--orange)}
.news-body p{color:var(--muted);font-size:14px;flex:1;line-height:1.6}
.news-body .news-more{margin-top:14px;color:var(--orange);font-weight:700;font-size:14px;display:inline-flex;align-items:center;gap:5px}
.pager{display:flex;gap:8px;justify-content:center;margin-top:40px}
.pager a{padding:9px 15px;border:1px solid var(--line);border-radius:8px;color:var(--steel-600);font-weight:700;transition:var(--tr)}
.pager a:hover{border-color:var(--orange);color:var(--orange)}
.pager a.active{background:var(--orange);color:#fff;border-color:var(--orange)}
.article{padding:36px 0 56px}
.article-inner{max-width:880px;margin:0 auto}
.article-head{margin-bottom:26px}
.article-head h1{font-size:34px;margin-bottom:14px;line-height:1.3}
.article-meta{display:flex;gap:14px;color:var(--muted);font-size:13px;align-items:center}
.article-cover{width:100%;border-radius:var(--radius);margin-bottom:26px}
.article-body{font-size:17px;color:var(--ink);white-space:pre-line;line-height:1.9}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin-top:40px;border-top:1px solid var(--line);padding-top:26px;flex-wrap:wrap}
.article-nav a{color:var(--orange);font-weight:700;max-width:48%}
.article-nav a:hover{text-decoration:underline}

/* ===== 联系 ===== */
.contact-page{padding:50px 0 90px}
.contact-grid{display:grid;grid-template-columns:1.4fr .8fr;gap:44px;align-items:start}
.form-intro{color:var(--muted);margin-bottom:22px;font-size:16px}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.form-row{margin-bottom:18px}
.form-row.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.contact-form label{display:block;font-weight:600;font-size:14px;margin-bottom:7px;color:var(--steel-900)}
.contact-form input,.contact-form textarea{width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit;background:#fff;transition:border-color var(--tr)}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--orange);box-shadow:0 0 0 3px var(--orange-soft)}
.contact-info{background:var(--steel-800);color:#fff;border-radius:var(--radius);padding:30px;position:relative;overflow:hidden}
.contact-info::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--orange)}
.contact-info h3{color:#fff;font-size:20px;margin-bottom:18px}
.ci-row{display:flex;align-items:center;gap:11px;margin-bottom:14px;color:var(--steel-300);font-size:14px}
.ci-row .i-mini{color:var(--orange);flex:0 0 auto}
.ci-row a{color:#fff}
.ci-row a:hover{color:var(--orange)}
.contact-info .contact-callout{margin-top:18px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:10px;padding:14px 16px}
.thanks-page{padding:110px 0;text-align:center}
.thanks-inner{max-width:580px;margin:0 auto}
.thanks-icon{width:84px;height:84px;color:#fff;background:var(--orange);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 22px}
.thanks-icon svg{width:44px;height:44px}
.thanks-inner h1{font-size:34px;margin-bottom:14px}
.thanks-inner p{color:var(--muted);margin-bottom:26px;font-size:16px}

/* 联系表单内嵌联系人条（贯穿全站统一组件） */
.contact-callout{display:inline-flex;align-items:center;gap:10px;background:var(--orange-soft);border:1px solid rgba(226,88,34,.35);
  color:var(--orange-dark);padding:10px 20px;border-radius:var(--pill);font-weight:700;font-size:15px}
.contact-callout.on-dark{background:rgba(226,88,34,.18);border-color:rgba(226,88,34,.6);color:#fff}
.contact-callout .cc-ico{font-size:16px}
.contact-callout a{color:inherit;text-decoration:underline;font-weight:800}

/* ===== 页脚 ===== */
.site-footer{background:var(--steel-900);color:var(--steel-300);padding-top:54px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;align-items:stretch}
.footer-brand,.footer-col{display:flex;flex-direction:column;justify-content:flex-start;height:100%}
.footer-brand .brand{color:#fff;font-size:21px;margin-bottom:16px}
.footer-brand p{font-size:14px;margin-bottom:18px;max-width:340px;line-height:1.8;color:var(--steel-400)}
.footer-contact>div{display:flex;align-items:center;gap:9px;font-size:13px;margin-bottom:10px;color:#fff}
.footer-contact a{color:#fff}
.footer-contact a:hover{color:var(--orange)}
.footer-contact .i-mini{color:var(--orange);flex:0 0 auto}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.08);color:#fff;transition:var(--tr)}
.footer-social a:hover{background:var(--orange);transform:translateY(-2px)}
.footer-social a svg{width:20px;height:20px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;position:relative;padding-left:12px}
.footer-col h4::before{content:"";position:absolute;left:0;top:3px;bottom:3px;width:3px;border-radius:2px;background:var(--orange)}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a{color:var(--steel-300);font-size:14px;transition:var(--tr)}
.footer-col a:hover{color:var(--orange);padding-left:4px}
.footer-bar{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;font-size:13px;color:var(--steel-500)}
.footer-bar .container{text-align:center}
.footer-tech{margin-left:8px}
.footer-tech a{color:var(--orange)}
.footer-tech a:hover{text-decoration:underline}

/* ===== 浮动按钮 ===== */
.float-buttons{position:fixed;right:1.5rem;bottom:1.5rem;z-index:9999;display:flex;flex-direction:column;gap:.75rem}
.float-btn{width:52px;height:52px;border-radius:50%;border:0;display:flex;align-items:center;justify-content:center;
  color:var(--white);box-shadow:var(--shadow-lg);transition:var(--tr);position:relative;cursor:pointer}
.float-btn:hover{transform:scale(1.1)}
.float-btn svg{width:24px;height:24px}
.float-btn-label{position:absolute;right:60px;background:var(--steel-900);color:var(--white);
  padding:.4rem .75rem;border-radius:var(--radius-sm);font-size:.8rem;white-space:nowrap;opacity:0;visibility:hidden;transition:var(--tr)}
.float-btn:hover .float-btn-label{opacity:1;visibility:visible}
.float-whatsapp{background:var(--whatsapp)}
.float-facebook{background:var(--facebook)}
.float-email{background:var(--steel-600)}
.float-inquiry{background:var(--orange)}
.float-top{background:var(--steel-500);opacity:0;visibility:hidden;transition:var(--tr)}
.float-top.visible{opacity:1;visibility:visible}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-side{max-width:560px}
  .product-grid,.adv-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
  .app-grid{grid-template-columns:repeat(3,1fr)}
  .timeline,.factory-grid{grid-template-columns:repeat(2,1fr)}
  .hero::before{background:linear-gradient(180deg,rgba(20,24,29,.7) 0%,rgba(20,24,29,.45) 55%,rgba(20,24,29,.7) 100%)}
  .detail-grid,.about-grid,.case-card,.contact-grid{grid-template-columns:1fr}
  .case-card.reverse{direction:ltr}
  .hero-text h1{font-size:44px}
}
@media (max-width:680px){
  .container{padding:0 20px}
  .section{padding:60px 0}
  .section-head h2{font-size:28px}
  .topbar-util{font-size:12px}
  .util-certs{display:none}
  .util-left{gap:10px}
  .main-nav{position:sticky;top:0}
  .nav-inner{height:56px}
  .brand{font-size:20px}
  .nav-menu{position:absolute;top:56px;left:0;right:0;background:var(--steel-800);flex-direction:column;align-items:stretch;
    padding:12px;gap:4px;display:none;border-top:1px solid rgba(255,255,255,.08);box-shadow:0 14px 26px rgba(0,0,0,.25)}
  .nav-menu.open{display:flex}
  .nav-toggle{display:flex}
  .nav-menu a.btn-quote{margin:6px 0 0}
  .nav-menu a::after{display:none}
  .hero{min-height:auto}
  .hero-inner{padding-top:48px;padding-bottom:56px}
  .hero-text h1{font-size:32px;line-height:1.15}
  .hero-sub{font-size:16px}
  .hero-badge{margin-bottom:16px}
  .carousel-arrow{display:none}
  .stats-row{grid-template-columns:repeat(2,1fr);gap:16px;padding:34px 0}
  .stat-value{font-size:32px}
  .stat:not(:last-child)::after{display:none}
  .product-grid,.adv-grid,.news-grid,.app-grid,.timeline,.factory-grid{grid-template-columns:1fr}
  .spec-grid{grid-template-columns:1fr}
  .spec-label{min-width:110px;width:40%}
  .feature-list{grid-template-columns:1fr}
  .cat-sticky{display:none}
  .group-block .product-grid{display:none}
  .group-block.open .product-grid{display:grid}
  .group-title{position:relative;cursor:pointer;padding:14px 40px 14px 16px;border-radius:10px;
    background:var(--mist);color:var(--steel-700);font-weight:700;margin-bottom:16px;user-select:none}
  .group-block.open .group-title{background:var(--orange-soft);color:var(--orange-dark);border-left:5px solid var(--orange);padding-left:11px}
  .group-title::after{content:"";position:absolute;right:16px;top:50%;width:8px;height:8px;
    border-right:2px solid currentColor;border-bottom:2px solid currentColor;
    transform:translateY(-70%) rotate(45deg);transition:transform .2s}
  .group-block.open .group-title::after{transform:translateY(-30%) rotate(-135deg)}
  .group-block{margin-bottom:18px;scroll-margin-top:120px}
  .products-home,.products-page{padding:22px 0 56px}
  .model-panel-content{padding:18px}
  .page-hero{padding:54px 0 40px}
  .page-hero h1{font-size:30px}
  .float-buttons{right:1rem;bottom:1rem}
  .float-btn{width:46px;height:46px}
  .float-btn svg{width:20px;height:20px}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:30px}
  .footer-brand p{max-width:none}
  .footer-bar .container{font-size:12px;line-height:1.9}
  .footer-tech{display:block;margin:6px 0 0}
  .util-txt{display:none}
  .util-right{gap:12px}
  .util-wa,.util-phone{font-size:0}
  .util-wa .i-mini,.util-phone .i-mini{width:18px;height:18px}
}