/* ============================================================
   铭洋安信（上海）金属有限公司 · 企业官网全局样式
   深蓝黑 + 铂银 + 冷蓝 · 国际工业科技 · 响应式
   字体：免费商用（思源黑体/微软雅黑等系统无衬线栈）
   ============================================================ */

:root{
  --ink:#0d1117;        /* 石墨黑 */
  --ink-2:#111a26;      /* 深蓝黑 */
  --ink-3:#182230;
  --silver:#c8cdd6;     /* 铂银 */
  --silver-2:#e9edf2;
  --ice:#5aa7ff;        /* 冷蓝 */
  --ice-2:#3b82f6;
  --bg:#ffffff;
  --bg-soft:#f4f6f9;
  --text:#1a1f26;
  --muted:#5b6470;
  --line:rgba(13,17,23,.10);
  --line-dark:rgba(255,255,255,.14);
  --radius:14px;
  --shadow:0 10px 30px rgba(13,17,23,.08);
  --font:'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',sans-serif;
  --maxw:1200px;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  font-family:var(--font);
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px;}
.ice{color:var(--ice-2);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 26px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:.25s;
}
.btn-primary{background:var(--ice-2);color:#fff;}
.btn-primary:hover{background:#2f6fe0;transform:translateY(-2px);box-shadow:0 8px 22px rgba(59,130,246,.35);}
.btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);}
.btn-dark{background:var(--ink);color:#fff;}
.btn-dark:hover{background:#202a38;transform:translateY(-2px);}
.btn-line{border-color:var(--line);color:var(--text);}
.btn-line:hover{border-color:var(--ice-2);color:var(--ice-2);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:transparent;transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.site-header.scrolled{
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);box-shadow:0 6px 20px rgba(13,17,23,.06);
}
.header-inner{position:relative;display:flex;align-items:center;justify-content:flex-start;gap:28px;height:74px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-logo{height:42px;width:auto;object-fit:contain;}
.brand .logo-light{filter:brightness(0) invert(1);}
.brand .logo-dark{display:none;}
.site-header.scrolled .logo-light{display:none;}
.site-header.scrolled .logo-dark{display:block;filter:none;}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text strong{color:#fff;font-size:20px;letter-spacing:1px;}
.brand-text small{color:var(--silver);font-size:10px;letter-spacing:1.5px;}

.site-nav{flex:1;display:flex;align-items:center;gap:18px;}
.nav-list{flex:1;display:flex;align-items:center;justify-content:space-between;gap:4px;flex-wrap:nowrap;margin:0;padding:0;list-style:none;}
.nav-list a{
  display:block;padding:9px 15px;color:#fff;white-space:nowrap;
  font-size:15px;font-weight:500;border-radius:8px;transition:.2s;position:relative;
}
.nav-list a:hover{color:#fff;background:rgba(255,255,255,.14);}
.nav-list a.active{color:#fff;font-weight:600;}
.site-header.scrolled .nav-list a{color:var(--text);}
.site-header.scrolled .nav-list a:hover{color:var(--ink);background:var(--bg-soft);}
.site-header.scrolled .nav-list a.active{color:var(--ink);font-weight:600;background:none;}
.nav-list a.active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:4px;height:2px;
  background:var(--ice);border-radius:2px;
}

/* 二级下拉菜单（后台栏目 {category} 动态生成） */
.nav-list .has-mega{position:relative;}
.nav-list .caret{display:inline-block;margin-left:4px;font-size:11px;color:rgba(255,255,255,.85);transition:.2s;}
.site-header.scrolled .nav-list .caret{color:var(--muted);}
.nav-list .has-mega:hover .caret{transform:rotate(180deg);}
.nav-list .has-mega .mega{
  position:absolute;top:100%;left:50%;min-width:220px;
  background:#fff;border-radius:12px;box-shadow:var(--shadow);overflow:hidden;
  opacity:0;visibility:hidden;transform:translate(-50%,8px);transition:.2s;z-index:60;padding:8px;
}
.nav-list .has-mega:hover .mega{opacity:1;visibility:visible;transform:translate(-50%,0);}
.mega-inner{display:flex;flex-direction:column;gap:2px;}
.mega .cat-link{display:block;padding:11px 14px;color:var(--text);font-size:14px;font-weight:600;border-radius:8px;}
.mega .cat-link:hover{background:var(--bg-soft);color:var(--ice-2);}

.header-extra{margin-left:8px;}
.lang-switch{position:relative;}
.lang-btn{
  display:flex;align-items:center;justify-content:center;gap:0;background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.28);color:#fff;
  width:38px;height:38px;border-radius:50%;font-size:14px;cursor:pointer;font-family:var(--font);transition:.2s;
}
.lang-btn:hover{background:rgba(255,255,255,.18);color:#fff;}
.site-header.scrolled .lang-btn{background:var(--bg-soft);border-color:var(--line);color:var(--text);}
.site-header.scrolled .lang-btn:hover{background:#eef1f5;color:var(--ink);}
.lang-menu{
  position:absolute;left:50%;top:calc(100% + 8px);min-width:150px;
  background:#fff;border-radius:10px;box-shadow:var(--shadow);overflow:hidden;
  opacity:0;visibility:hidden;transform:translate(-50%,8px);transition:.2s;z-index:50;
}
.lang-switch:hover .lang-menu,.lang-switch.open .lang-menu{opacity:1;visibility:visible;transform:translate(-50%,0);}
.lang-menu a{display:block;padding:11px 18px;color:var(--text);font-size:14px;text-align:center;}
.lang-menu a:hover{background:var(--bg-soft);color:var(--ice-2);}
.lang-menu a.active{color:var(--ice-2);font-weight:600;}

/* 汉堡菜单 */
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;}
.nav-toggle span{width:24px;height:2px;background:#fff;border-radius:2px;transition:.25s;}
.site-header.scrolled .nav-toggle span{background:var(--ink);}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 首页轮播 ---------- */
.hero-slider{position:relative;height:100vh;min-height:520px;max-height:950px;overflow:hidden;background:var(--ink);}
.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity 1s ease;z-index:1;}
.hero-slide.active{opacity:1;z-index:2;}
.hero-slide img{width:100%;height:100%;object-fit:cover;}
.hero-slide::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,17,23,.88) 0%,rgba(13,17,23,.55) 45%,rgba(13,17,23,.25) 100%);}
.hero-caption{position:absolute;z-index:5;top:50%;transform:translateY(-50%);max-width:760px;left:max(20px, calc((100vw - 1200px)/2 + 20px));right:auto;margin:0;padding:0;text-align:left;}
.hero-caption .hero-eyebrow{color:var(--ice);font-size:16px;letter-spacing:4px;font-weight:600;text-transform:uppercase;margin-bottom:20px;}
.hero-caption h1{color:#fff;font-size:62px;line-height:1.12;font-weight:700;margin-bottom:20px;}
.hero-caption h1 em{font-style:normal;color:var(--ice);}
.hero-caption p{color:var(--silver-2);font-size:20px;max-width:700px;margin-bottom:30px;}
.hero-caption .hero-meta{color:var(--silver);font-size:17px;letter-spacing:1px;margin-bottom:32px;}

/* 轮播指示点与箭头 */
.hero-dots{position:absolute;z-index:6;bottom:26px;left:50%;transform:translateX(-50%);display:flex;gap:10px;}
.hero-dots button{width:10px;height:10px;border-radius:50%;border:none;background:rgba(255,255,255,.35);cursor:pointer;transition:.25s;}
.hero-dots button.active{background:var(--ice);width:26px;border-radius:6px;}
.hero-arrow{position:absolute;z-index:6;top:50%;transform:translateY(-50%);width:46px;height:46px;border-radius:50%;background:rgba(255,255,255,.1);border:1px solid var(--line-dark);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.2s;}
.hero-arrow:hover{background:var(--ice-2);border-color:var(--ice-2);}
.hero-arrow.prev{left:22px;}
.hero-arrow.next{right:22px;}

/* ---------- 通用区块 ---------- */
.section{padding:88px 0;}
.section-head{text-align:center;max-width:760px;margin:0 auto 52px;}
.eyebrow{color:var(--ice-2);font-size:13px;letter-spacing:3px;font-weight:600;text-transform:uppercase;margin-bottom:12px;}
.section-head h2{font-size:36px;font-weight:700;line-height:1.2;color:var(--ink);margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16px;}
.about-intro{display:grid;grid-template-columns:1.25fr 1fr;gap:52px;align-items:center;margin-bottom:56px;}
.about-copy .eyebrow{color:var(--ice-2);font-size:13px;letter-spacing:3px;font-weight:600;text-transform:uppercase;margin-bottom:12px;}
.about-copy h2{font-size:36px;font-weight:700;line-height:1.2;color:var(--ink);margin-bottom:18px;}
.about-copy p{color:var(--muted);font-size:16px;line-height:1.85;margin-top:16px;}
.about-copy .btn{margin-top:28px;}
.about-media{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);}
.about-media img{width:100%;height:100%;object-fit:cover;display:block;aspect-ratio:4/3;}
.section.soft{background:var(--bg-soft);}
.section.dark{background:var(--ink-2);color:#fff;}
.section.dark .section-head h2{color:#fff;}
.section.dark .section-head p{color:var(--silver);}

/* 分区标题（左对齐带细线） */
.block-title{display:flex;align-items:center;gap:14px;margin-bottom:30px;}
.block-title .bar{width:4px;height:26px;background:var(--ice-2);border-radius:2px;}
.block-title h3{font-size:26px;font-weight:700;color:var(--ink);}

/* ---------- 大数字指标 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.stat-card{display:flex;flex-direction:column;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 24px 26px;text-align:center;position:relative;overflow:hidden;transition:.25s;}
.stat-card::before{content:"";position:absolute;left:0;top:0;right:0;height:3px;background:linear-gradient(90deg,var(--ice-2),var(--ice));opacity:0;transition:.25s;}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.stat-card:hover::before{opacity:1;}
.stat-icon{display:inline-flex;align-items:center;justify-content:center;width:54px;height:54px;border-radius:14px;background:var(--bg-soft);color:var(--ice-2);margin-bottom:16px;}
.stat-card .num{font-size:42px;font-weight:800;color:var(--ink);line-height:1;}
.stat-card .num .suffix,.stat-card .num .sep{color:var(--ice-2);}
.stat-card .label{color:var(--muted);font-size:14px;margin-top:14px;line-height:1.5;text-align:center;}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:.25s;display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);}
.card .card-media{aspect-ratio:16/10;overflow:hidden;}
.card .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s;}
.card:hover .card-media img{transform:scale(1.05);}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.card-body h4{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.card-body p{color:var(--muted);font-size:14px;flex:1;}
.card-link{margin-top:16px;color:var(--ice-2);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px;transition:.2s;}
.card-link:hover{gap:10px;}

/* 技术大数字卡片 */
.tech-grid{display:flex;flex-direction:column;gap:24px;}
.tech-row{display:grid;gap:24px;}
.tech-row.r2{grid-template-columns:repeat(2,1fr);}
.tech-row.r3{grid-template-columns:repeat(3,1fr);}
.tech-card{
  position:relative;background:var(--ink-2);background-size:cover;background-position:center;
  border:none;border-radius:var(--radius);
  padding:30px;color:#fff;overflow:hidden;transition:.3s;
}
.tech-card::after{
  content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(180deg,rgba(13,17,23,.30),rgba(13,17,23,.86));transition:.3s;
}
.tech-card:hover::after{background:linear-gradient(180deg,rgba(13,17,23,.12),rgba(13,17,23,.76));}
.tech-card>*{position:relative;z-index:1;}
.tech-card:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(0,0,0,.3);}
.tech-card .t-num{font-size:34px;font-weight:800;color:var(--ice);line-height:1;}
.tech-card h4{font-size:19px;font-weight:700;margin:14px 0 6px;}
.tech-card .t-en{color:var(--ice);font-size:12px;letter-spacing:2px;text-transform:uppercase;margin-bottom:12px;}
.tech-card .t-cap{font-size:28px;font-weight:700;color:var(--silver);margin-bottom:10px;}
.tech-card p{color:var(--silver);font-size:14px;}
.commit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.commit-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;transition:.25s;box-shadow:0 4px 18px rgba(0,0,0,.06);}
.commit-card:hover{transform:translateY(-6px);box-shadow:0 16px 34px rgba(0,0,0,.16);}
.commit-ic{width:48px;height:48px;border-radius:12px;background:var(--bg-soft);color:var(--ice-2);display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px;}
.commit-ic svg{width:24px;height:24px;}
.commit-card h4{font-size:17px;font-weight:600;color:var(--ink);margin-bottom:10px;}
.commit-card p{font-size:14px;color:var(--muted);line-height:1.7;}

/* ---------- 流程链（无缝轮播） ---------- */
.flow{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:14px;}
.flow-marquee{position:relative;overflow:hidden;padding:8px 0;}
.flow-marquee .flow-track{display:flex;width:max-content;animation:flowScroll 48s linear infinite;}
.flow-marquee .flow-track:hover{animation-play-state:paused;}
@keyframes flowScroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.flow-step{flex:0 0 auto;width:250px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 18px;text-align:center;position:relative;overflow:hidden;transition:.25s;margin-right:16px;}
.flow-step::before{content:"";position:absolute;left:0;top:0;right:0;height:3px;background:linear-gradient(90deg,var(--ice-2),var(--ice));opacity:0;transition:.25s;}
.flow-step:hover{transform:translateY(-5px);box-shadow:var(--shadow);}
.flow-step:hover::before{opacity:1;}
.flow-step .step-en{font-size:11px;font-weight:700;letter-spacing:2px;color:var(--ice-2);text-transform:uppercase;}
.flow-step .step-name{font-size:15px;font-weight:600;color:var(--ink);line-height:1.45;}
.flow .arrow{display:flex;align-items:center;color:var(--ice-2);font-size:24px;font-weight:700;flex-shrink:0;}
.flow .step{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 18px;min-width:150px;flex:1 1 150px;max-width:200px;text-align:center;
  position:relative;overflow:hidden;transition:.25s;
}
.flow .step::before{content:"";position:absolute;left:0;top:0;right:0;height:3px;background:linear-gradient(90deg,var(--ice-2),var(--ice));opacity:0;transition:.25s;}
.flow .step:hover{transform:translateY(-6px);box-shadow:var(--shadow);}
.flow .step:hover::before{opacity:1;}
.flow .step strong{color:var(--ink);font-size:16px;font-weight:700;letter-spacing:1.5px;}
.flow .step small{color:var(--ice-2);font-size:13px;letter-spacing:2px;}
.flow-foot{margin:24px auto 0;text-align:center;background:var(--bg-soft);border:1px dashed var(--line);border-radius:var(--radius);padding:14px 26px;color:var(--ice-2);font-size:15px;font-weight:600;letter-spacing:1px;max-width:640px;}

/* ---------- AI金属专区 ---------- */
.ai-hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;}
.ai-hero .ai-bg{position:absolute;inset:0;opacity:.5;}
.ai-hero .ai-bg img{width:100%;height:100%;object-fit:cover;}
.ai-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,17,23,.6),rgba(13,17,23,.85));}
.ai-hero .ai-content{position:relative;z-index:2;padding:120px 0;max-width:960px;}
.metal-row{display:flex;gap:20px;flex-wrap:wrap;margin-top:36px;}
.metal-item{flex:1;min-width:200px;background:rgba(255,255,255,.06);border:1px solid var(--line-dark);border-radius:var(--radius);padding:26px;backdrop-filter:blur(4px);display:block;text-decoration:none;color:inherit;cursor:pointer;transition:.3s;}
.metal-item:hover{transform:translateY(-5px);background:rgba(255,255,255,.12);box-shadow:0 18px 40px rgba(0,0,0,.35);}
.section[id]{scroll-margin-top:96px;}
.metal-item .sym{font-size:44px;font-weight:800;color:var(--ice);}
.metal-item .name{font-size:15px;letter-spacing:2px;text-transform:uppercase;color:var(--silver);margin:6px 0 10px;}
.metal-item p{font-size:13px;color:var(--silver-2);}

/* ---------- AI 视觉高潮（ai.html 整屏主视觉） ---------- */
.ai-showcase{min-height:94vh;display:flex;align-items:center;padding:130px 0 100px;}
.ai-showcase .ai-bg{opacity:.62;}
.ai-showcase .ai-content{max-width:1080px;text-align:center;margin:0 auto;}
.ai-showcase h2{font-size:50px;line-height:1.12;margin-bottom:44px;}
.showcase-row{display:flex;gap:26px;flex-wrap:wrap;justify-content:center;}
.showcase-metal{flex:1 1 280px;max-width:320px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:22px;padding:48px 26px 40px;text-align:center;backdrop-filter:blur(7px);display:block;text-decoration:none;color:#fff;transition:.35s;}
.showcase-metal:hover{transform:translateY(-10px);border-color:var(--ice);background:rgba(255,255,255,.11);box-shadow:0 22px 55px rgba(0,0,0,.4);}
.s-sym{font-size:88px;font-weight:800;line-height:1;background:linear-gradient(120deg,#fff 20%,var(--ice) 120%);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:16px;}
.s-name{font-size:18px;font-weight:700;letter-spacing:2.5px;text-transform:uppercase;color:#fff;margin-bottom:12px;}
.s-app{font-size:13.5px;line-height:1.75;color:var(--silver);}
.showcase-tag{margin-top:56px;color:var(--ice);letter-spacing:2px;font-weight:600;font-size:15px;}
@media (max-width:768px){
  .ai-showcase{min-height:auto;padding:110px 0 70px;}
  .ai-showcase h2{font-size:32px;}
  .s-sym{font-size:60px;}
  .showcase-metal{flex:1 1 100%;max-width:none;}
  .showcase-tag{font-size:13px;letter-spacing:1px;line-height:1.7;}
}

/* ---------- 页面标题（内页） ---------- */
.page-hero{position:relative;background:var(--ink-2);color:#fff;padding:130px 0 70px;border-bottom:3px solid var(--ice-2);text-align:center;background-size:cover;background-position:center;}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,17,23,.70),rgba(13,17,23,.86));}
.page-hero .container{position:relative;z-index:1;}
.page-hero h1{font-size:40px;font-weight:700;margin-bottom:10px;}
.page-hero p{color:var(--silver);font-size:16px;max-width:720px;margin:0 auto;}
.breadcrumb{color:var(--silver);font-size:14px;margin-top:14px;}
.breadcrumb a{color:var(--ice);}
.breadcrumb a:hover{text-decoration:underline;}
.breadcrumb span{margin:0 8px;color:var(--muted);}

/* ---------- 关于我们 ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;}
.about-media img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%;object-fit:cover;}
.about-media .media-2{margin-top:20px;}
.about-text h2{font-size:30px;font-weight:700;color:var(--ink);margin-bottom:18px;}
.about-text p{color:var(--muted);margin-bottom:16px;}
.about-points{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px;}
.about-points .ap-item{display:flex;gap:12px;align-items:center;background:#f6f8fb;border:1px solid var(--line);border-radius:12px;padding:14px 16px;color:var(--text);font-size:14px;font-weight:600;line-height:1.5;transition:.3s;}
.about-points .ap-item:hover{border-color:var(--ice);background:#fff;box-shadow:var(--shadow);transform:translateY(-3px);}
.about-points .ap-icon{width:40px;height:40px;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;background:rgba(91,167,255,.12);color:var(--ice-2);}
.about-points .ap-item:hover .ap-icon{background:var(--ice-2);color:#fff;}

/* 时间轴/阶段 */
.stage-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.stage{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;border-top:3px solid var(--ice-2);transition:.3s;}
.stage:hover{box-shadow:var(--shadow);transform:translateY(-4px);}
.stage-icon{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;background:rgba(91,167,255,.12);color:var(--ice-2);margin-bottom:16px;}
.stage:hover .stage-icon{background:var(--ice-2);color:#fff;}
.stage h4{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:10px;}
.stage p{color:var(--muted);font-size:14px;}
.vision-grid{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:stretch;gap:16px;margin-top:46px;}
.vision-card{background:rgba(17,26,38,.55);border:1px solid var(--line-dark);border-radius:16px;padding:28px 24px;transition:.3s;}
.vision-card:hover{transform:translateY(-4px);border-color:var(--ice);box-shadow:0 20px 40px rgba(0,0,0,.35);}
.v-icon{width:46px;height:46px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;background:rgba(91,167,255,.14);color:var(--ice);margin-bottom:16px;}
.vision-card:hover .v-icon{background:var(--ice);color:#fff;}
.vision-card h4{font-size:17px;font-weight:700;color:#fff;margin-bottom:8px;}
.vision-card p{font-size:13px;line-height:1.7;color:var(--silver);}
.vision-arrow{display:flex;align-items:center;color:var(--ice);font-size:26px;font-weight:700;}

/* ---------- 产品 ---------- */
.p-product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.p-product{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;}
.p-product:hover{transform:translateY(-5px);box-shadow:var(--shadow);}
.p-product .pp-media{aspect-ratio:1/1;overflow:hidden;background:var(--bg-soft);}
.p-product .pp-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s;}
.p-product:hover .pp-media img{transform:scale(1.05);}
.p-product .pp-body{padding:20px;}
.p-product .pp-body h4{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:6px;}
.p-product .pp-body p{color:var(--muted);font-size:14px;}
.p-product .pp-body .tag{display:inline-block;margin-top:12px;color:var(--ice-2);font-weight:600;font-size:14px;}
.prod-cats{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin:6px auto 48px;}
.prod-cats a{padding:10px 22px;border:1px solid var(--line);border-radius:30px;color:var(--text);font-size:14px;font-weight:600;background:#fff;transition:.25s;}
.prod-cats a:hover{border-color:var(--ice);color:var(--ice-2);background:rgba(91,167,255,.08);}
/* 产品页左右布局 */
.product-layout{display:grid;grid-template-columns:250px 1fr;gap:40px;align-items:start;}
.cat-sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:14px;}
.side-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;}
.side-box h3{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line);}
.side-box h4{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:12px;padding-bottom:10px;border-bottom:1px solid var(--line);}
.cat-nav{display:flex;flex-direction:column;gap:6px;}
.cat-nav a{display:flex;align-items:center;justify-content:center;padding:12px 14px;border-radius:10px;color:var(--text);font-size:14px;font-weight:600;text-align:center;transition:.2s;}
.cat-nav a:hover{background:var(--bg-soft);color:var(--ice-2);}
.cat-nav a.active{background:var(--ice-2);color:#fff;}
.cat-hot-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px;}
.cat-hot-list li a{display:flex;align-items:center;justify-content:center;padding:12px 14px;border-radius:10px;color:var(--text);font-size:14px;font-weight:600;text-align:center;transition:.2s;}
.cat-hot-list li a:hover{background:var(--bg-soft);color:var(--ice-2);}
.contact-box{background:var(--bg-soft);}
.contact-card{background:#fff;border-radius:12px;padding:22px 18px;}
.contact-card h4{font-size:16px;font-weight:700;color:var(--ink);}
.contact-card p{font-size:13px;color:var(--muted);margin:8px 0 0;line-height:1.6;}
.contact-btn{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:16px;padding:11px 0;border-radius:10px;background:#25D366;color:#fff;font-size:14px;font-weight:600;transition:.2s;}
.contact-btn:hover{background:#1bb457;color:#fff;}
.prod-cat{margin-bottom:64px;}
.prod-cat:last-child{margin-bottom:0;}
.pc-top{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;margin-bottom:28px;}
.pc-media{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);}
.pc-media img{width:100%;height:100%;object-fit:cover;display:block;aspect-ratio:16/10;}
.pc-info .pc-no{font-size:13px;font-weight:700;color:var(--ice-2);letter-spacing:3px;}
.pc-info h3{font-size:26px;font-weight:700;color:var(--ink);margin:8px 0 12px;}
.pc-info p{color:var(--muted);font-size:14px;line-height:1.8;}
.pc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.pc-grid.two-col{grid-template-columns:repeat(2,1fr);}
.pc-title{margin-bottom:20px;}
.pc-title h3{font-size:26px;font-weight:700;color:var(--ink);}
.pc-title p{color:var(--muted);font-size:14px;margin-top:8px;}
.pc-item{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:.25s;}
.pc-item .pi-media{width:100%;aspect-ratio:1/1;overflow:hidden;background:#fafbfc;display:flex;align-items:center;justify-content:center;}
.pc-item .pi-media img{width:100%;height:100%;object-fit:contain;display:block;transition:transform .5s;padding:10px;}
.pc-item:hover .pi-media img{transform:scale(1.06);}
.pc-item .pi-name{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:14px 16px;color:var(--text);font-size:15px;font-weight:600;}
.pc-item:hover{border-color:var(--ice);box-shadow:var(--shadow);transform:translateY(-3px);}
.pc-item .pc-tag{color:var(--ice-2);font-size:13px;}

/* ---------- 参数表 ---------- */
.data-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.data-table th{background:var(--ink);color:#fff;text-align:left;padding:14px 18px;font-weight:600;font-size:14px;}
.data-table td{padding:13px 18px;border-top:1px solid var(--line);font-size:14px;color:var(--text);}
.data-table tr:nth-child(even) td{background:var(--bg-soft);}
.data-table td:first-child{font-weight:600;color:var(--ink);width:34%;}
.table-wrap{overflow-x:auto;}

/* ---------- 新闻 ---------- */
.news-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:18px;}
.news-item{
  display:flex;gap:22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;transition:.25s;align-items:center;
}
.news-item:hover{border-color:var(--ice);box-shadow:var(--shadow);transform:translateX(4px);}
.news-item .n-date{text-align:center;flex-shrink:0;width:74px;padding:10px;background:var(--bg-soft);border-radius:10px;}
.news-item .n-date b{display:block;font-size:26px;color:var(--ice-2);line-height:1;}
.news-item .n-date span{font-size:12px;color:var(--muted);}
.news-item .n-body h4{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:6px;}
.news-item .n-body p{color:var(--muted);font-size:14px;}
.news-item .n-body .n-more{color:var(--ice-2);font-size:13px;font-weight:600;margin-top:8px;display:inline-flex;align-items:center;gap:6px;}
.news-wrap{display:grid;grid-template-columns:1.55fr 1fr;gap:28px;align-items:start;}
.news-feature{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.3s;}
.news-feature:hover{box-shadow:var(--shadow);transform:translateY(-4px);}
.news-feature .nf-media{aspect-ratio:2.2/1;overflow:hidden;}
.news-feature .nf-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s;}
.news-feature:hover .nf-media img{transform:scale(1.05);}
.news-feature .nf-body{flex-shrink:0;padding:24px;}
.news-feature .nf-date{display:inline-block;font-size:12px;color:var(--ice-2);font-weight:600;letter-spacing:1px;margin-bottom:10px;}
.news-feature h4{font-size:22px;font-weight:700;color:var(--ink);line-height:1.4;margin-bottom:10px;}
.news-feature p{color:var(--muted);font-size:14px;line-height:1.7;margin-bottom:16px;}
.news-feature .n-more{color:var(--ice-2);font-size:13px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.news-list{display:flex;flex-direction:column;justify-content:flex-start;gap:14px;}
.n-item{display:flex;gap:12px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:10px;transition:.3s;}
.n-item:hover{border-color:var(--ice);box-shadow:var(--shadow);transform:translateX(4px);}
.n-item .n-thumb{width:88px;height:64px;flex-shrink:0;overflow:hidden;border-radius:8px;}
.n-item .n-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s;}
.n-item:hover .n-thumb img{transform:scale(1.06);}
.n-item .n-body h4{font-size:14px;font-weight:700;color:var(--ink);line-height:1.45;margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.n-item .n-date{font-size:12px;color:var(--muted);}
.n-item .n-more{color:var(--ice-2);font-size:12px;font-weight:600;display:inline-flex;align-items:center;gap:5px;margin-top:4px;}
.news-list-page{display:flex;flex-direction:column;gap:24px;}
.np-item{display:flex;gap:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;transition:.3s;}
.np-item:hover{border-color:var(--ice);box-shadow:var(--shadow);transform:translateY(-4px);}
.np-item .np-thumb{width:260px;height:170px;flex-shrink:0;overflow:hidden;border-radius:12px;}
.np-item .np-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s;}
.np-item:hover .np-thumb img{transform:scale(1.05);}
.np-item .np-body{display:flex;flex-direction:column;justify-content:center;}
.np-item .np-date{font-size:13px;color:var(--ice-2);font-weight:600;letter-spacing:1px;margin-bottom:8px;}
.np-item h4{font-size:20px;font-weight:700;color:var(--ink);margin-bottom:10px;line-height:1.4;}
.np-item p{color:var(--muted);font-size:14px;line-height:1.7;margin-bottom:14px;}
.np-item .n-more{color:var(--ice-2);font-size:13px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.pagination{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:44px;flex-wrap:wrap;}
.pagination .page-status{font-size:13px;color:var(--muted);margin-right:6px;}
.pagination a,.pagination .page-link{
  min-width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:10px;color:var(--text);font-size:14px;font-weight:600;
  background:#fff;transition:.25s;
}
.pagination a:hover,.pagination .page-link:hover{border-color:var(--ice);color:var(--ice);}
.pagination .active,.pagination .page-link.active,.pagination .current,.pagination .on{background:var(--ice-2);color:#fff;border-color:var(--ice-2);}
.pagination .disabled,.pagination .page-link.disabled{opacity:.4;cursor:not-allowed;pointer-events:none;}

/* ---------- 详情页 ---------- */
.detail-page{max-width:880px;margin:0 auto;}
.detail-page .detail-hero{margin-bottom:34px;}
.detail-page .detail-hero img{width:100%;border-radius:var(--radius);box-shadow:var(--shadow);}
.detail-page .detail-title{font-size:30px;font-weight:700;color:var(--ink);margin:22px 0 12px;}
.detail-page h3{font-size:22px;font-weight:700;color:var(--ink);margin:30px 0 12px;}
.detail-page h4{font-size:18px;font-weight:700;color:var(--ink);margin:22px 0 10px;}
.detail-page p{color:var(--muted);margin-bottom:14px;}
.detail-page ul.feature-list{margin:10px 0 18px;}
.detail-page ul.feature-list li{position:relative;padding-left:22px;color:var(--text);font-size:15px;margin-bottom:9px;}
.detail-page ul.feature-list li::before{content:"";position:absolute;left:0;top:10px;width:9px;height:9px;border-radius:50%;background:var(--ice-2);}
.meta-note{margin-top:2px;padding:16px 18px;background:var(--bg-soft);border-left:3px solid var(--ice-2);border-radius:8px;color:var(--muted);font-size:13px;}

/* ---------- 联系我们 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:stretch;}
.contact-info{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column;box-shadow:var(--shadow);}
.contact-info .ci-item{display:flex;gap:16px;padding:16px 2px;}
.contact-info .ci-item + .ci-item{border-top:1px dashed var(--line);}
.contact-info .ci-icon{width:46px;height:46px;flex-shrink:0;border-radius:10px;background:var(--ink);color:var(--ice);display:flex;align-items:center;justify-content:center;}
.contact-info h4{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:4px;}
.contact-info p{color:var(--muted);font-size:14px;line-height:1.6;}
.ci-scope{margin-top:auto;padding-top:22px;border-top:1px solid var(--line);}
.ci-scope-title{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px;}
.ci-list{list-style:none;display:grid;grid-template-columns:1fr;gap:22px;margin:0;padding:0;}
.ci-list li{font-size:13.5px;color:var(--text);position:relative;padding-left:16px;line-height:1.5;}
.ci-list li::before{content:"";position:absolute;left:0;top:7px;width:6px;height:6px;border-radius:50%;background:var(--ice-2);}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);}
.form-card h3{font-size:20px;font-weight:700;color:var(--ink);margin-bottom:20px;}
.form-group{margin-bottom:18px;}
.form-group label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px;}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:10px;font-family:var(--font);
  font-size:15px;color:var(--text);background:#fff;transition:.2s;outline:none;
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--ice-2);box-shadow:0 0 0 3px rgba(59,130,246,.12);}
.form-group textarea{min-height:120px;resize:vertical;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--silver);padding:64px 0 0;border-top:3px solid var(--ice-2);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr auto;gap:36px;padding-bottom:40px;}
.footer-logo{width:auto;height:40px;margin-bottom:16px;filter:brightness(0) invert(1);}
.footer-slogan{color:#fff;font-size:17px;font-weight:700;margin-bottom:8px;}
.footer-desc{color:var(--silver);font-size:14px;max-width:280px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:1px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{color:var(--silver);font-size:14px;transition:.2s;}
.footer-col ul a:hover{color:var(--ice);}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;color:var(--silver);font-size:14px;}
.footer-contact svg{margin-top:3px;color:var(--ice);flex-shrink:0;}
.footer-contact a:hover{color:var(--ice);}
.footer-bottom{border-top:1px solid var(--line-dark);padding:20px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;}
.footer-bottom p{font-size:13px;color:var(--silver);}
.footer-tagline{letter-spacing:1px;}
.footer-qr h4{margin-bottom:16px;}
.qr-box{width:118px;height:118px;background:#fff;border-radius:10px;padding:7px;box-sizing:border-box;}
.qr-box img{width:100%;height:100%;object-fit:contain;display:block;border-radius:4px;}
.footer-qr .qr-tip{color:var(--silver);font-size:12px;margin-top:12px;line-height:1.5;}

/* ---------- 预览页提示条 ---------- */
.preview-bar{background:#fff3cd;color:#7a5b00;text-align:center;font-size:13px;padding:10px 16px;border-bottom:1px solid #ffe08a;margin-top:74px;}

/* ---------- 贵金属贸易横幅 ---------- */
.precious-banner{
  position:relative;text-align:center;color:#fff;overflow:hidden;
  background:linear-gradient(180deg,var(--ink-2) 0%,#0b1017 55%,var(--ink-2) 100%);
  padding:90px 0;
}
.precious-banner::before,.precious-banner::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  width:720px;height:300px;background:radial-gradient(closest-side,rgba(90,167,255,.16),transparent);pointer-events:none;
}
.precious-banner::before{top:-140px;}
.precious-banner::after{bottom:-140px;background:radial-gradient(closest-side,rgba(90,167,255,.10),transparent);}
.precious-banner .container{position:relative;z-index:1;}
.pb-eyebrow{color:var(--ice);font-size:13px;letter-spacing:4px;text-transform:uppercase;font-weight:600;margin-bottom:12px;}
.pb-title{font-size:36px;font-weight:700;color:#fff;margin-bottom:34px;letter-spacing:1px;}
.pb-elements{overflow:hidden;white-space:nowrap;margin-bottom:36px;position:relative;}
.pb-track{display:inline-flex;align-items:center;animation:pbScroll 26s linear infinite;will-change:transform;}
.pb-elements:hover .pb-track{animation-play-state:paused;}
@keyframes pbScroll{from{transform:translateX(0);}to{transform:translateX(-50%);}}
.pb-track .pb-sym{margin-right:16px;}
.pb-sym{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:88px;height:72px;padding:0 16px;border-radius:14px;
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.14);
  font-size:36px;font-weight:800;color:var(--silver-2);transition:.25s;
}
.pb-sym:hover{transform:translateY(-5px);border-color:var(--ice);color:#fff;box-shadow:0 14px 30px rgba(0,0,0,.35);}
.pb-desc{color:var(--silver);font-size:16px;line-height:1.9;max-width:840px;margin:0 auto;}

/* ---------- 城市矿山到AI基础设施 ---------- */
.citymine{
  background:linear-gradient(180deg,var(--ink) 0%,var(--ink-2) 100%);
  padding:90px 0;color:#fff;
}
.citymine .section-head h2{color:#fff;}
.citymine .section-head p{color:var(--silver);}
.cm-flow{display:flex;align-items:stretch;justify-content:center;flex-wrap:wrap;gap:16px;margin-top:44px;}
.cm-step{
  flex:1 1 180px;max-width:230px;background:rgba(255,255,255,.05);
  border:1px solid var(--line-dark);border-radius:14px;padding:26px 20px;text-align:center;transition:.25s;
}
.cm-step:hover{transform:translateY(-5px);border-color:var(--ice);box-shadow:0 14px 30px rgba(0,0,0,.3);}
.cm-step .cm-name{color:var(--ice);font-size:14px;letter-spacing:2px;text-transform:uppercase;font-weight:600;margin-bottom:12px;}
.cm-step .cm-desc{color:var(--silver-2);font-size:14px;line-height:1.6;}
.cm-arrow{display:flex;align-items:center;color:var(--ice);font-size:26px;font-weight:700;}

/* ---------- 页底CTA ---------- */
.page-cta{
  position:relative;text-align:center;color:var(--ink);overflow:hidden;
  background:linear-gradient(rgba(255,255,255,.86),rgba(255,255,255,.86)),url('assets/pp.jpg') center/cover no-repeat;
  padding:76px 0;
}
.page-cta::before{
  content:"";position:absolute;top:-120px;left:50%;transform:translateX(-50%);
  width:680px;height:280px;background:radial-gradient(closest-side,rgba(59,130,246,.12),transparent);pointer-events:none;
}
.page-cta .container{position:relative;z-index:1;}
.page-cta h2{color:var(--ink);font-size:32px;font-weight:700;margin-bottom:14px;letter-spacing:.5px;}
.page-cta p{color:var(--muted);font-size:16px;max-width:640px;margin:0 auto 32px;line-height:1.8;}

/* ============================================================
   响应式：平板 / 手机
   ============================================================ */
@media (max-width:1024px){
  .card-grid,.p-product-grid{grid-template-columns:repeat(2,1fr);}
  .tech-grid{gap:16px;}
  .tech-row.r3{grid-template-columns:repeat(2,1fr);}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}

@media (max-width:900px){
  .nav-toggle{display:flex;}
  .site-nav{
    position:fixed;top:74px;left:0;right:0;transform:none;background:#fff;display:block;
    max-height:0;overflow:hidden;transition:max-height .35s ease;box-shadow:0 20px 30px rgba(13,17,23,.12);
  }
  .site-nav .lang-switch{display:none;}
  .site-nav.open{max-height:720px;}
  .nav-list{flex-direction:column;padding:12px 20px 20px;}
  .nav-list a{font-size:16px;padding:13px 12px;border-bottom:1px solid var(--line);border-radius:0;color:var(--text);}
  .nav-list a.active::after{display:none;}
  .nav-list a.active{color:var(--ice);}
  .has-mega .caret{display:none;}
  .has-mega .mega{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;background:transparent;padding:0 0 0 14px;min-width:0;}
  .mega-inner{gap:0;}
  .mega .cat-link{padding:10px 12px;color:var(--text);font-size:15px;font-weight:400;border-bottom:1px solid var(--line);border-radius:0;}
  .mega .cat-link:hover{color:var(--ice);}
  .header-extra{margin-left:auto;}
  .lang-label{display:none;}
  .hero-caption h1{font-size:42px;}
  .hero-caption p{font-size:17px;}
  .section{padding:60px 0;}
  .section-head h2{font-size:28px;}
  .about-grid,.contact-grid{grid-template-columns:1fr;}
  .about-intro{grid-template-columns:1fr;gap:28px;}
  .stage-grid{grid-template-columns:1fr;}
  .vision-grid{grid-template-columns:1fr;}
  .vision-arrow{transform:rotate(90deg);justify-content:center;margin:0;}
  .page-hero h1{font-size:30px;}
  .commit-grid{grid-template-columns:repeat(2,1fr);}
  .news-wrap{grid-template-columns:1fr;}
  .news-list{margin-top:4px;}
}

@media (max-width:600px){
  .card-grid,.p-product-grid,.stat-grid{grid-template-columns:1fr;}
  .pc-top{grid-template-columns:1fr;gap:22px;}
  .pc-grid{grid-template-columns:1fr;}
  .pc-item{padding:14px 16px;}
  .product-layout{grid-template-columns:1fr;}
  .cat-sidebar{position:static;}
  .cat-nav{flex-direction:row;flex-wrap:wrap;}
  .cat-nav a{padding:10px 16px;font-size:13px;}
  .tech-grid{gap:16px;}
  .tech-row{grid-template-columns:1fr;}
  .hero-slider{height:68vh;min-height:420px;}
  .hero-caption h1{font-size:32px;}
  .hero-caption p{font-size:15px;}
  .precious-banner{padding:64px 0;}
  .pb-title{font-size:28px;margin-bottom:26px;}
  .pb-elements{gap:10px;margin-bottom:28px;}
  .pb-sym{min-width:60px;height:52px;font-size:22px;padding:0 10px;border-radius:10px;}
  .pb-desc{font-size:15px;}
  .citymine{padding:64px 0;}
  .cm-flow{gap:10px;margin-top:34px;}
  .cm-step{flex:1 1 44%;max-width:none;}
  .cm-arrow{transform:rotate(90deg);}
  .page-cta{padding:60px 0;}
  .page-cta h2{font-size:24px;margin-bottom:12px;}
  .page-cta p{font-size:15px;margin-bottom:26px;}
  .hero-arrow{display:none;}
  .flow{gap:10px;}
  .flow-step{min-width:120px;flex-basis:46%;max-width:none;padding:20px 12px;}
  .flow-step .step-name{font-size:14px;}
  .flow .arrow{font-size:18px;}
  .flow .step{min-width:120px;flex-basis:46%;max-width:none;padding:20px 12px;}
  .flow .step strong{font-size:14px;}
  .commit-grid{grid-template-columns:1fr;}
  .commit-card{padding:22px 18px;}
  .ci-list{grid-template-columns:1fr;}
  .news-feature .nf-body{padding:20px;}
  .news-feature h4{font-size:19px;}
  .np-item{flex-direction:column;}
  .np-item .np-thumb{width:100%;height:auto;aspect-ratio:16/9;}
  .np-item h4{font-size:17px;}
  .pagination{gap:6px;margin-top:34px;}
  .pagination .page-link{min-width:38px;height:38px;font-size:13px;}
  .footer-grid{grid-template-columns:1fr;}
  .news-item{flex-direction:column;align-items:flex-start;}
  .news-item .n-date{display:flex;align-items:center;gap:8px;width:auto;}
  .footer-bottom{flex-direction:column;text-align:center;}
  .data-table td:first-child{width:42%;}
  .brand-text small{display:none;}
  .brand-logo{height:34px;width:auto;}
}
.back-top{
  position:fixed;right:24px;bottom:24px;z-index:999;width:46px;height:46px;border:none;cursor:pointer;
  border-radius:12px;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);transition:.25s;box-shadow:0 8px 20px rgba(13,17,23,.25);
}
.back-top.show{opacity:1;visibility:visible;transform:none;}
.back-top:hover{background:var(--ice-2);}
.back-top svg{width:20px;height:20px;}
@media (max-width:600px){.back-top{right:16px;bottom:16px;width:42px;height:42px;}}

/* 详情页上一篇/下一篇 */
.detail-pager{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;margin-top:42px;padding-top:22px;border-top:1px solid var(--line);}
.dp-link{flex:1;min-width:0;padding:14px 18px;border-radius:10px;background:var(--bg-soft);color:var(--text);font-size:13.5px;line-height:1.6;transition:.2s;}
.dp-link:hover{background:rgba(59,130,246,.09);color:var(--ice-2);}
.dp-link.dp-next{text-align:right;}
@media (max-width:600px){
  .detail-pager{flex-direction:column;}
  .dp-link.dp-next{text-align:left;}
}

/* 新闻页/详情页左右布局 + 侧边栏 */
.news-layout{display:grid;grid-template-columns:250px 1fr;gap:40px;align-items:start;}
.news-side{position:sticky;top:96px;display:flex;flex-direction:column;justify-content:flex-start;gap:14px;}
.news-main{min-width:0;display:flex;flex-direction:column;gap:24px;}
.detail-head{text-align:center;margin-bottom:30px;}
.detail-title{font-size:26px;font-weight:700;color:var(--ink);line-height:1.5;margin:0;}
.detail-date{display:inline-block;margin-top:12px;color:var(--muted);font-size:13px;}
.detail-thumb{margin-top:22px;}
.detail-thumb img{width:100%;max-width:760px;margin:0 auto;display:block;border-radius:14px;object-fit:cover;aspect-ratio:16/9;}
/* 侧边栏热门新闻/热门产品：卡片式列表 */
.news-side .cat-hot-list{display:flex;flex-direction:column;gap:6px;list-style:none;margin:0;padding:0;}
.news-side .cat-hot-list li{margin:0;}
.news-side .cat-hot-list li a{
  display:flex;align-items:flex-start;gap:8px;padding:9px 11px;border-radius:9px;
  background:var(--bg-soft);color:var(--text);font-size:13px;line-height:1.5;transition:.2s;
}
.news-side .cat-hot-list li a::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--ice);flex-shrink:0;margin-top:6px;
}
.news-side .cat-hot-list li a:hover{background:rgba(59,130,246,.1);color:var(--ice-2);}
.news-side .cat-hot-list li a:hover::before{background:var(--ice-2);}
@media (max-width:600px){
  .news-layout{grid-template-columns:1fr;}
  .news-side{position:static;}
  .detail-title{font-size:22px;}
}

/* 我们的业务板块 */
.business-list{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.biz-item{display:flex;flex-direction:column;justify-content:flex-start;height:100%;min-height:320px;padding:28px 24px;border-radius:var(--radius);color:#fff;position:relative;overflow:hidden;background-size:cover;background-position:center;transition:.3s;}
.biz-item::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,17,28,.18),rgba(10,17,28,.93));}
.biz-item>*{position:relative;z-index:1;}
.biz-item:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(0,0,0,.28);}
.biz-num{font-size:44px;font-weight:800;color:var(--ice);line-height:1;margin-bottom:16px;}
.biz-body{flex:none;}
.biz-head{display:flex;flex-direction:column;align-items:flex-start;gap:5px;margin-bottom:14px;}
.biz-head h4{font-size:21px;font-weight:700;color:#fff;margin:0;}
.biz-en{font-size:11px;font-weight:600;letter-spacing:2px;color:var(--ice);text-transform:uppercase;}
.biz-body p{font-size:13.5px;color:rgba(255,255,255,.82);line-height:1.8;margin:0;max-width:none;}
/* 业务模块 */
.business-bg{background:var(--bg-soft);}
.business-bg .section-head h2{color:var(--ink);}
.business-bg .section-head>p:last-child{color:var(--muted);}
.business-bg .eyebrow{color:var(--ice-2);}
@media (max-width:900px){
  .business-list{grid-template-columns:1fr;}
}
@media (max-width:600px){
  .biz-item{min-height:260px;padding:22px 18px;}
  .biz-num{font-size:38px;}
  .biz-head h4{font-size:19px;}
}


/* ---------- 材料循环链（ESG） ---------- */
.cycle-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:8px;}
.cycle-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.3s;}
.cycle-card:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:var(--ice);}
.cc-media{height:150px;background-size:cover;background-position:center;position:relative;}
.cc-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,17,23,0),rgba(13,17,23,.18));}
.cc-body{padding:22px 22px 24px;}
.cc-body h4{font-size:18px;font-weight:700;margin-bottom:14px;color:var(--ink);}
.cc-chain{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:14px;}
.cc-node{font-size:11.5px;font-weight:600;color:var(--ice-2);background:var(--bg-soft);border:1px solid var(--line);border-radius:8px;padding:7px 9px;letter-spacing:.3px;line-height:1.3;}
.cc-node:last-child{color:var(--ink);border-color:var(--ice);background:#eef4ff;font-weight:700;}
.cc-arrow{color:var(--ice-2);font-size:14px;font-weight:700;}
.cc-body p{font-size:13.5px;color:var(--muted);line-height:1.7;margin:0;}
@media (max-width:768px){.cycle-grid{grid-template-columns:1fr;}.cc-media{height:120px;}}

/* 五大绿色技术平台 - 大背景图 */
.section.tech-bg{background:linear-gradient(rgba(13,17,23,.82),rgba(13,17,23,.82)),url('assets/cd.jpg') center/cover no-repeat;}

/* 详情页：日期 / 上一篇下一篇 */
.detail-date{font-size:13px;color:var(--muted,#8a93a3);margin-bottom:10px;letter-spacing:.5px;}
.detail-content h3{font-size:20px;font-weight:700;margin:28px 0 12px;padding-left:12px;border-left:3px solid var(--ice-2);}
.detail-content p{color:var(--body,#3a4252);line-height:1.85;margin:10px 0;}
.detail-content ul{margin:10px 0 10px 20px;line-height:1.9;}
.detail-content ul li{list-style:disc;}
.detail-content table{margin:14px 0;}
.prev-next{display:flex;justify-content:space-between;gap:16px;margin-top:36px;padding-top:18px;border-top:1px solid var(--line,#e5e9f0);flex-wrap:wrap;}
.prev-next a{flex:1;min-width:240px;padding:12px 18px;background:var(--bg-soft,#f4f6f9);border-radius:8px;font-size:14px;color:var(--ink,#0d1117);transition:all .2s;}
.prev-next a:hover{background:var(--ice-2,#3b82f6);color:#fff;}
.prev-next .next{text-align:right;}

/* 详情页：上图下文改为左右布局 */
.detail-top{display:grid;grid-template-columns:1fr 1.2fr;gap:36px;align-items:start;margin-bottom:32px;}
.detail-top .detail-hero{border-radius:12px;overflow:hidden;background:#fafbfc;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;}
.detail-top .detail-hero img{width:100%;height:100%;object-fit:contain;padding:14px;}
.detail-top .detail-intro{padding-top:4px;}
.detail-top .detail-title{margin:6px 0 14px;font-size:30px;}
.detail-top .detail-intro p{color:var(--body,#3a4252);line-height:1.85;}
@media (max-width:900px){.detail-top{grid-template-columns:1fr;gap:20px;}}

/* 详情页按钮组 + 询价弹窗 */
.detail-actions{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap;}
.btn-outline{display:inline-flex;align-items:center;padding:12px 26px;border:1.5px solid var(--ice-2,#3b82f6);color:var(--ice-2,#3b82f6);border-radius:8px;font-size:15px;font-weight:600;transition:.2s;text-decoration:none;}
.btn-outline:hover{background:var(--ice-2,#3b82f6);color:#fff;}
.modal-mask{position:fixed;inset:0;background:rgba(13,17,23,.55);display:none;align-items:center;justify-content:center;z-index:999;padding:20px;}
.modal-mask.show{display:flex;}
.modal-box{background:#fff;border-radius:14px;padding:32px;max-width:440px;width:100%;position:relative;box-shadow:0 20px 60px rgba(0,0,0,.2);box-sizing:border-box;}
.modal-close{position:absolute;top:12px;right:18px;font-size:26px;cursor:pointer;color:#8a93a3;line-height:1;}
.modal-close:hover{color:#0d1117;}
.modal-box h3{font-size:22px;font-weight:700;margin-bottom:6px;color:#0d1117;}
.modal-sub{color:#8a93a3;font-size:14px;margin-bottom:20px;}
.modal-box input,.modal-box textarea{width:100%;padding:11px 14px;border:1px solid #e5e9f0;border-radius:8px;font-size:14px;margin-bottom:12px;font-family:inherit;box-sizing:border-box;}
.modal-box input:focus,.modal-box textarea:focus{outline:none;border-color:#3b82f6;}
.modal-box textarea{resize:vertical;}

/* 联系我们页：二维码 */
.ci-qr{margin-top:28px;padding-top:24px;border-top:1px dashed var(--line,#e5e9f0);text-align:center;}
.qr-img-wrap{width:160px;height:160px;margin:14px auto 10px;background:#fff;border:1px solid var(--line,#e5e9f0);border-radius:10px;padding:10px;box-sizing:border-box;}
.qr-img-wrap img{width:100%;height:100%;object-fit:contain;display:block;}
.ci-qr p{font-size:13px;color:var(--muted,#8a93a3);margin-top:6px;}

/* 联系我们页：业务合作范围两列 + 二维码缩小 */
.ci-list{display:grid;grid-template-columns:1fr 1fr;gap:8px 14px;}
.ci-list li{break-inside:avoid;}
.qr-img-wrap{width:120px;height:120px;}

/* 联系我们页：业务范围+二维码 左右布局 */
.ci-bottom{display:flex;gap:28px;align-items:flex-start;margin-top:20px;padding-top:24px;border-top:1px dashed var(--line,#e5e9f0);}
.ci-bottom .ci-scope{flex:1;}
.ci-bottom .ci-scope{margin-top:0;padding-top:0;border-top:none;}
.ci-list{display:block;}
.ci-list li{margin-bottom:10px;}
.ci-bottom .ci-qr{width:160px;flex-shrink:0;text-align:center;margin-top:0;padding-top:0;border-top:none;}
.ci-bottom .qr-img-wrap{margin:10px auto 8px;}
@media (max-width:768px){.ci-bottom{flex-direction:column;}.ci-bottom .ci-qr{width:100%;}}

/* 联系我们页：二维码模块内部左右（文字左 二维码右） */
.ci-bottom{display:block !important;}
.ci-qr{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:24px;padding-top:20px;border-top:1px dashed var(--line,#e5e9f0);text-align:left;}
.ci-qr-text h4{margin-bottom:6px;}
.ci-qr-text p{font-size:13px;color:var(--muted,#8a93a3);line-height:1.7;}
.ci-qr .qr-img-wrap{width:110px;height:110px;margin:0;flex-shrink:0;}
@media (max-width:768px){.ci-qr{flex-direction:column;text-align:center;}.ci-qr .qr-img-wrap{margin-top:10px;}}

/* 业务合作范围：两列 + 行间距加大 */
.ci-list{display:grid;grid-template-columns:1fr 1fr;gap:16px 18px;}
.ci-list li{margin-bottom:0;line-height:1.6;}