/* ===== 深圳研算科技官网样式 ===== */
:root{
  --bg:#ffffff;
  --bg-dark:#0d0722;          /* 深紫腔体底（光刻真空感） */
  --bg-darker:#08041a;
  --bg-soft:#f7f5fd;
  --bg-card:#f0ecfb;
  --blue:#7c3aed;             /* 紫罗兰主色（白字对比 5.7:1 达标） */
  --blue2:#a855f7;            /* 亮紫激光（渐变 / 深底高亮） */
  --blue-deep:#5b21b6;        /* hover 深紫 */
  --org:#e8b23a;              /* 琥珀金（电路走线：编号 / 图形） */
  --org-deep:#c8912a;         /* 深琥珀（浅底小字可读） */
  --ink:#171233;
  --ink2:#54496e;
  --muted:#5f5679;
  --line:#e6e0f2;
  --line2:#d8cef0;
  --radius:14px;
  --shadow:0 8px 30px rgba(45,20,90,.09);
  --shadow-lg:0 18px 50px rgba(45,20,90,.18);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:15px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:.2s}
ul{list-style:none}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== 通用按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:13px 30px;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;
  border:2px solid transparent;transition:.25s;white-space:nowrap;
}
.btn-primary{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--blue2),var(--blue));color:#fff}
.btn-primary:hover{background:linear-gradient(135deg,var(--blue),var(--blue-deep));transform:translateY(-2px);box-shadow:0 10px 28px rgba(168,85,247,.5)}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.5);backdrop-filter:blur(4px)}
.btn-ghost:hover{background:#fff;color:var(--blue)}
.btn-outline{background:transparent;color:#fff;border-color:#fff}
.btn-outline:hover{background:#fff;color:var(--blue)}
.btn-block{width:100%}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:3px;text-transform:uppercase;
  color:var(--org-deep);font-weight:700;margin-bottom:10px;
}
.eyebrow.light{color:var(--blue2)}

/* ===== 顶部条 ===== */
.topbar{background:var(--bg-darker);color:#9fb3d1;font-size:12.5px;padding:8px 0}
.topbar-inner{display:flex;justify-content:space-between;align-items:center}
.topbar a{color:#cfe0f7}
.topbar a:hover{color:#fff}
.topbar-right a{margin-left:18px}

/* ===== 导航 ===== */
.header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:.3s;
}
.header.scrolled{box-shadow:0 4px 20px rgba(7,26,51,.06)}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.logo{display:flex;align-items:center;gap:11px}
.logo-mark{
  width:42px;height:42px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--blue),var(--blue-deep));
  color:#fff;font-weight:800;font-size:17px;letter-spacing:-1px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(124,58,237,.35);
}
.logo-img{width:42px;height:42px;flex-shrink:0;display:block}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text strong{font-size:19px;color:var(--bg-dark);letter-spacing:.5px}
.logo-text em{font-style:normal;font-size:10px;color:var(--muted);letter-spacing:2px}
.logo-light .logo-text strong{color:#fff}
.logo-light .logo-text em{color:#9fb3d1}
.menu{display:flex;gap:6px}
.menu a{
  padding:8px 16px;border-radius:8px;font-size:15px;color:var(--ink);
  font-weight:500;position:relative;
}
.menu a:hover{color:var(--blue);background:var(--bg-soft)}
.menu a.active{color:#fff;background:linear-gradient(135deg,var(--blue),var(--blue-deep))}
.menu-btn{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.menu-btn span{width:24px;height:2px;background:var(--bg-dark);border-radius:2px;transition:.3s}

/* ===== Banner ===== */
.banner{position:relative;overflow:hidden;color:#fff;padding:90px 0 70px;background:linear-gradient(rgba(167,139,250,.09) 1px,transparent 1px) 0 0/100% 38px,linear-gradient(90deg,rgba(167,139,250,.09) 1px,transparent 1px) 0 0/38px 100%,radial-gradient(880px 440px at 18% 12%,rgba(139,92,246,.28),transparent 62%),radial-gradient(620px 340px at 88% 86%,rgba(232,178,58,.13),transparent 60%),var(--bg-darker)}
.banner-bg{
  position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(900px 500px at 82% 20%,rgba(124,58,237,.35),transparent 60%),
    radial-gradient(700px 500px at 15% 85%,rgba(59,155,255,.18),transparent 60%),
    linear-gradient(135deg,#0d0722 0%,#170b33 50%,#08041a 100%);
}
.banner-bg::before{
  content:"";position:absolute;inset:0;opacity:.18;
  background-image:linear-gradient(rgba(167,139,250,.16) 1px,transparent 1px),linear-gradient(90deg,rgba(167,139,250,.16) 1px,transparent 1px);
  background-size:52px 52px;mask-image:radial-gradient(circle at 50% 50%,#000,transparent 75%);
}
.banner-bg::after{
  content:"";position:absolute;width:520px;height:520px;border-radius:50%;right:-160px;top:-120px;
  background:radial-gradient(circle,rgba(124,58,237,.5),transparent 70%);
  filter:blur(20px);
}
.banner-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.3fr 1fr;gap:60px;align-items:center}
.banner-tag{
  display:inline-block;font-size:13px;letter-spacing:2px;color:#9fd0ff;
  border:1px solid rgba(159,208,255,.4);border-radius:30px;padding:6px 16px;margin-bottom:22px;
}
.banner h1{font-size:52px;line-height:1.18;font-weight:800;letter-spacing:-.5px;margin-bottom:22px}
.banner-desc{font-size:16.5px;color:#bcd3f0;max-width:560px;margin-bottom:32px}
.banner-btns{display:flex;gap:14px;flex-wrap:wrap}
.banner-stats{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.14);border-radius:16px;overflow:hidden}
.stat{background:rgba(7,26,51,.55);padding:26px 22px;backdrop-filter:blur(6px)}
.stat b{display:block;font-size:38px;font-weight:800;color:#fff;line-height:1.1;font-variant-numeric:tabular-nums}
.stat span{font-size:13px;color:#a8c4e8}

/* ===== 通用 section ===== */
.section{padding:90px 0}
.section-dark{background:var(--bg-dark);color:#fff}
.section-head{text-align:center;max-width:680px;margin:0 auto 56px}
.section-head h2{font-size:34px;font-weight:800;letter-spacing:-.5px;margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16px}
.section-head.light h2{color:#fff}
.section-head.light p{color:#a8c4e8}

/* ===== 产品卡 ===== */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.product-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);
  padding:36px 30px;transition:.3s;position:relative;overflow:hidden;
}
.product-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--blue),var(--blue2));transform:scaleX(0);transform-origin:left;transition:.4s;
}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.product-card:hover::before{transform:scaleX(1)}
.product-icon{font-size:40px;margin-bottom:18px;width:66px;height:66px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#f3ecfe,#e6dbfd);}
.product-card h3{font-size:20px;margin-bottom:10px;font-weight:700}
.product-card p{color:var(--muted);font-size:14.5px;margin-bottom:16px}
.card-more{color:var(--blue);font-size:14px;font-weight:600}

/* ===== 特性 ===== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.feature{
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius);padding:32px 28px;transition:.3s;
}
.feature:hover{background:rgba(255,255,255,.08);transform:translateY(-4px)}
.feature-num{font-size:13px;font-weight:800;color:var(--org);letter-spacing:2px;margin-bottom:12px}
.feature h4{font-size:18px;margin-bottom:8px;color:#fff}
.feature p{color:#9fb3d1;font-size:14.5px}

/* ===== 应用场景 ===== */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.scene{
  border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  display:flex;flex-direction:column;gap:8px;transition:.3s;background:#fff;
}
.scene:hover{border-color:var(--blue);box-shadow:var(--shadow);transform:translateY(-4px)}
.scene-ic{font-size:32px;margin-bottom:6px}
.scene h5{font-size:17px}
.scene p{color:var(--muted);font-size:14px}

/* ===== 关于简述 ===== */
.about-brief{background:var(--bg-soft)}
.about-brief-inner{display:grid;grid-template-columns:1.1fr 1fr;gap:60px;align-items:center}
.about-text h2{font-size:32px;font-weight:800;margin:6px 0 18px}
.about-text p{color:var(--muted);font-size:16px;margin-bottom:26px;max-width:560px}
.about-data{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.about-data div{text-align:center}
.about-data b{display:block;font-size:34px;font-weight:800;color:var(--org-deep)}
.about-data span{font-size:13px;color:var(--muted)}
.about-data-inline{margin-top:32px}

/* ===== 咨询条 ===== */
.cta{position:relative;overflow:hidden;background:linear-gradient(rgba(167,139,250,.08) 1px,transparent 1px) 0 0/100% 32px,linear-gradient(90deg,rgba(167,139,250,.08) 1px,transparent 1px) 0 0/32px 100%,radial-gradient(760px 320px at 22% 50%,rgba(139,92,246,.26),transparent 66%),linear-gradient(135deg,#170b33,#0d0722);color:#fff;padding:56px 0}
.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}
.cta h3{font-size:26px;font-weight:800;margin-bottom:8px}
.cta p{color:#a9c6e8}

/* ===== 页头 ===== */
.page-head{
  background:linear-gradient(135deg,#0d0722,#170b33);color:#fff;padding:64px 0;text-align:center;position:relative;overflow:hidden;
}
.page-head::before{
  content:"";position:absolute;inset:0;opacity:.15;
  background-image:linear-gradient(rgba(167,139,250,.16) 1px,transparent 1px),linear-gradient(90deg,rgba(167,139,250,.16) 1px,transparent 1px);
  background-size:56px 56px;mask-image:radial-gradient(circle at 50% 50%,#000,transparent 70%);
}
.page-head .container{position:relative;z-index:2}
.page-head h1{font-size:42px;font-weight:800;margin:6px 0 12px}
.page-head p{color:#a8c4e8;font-size:16px}

/* ===== 标签页 ===== */
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:44px;justify-content:center}
.tab{
  padding:11px 24px;border-radius:30px;border:1px solid var(--line2);background:#fff;
  font-size:15px;font-weight:600;cursor:pointer;color:var(--ink);transition:.25s;
}
.tab:hover{border-color:var(--blue);color:var(--blue)}
.tab.active{background:linear-gradient(135deg,var(--blue),var(--blue-deep));color:#fff;border-color:transparent;box-shadow:0 6px 18px rgba(124,58,237,.3)}
.tab-panel{display:none;animation:fade .4s ease}
.tab-panel.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.panel-intro{text-align:center;max-width:720px;margin:0 auto 40px}
.panel-intro h2{font-size:28px;font-weight:800;margin-bottom:10px}
.panel-intro p{color:var(--muted);font-size:16px}

/* ===== 产品卡 ===== */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.prod{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;
  transition:.3s;display:flex;flex-direction:column;
}
.prod:hover{box-shadow:var(--shadow-lg);transform:translateY(-5px);border-color:transparent}
.prod-img{
  height:170px;display:flex;align-items:center;justify-content:center;font-size:60px;
  background:linear-gradient(135deg,#f6f1fe,#ece2fd);
}
.prod-body{padding:24px;flex:1;display:flex;flex-direction:column}
.prod-cat{font-size:12px;color:var(--blue);font-weight:700;letter-spacing:1px;margin-bottom:8px}
.prod-body h4{font-size:18px;margin-bottom:8px}
.prod-body p{color:var(--muted);font-size:14px;margin-bottom:14px;flex:1}
.prod-body ul{display:flex;flex-wrap:wrap;gap:8px}
.prod-body li{font-size:12.5px;color:var(--ink2);background:var(--bg-card);border-radius:6px;padding:4px 10px}

/* ===== 定制 ===== */
.custom-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.custom-item{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;transition:.3s;border-left:4px solid var(--blue);
}
.custom-item:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.custom-item h5{font-size:17px;margin-bottom:6px}
.custom-item p{color:var(--muted);font-size:14px}

/* ===== 方案 ===== */
.sol-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
/* 两列栅格：图标固定左侧，标题 / 描述 / 标签在右侧纵向排列 */
.sol{
  border:1px solid var(--line);border-radius:var(--radius);padding:32px;background:#fff;
  transition:.3s;display:grid;grid-template-columns:auto 1fr;column-gap:20px;align-items:start;
}
.sol:hover{border-color:var(--blue);box-shadow:var(--shadow);transform:translateY(-4px)}
.sol-ic{grid-column:1;grid-row:1 / -1;font-size:34px;width:64px;height:64px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#f3ecfe,#e6dbfd)}
.sol h3{grid-column:2;font-size:19px;margin-bottom:8px;line-height:1.5}
.sol p{grid-column:2;color:var(--muted);font-size:14.5px;margin-bottom:12px;line-height:1.8}
.sol ul{grid-column:2;display:flex;flex-wrap:wrap;gap:8px}
.sol li{font-size:12.5px;background:var(--bg-card);border-radius:6px;padding:4px 10px;color:var(--ink2)}

/* ===== 关于页 ===== */
.about-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:60px}
.about-grid h2{font-size:30px;font-weight:800;margin:6px 0 18px}
.about-grid>p{color:var(--muted);font-size:16px;margin-bottom:14px}
.about-side{display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.side-card h5{font-size:17px;margin-bottom:8px;color:var(--blue)}
.side-card p{color:var(--muted);font-size:14.5px}

/* ===== 时间线 ===== */
.timeline{position:relative;max-width:860px;margin:0 auto;padding-left:10px}
.timeline::before{content:"";position:absolute;left:10px;top:8px;bottom:8px;width:2px;background:linear-gradient(var(--blue),var(--blue2))}
.tl-item{position:relative;padding-left:44px;padding-bottom:34px}
.tl-item::before{content:"";position:absolute;left:4px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 4px rgba(124,58,237,.18)}
.tl-year{display:inline-block;font-size:13px;font-weight:800;color:#fff;background:var(--blue);border-radius:6px;padding:3px 12px;margin-bottom:8px}
.tl-item h5{font-size:17px;margin-bottom:4px}
.tl-item p{color:var(--muted);font-size:14.5px}

/* ===== 新闻 ===== */
.news-cats{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:40px}
.chip{padding:8px 20px;border-radius:30px;border:1px solid var(--line2);background:#fff;font-size:14px;cursor:pointer;transition:.2s}
.chip.active,.chip:hover{background:var(--blue);color:#fff;border-color:var(--blue)}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news{display:flex;gap:20px;border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:#fff;transition:.3s}
.news:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:var(--blue)}
.news-date{text-align:center;flex-shrink:0;width:62px;background:var(--bg-soft);border-radius:10px;padding:10px 6px}
.news-date b{display:block;font-size:26px;font-weight:800;color:var(--blue);line-height:1}
.news-date span{font-size:11px;color:var(--muted)}
.news-cat{font-size:11.5px;color:var(--blue);font-weight:700;letter-spacing:1px}
.news-body h4{font-size:17px;margin:6px 0 8px;line-height:1.5}
.news-body p{color:var(--muted);font-size:14px;margin-bottom:10px}
.news-body a{font-size:13.5px;color:var(--blue);font-weight:600}

/* ===== 联系 ===== */
.contact-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:50px}
.contact-form{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:34px}
.contact-form h3{font-size:22px;margin-bottom:24px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.contact-form input,.contact-form select,.contact-form textarea{
  width:100%;padding:13px 16px;border:1px solid var(--line2);border-radius:9px;
  font-size:15px;font-family:inherit;background:#fff;color:var(--ink);transition:.2s;margin-bottom:14px;
}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(124,58,237,.12)}
.form-tip{font-size:12.5px;color:var(--muted);margin-top:14px;text-align:center}
.contact-info h3{font-size:22px;margin-bottom:24px}
.info-item{display:flex;gap:16px;margin-bottom:22px}
.info-ic{font-size:22px;width:46px;height:46px;border-radius:12px;flex-shrink:0;background:var(--bg-soft);display:flex;align-items:center;justify-content:center}
.info-item h6{font-size:13px;color:var(--muted);font-weight:500;margin-bottom:2px}
.info-item p{font-size:15.5px;font-weight:600}
.info-item a:hover{color:var(--blue)}
.qr-placeholder{display:flex;gap:16px}
.qr-box{
  width:130px;height:130px;border:2px dashed var(--line2);border-radius:12px;
  display:flex;align-items:center;justify-content:center;text-align:center;
  color:var(--muted);font-size:13px;line-height:1.7;
}
.map-placeholder{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);height:340px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;color:#9fb3d1;text-align:center;
}
.map-placeholder span{font-size:18px;margin-bottom:8px;color:#fff}

/* ===== 页脚 ===== */
.footer{background:var(--bg-darker);color:#9fb3d1;padding-top:60px}
.footer-inner{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-addr{margin-top:18px;font-size:14px;line-height:1.9}
.footer-addr a{color:#cfe0f7}
.footer-col h6{color:#fff;font-size:15px;margin-bottom:18px;font-weight:700}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a:hover{color:#fff;padding-left:4px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 24px;
  display:flex;justify-content:space-between;font-size:13px;flex-wrap:wrap;gap:10px;
}

/* ===== 面包屑导航（SEO 内链结构） ===== */
.crumbs{background:var(--bg-soft);border-bottom:1px solid var(--line);font-size:13px;padding:12px 0}
.crumbs .container{display:flex;flex-wrap:wrap;align-items:center;gap:6px;color:var(--muted)}
.crumbs a{color:var(--ink2)}
.crumbs a:hover{color:var(--blue)}
.crumbs .sep{color:#b9c6d6;margin:0 2px}
.crumbs strong{color:var(--blue);font-weight:600}

/* ===== 内容详情页 ===== */
.detail-wrap{display:grid;grid-template-columns:1fr 320px;gap:44px;align-items:start}
.detail-main{min-width:0}
.detail-head{margin-bottom:22px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.detail-head h1{font-size:30px;font-weight:800;line-height:1.35;margin:6px 0 10px}
.detail-sub{color:var(--muted);font-size:16px}
.detail-pic{
  height:280px;display:flex;align-items:center;justify-content:center;font-size:96px;
  background:linear-gradient(135deg,#f6f1fe,#ece2fd);border-radius:var(--radius);margin-bottom:26px;
}
.article{font-size:16px;line-height:1.95;color:#33415a}
.article h2{font-size:24px;margin:28px 0 14px;font-weight:800;color:var(--ink)}
.article h3{font-size:20px;margin:24px 0 12px;font-weight:700;color:var(--ink);padding-left:12px;border-left:4px solid var(--blue)}
.article p{margin-bottom:16px}
.article ul,.article ol{margin:0 0 18px 22px;list-style:disc}
.article ol{list-style:decimal}
.article li{margin-bottom:8px}
.article img{border-radius:10px;margin:12px 0}
.article blockquote{
  border-left:4px solid var(--blue);background:var(--bg-soft);padding:14px 18px;margin:16px 0;
  border-radius:0 10px 10px 0;color:var(--ink2);
}
.article a{color:var(--blue);text-decoration:underline}
.article-head{margin-bottom:20px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.article-head h1{font-size:32px;font-weight:800;line-height:1.4;margin:8px 0 12px}
.article-meta{font-size:13px;color:var(--muted)}
.article-tags{margin-top:22px;font-size:13.5px;color:var(--muted);background:var(--bg-soft);border-radius:10px;padding:12px 16px}
.spec-box{margin-top:30px;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.spec-box h3{font-size:19px;margin-bottom:14px;font-weight:700}
.spec-box ul{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 20px}
.spec-box li{position:relative;padding-left:20px;color:var(--ink2);font-size:15px}
.spec-box li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--blue)}
.prev-next{display:flex;flex-direction:column;gap:8px;margin-top:28px;padding-top:20px;border-top:1px dashed var(--line2);font-size:14px;color:var(--muted)}
.prev-next a{color:var(--ink2)}
.prev-next a:hover{color:var(--blue)}

/* ===== 详情页侧栏 ===== */
.detail-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:92px}
.side-list li{margin-bottom:10px;font-size:14px;line-height:1.6}
.side-list li::before{content:"·";color:var(--blue);margin-right:6px;font-weight:800}
.side-list a{color:var(--ink2)}
.side-list a:hover{color:var(--blue)}
.sol-ic.big{font-size:52px;width:88px;height:88px;margin:0 auto 16px}

/* ===== 前台小按钮 ===== */
.btn-a{display:inline-block;padding:9px 18px;border-radius:8px;background:var(--blue);color:#fff;font-size:14px;font-weight:600}
.btn-a:hover{background:var(--blue-deep);color:#fff}
.btn-b{display:inline-block;padding:9px 18px;border-radius:8px;border:1px solid var(--line2);color:var(--ink2);font-size:14px;font-weight:600;background:#fff}
.btn-b:hover{border-color:var(--blue);color:var(--blue)}

/* ===== 网站地图页 ===== */
.smap-box{margin-bottom:34px}
.smap-box h3{font-size:19px;margin-bottom:14px;padding-left:12px;border-left:4px solid var(--blue);font-weight:700}
.smap-list{display:grid;grid-template-columns:repeat(3,1fr);gap:10px 24px}
.smap-list li{font-size:14.5px}
.smap-list a{color:var(--ink2);border-bottom:1px dashed transparent}
.smap-list a:hover{color:var(--blue);border-bottom-color:var(--blue)}

/* ===== 响应式 ===== */
@media(max-width:960px){
  .banner-inner{grid-template-columns:1fr;gap:40px}
  .banner h1{font-size:38px}
  .banner-stats{grid-template-columns:repeat(4,1fr)}
  .product-grid,.feature-grid,.scene-grid,.card-grid,.custom-grid{grid-template-columns:repeat(2,1fr)}
  .sol-grid,.news-grid,.about-brief-inner,.about-grid,.contact-grid{grid-template-columns:1fr;gap:36px}
  .detail-wrap{grid-template-columns:1fr;gap:32px}
  .detail-side{position:static}
  .smap-list{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:1fr 1fr}
  .menu{display:none;position:absolute;top:74px;left:0;right:0;flex-direction:column;background:#fff;padding:16px;box-shadow:0 12px 30px rgba(7,26,51,.12);border-top:1px solid var(--line)}
  .menu.open{display:flex}
  .menu-btn{display:flex}
  .section{padding:64px 0}
  .section-head h2,.about-text h2{font-size:27px}
  .page-head h1{font-size:32px}
}
@media(max-width:600px){
  .banner h1{font-size:30px}
  .banner-stats{grid-template-columns:1fr 1fr}
  .product-grid,.feature-grid,.scene-grid,.card-grid,.custom-grid,.sol-grid,.news-grid{grid-template-columns:1fr}
  .sol{grid-template-columns:1fr;padding:24px}
  .sol-ic{grid-column:1;grid-row:auto;margin-bottom:6px}
  .sol h3,.sol p,.sol ul{grid-column:1}
  .form-row{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
  .banner{padding:60px 0 50px}
  .stat b{font-size:30px}
  .container{padding:0 18px}
  .smap-list{grid-template-columns:1fr}
  .spec-box ul{grid-template-columns:1fr}
  .article-head h1,.detail-head h1{font-size:25px}
  .detail-pic{height:200px;font-size:70px}
}

/* ===== 验证码 / 提交成功弹窗 ===== */
.vcode-row{display:flex;gap:12px;align-items:center}
.vcode-row input{flex:1}
.vcode-img{height:46px;flex-shrink:0;border-radius:8px;border:1px solid #e3ebf6;background:#fff;cursor:pointer;display:block}
.cmodal{position:fixed;left:0;top:0;width:100%;height:100%;background:rgba(10,25,45,.55);display:none;align-items:center;justify-content:center;z-index:9999}
.cmodal-box{background:#fff;border-radius:16px;padding:36px 32px;max-width:400px;width:86%;text-align:center;box-shadow:0 20px 60px rgba(10,25,45,.3)}
.cmodal-ic{width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,#a855f7,#7c3aed);color:#fff;font-size:32px;line-height:64px;font-weight:700;margin:0 auto 18px}
.cmodal-box h4{font-size:20px;margin-bottom:10px;color:#0d2244}
.cmodal-box p{color:#5f5679;line-height:1.8;margin-bottom:22px}
.cmodal-count{color:#93a2b5;font-size:12.5px;margin:12px 0 0}

/* ===== 联系我们 · 百度地图 ===== */
.map-wrap{display:grid;grid-template-columns:1fr 340px;gap:28px;align-items:stretch}
.map-frame{width:100%;height:420px;border:0;border-radius:14px;background:#0d2244;display:block}
.map-side{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:30px;display:flex;flex-direction:column;justify-content:center}
.map-side h5{font-size:19px;color:#fff;margin:6px 0 12px}
.map-side p{color:rgba(255,255,255,.72);line-height:1.8;margin-bottom:8px}
.map-coord{font-size:12.5px;color:rgba(255,255,255,.5)!important}
.map-btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}
.map-btns .btn,.map-btns .btn-b{flex:1;text-align:center;min-width:120px}
@media(max-width:900px){.map-wrap{grid-template-columns:1fr}.map-frame{height:320px}}

/* ===== 芯片 / 光刻风格：曝光扫光 ===== */
.btn-primary::after{
  content:'';position:absolute;top:0;left:-60%;width:45%;height:100%;pointer-events:none;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.45),transparent);
  transform:skewX(-22deg);animation:lithoScan 4.2s ease-in-out infinite;
}
@keyframes lithoScan{0%{left:-60%}42%{left:130%}100%{left:130%}}
/* 深色区块标题下的紫光切割线 */
.section-dark .sec-title::after,.banner h1::after{
  content:'';display:block;width:64px;height:3px;margin-top:16px;border-radius:2px;
  background:linear-gradient(90deg,var(--blue2),rgba(232,178,58,.85),transparent);
}

/* ===== 为什么选择研算科技：淡紫芯片微光 ===== */
.why-section{
  position:relative;overflow:hidden;
  background:linear-gradient(165deg,#f9f6fe 0%,#f2ecfd 48%,#ece2fb 100%);
}
.why-section::before{
  content:'';position:absolute;left:0;top:0;width:100%;height:100%;pointer-events:none;
  background:linear-gradient(rgba(124,58,237,.055) 1px,transparent 1px) 0 0/100% 40px,
             linear-gradient(90deg,rgba(124,58,237,.055) 1px,transparent 1px) 0 0/40px 100%;
  -webkit-mask-image:radial-gradient(78% 70% at 50% 42%,#000 20%,transparent 100%);
  mask-image:radial-gradient(78% 70% at 50% 42%,#000 20%,transparent 100%);
}
.why-section::after{
  content:'';position:absolute;width:560px;height:560px;right:-180px;top:-200px;pointer-events:none;
  background:radial-gradient(circle,rgba(168,85,247,.15),transparent 68%);
}
.why-section>.container{position:relative;z-index:1}
.why-section .eyebrow{color:var(--blue)}
.why-section .feature{
  background:rgba(255,255,255,.9);border:1px solid rgba(124,58,237,.14);
  box-shadow:0 6px 22px rgba(124,58,237,.06);
}
.why-section .feature:hover{
  background:#fff;border-color:var(--blue);transform:translateY(-5px);
  box-shadow:0 20px 46px rgba(124,58,237,.18);
}
.why-section .feature-num{
  display:inline-block;padding:4px 12px;border-radius:20px;letter-spacing:2px;
  background:rgba(124,58,237,.1);color:var(--blue);margin-bottom:16px;
}
.why-section .feature h4{color:var(--ink)}
.why-section .feature p{color:var(--muted)}
@media(max-width:900px){
  .why-section::after{width:340px;height:340px;right:-120px;top:-140px}
}

/* ===== 联系页 · 在线客服二维码 ===== */
.qr-row{display:flex;gap:18px;flex-wrap:wrap;margin-top:16px}
.qr-card{flex:1;min-width:118px;max-width:152px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px;text-align:center;box-shadow:0 6px 18px rgba(45,20,90,.06);transition:.3s}
.qr-card:hover{transform:translateY(-3px);border-color:var(--blue);box-shadow:0 14px 32px rgba(124,58,237,.16)}
.qr-card img{width:100%;display:block;border-radius:8px;margin-bottom:8px}
.qr-card span{font-size:12.5px;color:var(--muted);line-height:1.6}

/* ===== 产品图集（多图展示） ===== */
.detail-gallery{margin:0 0 26px}
.gallery-main{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;padding:10px;box-shadow:0 8px 30px rgba(45,20,90,.06)}
.gallery-main img{width:100%;display:block;border-radius:8px}
.gallery-thumbs{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
.gallery-thumbs img{width:88px;height:66px;object-fit:cover;border:1px solid var(--line);border-radius:8px;cursor:pointer;transition:.25s;background:#fff;padding:2px}
.gallery-thumbs img:hover{border-color:var(--blue);transform:translateY(-2px);box-shadow:0 8px 18px rgba(124,58,237,.16)}
@media(max-width:640px){
  .gallery-thumbs img{width:70px;height:54px}
}

/* ===== 产品卡片：上传图片模式 ===== */
.prod-img.has-pic{padding:0;overflow:hidden;background:#fff}
.prod-img.has-pic img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .45s}
.prod:hover .prod-img.has-pic img{transform:scale(1.06)}