/* =====================================================================
   河南SNAB网络科技有限公司 · 首页独立样式 css/index.css
   模块：全屏Hero / 核心优势(Bento) / 快速入口 / 横向彩色时间轴 / 资讯CMS循环 / 联系条
   ===================================================================== */

/* ---------- 1. 全屏 Banner ---------- */
.banner-home{background-image:url('../images/banner-home.jpg')}
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  color:#fff;background-color:#0F1F3D;background-size:cover;background-position:center;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(15,31,61,.94) 0%,rgba(27,58,107,.82) 48%,rgba(37,99,235,.52) 100%);
}
.hero::after{
  content:"";position:absolute;right:-140px;bottom:-160px;width:480px;height:480px;border-radius:50%;
  border:1px solid rgba(255,255,255,.14);
}
.hero>*{position:relative;z-index:2}
.hero-inner{padding:150px 20px 110px;max-width:820px}
.hero-hello{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:#D6E2F6;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);
  padding:8px 18px;border-radius:999px;margin-bottom:26px;
}
.hero-hello svg{width:15px;height:15px;fill:#7DA6E8}
.hero-title{font-size:clamp(36px,5.4vw,62px);color:#fff;line-height:1.28;font-weight:800;margin-bottom:22px}
.hero-title .fw{display:inline-block;opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s cubic-bezier(.22,.9,.3,1)}
.hero-title .fw.wd-in{opacity:1;transform:none}
.hero-sub{font-size:17px;color:#D6E2F6;max-width:660px;line-height:1.9;opacity:0;transform:translateY(22px);transition:all .8s ease .15s}
.hero-sub.sub-in{opacity:1;transform:none}
.hero-btns{display:flex;gap:16px;margin-top:34px;flex-wrap:wrap;opacity:0;transform:translateY(22px);transition:all .8s ease .25s}
.hero-btns.btns-in{opacity:1;transform:none}
.hero-line{border-color:rgba(255,255,255,.6);color:#fff}
.hero-line:hover{background:#fff;border-color:#fff;color:var(--c-primary)}
.hero-metas{display:flex;gap:0;margin-top:52px;flex-wrap:wrap}
.hero-metas div{padding:0 28px;border-left:1px solid rgba(255,255,255,.22)}
.hero-metas div:first-child{padding-left:0;border-left:none}
.hero-metas b{display:block;font-size:30px;font-weight:800;color:#fff;line-height:1.1}
.hero-metas span{font-size:13px;color:#AFC6EC}
.scroll-down{
  position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:3;
  width:26px;height:44px;border:2px solid rgba(255,255,255,.55);border-radius:14px;
}
.scroll-down::after{
  content:"";position:absolute;left:50%;top:8px;width:4px;height:9px;margin-left:-2px;
  border-radius:4px;background:#fff;animation:wheel 1.8s ease-in-out infinite;
}
@keyframes wheel{0%{opacity:1;transform:translateY(0)}100%{opacity:0;transform:translateY(16px)}}

/* ---------- 2. 核心优势（Bento 差异化布局） ---------- */
.adv-sec{background:var(--c-ice-2)}
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.adv-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-lg);
  padding:36px 32px;position:relative;overflow:hidden;transition:all .35s cubic-bezier(.25,.8,.3,1);
}
.adv-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:#BFd4f5}
.adv-card.span2{grid-column:span 2}
.adv-card .adv-icon{
  width:58px;height:58px;border-radius:16px;background:var(--c-grad);
  display:flex;align-items:center;justify-content:center;margin-bottom:22px;
  box-shadow:0 8px 18px rgba(37,99,235,.28);
}
.adv-card .adv-icon svg{width:28px;height:28px;fill:#fff}
.adv-card .adv-no{
  position:absolute;top:16px;right:22px;font-size:36px;font-weight:800;
  color:var(--c-ice);line-height:1;transition:color .35s;
}
.adv-card:hover .adv-no{color:#C7DBFA}
.adv-card .adv-badge{
  position:absolute;top:0;right:26px;background:var(--c-accent);color:#fff;
  font-size:12px;font-weight:600;padding:5px 14px;border-radius:0 0 8px 8px;letter-spacing:1px;
}
.adv-card h3{font-size:20px;margin-bottom:10px}
.adv-card p{color:var(--c-text-2);font-size:14.5px;line-height:1.85}

/* ---------- 3. 快速入口 ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.quick-card{
  background:var(--c-ice-2);border:1px solid transparent;border-radius:var(--radius-lg);
  padding:34px 28px;transition:all .35s cubic-bezier(.25,.8,.3,1);display:block;
}
.quick-card:hover{background:#fff;box-shadow:var(--shadow);transform:translateY(-6px);border-color:var(--c-line)}
.quick-card .q-no{font-size:12.5px;font-weight:700;letter-spacing:2px;color:var(--c-accent)}
.quick-card .q-icon{
  width:54px;height:54px;border-radius:14px;background:#fff;box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:center;margin:18px 0 16px;transition:all .35s;
}
.quick-card:hover .q-icon{background:var(--c-grad)}
.quick-card .q-icon svg{width:26px;height:26px;fill:var(--c-accent);transition:fill .35s}
.quick-card:hover .q-icon svg{fill:#fff}
.quick-card h3{font-size:19px;margin-bottom:8px}
.quick-card p{font-size:14px;color:var(--c-text-2);line-height:1.8}
.quick-card .q-more{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;
  font-weight:700;font-size:14.5px;color:var(--c-accent);
}
.quick-card .q-more::after{content:"→";transition:transform .3s}
.quick-card:hover .q-more::after{transform:translateX(6px)}

/* ---------- 4. 横向彩色时间轴（首页独有骨架） ---------- */
.tl-sec{background:var(--c-ice-2)}
.tl-track{
  display:flex;height:10px;border-radius:99px;overflow:hidden;
  box-shadow:inset 0 1px 3px rgba(15,31,61,.18);
}
.tl-track i{flex:1;transition:flex .35s ease}
.tc1{background:linear-gradient(90deg,#3B82F6,#2563EB)}
.tc2{background:linear-gradient(90deg,#22D3EE,#06B6D4)}
.tc3{background:linear-gradient(90deg,#34D399,#10B981)}
.tc4{background:linear-gradient(90deg,#FB923C,#F97316)}
.tc5{background:linear-gradient(90deg,#A78BFA,#8B5CF6)}
.tc6{background:linear-gradient(90deg,#F87171,#EF4444)}
.tl-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-top:30px;text-align:center}
.tl-step{
  padding:8px 4px 4px;opacity:0;transform:translateY(26px);
  transition:opacity .7s ease,transform .7s cubic-bezier(.22,.9,.3,1);
}
.tl-step.tl-in{opacity:1;transform:none}
.tl-step:hover{transform:translateY(-6px)}
.tl-badge{
  width:48px;height:48px;border-radius:50%;margin:0 auto 16px;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:17px;
  box-shadow:0 8px 18px rgba(15,31,61,.22);transition:transform .35s;
}
.tl-step:hover .tl-badge{transform:scale(1.14)}
.tl-step h3{font-size:16.5px;margin-bottom:8px}
.tl-step p{font-size:13.5px;color:var(--c-text-2);line-height:1.75}
.tl-dur{
  display:inline-block;margin-top:14px;font-size:12.5px;font-weight:700;
  padding:4px 14px;border-radius:999px;
}
.tl-step.c1 .tl-badge{background:#2563EB}.tl-step.c1 .tl-dur{background:#E3EDFF;color:#2563EB}
.tl-step.c2 .tl-badge{background:#06B6D4}.tl-step.c2 .tl-dur{background:#DFF7FC;color:#0891B2}
.tl-step.c3 .tl-badge{background:#10B981}.tl-step.c3 .tl-dur{background:#DFF8EF;color:#059669}
.tl-step.c4 .tl-badge{background:#F97316}.tl-step.c4 .tl-dur{background:#FFEDDB;color:#EA580C}
.tl-step.c5 .tl-badge{background:#8B5CF6}.tl-step.c5 .tl-dur{background:#EFE9FF;color:#7C3AED}
.tl-step.c6 .tl-badge{background:#EF4444}.tl-step.c6 .tl-dur{background:#FEE2E2;color:#DC2626}

/* ---------- 5. 资讯板块（CMS 四组循环，nth-child 网格归位） ---------- */
.news-loop{
  display:grid;grid-template-columns:repeat(3,1fr);gap:38px 28px;align-items:start;
}
.news-loop img{border-radius:14px;width:100%;aspect-ratio:3/2;object-fit:cover;box-shadow:0 6px 18px rgba(27,58,107,.12);transition:transform .35s}
.news-loop>a:hover img{transform:scale(1.03)}
.news-loop time{display:flex;align-items:center;gap:6px;font-size:12.5px;color:var(--c-muted)}
.news-loop time::before{content:"";width:14px;height:14px;border-radius:50%;background:var(--c-ice);flex-shrink:0}

/* 3 列桌面端：每 12 个子元素为一组（3 条资讯 × 4 行） */
.news-loop>a:nth-child(12n+1){grid-column:1;grid-row:4n+1}
.news-loop>a:nth-child(12n+2){grid-column:1;grid-row:4n+2;font-size:17px;font-weight:700;color:var(--c-primary)}
.news-loop>a:nth-child(12n+2):hover{color:var(--c-accent)}
.news-loop>p:nth-child(12n+3){grid-column:1;grid-row:4n+3;font-size:14px;color:var(--c-text-2);line-height:1.8}
.news-loop>time:nth-child(12n+4){grid-column:1;grid-row:4n+4}
.news-loop>a:nth-child(12n+5){grid-column:2;grid-row:4n+1}
.news-loop>a:nth-child(12n+6){grid-column:2;grid-row:4n+2;font-size:17px;font-weight:700;color:var(--c-primary)}
.news-loop>a:nth-child(12n+6):hover{color:var(--c-accent)}
.news-loop>p:nth-child(12n+7){grid-column:2;grid-row:4n+3;font-size:14px;color:var(--c-text-2);line-height:1.8}
.news-loop>time:nth-child(12n+8){grid-column:2;grid-row:4n+4}
.news-loop>a:nth-child(12n+9){grid-column:3;grid-row:4n+1}
.news-loop>a:nth-child(12n+10){grid-column:3;grid-row:4n+2;font-size:17px;font-weight:700;color:var(--c-primary)}
.news-loop>a:nth-child(12n+10):hover{color:var(--c-accent)}
.news-loop>p:nth-child(12n+11){grid-column:3;grid-row:4n+3;font-size:14px;color:var(--c-text-2);line-height:1.8}
.news-loop>time:nth-child(12n+12){grid-column:3;grid-row:4n+4}

/* ---------- 6. 移动端导航高亮 ---------- */
.mobile-nav-body a.active{color:var(--c-accent)!important}

/* ---------- 6.5 服务区域（城市徽章条） ---------- */
.city-sec{background:var(--c-ice-2)}
.city-list{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;max-width:980px;margin:0 auto}
.city-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:11px 24px;border-radius:999px;font-size:14.5px;font-weight:600;
  color:var(--c-primary);background:#fff;border:1.5px solid var(--c-line);
  transition:all .3s cubic-bezier(.25,.8,.3,1);
}
.city-chip::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent-2);
  transition:all .3s;
}
.city-chip:hover{
  background:var(--c-grad);border-color:transparent;color:#fff;
  transform:translateY(-3px);box-shadow:0 10px 22px rgba(37,99,235,.28);
}
.city-chip:hover::before{background:#fff}

/* ---------- 7. 响应式 ---------- */
@media (max-width:1080px){
  .adv-grid{grid-template-columns:1fr 1fr}
  .adv-card.span2{grid-column:span 2}
  .quick-grid{grid-template-columns:1fr 1fr}
  .hero-inner{padding:130px 20px 90px}
  /* 时间轴转纵向堆叠 */
  .tl-track{display:none}
  .tl-grid{grid-template-columns:1fr;gap:26px;text-align:left;margin-top:0}
  .tl-step{display:flex;gap:18px;align-items:flex-start;border-left:4px solid transparent;padding:14px 0 14px 20px;background:#fff;border-radius:0 14px 14px 0;box-shadow:0 4px 14px rgba(27,58,107,.06)}
  .tl-step.c1{border-left-color:#2563EB}.tl-step.c2{border-left-color:#06B6D4}.tl-step.c3{border-left-color:#10B981}
  .tl-step.c4{border-left-color:#F97316}.tl-step.c5{border-left-color:#8B5CF6}.tl-step.c6{border-left-color:#EF4444}
  .tl-step .tl-badge{margin:2px 0 0;flex-shrink:0;width:42px;height:42px;font-size:15px}
  .tl-step .tl-dur{margin-top:8px}
  .tl-step h3{margin-bottom:4px}
}
@media (max-width:992px){
  /* 资讯 2 列：每 8 个子元素为一组 */
  .news-loop{grid-template-columns:repeat(2,1fr)}
  .news-loop>a:nth-child(12n+1){grid-column:auto;grid-row:auto}
  .news-loop>a:nth-child(12n+2){grid-column:auto;grid-row:auto;font-size:16px}
  .news-loop>p:nth-child(12n+3){grid-column:auto;grid-row:auto}
  .news-loop>time:nth-child(12n+4){grid-column:auto;grid-row:auto}
  .news-loop>a:nth-child(12n+5){grid-column:auto;grid-row:auto}
  .news-loop>a:nth-child(12n+6){grid-column:auto;grid-row:auto;font-size:16px}
  .news-loop>p:nth-child(12n+7){grid-column:auto;grid-row:auto}
  .news-loop>time:nth-child(12n+8){grid-column:auto;grid-row:auto}
  .news-loop>a:nth-child(12n+9){grid-column:auto;grid-row:auto}
  .news-loop>a:nth-child(12n+10){grid-column:auto;grid-row:auto;font-size:16px}
  .news-loop>p:nth-child(12n+11){grid-column:auto;grid-row:auto}
  .news-loop>time:nth-child(12n+12){grid-column:auto;grid-row:auto}
  .news-loop>a:nth-child(8n+1){grid-column:1;grid-row:4n+1}
  .news-loop>a:nth-child(8n+2){grid-column:1;grid-row:4n+2;font-size:16px;font-weight:700;color:var(--c-primary)}
  .news-loop>a:nth-child(8n+2):hover{color:var(--c-accent)}
  .news-loop>p:nth-child(8n+3){grid-column:1;grid-row:4n+3;font-size:13.5px;color:var(--c-text-2);line-height:1.75}
  .news-loop>time:nth-child(8n+4){grid-column:1;grid-row:4n+4}
  .news-loop>a:nth-child(8n+5){grid-column:2;grid-row:4n+1}
  .news-loop>a:nth-child(8n+6){grid-column:2;grid-row:4n+2;font-size:16px;font-weight:700;color:var(--c-primary)}
  .news-loop>a:nth-child(8n+6):hover{color:var(--c-accent)}
  .news-loop>p:nth-child(8n+7){grid-column:2;grid-row:4n+3;font-size:13.5px;color:var(--c-text-2);line-height:1.75}
  .news-loop>time:nth-child(8n+8){grid-column:2;grid-row:4n+4}
}
@media (max-width:768px){
  .hero{min-height:auto}
  .hero-inner{padding:120px 20px 80px}
  .hero-metas{gap:18px 0}
  .hero-metas div{padding:0 18px}
  .hero-metas b{font-size:24px}
  .scroll-down{display:none}
  .adv-grid{grid-template-columns:1fr}
  .adv-card.span2{grid-column:span 1}
}
@media (max-width:640px){
  /* 资讯 1 列：取消显式归位，按文档顺序自动流 */
  .news-loop{grid-template-columns:1fr;gap:0 0}
  .news-loop>a:nth-child(8n+1),.news-loop>a:nth-child(8n+2),.news-loop>p:nth-child(8n+3),.news-loop>time:nth-child(8n+4),
  .news-loop>a:nth-child(8n+5),.news-loop>a:nth-child(8n+6),.news-loop>p:nth-child(8n+7),.news-loop>time:nth-child(8n+8){
    grid-column:auto;grid-row:auto;
  }
  .news-loop>a:nth-child(8n+2){font-size:15.5px;margin-top:10px}
  .news-loop>p:nth-child(8n+3){margin:6px 0 2px}
  .news-loop>time:nth-child(8n+4){margin-bottom:30px}
  .quick-grid{grid-template-columns:1fr}
  /* Hero 移动端防溢出：标题缩小、按钮纵向铺满、数据带换行 */
  .hero-title{font-size:29px}
  .hero-hello{font-size:12.5px;padding:6px 14px}
  .hero-inner{padding:110px 20px 64px}
  .hero-btns{flex-direction:column;align-items:stretch}
  .hero-btns .btn{width:100%;justify-content:center}
  .hero-metas{gap:16px 0;max-width:330px}
  .hero-metas div{padding:0 16px}
}
@media (max-width:520px){
  /* 小屏收起导航电话文本，保证汉堡菜单不被挤出屏幕 */
  .nav-phone{display:none}
}