/* ===========================================================
   内蒙古云鲸科技有限公司 - 门户网站样式
   =========================================================== */

:root{
  --brand:#0a5fd0;
  --brand-dark:#08499e;
  --brand-soft:#e8f1fd;
  --teal:#0f9b8e;
  --teal-soft:#e3f6f3;
  --ink:#0e1c2b;
  --ink-2:#22354a;
  --muted:#5f7288;
  --line:#e3eaf2;
  --bg:#ffffff;
  --soft:#f4f8fc;
  --soft-2:#eef4fa;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 8px 28px rgba(14,28,43,.08);
  --shadow-lg:0 18px 48px rgba(14,28,43,.14);
  --maxw:1200px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  color:var(--ink-2);
  background:var(--bg);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.3;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--brand);text-transform:uppercase;margin-bottom:12px;
}
.section{padding:88px 0;}
.section--soft{background:var(--soft);}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head h2{font-size:34px;margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:17px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;transition:.25s ease;white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(10,95,208,.28);}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);}
.btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.4);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.18);}
.btn-outline{border-color:var(--line);color:var(--ink);background:#fff;}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid transparent;transition:.25s;
}
.nav.scrolled{border-bottom-color:var(--line);box-shadow:0 4px 18px rgba(14,28,43,.06);}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.logo{display:flex;align-items:center;gap:12px;}
.logo-mark{
  width:42px;height:42px;border-radius:12px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand),#22a7f0);
  display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(10,95,208,.3);
}
.logo-mark svg{width:24px;height:24px;fill:#fff;}
.logo-text b{display:block;font-size:17px;color:var(--ink);letter-spacing:.02em;}
.logo-text small{display:block;font-size:11px;color:var(--muted);letter-spacing:.12em;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  padding:8px 14px;border-radius:8px;font-size:15px;font-weight:500;color:var(--ink-2);transition:.2s;
}
.nav-links a:hover{color:var(--brand);background:var(--brand-soft);}
.nav-links a.active{color:var(--brand);font-weight:700;}
.nav-cta{display:flex;align-items:center;gap:12px;}
.burger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;}
.burger i{display:block;width:18px;height:2px;background:var(--ink);margin:4px auto;border-radius:2px;}
@media(max-width:980px){
  .nav-cta .btn{display:none;}
  .burger{display:block;}
  .nav-links{
    position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;
    padding:12px 24px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);
    display:none;
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 4px;border-bottom:1px solid var(--line);}
}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:
    radial-gradient(900px 460px at 78% 12%, rgba(34,167,240,.35), transparent 60%),
    radial-gradient(700px 420px at 8% 88%, rgba(15,155,142,.28), transparent 62%),
    linear-gradient(150deg,#0a1c33 0%,#0d2f5c 52%,#0a4d8f 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;opacity:.28;
  background-image:linear-gradient(rgba(255,255,255,.09) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 60% 30%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 60% 30%,#000 20%,transparent 78%);
}
.hero .wrap{position:relative;padding:104px 24px 96px;}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
.hero h1{color:#fff;font-size:48px;line-height:1.22;margin-bottom:20px;}
.hero h1 em{font-style:normal;color:#7fd0ff;}
.hero p.lead{font-size:18px;color:rgba(255,255,255,.8);max-width:560px;margin-bottom:32px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:44px;}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap;}
.hero-tags span{
  font-size:13px;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);color:#d7e7fb;
}
.hero-panel{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  border-radius:20px;padding:26px;backdrop-filter:blur(6px);box-shadow:0 22px 60px rgba(0,0,0,.28);
}
.hero-panel h4{color:#fff;font-size:15px;letter-spacing:.06em;margin-bottom:18px;opacity:.85;font-weight:600;}
.hero-panel ul{display:grid;gap:14px;}
.hero-panel li{display:flex;gap:12px;align-items:flex-start;}
.hero-panel li b{display:block;color:#fff;font-size:15px;font-weight:600;}
.hero-panel li small{color:rgba(255,255,255,.62);font-size:13px;line-height:1.6;}
.dot{
  width:28px;height:28px;flex:0 0 auto;border-radius:9px;display:flex;align-items:center;justify-content:center;
  background:rgba(127,208,255,.18);color:#7fd0ff;font-weight:700;font-size:13px;
}
@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:34px;}
  .hero .wrap{padding:72px 24px 72px;}
}

/* ---------- 数据条 ---------- */
.stats{border-bottom:1px solid var(--line);background:#fff;}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);}
.stats div{padding:36px 8px;text-align:center;border-right:1px solid var(--line);}
.stats div:last-child{border-right:0;}
.stats b{display:block;font-size:34px;color:var(--brand);line-height:1.2;}
.stats b i{font-style:normal;font-size:18px;margin-left:2px;}
.stats small{display:block;color:var(--muted);font-size:14px;margin-top:4px;}
@media(max-width:760px){
  .stats .wrap{grid-template-columns:repeat(2,1fr);}
  .stats div:nth-child(2){border-right:0;}
  .stats div:nth-child(-n+2){border-bottom:1px solid var(--line);}
}

/* ---------- 卡片 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;
  transition:.28s ease;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:#cfe0f4;}
.card .ico{
  width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);margin-bottom:18px;
}
.card .ico svg{width:26px;height:26px;fill:currentColor;}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{color:var(--muted);font-size:15px;}
.card .more{margin-top:16px;font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;gap:6px;align-items:center;}
.card ul{margin-top:14px;display:grid;gap:8px;}
.card ul li{font-size:14px;color:var(--muted);padding-left:18px;position:relative;}
.card ul li::before{
  content:"";position:absolute;left:2px;top:10px;width:6px;height:6px;border-radius:50%;background:var(--teal);
}
@media(max-width:980px){.grid-3{grid-template-columns:1fr;}.grid-2{grid-template-columns:1fr;}}

/* ---------- 优势 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split h2{font-size:32px;margin-bottom:16px;}
.split p{color:var(--muted);font-size:16px;margin-bottom:18px;}
.checklist{display:grid;gap:14px;margin-top:22px;}
.checklist li{display:flex;gap:12px;align-items:flex-start;font-size:15px;}
.checklist li svg{width:20px;height:20px;flex:0 0 auto;margin-top:3px;fill:var(--teal);}
.visual{
  border-radius:20px;padding:30px;color:#fff;
  background:linear-gradient(150deg,#0d2f5c,#0a5fd0 60%,#22a7f0);
  box-shadow:var(--shadow-lg);
}
.visual h4{color:#fff;font-size:18px;margin-bottom:6px;}
.visual > p{color:rgba(255,255,255,.72);font-size:14px;margin-bottom:24px;}
.visual .row{display:flex;justify-content:space-between;align-items:center;padding:14px 0;border-top:1px solid rgba(255,255,255,.16);font-size:14px;}
.visual .row span:last-child{color:#7fd0ff;font-weight:600;}
@media(max-width:980px){.split{grid-template-columns:1fr;gap:32px;}}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-left:26px;}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:linear-gradient(var(--brand),var(--teal));}
.timeline li{position:relative;padding:0 0 30px 18px;}
.timeline li::before{
  content:"";position:absolute;left:-26px;top:8px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);
}
.timeline time{display:block;font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.06em;}
.timeline h3{font-size:17px;margin:4px 0 6px;}
.timeline p{font-size:15px;color:var(--muted);}

/* ---------- 行业 / 客户 ---------- */
.chips{display:flex;flex-wrap:wrap;gap:12px;}
.chips span{
  padding:10px 18px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:14px;font-weight:500;color:var(--ink-2);
}
.chips span:hover{border-color:var(--brand);color:var(--brand);}

/* ---------- 新闻 ---------- */
.news-list{display:grid;gap:0;}
.news-item{
  display:grid;grid-template-columns:132px 1fr auto;gap:24px;align-items:center;
  padding:24px 4px;border-bottom:1px solid var(--line);transition:.2s;
}
.news-item:hover{background:var(--soft);padding-left:14px;padding-right:14px;border-radius:12px;}
.news-date{font-size:14px;color:var(--muted);font-weight:600;}
.news-date b{display:block;font-size:22px;color:var(--ink);}
.news-item h3{font-size:18px;margin-bottom:6px;}
.news-item p{font-size:15px;color:var(--muted);}
.news-item .arrow{color:var(--brand);font-size:20px;}
@media(max-width:760px){
  .news-item{grid-template-columns:1fr;gap:6px;}
  .news-item .arrow{display:none;}
  .news-date b{display:inline;font-size:15px;}
}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,#0a1c33,#0a5fd0 55%,#0f9b8e);color:#fff;text-align:center;
  padding:70px 24px;
}
.cta-band h2{color:#fff;font-size:32px;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.82);max-width:620px;margin:0 auto 28px;}

/* ---------- 页脚 ---------- */
.footer{background:#0b1727;color:#9fb2c6;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;}
.footer h5{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.04em;}
.footer p{font-size:14px;line-height:1.9;}
.footer a{font-size:14px;display:inline-block;padding:4px 0;transition:.2s;}
.footer a:hover{color:#7fd0ff;}
.footer .logo-text b{color:#fff;}
.footer .logo-text small{color:#7d90a6;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 28px;font-size:13px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:#7d90a6;
}
@media(max-width:980px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:600px){.footer-grid{grid-template-columns:1fr;}}

/* ---------- 表单 ---------- */
.form{display:grid;gap:18px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--ink);}
.field input,.field textarea,.field select{
  width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);
  font-family:inherit;font-size:15px;color:var(--ink);background:#fff;transition:.2s;
}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-soft);}
.field textarea{min-height:130px;resize:vertical;}
.form-note{font-size:13px;color:var(--muted);}
@media(max-width:640px){.form-row{grid-template-columns:1fr;}}

/* ---------- 面包屑 / 页头 ---------- */
.pagehead{
  background:linear-gradient(140deg,#0a1c33,#0d3a70);color:#fff;padding:64px 0 60px;position:relative;overflow:hidden;
}
.pagehead::after{
  content:"";position:absolute;inset:0;opacity:.2;
  background-image:linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:48px 48px;
}
.pagehead .wrap{position:relative;}
.pagehead h1{color:#fff;font-size:38px;margin-bottom:10px;}
.pagehead p{color:rgba(255,255,255,.76);font-size:16px;max-width:640px;}
.crumbs{font-size:13px;color:rgba(255,255,255,.6);margin-bottom:14px;}
.crumbs a:hover{color:#7fd0ff;}

/* ---------- 信息表 ---------- */
.info-table{width:100%;border-collapse:collapse;font-size:15px;}
.info-table th,.info-table td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;}
.info-table th{width:180px;color:var(--muted);font-weight:500;background:var(--soft);}
@media(max-width:640px){
  .info-table th{width:110px;}
  .info-table th,.info-table td{font-size:14px;padding:12px 8px;}
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;}}

.notice{
  background:#fff8e6;border:1px solid #f2dfae;color:#7a5b12;font-size:13px;
  padding:12px 16px;border-radius:var(--radius-sm);margin-top:32px;
}

/* ---------- 锚点偏移（避开吸顶导航） ---------- */
section[id],div[id]{scroll-margin-top:96px;}

/* ===========================================================
   动效层
   =========================================================== */

/* 页面载入淡入 */
body{animation:pageIn .5s ease both;}
@keyframes pageIn{from{opacity:0}to{opacity:1}}

/* 顶部滚动进度条 */
#progressBar{
  position:fixed;top:0;left:0;height:3px;width:0;z-index:200;
  background:linear-gradient(90deg,var(--brand),#22a7f0 55%,var(--teal));
  box-shadow:0 0 12px rgba(34,167,240,.5);transition:width .1s linear;
}

/* Hero 粒子画布 */
.hero{position:relative;}
#heroCanvas{position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;}
.hero .wrap{position:relative;z-index:2;}

/* Hero 光标光晕 */
.hero-spotlight{
  position:absolute;inset:0;z-index:1;pointer-events:none;opacity:0;transition:opacity .4s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,40%),rgba(127,208,255,.16),transparent 68%);
}
.hero:hover .hero-spotlight{opacity:1;}

/* 标题逐行进场（初始隐藏仅在 JS 接管后生效，避免脚本异常导致内容不可见） */
.line{display:block;overflow:hidden;}
.hero.fx .line > span{display:block;transform:translateY(110%);opacity:0;}
.run-in .line > span{
  animation:lineUp .85s cubic-bezier(.2,.7,.2,1) forwards;
}
.run-in .line:nth-child(2) > span{animation-delay:.12s;}
.run-in .line:nth-child(3) > span{animation-delay:.24s;}
@keyframes lineUp{to{transform:none;opacity:1;}}

/* 首屏元素顺序进场 */
.hero.fx .fade-up{opacity:0;transform:translateY(18px);}
.line > span{display:block;}
.run-in .fade-up{animation:fadeUp .8s cubic-bezier(.2,.7,.2,1) forwards;}
.run-in .d1.fade-up{animation-delay:.35s;}
.run-in .d2.fade-up{animation-delay:.5s;}
.run-in .d3.fade-up{animation-delay:.65s;}
.run-in .d4.fade-up{animation-delay:.8s;}
@keyframes fadeUp{to{opacity:1;transform:none;}}

/* 只淡入、不改 transform（供视差元素使用） */
.hero.fx .fade-in-only{opacity:0;}
.run-in .fade-in-only{animation:fadeIn .9s ease forwards .55s;}
@keyframes fadeIn{to{opacity:1;}}

/* 导航滑动指示条 */
.nav-links{position:relative;}
.nav-indicator{
  position:absolute;bottom:2px;height:3px;border-radius:3px;background:var(--brand);
  transition:left .3s cubic-bezier(.2,.7,.2,1),width .3s cubic-bezier(.2,.7,.2,1);
  pointer-events:none;opacity:0;
}
.nav-indicator.on{opacity:1;}
@media(max-width:980px){.nav-indicator{display:none;}}

/* 按钮磁吸 + 涟漪 */
.btn{position:relative;overflow:hidden;}
.ripple{
  position:absolute;border-radius:50%;transform:scale(0);pointer-events:none;
  background:rgba(255,255,255,.42);animation:ripple .6s ease-out forwards;
}
.btn-outline .ripple{background:rgba(10,95,208,.18);}
@keyframes ripple{to{transform:scale(2.4);opacity:0;}}

/* 卡片 3D 倾斜 */
.card,.visual{will-change:transform;}
.tilt{transition:transform .25s cubic-bezier(.2,.7,.2,1),box-shadow .25s;transform-style:preserve-3d;}

/* 数据条数字 */
.stats b{transition:transform .3s;}
.stats div:hover b{transform:scale(1.08);}

/* CTA 背景流动 */
.cta-band{background-size:220% 220%;animation:flowBg 14s ease infinite;}
@keyframes flowBg{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}

/* 页头光带扫过 */
.pagehead::before{
  content:"";position:absolute;top:0;left:-40%;width:40%;height:100%;z-index:1;
  background:linear-gradient(90deg,transparent,rgba(127,208,255,.16),transparent);
  animation:sweep 7s ease-in-out infinite;
}
.pagehead .wrap{z-index:2;}
@keyframes sweep{0%{left:-40%}60%,100%{left:120%}}

/* 返回顶部 */
.toTop{
  position:fixed;right:24px;bottom:28px;z-index:150;width:46px;height:46px;border-radius:50%;
  border:0;cursor:pointer;color:#fff;background:linear-gradient(135deg,var(--brand),#22a7f0);
  box-shadow:0 10px 24px rgba(10,95,208,.35);
  display:flex;align-items:center;justify-content:center;
  opacity:0;transform:translateY(14px) scale(.9);pointer-events:none;transition:.3s cubic-bezier(.2,.7,.2,1);
}
.toTop.show{opacity:1;transform:none;pointer-events:auto;}
.toTop:hover{transform:translateY(-4px);}
.toTop svg{width:20px;height:20px;fill:#fff;}

/* 微动：箭头 */
.more:hover svg,.arrow:hover{transform:translateX(4px);}
.more,.arrow{transition:transform .25s;}
.news-item:hover .arrow{transform:translateX(6px);}

/* 降低动效偏好 */
@media(prefers-reduced-motion:reduce){
  body,.cta-band,.pagehead::before{animation:none;}
  .hero.fx .line > span,.hero.fx .fade-up,.hero.fx .fade-in-only{
    opacity:1;transform:none;animation:none;
  }
  #heroCanvas{display:none;}
}

/* ---------- 新闻详情展开 ---------- */
.news-date span{display:inline-block;margin-top:6px;font-size:12px;color:var(--brand);font-weight:700;letter-spacing:.08em;}
.news-item details{margin-top:10px;}
.news-item summary{
  cursor:pointer;font-size:14px;font-weight:600;color:var(--brand);list-style:none;
  display:inline-flex;align-items:center;gap:6px;
}
.news-item summary::-webkit-details-marker{display:none;}
.news-item summary::after{content:"＋";font-size:14px;}
.news-item details[open] summary::after{content:"－";}
.news-body{
  margin-top:12px;padding:16px 18px;background:var(--soft);border-radius:var(--radius-sm);
  font-size:15px;color:var(--ink-2);
}
.news-body p + p{margin-top:10px;}