/* =========================================================
   ELITE AI · 职英AI 官网公共样式
   科技蓝 + 品牌红 · v1.0
   ========================================================= */
:root{
  --navy:#0A1930;
  --navy-2:#0E2240;
  --blue:#1B6FF0;
  --cyan:#00D4FF;
  --brand-red:#E8392E;
  --brand-red-dark:#C22B21;
  --ink:#12203A;
  --ink-2:#42536E;
  --line:#E3EAF4;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --radius:16px;
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC",-apple-system,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
.wrap{max-width:1200px;margin:0 auto;padding:0 28px}
img{max-width:100%;vertical-align:middle}
a{text-decoration:none;color:inherit}

/* ===== 导航 ===== */
.header{position:sticky;top:0;z-index:100;background:rgba(10,25,48,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.08)}
.nav{display:flex;align-items:center;gap:24px;height:76px}
.nav .logo{display:flex;align-items:center;gap:10px}
.nav .logo .ai-tag{font-size:24px;font-weight:800;background:linear-gradient(135deg,var(--cyan),#7CFFE6);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:1px;line-height:1}
.nav .logo img{height:54px;width:auto;display:block}
.nav .links{display:flex;gap:20px;margin-left:auto;align-items:center}
.nav .links a{color:#CFE0F3;font-size:14px;font-weight:500;position:relative;padding:6px 2px;transition:color .25s;white-space:nowrap}
.nav .links a:hover,.nav .links a.active{color:#fff}
.nav .links a.active::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;background:linear-gradient(90deg,var(--cyan),var(--blue));border-radius:2px}
.nav .cta{background:linear-gradient(135deg,var(--brand-red),#E8602E);color:#fff;padding:10px 20px;border-radius:10px;font-weight:700;font-size:14px;box-shadow:0 6px 18px rgba(232,57,46,.35);transition:transform .25s,box-shadow .25s;white-space:nowrap}
.nav .cta:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(232,57,46,.45)}
@media(max-width:1100px){.nav .links{gap:14px;font-size:13px}}
@media(max-width:960px){.nav .links{display:none}}

/* ===== 页面 Banner ===== */
.page-hero{position:relative;color:#fff;padding:100px 0 84px;position:relative;overflow:hidden;background:#0A1930}
.page-hero::before{content:"";position:absolute;inset:0;background-image:url('../img/page-banner-bg.png');background-size:cover;background-position:center;opacity:.85}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,25,48,.88) 0%,rgba(10,25,48,.72) 48%,rgba(10,25,48,.5) 100%)}
.page-hero .wrap{position:relative;z-index:2}
.page-hero .crumb{font-size:13px;color:#8FEAFF;margin-bottom:14px}
.page-hero .crumb a:hover{color:#fff}
.page-hero h1{font-size:42px;font-weight:800;letter-spacing:1px;margin-bottom:14px}
.page-hero h1 .dot-sep{display:inline-block;padding:0 14px;letter-spacing:0;color:#00D4FF}
.sec-head h2 .dot-sep{display:inline-block;padding:0 12px;letter-spacing:0;color:#E62222}
.page-hero p{font-size:16px;color:#BFD3EA;max-width:720px}

/* ===== 通用区块 ===== */
.sec{padding:88px 0}
.sec.alt{background:#fff}
.sec-head{text-align:center;max-width:780px;margin:0 auto 56px}
.sec-head .kicker{display:inline-block;color:var(--blue);font-size:13px;font-weight:700;letter-spacing:3px;text-transform:uppercase;margin-bottom:14px}
.sec-head h2{font-size:36px;font-weight:800;color:var(--navy);line-height:1.3}
.sec-head h2 .hl{color:var(--brand-red)}
.sec-head p{font-size:16px;color:var(--ink-2);margin-top:14px}
h3.block{font-size:20px;color:var(--navy);margin:0 0 16px;display:flex;align-items:center;gap:10px}
h3.block::before{content:"";width:5px;height:20px;background:linear-gradient(180deg,var(--blue),var(--cyan));border-radius:3px}

/* ===== 双业务 ===== */
.biz-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
@media(max-width:920px){.biz-grid{grid-template-columns:1fr}}
.biz-card{position:relative;border-radius:20px;padding:44px 40px;color:#fff;overflow:hidden;min-height:300px;display:flex;flex-direction:column;justify-content:space-between;transition:transform .3s,box-shadow .3s}
.biz-card:hover{transform:translateY(-6px);box-shadow:0 24px 48px rgba(10,25,48,.18)}
.biz-card::after{content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.14),transparent 70%)}
.biz-card .tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:2px;padding:6px 14px;border-radius:100px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);margin-bottom:18px;align-self:flex-start}
.biz-card h3{font-size:28px;font-weight:800;line-height:1.3;margin-bottom:12px}
.biz-card p{font-size:15px;opacity:.9;max-width:440px}
.biz-card .go{margin-top:26px;display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:15px;background:#fff;padding:12px 26px;border-radius:10px;align-self:flex-start}
.biz-card.blue{background:linear-gradient(150deg,#0E3A7A 0%,var(--blue) 120%)}
.biz-card.blue .go{color:var(--blue)}
.biz-card.red{background:linear-gradient(150deg,#8F1F18 0%,var(--brand-red) 130%)}
.biz-card.red .go{color:var(--brand-red)}

/* ===== 解决方案卡片 ===== */
.sol-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:920px){.sol-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.sol-grid{grid-template-columns:1fr}}
.sol-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;position:relative;transition:transform .3s,box-shadow .3s,border-color .3s;overflow:hidden}
.sol-card::before{content:"";position:absolute;left:0;top:0;height:4px;width:100%;background:linear-gradient(90deg,var(--blue),var(--cyan));transform:scaleX(0);transform-origin:left;transition:transform .4s}
.sol-card:hover{transform:translateY(-6px);box-shadow:0 20px 40px rgba(10,25,48,.1);border-color:#B8CDE8}
.sol-card:hover::before{transform:scaleX(1)}
.sol-card .ico{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,#E8F7FE,#DDF4FF);display:flex;align-items:center;justify-content:center;margin-bottom:20px;color:var(--blue)}
.sol-card .ico svg{width:26px;height:26px}
.sol-card h3{font-size:18px;font-weight:800;color:var(--navy);margin-bottom:8px}
.sol-card p{font-size:14px;color:var(--ink-2);margin-bottom:16px;min-height:44px}
.sol-card .mods{display:flex;flex-wrap:wrap;gap:6px}
.sol-card .mods span{font-size:11px;background:#F0F5FB;border:1px solid var(--line);color:var(--ink-2);padding:3px 9px;border-radius:100px}

/* ===== 八大模块 ===== */
.mod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:920px){.mod-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.mod-grid{grid-template-columns:1fr}}
.mod{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px 20px;text-align:center;transition:transform .3s,box-shadow .3s}
.mod:hover{transform:translateY(-5px);box-shadow:0 16px 32px rgba(10,25,48,.1)}
.mod .no{font-size:26px;font-weight:800;background:linear-gradient(135deg,var(--blue),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.mod h4{font-size:16px;font-weight:700;color:var(--navy);margin:8px 0 6px}
.mod p{font-size:12px;color:var(--ink-2)}

/* ===== 生态 ===== */
.eco{background:#0A1930;color:#fff;border-radius:24px;padding:60px 52px;position:relative;overflow:hidden}
.eco::before{content:"";position:absolute;inset:0;background-image:url('../img/eco-bg.png');background-size:cover;background-position:center;opacity:.9}
.eco::after{content:"";position:absolute;inset:0;background:rgba(10,25,48,.42)}
.eco .wrap-in{position:relative;z-index:2}
.eco h3{font-size:30px;font-weight:800;text-align:center;margin-bottom:12px}
.eco .sub{text-align:center;color:#9FB8D6;font-size:15px;margin-bottom:44px}
.eco .chain{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap}
.eco .chain .node{background:rgba(255,255,255,.08);border:1px solid rgba(0,212,255,.4);color:#CFE0F3;padding:16px 24px;border-radius:12px;font-size:16px;font-weight:700}
.eco .chain .arrow{color:var(--cyan);font-size:20px;font-weight:800}
.eco .slogan{text-align:center;margin-top:34px;font-size:16px;color:#8FEAFF;font-weight:600}

/* ===== 院校墙 ===== */
.schools{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:920px){.schools{grid-template-columns:repeat(2,1fr)}}
.school{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 14px;text-align:center;color:#7A8AA0;font-size:14px;font-weight:600;transition:all .3s;display:flex;align-items:center;justify-content:center;min-height:96px}
.school img{max-height:60px;max-width:70%;filter:grayscale(1);opacity:.85;transition:all .3s}
.school:hover{border-color:var(--blue);color:var(--blue);box-shadow:0 8px 20px rgba(10,25,48,.08);transform:translateY(-3px)}
.school:hover img{filter:grayscale(0);opacity:1}

/* ===== 新闻 ===== */
.news-grid{display:grid;grid-template-columns:1fr 1fr 1.1fr;gap:24px}
@media(max-width:920px){.news-grid{grid-template-columns:1fr}}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .3s,box-shadow .3s}
.news-card:hover{transform:translateY(-5px);box-shadow:0 18px 36px rgba(10,25,48,.1)}
.news-card .thumb{height:170px;background:linear-gradient(135deg,#0E3A7A,var(--blue));position:relative;display:flex;align-items:center;justify-content:center}
.news-card .thumb .ph{color:#fff;font-size:13px;letter-spacing:2px;opacity:.7}
.news-card .body{padding:22px}
.news-card .date{font-size:12px;color:#9AAAC0}
.news-card h4{font-size:16px;font-weight:700;color:var(--navy);margin:8px 0}
.news-card p{font-size:13px;color:var(--ink-2)}

/* ===== CTA + 页脚 ===== */
.cta-band{background:radial-gradient(900px 400px at 20% 0%,rgba(0,212,255,.2),transparent 60%),radial-gradient(700px 380px at 85% 100%,rgba(232,57,46,.22),transparent 55%),var(--navy);border-radius:28px;padding:70px 56px;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-band h2{font-size:34px;font-weight:800;margin-bottom:16px}
.cta-band p{font-size:17px;color:#BFD3EA;margin-bottom:34px}
.cta-band .btn{display:inline-block;padding:16px 40px;border-radius:12px;font-weight:700;font-size:17px;background:linear-gradient(135deg,var(--brand-red),#E8602E);color:#fff;box-shadow:0 10px 26px rgba(232,57,46,.4);transition:transform .25s}
.cta-band .btn:hover{transform:translateY(-3px)}
.footer{background:var(--navy);color:#8FA7C6;padding:56px 0 40px}
.footer .grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
@media(max-width:920px){.footer .grid{grid-template-columns:1fr 1fr}}
.footer .brand img{height:38px;margin-bottom:18px}
.footer .brand p{font-size:13px;max-width:300px}
.footer h5{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer a{display:block;font-size:14px;color:#8FA7C6;padding:4px 0;transition:color .2s}
.footer a:hover{color:var(--cyan)}
.footer .bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:40px;padding-top:24px;display:flex;justify-content:space-between;align-items:center;font-size:13px;flex-wrap:wrap;gap:12px}
.footer .zhuan{display:flex;align-items:center;gap:12px}
.footer .zhuan img{height:52px;width:52px;border-radius:8px;background:#fff;padding:4px}

/* ===== 子页面通用 ===== */
.page-hero .actions{margin-top:28px}
.btn{display:inline-block;padding:14px 32px;border-radius:12px;font-weight:700;font-size:15px;transition:transform .25s,box-shadow .25s}
.btn-brand{background:linear-gradient(135deg,var(--brand-red),#E8602E);color:#fff;box-shadow:0 10px 26px rgba(232,57,46,.4)}
.btn-blue{background:linear-gradient(135deg,var(--blue),#0E9BE8);color:#fff;box-shadow:0 10px 26px rgba(27,111,240,.4)}
.btn:hover{transform:translateY(-3px)}
.pill{display:inline-block;background:#E8F7FE;color:#0E7FA8;font-size:12px;padding:4px 14px;border-radius:100px;font-weight:600;margin:3px}
.pill.red{background:#FDECEC;color:#C22B21}
.pill.orange{background:#FFF4EA;color:#E2680A}
table.tbl{width:100%;border-collapse:collapse;font-size:14px;background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 8px 24px rgba(10,25,48,.06)}
table.tbl th{background:var(--navy);color:#fff;text-align:left;padding:12px 14px;font-weight:600;font-size:13px}
table.tbl td{padding:11px 14px;border-bottom:1px solid var(--line);color:var(--ink-2);vertical-align:top}
table.tbl tr:nth-child(even) td{background:#F8FAFD}
table.tbl td b{color:var(--navy)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:st}
@media(max-width:920px){.steps{grid-template-columns:repeat(2,1fr)}}
.step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 20px;position:relative}
.step .no{font-size:30px;font-weight:800;color:transparent;-webkit-text-stroke:1.5px var(--blue);margin-bottom:8px}
.step h4{font-size:16px;color:var(--navy);margin-bottom:6px}
.step p{font-size:13px;color:var(--ink-2)}
.notes{background:#E8F7FE;border-left:4px solid var(--cyan);padding:14px 18px;border-radius:8px;font-size:14px;color:#0E4A66}
.qr-panel{background:linear-gradient(150deg,var(--navy) 0%,#0B3A6B 100%);border-radius:var(--radius);padding:32px;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
.qr-panel img{width:140px;height:140px;border-radius:12px;margin-bottom:16px;border:3px solid rgba(255,255,255,.3)}
.qr-panel h4{font-size:18px;font-weight:800;margin-bottom:6px}
.qr-panel p{font-size:13px;color:#9FB8D6}

/* ===== 交互特效（科技感·克制） ===== */
.nowrap{white-space:nowrap}

/* 滚动显现 */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1);will-change:opacity,transform}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.1s}.d2{transition-delay:.2s}.d3{transition-delay:.3s}.d4{transition-delay:.4s}.d5{transition-delay:.5s}.d6{transition-delay:.6s}

/* Hero 入场动画 */
@keyframes heroUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:none}}
.hero-up{opacity:0;animation:heroUp .8s cubic-bezier(.22,.61,.36,1) forwards}
.hu-1{animation-delay:.15s}.hu-2{animation-delay:.32s}.hu-3{animation-delay:.5s}.hu-4{animation-delay:.68s}

/* 渐变流动文字 */
@keyframes flowGrad{0%{background-position:0% 50%}100%{background-position:200% 50%}}
.flow-hl{background:linear-gradient(90deg,var(--cyan),#7CFFE6,var(--blue),var(--cyan));background-size:200% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:flowGrad 6s linear infinite}

/* 按钮扫光 */
.btn-sheen{position:relative;overflow:hidden}
.btn-sheen::after{content:"";position:absolute;top:0;left:-75%;width:50%;height:100%;background:linear-gradient(120deg,transparent,rgba(255,255,255,.35),transparent);transform:skewX(-20deg);transition:left .6s ease}
.btn-sheen:hover::after{left:125%}

/* 卡片光晕描边 */
.glow-hover{position:relative}
.glow-hover::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:linear-gradient(135deg,rgba(0,212,255,.7),rgba(27,111,240,.3));-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .35s;pointer-events:none}
.glow-hover:hover::before{opacity:1}

/* 背景漂浮光点 */
@keyframes floatDot{0%,100%{transform:translateY(0) translateX(0);opacity:.25}50%{transform:translateY(-26px) translateX(10px);opacity:.7}}
.dot-layer{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:1}
.dot-layer i{position:absolute;display:block;border-radius:50%;background:var(--cyan);filter:blur(1px);animation:floatDot 7s ease-in-out infinite;opacity:.25}

/* 导航滚动态：半透明 */
.header.scrolled{background:rgba(10,25,48,.72);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:0 8px 30px rgba(0,0,0,.25);border-bottom-color:rgba(0,212,255,.3)}

/* ===== 表单提交提示条 ===== */
.form-toast{position:fixed;top:90px;left:50%;transform:translateX(-50%);z-index:9999;padding:12px 24px;border-radius:12px;font-size:14px;font-weight:600;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.18);animation:toastIn .3s ease;max-width:90vw;text-align:center}
.form-toast.ok{background:linear-gradient(135deg,#0E7A3C,#10A55C)}
.form-toast.err{background:linear-gradient(135deg,#C0392B,#E74C3C)}
@keyframes toastIn{from{opacity:0;transform:translate(-50%,-8px)}to{opacity:1;transform:translate(-50%,0)}}