/* 威盛教育 · 浅色科技风 v2 —— 打破网格 · 叙事化布局 */
:root{
  --bg:#f6f9ff; --bg-soft:#eef3fb; --card:#ffffff;
  --ink:#0f1b33; --ink-soft:#4a5b7d; --ink-mute:#8a97b5;
  --brand:#2f6bff; --brand-2:#00c2a8;
  --brand-grad:linear-gradient(120deg,#2f6bff 0%,#00c2a8 100%);
  --line:#e4eaf6;
  --shadow:0 10px 40px rgba(30,60,140,.10);
  --shadow-lg:0 30px 80px rgba(30,60,140,.18);
  --radius:22px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1240px,92%);margin:0 auto}

/* ---------- 导航 ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;backdrop-filter:saturate(180%) blur(16px);
  background:rgba(255,255,255,.65);border-bottom:1px solid rgba(228,234,246,.7);transition:.3s}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:84px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px}
.logo-img{height:52px;width:auto;display:block}
.logo-badge{width:38px;height:38px;border-radius:11px;background:var(--brand-grad);
  display:grid;place-items:center;color:#fff;font-size:18px;box-shadow:var(--shadow)}
.logo small{display:block;font-size:10px;color:var(--ink-mute);font-weight:500;letter-spacing:2px}
.nav-links{display:flex;gap:4px;align-items:center}
.nav-links a{padding:9px 15px;border-radius:10px;font-size:15px;color:var(--ink-soft);position:relative;transition:.25s}
.nav-links a:hover{color:var(--brand);background:var(--bg-soft)}
.nav-links a.active{color:var(--brand);font-weight:600}
.nav-links a.active::after{content:"";position:absolute;left:15px;right:15px;bottom:3px;height:3px;border-radius:3px;background:var(--brand-grad)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:13px;font-weight:600;font-size:15px;cursor:pointer;border:none;transition:.3s}
.btn-primary{background:var(--brand-grad);color:#fff;box-shadow:0 10px 28px rgba(47,107,255,.35)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(47,107,255,.45)}
.btn-ghost{background:rgba(255,255,255,.8);border:1px solid var(--line);color:var(--ink-soft)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-3px)}
.nav-toggle{display:none}
/* 语言切换按钮 */
.lang-switch{padding:8px 14px;border-radius:99px;border:1px solid var(--line);background:#fff;
  color:var(--ink-soft);font-size:13px;font-weight:600;cursor:pointer;transition:.25s}
.lang-switch:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- Hero：大图 + 光晕 + 视差 ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;padding:120px 0 80px}
.hero-glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.55;pointer-events:none}
.g1{width:560px;height:560px;background:radial-gradient(circle,#bcd4ff,transparent 65%);top:-120px;right:-80px;animation:drift 14s ease-in-out infinite}
.g2{width:480px;height:480px;background:radial-gradient(circle,#a9efe1,transparent 65%);bottom:-100px;left:-100px;animation:drift 18s ease-in-out infinite reverse}
@keyframes drift{0%,100%{transform:translate(0,0)}50%{transform:translate(40px,-40px)}}
.hero-gridbg{position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:56px 56px;mask-image:radial-gradient(75% 65% at 50% 35%,#000 25%,transparent 100%)}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.hero-copy .kick{display:inline-flex;align-items:center;gap:8px;padding:8px 20px;border-radius:99px;background:#fff;
  border:1px solid var(--line);color:var(--brand);font-size:13px;font-weight:600;box-shadow:var(--shadow);margin-bottom:30px}
.hero-copy .kick .dot{width:8px;height:8px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 0 5px rgba(0,194,168,.18);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.3)}}
.hero-copy h1{font-size:clamp(44px,6.4vw,84px);font-weight:900;line-height:1.08;letter-spacing:1px}
.hero-copy h1 .grad{background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-copy .sub{margin:26px 0 0;max-width:520px;font-size:18px;color:var(--ink-soft)}
.hero-cta{margin-top:42px;display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:44px;margin-top:56px}
.hstat .n{font-size:34px;font-weight:900;background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hstat .l{color:var(--ink-mute);font-size:13px;margin-top:2px}

/* Hero 右侧浮动视觉 */
.hero-visual{position:relative;height:520px}
.float-card{position:absolute;background:rgba(255,255,255,.85);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.9);
  border-radius:18px;box-shadow:var(--shadow-lg);padding:18px 22px;animation:floaty 6s ease-in-out infinite}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-18px)}}
.fc1{top:6%;left:4%;width:230px}
.fc2{top:38%;right:0;width:210px;animation-delay:1.4s}
.fc3{bottom:4%;left:16%;width:200px;animation-delay:2.6s}
.float-card .fi{width:44px;height:44px;border-radius:12px;background:var(--brand-grad);display:grid;place-items:center;font-size:22px;margin-bottom:12px}
.float-card h4{font-size:16px;font-weight:700}
.float-card p{font-size:12px;color:var(--ink-mute);margin-top:4px}
.hero-img-main{position:absolute;inset:0;border-radius:26px;overflow:hidden;box-shadow:var(--shadow-lg);opacity:.9}
.hero-img-main img{width:100%;height:100%;object-fit:cover}

/* ---------- 通用 ---------- */
.section{padding:110px 0}
.section-head{margin-bottom:64px;max-width:720px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head .kick{color:var(--brand);font-weight:700;font-size:13px;letter-spacing:4px;text-transform:uppercase}
.section-head h2{font-size:clamp(30px,3.8vw,48px);font-weight:900;margin-top:12px;line-height:1.2}
.section-head p{color:var(--ink-soft);font-size:17px;margin-top:16px}

/* ---------- 品牌：不对称叙事 ---------- */
.brands{display:flex;flex-direction:column;gap:120px}
.brand-row{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.brand-row.flip .brand-media{order:2}
.brand-media{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg);height:420px}
.brand-media img{width:100%;height:100%;object-fit:cover;transition:transform .8s cubic-bezier(.2,.7,.3,1)}
.brand-row:hover .brand-media img{transform:scale(1.06)}
.brand-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(15,27,51,.28))}
.brand-num{position:absolute;top:-30px;left:-10px;font-size:120px;font-weight:900;color:transparent;
  -webkit-text-stroke:2px #cfe0ff;opacity:.7;z-index:0;font-family:Arial}
.brand-copy{position:relative;z-index:1}
.brand-copy .bico{width:60px;height:60px;border-radius:16px;background:var(--brand-grad);display:grid;place-items:center;font-size:28px;margin-bottom:24px;box-shadow:var(--shadow)}
.brand-copy h3{font-size:34px;font-weight:900}
.brand-copy .btag{color:var(--brand);font-weight:600;font-size:15px;margin:8px 0 18px;display:block}
.brand-copy p{color:var(--ink-soft);font-size:16px;max-width:480px}
.brand-copy .go{margin-top:28px;display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:700;font-size:16px}
.brand-copy .go i{transition:.3s;font-style:normal}
.brand-row:hover .go i{transform:translateX(6px)}
.brand-points{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.brand-points span{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-soft)}
.brand-points span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-2)}

/* ---------- 新闻：横向卡片 ---------- */
.news-list{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.news-big{grid-column:1/-1;display:grid;grid-template-columns:1.2fr 1fr;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.4s}
.news-big:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.news-big .nc{height:320px;background:var(--brand-grad);background-size:cover;background-position:center}
.news-big .nb{padding:44px;display:flex;flex-direction:column;justify-content:flex-start}
.news-sm{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.4s}
.news-sm:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.news-sm .nc{height:180px;background:var(--brand-grad);background-size:cover;background-position:center}
.news-sm .nb{padding:24px}
.cat{display:inline-block;font-size:12px;color:var(--brand);background:var(--bg-soft);padding:4px 12px;border-radius:99px;margin-bottom:12px}
.news-big h4{font-size:24px;font-weight:800;line-height:1.4}
.news-sm h4{font-size:17px;font-weight:700;line-height:1.5}
.news-big p,.news-sm p{color:var(--ink-mute);font-size:14px;margin-top:10px}

/* ---------- CTA ---------- */
.cta-band{background:var(--brand-grad);border-radius:28px;padding:80px 60px;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;width:400px;height:400px;border-radius:50%;background:rgba(255,255,255,.12);top:-200px;right:-100px}
.cta-band h2{font-size:clamp(28px,3.4vw,44px);font-weight:900}
.cta-band p{opacity:.92;margin:16px 0 34px;font-size:17px}
.cta-band .btn{background:#fff;color:var(--brand)}

/* ---------- 页脚 ---------- */
.footer{background:#0c1530;color:#aeb9d6;margin-top:40px}
.footer-inner{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding:76px 0 44px}
.footer h5{color:#fff;font-size:16px;margin-bottom:18px}
.footer a{display:block;font-size:14px;padding:5px 0;opacity:.78;transition:.2s}
.footer a:hover{opacity:1;color:#fff}
.footer-brand{font-size:22px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;text-align:center;font-size:13px;opacity:.6}

/* ---------- 滚动淡入 / 错位 ---------- */
.reveal{opacity:0;transform:translateY(40px);transition:.9s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
.reveal-l{opacity:0;transform:translateX(-50px);transition:.9s cubic-bezier(.2,.7,.3,1)}
.reveal-r{opacity:0;transform:translateX(50px);transition:.9s cubic-bezier(.2,.7,.3,1)}
.reveal-l.in,.reveal-r.in{opacity:1;transform:none}

/* ---------- 内页 ---------- */
.page-hero{position:relative;padding:170px 0 100px;overflow:hidden;background:linear-gradient(160deg,#eef3fb,#f6f9ff)}
.page-hero .hero-gridbg{opacity:.4}
.page-hero h1{font-size:clamp(34px,5vw,58px);font-weight:900}
.page-hero .lead{color:var(--ink-soft);font-size:18px;max-width:640px;margin-top:18px}
.page-hero .crumb{font-size:13px;color:var(--ink-mute);margin-bottom:16px}
.page-hero .crumb a{color:var(--brand)}

/* ---------- 品牌子页出血 Hero（与首页同风格）---------- */
.brand-hero{position:relative;min-height:88vh;display:flex;align-items:center;overflow:hidden;padding:150px 0 90px}
.brand-hero .brand-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.brand-hero .brand-hero-bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(246,249,255,.97) 0%,rgba(246,249,255,.9) 35%,rgba(246,249,255,.5) 62%,rgba(246,249,255,.1) 100%),
  linear-gradient(180deg,rgba(246,249,255,0) 80%,rgba(238,243,251,.85) 100%)}
.brand-hero .brand-hero-copy{position:relative;z-index:2;max-width:640px}
.brand-hero h1{font-size:clamp(44px,5.6vw,78px);font-weight:900;line-height:1.05}
.brand-hero .lead{color:var(--ink-soft);font-size:19px;margin-top:18px;line-height:1.8}
.brand-hero .crumb{font-size:13px;color:var(--ink-mute);margin-bottom:20px}
.brand-hero .crumb a{color:var(--brand)}
.brand-hero .hero-desc{color:var(--ink-soft);font-size:15px;margin-top:16px;line-height:1.8;max-width:520px}
.brand-hero .hero-keys{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.brand-hero .hero-keys span{font-size:13px;color:var(--brand);background:rgba(255,255,255,.85);
  border:1px solid var(--line);padding:6px 16px;border-radius:99px;backdrop-filter:blur(4px)}
@media(max-width:900px){
  .brand-hero .brand-hero-bg{background-position:center;opacity:.35}
  .brand-hero .brand-hero-bg::after{background:linear-gradient(180deg,rgba(246,249,255,.85),rgba(246,249,255,.6))}
}
.rich{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow);margin-bottom:24px}
.rich h3{font-size:26px;font-weight:800;margin-bottom:8px}
.rich p{color:var(--ink-soft);font-size:16px}
.rich img{border-radius:14px;margin-top:18px}

/* 登录 */
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:120px 20px 60px;background:linear-gradient(160deg,#eef3fb,#f6f9ff)}
.login-card{background:#fff;border-radius:24px;box-shadow:var(--shadow-lg);width:min(420px,100%);padding:46px;border:1px solid var(--line)}
.login-card h2{font-size:26px;font-weight:800;text-align:center}
.login-card .tip{text-align:center;color:var(--ink-mute);font-size:14px;margin:8px 0 28px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--ink-soft)}
.field input{width:100%;padding:13px 16px;border:1px solid var(--line);border-radius:12px;font-size:15px;transition:.2s;background:var(--bg)}
.field input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(47,107,255,.12)}
.login-msg{text-align:center;font-size:14px;margin-top:14px;min-height:20px}
.login-msg.err{color:#e04a4a}.login-msg.ok{color:var(--brand-2)}
.full{width:100%;justify-content:center}

/* ---------- 响应式 ---------- */
@media(max-width:960px){
  .hero-inner{grid-template-columns:1fr}
  .hero-visual{height:400px;order:-1}
  .brand-row,.brand-row.flip{grid-template-columns:1fr;gap:34px}
  .brand-row.flip .brand-media{order:0}
  .brand-media{height:300px}
  .news-list{grid-template-columns:1fr}
  .news-big{grid-template-columns:1fr}
  .news-big .nc{height:200px}
  .footer-inner{grid-template-columns:1fr 1fr}
  .nav-links{position:fixed;top:84px;right:0;flex-direction:column;background:#fff;width:220px;padding:16px;
    box-shadow:var(--shadow-lg);border-radius:0 0 0 16px;transform:translateX(120%);transition:.3s}
  .nav-links.open{transform:none}
  .nav-toggle{display:grid;place-items:center;width:42px;height:42px;border-radius:10px;background:var(--bg-soft);cursor:pointer;font-size:20px}
  .hero-stats{gap:26px}
}

/* ========== 创造栗导航下拉 ========== */
.nav-item{position:relative}
.nav-item>a{display:inline-flex;align-items:center;gap:3px}
.nav-item .caret{font-size:11px;transition:.25s;opacity:.55}
.nav-item:hover .caret{transform:rotate(180deg)}
.drop{position:absolute;top:calc(100% + 6px);left:50%;transform:translateX(-50%) translateY(8px);opacity:0;visibility:hidden;
  background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-lg);padding:8px;
  min-width:170px;display:flex;flex-direction:column;z-index:130;transition:.22s}
.nav-item:hover .drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.drop a{padding:10px 16px;border-radius:9px;font-size:14px;color:var(--ink-soft);text-align:left;white-space:nowrap}
.drop a:hover{background:var(--bg-soft);color:var(--brand)}
.drop a.cur{color:var(--brand);font-weight:700;background:var(--bg-soft)}

/* ========== 品牌内页头 ========== */
.page-hero{padding:158px 0 72px;background:linear-gradient(180deg,#edf3ff 0%,#fff 100%);position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;right:-140px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,#dbe7fb 0%,transparent 68%)}
.page-hero::after{content:"";position:absolute;left:-100px;bottom:-160px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,194,168,.10) 0%,transparent 70%)}
.page-hero .kick{position:relative}
.page-hero h1{position:relative;font-size:clamp(36px,4.6vw,54px);font-weight:900;margin:14px 0 16px}
.page-hero .lead{position:relative;color:var(--ink-soft);font-size:17px;max-width:640px;line-height:1.8}
.page-hero .brand-chip{position:relative;display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:13px;font-weight:700;color:var(--brand);background:#fff;border:1px solid #d5e2f8;padding:5px 15px;border-radius:99px;box-shadow:var(--shadow)}

@media(max-width:960px){
  .nav-links .nav-item .drop{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;border:none;
    padding:0 0 6px 20px;min-width:0}
  .nav-links .nav-item .drop a{padding:8px 14px}
  .page-hero{padding:130px 0 54px}
}

/* ========== 图底内页头（所有内页统一：必须有背景图）========== */
.hero-img{position:relative;padding:158px 0 96px;overflow:hidden;background:#eef4ff}
.hero-img .bg{position:absolute;inset:0;background-position:right center;background-size:cover;background-repeat:no-repeat}
.hero-img::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(244,249,255,.97) 0%,rgba(244,249,255,.9) 38%,rgba(244,249,255,.2) 76%,rgba(244,249,255,0) 100%)}
.hero-img .container{position:relative;z-index:1}
.hero-img h1{font-size:clamp(34px,4.2vw,50px);font-weight:900;margin:14px 0}
.hero-img .lead{color:var(--ink-soft);font-size:17px;max-width:560px;line-height:1.8}
.hero-img .brand-chip{margin-bottom:2px}
@media(max-width:960px){.hero-img{padding:130px 0 70px}.hero-img::after{background:rgba(244,249,255,.84)}}