/* ============================================================
   ng28 官网 全站样式表
   上海ng28科技有限公司 · 科技岗位资讯 / App注册与下载
   仅供本站页面使用，无外部依赖
   ============================================================ */

:root{
  --c-navy-900:#060b1a;
  --c-navy-800:#0a1330;
  --c-navy-700:#101c40;
  --c-navy-600:#162553;
  --c-blue-500:#2f6bff;
  --c-blue-400:#4d8dff;
  --c-cyan-400:#22e0d6;
  --c-cyan-300:#63f2e8;
  --c-purple-500:#8b5cf6;
  --c-purple-400:#a78bfa;
  --c-orange-400:#ff9d4d;
  --c-green-400:#34d399;
  --c-red-400:#f87171;
  --c-warm-white:#f7f7fb;
  --c-silver-200:#d8dded;
  --c-silver-300:#b8c0d9;
  --c-silver-600:#5c6580;
  --c-ink-900:#0c1224;
  --c-ink-700:#1c2440;

  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:22px;
  --shadow-card:0 10px 30px rgba(6,11,26,.35);
  --shadow-soft:0 4px 16px rgba(6,11,26,.18);
  --max-width:1280px;
  --font-base:"PingFang SC","Microsoft YaHei","Segoe UI",Helvetica,Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-base);
  background:var(--c-warm-white);
  color:var(--c-ink-900);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-blue-500);text-decoration:none;}
a:hover{text-decoration:underline;}
ul,ol{padding-left:1.4em;}
h1,h2,h3,h4{color:var(--c-ink-900);line-height:1.35;margin:0 0 .6em;}
p{margin:0 0 1em;}
.container{max-width:var(--max-width);margin:0 auto;padding:0 20px;}
section{padding:56px 0;}
.section-tight{padding:32px 0;}
.section-alt{background:linear-gradient(180deg,#eef1fb 0%,#f7f7fb 100%);}
.section-dark{
  background:radial-gradient(1200px 600px at 20% -10%,rgba(139,92,246,.25),transparent 60%),
             radial-gradient(900px 500px at 90% 10%,rgba(34,224,214,.18),transparent 55%),
             linear-gradient(160deg,var(--c-navy-900),var(--c-navy-700));
  color:var(--c-silver-200);
}
.section-dark h2,.section-dark h3{color:#fff;}
.section-dark a{color:var(--c-cyan-300);}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--c-cyan-400);
  background:rgba(34,224,214,.12);
  border:1px solid rgba(34,224,214,.35);
  border-radius:999px;
  padding:4px 14px;
  margin-bottom:14px;
}
.section-title{font-size:28px;margin-bottom:10px;}
.section-desc{color:var(--c-silver-600);max-width:760px;margin-bottom:28px;}
.section-dark .section-desc{color:var(--c-silver-300);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(6,11,26,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-bar{
  max-width:var(--max-width);margin:0 auto;padding:12px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:20px;}
.brand img{width:36px;height:36px;}
.brand:hover{text-decoration:none;}
.nav-toggle{
  display:none;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.2);
  border-radius:8px;
  padding:8px 12px;
  color:#fff;
  cursor:pointer;
  font-size:16px;
}
.nav-links{display:flex;flex-wrap:wrap;gap:4px;list-style:none;margin:0;padding:0;}
.nav-links a{
  display:block;
  color:var(--c-silver-200);
  padding:10px 14px;
  border-radius:8px;
  font-size:14.5px;
  white-space:nowrap;
}
.nav-links a:hover,.nav-links a.active{
  background:rgba(79,141,255,.18);
  color:#fff;
  text-decoration:none;
}
.nav-links a.active{border:1px solid rgba(99,242,232,.4);}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  font-size:13.5px;color:var(--c-silver-600);
  background:#eef1fb;border-bottom:1px solid #e2e6f5;
}
.breadcrumb .container{padding-top:10px;padding-bottom:10px;}
.breadcrumb a{color:var(--c-blue-500);}
.breadcrumb span[aria-current]{color:var(--c-ink-900);font-weight:600;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:64px 0 48px;}
.hero .container{
  display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center;
}
.hero-eyebrow{color:var(--c-cyan-300);}
.hero h1{font-size:34px;color:#fff;margin-bottom:16px;}
.hero p.lead{font-size:16.5px;color:var(--c-silver-300);max-width:560px;}
.hero-figure{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-card);border:1px solid rgba(255,255,255,.12);}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;border-radius:999px;font-size:14.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:linear-gradient(135deg,var(--c-blue-500),var(--c-purple-500));color:#fff;}
.btn-primary:hover{opacity:.92;}
.btn-outline{border-color:rgba(255,255,255,.35);color:#fff;background:transparent;}
.btn-outline:hover{background:rgba(255,255,255,.1);}
.btn-ghost{border-color:var(--c-silver-300);color:var(--c-ink-900);background:#fff;}
.btn-ghost:hover{background:#eef1fb;}
.btn-sm{padding:7px 16px;font-size:13px;}

/* ---------- 卡片网格 ---------- */
.grid{display:grid;gap:22px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-5{grid-template-columns:repeat(5,1fr);}

.card{
  background:#fff;border:1px solid #e6e9f5;border-radius:var(--radius-md);
  padding:22px;box-shadow:var(--shadow-soft);
}
.card h3{font-size:17.5px;margin-bottom:8px;}
.card p{color:var(--c-silver-600);font-size:14.5px;margin-bottom:0;}
.card .tag-row{margin-bottom:10px;}

.card-dark{
  background:linear-gradient(160deg,var(--c-navy-700),var(--c-navy-800));
  border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-md);
  padding:22px;color:var(--c-silver-200);
}
.card-dark h3{color:#fff;}
.card-dark .disclaimer{color:var(--c-silver-300);}

.job-card{
  background:#fff;border:1px solid #e6e9f5;border-radius:var(--radius-md);
  padding:22px;box-shadow:var(--shadow-soft);display:flex;flex-direction:column;gap:10px;
}
.job-card h3{font-size:18px;margin-bottom:0;}
.job-card .job-meta{display:flex;flex-wrap:wrap;gap:8px;}
.job-card .job-disclaimer{
  font-size:12.5px;color:var(--c-orange-400);background:#fff4e8;border:1px solid #ffdcb3;
  border-radius:8px;padding:8px 10px;margin-top:auto;
}

.tag{
  display:inline-block;font-size:12px;padding:3px 10px;border-radius:999px;
  background:#eef1fb;color:var(--c-blue-500);border:1px solid #d7deef;
}
.tag-cyan{background:rgba(34,224,214,.12);color:#0d9488;border-color:rgba(34,224,214,.35);}
.tag-purple{background:rgba(139,92,246,.12);color:#7c3aed;border-color:rgba(139,92,246,.3);}
.tag-orange{background:#fff2e2;color:#c2650a;border-color:#ffdcb3;}
.tag-green{background:#e6faf1;color:#0f9d64;border-color:#b9f0d6;}

.status-pill{font-size:12px;padding:3px 10px;border-radius:999px;font-weight:600;}
.status-live{background:#e6faf1;color:#0f9d64;}
.status-review{background:#fff2e2;color:#c2650a;}
.status-plan{background:#eef1fb;color:#3b4faa;}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto;border-radius:var(--radius-md);border:1px solid #e6e9f5;box-shadow:var(--shadow-soft);}
table{width:100%;border-collapse:collapse;min-width:640px;background:#fff;}
table caption{text-align:left;padding:14px 18px;font-weight:700;background:#f5f7fd;}
th,td{padding:12px 16px;text-align:left;border-bottom:1px solid #eef1f8;font-size:14px;vertical-align:top;}
thead th{background:var(--c-navy-800);color:#fff;font-weight:600;white-space:nowrap;}
tbody tr:hover{background:#f7f9ff;}
.risk-cell{color:#b91c1c;}
.safe-cell{color:#0f9d64;}

/* ---------- 时间线 / 发展历程 ---------- */
.timeline{list-style:none;margin:0;padding:0;display:grid;gap:18px;}
.timeline li{
  display:grid;grid-template-columns:56px 1fr;gap:16px;
  background:#fff;border:1px solid #e6e9f5;border-radius:var(--radius-md);padding:18px;
  box-shadow:var(--shadow-soft);
}
.timeline .step-num{
  width:44px;height:44px;border-radius:50%;
  background:linear-gradient(135deg,var(--c-blue-500),var(--c-cyan-400));
  color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;
}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:10px;}
.faq-item{border:1px solid #e6e9f5;border-radius:var(--radius-sm);background:#fff;overflow:hidden;}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  padding:16px 18px;font-size:15.5px;font-weight:600;color:var(--c-ink-900);
  display:flex;justify-content:space-between;align-items:center;gap:12px;
}
.faq-q::after{content:"+";font-size:20px;color:var(--c-blue-500);transition:transform .2s;}
.faq-item.open .faq-q::after{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;padding:0 18px;color:var(--c-silver-600);font-size:14.5px;}
.faq-item.open .faq-a{padding-bottom:16px;}

/* ---------- 提示 / 声明框 ---------- */
.notice{
  border-radius:var(--radius-md);padding:16px 20px;font-size:14px;margin:18px 0;
  border:1px solid; display:flex; gap:12px; align-items:flex-start;
}
.notice strong{white-space:nowrap;}
.notice-warning{background:#fff7e8;border-color:#ffdcb3;color:#8a4b06;}
.notice-info{background:#eef4ff;border-color:#c9dbff;color:#1d3f91;}
.notice-danger{background:#fdecec;border-color:#f8c8c8;color:#8f1d1d;}
.notice-neutral{background:#f2f3f9;border-color:#dfe3f2;color:#3a3f55;}
.notice .icon{font-size:20px;line-height:1;}

/* ---------- 文章列表 / 新闻 ---------- */
.article-card{
  background:#fff;border:1px solid #e6e9f5;border-radius:var(--radius-md);
  overflow:hidden;box-shadow:var(--shadow-soft);display:flex;flex-direction:column;
}
.article-card .thumb{aspect-ratio:16/9;background:#eef1fb;}
.article-card .body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1;}
.article-card .meta-row{display:flex;flex-wrap:wrap;gap:8px;font-size:12px;color:var(--c-silver-600);}
.article-card h3{font-size:16.5px;margin:2px 0 4px;}
.article-card p{color:var(--c-silver-600);font-size:14px;flex:1;}
.article-full{
  background:#fff;border:1px solid #e6e9f5;border-radius:var(--radius-md);
  padding:26px;box-shadow:var(--shadow-soft);margin-bottom:26px;scroll-margin-top:90px;
}
.article-full .meta-row{display:flex;flex-wrap:wrap;gap:8px;font-size:12.5px;color:var(--c-silver-600);margin-bottom:12px;}
.article-full figure{margin:16px 0;}
.article-full figcaption{font-size:12.5px;color:var(--c-silver-600);margin-top:8px;}
.article-full .source-line{font-size:13px;color:var(--c-silver-600);border-top:1px dashed #e2e6f5;margin-top:16px;padding-top:12px;}
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px;}
.filter-btn{
  border:1px solid #d7deef;background:#fff;border-radius:999px;padding:8px 16px;
  font-size:13.5px;cursor:pointer;color:var(--c-ink-900);
}
.filter-btn.active{background:var(--c-navy-800);color:#fff;border-color:var(--c-navy-800);}
.hidden{display:none !important;}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-navy-900);color:var(--c-silver-300);padding:44px 0 22px;margin-top:40px;}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:28px;margin-bottom:28px;}
.footer-col h4{color:#fff;font-size:14.5px;margin-bottom:12px;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;}
.footer-col a{color:var(--c-silver-300);font-size:13.5px;}
.footer-col a:hover{color:#fff;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:18px;margin-bottom:10px;}
.footer-brand img{width:30px;height:30px;}
.footer-desc{font-size:13.5px;color:var(--c-silver-300);max-width:340px;}
.footer-info{font-size:12.5px;color:var(--c-silver-600);border-top:1px solid rgba(255,255,255,.08);padding-top:18px;display:flex;flex-wrap:wrap;gap:6px 18px;}
.footer-bottom{font-size:12.5px;color:var(--c-silver-600);text-align:center;margin-top:16px;}

/* ---------- 返回顶部 ---------- */
.back-to-top{
  position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;
  background:var(--c-navy-800);color:#fff;border:1px solid rgba(255,255,255,.2);
  display:flex;align-items:center;justify-content:center;font-size:18px;cursor:pointer;
  box-shadow:var(--shadow-card);opacity:0;pointer-events:none;transition:opacity .2s;z-index:90;
}
.back-to-top.show{opacity:1;pointer-events:auto;}

/* ---------- 面板 / 数据后台风格 ---------- */
.panel{
  background:linear-gradient(160deg,rgba(16,28,64,.9),rgba(10,19,48,.92));
  border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);
  padding:26px;color:var(--c-silver-200);
}
.panel h3{color:#fff;}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:18px 0;}
.stat-box{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-sm);padding:14px 16px;}
.stat-box .num{font-size:24px;font-weight:700;color:var(--c-cyan-300);}
.stat-box .label{font-size:12.5px;color:var(--c-silver-300);}

/* ---------- 复选表单 / 本地偏好 ---------- */
.pref-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;}
.pref-item{
  display:flex;align-items:center;gap:10px;background:#fff;border:1px solid #e6e9f5;
  border-radius:var(--radius-sm);padding:12px 14px;font-size:14px;cursor:pointer;
}
.pref-item input{width:16px;height:16px;}

/* ---------- 注册演示表单 ---------- */
.register-demo{
  display:grid;gap:16px;background:#fff;border:1px solid #e6e9f5;border-radius:var(--radius-md);
  padding:24px;box-shadow:var(--shadow-soft);max-width:520px;
}
.register-demo label{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--c-ink-900);font-weight:600;}
.register-demo input{
  padding:11px 12px;border-radius:8px;border:1px solid #d7deef;background:#f5f7fd;
  color:var(--c-silver-600);font-size:14px;
}

/* ---------- 小游戏 / 练习区 ---------- */
.game-panel{
  background:linear-gradient(160deg,var(--c-navy-800),var(--c-navy-900));
  border-radius:var(--radius-lg);padding:26px;color:#fff;border:1px solid rgba(255,255,255,.1);
}
.game-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.game-tab-btn{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);color:var(--c-silver-200);
  padding:8px 14px;border-radius:999px;font-size:13px;cursor:pointer;
}
.game-tab-btn.active{background:linear-gradient(135deg,var(--c-blue-500),var(--c-cyan-400));color:#06121f;border-color:transparent;font-weight:600;}
.game-stage{display:none;}
.game-stage.active{display:block;}
.game-question{background:rgba(255,255,255,.06);border-radius:var(--radius-md);padding:18px;margin-bottom:14px;}
.game-options{display:grid;gap:10px;margin-top:12px;}
.game-option{
  text-align:left;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.16);
  color:#fff;border-radius:8px;padding:10px 14px;cursor:pointer;font-size:14px;
}
.game-option:hover{background:rgba(255,255,255,.12);}
.game-option.correct{background:rgba(52,211,153,.25);border-color:#34d399;}
.game-option.wrong{background:rgba(248,113,113,.25);border-color:#f87171;}
.game-feedback{font-size:13.5px;color:var(--c-cyan-300);min-height:20px;margin-top:10px;}
.game-score{font-size:13.5px;color:var(--c-silver-300);}
.game-nav{display:flex;gap:10px;margin-top:14px;}

/* ---------- 收藏按钮 ---------- */
.fav-btn{
  border:1px solid #d7deef;background:#fff;border-radius:999px;padding:6px 14px;font-size:12.5px;
  cursor:pointer;color:var(--c-ink-900);
}
.fav-btn.active{background:#fff2e2;border-color:#ffdcb3;color:#c2650a;}

/* ---------- 版本表 / 兼容表强调列 ---------- */
.compat-yes{color:#0f9d64;font-weight:600;}
.compat-no{color:#b91c1c;font-weight:600;}

/* ---------- 面板内声明 ---------- */
.disclaimer-box{
  font-size:13px;color:var(--c-silver-600);background:#f2f3f9;border:1px dashed #c9d0e8;
  border-radius:var(--radius-sm);padding:12px 16px;margin:16px 0;
}
.section-dark .disclaimer-box{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.2);color:var(--c-silver-300);}

/* ---------- 响应式 ---------- */
@media (max-width:1040px){
  .grid-5{grid-template-columns:repeat(3,1fr);}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:860px){
  .hero .container{grid-template-columns:1fr;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .stat-row{grid-template-columns:repeat(2,1fr);}
  .pref-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:720px){
  .nav-toggle{display:inline-flex;}
  .nav-links{
    display:none;flex-direction:column;width:100%;
    position:absolute;top:64px;left:0;background:var(--c-navy-900);
    padding:10px 20px 18px;border-bottom:1px solid rgba(255,255,255,.1);
  }
  .nav-links.open{display:flex;}
  .nav-bar{position:relative;}
  .grid-2,.grid-3,.grid-4,.grid-5{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .hero h1{font-size:26px;}
  .section-title{font-size:23px;}
  .pref-grid{grid-template-columns:1fr;}
}