/*
  Theme Name: Techcore
  Theme URI: https://www.techcoresys.com
  Description: 泰核创官网极简主题，蓝紫色调 DeepSeek 风格
  Version: 1.0
  Author: Techcore
  Author URI: https://www.techcoresys.com
*/

/* ===== Reset ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}

/* ===== Colors (DeepSeek) ===== */
:root{
  --brand-1:#4D6BFE;
  --brand-2:#3982FF;
  --brand-3:#2498FF;
  --bg-dark:#020E36;
  --white:#FFFFFF;
  --slate-400:#94a3b8;
  --slate-500:#64748b;
  --slate-600:#475569;
  --slate-700:#334155;
  --slate-800:#1e293b;
  --slate-900:#0f172a;
  --border:rgba(28,31,35,0.08);
}
body{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--slate-900);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  min-height:100vh;display:flex;flex-direction:column;
}
a{color:inherit;text-decoration:none}
.w{max-width:1200px;margin:0 auto;padding:0 32px}

/* ===== Hero (DeepSeek dark banner style) ===== */
.hero{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:137px 24px 120px;position:relative;overflow:hidden;
  background:var(--bg-dark);
}
.hero::before{
  content:'';position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%,rgba(77,107,254,0.12) 0%,transparent 50%),
    radial-gradient(ellipse 50% 30% at 30% 100%,rgba(57,130,255,0.06) 0%,transparent 50%),
    radial-gradient(ellipse 50% 30% at 70% 100%,rgba(36,152,255,0.04) 0%,transparent 50%);
}
.hero-content{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center}

/* Logo top-right */
.logo-whale{position:absolute;top:24px;left:32px;z-index:10}
.logo-whale img{width:128px;height:128px;object-fit:contain}

/* Brand name */
.hero-brand{
  font-size:clamp(48px,8vw,90px);font-weight:800;
  background:linear-gradient(135deg,#22d3ee 0%,var(--brand-1) 40%,#8b5cf6 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  margin-bottom:20px;letter-spacing:0.05em;line-height:1;
  animation:fadeInUp 0.8s ease-out, shimmer 3s ease-in-out infinite;
}
@keyframes fadeInUp{
  from{opacity:0;transform:translateY(20px)}
  to{opacity:1;transform:translateY(0)}
}
@keyframes shimmer{
  0%,100%{filter:brightness(1)}
  50%{filter:brightness(1.15)}
}

.hero-tagline{
  font-size:clamp(16px,2.5vw,22px);color:var(--slate-400);
  font-weight:500;margin-bottom:64px;max-width:600px;line-height:1.6;
}

/* Notification inside hero */
.hero-notify{
  font-size:13px;margin-bottom:65px;
}
.hero-notify a{
  color:var(--slate-400);text-decoration:none;transition:color 0.2s;
}
.hero-notify a:hover{
  color:#4D6BFE;
}

/* Two cards */
.hero-cards{
  display:grid;grid-template-columns:1fr 1fr;gap:24px;
  width:100%;
}
.hero-card{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:4px;padding:14px 60px;border-radius:16px;
  background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08);
  transition:all 0.3s;cursor:pointer;text-align:center;
}
.hero-card:hover{
  background:rgba(255,255,255,0.08);border-color:rgba(255,255,255,0.15);
  transform:translateY(-2px);
}
.hero-card .card-title{font-size:18px;font-weight:700;color:var(--white);letter-spacing:-0.01em}
.hero-card .card-desc{font-size:13px;color:var(--slate-400);line-height:1.5}
.hero-card .card-footer{font-size:13px;color:var(--brand-1);font-weight:500;margin-top:8px}

/* ===== Blog Section ===== */
.blog-sec{padding:80px 0;background:#f8fafc}
.blog-sec .sec-header{text-align:center;margin-bottom:48px}
.blog-sec .sec-header h2{font-size:clamp(24px,4vw,32px);font-weight:800;color:var(--slate-900);letter-spacing:-0.02em}
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1200px;margin:0 auto;padding:0 32px}
.blog-card{background:var(--white);border:1px solid var(--border);border-radius:16px;padding:28px 24px;transition:all 0.3s}
.blog-card:hover{border-color:#93b4ff;box-shadow:0 4px 20px rgba(77,107,254,0.06);transform:translateY(-2px)}
.blog-card h3{font-size:17px;font-weight:700;color:var(--slate-900);margin-bottom:8px;line-height:1.5}
.blog-card h3 a{color:var(--slate-900);transition:color 0.2s}
.blog-card h3 a:hover{color:var(--brand-1)}
.blog-card .blog-date{font-size:12px;color:var(--slate-400);margin-bottom:12px}
.blog-card .blog-excerpt{font-size:14px;color:var(--slate-500);line-height:1.7}
.blog-empty{text-align:center;padding:60px 0;color:var(--slate-400);font-size:15px}
.blog-more{text-align:center;margin-top:40px}
.blog-more a{display:inline-flex;align-items:center;gap:6px;color:var(--brand-1);font-size:14px;font-weight:500;transition:all 0.2s}
.blog-more a:hover{gap:10px}

/* ===== Footer (DeepSeek style) ===== */
.footer{border-top:1px solid #e2e8f0;padding:64px 0 32px;margin-top:auto}
.footer .w{max-width:1400px;margin:0 auto;padding:0 32px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:8px;margin-bottom:12px}
.footer-brand span{font-size:20px;font-weight:700;color:var(--brand-1);letter-spacing:0.05em}
.footer-desc{font-size:13px;color:var(--slate-400);line-height:1.7;max-width:220px}
.footer-col h4{font-size:20px;font-weight:700;color:var(--slate-700);margin-bottom:16px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.footer-col ul li{font-size:15px;color:var(--slate-700)}
.footer-col ul li a{color:var(--slate-700);transition:color 0.2s}
.footer-col ul li a:hover{color:var(--slate-900)}
.footer-bottom{max-width:1100px;margin:48px auto 0;padding:24px 32px 0;border-top:1px solid #f1f5f9;text-align:center;font-size:12px;color:var(--slate-400)}

/* ===== Post page ===== */
.post-page{padding:80px 0;max-width:760px;margin:0 auto}
.post-page h1{font-size:clamp(24px,4vw,36px);font-weight:800;color:var(--slate-900);margin-bottom:16px}
.post-page .post-meta{font-size:13px;color:var(--slate-400);margin-bottom:40px;padding-bottom:24px;border-bottom:1px solid #f1f5f9}
.post-content{font-size:16px;color:var(--slate-700);line-height:1.9}
.post-content p{margin-bottom:20px}
.post-content h2{font-size:24px;font-weight:700;margin:40px 0 16px}
.post-content h3{font-size:20px;font-weight:700;margin:32px 0 12px}
.post-content ul,.post-content ol{margin-bottom:20px;padding-left:24px}
.post-content li{margin-bottom:8px}
.post-content img{max-width:100%;border-radius:8px;margin:24px 0}
.post-content a{color:var(--brand-1);text-decoration:underline}
.post-content blockquote{border-left:3px solid var(--brand-1);padding:12px 20px;margin:24px 0;background:#f8fafc;border-radius:0 8px 8px 0}

/* ===== Responsive ===== */
@media(max-width:768px){
  .w{padding:0 20px}
  .hero-cards{grid-template-columns:1fr;max-width:360px}
  .blog-grid{grid-template-columns:1fr;padding:0 20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .hero{padding:120px 20px 100px}
  .logo-whale{top:16px;left:20px}
  .post-page{padding:60px 20px}
}
@media(max-width:480px){
  .footer-grid{grid-template-columns:1fr}
}