:root{
  --cream:#eef4ff;
  --paper:rgba(255,255,255,.94);
  --ink:#101828;
  --muted:#667085;
  --line:#d7e1f0;
  --teal:#0f766e;
  --teal-dark:#115e59;
  --orange:#f97316;
  --soft:#f7faff;
  --shadow:0 18px 46px rgba(15,23,42,.10);
  --radius:24px;
  --max:1200px;
  --sidebar:320px;
  --font-body:"Segoe UI",system-ui,-apple-system,BlinkMacSystemFont,sans-serif;
  --font-ui:"Segoe UI",system-ui,-apple-system,BlinkMacSystemFont,sans-serif;
}
.mode-dark{
  --cream:#07111f;
  --paper:rgba(13,23,37,.92);
  --ink:#e5edf8;
  --muted:#98a7bb;
  --line:#223145;
  --teal:#38bdf8;
  --teal-dark:#7dd3fc;
  --orange:#fb923c;
  --soft:#0d1828;
  --shadow:0 18px 46px rgba(2,6,23,.45);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  background:
    radial-gradient(circle at top left,rgba(249,115,22,.10),transparent 28%),
    radial-gradient(circle at top right,rgba(56,189,248,.12),transparent 26%),
    linear-gradient(180deg,#f7fbff,#edf4ff 40%,var(--cream));
  color:var(--ink);
  line-height:1.8;
  font-size:17px;
}
.mode-dark body,
body.mode-dark{
  background:
    radial-gradient(circle at top left,rgba(56,189,248,.12),transparent 28%),
    radial-gradient(circle at top right,rgba(249,115,22,.08),transparent 24%),
    linear-gradient(180deg,#07111f,#0b1422 40%,var(--cream));
}
a{color:var(--teal);text-decoration:none}
a:hover{color:var(--teal-dark)}
img{max-width:100%;height:auto;display:block}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}

.site-header{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(18px);
  background:rgba(246,249,255,.78);
  border-bottom:1px solid rgba(222,215,204,.9);
}
.header-inner{
  max-width:var(--max);margin:0 auto;padding:14px 20px;
  display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;
}
.site-logo{font-family:var(--font-ui);font-size:1.55rem;font-weight:900;color:var(--ink);letter-spacing:.02em}
.logo-img{max-height:42px;width:auto}
.site-nav{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;align-items:center}
.site-nav a{
  font-family:var(--font-ui);font-size:.83rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;
  padding:10px 12px;border-radius:999px;color:#46505f;
}
.site-nav a:hover{background:rgba(15,118,110,.08);color:var(--teal-dark)}
.nav-more{position:relative}
.nav-more-toggle{
  border:none;background:transparent;cursor:pointer;
  font-family:var(--font-ui);font-size:.83rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;
  padding:10px 12px;border-radius:999px;color:#46505f;
}
.nav-more-toggle:hover{background:rgba(15,118,110,.08);color:var(--teal-dark)}
.nav-more-menu{
  display:none;position:absolute;top:calc(100% + 10px);right:0;min-width:220px;z-index:30;
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px;box-shadow:0 20px 40px rgba(15,23,42,.12);
}
.nav-more.open .nav-more-menu{display:grid;gap:4px}
.nav-more-menu a{
  text-transform:none;letter-spacing:0;font-size:.9rem;font-weight:700;padding:10px 12px;border-radius:12px;
}
.nav-toggle{
  display:none;border:1px solid var(--line);background:var(--paper);border-radius:999px;
  padding:10px 14px;font-family:var(--font-ui);font-weight:800;color:var(--ink);
}

.site-wrapper{
  display:grid;grid-template-columns:minmax(0,1fr) var(--sidebar);gap:28px;
  max-width:var(--max);margin:28px auto;padding:0 20px;align-items:start;
}
.main-content,.sidebar{min-width:0}

.page-hero{
  position:relative;overflow:hidden;background:linear-gradient(135deg,#0f172a,#155eef 55%,#f97316);
  color:#fff;padding:40px;border-radius:28px;box-shadow:var(--shadow);margin-bottom:26px;
}
.page-hero::after{
  content:"";position:absolute;inset:auto -20% -40% auto;width:280px;height:280px;
  background:radial-gradient(circle,rgba(255,255,255,.18),transparent 60%);
}
.page-hero h1{font-family:var(--font-ui);font-size:clamp(2rem,4vw,3.4rem);line-height:1.02;max-width:760px}
.page-hero p{margin-top:14px;max-width:720px;font-size:1.05rem;color:rgba(255,255,255,.88)}

.posts-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.post-card{
  background:var(--paper);border:1px solid rgba(215,225,240,.95);border-radius:26px;overflow:hidden;
  box-shadow:var(--shadow);display:flex;flex-direction:column;min-height:100%;
}
.post-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:#efe8dc}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-card-body{padding:22px 22px 24px}
.post-meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:12px}
.cat-badge{
  background:#e8faf6;color:var(--teal);border:1px solid rgba(15,118,110,.18);
  font-family:var(--font-ui);font-size:.7rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase;
  padding:5px 10px;border-radius:999px;
}
.post-date{font-family:var(--font-ui);font-size:.78rem;color:var(--muted);letter-spacing:.02em}
.post-card h2{font-size:1.38rem;line-height:1.3;margin-bottom:10px}
.post-card h2 a{color:var(--ink)}
.post-card h2 a:hover{text-decoration:none;color:var(--teal-dark)}
.post-excerpt{color:#4e5868;font-size:.96rem;margin-bottom:16px}
.read-more{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--font-ui);font-size:.84rem;font-weight:900;
  text-transform:uppercase;letter-spacing:.08em;color:var(--orange)
}

.single-post{
  background:var(--paper);border:1px solid rgba(215,225,240,.95);border-radius:30px;
  padding:34px;box-shadow:var(--shadow);overflow:hidden
}
.post-header{margin-bottom:24px;padding-bottom:24px;border-bottom:1px solid var(--line)}
.post-header h1{font-size:clamp(1.85rem,3.3vw,3rem);line-height:1.08;margin:14px 0 16px}
.post-lead{font-size:1.08rem;color:#4d5868;max-width:780px}
.hero-image{
  margin:20px 0 28px;border-radius:24px;overflow:hidden;border:1px solid var(--line);background:#ede5d8;
  box-shadow:0 10px 30px rgba(17,24,39,.08);
}
.hero-image img{width:100%;aspect-ratio:16/9;object-fit:cover}

.post-content{font-size:1.06rem;color:var(--ink)}
.post-content h2{
  font-family:var(--font-ui);font-size:1.68rem;line-height:1.2;margin:34px 0 14px;padding-top:4px;
}
.post-content h3{font-family:var(--font-ui);font-size:1.26rem;margin:24px 0 10px}
.post-content p{margin-bottom:16px}
.post-content ul,.post-content ol{margin:14px 0 18px 24px}
.post-content li{margin-bottom:7px}
.post-content a{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px}
.article-image{
  max-width:860px;margin:30px auto;border:1px solid var(--line);background:#f9f5ee;border-radius:22px;overflow:hidden;
  box-shadow:0 8px 24px rgba(17,24,39,.06)
}
.article-image img{width:100%;height:auto;object-fit:cover}
.article-image figcaption{
  padding:10px 14px;font-family:var(--font-ui);font-size:.78rem;color:var(--muted);text-align:center;
  border-top:1px solid var(--line)
}

.toc{
  margin:0 0 24px;padding:18px 20px;background:linear-gradient(180deg,#f8f3eb,#fefbf7);
  border:1px solid var(--line);border-radius:22px
}
.toc-title{font-family:var(--font-ui);font-size:.9rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase;margin-bottom:10px;color:#4c5766}
.toc-list{margin-left:20px}
.toc-list li{margin-bottom:8px}

.post-tags{
  margin-top:28px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;gap:10px;flex-wrap:wrap;align-items:center
}
.tags-label{font-family:var(--font-ui);font-size:.8rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.tag-link{
  background:#fff;border:1px solid var(--line);color:#4f5967;border-radius:999px;padding:7px 12px;
  font-family:var(--font-ui);font-size:.78rem;font-weight:700
}
.tag-link:hover{background:var(--teal);border-color:var(--teal);color:#fff}

.sidebar{display:flex;flex-direction:column;gap:20px}
.sidebar-widget{
  background:var(--paper);border:1px solid rgba(215,225,240,.95);border-radius:24px;padding:22px;box-shadow:var(--shadow)
}
.widget-title{
  font-family:var(--font-ui);font-size:.84rem;font-weight:900;text-transform:uppercase;letter-spacing:.1em;
  color:#5a6573;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line)
}
.cat-list,.recent-posts-list{list-style:none}
.cat-list li,.recent-posts-list li{
  padding:10px 0;border-bottom:1px dashed rgba(222,215,204,.9);display:flex;justify-content:space-between;gap:12px;align-items:flex-start
}
.recent-posts-list li{display:block}
.cat-list li:last-child,.recent-posts-list li:last-child{border-bottom:none}
.cat-count{
  flex-shrink:0;background:#f4ede2;border:1px solid var(--line);color:var(--muted);padding:2px 8px;border-radius:999px;
  font-family:var(--font-ui);font-size:.74rem;font-weight:800
}
.recent-posts-list a{color:var(--ink);font-size:.95rem;line-height:1.45}
.recent-date{display:block;color:var(--muted);font-family:var(--font-ui);font-size:.78rem;margin-top:4px}
.tags-cloud{display:flex;flex-wrap:wrap;gap:8px}

.related-posts{margin-top:36px}
.related-title{
  font-family:var(--font-ui);font-size:1rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase;
  margin-bottom:16px;color:#55616f
}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.related-card{
  background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:0 8px 24px rgba(17,24,39,.05)
}
.related-card a{display:block;color:var(--ink);font-size:1rem;font-weight:700;line-height:1.35}
.related-date{margin-top:6px;color:var(--muted);font-family:var(--font-ui);font-size:.78rem}

.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:18px;
  color:var(--muted);font-family:var(--font-ui);font-size:.82rem;text-transform:uppercase;letter-spacing:.08em
}
.breadcrumb .sep{color:#b9a995}

.pagination{display:flex;gap:8px;justify-content:center;margin-top:28px;flex-wrap:wrap}
.page-btn{
  display:inline-flex;align-items:center;justify-content:center;min-width:42px;height:42px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;background:#fff;color:#4e5868;font-family:var(--font-ui);font-weight:800
}
.page-btn:hover,.page-btn.active{background:var(--teal);border-color:var(--teal);color:#fff}

.site-footer{
  margin-top:48px;padding:42px 0 24px;background:linear-gradient(180deg,#172033,#0f172a);color:#d2d9e5
}
.footer-grid{
  display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:24px;padding-bottom:24px;border-bottom:1px solid rgba(148,163,184,.18)
}
.footer-logo{font-family:var(--font-ui);font-size:1.4rem;font-weight:900;color:#fff}
.footer-logo-img{max-height:44px;width:auto}
.site-footer strong{font-family:var(--font-ui);font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;color:#8fd6cb}
.site-footer ul{list-style:none;margin-top:10px}
.site-footer li{margin-bottom:8px}
.site-footer a{color:#d7e2f0}
.footer-bottom{padding-top:18px;font-family:var(--font-ui);font-size:.82rem;color:#9db0c5}

.alert{padding:16px 18px;border-radius:18px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
.alert-info{background:#eef8ff;border-color:#b6d7ff;color:#1d4ed8}
body.mode-light .site-header{background:rgba(246,249,255,.78)}
body.mode-dark .site-header{background:rgba(7,17,31,.82);border-bottom:1px solid rgba(34,49,69,.95)}
body.mode-dark .site-logo,
body.mode-dark .post-card h2 a,
body.mode-dark .recent-posts-list a,
body.mode-dark .related-card a{color:var(--ink)}
body.mode-dark .post-card,
body.mode-dark .single-post,
body.mode-dark .sidebar-widget,
body.mode-dark .related-card,
body.mode-dark .toc{border-color:#223145}
body.mode-dark .cat-badge{background:rgba(56,189,248,.12);color:#93c5fd;border-color:rgba(56,189,248,.24)}
body.mode-dark .page-btn,
body.mode-dark .tag-link,
body.mode-dark .related-card{background:#0f1b2d;color:var(--ink)}
body.mode-dark .toc,
body.mode-dark .article-image,
body.mode-dark .hero-image{background:#0d1828}
body.mode-dark .page-hero{background:linear-gradient(135deg,#020617,#0f172a 55%,#1d4ed8)}
body.mode-dark .post-thumb{background:#0f1b2d}
body.mode-dark .site-footer{background:linear-gradient(180deg,#020617,#08101c)}

@media(max-width:1080px){
  .site-wrapper{grid-template-columns:1fr}
  .sidebar{order:2}
  .main-content{order:1}
}
@media(max-width:860px){
  .header-inner{grid-template-columns:1fr auto}
  .site-nav{grid-column:1 / -1;justify-content:flex-start;display:none;padding-top:8px}
  .site-nav.open{display:flex}
  .nav-more{width:100%}
  .nav-more-menu{
    position:static;min-width:0;width:100%;margin-top:6px;
    box-shadow:none;border-radius:14px;
  }
  .nav-toggle{display:inline-flex}
  .posts-grid,.related-grid,.footer-grid{grid-template-columns:1fr}
  .single-post{padding:24px}
  .page-hero{padding:28px}
}
@media(max-width:640px){
  body{font-size:16px}
  .site-wrapper{padding:0 14px;margin:18px auto}
  .header-inner{padding:12px 14px}
  .page-hero h1{font-size:2rem}
  .post-card-body{padding:18px}
  .post-header h1{font-size:2rem}
  .single-post{padding:18px;border-radius:22px}
  .post-content h2{font-size:1.42rem}
  .post-content h3{font-size:1.14rem}
}