:root{
  --font-serif:'Noto Serif SC',Georgia,'Times New Roman',serif;
  --font-sans:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --bg:#faf8f5;--bg-alt:#f4f0ea;--bg-code:#f0ebe2;
  --fg:#1c1917;--fg2:#57534e;--fg3:#a8a29e;
  --border:#e7e5e4;--border-light:#f0ebe6;
  --accent:#92400e;--accent2:#b45309;--accent-soft:rgba(146,64,14,.06);
  --shadow-sm:0 1px 3px rgba(28,25,23,.04);
  --shadow:0 4px 16px rgba(28,25,23,.06);
  --shadow-hover:0 8px 28px rgba(28,25,23,.1);
  --max-w:1080px;
  --side-w:280px;
  --gap:56px;
  --radius:8px;
  --transition:all .3s cubic-bezier(.4,0,.2,1);
}
[data-theme="dark"]{
  --bg:#1c1917;--bg-alt:#292524;--bg-code:#292524;
  --fg:#f5f5f4;--fg2:#d6d3d1;--fg3:#78716c;
  --border:#44403c;--border-light:#332e2b;
  --accent:#fbbf24;--accent2:#f59e0b;--accent-soft:rgba(251,191,36,.08);
  --shadow-sm:0 1px 3px rgba(0,0,0,.2);
  --shadow:0 4px 16px rgba(0,0,0,.3);
  --shadow-hover:0 8px 28px rgba(0,0,0,.4);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);background:var(--bg);color:var(--fg);line-height:1.75;font-size:15px;transition:background .3s,color .3s}
a{color:var(--accent);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--accent2)}
img{max-width:100%;display:block}

/* Reading Progress */
.reading-progress{position:fixed;top:0;left:0;height:2px;background:var(--accent);width:0;z-index:9999;transition:width .1s ease}

/* Topbar */
.topbar{position:sticky;top:0;z-index:100;background:rgba(250,248,245,.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
[data-theme="dark"] .topbar{background:rgba(28,25,23,.85)}
.topbar-inner{max-width:var(--max-w);margin:0 auto;padding:0 28px;height:56px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.topbar-title{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.topbar-mark{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--radius);background:var(--accent);color:#fff;font-family:var(--font-serif);font-size:1rem;font-weight:700;flex-shrink:0}
.topbar-name{font-family:var(--font-serif);font-size:1.05rem;font-weight:700;color:var(--fg);white-space:nowrap}
.topbar-title:hover{text-decoration:none}
.topbar-title:hover .topbar-name{color:var(--accent)}
.topbar-nav{display:flex;gap:4px;flex:1;justify-content:center}
.topbar-nav a{color:var(--fg2);font-size:.875rem;font-weight:500;padding:6px 14px;border-radius:6px;text-decoration:none;transition:var(--transition)}
.topbar-nav a:hover{color:var(--accent);background:var(--accent-soft);text-decoration:none}
.topbar-actions{display:flex;align-items:center;gap:6px;flex-shrink:0}
.theme-toggle,.menu-toggle{background:none;border:1px solid var(--border);border-radius:8px;cursor:pointer;color:var(--fg2);display:flex;align-items:center;justify-content:center;transition:var(--transition)}
.theme-toggle{width:36px;height:36px}
.menu-toggle{width:36px;height:36px;display:none}
.theme-toggle:hover,.menu-toggle:hover{color:var(--accent);border-color:var(--accent);background:var(--accent-soft)}
.theme-toggle .ico-sun{display:none}
.theme-toggle .ico-moon{display:block}
[data-theme="dark"] .theme-toggle .ico-sun{display:block}
[data-theme="dark"] .theme-toggle .ico-moon{display:none}

/* Mobile Menu */
.mobile-menu{display:none;flex-direction:column;padding:8px 28px 16px;background:var(--bg);border-bottom:1px solid var(--border)}
.mobile-menu a{color:var(--fg2);padding:10px 0;font-size:.9rem;text-decoration:none;border-bottom:1px solid var(--border-light)}
.mobile-menu a:last-child{border-bottom:none}
.mobile-menu a:hover{color:var(--accent);text-decoration:none}
.mobile-menu.open{display:flex}

/* Layout */
.site-content{min-height:calc(100vh - 220px)}
.wrapper{max-width:var(--max-w);margin:0 auto;padding:48px 28px;display:grid;grid-template-columns:1fr var(--side-w);gap:var(--gap)}
.content-area{min-width:0}

/* Welcome Banner */
.welcome{margin-bottom:48px;padding:48px 40px;background:linear-gradient(135deg,var(--bg-alt) 0%,var(--accent-soft) 100%);border:1px solid var(--border);border-radius:16px;position:relative;overflow:hidden}
.welcome::before{content:'';position:absolute;top:-40px;right:-40px;width:160px;height:160px;border-radius:50%;background:var(--accent-soft);opacity:.5}
.welcome-title{font-family:var(--font-serif);font-size:2rem;font-weight:700;line-height:1.3;margin-bottom:12px;letter-spacing:-.02em;position:relative}
.welcome-desc{font-size:.95rem;color:var(--fg2);line-height:1.7;max-width:520px;position:relative}
.welcome-meta{display:flex;gap:20px;margin-top:20px;font-size:.85rem;color:var(--fg3);position:relative}
.welcome-meta span{display:inline-flex;align-items:center;gap:6px}

/* Content Header */
.content-header{margin-bottom:36px;padding-bottom:16px;border-bottom:2px solid var(--fg)}
.content-heading{font-family:var(--font-serif);font-size:1.4rem;font-weight:700;letter-spacing:-.01em}
.content-desc{color:var(--fg2);font-size:.9rem;margin-top:8px}

/* Post List */
.post-list{display:flex;flex-direction:column}
.post-row{display:flex;gap:24px;padding:28px 0;border-bottom:1px solid var(--border-light);align-items:flex-start;transition:var(--transition)}
.post-row:first-child{padding-top:0}
.post-row:last-child{border-bottom:none}
.post-row:hover{padding-left:8px}
.post-row-main{flex:1;min-width:0}
.post-row-title{font-family:var(--font-serif);font-size:1.2rem;font-weight:700;line-height:1.45;margin-bottom:8px;letter-spacing:-.01em}
.post-row-title a{color:var(--fg);text-decoration:none;transition:var(--transition)}
.post-row-title a:hover{color:var(--accent);text-decoration:none}
.post-row-excerpt{font-size:.9rem;color:var(--fg2);line-height:1.7;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-row-meta{display:flex;align-items:center;gap:14px;font-size:.8rem;color:var(--fg3)}
.post-row-meta time,.post-row-meta span{display:inline-flex;align-items:center}
.post-row-cat{font-size:.75rem;font-weight:600;color:var(--accent);padding:2px 8px;background:var(--accent-soft);border-radius:4px;text-decoration:none}
.post-row-cat:hover{background:var(--accent);color:#fff;text-decoration:none}
.post-row-cover{flex-shrink:0;width:140px;height:94px;border-radius:var(--radius);overflow:hidden;display:block;box-shadow:var(--shadow-sm)}
.post-row-cover img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}
.post-row-cover:hover img{transform:scale(1.06)}
.post-row-cover:hover{box-shadow:var(--shadow-hover)}

/* Sidebar */
.side-panel{position:sticky;top:80px;align-self:start}
.side-block{margin-bottom:36px}
.side-block h3{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.12em;color:var(--fg3);margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid var(--border)}
.side-block ul{list-style:none}
.side-block li{margin-bottom:2px}
.side-block a{color:var(--fg2);font-size:.875rem;display:block;padding:7px 10px;border-radius:6px;text-decoration:none;transition:var(--transition)}
.side-block a:hover{color:var(--accent);background:var(--accent-soft);text-decoration:none}
.tag-wrap{display:flex;flex-wrap:wrap;gap:6px}
.tag-wrap a{padding:4px 12px;border:1px solid var(--border);border-radius:20px;font-size:.78rem;color:var(--fg2);text-decoration:none;transition:var(--transition)}
.tag-wrap a:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft);text-decoration:none}
.link-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
.link-card{display:block;padding:14px;border:1px solid var(--border);border-radius:var(--radius);text-decoration:none;transition:var(--transition)}
.link-card:hover{border-color:var(--accent);box-shadow:var(--shadow);text-decoration:none;transform:translateY(-2px)}
.link-card strong{display:block;font-size:.875rem;color:var(--fg);margin-bottom:2px}
.link-card small{font-size:.78rem;color:var(--fg3)}

/* Pager */
.pager{display:flex;align-items:center;gap:16px;margin-top:48px;padding-top:28px;border-top:1px solid var(--border)}
.pager-btn{padding:8px 18px;border:1px solid var(--border);border-radius:var(--radius);font-size:.85rem;color:var(--fg2);text-decoration:none;transition:var(--transition);font-weight:500}
.pager-btn:hover:not(.disabled){border-color:var(--accent);color:var(--accent);background:var(--accent-soft);text-decoration:none}
.pager-btn.disabled{opacity:.35;cursor:not-allowed}
.pager-info{font-size:.85rem;color:var(--fg3)}

/* Empty */
.empty-msg{text-align:center;padding:80px 0;color:var(--fg3);font-size:.95rem}

/* Footer */
.colophon{border-top:1px solid var(--border);padding:32px 0;background:var(--bg-alt)}
.colophon-inner{max-width:var(--max-w);margin:0 auto;padding:0 28px;display:flex;justify-content:space-between;align-items:center;font-size:.85rem;color:var(--fg3);gap:16px}
.colophon-brand{display:flex;align-items:center;gap:10px}
.colophon-mark{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:6px;background:var(--accent);color:#fff;font-family:var(--font-serif);font-size:.85rem;font-weight:700;flex-shrink:0}
.colophon-links{display:flex;gap:18px}
.colophon-links a{color:var(--fg3);text-decoration:none;transition:var(--transition)}
.colophon-links a:hover{color:var(--accent);text-decoration:none}

/* Back to Top */
.back-to-top{position:fixed;bottom:28px;right:28px;width:42px;height:42px;border-radius:50%;background:var(--accent);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:var(--transition);z-index:999}
.back-to-top.show{opacity:1;visibility:visible}
.back-to-top:hover{background:var(--accent2);transform:translateY(-3px);box-shadow:var(--shadow-hover)}

/* Responsive */
@media(max-width:768px){
  .wrapper{grid-template-columns:1fr;gap:40px}
  .side-panel{position:static;display:grid;grid-template-columns:1fr 1fr;gap:24px}
  .topbar-nav{display:none}
  .menu-toggle{display:flex}
  .post-row-cover{width:100px;height:68px}
  .welcome{padding:32px 24px}
  .welcome-title{font-size:1.5rem}
}
@media(max-width:640px){
  .wrapper{padding:32px 20px}
  .topbar-inner{padding:0 20px}
  .side-panel{grid-template-columns:1fr}
  .post-row{flex-direction:column-reverse;gap:14px}
  .post-row-cover{width:100%;height:180px}
  .post-row:hover{padding-left:0}
  .colophon-inner{flex-direction:column;gap:12px;text-align:center}
  .welcome{padding:28px 20px;margin-bottom:32px}
}