:root{--bg:#0e0e10;--bg-elevated:#1a1a1d;--fg:#f2f2f0;--fg-muted:#9a9a9e;--accent:#d94f3d;--border:#2a2a2e;--page-edge:transparent;--max-width:1100px;--header-h:60px}:root[data-theme="light"]{--bg:#ffffff;--bg-elevated:#f4f4f5;--fg:#17171a;--fg-muted:#6b6b70;--accent:#c8412f;--border:#e4e4e7;--page-edge:rgba(0,0,0,.16)}*,*::before,*::after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;line-height:1.6;transition:background-color .2s ease,color .2s ease}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(6px);border-bottom:1px solid var(--border)}.site-header .container{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:16px}.site-logo{font-weight:800;font-size:1.2rem;letter-spacing:.5px}.header-right{display:flex;align-items:center;gap:8px}.main-nav ul{list-style:none;display:flex;gap:24px;margin:0;padding:0}.main-nav a{font-size:.95rem;color:var(--fg-muted)}.main-nav a:hover,.main-nav a.is-active{color:var(--fg)}.nav-toggle{display:none;background:none;border:0;color:var(--fg);font-size:1.5rem;cursor:pointer}.theme-toggle{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:999px;border:1px solid var(--border);background:var(--bg-elevated);color:var(--fg);cursor:pointer;font-size:1rem;line-height:1;flex:none}.theme-toggle:hover{border-color:var(--fg-muted)}.theme-toggle .icon-moon{display:none}:root[data-theme="light"] .theme-toggle .icon-sun{display:none}:root[data-theme="light"] .theme-toggle .icon-moon{display:inline}@media (max-width:640px){.main-nav{display:none}.main-nav.is-open{display:block;position:absolute;top:60px;left:0;right:0;background:var(--bg-elevated);border-bottom:1px solid var(--border)}.main-nav.is-open ul{flex-direction:column;gap:0;padding:8px 20px 16px}.main-nav.is-open li{padding:10px 0;border-bottom:1px solid var(--border)}.nav-toggle{display:block}}.hero{min-height:calc(100svh - var(--header-h));display:flex;align-items:center;position:relative;padding:40px 0}.hero-grid{display:grid;grid-template-columns:1.1fr 0.9fr;gap:40px;align-items:center;width:100%}@media (max-width:800px){.hero-grid{grid-template-columns:1fr}}.hero h1{font-size:clamp(2rem, 5vw, 3.2rem);line-height:1.15;margin:0 0 16px}.hero p{color:var(--fg-muted);font-size:1.05rem;max-width:52ch}.hero-cta{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}.btn{display:inline-block;padding:12px 22px;border-radius:999px;font-weight:600;font-size:.95rem;border:1px solid #fff0;cursor:pointer}.btn-primary{background:var(--fg);color:var(--bg)}.btn-secondary{background:#fff0;color:var(--fg);border-color:var(--border)}.hero-cover img{border-radius:12px}.scroll-cue{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:4px;color:var(--fg-muted);font-size:.75rem;animation:hpln-bounce 2s ease-in-out infinite}@keyframes hpln-bounce{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,6px)}}#tap-list{scroll-margin-top:calc(var(--header-h) + 20px)}.section-heading{text-align:center;margin:0 0 32px}.section-title{font-size:1.6rem;margin:0 0 12px}.stat-pills{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.stat-pill{background:var(--bg-elevated);border:1px solid var(--border);border-radius:999px;padding:6px 14px;font-size:.82rem;color:var(--fg-muted)}.tap-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:18px;padding:0 0 48px}.tap-card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:10px;overflow:hidden;transition:transform .15s ease}.tap-card:hover{transform:translateY(-3px)}.tap-card img{aspect-ratio:3/4;object-fit:cover;width:100%;background:var(--border)}.tap-card-body{padding:10px 12px 14px}.tap-card-title{font-weight:700;font-size:.95rem;margin:0 0 4px}.tap-card-sub{color:var(--fg-muted);font-size:.8rem}.tap-detail{display:grid;grid-template-columns:260px 1fr;gap:40px;padding:40px 0 64px}@media (max-width:760px){.tap-detail{grid-template-columns:1fr}}.tap-detail-cover img{border-radius:10px}.tap-detail-meta{margin-top:16px;color:var(--fg-muted);font-size:.9rem}.tap-detail-meta div{margin-bottom:6px}.chuong-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--border)}.chuong-list li{border-bottom:1px solid var(--border)}.chuong-list a{display:flex;align-items:center;justify-content:space-between;padding:16px 4px}.chuong-list a:hover{background:var(--bg-elevated)}.chuong-list-num{color:var(--fg-muted);font-size:.85rem;margin-right:12px;min-width:56px}.chuong-list-title{flex:1;font-weight:600}.chuong-list-arrow{color:var(--fg-muted)}.reader-header{position:sticky;top:0;z-index:60;background:rgb(14 14 16 / .95);border-bottom:1px solid var(--border)}.reader-header .container{display:flex;align-items:center;justify-content:space-between;height:56px;gap:12px}.reader-header-left{display:flex;align-items:center;gap:12px;min-width:0}.reader-badge{background:var(--bg-elevated);border:1px solid var(--border);border-radius:6px;padding:4px 8px;font-size:.78rem;white-space:nowrap}.reader-title{font-size:.9rem;color:var(--fg-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.reader-header-right{display:flex;align-items:center;gap:10px}.reader-pg{font-size:.82rem;color:var(--fg-muted);white-space:nowrap}.reader-nav-btn{background:var(--bg-elevated);border:1px solid var(--border);color:var(--fg);padding:8px 14px;border-radius:999px;font-size:.85rem;cursor:pointer}.reader-nav-btn:disabled{opacity:.4;cursor:default}.reader-nav-btn-icon{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;padding:0;font-size:1.15rem;line-height:1}.chuong-top-nav{display:flex;justify-content:center;align-items:center;gap:12px;flex-wrap:wrap;margin:0 0 20px}.hoi-select{background:var(--bg-elevated);border:1px solid var(--border);color:var(--fg);padding:8px 14px;border-radius:999px;font-size:.85rem;cursor:pointer;max-width:180px}.reader-stage{padding:24px 0 80px;text-align:center;min-height:60vh}.reader-stage img{display:block;margin:0 auto 4px;max-width:100%;box-shadow:0 0 0 1px var(--page-edge)}.reader-stage img.is-hidden{display:none}.reader-hint{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--bg-elevated);border:1px solid var(--border);padding:8px 16px;border-radius:999px;font-size:.8rem;color:var(--fg-muted);opacity:0;transition:opacity .3s}.reader-hint.is-visible{opacity:1}.chuong-bottom-nav{display:flex;justify-content:center;align-items:center;gap:12px;flex-wrap:wrap;margin:32px 0 12px}.back-to-tap{display:inline-block;margin-top:20px;color:var(--fg-muted);font-size:.9rem}.page-content{padding:48px 0 64px;max-width:72ch;margin:0 auto}.page-content h1{font-size:2rem;margin-bottom:20px}.page-content p{color:var(--fg-muted)}.site-footer{border-top:1px solid var(--border);padding:32px 0;margin-top:40px}.site-footer .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;color:var(--fg-muted);font-size:.85rem}.site-footer a{color:var(--fg-muted)}.site-footer a:hover{color:var(--fg)}.post-index-heading{padding:48px 0 0}.post-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;padding:32px 0 64px}.post-card{display:flex;flex-direction:column;background:var(--bg-elevated);border:1px solid var(--border);border-radius:10px;overflow:hidden;transition:transform .15s 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img{width:100%;border-radius:12px;aspect-ratio:21/9;object-fit:cover}.post-meta{color:var(--fg-muted);font-size:.85rem;margin:-8px 0 28px}.post-content h2{font-size:1.35rem;margin:36px 0 14px;color:var(--fg)}.post-content h3{font-size:1.1rem;margin:28px 0 10px;color:var(--fg)}.post-content p{color:var(--fg-muted);margin:0 0 16px}.post-content strong{color:var(--fg)}.post-content blockquote{margin:20px 0;padding:14px 18px;border-left:3px solid var(--accent);background:var(--bg-elevated);border-radius:0 8px 8px 0;color:var(--fg-muted)}.post-content blockquote p{margin:0}.pagination{display:flex;justify-content:center;gap:10px;padding:0 0 48px}.pagination a,.pagination span{padding:8px 14px;border-radius:999px;border:1px solid var(--border);color:var(--fg-muted);font-size:.85rem}.pagination .current{background:var(--fg);color:var(--bg);border-color:var(--fg)}