:root{
  --bg:#0A0F1E; --bg2:#0D1526; --ink:#F1F5F9; --muted:#8CA3BF; --muted2:#5B7292;
  --cyan:#38BDF8; --cyan2:#0EA5E9; --orange:#FB923C;
  --glass:rgba(148,180,255,.06); --stroke:rgba(148,180,255,.14);
  --r:20px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:"Be Vietnam Pro",system-ui,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--cyan);text-decoration:none}
.hidden{display:none!important}

.bg{position:fixed;inset:0;z-index:-1;background:linear-gradient(180deg,var(--bg2),var(--bg) 340px)}
.glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5}
.g1{width:560px;height:560px;background:radial-gradient(circle,#123a63,transparent 70%);top:-180px;left:-120px}
.g2{width:520px;height:520px;background:radial-gradient(circle,#3d2a10,transparent 70%);top:120px;right:-180px}
.grid-overlay{position:absolute;inset:0;background-image:linear-gradient(rgba(148,180,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(148,180,255,.05) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(ellipse 90% 480px at 50% 0,black,transparent)}

.ticker{background:rgba(56,189,248,.08);border-bottom:1px solid var(--stroke);overflow:hidden;white-space:nowrap;padding:7px 0}
.ticker-track{display:inline-block;padding-left:100%;animation:tick 90s linear infinite;font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--muted)}
.ticker-track b{color:var(--ink);font-weight:600}
.ticker-track i{font-style:normal;color:var(--cyan);margin:0 10px}
@keyframes tick{to{transform:translateX(-100%)}}
@media (prefers-reduced-motion:reduce){.ticker-track{animation:none;padding-left:0}}

.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);background:rgba(10,15,30,.78);border-bottom:1px solid var(--stroke)}
.nav-inner{max-width:1180px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink)}
.brand-mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(140deg,var(--cyan2),#1d4ed8);display:grid;place-items:center;font-weight:900;font-size:22px;color:#fff;box-shadow:0 6px 20px rgba(14,165,233,.35)}
.brand-text{font-weight:800;letter-spacing:.04em;line-height:1.05;font-size:17px}
.brand-text em{font-style:normal;color:var(--cyan)}
.brand-text small{display:block;font-family:"IBM Plex Mono",monospace;font-weight:500;font-size:10.5px;letter-spacing:.08em;color:var(--muted)}
.nav-links{display:flex;gap:22px;margin-left:auto}
.nav-links a{color:var(--muted);font-size:14px;font-weight:600}
.nav-links a:hover{color:var(--ink)}
.nav-badge{display:flex;align-items:center;gap:8px;font-family:"IBM Plex Mono",monospace;font-size:11.5px;color:var(--muted);border:1px solid var(--stroke);border-radius:999px;padding:6px 12px;background:var(--glass)}
.nav-badge .dot{width:7px;height:7px;border-radius:50%;background:#34d399;box-shadow:0 0 8px #34d399}
@media(max-width:820px){.nav-links{display:none}}

main{max-width:1180px;margin:0 auto;padding:0 20px}
.hero{padding:64px 0 34px;text-align:center}
.eyebrow{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);margin-bottom:18px}
.hero h1{font-size:clamp(38px,6vw,64px);font-weight:900;line-height:1.08;letter-spacing:-.01em}
.grad{background:linear-gradient(90deg,var(--cyan),#818cf8,var(--orange));-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{max-width:720px;margin:20px auto 0;color:var(--muted);font-size:17px}
.lede strong{color:var(--ink)}
.stats{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:34px}
.stat{background:var(--glass);border:1px solid var(--stroke);border-radius:16px;padding:14px 22px;min-width:150px}
.stat strong{display:block;font-size:22px;font-weight:800}
.stat span{font-size:12.5px;color:var(--muted)}

.section{padding:38px 0 8px}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:20px;border-bottom:1px solid var(--stroke);padding-bottom:14px}
.kicker{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan)}
.section-head h2{font-size:clamp(23px,3vw,30px);font-weight:800;margin-top:4px}
.updated{font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--muted2);text-align:right}

#lead-wrap{margin-bottom:16px}
.lead-card{display:grid;grid-template-columns:86px 1fr;gap:20px;background:linear-gradient(120deg,rgba(56,189,248,.12),var(--glass) 55%);border:1px solid var(--stroke);border-radius:var(--r);padding:26px}
.lead-mono{font-size:44px;font-weight:900;color:var(--cyan);opacity:.9;line-height:1}
.lead-card h3{font-size:clamp(20px,2.6vw,27px);font-weight:800;line-height:1.3}
.lead-card p{color:var(--muted);margin-top:8px;font-size:15px}
@media(max-width:640px){.lead-card{grid-template-columns:1fr}.lead-mono{font-size:30px}}

.featured-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:16px}
.news-card{background:var(--glass);border:1px solid var(--stroke);border-radius:var(--r);padding:20px;display:flex;flex-direction:column;gap:9px;transition:transform .18s ease,border-color .18s ease}
.news-card:hover{transform:translateY(-3px);border-color:rgba(56,189,248,.45)}
.news-card h3{font-size:16.5px;font-weight:700;line-height:1.4}
.news-card p{color:var(--muted);font-size:13.8px;flex:1}
.meta{display:flex;align-items:center;gap:10px;font-family:"IBM Plex Mono",monospace;font-size:11px;color:var(--muted2)}
.chip{display:inline-flex;align-items:center;gap:6px;font-family:"IBM Plex Mono",monospace;font-size:10.5px;font-weight:600;letter-spacing:.04em;padding:4px 10px;border-radius:999px;border:1px solid var(--stroke);background:rgba(255,255,255,.03);color:var(--ink)}
.chip::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--c,#38BDF8)}

.cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(252px,1fr));gap:16px}
.cat-card{text-align:left;cursor:pointer;background:var(--glass);border:1px solid var(--stroke);border-radius:var(--r);padding:22px;color:var(--ink);font-family:inherit;transition:transform .18s ease,border-color .18s ease;width:100%}
.cat-card:hover{transform:translateY(-3px);border-color:var(--c)}
.cat-card.active{border-color:var(--c);box-shadow:0 0 0 1px var(--c) inset,0 12px 30px rgba(0,0,0,.35)}
.cat-top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:14px}
.cat-mono{font-size:30px;font-weight:900;color:var(--c);line-height:1}
.cat-count{font-family:"IBM Plex Mono",monospace;font-size:11px;color:var(--muted2);border:1px solid var(--stroke);border-radius:999px;padding:3px 9px}
.cat-card h3{font-size:18px;font-weight:800}
.cat-card .tag{color:var(--muted);font-size:13px;margin:5px 0 12px;min-height:40px}
.cat-latest{font-size:12.8px;color:var(--muted);border-top:1px dashed var(--stroke);padding-top:11px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cat-latest b{color:var(--ink);font-weight:600}

.toolbar{margin-bottom:18px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chips button{cursor:pointer;font-family:"IBM Plex Mono",monospace;font-size:12px;font-weight:500;color:var(--muted);background:var(--glass);border:1px solid var(--stroke);border-radius:999px;padding:7px 14px;transition:all .15s}
.chips button:hover{color:var(--ink)}
.chips button.active{color:#06121f;background:var(--cyan);border-color:var(--cyan);font-weight:600}
.toolbar-row{display:flex;gap:14px;align-items:center;justify-content:space-between;margin-top:12px;flex-wrap:wrap}
.search{display:flex;align-items:center;gap:8px;background:var(--glass);border:1px solid var(--stroke);border-radius:999px;padding:8px 16px;min-width:260px;flex:0 1 340px}
.search span{color:var(--muted2)}
.search input{background:none;border:none;outline:none;color:var(--ink);font-family:inherit;font-size:14px;width:100%}
.search input::placeholder{color:var(--muted2)}

.feed{display:flex;flex-direction:column;gap:26px}
.day-group h4{font-family:"IBM Plex Mono",monospace;font-size:12.5px;letter-spacing:.14em;color:var(--cyan);margin-bottom:12px;display:flex;align-items:center;gap:12px}
.day-group h4::after{content:"";flex:1;height:1px;background:var(--stroke)}
.day-items{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:16px}
.empty{color:var(--muted);text-align:center;padding:34px 0}

.footer{max-width:1180px;margin:56px auto 0;padding:26px 20px 44px;border-top:1px solid var(--stroke);color:var(--muted);font-size:13.5px;text-align:center}
.footer .muted{color:var(--muted2);margin-top:6px;font-size:12.5px}

/* ===== Nâng cấp 03/11/2026: giao diện sáng, dashboard giá, đọc chi tiết ===== */
:root{ --panel:#0E1730; }
html[data-theme="light"]{
  --bg:#F2F6FC; --bg2:#E3EDFA; --ink:#10203A; --muted:#47607F; --muted2:#7188A6;
  --glass:rgba(16,48,96,.055); --stroke:rgba(16,48,96,.16); --panel:#FFFFFF;
}
html[data-theme="light"] .nav{background:rgba(255,255,255,.85)}
html[data-theme="light"] .glow{opacity:.22}
html[data-theme="light"] .grid-overlay{background-image:linear-gradient(rgba(16,48,96,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(16,48,96,.06) 1px,transparent 1px)}
html[data-theme="light"] .chip{background:rgba(16,48,96,.05)}
html[data-theme="light"] .ticker{background:rgba(14,165,233,.10)}
html[data-theme="light"] .cat-card.active{box-shadow:0 0 0 1px var(--c) inset,0 12px 30px rgba(16,48,96,.14)}

.theme-btn{cursor:pointer;width:38px;height:38px;border-radius:999px;border:1px solid var(--stroke);background:var(--glass);color:var(--ink);font-size:16px;line-height:1;display:grid;place-items:center;flex:0 0 auto}
.theme-btn:hover{border-color:var(--cyan)}

.price-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:14px}
.price-card{background:var(--glass);border:1px solid var(--stroke);border-radius:16px;padding:16px 18px}
.price-label{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);display:flex;justify-content:space-between;gap:8px}
.price-value{font-size:21px;font-weight:800;margin-top:7px;line-height:1.25}
.price-chg{font-size:12.5px;margin-top:5px;color:var(--muted)}
.price-chg.up{color:#34d399}.price-chg.down{color:#f87171}
html[data-theme="light"] .price-chg.up{color:#059669}
html[data-theme="light"] .price-chg.down{color:#dc2626}
.price-note{color:var(--muted2);font-size:12px;margin-top:12px}

.news-card{cursor:pointer}
.lead-card{cursor:pointer}
.read-more{font-family:"IBM Plex Mono",monospace;font-size:11px;font-weight:600;color:var(--cyan);letter-spacing:.04em}

.modal{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:16px}
.modal-backdrop{position:absolute;inset:0;background:rgba(4,8,18,.68)}
html[data-theme="light"] .modal-backdrop{background:rgba(15,30,55,.45)}
.modal-card{position:relative;background:var(--panel);border:1px solid var(--stroke);border-radius:22px;max-width:730px;width:100%;max-height:88vh;overflow-y:auto;padding:30px 30px 26px;box-shadow:0 30px 80px rgba(0,0,0,.45)}
.modal-close{position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:999px;border:1px solid var(--stroke);background:var(--glass);color:var(--ink);cursor:pointer;font-size:14px}
.modal-close:hover{border-color:var(--cyan)}
.modal-body h3{font-size:clamp(20px,2.8vw,27px);font-weight:800;line-height:1.32;margin:12px 0 10px;padding-right:34px}
.modal-lede{color:var(--muted);font-size:15.5px;line-height:1.65}
.modal-text{margin-top:16px;display:flex;flex-direction:column;gap:13px}
.modal-text p{font-size:15px;line-height:1.75;color:var(--ink)}
.modal-facts{margin-top:18px;background:var(--glass);border:1px solid var(--stroke);border-radius:14px;padding:16px 18px}
.modal-facts h5{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--cyan);margin-bottom:10px}
.modal-facts li{margin-left:18px;font-size:14px;line-height:1.6;color:var(--ink)}
.modal-src{margin-top:18px;font-family:"IBM Plex Mono",monospace;font-size:11.5px;color:var(--muted2);border-top:1px dashed var(--stroke);padding-top:12px}
.modal-note{margin-top:10px;font-size:12.5px;color:var(--muted2);font-style:italic}

/* ===== Nâng cấp đợt 2 (03/11/2026): lưu tin, tìm kiếm, đọc sâu, PWA ===== */
mark{background:rgba(250,204,21,.45);color:inherit;border-radius:3px;padding:0 1px}
html[data-theme="light"] mark{background:rgba(250,204,21,.6)}
.bm{margin-left:auto;cursor:pointer;background:none;border:none;font-size:14px;line-height:1;padding:2px 3px;filter:grayscale(1);opacity:.4;transition:all .15s}
.bm:hover{opacity:.85}
.bm.on{filter:none;opacity:1}
.saved-toggle{cursor:pointer;font-family:"IBM Plex Mono",monospace;font-size:12px;font-weight:500;color:var(--muted);background:var(--glass);border:1px solid var(--stroke);border-radius:999px;padding:8px 14px;white-space:nowrap}
.saved-toggle:hover{color:var(--ink)}
.saved-toggle.active{color:#06121f;background:var(--cyan);border-color:var(--cyan);font-weight:600}
.saved-toggle span{font-weight:700}
.search{position:relative}
.search-clear{cursor:pointer;background:none;border:none;color:var(--muted);font-size:12px;padding:2px 4px}
.load-more-wrap{text-align:center;margin:6px 0 2px}
.load-more{cursor:pointer;font-family:inherit;font-size:14px;font-weight:700;color:var(--ink);background:var(--glass);border:1px solid var(--stroke);border-radius:999px;padding:12px 28px;transition:all .15s}
.load-more:hover{border-color:var(--cyan);transform:translateY(-2px)}
.to-top{position:fixed;right:20px;bottom:22px;z-index:60;width:46px;height:46px;border-radius:999px;border:1px solid var(--stroke);background:var(--panel,#0E1730);color:var(--ink);font-size:19px;cursor:pointer;box-shadow:0 12px 30px rgba(0,0,0,.35)}
.to-top:hover{border-color:var(--cyan)}
.read-progress{position:absolute;top:0;left:22px;right:22px;height:3px;border-radius:99px;background:var(--stroke);overflow:hidden}
.read-progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--orange));transition:width .1s linear}
.modal-tools{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0 4px}
.modal-tools button{cursor:pointer;font-family:"IBM Plex Mono",monospace;font-size:11.5px;font-weight:600;color:var(--muted);background:var(--glass);border:1px solid var(--stroke);border-radius:999px;padding:7px 13px}
.modal-tools button:hover{color:var(--ink);border-color:var(--cyan)}
.modal-text p{font-size:calc(15px * var(--read-scale,1))}
.modal-lede{font-size:calc(15.5px * var(--read-scale,1))}
.modal-related{margin-top:20px;border-top:1px dashed var(--stroke);padding-top:16px}
.modal-related h5{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--cyan);margin-bottom:10px}
.rel-item{display:flex;justify-content:space-between;gap:14px;width:100%;text-align:left;cursor:pointer;background:var(--glass);border:1px solid var(--stroke);border-radius:12px;padding:11px 14px;margin-bottom:8px;color:var(--ink);font-family:inherit;font-size:13.5px;font-weight:600;line-height:1.45}
.rel-item:hover{border-color:var(--cyan)}
.rel-date{font-family:"IBM Plex Mono",monospace;font-size:11px;color:var(--muted2);font-weight:400;white-space:nowrap}
.modal-nav{display:flex;gap:10px;margin-top:18px}
.modal-nav button{flex:1;cursor:pointer;font-family:inherit;font-size:13px;font-weight:700;color:var(--ink);background:var(--glass);border:1px solid var(--stroke);border-radius:12px;padding:12px 10px}
.modal-nav button:hover:not(:disabled){border-color:var(--cyan)}
.modal-nav button:disabled{opacity:.35;cursor:default}
@media(max-width:640px){.modal-nav{flex-direction:column}.saved-toggle{order:3}}