/* 399bet-ai.com — Original style system */
:root{
  --c-bg:#f5f7fb;
  --c-surface:#ffffff;
  --c-surface-2:#eef2f7;
  --c-ink:#0b1f3a;
  --c-ink-soft:#39506d;
  --c-muted:#6c7a90;
  --c-line:#dfe5ef;
  --c-brand:#0f766e;
  --c-brand-d:#0b5a54;
  --c-accent:#f59e0b;
  --c-accent-d:#c97a06;
  --c-dark:#0b1f3a;
  --c-dark-2:#103d63;
  --c-success:#16a34a;
  --c-danger:#dc2626;
  --r-sm:6px; --r-md:10px; --r-lg:16px; --r-xl:24px;
  --sh-1:0 1px 2px rgba(11,31,58,.06),0 1px 1px rgba(11,31,58,.04);
  --sh-2:0 6px 16px rgba(11,31,58,.08);
  --sh-3:0 18px 40px rgba(11,31,58,.14);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px;
  --max:1240px;
  --font:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans Bengali","Hind Siliguri","SolaimanLipi",Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:var(--font);color:var(--c-ink);background:var(--c-bg);line-height:1.65;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--c-brand);text-decoration:none}
a:hover{color:var(--c-accent-d)}
h1,h2,h3,h4{color:var(--c-ink);line-height:1.25;margin:0 0 var(--sp-4)}
h1{font-size:clamp(28px,3.6vw,44px);font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(22px,2.4vw,30px);font-weight:800}
h3{font-size:clamp(18px,1.6vw,22px);font-weight:700}
p{margin:0 0 var(--sp-4)}
ul,ol{padding-left:22px;margin:0 0 var(--sp-4)}
li{margin-bottom:6px}
.container{max-width:var(--max);margin:0 auto;padding:0 var(--sp-5)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* Top info bar */
.topbar{background:var(--c-dark);color:#d8e6f5;font-size:13px}
.topbar .bar{display:flex;justify-content:space-between;align-items:center;padding:8px 0;gap:12px;flex-wrap:wrap}
.topbar a{color:#f7c35f}
.topbar .ticks{display:flex;gap:18px;flex-wrap:wrap}
.topbar .ticks span{opacity:.92}

/* Header */
.site-header{background:#fff;border-bottom:1px solid var(--c-line);position:sticky;top:0;z-index:50;box-shadow:var(--sh-1)}
.site-header .row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 0}
.logo{display:flex;align-items:center;gap:10px}
.logo-img{height:44px;width:auto;max-width:180px}
.logo-text{display:flex;flex-direction:column;line-height:1.05}
.logo-text b{font-size:20px;color:var(--c-brand);font-weight:800}
.logo-text small{font-size:11px;color:var(--c-accent);letter-spacing:2px;font-weight:700}
.main-nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.main-nav a{color:var(--c-ink);font-weight:600;font-size:14.5px;padding:10px 12px;border-radius:var(--r-sm);transition:.2s}
.main-nav a:hover,.main-nav a.active{background:var(--c-surface-2);color:var(--c-brand-d)}
.header-cta{display:flex;gap:10px;align-items:center}
.btn{display:inline-block;font-weight:700;font-size:14px;padding:10px 18px;border-radius:var(--r-md);border:1px solid transparent;cursor:pointer;transition:.2s;text-align:center;line-height:1.2}
.btn-register{background:linear-gradient(135deg,#f59e0b,#d97706);color:#0b1f3a}
.btn-register:hover{filter:brightness(1.05);color:#0b1f3a}
.btn-login{background:transparent;color:var(--c-brand);border-color:var(--c-brand)}
.btn-login:hover{background:var(--c-brand);color:#fff}
.btn-primary{background:var(--c-brand);color:#fff;padding:14px 26px;font-size:15px}
.btn-primary:hover{background:var(--c-brand-d);color:#fff}
.btn-accent{background:linear-gradient(135deg,#f59e0b,#d97706);color:#0b1f3a;padding:14px 26px;font-size:15px}
.btn-accent:hover{filter:brightness(1.05);color:#0b1f3a}
.btn-ghost{background:#fff;color:var(--c-ink);border:1px solid var(--c-line)}
.btn-ghost:hover{border-color:var(--c-brand);color:var(--c-brand)}
.nav-toggle{display:none;background:none;border:1px solid var(--c-line);border-radius:var(--r-sm);padding:8px 10px;font-size:18px;font-weight:800;color:var(--c-ink);cursor:pointer}

/* Banner */
.home-banner{margin:0;background:#0b1f3a}
.home-banner img{width:100%;height:auto;display:block}

/* Quick shortcuts */
.shortcut-row{background:#fff;border-bottom:1px solid var(--c-line)}
.shortcut-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;padding:18px 0}
.shortcut{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;padding:14px 8px;border:1px solid var(--c-line);border-radius:var(--r-md);background:linear-gradient(180deg,#fff,#f6f9fd);color:var(--c-ink);font-weight:700;font-size:13.5px;text-align:center;transition:.2s}
.shortcut:hover{transform:translateY(-2px);border-color:var(--c-brand);color:var(--c-brand);box-shadow:var(--sh-2)}
.shortcut .sh-ico{width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,#0f766e,#f59e0b);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px}

/* Section baseline */
section{padding:56px 0}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:26px;flex-wrap:wrap}
.section-head .sub{color:var(--c-muted);font-size:14px;margin-top:6px}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--c-accent-d);font-weight:800;margin-bottom:8px}

/* Category feature cards */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cat-card{position:relative;overflow:hidden;border-radius:var(--r-lg);padding:28px;color:#fff;min-height:220px;display:flex;flex-direction:column;justify-content:space-between;box-shadow:var(--sh-2)}
.cat-card h3{color:#fff;margin-bottom:8px}
.cat-card p{color:#e7eef9;opacity:.95;margin-bottom:16px}
.cat-card .more{color:#f7c35f;font-weight:700;font-size:14px}
.cat-card.live{background:linear-gradient(135deg,#0f766e,#064e47)}
.cat-card.slots{background:linear-gradient(135deg,#103d63,#0b1f3a)}
.cat-card.sports{background:linear-gradient(135deg,#c97a06,#7a4903)}
.cat-card::after{content:"";position:absolute;right:-40px;bottom:-40px;width:180px;height:180px;border-radius:50%;background:rgba(255,255,255,.08)}

/* Secondary quick tiles */
.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.tile{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:22px;transition:.2s}
.tile:hover{border-color:var(--c-brand);box-shadow:var(--sh-2);transform:translateY(-2px)}
.tile h4{margin:6px 0 8px;color:var(--c-ink);font-size:17px}
.tile p{color:var(--c-muted);font-size:14px;margin:0}
.tile .badge{display:inline-block;font-size:11px;padding:2px 8px;border-radius:999px;background:var(--c-surface-2);color:var(--c-ink-soft);font-weight:700;letter-spacing:.5px}

/* Feed / news list on home */
.feed-grid{display:grid;grid-template-columns:2fr 1fr;gap:28px}
.news-list{display:flex;flex-direction:column;gap:14px}
.news-item{display:flex;gap:14px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:14px;transition:.2s}
.news-item:hover{border-color:var(--c-brand);box-shadow:var(--sh-1)}
.news-item .thumb{width:120px;flex:0 0 120px;height:84px;border-radius:var(--r-sm);background:linear-gradient(135deg,#103d63,#0f766e);display:flex;align-items:center;justify-content:center;color:#f7c35f;font-weight:800;font-size:22px}
.news-item h4{margin:0 0 6px;font-size:16px}
.news-item h4 a{color:var(--c-ink)}
.news-item h4 a:hover{color:var(--c-brand)}
.news-item .meta{font-size:12px;color:var(--c-muted);margin-bottom:4px}
.news-item p{font-size:13.5px;color:var(--c-ink-soft);margin:0}
.sidebar-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:18px;margin-bottom:16px}
.sidebar-card h4{margin:0 0 10px;font-size:15px;border-bottom:1px solid var(--c-line);padding-bottom:8px}
.sidebar-card ul{margin:0;padding:0;list-style:none}
.sidebar-card li{border-bottom:1px dashed var(--c-line);padding:8px 0}
.sidebar-card li:last-child{border-bottom:0}
.sidebar-card a{color:var(--c-ink-soft);font-size:14px}
.sidebar-card a:hover{color:var(--c-brand)}

/* Long-form content area */
.longform{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.longform .wrap{max-width:920px;margin:0 auto}
.longform h2{border-left:4px solid var(--c-accent);padding-left:12px;margin-top:36px}
.longform h3{margin-top:22px}
.longform ul li::marker{color:var(--c-accent)}
.longform blockquote{border-left:4px solid var(--c-brand);background:var(--c-surface-2);padding:14px 18px;border-radius:0 var(--r-md) var(--r-md) 0;color:var(--c-ink-soft);font-style:italic;margin:18px 0}
.callout{background:linear-gradient(135deg,#ecfdf5,#fff7ed);border:1px solid #fde68a;border-radius:var(--r-md);padding:18px;margin:18px 0}

/* FAQ */
.faq{display:flex;flex-direction:column;gap:10px}
details.qa{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:14px 18px;transition:.2s}
details.qa[open]{border-color:var(--c-brand);box-shadow:var(--sh-1)}
details.qa>summary{cursor:pointer;font-weight:700;color:var(--c-ink);list-style:none;display:flex;justify-content:space-between;align-items:center;gap:10px}
details.qa>summary::-webkit-details-marker{display:none}
details.qa>summary::after{content:"+";font-size:22px;color:var(--c-brand);font-weight:700}
details.qa[open]>summary::after{content:"−"}
details.qa>div{padding-top:10px;color:var(--c-ink-soft)}

/* CTA banner */
.cta-band{background:linear-gradient(135deg,#0b1f3a,#103d63);color:#fff;border-radius:var(--r-lg);padding:36px;display:flex;justify-content:space-between;align-items:center;gap:22px;flex-wrap:wrap}
.cta-band h2{color:#fff;margin:0 0 8px}
.cta-band p{color:#cddcee;margin:0}

/* Footer */
.site-footer{background:#0b1f3a;color:#cddcee;padding:56px 0 0;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1.2fr;gap:28px}
.footer-grid h4{color:#fff;font-size:15px;margin:0 0 14px;letter-spacing:.5px}
.footer-grid a{color:#cddcee;font-size:14px;display:block;padding:4px 0}
.footer-grid a:hover{color:#f7c35f}
.footer-brand p{font-size:13.5px;opacity:.85;margin:10px 0 14px}
.contact-list{font-size:14px;line-height:1.8}
.contact-list b{color:#f7c35f;font-weight:700;display:inline-block;min-width:72px}
.footer-bottom{border-top:1px solid #12314f;margin-top:36px;padding:18px 0;font-size:13px;color:#8aa1bd;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* Breadcrumb */
.crumbs{background:#fff;border-bottom:1px solid var(--c-line);padding:14px 0;font-size:13.5px;color:var(--c-muted);overflow-wrap:anywhere;word-break:break-word}
.crumbs a{color:var(--c-ink-soft)}
.crumbs a:hover{color:var(--c-brand)}
.crumbs span{margin:0 6px;color:var(--c-muted)}

/* Page-specific heroes (differ across pages) */
.hero-split{padding:56px 0;background:linear-gradient(135deg,#ecfeff,#fff);border-bottom:1px solid var(--c-line)}
.hero-split .grid{display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center}
.hero-split .art{background:linear-gradient(135deg,#0f766e,#103d63);border-radius:var(--r-lg);padding:30px;color:#fff;min-height:280px;position:relative;overflow:hidden}
.hero-split .art h3{color:#f7c35f}
.hero-side{padding:40px 0;background:#0b1f3a;color:#fff}
.hero-side h1{color:#fff}
.hero-side p{color:#cddcee;max-width:720px}
.hero-stack{padding:56px 0;background:linear-gradient(180deg,#fff7ed,#fff);text-align:center;border-bottom:1px solid var(--c-line)}
.hero-stack p{max-width:760px;margin:0 auto 20px}
.hero-band{padding:44px 0;background:linear-gradient(135deg,#103d63,#0f766e);color:#fff}
.hero-band h1{color:#fff}
.hero-band p{color:#cddcee}

/* Filter chips (archive) */
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.chip{padding:7px 14px;border:1px solid var(--c-line);border-radius:999px;background:#fff;color:var(--c-ink-soft);font-size:13px;font-weight:600;cursor:pointer}
.chip.active,.chip:hover{border-color:var(--c-brand);color:var(--c-brand);background:#ecfdf5}

/* Article layout */
.article-body{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:32px}
.article-body article{min-width:0}
.article-body h1,.article-body h2,.article-body h3,.article-body p,.article-body li,.article-body a{overflow-wrap:anywhere;word-break:break-word}
.article-body h1{margin-bottom:10px;line-height:1.25}
.article-meta{color:var(--c-muted);font-size:13.5px;margin-bottom:22px;display:flex;gap:14px;flex-wrap:wrap}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-body article h2{margin-top:28px}
.article-body article p{color:var(--c-ink-soft);font-size:15.5px}
.related{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:18px}
.related h4{margin:0 0 12px}
.related a{display:block;padding:8px 0;border-bottom:1px dashed var(--c-line);color:var(--c-ink);font-weight:600;font-size:14px}
.related a:last-child{border:0}
.related a:hover{color:var(--c-brand)}

/* Steps (download) */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:st}
.step{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:20px;position:relative;counter-increment:st}
.step::before{content:counter(st,decimal-leading-zero);position:absolute;top:-16px;left:16px;background:var(--c-accent);color:#0b1f3a;font-weight:800;padding:6px 10px;border-radius:var(--r-sm)}
.step h4{margin:6px 0 8px}
.step p{font-size:14px;color:var(--c-muted);margin:0}

/* Bonus cards */
.bonus-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.bonus{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:22px;position:relative;transition:.2s}
.bonus:hover{border-color:var(--c-accent);box-shadow:var(--sh-2)}
.bonus .amount{font-size:34px;font-weight:800;color:var(--c-accent-d);margin:6px 0}
.bonus ul{padding-left:18px}
.bonus ul li{font-size:14px;color:var(--c-ink-soft)}

/* Table */
.table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;font-size:14px}
.table th,.table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--c-line)}
.table th{background:var(--c-surface-2);font-weight:700;color:var(--c-ink)}
.table tr:last-child td{border:0}

/* 404 */
.err{min-height:60vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:60px 20px}
.err .code{font-size:110px;font-weight:900;line-height:1;background:linear-gradient(135deg,#0f766e,#f59e0b);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* Admin minimal */
.admin-wrap{max-width:1100px;margin:0 auto;padding:22px}
.admin-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
.admin-head h1{font-size:22px;margin:0}
.admin-nav a{margin-right:12px;color:var(--c-brand);font-weight:600}
.form-row{display:flex;flex-direction:column;margin-bottom:14px}
.form-row label{font-weight:700;margin-bottom:6px;color:var(--c-ink)}
.form-row input,.form-row textarea,.form-row select{padding:10px 12px;border:1px solid var(--c-line);border-radius:var(--r-sm);font-size:14px;font-family:var(--font)}
.form-row textarea{min-height:220px;resize:vertical}
.msg{padding:10px 14px;border-radius:var(--r-sm);margin-bottom:14px;font-size:14px}
.msg.ok{background:#ecfdf5;color:#047857;border:1px solid #a7f3d0}
.msg.err{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca}

/* Responsive */
@media (max-width:1024px){
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .tiles{grid-template-columns:repeat(2,1fr)}
  .shortcut-grid{grid-template-columns:repeat(3,1fr)}
  .feed-grid{grid-template-columns:1fr}
  .article-body{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .bonus-grid{grid-template-columns:1fr 1fr}
  .hero-split .grid{grid-template-columns:1fr}
}
@media (max-width:720px){
  .main-nav{display:none;width:100%;flex-direction:column;align-items:stretch;background:#fff;border-top:1px solid var(--c-line);padding:10px 0}
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 8px;border-bottom:1px solid var(--c-line)}
  .nav-toggle{display:inline-block}
  .site-header .row{flex-wrap:wrap}
  .logo-img{height:36px}
  .cat-grid,.tiles,.bonus-grid,.steps{grid-template-columns:1fr}
  .shortcut-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  h1{font-size:28px}
  .cta-band{padding:24px}
}