:root{
  --primary:#0ea5e9;--primary-dark:#0369a1;--primary-soft:rgba(14,165,233,.12);
  --secondary:#06b6d4;--accent:#f59e0b;
  --bg:#f0f9ff;--bg-soft:#e0f2fe;--surface:#fff;--surface-strong:#f8fafc;
  --card:#fff;--card-alt:#f0f9ff;
  --border:rgba(14,165,233,.15);--border-strong:rgba(14,165,233,.3);
  --text:#0f172a;--text-soft:#334155;--text-muted:#64748b;
  --success:#10b981;--warning:#f59e0b;--danger:#ef4444;
  --footer-bg:#082f49;--footer-text:#e0f2fe;
  --gradient-hero:linear-gradient(135deg,#0c4a6e 0%,#0369a1 50%,#0ea5e9 100%);
  --gradient-btn:linear-gradient(135deg,#0ea5e9,#06b6d4);
  --gradient-card:linear-gradient(180deg,rgba(14,165,233,.06),rgba(6,182,212,.03));
  --shadow-header:0 2px 20px rgba(15,23,42,.08);
  --shadow-card:0 4px 24px rgba(14,165,233,.1);
  --shadow-card-hover:0 8px 32px rgba(14,165,233,.18);
  --shadow-btn:0 4px 14px rgba(14,165,233,.25);
  --radius-sm:8px;--radius-md:14px;--radius-lg:20px;--radius-xl:28px;--radius-pill:999px;
  --font-base:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,"Noto Sans Bengali",sans-serif;
  --fs-h1:clamp(28px,4vw,48px);--fs-h2:clamp(22px,3vw,36px);--fs-h3:clamp(18px,2.2vw,24px);
  --fs-body:17px;--fs-small:14px;--fs-nav:clamp(13px,.84vw,15px);
  --lh-body:1.85;--lh-heading:1.25;
  --container-max:1200px;--section-y:clamp(48px,6vw,80px);
  --header-h:72px;--mobile-header-h:64px;
  --motion-fast:.15s;--motion-normal:.3s;--ease-out:cubic-bezier(.33,1,.68,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-base);background:var(--bg);color:var(--text);line-height:var(--lh-body);font-size:var(--fs-body);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary-dark);text-decoration:none;transition:color var(--motion-fast)}
a:hover{color:var(--primary)}
:focus-visible{outline:3px solid var(--primary);outline-offset:2px;border-radius:4px}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0s!important;transition-duration:0s!important}}

/* Container */
.container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 clamp(16px,4vw,32px)}

/* HEADER */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);box-shadow:var(--shadow-header);border-bottom:1px solid var(--border)}
.header-inner{width:100%;max-width:none;padding-left:clamp(10px,1.2vw,20px);padding-right:clamp(10px,1.2vw,20px);display:flex;align-items:center;gap:clamp(10px,1vw,18px);min-height:var(--header-h)}
.brand-wrap{flex:0 0 auto;margin-right:clamp(4px,.8vw,14px);display:flex;align-items:center}
.site-logo{display:block;width:auto;height:clamp(32px,3vw,42px);max-width:clamp(118px,10vw,168px);object-fit:contain}
.primary-nav{flex:1 1 auto;min-width:0;display:flex;align-items:center;justify-content:center;flex-wrap:nowrap;gap:clamp(6px,.72vw,14px);white-space:nowrap;overflow:visible}
.primary-nav a{flex:0 1 auto;min-width:0;padding:9px clamp(6px,.65vw,12px);font-size:var(--fs-nav);line-height:1;white-space:nowrap;color:var(--text);font-weight:600;border-radius:var(--radius-pill);transition:all var(--motion-fast)}
.primary-nav a:hover,.primary-nav a.active{background:var(--primary-soft);color:var(--primary-dark)}
.header-actions{flex:0 0 auto;display:flex;align-items:center;gap:clamp(6px,.6vw,10px);white-space:nowrap}
.btn{display:inline-flex;align-items:center;justify-content:center;font-weight:700;border:none;cursor:pointer;transition:all var(--motion-fast);font-family:inherit;text-decoration:none}
.btn-login{min-height:40px;padding:0 clamp(12px,1vw,18px);font-size:14px;border-radius:var(--radius-pill);background:transparent;color:var(--primary-dark);border:2px solid var(--primary)}
.btn-login:hover{background:var(--primary-soft)}
.btn-register{min-height:40px;padding:0 clamp(12px,1vw,18px);font-size:14px;border-radius:var(--radius-pill);background:var(--gradient-btn);color:#fff;box-shadow:var(--shadow-btn)}
.btn-register:hover{opacity:.92;transform:translateY(-1px)}
.nav-toggle{display:none;flex:0 0 40px;width:40px;height:40px;align-items:center;justify-content:center;background:none;border:2px solid var(--border-strong);border-radius:var(--radius-sm);cursor:pointer;padding:8px;flex-direction:column;gap:4px}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:all var(--motion-normal)}
.btn-primary{min-height:48px;padding:0 28px;font-size:16px;border-radius:var(--radius-pill);background:var(--gradient-btn);color:#fff;box-shadow:var(--shadow-btn)}
.btn-primary:hover{opacity:.92;transform:translateY(-1px);color:#fff}
.btn-outline{min-height:48px;padding:0 28px;font-size:16px;border-radius:var(--radius-pill);background:transparent;color:var(--primary-dark);border:2px solid var(--primary)}
.btn-outline:hover{background:var(--primary-soft)}
.btn-full{width:100%}

/* Mobile menu */
.mobile-menu{display:none;position:fixed;top:var(--header-h);left:0;right:0;bottom:0;background:rgba(255,255,255,.98);backdrop-filter:blur(12px);z-index:999;overflow-y:auto;padding:20px}
.mobile-menu.is-open{display:block}
.mobile-nav{display:flex;flex-direction:column;gap:4px}
.mobile-nav a{display:block;padding:14px 16px;font-size:16px;font-weight:600;color:var(--text);border-radius:var(--radius-sm);transition:background var(--motion-fast)}
.mobile-nav a:hover,.mobile-nav a.active{background:var(--primary-soft);color:var(--primary-dark)}

@media(max-width:1180px){
  .primary-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{padding-left:clamp(8px,2.4vw,14px);padding-right:clamp(8px,2.4vw,14px);justify-content:flex-start;gap:clamp(6px,1.8vw,10px);min-height:var(--mobile-header-h)}
  .brand-wrap{flex:0 1 auto;margin-right:0}
  .site-logo{height:clamp(30px,8vw,40px);max-width:clamp(104px,27vw,138px)}
  .header-actions{margin-left:auto;justify-content:flex-end;gap:clamp(5px,1.6vw,8px)}
  .header-actions .btn{min-height:40px;padding-inline:clamp(10px,2.6vw,14px);font-size:clamp(12px,3.2vw,14px)}
  .nav-toggle{flex-basis:40px}
}
@media(max-width:375px){
  .header-inner{padding-left:8px;padding-right:8px;gap:6px}
  .site-logo{max-width:104px}
  .header-actions .btn{min-height:38px;padding-inline:9px;font-size:12px}
  .nav-toggle{flex-basis:38px;width:38px;height:38px}
}

/* SECTIONS */
section{padding:var(--section-y) 0}
.section-lead{font-size:clamp(16px,1.8vw,19px);color:var(--text-soft);max-width:760px;margin-bottom:32px}
h1{font-size:var(--fs-h1);line-height:var(--lh-heading);font-weight:800;color:var(--text);margin-bottom:20px}
h2{font-size:var(--fs-h2);line-height:var(--lh-heading);font-weight:800;color:var(--text);margin-bottom:16px}
h3{font-size:var(--fs-h3);line-height:1.35;font-weight:700;color:var(--text);margin-bottom:12px}
p{margin-bottom:16px;color:var(--text-soft)}

/* Hero */
.home-hero{background:var(--gradient-hero);color:#fff;padding:clamp(60px,8vw,100px) 0 clamp(40px,6vw,70px);position:relative;overflow:hidden}
.home-hero::before{content:"";position:absolute;width:300px;height:300px;border-radius:50%;background:rgba(56,189,248,.15);top:-80px;right:-80px;filter:blur(40px)}
.home-hero h1,.home-hero p,.home-hero .hero-lead{color:#fff}
.home-hero h1{font-size:clamp(24px,3.2vw,40px);line-height:1.35;word-break:keep-all;overflow-wrap:break-word}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.hero-lead{font-size:clamp(15px,1.6vw,18px);line-height:1.75;opacity:.92}
.home-hero .btn-outline{color:#fff;border-color:rgba(255,255,255,.6)}
.home-hero .btn-outline:hover{background:rgba(255,255,255,.15);color:#fff}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px}
.hero-img{border-radius:var(--radius-lg);box-shadow:0 12px 40px rgba(0,0,0,.2)}
.section-img{border-radius:var(--radius-md);box-shadow:var(--shadow-card)}
.inline-img{margin:24px 0}
.inline-img img,.full-img img{border-radius:var(--radius-md);box-shadow:var(--shadow-card)}

/* Trust strip */
.home-trust-strip{padding:20px 0;background:var(--surface)}
.trust-items{display:flex;justify-content:center;gap:clamp(16px,3vw,40px);flex-wrap:wrap}
.trust-item{display:flex;align-items:center;gap:8px;font-weight:600;font-size:15px;color:var(--text-soft)}
.trust-icon{font-size:20px}

/* Split content */
.split-content{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:start}
.split-content.reverse{grid-template-columns:.95fr 1.05fr}
.split-content.reverse .split-visual{order:-1}
.split-visual img{border-radius:var(--radius-md);box-shadow:var(--shadow-card)}

/* Feature grid */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.feature-grid.cols-4{grid-template-columns:repeat(4,1fr)}
.feature-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 24px;transition:all var(--motion-normal) var(--ease-out)}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:var(--primary)}
.feature-icon{width:52px;height:52px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;background:var(--primary-soft);color:var(--primary-dark);font-size:22px;margin-bottom:16px}
.feature-icon i{font-size:22px}

/* Content panel */
.content-panel{background:var(--surface);border-radius:var(--radius-lg);padding:36px;border:1px solid var(--border)}
.content-panel.accent{background:linear-gradient(135deg,rgba(14,165,233,.05),rgba(6,182,212,.03));border-left:4px solid var(--primary)}
.info-panel{background:var(--primary-soft);border-radius:var(--radius-md);padding:20px 24px;border-left:4px solid var(--primary);margin:16px 0}

/* Compare table */
.table-scroll{overflow-x:auto;margin:20px 0;border-radius:var(--radius-md);border:1px solid var(--border)}
.compare-table{width:100%;border-collapse:collapse;min-width:500px}
.compare-table th{background:var(--primary-soft);color:var(--primary-dark);padding:14px 18px;text-align:left;font-weight:700;font-size:15px}
.compare-table td{padding:12px 18px;border-bottom:1px solid var(--border);font-size:15px}
.compare-table tbody tr:hover{background:rgba(14,165,233,.04)}

/* Plan cards */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.plan-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 24px;text-align:center;position:relative;transition:all var(--motion-normal)}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover)}
.plan-featured{border:2px solid var(--primary);transform:translateY(-4px);box-shadow:var(--shadow-card-hover)}
.plan-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--accent);color:#fff;font-size:12px;font-weight:700;padding:4px 16px;border-radius:var(--radius-pill)}
.plan-card ul{list-style:none;text-align:left;margin:20px 0}
.plan-card li{padding:8px 0;border-bottom:1px solid var(--border);font-size:15px;color:var(--text-soft)}
.plan-card .btn{margin-top:16px}

/* Review cards */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.review-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 24px}
.review-rating{color:var(--accent);font-size:18px;margin-bottom:12px}

/* Check list */
.check-list{list-style:none;margin:16px 0}
.check-list li{padding:8px 0 8px 28px;position:relative;font-size:16px;color:var(--text-soft)}
.check-list li::before{content:"\2713";position:absolute;left:0;color:var(--primary);font-weight:700}

/* Breadcrumb */
.breadcrumb{margin-bottom:20px}
.breadcrumb ol{display:flex;gap:8px;list-style:none;font-size:14px;color:var(--text-muted)}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:var(--border-strong)}
.breadcrumb a{color:var(--primary-dark)}

/* CTA links */
.cta-links{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px}

/* Auth pages */
.auth-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:start}
.form-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-card)}
.auth-form{display:flex;flex-direction:column;gap:18px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group label{font-weight:600;font-size:15px;color:var(--text)}
.form-group input{width:100%;padding:14px 16px;border:2px solid var(--border);border-radius:var(--radius-sm);font-size:16px;font-family:inherit;transition:border-color var(--motion-fast);background:var(--surface)}
.form-group input:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px var(--primary-soft)}
.form-note{text-align:center;font-size:14px;color:var(--text-muted);margin-top:12px}
.auth-trust{display:flex;gap:20px;margin-top:16px;font-size:14px;color:var(--text-muted)}
.auth-info-card{background:var(--primary-soft);border-radius:var(--radius-lg);padding:28px 24px}

/* Policy pages */
.policy-updated{display:inline-block;background:var(--primary-soft);color:var(--primary-dark);padding:6px 16px;border-radius:var(--radius-pill);font-size:13px;font-weight:600;margin-top:12px}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:20px}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden;transition:box-shadow var(--motion-fast)}
.faq-item:hover{box-shadow:var(--shadow-card)}
.faq-trigger{display:flex;align-items:center;justify-content:space-between;width:100%;padding:18px 20px;background:none;border:none;cursor:pointer;font-size:16px;font-weight:700;color:var(--text);font-family:inherit;text-align:left;gap:12px}
.faq-icon{font-size:20px;font-weight:700;color:var(--primary);transition:transform var(--motion-normal);flex-shrink:0}
.faq-trigger[aria-expanded="true"] .faq-icon{transform:rotate(45deg)}
.faq-answer{display:none;padding:0 20px 18px;font-size:15px;line-height:1.8;color:var(--text-soft)}
.faq-answer.is-open{display:block}

/* Error page */
.error-section{text-align:center;padding:clamp(80px,12vw,160px) 0}

/* FOOTER */
.site-footer{background:var(--footer-bg);color:var(--footer-text);padding-top:clamp(48px,6vw,72px)}
.footer-inner{max-width:var(--container-max);margin:0 auto;padding:0 clamp(16px,4vw,32px)}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:36px}
.footer-brand img{margin-bottom:16px;border-radius:var(--radius-sm)}
.footer-brand p{font-size:15px;line-height:1.7;color:rgba(224,242,254,.8);margin-bottom:10px}
.footer-col h4{font-size:16px;font-weight:700;margin-bottom:16px;color:#fff}
.footer-col a{display:block;padding:5px 0;font-size:14px;color:rgba(224,242,254,.75);transition:color var(--motion-fast)}
.footer-col a:hover{color:#67e8f9}
.footer-bottom{margin-top:40px;padding:20px 0;border-top:1px solid rgba(255,255,255,.1)}
.footer-bottom-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;max-width:var(--container-max);margin:0 auto;padding:0 clamp(16px,4vw,32px)}
.footer-bottom p{font-size:13px;color:rgba(224,242,254,.6)}
.footer-bottom-links{display:flex;gap:20px}
.footer-bottom-links a{font-size:13px;color:rgba(224,242,254,.6)}
.footer-bottom-links a:hover{color:#67e8f9}

/* Category pages - varied backgrounds */
.page-category section:nth-child(odd){background:var(--surface)}
.page-category section:nth-child(even){background:var(--bg)}
.page-home section:nth-child(odd){background:var(--surface)}
.page-home section:nth-child(even){background:var(--bg)}
.page-home .home-hero{background:var(--gradient-hero)!important;color:#fff}
.page-home .home-trust-strip{background:var(--surface)!important;padding:20px 0}

/* AOS degrade */
[data-aos]{transition-property:opacity,transform}
.aos-init:not(.aos-animate){opacity:1!important;transform:none!important}

/* Responsive */
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:24px}
  .hero-visual{max-width:480px;margin:0 auto}
  .split-content,.split-content.reverse{grid-template-columns:1fr}
  .split-content.reverse .split-visual{order:0}
  .feature-grid,.feature-grid.cols-4{grid-template-columns:repeat(2,1fr)}
  .plan-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .auth-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  section{padding:clamp(36px,5vw,56px) 0}
}
@media(max-width:640px){
  .feature-grid,.feature-grid.cols-4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .trust-items{flex-direction:column;align-items:center;gap:10px}
  .cta-links{flex-direction:column}
  .cta-links .btn{width:100%;text-align:center}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%;text-align:center}
  .footer-bottom-inner{flex-direction:column;text-align:center}
  .footer-bottom-links{justify-content:center}
}
@media(max-width:414px){
  body{font-size:16px}
  h1{font-size:clamp(24px,6vw,32px)}
}