/* ============================================
   IT_05 PlayTailwind - babiacore.com
   White + Blue theme, clean SaaS layout
   ============================================ */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;color:#334155;background:#fff;line-height:1.7;font-size:16px;padding-bottom:60px}
@media(min-width:769px){body{padding-bottom:0}}
a{color:#3b82f6;text-decoration:none;transition:color .2s}
a:hover{color:#2563eb}
img{max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ── Section headers (IT_05 style) ── */
.section-label{display:inline-block;color:#3b82f6;font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:1.5px;margin-bottom:8px}
.section-header{margin-bottom:48px}
.section-header--center{text-align:center}
.section-header--center .section-desc{margin-left:auto;margin-right:auto}
.section-title{font-size:32px;font-weight:800;color:#0f172a;margin-bottom:12px;line-height:1.3}
.section-desc{font-size:16px;color:#64748b;max-width:600px;line-height:1.7}
.section-more{text-align:center;margin-top:36px}

/* ── Buttons (IT_05 style) ── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:8px;cursor:pointer;border:2px solid transparent;transition:all .25s;font-size:15px;padding:12px 28px;text-decoration:none;line-height:1.4}
.btn--primary{background:#3b82f6;color:#fff;border-color:#3b82f6}
.btn--primary:hover{background:#2563eb;border-color:#2563eb;color:#fff;transform:translateY(-1px);box-shadow:0 4px 20px rgba(59,130,246,.4)}
.btn--dark{background:#1e293b;color:#fff;border-color:#1e293b}
.btn--dark:hover{background:#0f172a;border-color:#0f172a;color:#fff;transform:translateY(-1px);box-shadow:0 4px 20px rgba(0,0,0,.3)}
.btn--outline{background:transparent;color:#3b82f6;border-color:#3b82f6}
.btn--outline:hover{background:#3b82f6;color:#fff;border-color:#3b82f6}
.btn--white{background:#fff;color:#3b82f6;border-color:#fff;box-shadow:0 4px 14px rgba(0,0,0,.15)}
.btn--white:hover{background:#eff6ff;border-color:#eff6ff;color:#2563eb}
.btn--outline-white{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn--outline-white:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff}
.btn--sm{padding:8px 18px;font-size:13px}
.btn--lg{padding:14px 34px;font-size:16px}
.btn--full{width:100%}

/* ── Header - WHITE bg, IT_05 PlayTailwind style ── */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:#fff;transition:all .3s;border-bottom:1px solid #f1f5f9}
.site-header.scrolled{box-shadow:0 2px 20px rgba(0,0,0,.06);border-bottom-color:transparent}
.site-header__inner{display:flex;align-items:center;height:72px;gap:24px}
.site-logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px;color:#0f172a;text-decoration:none;flex-shrink:0}
.site-logo__img{width:36px;height:36px;border-radius:8px}
.site-logo__text{letter-spacing:-.5px}
.site-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{padding:8px 16px;font-size:15px;font-weight:500;color:#475569;border-radius:6px;transition:all .2s}
.nav-link:hover{color:#3b82f6}
.nav-link--active{color:#3b82f6;font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:16px}
.header-cta{white-space:nowrap;border-radius:50px}
.nav-lang-wrap{position:relative}
.nav-lang-btn{display:inline-flex;align-items:center;gap:4px;cursor:pointer;background:none;border:none;font-family:inherit;color:#475569;font-size:15px;padding:8px 16px;border-radius:6px;transition:all .2s}
.nav-lang-btn:hover{color:#3b82f6}
.nav-lang-btn svg{transition:transform .2s}
.nav-lang-dropdown{display:none;position:absolute;top:100%;right:0;margin-top:8px;background:#fff;border:1px solid #e2e8f0;border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.1);min-width:140px;padding:6px 0;z-index:300}
.nav-lang-wrap:hover .nav-lang-dropdown,.nav-lang-wrap:focus-within .nav-lang-dropdown{display:block}
.nav-lang-wrap:hover .nav-lang-btn svg{transform:rotate(180deg)}
.nav-lang-dropdown a{display:block;padding:8px 18px;font-size:14px;color:#64748b;transition:all .15s}
.nav-lang-dropdown a:hover{background:rgba(59,130,246,.06);color:#3b82f6}
.nav-lang-dropdown a.active{color:#3b82f6;font-weight:600}

@media(max-width:768px){
.site-header__inner{height:60px}
.site-nav{display:none;position:fixed;top:60px;left:0;right:0;bottom:0;background:#fff;flex-direction:column;padding:24px;gap:0;z-index:200;overflow-y:auto}
.site-nav.open{display:flex}
.nav-link{padding:16px 0;font-size:17px;border-bottom:1px solid #f1f5f9}
.nav-lang-wrap{border-bottom:1px solid #f1f5f9;padding:8px 0}
.nav-lang-btn{padding:12px 0;font-size:17px;width:100%;justify-content:space-between}
.nav-lang-dropdown{position:static;box-shadow:none;border:none;margin-top:0;padding:0 0 0 16px}
.nav-lang-wrap:hover .nav-lang-dropdown,.nav-lang-wrap .nav-lang-dropdown{display:block}
.header-actions{display:none}
}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;margin-left:auto}
.nav-toggle__bar{width:22px;height:2px;background:#334155;border-radius:2px;transition:all .2s}
@media(max-width:768px){.nav-toggle{display:flex}}
.nav-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.3);z-index:150}
.nav-overlay.open{display:block}

/* ── HERO - Blue gradient, IT_05 exact style ── */
.hero{position:relative;background:linear-gradient(135deg,#4f6ef7 0%,#3b5de7 40%,#3651d4 100%);padding:150px 0 80px;overflow:hidden;color:#fff}
.hero::before{content:'';position:absolute;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.06) 0%,transparent 70%);right:-150px;top:-200px}
.hero::after{content:'';position:absolute;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.04) 0%,transparent 70%);left:-100px;bottom:-100px}
.hero .container{position:relative;z-index:2}
.hero__inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero__left{text-align:left}
.hero__title{font-size:clamp(28px,4.5vw,44px);font-weight:800;line-height:1.2;margin-bottom:20px;color:#fff}
.hero__desc{font-size:16px;color:rgba(255,255,255,.75);margin-bottom:32px;line-height:1.8;max-width:480px}
.hero__btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:24px}
.hero__tech{font-size:13px;color:rgba(255,255,255,.5);font-weight:500}
.hero__right{display:flex;justify-content:center;align-items:center}

/* Laptop mockup (IT_05 style: laptop frame with dashboard) */
.hero__laptop{position:relative;width:420px;max-width:100%}
.hero__laptop-screen{background:#1e293b;border-radius:12px 12px 0 0;padding:8px;border:3px solid #475569;border-bottom:none;overflow:hidden}
.hero__laptop-topbar{display:flex;align-items:center;gap:6px;padding:6px 10px;background:#0f172a;border-radius:6px 6px 0 0;margin-bottom:0}
.hero__laptop-dot{width:8px;height:8px;border-radius:50%}
.hero__laptop-dot:nth-child(1){background:#ef4444}
.hero__laptop-dot:nth-child(2){background:#f59e0b}
.hero__laptop-dot:nth-child(3){background:#22c55e}
.hero__laptop-content{background:#0f172a;padding:20px;min-height:200px;display:flex;flex-direction:column;gap:14px}
.hero__laptop-row{display:flex;gap:12px;align-items:flex-end;height:80px}
.hero__laptop-bar{flex:1;background:linear-gradient(to top,#3b82f6,#60a5fa);border-radius:4px 4px 0 0;min-height:20px}
.hero__laptop-bar:nth-child(1){height:45%}
.hero__laptop-bar:nth-child(2){height:70%;background:linear-gradient(to top,#22c55e,#4ade80)}
.hero__laptop-bar:nth-child(3){height:55%}
.hero__laptop-bar:nth-child(4){height:85%;background:linear-gradient(to top,#8b5cf6,#a78bfa)}
.hero__laptop-bar:nth-child(5){height:40%}
.hero__laptop-bar:nth-child(6){height:65%;background:linear-gradient(to top,#f59e0b,#fbbf24)}
.hero__laptop-bar:nth-child(7){height:50%}
.hero__laptop-lines{display:flex;flex-direction:column;gap:8px}
.hero__laptop-line{height:8px;border-radius:4px;background:rgba(255,255,255,.08)}
.hero__laptop-line:nth-child(1){width:80%}
.hero__laptop-line:nth-child(2){width:55%}
.hero__laptop-line:nth-child(3){width:70%}
.hero__laptop-stats{display:flex;gap:10px}
.hero__laptop-stat{flex:1;background:rgba(59,130,246,.15);border-radius:6px;padding:10px;text-align:center}
.hero__laptop-stat-num{font-size:16px;font-weight:700;color:#60a5fa;display:block}
.hero__laptop-stat-label{font-size:10px;color:rgba(255,255,255,.4)}
.hero__laptop-base{height:14px;background:linear-gradient(to bottom,#64748b,#475569);border-radius:0 0 4px 4px;margin:0 -3px}
.hero__laptop-stand{width:120px;height:6px;background:#475569;margin:0 auto;border-radius:0 0 6px 6px}

@media(max-width:768px){
.hero{padding:120px 0 60px}
.hero__inner{grid-template-columns:1fr;text-align:center;gap:40px}
.hero__left{text-align:center}
.hero__desc{margin:0 auto 32px}
.hero__btns{justify-content:center}
.hero__right{display:none}
}

/* ── Features (white bg, IT_05 4-card style, we use 2x3 for 6 cats) ── */
.features-section{padding:90px 0;background:#fff}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{padding:32px;background:#fff;border-radius:12px;border:1px solid #f1f5f9;transition:all .3s;text-align:left}
.feature-card:hover{border-color:#3b82f6;transform:translateY(-4px);box-shadow:0 12px 40px rgba(59,130,246,.1)}
.feature-card__icon{width:56px;height:56px;background:rgba(59,130,246,.08);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#3b82f6;margin-bottom:20px}
.feature-card__title{font-size:18px;font-weight:700;color:#0f172a;margin-bottom:8px}
.feature-card__desc{font-size:14px;color:#64748b;line-height:1.7;margin-bottom:16px}
.feature-card__link{font-size:14px;font-weight:600;color:#3b82f6;display:inline-flex;align-items:center;gap:6px;transition:gap .2s}
.feature-card__link:hover{color:#2563eb;gap:10px}
@media(max-width:1024px){.features-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.features-grid{grid-template-columns:1fr}}

/* ── Toolkit / Why Choose Us (IT_05 asymmetric left-right) ── */
.toolkit{padding:90px 0;background:#fff;overflow:hidden}
.toolkit__inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.toolkit__heading{font-size:clamp(26px,3.5vw,36px);font-weight:800;color:#0f172a;line-height:1.25;margin-bottom:16px}
.toolkit__desc{font-size:15px;color:#64748b;line-height:1.8;margin-bottom:12px}
.toolkit__btn{margin-top:24px}
.toolkit__images{position:relative;min-height:360px}
.toolkit__img{position:absolute;border-radius:12px;box-shadow:0 16px 48px rgba(0,0,0,.12);object-fit:cover}
.toolkit__img--1{width:280px;height:200px;top:0;left:0;z-index:2;background:#e2e8f0 url('/assets/img/laptop-work.jpg') center/cover}
.toolkit__img--2{width:240px;height:180px;top:80px;left:160px;z-index:3;background:#e2e8f0 url('/assets/img/crypto-trading.jpg') center/cover}
.toolkit__badge{position:absolute;bottom:40px;right:20px;background:#f97316;color:#fff;border-radius:12px;padding:20px 24px;z-index:4;text-align:center;box-shadow:0 8px 24px rgba(249,115,22,.3)}
.toolkit__badge-num{display:block;font-size:36px;font-weight:900;line-height:1}
.toolkit__badge-text{font-size:12px;font-weight:600;opacity:.9;margin-top:4px}
@media(max-width:768px){
.toolkit__inner{grid-template-columns:1fr;gap:40px}
.toolkit__images{min-height:280px;display:flex;justify-content:center}
.toolkit__img--1{position:relative;width:240px;height:180px}
.toolkit__img--2{display:none}
.toolkit__badge{position:relative;bottom:auto;right:auto;margin-top:-30px}
}

/* ── CTA Banner (IT_05 full-width blue gradient) ── */
.home-cta{padding:90px 0;background:linear-gradient(135deg,#4f6ef7 0%,#3b5de7 50%,#3651d4 100%);position:relative;overflow:hidden}
.home-cta::before{content:'';position:absolute;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.05) 0%,transparent 70%);right:-100px;bottom:-100px}
.home-cta__box{text-align:center;color:#fff;position:relative;z-index:2}
.home-cta__box h2{font-size:clamp(24px,3.5vw,32px);font-weight:800;margin-bottom:6px}
.home-cta__box h3{font-size:clamp(20px,3vw,28px);font-weight:700;margin-bottom:16px;opacity:.9}
.home-cta__box p{font-size:16px;opacity:.75;margin-bottom:32px;max-width:560px;margin-left:auto;margin-right:auto;line-height:1.7}
.home-cta__btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ── FAQ (IT_05 2x2 grid with numbered circles, NOT accordion) ── */
.faq-section{padding:90px 0;background:#fff}
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;max-width:960px;margin:0 auto}
.faq-item{background:#fff;border:1px solid #f1f5f9;border-radius:12px;padding:28px;transition:all .3s}
.faq-item:hover{box-shadow:0 8px 30px rgba(0,0,0,.06);border-color:#e2e8f0}
.faq-num{width:44px;height:44px;background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;margin-bottom:16px;flex-shrink:0}
.faq-question-text{font-size:16px;font-weight:700;color:#0f172a;margin-bottom:10px;line-height:1.4}
.faq-answer-text{font-size:14px;color:#64748b;line-height:1.7}
@media(max-width:768px){.faq-grid{grid-template-columns:1fr}}

/* Old FAQ accordion styles (keep for backward compat) */
.faq-question{display:none}
.faq-chevron{display:none}
.faq-answer{display:block}

/* ── Blog / Latest Articles (IT_05 3 cards with photo) ── */
.latest-section{padding:90px 0;background:#f8fafc}
.post-grid{display:grid;gap:28px}
.post-grid--3col{grid-template-columns:repeat(3,1fr)}
@media(max-width:1024px){.post-grid--3col{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.post-grid--3col,.post-grid--2col{grid-template-columns:1fr}}
.post-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.04);border:1px solid #f1f5f9;transition:all .3s;display:flex;flex-direction:column;padding:24px}
.post-card:hover{box-shadow:0 12px 36px rgba(0,0,0,.08);transform:translateY(-4px)}
.post-card__thumb{width:100%;height:200px;background:#e2e8f0;object-fit:cover;display:block}
.post-card__body{padding:24px;flex:1;display:flex;flex-direction:column}
.post-card__tags{margin-bottom:10px;display:flex;flex-wrap:wrap;gap:6px}
.post-card__title{font-size:17px;font-weight:700;line-height:1.4;margin-bottom:8px;flex:1}
.post-card__title a{color:#0f172a;text-decoration:none}
.post-card__title a:hover{color:#3b82f6}
.post-card__excerpt{font-size:14px;color:#64748b;line-height:1.6;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card__meta{display:flex;gap:12px;font-size:13px;color:#94a3b8;margin-top:auto}
.tag-pill{display:inline-block;background:rgba(59,130,246,.08);color:#3b82f6;font-size:12px;font-weight:600;padding:3px 10px;border-radius:4px;transition:all .2s}
.tag-pill:hover{background:#3b82f6;color:#fff}
.tag-pill--sm{font-size:11px;padding:2px 8px}
.tag-pill--active{background:#3b82f6;color:#fff}

/* ── Partners Bar ── */
.partners{padding:50px 0;background:#fff;border-top:1px solid #f1f5f9}
.partners__inner{display:flex;align-items:center;justify-content:center;gap:48px;flex-wrap:wrap}
.partners__logo{font-size:18px;font-weight:700;color:#cbd5e1;letter-spacing:1px;transition:color .2s}
.partners__logo:hover{color:#94a3b8}

/* ── Footer (IT_05 dark #0f172a) ── */
.site-footer{background:#0f172a;color:#94a3b8;padding:70px 0 0}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:50px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-col--brand .footer-logo,.footer-logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:#fff;margin-bottom:16px;text-decoration:none}
.footer-desc{font-size:14px;color:#64748b;line-height:1.8;margin-bottom:20px}
.footer-social{display:flex;gap:10px;margin-top:16px}
.footer-social__link{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.06);color:#64748b;transition:all .2s}
.footer-social__link:hover{background:#3b82f6;color:#fff}
.footer-heading{font-size:15px;font-weight:700;color:#e2e8f0;margin-bottom:20px}
.footer-links{list-style:none;padding:0}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:#64748b;transition:color .2s}
.footer-links a:hover{color:#3b82f6}
.footer-lang{display:flex;gap:6px;margin-top:16px;flex-wrap:wrap}
.footer-lang a{font-size:12px;color:#475569;padding:3px 8px;border-radius:4px;transition:all .2s}
.footer-lang a:hover,.footer-lang a.active{color:#3b82f6}
.footer-bottom{padding:24px 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.footer-bottom__copy{font-size:13px;color:#475569}
.footer-bottom__links{display:flex;gap:20px}
.footer-bottom__links a{font-size:13px;color:#475569;transition:color .2s}
.footer-bottom__links a:hover{color:#3b82f6}
.footer-bottom__risk{font-size:12px;color:#475569;line-height:1.6;text-align:center;padding:16px 0;border-top:1px solid rgba(255,255,255,.06)}
@media(max-width:768px){
.footer-top{grid-template-columns:1fr}
.footer-bottom{flex-direction:column;text-align:center}
}

/* Keep old footer-grid class as alias */
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:50px;border-bottom:1px solid rgba(255,255,255,.08)}
@media(max-width:768px){.footer-grid{grid-template-columns:1fr}}

/* ── Article Layout (Post page, IT_05 style) ── */
.page-wrapper{padding:100px 0 70px}
.article-layout{display:grid;grid-template-columns:1fr 300px;gap:48px;padding:20px 0 60px}
@media(max-width:1024px){.article-layout{grid-template-columns:1fr;gap:30px}}
.article-main{min-width:0}
.article-header{margin-bottom:28px}
.article-header__title{font-size:clamp(24px,4vw,34px);font-weight:800;color:#0f172a;line-height:1.3;margin:12px 0 14px}
.article-header__meta{display:flex;align-items:center;gap:8px;font-size:13px;color:#94a3b8}
.article-highlight{background:rgba(59,130,246,.05);border-left:4px solid #3b82f6;padding:16px 20px;border-radius:0 8px 8px 0;margin-bottom:28px;color:#475569;font-size:15px;line-height:1.7}
.article-inline-cta{background:#eff6ff;border-radius:10px;padding:14px 20px;margin-bottom:28px;font-size:14px;color:#1e40af}
.article-inline-cta a{color:#3b82f6;font-weight:600}
.article-inline-cta a:hover{color:#2563eb;text-decoration:underline}
.article-content{font-size:16px;line-height:1.85;color:#334155}
.article-content h2{font-size:22px;font-weight:700;color:#0f172a;margin:36px 0 14px;padding-bottom:8px;border-bottom:2px solid #f1f5f9}
.article-content h3{font-size:18px;font-weight:600;color:#1e293b;margin:28px 0 10px}
.article-content p{margin-bottom:16px}
.article-content ul,.article-content ol{margin-bottom:16px;padding-left:24px}
.article-content li{margin-bottom:6px}
.article-content a{color:#3b82f6;text-decoration:underline;text-underline-offset:3px}
.article-content a:hover{color:#2563eb}
.article-content blockquote{border-left:4px solid #3b82f6;padding:12px 20px;margin:20px 0;background:rgba(59,130,246,.03);border-radius:0 8px 8px 0;color:#64748b}
.article-content table{width:100%;border-collapse:collapse;margin:20px 0}
.article-content th,.article-content td{padding:10px 14px;border:1px solid #e2e8f0;text-align:left;font-size:14px}
.article-content th{background:rgba(59,130,246,.06);font-weight:600;color:#3b82f6}
.article-content code{background:#f1f5f9;padding:2px 6px;border-radius:4px;font-size:14px;color:#334155}
.article-content pre{background:#0f172a;color:#e2e8f0;padding:16px;border-radius:8px;overflow-x:auto;margin:20px 0}
.article-content pre code{background:none;padding:0;color:inherit}
.article-content img{border-radius:8px;margin:16px 0;border:1px solid #e2e8f0}
.related-section{margin-top:40px;padding-top:28px;border-top:2px solid #f1f5f9}
.related-section h3{font-size:18px;font-weight:700;color:#0f172a;margin-bottom:16px}
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.related-item{display:block;padding:14px 18px;background:#f8fafc;border-radius:8px;border:1px solid #f1f5f9;transition:all .2s}
.related-item:hover{border-color:#3b82f6;background:rgba(59,130,246,.03)}
.related-item__title{display:block;font-size:14px;font-weight:600;color:#0f172a;margin-bottom:4px}
.related-item__date{font-size:12px;color:#94a3b8}
@media(max-width:768px){.related-grid{grid-template-columns:1fr}}

/* Sidebar */
.article-sidebar{display:flex;flex-direction:column;gap:24px}
.sidebar-block{background:#f8fafc;border-radius:12px;padding:24px;border:1px solid #f1f5f9}
.sidebar-cta{background:linear-gradient(135deg,#4f6ef7 0%,#3651d4 100%);color:#fff;border:none}
.sidebar-cta h4{font-size:18px;font-weight:700;margin-bottom:8px}
.sidebar-cta p{font-size:14px;opacity:.85;margin-bottom:18px}
.sidebar-cta .btn--primary{background:#fff;color:#3b82f6;border-color:#fff}
.sidebar-cta .btn--primary:hover{background:#eff6ff;color:#2563eb;border-color:#eff6ff}
.sidebar-cta .btn--outline{color:#fff;border-color:rgba(255,255,255,.5)}
.sidebar-cta .btn--outline:hover{background:rgba(255,255,255,.15);border-color:#fff}
.sidebar-block__title{font-size:16px;font-weight:700;color:#0f172a;margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid #f1f5f9}
.sidebar-tags{display:flex;flex-wrap:wrap;gap:6px}
.sidebar-list{list-style:none;padding:0}
.sidebar-list li{padding:8px 0;border-bottom:1px solid #f1f5f9}
.sidebar-list li:last-child{border-bottom:none}
.sidebar-list a{font-size:14px;color:#64748b;transition:color .2s}
.sidebar-list a:hover{color:#3b82f6}

/* Page header */
.page-header{margin-bottom:36px}
.page-header__title{font-size:30px;font-weight:800;color:#0f172a}
.page-header__meta{font-size:15px;color:#64748b;margin-top:6px}

/* Tags grid */
.tags-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.tag-card{display:flex;flex-direction:column;align-items:center;gap:10px;padding:28px 16px;background:#fff;border-radius:12px;border:1px solid #f1f5f9;transition:all .25s;text-align:center}
.tag-card:hover{box-shadow:0 8px 24px rgba(59,130,246,.08);transform:translateY(-3px);border-color:#3b82f6}
.tag-card__icon{color:#3b82f6}
.tag-card__name{font-weight:700;font-size:15px;color:#0f172a}
.tag-card__count{font-size:13px;color:#94a3b8}
@media(max-width:768px){.tags-grid{grid-template-columns:repeat(2,1fr)}}

/* Tag page */
.tag-page-header{margin-bottom:28px}
.tag-page-header__title{font-size:28px;font-weight:800;color:#0f172a;padding-bottom:12px;border-bottom:3px solid #3b82f6;display:inline-block}
.tag-page-header__count{font-size:14px;color:#64748b;margin-top:8px}
.filter-buttons{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.filter-btn{background:#f1f5f9;border:1px solid #e2e8f0;border-radius:6px;padding:6px 16px;font-size:14px;font-weight:500;color:#64748b;cursor:pointer;transition:all .2s;font-family:inherit}
.filter-btn:hover{color:#3b82f6;border-color:#3b82f6}
.filter-btn--active{background:#3b82f6;color:#fff;border-color:#3b82f6}

/* Breadcrumb */
.breadcrumb{padding:16px 0;font-size:13px;color:#94a3b8}
.breadcrumb a{color:#64748b;transition:color .2s}
.breadcrumb a:hover{color:#3b82f6}
.breadcrumb__sep{margin:0 6px;color:#cbd5e1}
.breadcrumb__current{color:#0f172a;font-weight:500}

/* Error page */
.error-page{text-align:center;padding:100px 0}
.error-page__code{font-size:120px;font-weight:900;color:#3b82f6;line-height:1;margin-bottom:12px}
.error-page__title{font-size:24px;font-weight:700;color:#0f172a;margin-bottom:12px}
.error-page__desc{font-size:16px;color:#64748b;margin-bottom:28px}
.error-page__actions{display:flex;gap:14px;justify-content:center}

/* ── Download page (IT_05 white+blue, not dark) ── */
.dl-hero{position:relative;background:linear-gradient(135deg,#4f6ef7 0%,#3b5de7 50%,#3651d4 100%);padding:140px 0 60px;text-align:center;overflow:hidden;color:#fff}
.dl-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 50% 0%,rgba(255,255,255,.08) 0%,transparent 60%);pointer-events:none}
.dl-hero .container{position:relative;z-index:2}
.dl-hero h1{font-size:clamp(28px,5vw,42px);font-weight:800;color:#fff;margin-bottom:16px}
.dl-hero p{font-size:17px;color:rgba(255,255,255,.75);max-width:520px;margin:0 auto}
.dl-cards{padding:70px 0;background:#fff}
.dl-cards__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
@media(max-width:768px){.dl-cards__grid{grid-template-columns:1fr}}
.dl-card{background:#fff;border:1px solid #f1f5f9;border-radius:16px;padding:32px 28px;display:flex;flex-direction:column;transition:all .3s}
.dl-card:hover{border-color:#3b82f6;transform:translateY(-4px);box-shadow:0 12px 40px rgba(59,130,246,.1)}
.dl-card__badge{display:inline-block;align-self:flex-start;background:rgba(59,130,246,.08);color:#3b82f6;font-size:11px;font-weight:700;letter-spacing:1.5px;padding:4px 12px;border-radius:50px;margin-bottom:16px}
.dl-card__title{font-size:20px;font-weight:700;color:#0f172a;margin-bottom:18px}
.dl-card__list{list-style:none;padding:0;margin-bottom:24px;flex:1}
.dl-card__list li{display:flex;align-items:center;gap:8px;font-size:14px;color:#64748b;padding:6px 0;line-height:1.5}
.dl-card__list li svg{color:#22c55e;flex-shrink:0}
.dl-steps{padding:70px 0;background:#f8fafc}
.dl-steps__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:32px}
@media(max-width:1024px){.dl-steps__grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.dl-steps__grid{grid-template-columns:1fr}}
.dl-step{background:#fff;border:1px solid #f1f5f9;border-radius:12px;padding:28px 24px;text-align:center;transition:all .25s}
.dl-step:hover{border-color:#3b82f6;transform:translateY(-3px);box-shadow:0 8px 24px rgba(59,130,246,.08)}
.dl-step__num{width:48px;height:48px;background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;margin:0 auto 16px}
.dl-step h3{font-size:16px;font-weight:700;color:#0f172a;margin-bottom:10px}
.dl-step p{font-size:14px;color:#64748b;line-height:1.7}

/* About page */
.about-page{padding-top:20px}
.about-header{margin-bottom:40px}
.about-header h1{font-size:28px;font-weight:800;color:#0f172a;margin-bottom:12px}
.about-header__desc{font-size:16px;color:#64748b;line-height:1.7}
.about-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:32px 0}
.about-stat{text-align:center;padding:20px;background:#f8fafc;border-radius:10px;border:1px solid #f1f5f9}
.about-stat__num{font-size:28px;font-weight:800;color:#3b82f6}
.about-stat__label{font-size:14px;color:#64748b;margin-top:4px}
@media(max-width:768px){.about-stats{grid-template-columns:repeat(2,1fr)}}
.about-page h2{font-size:22px;font-weight:700;color:#0f172a;margin:32px 0 14px}
.about-page p{margin-bottom:14px;color:#475569;line-height:1.7}
.about-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:20px}
@media(max-width:768px){.about-grid{grid-template-columns:repeat(2,1fr)}}
.about-card{text-align:center;padding:16px;background:#f8fafc;border-radius:8px;border:1px solid #f1f5f9}
.about-card__icon{font-size:24px;margin-bottom:4px}
.about-card__title{font-size:14px;font-weight:600;color:#0f172a}
.about-principles{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:20px}
@media(max-width:768px){.about-principles{grid-template-columns:1fr}}
.about-principle{padding:20px;background:#f8fafc;border-radius:8px;border:1px solid #f1f5f9}
.about-principle strong{display:block;font-size:15px;color:#0f172a;margin-bottom:6px}
.about-principle p{font-size:14px;margin-bottom:0}
.about-notice{background:#fef3c7;border:1px solid #fbbf24;border-radius:8px;padding:20px;margin:28px 0}
.about-notice strong{display:block;color:#92400e;margin-bottom:8px}
.about-notice p{font-size:14px;color:#78350f;line-height:1.7;margin-bottom:8px}
.about-notice p:last-child{margin-bottom:0}
.about-cta{display:flex;gap:14px;margin-top:32px}

/* Disclaimer page */
.disclaimer-page{padding-top:20px}
.disclaimer-page h1{font-size:28px;font-weight:800;color:#0f172a;margin-bottom:20px}
.disclaimer-content h2{font-size:20px;font-weight:700;color:#0f172a;margin:28px 0 10px}
.disclaimer-content p{color:#475569;line-height:1.7;margin-bottom:14px}

/* ── Mobile bottom nav ── */
.mobile-nav{display:none;position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid #f1f5f9;z-index:200;padding:6px 0 env(safe-area-inset-bottom,0)}
@media(max-width:768px){.mobile-nav{display:flex}}
.mobile-nav__item{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:6px 0;font-size:11px;color:#94a3b8;text-decoration:none;transition:color .2s}
.mobile-nav__item--active{color:#3b82f6}
.mobile-nav__item:hover{color:#3b82f6}

/* Back to top */
.back-to-top{position:fixed;bottom:80px;right:20px;width:44px;height:44px;border-radius:50%;background:#3b82f6;color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all .3s;z-index:100;box-shadow:0 4px 12px rgba(59,130,246,.3)}
.back-to-top.visible{opacity:1;visibility:visible}
.back-to-top:hover{background:#2563eb;transform:translateY(-2px)}
@media(min-width:769px){.back-to-top{bottom:30px;right:30px}}

.empty-state{text-align:center;padding:60px 20px;color:#94a3b8;font-size:16px}
.section-badge{display:inline-block;font-size:13px;font-weight:600;padding:6px 16px;border-radius:50px;letter-spacing:1px;text-transform:uppercase}

/* ── Download content page ── */
.dl-page{padding-top:20px}
.dl-page-header{margin-bottom:32px}
.dl-page-header h1{font-size:28px;font-weight:800;color:#0f172a;margin-bottom:8px}
.dl-page-header__desc{font-size:16px;color:#64748b}
.dl-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-bottom:40px}
@media(max-width:768px){.dl-grid{grid-template-columns:1fr}}
.dl-box{background:#f8fafc;border:1px solid #f1f5f9;border-radius:12px;overflow:hidden}
.dl-box__header{display:flex;align-items:center;gap:14px;padding:20px;border-bottom:1px solid #f1f5f9;background:#fff}
.dl-box__icon{flex-shrink:0}
.dl-box__platform{font-size:16px;font-weight:700;color:#0f172a}
.dl-box__sub-text{font-size:13px;color:#64748b}
.dl-box__body{padding:20px}
.dl-box__body p{font-size:14px;color:#64748b;margin-bottom:14px}
.dl-box__steps{margin-top:16px}
.dl-box__step{display:flex;align-items:flex-start;gap:10px;padding:8px 0;font-size:14px;color:#475569}
.dl-box__step-num{width:22px;height:22px;background:#3b82f6;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0;margin-top:2px}
.dl-box__note{margin-top:14px;padding:10px 14px;background:#fef3c7;border-radius:6px;font-size:13px;color:#92400e}
.dl-extra{margin-bottom:40px}
.dl-extra h2{font-size:22px;font-weight:700;color:#0f172a;margin-bottom:16px}
.dl-extra__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:768px){.dl-extra__grid{grid-template-columns:1fr}}
.dl-extra__item{padding:20px;background:#f8fafc;border:1px solid #f1f5f9;border-radius:8px}
.dl-extra__item strong{display:block;color:#0f172a;margin-bottom:6px}
.dl-extra__item p{font-size:14px;color:#64748b;margin-bottom:0}
.dl-faq{margin-bottom:40px}
.dl-faq h2{font-size:22px;font-weight:700;color:#0f172a;margin-bottom:16px}
.dl-faq__list{display:flex;flex-direction:column;gap:12px}
.dl-faq__item{padding:16px 20px;background:#f8fafc;border:1px solid #f1f5f9;border-radius:8px}
.dl-faq__item strong{display:block;color:#0f172a;margin-bottom:4px;font-size:15px}
.dl-faq__item p{font-size:14px;color:#64748b;margin-bottom:0}
.dl-cta{text-align:center;padding:32px;background:linear-gradient(135deg,#4f6ef7 0%,#3651d4 100%);border-radius:12px;color:#fff;margin-bottom:40px}
.dl-cta strong{display:block;font-size:20px;margin-bottom:8px}
.dl-cta p{font-size:15px;opacity:.85;margin-bottom:18px}

/* Post grid 2col */
.post-grid--2col{grid-template-columns:repeat(2,1fr)}
@media(max-width:768px){.post-grid--2col{grid-template-columns:1fr}}
.post-card__category{margin-bottom:10px;display:flex;flex-wrap:wrap;gap:6px}