:root{--bg:#fff;--surface-light:#f5f5f7;--surface-mid:#e8e8ed;--border:#d2d2d7;--text:#1d1d1f;--text-2:#6e6e73;--orange:#ff5a1f;--magenta:#d6006c;--black:#000}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;color:var(--text);background:var(--bg);font-weight:300;line-height:1.6;-webkit-font-smoothing:antialiased}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
.eyebrow{font-size:12px;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--orange)}
a{color:inherit}
/* nav */
nav.topnav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.85);backdrop-filter:saturate(180%) blur(20px);border-bottom:.5px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:56px}
.logo{font-weight:700;font-size:20px;letter-spacing:-.02em;text-decoration:none;color:var(--text)}
.logo span{color:var(--orange)}
.nav-links{display:flex;gap:32px;list-style:none}
.nav-links a{color:var(--text);text-decoration:none;font-size:14px}
.nav-links a:hover,.nav-links a.active{color:var(--orange)}
.nav-cta{display:inline-block;padding:10px 20px;border-radius:980px;background:var(--orange);color:#fff;font-weight:500;font-size:14px;text-decoration:none}
.nav-cta:hover{background:#e64414}
@media(max-width:768px){.nav-links{display:none}}
/* blog hero */
.blog-hero{background:var(--black);color:#fff;padding:88px 0 72px;position:relative;overflow:hidden}
.blog-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at top left,rgba(255,90,31,.18),transparent 55%);pointer-events:none}
.blog-hero .eyebrow{margin-bottom:16px}
.blog-hero h1{font-size:48px;font-weight:600;letter-spacing:-.03em;line-height:1.05;max-width:760px;margin-bottom:20px}
.blog-hero p{font-size:18px;color:#d2d2d7;max-width:620px}
@media(max-width:768px){.blog-hero h1{font-size:32px}}
/* filters */
.blog-main{padding:48px 24px 96px}
.filters{display:flex;flex-direction:column;gap:14px;margin-bottom:40px}
.filter-group{display:flex;flex-wrap:wrap;gap:8px}
.filter-btn{border:.5px solid var(--border);background:#fff;color:var(--text-2);font:inherit;font-size:13px;font-weight:500;padding:8px 16px;border-radius:980px;cursor:pointer;transition:all .15s}
.filter-btn:hover{border-color:var(--text)}
.filter-btn.active{background:var(--text);color:#fff;border-color:var(--text)}
/* post grid */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:900px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.post-grid{grid-template-columns:1fr}}
.post-card{display:flex;flex-direction:column;background:#fff;border:.5px solid var(--border);border-radius:18px;padding:28px;text-decoration:none;color:inherit;transition:transform .2s,box-shadow .2s}
.post-card:hover{transform:translateY(-3px);box-shadow:0 12px 32px rgba(0,0,0,.08)}
.post-card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.chip{display:inline-block;padding:4px 10px;border-radius:980px;background:rgba(255,90,31,.1);color:var(--orange);font-size:11px;font-weight:600;letter-spacing:.04em;text-transform:uppercase}
.lang-flag{font-size:11px;font-weight:700;color:var(--text-2);letter-spacing:.05em}
.post-card h2{font-size:19px;font-weight:600;letter-spacing:-.01em;line-height:1.3;margin-bottom:10px}
.post-card p{font-size:14px;color:var(--text-2);flex-grow:1}
.post-meta{font-size:12px;color:var(--text-2);margin-top:16px}
.no-results{text-align:center;color:var(--text-2);padding:48px 0}
/* article */
.article-wrap{padding:40px 0 96px}
.article-inner{max-width:760px}
.crumbs{font-size:13px;color:var(--text-2);margin-bottom:28px}
.crumbs a{color:var(--text-2);text-decoration:none}
.crumbs a:hover{color:var(--orange)}
.crumbs span{margin:0 6px}
.crumb-current{color:var(--text)}
.article-head{margin-bottom:36px}
.article-head .chip{margin-bottom:18px}
.article-head h1{font-size:42px;font-weight:700;letter-spacing:-.03em;line-height:1.1;margin-bottom:18px}
@media(max-width:768px){.article-head h1{font-size:30px}}
.article-meta{font-size:14px;color:var(--text-2)}
.lang-switch{display:inline-block;margin-top:18px;font-size:14px;font-weight:500;color:var(--orange);text-decoration:none}
.lang-switch:hover{text-decoration:underline}
.toc{background:var(--surface-light);border:.5px solid var(--border);border-radius:14px;padding:22px 26px;margin-bottom:40px}
.toc strong{display:block;font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-2);margin-bottom:12px}
.toc ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.toc a{color:var(--text);text-decoration:none;font-size:15px}
.toc a:hover{color:var(--orange)}
.article-body{font-size:17px;color:#2c2c2e}
.article-body h2{font-size:26px;font-weight:600;letter-spacing:-.02em;color:var(--text);margin:40px 0 16px;scroll-margin-top:80px}
.article-body p{margin-bottom:18px}
.article-body ul{margin:0 0 22px;padding-left:0;list-style:none}
.article-body li{position:relative;padding-left:28px;margin-bottom:12px}
.article-body li::before{content:'';position:absolute;left:6px;top:11px;width:7px;height:7px;border-radius:50%;background:var(--orange)}
.stat-line{margin:0 0 22px;padding:18px 22px;background:var(--surface-light);border-left:3px solid var(--orange);border-radius:0 12px 12px 0;font-size:16px;color:var(--text);font-weight:400}
/* cta */
.cta-box{margin:48px 0 0;background:var(--black);color:#fff;border-radius:20px;padding:40px;position:relative;overflow:hidden}
.cta-box::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at bottom right,rgba(255,90,31,.25),transparent 60%);pointer-events:none}
.cta-box h3{font-size:24px;font-weight:600;letter-spacing:-.02em;margin-bottom:12px;position:relative}
.cta-box p{font-size:16px;color:#d2d2d7;margin-bottom:24px;position:relative}
.cta-btn{display:inline-block;padding:14px 28px;border-radius:980px;background:var(--orange);color:#fff;font-weight:500;font-size:16px;text-decoration:none;position:relative}
.cta-btn:hover{background:#e64414}
/* related */
.related{max-width:760px;margin:64px auto 0}
.related h3{font-size:20px;font-weight:600;margin-bottom:20px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:700px){.rel-grid{grid-template-columns:1fr}}
.rel-card{display:block;background:#fff;border:.5px solid var(--border);border-radius:14px;padding:20px;text-decoration:none;color:inherit;transition:transform .2s,box-shadow .2s}
.rel-card:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.07)}
.rel-card .chip{margin-bottom:10px}
.rel-card h4{font-size:15px;font-weight:600;line-height:1.35}
/* footer */
footer{background:var(--black);color:#fff;padding:56px 0 28px}
.footer-row{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px;margin-bottom:20px}
.footer-links{display:flex;gap:24px}
.footer-links a{color:#fff;opacity:.8;text-decoration:none;font-size:14px}
.footer-links a:hover{opacity:1}
.footer-tag{color:#a1a1a6;font-size:14px;max-width:340px;margin-bottom:24px}
.footer-bottom{border-top:.5px solid #2d2d2d;padding-top:20px;font-size:12px;color:#a1a1a6}