:root{--bg:#fff;--bg-2:#f5f5f7;--bg-3:#fafafa;--surface:rgba(0,0,0,.03);--border:rgba(0,0,0,.08);--border-bright:rgba(0,0,0,.15);--text:#1d1d1f;--text-muted:#86868b;--text-dim:#a1a1a6;--accent:#0071e3;--accent-light:#2997ff;--accent-deep:#005bb5;--ease-expo:cubic-bezier(.16,1,.3,1);--ease-spring:cubic-bezier(.175,.885,.32,1.275)}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:auto;overflow-x:hidden}
body{font-family:'DM Sans',-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased;cursor:auto}
body.has-custom-cursor{cursor:none}
.cursor,.cursor-ring{opacity:0}
body.has-custom-cursor .cursor,body.has-custom-cursor .cursor-ring{opacity:1}

/* Layout polish */
.container{max-width:1120px}
.container-wide{max-width:1220px}
.article-header{padding:120px 0 54px;background:radial-gradient(900px 520px at 20% 0%, rgba(0,113,227,.12), transparent 60%),radial-gradient(760px 420px at 90% 5%, rgba(41,151,255,.10), transparent 62%),linear-gradient(180deg,var(--bg-3) 0%, #ffffff 100%)}
.article-image{box-shadow:0 24px 60px rgba(15,23,42,.12)}
.article-content{padding:64px 0}
.article-content .container{max-width:860px}
.article-content p{font-size:18px;line-height:1.9;color:#1d1d1f}
.article-content h2{font-size:34px}
.article-content h3{font-size:22px}
.article-content ul,.article-content ol{padding-left:26px}
.article-content li{font-size:18px;line-height:1.85}
.article-content blockquote{background:rgba(0,113,227,.04);border-left-color:rgba(0,113,227,.9);border-radius:14px;padding:18px 18px 18px 22px}
.article-content code{background:rgba(0,0,0,.04);padding:2px 7px;border-radius:9px;border:1px solid rgba(0,0,0,.06);font-size:.95em}
.article-content pre{background:#0b1220;color:#eef2ff;border-radius:16px;padding:16px 18px;overflow:auto;border:1px solid rgba(255,255,255,.06);box-shadow:0 18px 40px rgba(0,0,0,.12)}
.article-content pre code{background:transparent;border:none;padding:0;color:inherit}

/* Related cards */
.related-section{padding:72px 0;background:linear-gradient(180deg,#ffffff 0%, var(--bg-3) 100%)}
.related-card{border:1px solid rgba(0,0,0,.08);border-radius:22px;overflow:hidden;background:#fff;box-shadow:0 18px 40px rgba(15,23,42,.08);transition:transform .35s var(--ease-spring), box-shadow .35s var(--ease-spring)}
.related-card:hover{transform:translateY(-6px);box-shadow:0 28px 60px rgba(15,23,42,.12)}
.related-image img{height:190px;object-fit:cover}
.related-card-title{font-size:18px;letter-spacing:-.01em}
html{scrollbar-width:thin;scrollbar-color:rgba(0,113,227,.5) transparent}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(0,113,227,.35);border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:rgba(0,113,227,.55)}
.cursor{position:fixed;width:10px;height:10px;background:var(--accent);border-radius:50%;pointer-events:none;z-index:9999;transform:translate(-50%,-50%);transition:width .35s var(--ease-spring),height .35s var(--ease-spring);mix-blend-mode:multiply}
.cursor-ring{position:fixed;width:38px;height:38px;border:1.5px solid rgba(0,113,227,.35);border-radius:50%;pointer-events:none;z-index:9998;transform:translate(-50%,-50%)}
@media(hover:none){.cursor,.cursor-ring{display:none}body{cursor:auto}}
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;padding:0 5vw;height:70px;display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.9);backdrop-filter:blur(20px)}
.nav-logo{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--text);font-size:17px;font-weight:600;letter-spacing:-.01em}
.nav-logo-mark{width:34px;height:34px;border-radius:10px;background:white;display:flex;align-items:center;justify-content:center;border:1px solid var(--border);box-shadow:0 10px 24px rgba(0,0,0,.06)}
.nav-logo-mark img{width:20px;height:20px;object-fit:contain}
.nav-links{display:flex;gap:22px;list-style:none}
.nav-link{text-decoration:none;color:var(--text-muted);font-size:14px;font-weight:500;transition:color .25s var(--ease-expo)}
.nav-link:hover{color:var(--text)}
.nav-cta{display:inline-flex;align-items:center;gap:10px;padding:10px 18px;border-radius:999px;background:var(--accent);color:white;text-decoration:none;font-weight:600;font-size:14px;box-shadow:0 12px 30px rgba(0,113,227,.24);transition:transform .25s var(--ease-spring),box-shadow .25s var(--ease-spring)}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(0,113,227,.26)}
.container{max-width:860px;margin:0 auto;padding:0 24px}
.container-wide{max-width:1200px;margin:0 auto;padding:0 24px}
.article-header{padding-top:120px;text-align:center;background:linear-gradient(180deg,#f8fbff,white)}
.article-category{display:inline-flex;align-items:center;gap:10px;padding:10px 16px;border-radius:999px;background:rgba(0,113,227,.08);border:1px solid rgba(0,113,227,.14);color:var(--accent);font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:26px}
.article-title{font-family:'DM Serif Display',serif;font-size:clamp(36px,5vw,60px);line-height:1.05;letter-spacing:-.035em;margin-bottom:18px}
.article-meta{display:flex;justify-content:center;gap:24px;color:var(--text-muted);font-size:14px;flex-wrap:wrap}
.article-image{width:100%;height:460px;object-fit:cover;margin-top:54px;border-radius:26px;border:1px solid var(--border);box-shadow:0 30px 80px rgba(0,0,0,.12)}
/* Article Content */
.article-content{padding:60px 0}
.article-content h2{font-family:'DM Serif Display',serif;font-size:32px;margin:48px 0 24px;letter-spacing:-.02em}
.article-content h3{font-size:22px;font-weight:600;margin:36px 0 18px}
.article-content p{font-size:17px;color:var(--text);margin-bottom:20px;line-height:1.8}
.article-content ul,.article-content ol{margin:20px 0;padding-left:24px}
.article-content li{margin-bottom:12px;font-size:17px}
.article-content blockquote{border-left:4px solid var(--accent);padding-left:24px;margin:32px 0;font-style:italic;color:var(--text-muted);font-size:18px}
.article-content img{width:100%;border-radius:16px;margin:32px 0}
.article-content a{color:var(--accent);text-decoration:none}
.article-content a:hover{text-decoration:underline}
.highlight-box{background:var(--bg-2);border:1px solid var(--border);border-radius:20px;padding:28px;margin:30px 0}
.highlight-box h4{font-size:18px;margin-bottom:12px;display:flex;align-items:center;gap:10px}
/* Author */
.author-section{background:var(--bg-2);padding:44px 0}
.author-box{display:flex;gap:22px;align-items:flex-start;background:white;border:1px solid var(--border);border-radius:24px;padding:22px 24px}
.author-avatar{width:56px;height:56px;border-radius:18px;background:white;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.author-avatar img{width:32px;height:32px;object-fit:contain}
.author-name{font-weight:800}
.author-bio{color:var(--text-muted);font-size:14px;margin-top:6px}
/* Related Articles */
.related-section{padding:70px 0}
.related-title{font-family:'DM Serif Display',serif;font-size:40px;letter-spacing:-.03em;margin-bottom:28px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.related-card{display:block;text-decoration:none;color:inherit;border:1px solid var(--border);border-radius:22px;overflow:hidden;background:white;transition:transform .25s var(--ease-spring),box-shadow .25s var(--ease-expo)}
.related-card:hover{transform:translateY(-6px);box-shadow:0 20px 60px rgba(0,0,0,.12)}
.related-image img{width:100%;height:200px;object-fit:cover}
.related-content{padding:24px}
.related-card-title{font-size:18px;line-height:1.25;letter-spacing:-.01em;margin-bottom:8px}
.related-date{color:var(--text-muted);font-size:13px}
/* CTA */
.cta-section{padding:70px 0;background:var(--bg-2)}
.cta-box{background:linear-gradient(180deg,white,var(--bg-2));border:1px solid var(--border);border-radius:28px;padding:54px 56px;text-align:center;box-shadow:0 24px 70px rgba(0,0,0,.10)}
.cta-title{font-family:'DM Serif Display',serif;font-size:44px;letter-spacing:-.03em;margin-bottom:14px}
.cta-text{color:var(--text-muted);font-size:16px;max-width:560px;margin:0 auto 24px}
.cta-btn{display:inline-flex;align-items:center;gap:10px;padding:14px 22px;border-radius:999px;background:var(--accent);color:white;text-decoration:none;font-weight:700;box-shadow:0 16px 44px rgba(0,113,227,.26);transition:transform .25s var(--ease-spring)}
.cta-btn:hover{transform:translateY(-2px)}
/* Footer */
.footer{border-top:1px solid var(--border);background:white;padding:20px 0}
.footer-content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px;color:var(--text-muted);font-size:14px}
.scroll-top{position:fixed;bottom:28px;right:28px;width:46px;height:46px;border:1px solid var(--border);border-radius:50%;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:center;z-index:999;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(16px);transition:all .5s var(--ease-spring);color:var(--text);font-size:14px}
.scroll-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.scroll-top:hover{background:var(--accent);border-color:var(--accent);color:white}

@media(max-width:768px){.nav-links{display:none}.article-image{height:250px}.related-grid{grid-template-columns:1fr}.author-box{flex-direction:center;text-align:center}.cta-box{padding:40px 24px}}