:root{--ink:#162033;--muted:#637083;--paper:#fff;--soft:#f4f7fb;--line:#dfe6ee;--purple:#6847e8;--teal:#119d8e;--dark:#11182a;--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);line-height:1.68;background:#fff}a{color:#5137c6;text-underline-offset:3px}.wrap{width:min(var(--max),calc(100% - 36px));margin:auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}.navrow{min-height:72px;display:flex;align-items:center;gap:22px}.brand{font-size:1.22rem;font-weight:900;letter-spacing:-.035em;text-decoration:none;color:var(--dark);white-space:nowrap}.brand span{color:var(--purple)}
.desktop-nav{margin-left:auto;display:flex;align-items:center;gap:17px}.desktop-nav a{text-decoration:none;color:#354158;font-size:.92rem;font-weight:700}.cta{display:inline-block;background:var(--purple);color:#fff!important;text-decoration:none;border-radius:10px;padding:11px 16px;font-weight:850;box-shadow:0 7px 18px rgba(104,71,232,.18)}.header-cta{white-space:nowrap}
.menu-btn{display:none;border:0;background:transparent;font-size:1.55rem;padding:8px;cursor:pointer}.mobile-menu{display:none;border-top:1px solid var(--line);padding:10px 18px 18px}.mobile-menu.open{display:block}.mobile-menu a{display:block;padding:10px 2px;text-decoration:none;font-weight:750;color:#354158}
.hero{padding:72px 0 55px;background:linear-gradient(145deg,#f7f4ff,#f1fbf9)}.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}.eyebrow{text-transform:uppercase;letter-spacing:.13em;color:var(--purple);font-weight:900;font-size:.76rem}h1{font-size:clamp(2.45rem,6vw,4.6rem);line-height:1.03;letter-spacing:-.055em;margin:.18em 0}.lead{font-size:1.17rem;color:var(--muted)}h2{font-size:1.75rem;line-height:1.2;letter-spacing:-.035em;margin-top:2em}h3{font-size:1.18rem}.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 15px 34px rgba(28,39,66,.07)}
.layout{display:grid;grid-template-columns:minmax(0,780px) 300px;gap:42px;align-items:start;padding:50px 0}.content{min-width:0}.sidebar{position:static}.sidebox{border:1px solid var(--line);border-radius:16px;padding:20px;margin-bottom:18px;background:#fff}.sidebox.ctabox{background:var(--dark);color:#fff}.sidebox.ctabox p{color:#d6ddeb}.sidebox .cta{width:100%;text-align:center}.sidebox a:not(.cta){display:block;margin:.45em 0}
.notice{background:#f4f1ff;border-left:4px solid var(--purple);padding:14px 17px;border-radius:0 10px 10px 0}.experience{background:#effaf8;border-left-color:var(--teal)}.breadcrumbs{font-size:.86rem;color:var(--muted);margin-bottom:18px}.breadcrumbs a{color:var(--muted)}.badge{display:inline-block;border-radius:999px;background:#eee9ff;color:#4d35bb;padding:5px 10px;font-weight:850;font-size:.74rem}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.linkcard{border:1px solid var(--line);border-radius:14px;padding:18px}.linkcard a{font-weight:850}.table{width:100%;border-collapse:collapse;margin:22px 0}.table th,.table td{text-align:left;vertical-align:top;border-bottom:1px solid var(--line);padding:12px}.table th{background:var(--soft)}.inline-cta{background:var(--dark);color:#fff;padding:25px;border-radius:17px;margin:32px 0}.inline-cta p{color:#d5dce8}
footer{background:var(--dark);color:#cbd3df;padding:44px 0;margin-top:45px}footer a{color:#fff}.footergrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}.small{font-size:.88rem;color:var(--muted)}footer .small{color:#aeb8c8}
@media(max-width:850px){.desktop-nav{display:none}.menu-btn{display:block;margin-left:2px}.navrow{gap:8px}.header-cta{margin-left:auto;padding:9px 11px;font-size:.8rem}.brand{font-size:1.02rem}.layout,.hero-grid,.footergrid,.grid{grid-template-columns:1fr}.layout{padding-top:32px}.sidebar{order:2}.hero{padding:48px 0 38px}h1{font-size:2.55rem}}
@media(max-width:420px){.wrap{width:min(var(--max),calc(100% - 24px))}.brand{font-size:.93rem}.header-cta{font-size:.72rem;padding:8px 9px}.menu-btn{font-size:1.4rem;padding:6px}}

.popup-backdrop{position:fixed;inset:0;background:rgba(9,14,26,.58);display:none;align-items:center;justify-content:center;z-index:1000;padding:18px}.popup-backdrop.show{display:flex}.popup{position:relative;width:min(520px,100%);background:#fff;border-radius:20px;padding:28px;box-shadow:0 28px 80px rgba(0,0,0,.28)}.popup h2{margin:.15em 0 .45em;font-size:1.75rem}.popup p{color:var(--muted)}.popup-actions{display:flex;gap:10px;flex-wrap:wrap}.popup-stay{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:10px;padding:11px 16px;font-weight:800;cursor:pointer}.popup-close{position:absolute;right:12px;top:10px;border:0;background:transparent;font-size:1.6rem;cursor:pointer;color:var(--muted)}body.popup-open{overflow:hidden}

.article-meta{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0 20px;color:var(--muted);font-size:.86rem}.takeaways{border:1px solid var(--line);background:var(--soft);border-radius:16px;padding:20px;margin:24px 0}.takeaways h2{margin-top:0;font-size:1.25rem}.toc{border:1px solid var(--line);border-radius:16px;padding:20px;margin:24px 0}.toc h2{margin-top:0;font-size:1.2rem}.toc a{display:block;margin:5px 0}.cluster-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.faq{border-top:1px solid var(--line);padding:14px 0}.faq h3{margin:.2em 0}.fresh{font-size:.9rem;background:#f1fbf9;border-left:4px solid var(--teal);padding:12px 15px;margin:22px 0}.journey{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:22px 0}.journey div{background:var(--soft);padding:12px;border-radius:10px;text-align:center;font-size:.88rem;font-weight:750}.hub-hero{padding:48px 0 20px}.knowledge-section{margin:38px 0}.source-list li{margin:.5em 0}
@media(max-width:850px){.cluster-grid,.journey{grid-template-columns:1fr}}