:root{
  --navy:#102b49;--blue:#1b567d;--teal:#2c7a78;--cream:#f7f4ec;--paper:#fffdf8;
  --ink:#18232c;--muted:#5e6b73;--gold:#d6a73f;--green:#527a55;--line:#dfe6e8;
  --shadow:0 18px 50px rgba(16,43,73,.10);--radius:18px
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);line-height:1.68}
a{color:var(--blue);text-decoration-thickness:.08em;text-underline-offset:.15em}a:hover{color:var(--teal)}
img,svg{max-width:100%;height:auto}.wrap{width:min(1180px,92vw);margin:auto}
.skip{position:absolute;left:-9999px}.skip:focus{left:1rem;top:1rem;background:#fff;padding:.7rem 1rem;z-index:1000}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,253,248,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1.3rem;min-height:72px}
.brand{display:flex;align-items:center;gap:.7rem;color:var(--navy);font-weight:850;letter-spacing:-.03em;text-decoration:none}.brand-mark{width:34px;height:34px}
.nav{display:flex;align-items:center;gap:1.2rem}.nav a{color:var(--ink);text-decoration:none;font-weight:650;font-size:.95rem}
.nav a:hover{color:var(--teal)}.menu-btn{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:.55rem .7rem;font-weight:700}
.hero{background:linear-gradient(135deg,#f7f4ec 0%,#eaf4f1 100%);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:4rem;align-items:center;padding:5rem 0}
.eyebrow{display:inline-flex;gap:.45rem;align-items:center;text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;font-weight:850;color:var(--teal)}
h1,h2,h3{line-height:1.12;color:var(--navy);letter-spacing:-.035em}h1{font-size:clamp(2.6rem,6vw,5.25rem);margin:.45rem 0 1rem}h2{font-size:clamp(1.8rem,3.5vw,2.7rem);margin:2.6rem 0 1rem}h3{font-size:1.35rem;margin:1.8rem 0 .7rem}
.lede{font-size:1.18rem;color:#3f515d;max-width:760px}.actions{display:flex;flex-wrap:wrap;gap:.8rem;margin:1.6rem 0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.9rem 1.15rem;border-radius:12px;text-decoration:none;font-weight:800;border:1px solid transparent;transition:.18s transform,.18s box-shadow}.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--navy);color:#fff;box-shadow:0 10px 24px rgba(16,43,73,.18)}.btn-primary:hover{color:#fff;background:#173b61}
.btn-secondary{background:#fff;border-color:var(--line);color:var(--navy)}
.disclosure{font-size:.85rem;color:var(--muted);max-width:800px}
.product-visual{display:block;background:#fff;border:1px solid #dce4e3;border-radius:26px;padding:1.5rem;box-shadow:var(--shadow);text-decoration:none}.product-visual:hover{box-shadow:0 22px 60px rgba(16,43,73,.16)}
.product-badge{display:inline-block;background:#eef6f2;color:var(--green);font-weight:800;font-size:.78rem;padding:.35rem .55rem;border-radius:999px}
.section{padding:4rem 0}.section-alt{background:#f4f7f5}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.35rem;box-shadow:0 8px 30px rgba(16,43,73,.04)}.card h3{margin-top:.25rem}.card p:last-child{margin-bottom:0}
.kicker{font-size:.78rem;text-transform:uppercase;letter-spacing:.11em;color:var(--teal);font-weight:800}
.article-wrap{display:grid;grid-template-columns:minmax(0,760px) 280px;gap:3rem;align-items:start;padding:3.5rem 0}
.article{min-width:0}.article h1{font-size:clamp(2.35rem,5vw,4.2rem)}.article p,.article li{font-size:1.04rem}.article ul,.article ol{padding-left:1.3rem}
.breadcrumbs{font-size:.86rem;color:var(--muted);margin-bottom:1.3rem}.breadcrumbs a{color:inherit}
.toc{border:1px solid var(--line);background:#fafcfb;border-radius:14px;padding:1rem 1.1rem;margin:1.5rem 0}.toc strong{display:block;margin-bottom:.4rem}
.note,.warning,.evidence{border-left:4px solid var(--teal);background:#eff7f5;padding:1rem 1.1rem;border-radius:0 12px 12px 0;margin:1.3rem 0}.warning{border-left-color:var(--gold);background:#fff8e8}.evidence{border-left-color:var(--blue);background:#eef4f8}
.sidebar{position:sticky;top:96px}.sidebox{border:1px solid var(--line);border-radius:16px;padding:1.1rem;background:#fff;margin-bottom:1rem}.sidebox h3{font-size:1.1rem;margin:.1rem 0 .55rem}
.cta-box{background:linear-gradient(135deg,var(--navy),#174a65);color:#fff;border-radius:20px;padding:1.4rem;margin:2rem 0}.cta-box h2,.cta-box h3{color:#fff;margin-top:0}.cta-box p{color:#eef6fb}.cta-box .btn{background:#fff;color:var(--navy)}
table{width:100%;border-collapse:collapse;margin:1.4rem 0;font-size:.94rem}th,td{text-align:left;padding:.75rem;border-bottom:1px solid var(--line);vertical-align:top}th{color:var(--navy);background:#f4f7f5}
.footer{background:#0d243e;color:#dfe8ed;padding:3rem 0 2rem}.footer a{color:#fff}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:2rem}.footer h3{color:#fff;margin-top:0}.fine{font-size:.82rem;color:#aebdc7;border-top:1px solid #28415a;margin-top:2rem;padding-top:1.2rem}
.popup{position:fixed;inset:auto 1rem 1rem auto;width:min(390px,calc(100vw - 2rem));background:#fff;border:1px solid var(--line);box-shadow:0 22px 70px rgba(5,21,33,.25);border-radius:18px;padding:1.15rem;z-index:80;display:none}.popup.show{display:block}.popup-close{float:right;border:0;background:#eef2f2;width:32px;height:32px;border-radius:50%;font-size:1.1rem;cursor:pointer}.popup h3{margin:.3rem 0 .5rem}.popup p{font-size:.9rem;color:var(--muted)}
.author-box{display:flex;gap:1rem;align-items:flex-start;border-top:1px solid var(--line);padding-top:1.3rem;margin-top:2rem}.avatar{width:48px;height:48px;border-radius:50%;background:#e8f1ef;display:grid;place-items:center;font-weight:900;color:var(--teal)}
.sources{font-size:.92rem}.sources li{margin:.35rem 0}.tag{display:inline-block;font-size:.78rem;background:#edf4f4;border-radius:999px;padding:.25rem .55rem;color:var(--blue);font-weight:750}
@media(max-width:860px){.hero-grid,.article-wrap,.grid-3,.grid-2,.footer-grid{grid-template-columns:1fr}.hero-grid{gap:2rem;padding:3.5rem 0}.sidebar{position:static}.menu-btn{display:block}.nav{display:none;position:absolute;left:0;right:0;top:72px;background:#fff;padding:1rem 4vw;border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start}.nav.open{display:flex}.header-inner{position:relative}}
@media(max-width:520px){h1{font-size:2.55rem}.section{padding:3rem 0}.btn{width:100%}.popup{inset:auto 1rem 1rem 1rem;width:auto}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}