:root{--ink:#102a2e;--ink-2:#1f3c40;--green:#0d765e;--green-2:#16a37d;--mint:#dff5ec;--cream:#f7f5ef;--paper:#fff;--muted:#617477;--line:#d9e2df;--gold:#d6a648;--shadow:0 22px 60px rgba(16,42,46,.12);--radius:18px;--shell:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit}.shell{width:min(var(--shell),calc(100% - 40px));margin-inline:auto}.skip-link{position:absolute;left:-9999px;top:10px;z-index:100;background:#fff;padding:.7rem 1rem;border-radius:8px}.skip-link:focus{left:10px}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(16,42,46,.09);backdrop-filter:blur(14px)}.header-inner{height:78px;display:flex;align-items:center;gap:34px}.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;min-width:max-content}.brand-mark{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;background:var(--ink);color:#fff;font-weight:850;font-size:.78rem;letter-spacing:.08em;box-shadow:inset 0 0 0 1px rgba(255,255,255,.13)}.brand strong,.brand small{display:block;line-height:1.08}.brand strong{font-size:.98rem;letter-spacing:-.01em}.brand small{color:var(--green);font-size:.76rem;font-weight:750;letter-spacing:.1em;text-transform:uppercase;margin-top:4px}.primary-nav{display:flex;align-items:center;gap:26px;margin-left:auto}.primary-nav a{text-decoration:none;color:var(--ink-2);font-size:.88rem;font-weight:700}.primary-nav a:hover{color:var(--green)}.status-chip{display:inline-flex;align-items:center;gap:8px;border:1px solid #b8ded3;background:#effaf6;color:#17614f;padding:8px 12px;border-radius:999px;font-size:.76rem;font-weight:800}.status-chip span,.status-line span{width:7px;height:7px;border-radius:50%;background:var(--green-2);box-shadow:0 0 0 4px rgba(22,163,125,.13)}
.hero{overflow:hidden;background:radial-gradient(circle at 83% 18%,rgba(39,173,133,.16),transparent 26%),linear-gradient(135deg,#f7fbf9 0%,#fff 54%,#f5f1e6 100%);border-bottom:1px solid var(--line)}.hero-grid{min-height:620px;display:grid;grid-template-columns:minmax(0,1.38fr) minmax(320px,.62fr);align-items:center;gap:72px;padding-block:80px}.eyebrow{display:flex;align-items:center;gap:9px;margin:0 0 18px;color:var(--green);font-size:.76rem;font-weight:850;letter-spacing:.14em;text-transform:uppercase}.eyebrow span{width:24px;height:2px;background:var(--gold)}h1,h2,h3{line-height:1.08;letter-spacing:-.035em}h1{font-size:clamp(3rem,6.2vw,5.7rem);margin:0;max-width:820px}.hero h1 em{font-family:Georgia,serif;font-weight:500;color:var(--green);text-decoration:underline;text-decoration-color:rgba(214,166,72,.65);text-underline-offset:8px}.hero-lede{font-size:1.16rem;color:var(--muted);max-width:680px;margin:28px 0}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 21px;border-radius:11px;text-decoration:none;font-weight:800;font-size:.9rem}.button-primary{background:var(--ink);color:#fff;box-shadow:0 10px 25px rgba(16,42,46,.2)}.button-primary:hover{background:var(--green)}.button-secondary{background:#fff;border:1px solid var(--line)}.button-disabled{background:#e5e9e7;color:#7b8988;cursor:not-allowed}.trust-list{display:flex;gap:23px;flex-wrap:wrap;list-style:none;padding:0;margin:25px 0 0;color:var(--ink-2);font-size:.8rem;font-weight:750}.trust-list li:before{content:"✓";color:var(--green);margin-right:7px}
.research-card{position:relative;background:var(--ink);color:#fff;padding:34px;border-radius:24px;box-shadow:var(--shadow);overflow:hidden}.research-card:after{content:"";position:absolute;width:180px;height:180px;border-radius:50%;right:-80px;top:-70px;border:34px solid rgba(255,255,255,.04)}.card-kicker{color:#81d5bd;font-size:.72rem;font-weight:850;letter-spacing:.13em;text-transform:uppercase;margin-bottom:8px}.metric{display:flex;align-items:baseline;gap:14px;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.12)}.metric strong{font:600 2.35rem/1 Georgia,serif;color:#fff}.metric span{color:#b8cbc8;font-size:.89rem}.source-note{display:flex;gap:12px;align-items:center;background:rgba(255,255,255,.07);padding:15px;border-radius:13px;margin-top:22px}.source-note>span{display:grid;place-items:center;flex:0 0 30px;height:30px;border-radius:50%;background:var(--green-2);font-weight:900}.source-note p{margin:0;color:#c9d8d5;font-size:.78rem;line-height:1.45}.source-note strong{color:#fff}
.principles-strip{background:#fff;border-bottom:1px solid var(--line)}.principles-grid{display:grid;grid-template-columns:repeat(3,1fr)}.principles-grid p{margin:0;padding:24px 30px;border-right:1px solid var(--line)}.principles-grid p:first-child{padding-left:0}.principles-grid p:last-child{border:0}.principles-grid strong,.principles-grid span{display:block}.principles-grid strong{font-size:.86rem}.principles-grid span{color:var(--muted);font-size:.78rem}.section{padding-block:92px}.section-heading{display:grid;grid-template-columns:1fr minmax(280px,.52fr);gap:60px;align-items:end;margin-bottom:40px}.section-heading h2{font-size:clamp(2.1rem,4vw,3.6rem);margin:0}.section-heading>p{color:var(--muted);margin:0}
.guide-groups{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.guide-group{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden;box-shadow:0 8px 28px rgba(16,42,46,.05)}.guide-group-heading{display:flex;align-items:center;gap:14px;padding:22px;border-bottom:1px solid var(--line);background:linear-gradient(135deg,#fbfdfc,#f4f8f6)}.category-icon{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--mint);color:var(--green);font-size:.72rem;font-weight:900;letter-spacing:.06em}.guide-group h3{font-size:1.12rem;margin:0}.guide-group-heading p{margin:3px 0 0;color:var(--muted);font-size:.75rem}.market-links{display:grid}.market-links a{display:flex;justify-content:space-between;gap:12px;padding:13px 20px;border-bottom:1px solid #edf1ef;text-decoration:none;font-size:.84rem;font-weight:700}.market-links a:last-child{border-bottom:0}.market-links a span:last-child{color:var(--green)}.market-links a:hover{background:#f5fbf8;color:var(--green)}
.method-section{background:var(--ink);color:#fff;padding-block:92px}.section-heading.light>p{color:#aebfbc}.section-heading.light .eyebrow{color:#81d5bd}.method-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;list-style:none;padding:0;margin:42px 0 0;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.13);border-radius:var(--radius);overflow:hidden}.method-grid li{background:var(--ink);padding:28px}.method-grid li>span{font:600 1.55rem Georgia,serif;color:#81d5bd}.method-grid h3{font-size:1.05rem;margin:26px 0 10px}.method-grid p{color:#adbfbc;font-size:.85rem;margin:0}.closed-panel{display:grid;grid-template-columns:1fr auto;align-items:center;gap:40px;background:var(--cream);border:1px solid #e8dfca;border-radius:22px;padding:38px 42px}.closed-panel h2{font-size:2rem;margin:0 0 10px}.closed-panel p:not(.eyebrow){color:var(--muted);margin:0;max-width:720px}
.page-hero{background:linear-gradient(140deg,#f4faf7,#fff 62%,#f7f3e8);border-bottom:1px solid var(--line);padding:58px 0 48px}.page-hero.compact{padding-block:52px}.breadcrumbs{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:.76rem;margin-bottom:34px}.breadcrumbs a{color:var(--green);text-decoration:none;font-weight:750}.page-hero h1{font-size:clamp(2.4rem,5vw,4.5rem);max-width:980px}.page-summary{color:var(--muted);font-size:1.05rem;max-width:760px;margin:22px 0 0}.page-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:32px}.page-meta>span{min-width:150px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 15px;font-weight:800;font-size:.8rem}.page-meta small{display:block;color:var(--muted);font-size:.63rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:3px}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:64px;align-items:start;padding-block:64px}.research-article{min-width:0}.research-article h2{font-size:1.75rem;margin:54px 0 15px}.research-article h2:first-of-type{margin-top:40px}.research-article p,.research-article li{color:#334b4e}.research-article ul,.research-article ol{padding-left:1.35rem}.research-article li{margin-bottom:10px}.research-article a{color:var(--green);font-weight:750;text-underline-offset:3px}.notice{background:#fff7e6;border:1px solid #ead5a5;border-left:5px solid var(--gold);padding:17px 18px;border-radius:11px;color:#5c4923;font-size:.86rem}.article-sidebar{position:sticky;top:102px;display:grid;gap:14px}.sidebar-card{border:1px solid var(--line);border-radius:15px;padding:21px;background:#fff}.sidebar-card .card-kicker{color:var(--green)}.status-line{display:flex;align-items:center;gap:10px;font-size:.88rem}.sidebar-card dl{margin:18px 0 0}.sidebar-card dl div{display:flex;justify-content:space-between;padding:10px 0;border-top:1px solid #edf1ef;font-size:.78rem}.sidebar-card dt{color:var(--muted)}.sidebar-card dd{margin:0;font-weight:800}.sidebar-warning{background:var(--ink);color:#fff;border-color:var(--ink)}.sidebar-warning h2{font-size:1rem;letter-spacing:-.01em;margin:0 0 9px}.sidebar-warning p{color:#b5c6c3;font-size:.78rem;margin:0}.sidebar-link{display:flex;justify-content:space-between;text-decoration:none;color:var(--green);font-size:.78rem;font-weight:850;padding:5px}.list-links{grid-template-columns:repeat(2,1fr);gap:10px}.list-links a{border:1px solid var(--line);border-radius:11px}
.site-footer{background:#091f22;color:#fff;padding-top:64px}.footer-grid{display:grid;grid-template-columns:1fr 1.2fr 1fr;gap:70px}.brand-footer .brand-mark{background:#fff;color:var(--ink)}.brand-footer strong{color:#fff}.footer-grid h2{font-size:.84rem;letter-spacing:0;text-transform:uppercase;margin:0 0 13px}.footer-grid p{color:#aabebb;font-size:.78rem;margin:15px 0 0}.footer-bottom{display:flex;justify-content:space-between;color:#79918e;font-size:.7rem;border-top:1px solid rgba(255,255,255,.1);padding-block:22px;margin-top:48px}
@media(max-width:900px){.primary-nav{display:none}.status-chip{margin-left:auto}.hero-grid{grid-template-columns:1fr;min-height:auto;gap:42px;padding-block:64px}.research-card{max-width:560px}.guide-groups,.method-grid{grid-template-columns:repeat(2,1fr)}.section-heading{grid-template-columns:1fr;gap:16px}.article-grid{grid-template-columns:1fr;gap:30px}.article-sidebar{position:static;grid-template-columns:repeat(2,1fr)}.sidebar-link{grid-column:1/-1}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.closed-panel{grid-template-columns:1fr}.list-links{grid-template-columns:1fr}}
@media(max-width:620px){.shell{width:min(100% - 28px,var(--shell))}.header-inner{height:68px}.status-chip{display:none}.hero-grid{padding-block:48px}.hero h1{font-size:2.75rem}.hero-lede{font-size:1rem}.hero-actions{display:grid}.trust-list{display:grid;gap:7px}.research-card{padding:25px}.principles-grid,.guide-groups,.method-grid{grid-template-columns:1fr}.principles-grid p,.principles-grid p:first-child{padding:17px 0;border-right:0;border-bottom:1px solid var(--line)}.section,.method-section{padding-block:62px}.method-grid li{padding:24px}.closed-panel{padding:27px 23px}.page-hero{padding-block:42px}.page-hero h1{font-size:2.55rem}.page-meta{display:grid}.page-meta>span{width:100%}.article-grid{padding-block:38px}.research-article h2{font-size:1.45rem;margin-top:42px}.article-sidebar{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:30px}.footer-grid>div:first-child{grid-column:auto}.footer-bottom{display:grid;gap:6px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}