*{box-sizing:border-box}
:root{--bg:#fff;--ink:#242424;--muted:#6b6b6b;--soft:#f7f7f5;--line:#e6e6e6;--green:#1a8917;--green2:#12670f;--max:1180px;--article:760px;--blue:#315b8a}
html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;line-height:1.58;-webkit-font-smoothing:antialiased}a{color:inherit}.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{border-bottom:1px solid var(--line);background:rgba(255,255,255,.97);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}.nav{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{font-family:Georgia,"Times New Roman",serif;font-size:1.7rem;font-weight:700;letter-spacing:-.045em;text-decoration:none;color:#111}.nav-right{display:flex;align-items:center;gap:18px}.nav-right>a.text-nav{font-size:.88rem;text-decoration:none;color:var(--muted)}.nav-right>a.text-nav:hover{color:#111}
.store-badges{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.store-badge{display:inline-flex;align-items:center;text-decoration:none;line-height:0}.store-badge img{display:block;height:40px;width:auto}.store-badge.google img{height:52px;margin:-6px -8px}.store-badge:hover{opacity:.86}.hero-store .store-badge img{height:49px}.hero-store .store-badge.google img{height:63px;margin:-7px -9px}
.home-hero{padding:72px 0 58px;border-bottom:1px solid var(--line)}.home-hero-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(320px,.8fr);gap:64px;align-items:center}.eyebrow{font-size:.77rem;color:var(--green);font-weight:700;margin-bottom:12px}.home-hero h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(3.4rem,7vw,6.1rem);line-height:.96;letter-spacing:-.055em;margin:0 0 22px;color:#111}.home-hero .lead{font-family:Georgia,"Times New Roman",serif;font-size:1.28rem;line-height:1.52;color:var(--muted);max-width:730px;margin:0}.hero-store{display:flex;align-items:center;gap:5px;flex-wrap:wrap;margin:28px 0 12px}.hero-secondary{font-size:.87rem;color:var(--muted);text-decoration:none}.hero-secondary:hover{color:#111}.hero-facts{display:flex;gap:22px;flex-wrap:wrap;padding-top:24px;margin-top:24px;border-top:1px solid var(--line)}.hero-fact{min-width:145px}.hero-fact strong{display:block;font-size:.9rem;color:#111;margin-bottom:2px}.hero-fact span{display:block;font-size:.79rem;color:var(--muted);line-height:1.35}
.app-card{background:#fafaf8;border:1px solid #ecece8;border-radius:16px;padding:28px}.app-card .label{font-size:.74rem;text-transform:uppercase;letter-spacing:.08em;color:var(--green);font-weight:750}.app-card h2{font-family:Georgia,"Times New Roman",serif;margin:5px 0 17px;font-size:1.9rem;line-height:1.13;letter-spacing:-.025em}.app-card-item{display:grid;grid-template-columns:28px 1fr;gap:11px;padding:13px 0;border-top:1px solid #e8e8e4}.app-card-item:first-of-type{border-top:0}.app-card-num{width:25px;height:25px;border-radius:50%;background:#111;color:#fff;display:grid;place-items:center;font-size:.72rem;font-weight:750}.app-card-item strong{display:block;font-size:.91rem;margin-bottom:2px}.app-card-item span{display:block;color:var(--muted);font-size:.82rem;line-height:1.42}
.home-intro{padding:42px 0 8px}.home-intro-row{display:flex;justify-content:space-between;gap:30px;align-items:end}.home-intro h2{font-family:Georgia,"Times New Roman",serif;font-size:2.1rem;line-height:1.12;letter-spacing:-.03em;margin:0}.home-intro p{max-width:520px;margin:0;color:var(--muted);font-size:.95rem;line-height:1.55}.home-featured{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);gap:46px;padding:26px 0 40px;border-bottom:1px solid var(--line)}.home-featured-main{text-decoration:none;padding-right:10px}.home-featured-main h3{font-family:Georgia,"Times New Roman",serif;font-size:clamp(2.1rem,4vw,3.5rem);line-height:1.06;letter-spacing:-.035em;margin:9px 0 14px}.home-featured-main p{font-family:Georgia,"Times New Roman",serif;font-size:1.13rem;line-height:1.55;color:var(--muted);margin:0}.read-meta{font-size:.79rem;color:var(--muted);margin-top:16px}.home-featured-side{border-left:1px solid var(--line);padding-left:30px}.home-featured-side h3{font-size:.83rem;margin:0 0 12px}.mini-story{display:block;text-decoration:none;padding:15px 0;border-top:1px solid var(--line)}.mini-story:first-of-type{border-top:0;padding-top:0}.mini-story strong{font-family:Georgia,serif;font-size:1.08rem;line-height:1.26}.mini-story span{display:block;color:var(--muted);font-size:.77rem;margin-top:6px}.section-title{display:flex;justify-content:space-between;align-items:center;margin:42px 0 8px;padding-bottom:10px;border-bottom:2px solid #222}.section-title h2{font-size:.94rem;margin:0}.section-title span{font-size:.78rem;color:var(--muted)}.story-list{max-width:890px}.story{display:grid;grid-template-columns:1fr 132px;gap:30px;padding:27px 0;border-bottom:1px solid var(--line);text-decoration:none}.story h3{font-family:Georgia,serif;font-size:1.62rem;line-height:1.16;letter-spacing:-.02em;margin:4px 0 8px}.story p{font-family:Georgia,serif;margin:0;color:var(--muted);font-size:1rem;line-height:1.5}.story .visual{background:var(--soft);height:90px;display:grid;place-items:center;font-family:Georgia,serif;color:#aaa;font-size:2.1rem}.story:hover h3{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}.download-strip{margin:54px 0 5px;padding:28px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:28px}.download-strip h3{font-family:Georgia,serif;font-size:1.65rem;line-height:1.15;margin:0 0 5px}.download-strip p{margin:0;color:var(--muted);font-size:.91rem}
.article-page{padding:52px 0 82px}.article{max-width:var(--article);margin:auto}.article-back{display:inline-block;color:var(--muted);font-size:.86rem;text-decoration:none;margin-bottom:32px}.category{font-size:.79rem;color:var(--green);font-weight:700;margin-bottom:11px}.article h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(2.65rem,6vw,4.55rem);line-height:1.02;letter-spacing:-.045em;margin:0 0 18px;color:#111}.dek{font-family:Georgia,serif;font-size:1.31rem;line-height:1.5;color:var(--muted);margin:0 0 22px}.author-row{display:flex;align-items:center;gap:11px;padding:17px 0 25px;border-bottom:1px solid var(--line)}.avatar{width:36px;height:36px;border-radius:50%;background:#111;color:#fff;display:grid;place-items:center;font-family:Georgia,serif;font-weight:700}.author-text{font-size:.82rem}.author-text span{display:block;color:var(--muted);margin-top:2px}.toc{margin:28px 0;padding:20px 0;border-bottom:1px solid var(--line)}.toc strong{font-size:.83rem}.toc a{display:block;text-decoration:none;color:var(--muted);font-size:.87rem;padding:3px 0}.toc a:hover{color:#111}.takeaways{margin:28px 0 34px;padding:22px 24px;background:var(--soft);border-radius:5px}.takeaways h2{font-family:Georgia,serif;font-size:1.08rem;margin:0 0 10px}.takeaways ul{margin:0;padding-left:20px}.takeaways li{font-family:Georgia,serif;font-size:1.06rem;line-height:1.58;margin:6px 0}.article-body h2{font-family:Georgia,serif;font-size:1.95rem;line-height:1.18;letter-spacing:-.02em;margin:1.9em 0 .62em;color:#111}.article-body h3{font-family:Georgia,serif;font-size:1.32rem;line-height:1.3;margin:1.55em 0 .45em}.article-body p{font-family:Georgia,serif;font-size:1.17rem;line-height:1.78;margin:0 0 1.28em;color:#292929}.article-body ul,.article-body ol{font-family:Georgia,serif;font-size:1.12rem;line-height:1.72;padding-left:24px}.article-body li{margin:.4em 0}.article-body a{color:var(--green2);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}.term-box,.example-box,.warning-box{margin:30px 0;padding:20px 22px;border-radius:6px}.term-box{background:#f5f7f9;border-left:4px solid var(--blue)}.example-box{background:#f8f8f6;border-left:4px solid #999}.warning-box{background:#fff8ed;border-left:4px solid #bd781f}.term-box strong,.example-box strong,.warning-box strong{display:block;margin-bottom:6px}.term-box p,.example-box p,.warning-box p{font-size:1.02rem;line-height:1.62;margin:.45em 0}.data-table{width:100%;border-collapse:collapse;margin:28px 0;font-size:.94rem}.data-table th,.data-table td{text-align:left;vertical-align:top;padding:12px 11px;border-bottom:1px solid var(--line)}.data-table th{font-weight:700;background:#fafafa}.data-table td:first-child{font-weight:600}.formula{display:block;background:#f6f6f4;border-radius:5px;padding:14px 16px;margin:18px 0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.93rem}.inline-cta{margin:38px 0;padding:23px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.inline-cta strong{font-family:Georgia,serif;font-size:1.22rem;display:block;margin-bottom:6px}.inline-cta p{font-family:inherit;font-size:.92rem;line-height:1.5;color:var(--muted);margin:0 0 14px}.inline-cta a{display:inline-flex;background:#111;color:#fff;text-decoration:none;border-radius:999px;padding:9px 15px;font-size:.85rem}.sources{margin-top:42px;padding-top:20px;border-top:1px solid var(--line)}.sources h2{font-size:.86rem;margin:0 0 10px}.sources a{display:block;font-size:.84rem;color:var(--muted);margin:7px 0;text-decoration:none}.sources a:hover{color:#111;text-decoration:underline}.disclosure{margin:30px 0 0;color:var(--muted);font-size:.8rem;line-height:1.5}.related{max-width:var(--article);margin:55px auto 0;padding-top:22px;border-top:1px solid var(--line)}.related h2{font-size:.88rem;margin:0 0 12px}.related a{display:block;text-decoration:none;padding:13px 0;border-bottom:1px solid var(--line);font-family:Georgia,serif;font-size:1.14rem}.related a:hover{text-decoration:underline}.page{max-width:var(--article);margin:auto;padding:58px 0 90px}.page h1{font-family:Georgia,serif;font-size:3.25rem;letter-spacing:-.04em;line-height:1.05}.page h2{font-family:Georgia,serif;margin-top:2em}.page p{font-family:Georgia,serif;font-size:1.11rem;line-height:1.72;color:#333}.footer{border-top:1px solid var(--line);padding:28px 0 42px;color:var(--muted);font-size:.81rem}.footer-row{display:flex;justify-content:space-between;gap:24px}.footer-links{display:flex;gap:17px;flex-wrap:wrap}.footer a{text-decoration:none}.footer a:hover{color:#111}
@media(max-width:940px){.home-hero-grid{grid-template-columns:1fr;gap:34px}.app-card{max-width:680px}.home-featured{grid-template-columns:1fr}.home-featured-side{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:24px}}
@media(max-width:720px){.container{width:min(var(--max),calc(100% - 28px))}.nav{min-height:58px}.brand{font-size:1.44rem}.nav-right>a.text-nav{display:none}.nav-right .store-badge img{height:32px}.nav-right .store-badge.google img{height:42px;margin:-5px -7px}.home-hero{padding:48px 0 42px}.home-hero h1{font-size:3.12rem}.home-hero .lead{font-size:1.12rem}.hero-store .store-badge img{height:43px}.hero-store .store-badge.google img{height:56px}.home-intro-row{display:block}.home-intro p{margin-top:12px}.story{grid-template-columns:1fr 72px;gap:16px;padding:21px 0}.story h3{font-size:1.38rem}.story p{display:none}.story .visual{height:68px;font-size:1.55rem}.download-strip{display:block}.download-strip .store-badges{margin-top:18px}.article-page{padding-top:34px}.article h1{font-size:2.68rem}.dek{font-size:1.15rem}.article-body p{font-size:1.1rem;line-height:1.72}.article-body h2{font-size:1.64rem}.data-table{font-size:.82rem}.data-table th,.data-table td{padding:9px 7px}.takeaways{padding:18px}.footer-row{display:block}.footer-links{margin-top:14px}}