:root{--ink:#17352b;--green:#187a55;--muted:#566e61;--line:#dce9df;--mint:#eaf5ec;--cream:#f8faf7;--white:#fff;--shadow:0 18px 60px rgba(23,53,43,.055)}*{box-sizing:border-box}html{scroll-behavior:smooth;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink)}body{margin:0;background:var(--cream);line-height:1.7}a{color:#146b4c}a:focus-visible{outline:3px solid #41b68c;outline-offset:4px;border-radius:3px}.container{max-width:1120px;width:calc(100% - 40px);margin:0 auto}.site-header{background:#fff;border-bottom:1px solid var(--line)}.nav{display:flex;align-items:center;justify-content:space-between;gap:22px;min-height:76px}.brand{color:var(--ink);font-size:26px;font-weight:850;letter-spacing:-1.2px;text-decoration:none;white-space:nowrap}.brand strong{color:var(--green)}.brand .ai{font-size:12px;letter-spacing:0;color:var(--green);padding:4px 7px;margin-left:5px;background:#ecf7ee;border-radius:7px;vertical-align:middle}.nav-links{display:flex;flex-wrap:wrap;gap:16px;align-items:center}.nav-links a{text-decoration:none;font-weight:650;font-size:13px;color:#416252}.nav-links a:hover{text-decoration:underline}.nav-links .nav-cta{color:white;background:#15764e;border-radius:10px;padding:10px 15px}.breadcrumbs{padding:23px 0 8px;font-size:12px;color:#637c6d}.breadcrumbs a{color:#4a6958;text-decoration:none}.breadcrumbs span{margin:0 9px;color:#95a69b}.hero{padding:38px 0 52px;display:grid;grid-template-columns:1.55fr .85fr;gap:42px;align-items:center}.eyebrow{text-transform:uppercase;letter-spacing:.15em;font-size:11px;font-weight:800;color:#238761}.hero h1{font-size:clamp(35px,4.9vw,58px);line-height:1.13;letter-spacing:-2.8px;margin:14px 0 20px}.hero h1 em{font-style:normal;color:var(--green)}.lead{font-size:17px;line-height:1.75;color:#526c5e;max-width:760px;margin:0 0 26px}.actions{display:flex;gap:11px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;gap:8px;padding:12px 18px;text-decoration:none;border-radius:11px;font-size:14px;font-weight:770;min-height:45px}.button-primary{background:#177550;color:#fff}.button-secondary{border:1px solid #b6d0bf;background:#fff;color:#1b694a}.mini-note{font-size:12px;color:#648073;margin:13px 0 0}.hero-panel{background:#fff;border:1px solid #d7e8db;border-radius:26px;padding:25px;box-shadow:var(--shadow);position:relative}.hero-panel .panel-label{font-weight:850;color:#177250;letter-spacing:.07em;font-size:11px;text-transform:uppercase}.hero-panel h2{font-size:21px;letter-spacing:-.6px;line-height:1.3;margin:11px 0 12px}.hero-panel ul{list-style:none;padding:0;margin:0}.hero-panel li{padding:9px 0;border-bottom:1px solid #edf2ec;font-size:13px;color:#385c49}.hero-panel li:before{content:"✓";color:#1a8c5e;font-weight:800;margin-right:10px}.hero-panel li:last-child{border-bottom:0}.page-main{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:28px;align-items:start;margin-bottom:55px}.article{background:#fff;border:1px solid #e3eae4;border-radius:22px;padding:clamp(22px,3.8vw,48px);box-shadow:var(--shadow);overflow-wrap:anywhere}.article h2{font-size:clamp(22px,2.6vw,29px);letter-spacing:-.6px;line-height:1.35;margin:31px 0 12px}.article h2:first-child{margin-top:0}.article h3{font-size:17px;margin:24px 0 8px;line-height:1.4}.article p,.article li{color:#485f52;font-size:15px}.article ul,.article ol{padding-left:23px}.article li{margin:9px 0}.article strong{color:#204d36}.example{background:#f2f8f3;border:1px solid #d7e9d9;border-radius:13px;padding:20px 22px;margin:24px 0}.example p{margin:7px 0}.example .example-label{font-weight:800;color:#277753;font-size:12px;text-transform:uppercase;letter-spacing:.07em}.example + .example{margin-top:12px}.comparison{overflow-x:auto;margin:20px 0}.comparison table{width:100%;border-collapse:collapse;font-size:13px;min-width:450px}.comparison th{text-align:left;background:#eaf5ed;color:#26563d}.comparison td,.comparison th{border:1px solid #d8e6db;padding:12px 15px;vertical-align:top}.note{border-left:4px solid #319469;padding:14px 18px;background:#f0f8f2;border-radius:0 12px 12px 0;color:#28513d;font-size:14px;margin:23px 0}.toc{background:#fff;border:1px solid #e3eae4;border-radius:20px;padding:22px;position:sticky;top:20px}.toc strong{font-size:14px}.toc ol{padding-left:19px;font-size:13px}.toc li{margin:10px 0}.toc a{text-decoration:none;color:#37624a}.toc a:hover{text-decoration:underline}.related{padding:4px 0 65px}.related h2{letter-spacing:-.5px}.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.related-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:22px;display:block;text-decoration:none;color:var(--ink)}.related-card strong{font-size:16px}.related-card p{font-size:13px;color:#60766b;line-height:1.65;margin:8px 0 0}.related-card:hover{border-color:#9fcbb0;box-shadow:0 9px 30px #154d2c12}.closing{padding:33px;border-radius:20px;background:linear-gradient(105deg,#ddf2e4,#f2faf2);border:1px solid #c7e5d2;margin:35px 0 5px}.closing h2{margin:0 0 10px}.closing p{margin:0 0 18px}.site-footer{padding:26px 0;background:#fff;border-top:1px solid var(--line);font-size:12px;color:#677c6e}.footer-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.footer-links{display:flex;flex-wrap:wrap;gap:14px}.footer-links a{text-decoration:none;color:#35664b}@media(max-width:900px){.hero{grid-template-columns:1fr}.page-main{grid-template-columns:1fr}.toc{position:static}.related-grid{grid-template-columns:1fr}}@media(max-width:620px){.container{width:calc(100% - 28px)}.nav{flex-wrap:wrap;padding:12px 0}.nav-links{width:100%;gap:12px}.nav-links a{font-size:12px}.hero{padding:25px 0 35px}.hero h1{letter-spacing:-1.4px}.lead{font-size:15px}.article{padding:21px}.related{padding-bottom:40px}}
.skip-link{position:absolute;left:12px;top:-100px;z-index:99;padding:12px 18px;background:#fff;color:#176f4c;border:2px solid #176f4c;border-radius:10px;font-weight:800}.skip-link:focus{top:10px}

/* Keep guide navigation and cards usable on narrow viewports. */
@media(max-width:620px){
  .nav{gap:9px;min-width:0}
  .brand{font-size:23px}
  .nav-links{gap:7px}
  .nav-links a{display:inline-flex;align-items:center;min-height:42px;padding:8px 10px;border-radius:9px;background:#f2f8f2;font-size:12px}
  .nav-links .nav-cta{background:#15764e}
  .hero{gap:18px}
  .hero h1{font-size:clamp(29px,8.5vw,42px);letter-spacing:-1.4px;overflow-wrap:anywhere}
  .hero-panel,.article{min-width:0}
  .hero-panel{padding:20px}
  .button{max-width:100%;white-space:normal}
  .comparison{max-width:100%;overflow-x:auto;overscroll-behavior-inline:contain}
  .footer-links{flex-wrap:wrap}
}

/* Compact mobile guide navigation: logo and menu share a single header row. */
.guide-mobile-menu{display:none}
@media(max-width:760px){
  .site-header{position:relative;z-index:30}
  .site-header .nav{position:relative;display:flex;flex-wrap:nowrap;align-items:center;justify-content:space-between;min-height:64px;padding:10px 0;gap:12px}
  .site-header .brand{flex:0 1 auto;min-width:0;white-space:nowrap;font-size:clamp(20px,5.4vw,24px);letter-spacing:-.8px}
  .site-header .nav-links{display:none}
  .site-header .guide-mobile-menu{display:block;margin-left:auto;flex:0 0 auto}
  .guide-mobile-menu summary{list-style:none;display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:9px 15px;border:1px solid #bed8c8;border-radius:11px;background:#eff8f1;color:#166c4a;font-size:13px;font-weight:800;cursor:pointer;user-select:none}
  .guide-mobile-menu summary::-webkit-details-marker{display:none}
  .guide-mobile-menu summary span{font-size:18px;line-height:1}
  .guide-mobile-menu[open] summary{background:#e1f2e5;border-color:#8ebc9e}
  .guide-mobile-menu summary:focus-visible{outline:3px solid #47b58e;outline-offset:3px}
  .guide-mobile-links{position:absolute;top:calc(100% - 1px);right:0;left:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;padding:14px;background:#fff;border:1px solid #dce9df;border-radius:0 0 15px 15px;box-shadow:0 16px 35px #123d2426;z-index:40}
  .guide-mobile-links a{display:flex;justify-content:center;align-items:center;min-width:0;min-height:46px;padding:10px 8px;background:#f3f8f4;border:1px solid #e1ece3;border-radius:10px;text-align:center;text-decoration:none;color:#285f43;font-size:12px;font-weight:750;line-height:1.3;overflow-wrap:anywhere}
  .guide-mobile-links a.nav-cta{grid-column:1/-1;color:#fff;background:#15764e;border-color:#15764e;font-size:13px}
}
@media(max-width:330px){
  .site-header .brand{font-size:19px}
  .guide-mobile-menu summary{padding:9px 12px}
}