*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Poppins,Arial,sans-serif;color:#14241d;background:#f7fbf9;line-height:1.68}a{color:#078a52;text-decoration:none}a:hover{color:#045f3a}.wrap{width:min(1240px,94%);margin:auto}.top{position:sticky;top:0;z-index:50;background:#003e31;border-bottom:1px solid rgba(255,255,255,.08);box-shadow:0 8px 28px rgba(0,48,37,.18)}.nav{min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800}.brand img{width:40px;height:40px;border-radius:12px}.menu{display:flex;align-items:center;gap:4px;flex-wrap:wrap}.menu a{color:#eafff7;padding:9px 10px;border-radius:9px;font-size:.83rem;font-weight:600}.menu a:hover{background:#09c87a;color:#002c21}.mobile-toggle{display:none;background:#16dc8b;color:#003b2d;border:0;border-radius:9px;padding:9px 13px;font-weight:800}.layout{display:grid;grid-template-columns:235px minmax(0,1fr);gap:22px;align-items:start;padding:24px 0 64px}.toc{position:sticky;top:92px;background:#fff;border:1px solid #d9eee5;border-radius:14px;padding:18px 14px;box-shadow:0 10px 34px rgba(0,70,49,.08);max-height:calc(100vh - 110px);overflow:auto}.toc strong{display:block;color:#087d4c;margin:0 6px 10px;font-size:.95rem}.toc a{display:block;padding:6px 8px;border-left:2px solid #dceee6;font-size:.76rem;line-height:1.3;color:#4a6258}.toc a:hover{border-left-color:#11cf7c;background:#effbf6;color:#057d4a}.article-content{background:transparent;border:0;padding:0;box-shadow:none;overflow:visible}.home-hero{position:relative;min-height:430px;overflow:hidden;border-radius:0 0 26px 26px;background:radial-gradient(circle at 82% 25%,rgba(24,220,139,.24),transparent 28%),linear-gradient(135deg,#003c2e,#005642 62%,#003b2d);padding:clamp(34px,5vw,68px);margin-bottom:22px;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:30px;align-items:center;box-shadow:0 20px 50px rgba(0,61,45,.18)}.hero-copy{position:relative;z-index:2}.home-hero h1{font-size:clamp(2.35rem,5vw,4.4rem);line-height:1.02;letter-spacing:-.045em;color:#fff;margin:0 0 20px;max-width:780px;border:0;padding:0}.home-hero h1::first-line{color:#fff}.home-hero p{color:#d9f7eb;max-width:70ch;font-size:1rem}.home-hero a{color:#33ef9f}.hero-visual{position:relative;min-height:330px}.phone{position:absolute;width:190px;height:365px;border:7px solid #0b1713;border-radius:34px;background:#f7fffb;box-shadow:0 28px 50px rgba(0,0,0,.35);padding:18px 10px;transform:rotate(3deg);right:26px;top:0}.phone-b{right:160px;top:38px;transform:rotate(-6deg) scale(.92);opacity:.95}.phone:before{content:"";position:absolute;top:8px;left:50%;width:70px;height:15px;transform:translateX(-50%);border-radius:20px;background:#0b1713}.phone-screen{margin-top:22px;border-radius:18px;overflow:hidden}.phone-screen:before{content:"";display:block;height:52px;background:#087b58;margin-bottom:10px}.phone-screen i{display:block;height:34px;margin:8px 4px;border-radius:8px;background:linear-gradient(90deg,#c7f5df 0 22%,#edf8f3 22%)}.article-content>h2,.article-content>p,.article-content>h3,.article-content>h4,.article-content>table,.article-content>ul,.article-content>ol,.article-content>.feature-grid,.article-content>.faq-stack{background:#fff}.article-content>p,.article-content>h3,.article-content>h4,.article-content>ul,.article-content>ol{padding-left:clamp(22px,4vw,44px);padding-right:clamp(22px,4vw,44px)}.article-content>p{margin:0;padding-bottom:18px;color:#40554c}.article-content h2{font-size:clamp(1.55rem,2.5vw,2.15rem);line-height:1.2;color:#11271f;margin:22px 0 0;padding:26px clamp(22px,4vw,44px) 14px;border:0;background:#fff}.article-content h3{font-size:1.14rem;color:#143d2e;margin:0;padding-top:18px;padding-bottom:8px}.article-content h4{font-size:1rem;color:#126d46}.article-content strong{color:#142b21}.article-content table{width:calc(100% - clamp(44px,8vw,88px));margin:8px clamp(22px,4vw,44px) 24px;border-collapse:separate;border-spacing:0;border:1px solid #d8ebe3;border-radius:10px;overflow:hidden;box-shadow:0 8px 24px rgba(0,70,49,.05)}.article-content th{background:#eff9f5;color:#123b2d;text-align:left;font-size:.86rem}.article-content th,.article-content td{padding:11px 13px;border-bottom:1px solid #e2efe9;vertical-align:top;font-size:.88rem}.article-content tr:last-child td{border-bottom:0}.section-title{position:relative}.section-title:after{content:"";display:block;width:46px;height:3px;background:#10cd7a;border-radius:5px;margin-top:10px}.feature-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;padding:10px clamp(22px,4vw,44px) 34px}.feature-card{border:1px solid #dceee6;border-radius:13px;padding:17px;background:linear-gradient(145deg,#fff,#f5fcf8);box-shadow:0 8px 25px rgba(0,74,51,.06);transition:.2s}.feature-card:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(0,74,51,.1)}.feature-card h3{padding:0;margin:0 0 7px;font-size:1rem}.feature-card h3:before{content:"✦";display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;margin-right:8px;background:#c9f8e1;color:#078c53}.feature-card p{padding:0!important;margin:0;color:#53685f;font-size:.86rem;line-height:1.55}.faq-stack{padding:10px clamp(22px,4vw,44px) 32px}.faq-stack details{border:1px solid #dcebe5;border-radius:10px;margin:8px 0;background:#fbfefc}.faq-stack summary{cursor:pointer;padding:13px 16px;font-weight:700;color:#173b2d;list-style:none}.faq-stack summary:after{content:"+";float:right;color:#0aa866;font-size:1.25rem}.faq-stack details[open] summary:after{content:"−"}.faq-stack p{padding:0 16px 15px;margin:0;color:#52665d}.article-content>h2[id="gb-whatsapp-vs-official-whatsapp"]{border-top:8px solid #eef8f3}.article-content>h2[id="is-gb-whatsapp-safe-to-use"]{background:#fff9ea;border-top:1px solid #f1dfac}.site-footer,.footer{background:linear-gradient(135deg,#003b2e,#00271f);color:#cce8dc;padding:44px 0 24px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}.footer h3,.site-footer h3{color:#fff}.footer a,.site-footer a{color:#cce8dc;margin:6px 0}.copyright{text-align:center;border-top:1px solid rgba(255,255,255,.1);margin-top:28px;padding-top:18px;font-size:.85rem}.blog-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.post-card{background:#fff;border:1px solid #dce9e2;border-radius:16px;padding:22px}.breadcrumbs{font-size:.86rem;color:#64766d;margin-bottom:18px}.notice{background:#fff8e8;border:1px solid #f0d998;padding:15px;border-radius:12px}.related{margin-top:42px;padding-top:24px;border-top:1px solid #e1ece6}.pagination-links{display:flex;justify-content:space-between;gap:16px;margin-top:28px}.pagination-links a{background:#eff9f3;padding:12px 16px;border-radius:10px;font-weight:700}
@media(max-width:1050px){.feature-grid{grid-template-columns:repeat(3,1fr)}.home-hero{grid-template-columns:1fr .65fr}.phone{right:0}.phone-b{display:none}}
@media(max-width:900px){.mobile-toggle{display:block}.menu{display:none;position:absolute;left:3%;right:3%;top:66px;background:#003e31;padding:12px;border-radius:14px}.menu.open{display:grid;grid-template-columns:1fr 1fr}.layout{grid-template-columns:1fr;padding-top:12px}.toc{position:relative;top:auto;max-height:none;order:2}.toc a{display:none}.toc.open a{display:block}.toc strong{cursor:pointer}.article-content{order:1}.home-hero{grid-template-columns:1fr;min-height:auto}.hero-visual{display:none}.feature-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.wrap{width:96%}.home-hero{padding:30px 20px;border-radius:0 0 18px 18px}.home-hero h1{font-size:2.35rem}.article-content h2{font-size:1.45rem}.feature-grid{grid-template-columns:1fr}.article-content table{display:block;overflow-x:auto;white-space:normal}.footer-grid{grid-template-columns:1fr}.menu.open{grid-template-columns:1fr}}
/* v5 readability + sample-inspired premium homepage */
.blog-toc{margin:28px 0 34px;border:1px solid #ccefe2;border-radius:18px;background:linear-gradient(145deg,#f7fffc,#ecfff7);box-shadow:0 12px 32px rgba(0,91,67,.08);overflow:hidden}.blog-toc summary{cursor:pointer;font-weight:800;font-size:1.08rem;padding:18px 22px;color:#073f34;list-style:none}.blog-toc summary::-webkit-details-marker{display:none}.blog-toc summary:after{content:'+';float:right;background:#d8fff0;width:28px;height:28px;border-radius:50%;display:grid;place-items:center}.blog-toc[open] summary:after{content:'−'}.blog-toc nav{padding:0 22px 20px}.blog-toc ul{columns:2;column-gap:34px;margin:0;padding-left:20px}.blog-toc li{break-inside:avoid;margin:7px 0}.blog-toc .toc-h3{font-size:.92rem;margin-left:12px}.blog-toc a{text-decoration:none;color:#176657}.blog-toc a:hover{color:#00a873}.article-content h4{font-size:1.08rem;margin:26px 0 9px;color:#075e54;padding-left:13px;border-left:4px solid #21d995}.article-content p{line-height:1.78}.faq-item{border:1px solid #d9eee7;border-radius:14px;margin:10px 0;background:#fff;box-shadow:0 5px 18px rgba(0,70,55,.05);overflow:hidden}.faq-item summary{padding:16px 18px;font-weight:750;cursor:pointer;list-style:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:'+';float:right;color:#00a873;font-size:1.3rem}.faq-item[open] summary:after{content:'−'}.faq-item p{padding:0 18px 16px;margin:0}
.hero-wow-panel{position:relative;min-height:360px;margin:22px 0 34px;border-radius:30px;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden;background:radial-gradient(circle at 50% 35%,rgba(42,255,175,.25),transparent 28%),linear-gradient(135deg,#002f29 0%,#005e4d 48%,#003e35 100%);box-shadow:0 26px 65px rgba(0,75,57,.28);isolation:isolate}.hero-wow-panel:before{content:'';position:absolute;inset:-50%;background:conic-gradient(from 0deg,transparent,rgba(44,255,177,.12),transparent 22%);animation:heroSpin 14s linear infinite;z-index:-1}.hero-wow-panel:after{content:'';position:absolute;inset:0;background:linear-gradient(115deg,transparent 30%,rgba(255,255,255,.08) 48%,transparent 66%);transform:translateX(-120%);animation:heroShine 5s ease-in-out infinite;z-index:-1}.hero-orb{width:230px;height:230px;border-radius:52px;display:grid;place-items:center;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.22);box-shadow:0 0 0 14px rgba(36,255,173,.05),0 28px 70px rgba(0,0,0,.35),inset 0 0 40px rgba(255,255,255,.08);backdrop-filter:blur(10px);transform:perspective(700px) rotateX(3deg)}.hero-orb img{width:190px;height:190px;border-radius:42px;filter:drop-shadow(0 18px 20px rgba(0,0,0,.28))}.hero-download-btn{margin-top:26px;min-width:240px;text-align:center;padding:16px 28px;border-radius:14px;background:linear-gradient(135deg,#28f0a4,#11cf88);color:#002f27!important;font-weight:900;text-decoration:none!important;box-shadow:0 12px 30px rgba(26,238,159,.35),inset 0 1px rgba(255,255,255,.7);transition:.2s}.hero-download-btn:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 18px 38px rgba(26,238,159,.45)}.spark,.ring{position:absolute;pointer-events:none}.spark{width:9px;height:9px;background:#52ffc0;border-radius:50%;box-shadow:0 0 20px #52ffc0}.spark-a{left:15%;top:24%}.spark-b{right:17%;top:35%;width:6px;height:6px}.spark-c{left:22%;bottom:20%;width:5px;height:5px}.ring{border:1px solid rgba(80,255,191,.22);border-radius:50%}.ring-a{width:420px;height:420px}.ring-b{width:520px;height:520px}@keyframes heroSpin{to{transform:rotate(360deg)}}@keyframes heroShine{50%,100%{transform:translateX(120%)}}
@media(max-width:760px){.blog-toc ul{columns:1}.hero-wow-panel{min-height:315px;border-radius:22px}.hero-orb{width:190px;height:190px}.hero-orb img{width:158px;height:158px}.ring-a{width:320px;height:320px}.ring-b{width:410px;height:410px}}
@media(prefers-reduced-motion:reduce){.hero-wow-panel:before,.hero-wow-panel:after{animation:none}}
/* v6 sample-matched homepage app card */
.sample-app-hero{margin:0 0 28px;background:linear-gradient(135deg,#087b58,#0aa86e);padding:28px 8px 8px;border-radius:0;box-shadow:0 18px 48px rgba(0,78,57,.16)}
.sample-app-hero>h1{margin:0;padding:10px 28px 26px!important;text-align:center;color:#fff!important;background:transparent!important;font-size:clamp(2rem,3.5vw,3.2rem)!important;line-height:1.12!important;border:0!important}
.sample-app-body{background:#fff;border-radius:16px 16px 10px 10px;display:grid;grid-template-columns:1fr 1.12fr;gap:44px;padding:30px;align-items:center}
.sample-app-left{text-align:center}.sample-logo-box{width:190px;height:190px;margin:0 auto 22px;border:3px solid #18342a;border-radius:15px;padding:5px;background:#fff;display:grid;place-items:center}.sample-logo-box img{width:100%;height:100%;object-fit:cover;border-radius:9px}
.sample-main-buttons{display:grid;grid-template-columns:1fr 1fr;gap:12px}.sample-download{display:block;padding:13px 18px;border-radius:28px;background:#08a86b;color:#fff!important;font-size:1.05rem;font-weight:800;box-shadow:0 8px 18px rgba(0,168,107,.18)}.sample-download:hover{background:#067f54;color:#fff}.sample-mirror{background:#0c9163}
.sample-platforms{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:16px}.sample-platforms a{border:1.5px solid #18342a;border-radius:24px;background:#10b979;color:#fff!important;font-weight:800;padding:7px 10px;line-height:1.2}
.sample-app-info{border-left:2px solid #1d2f28;padding-left:38px}.sample-info-title{font-size:clamp(1.55rem,2.5vw,2.15rem);font-weight:900;color:#11251e;margin-bottom:20px}.sample-info-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px 28px}.sample-info-item{display:grid;grid-template-columns:48px 1fr;gap:14px;align-items:center;min-height:52px;color:#243c33;line-height:1.3}.sample-info-item b{display:inline-block;color:#172b24;font-size:1rem;margin-bottom:3px}.sample-info-icon{width:46px;height:46px;border-radius:6px;background:#0aa86b;border:1px solid #076e49;color:#fff;display:grid;place-items:center;font-size:1.05rem;font-weight:900}
.sample-intro-copy{background:#fff;padding:26px clamp(22px,4vw,44px) 12px}.sample-intro-copy p{padding:0 0 18px!important;margin:0;color:#40554c}.sample-intro-copy a{color:#078a52}
@media(max-width:850px){.sample-app-body{grid-template-columns:1fr;gap:30px;padding:24px 18px}.sample-app-info{border-left:0;border-top:2px solid #e1ece7;padding:25px 0 0}.sample-info-title{text-align:center}.sample-app-hero>h1{padding-left:16px!important;padding-right:16px!important}}
@media(max-width:560px){.sample-main-buttons,.sample-info-grid{grid-template-columns:1fr}.sample-platforms{grid-template-columns:1fr}.sample-logo-box{width:160px;height:160px}.sample-app-hero{padding-top:18px}.sample-info-item{grid-template-columns:44px 1fr}.sample-info-icon{width:42px;height:42px}}
/* v7 — heading system, premium homepage features, mobile app-info layout, scroll-to-top */
:root{--heading-cream:#fff9ea;--ink:#062b28;--green:#08a86b;--green-dark:#006b4e}
/* Same heading treatment across homepage, blogs, pages and legal content */
.article-content>h2,.page-content h2,.post-content h2,main>h2,main article>h2{
background:var(--heading-cream)!important;color:var(--ink)!important;
border-top:1px solid #f0dfb0!important;border-bottom:0!important;
padding:26px clamp(22px,4vw,44px)!important;margin:26px 0 0!important;
font-weight:900!important;letter-spacing:-.02em;line-height:1.15;border-radius:0!important
}
.article-content>h3,.page-content h3,.post-content h3,main article>h3{
color:var(--ink)!important;font-weight:850!important;padding-top:22px!important
}
.article-content>h4,.page-content h4,.post-content h4,main article>h4{
color:#075e54!important;font-weight:800!important
}
/* Premium feature cards — homepage only */
.user-homepage-article .feature-grid{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;padding:26px clamp(22px,4vw,44px) 42px;background:linear-gradient(180deg,#fff 0%,#f2fff9 100%);overflow:hidden}
.user-homepage-article .feature-grid:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 10% 10%,rgba(17,207,124,.09),transparent 25%),radial-gradient(circle at 90% 90%,rgba(0,107,78,.08),transparent 26%);pointer-events:none}
.user-homepage-article .feature-card{position:relative;z-index:1;min-height:190px;border:1px solid rgba(5,139,86,.16);border-radius:22px;padding:24px 22px 22px;background:linear-gradient(145deg,rgba(255,255,255,.98),rgba(238,255,247,.96));box-shadow:0 14px 38px rgba(0,88,62,.10);overflow:hidden;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.user-homepage-article .feature-card:after{content:"";position:absolute;width:120px;height:120px;border-radius:50%;right:-54px;top:-58px;background:linear-gradient(135deg,rgba(26,230,148,.20),rgba(0,107,78,.03));transition:.25s}
.user-homepage-article .feature-card:hover{transform:translateY(-6px);box-shadow:0 22px 46px rgba(0,88,62,.16);border-color:rgba(5,168,107,.36)}
.user-homepage-article .feature-card h3{display:flex;align-items:center;gap:11px;padding:0!important;margin:0 0 12px!important;font-size:1.05rem!important;color:#082f27!important;background:transparent!important}
.user-homepage-article .feature-card h3:before{content:"✦";flex:0 0 42px;width:42px;height:42px;margin:0;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,#bff9df,#69eeb3);color:#006e4d;box-shadow:inset 0 0 0 1px rgba(0,126,82,.12),0 7px 18px rgba(0,157,99,.13);font-size:1rem}
.user-homepage-article .feature-card p{position:relative;z-index:1;color:#49645a!important;font-size:.9rem!important;line-height:1.65!important}
/* Scroll-to-top */
#scrollTopBtn{position:fixed;right:22px;bottom:22px;width:48px;height:48px;border:0;border-radius:14px;background:linear-gradient(135deg,#11c77d,#007f59);color:#fff;font-size:22px;font-weight:900;cursor:pointer;z-index:1000;box-shadow:0 12px 28px rgba(0,93,65,.28);opacity:0;visibility:hidden;transform:translateY(12px);transition:.2s}
#scrollTopBtn.show{opacity:1;visibility:visible;transform:none}#scrollTopBtn:hover{transform:translateY(-3px)}
@media(max-width:900px){.user-homepage-article .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){
/* two options per row on mobile */
.sample-info-grid{grid-template-columns:repeat(2,minmax(0,1fr))!important;gap:10px!important}
.sample-info-item{grid-template-columns:38px minmax(0,1fr)!important;gap:8px!important;align-items:start;padding:10px 7px;border:1px solid #e0eee8;border-radius:12px;background:#fbfffd;min-width:0}
.sample-info-icon{width:36px!important;height:36px!important;font-size:.82rem!important}
.sample-info-item b{font-size:.82rem!important}.sample-info-item span:last-child{font-size:.78rem;overflow-wrap:anywhere}
.sample-platforms{grid-template-columns:repeat(2,minmax(0,1fr))!important}.sample-platforms a:last-child{grid-column:1/-1}
.user-homepage-article .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;padding:18px 10px 30px}
.user-homepage-article .feature-card{min-height:0;padding:16px 12px;border-radius:16px}.user-homepage-article .feature-card h3{font-size:.88rem!important;gap:7px}.user-homepage-article .feature-card h3:before{flex-basis:32px;width:32px;height:32px;border-radius:10px}.user-homepage-article .feature-card p{font-size:.78rem!important;line-height:1.5!important}
#scrollTopBtn{right:14px;bottom:14px;width:44px;height:44px}
}
/* v8 responsive polish */
.footer-grid>div{min-width:0}.footer-grid a,.site-footer .footer-grid a{display:block!important;width:fit-content;max-width:100%;margin:8px 0!important;line-height:1.45;overflow-wrap:anywhere;word-break:normal}.footer-grid p{line-height:1.7;overflow-wrap:anywhere}
.faq-stack summary,.faq-item summary{position:relative;padding-right:58px!important}.faq-stack summary:after,.faq-item summary:after,.blog-toc summary:after{float:none!important;position:absolute;right:16px;top:50%;transform:translateY(-50%);display:grid!important;place-items:center;width:30px;height:30px;line-height:1!important;text-align:center;border-radius:50%;background:#e4fff3;color:#008d5d!important}
.blog-toc summary{position:relative;padding-right:58px!important}
.old-version-download,.grid .card .cta{display:inline-flex;align-items:center;justify-content:center;min-width:150px;padding:11px 18px;border-radius:12px;background:linear-gradient(135deg,#12c77f,#058b5d);color:#fff!important;font-weight:800;box-shadow:0 8px 20px rgba(0,139,93,.18);margin-top:8px}
@media(max-width:700px){.blog-grid{grid-template-columns:1fr!important;gap:14px}.post-card{padding:18px;border-radius:18px;box-shadow:0 8px 24px rgba(0,70,49,.07)}.post-card h2,.post-card h3{font-size:1.16rem!important;line-height:1.28!important;margin:0 0 10px!important;padding:0!important;background:transparent!important;border:0!important}.post-card p{font-size:.9rem;line-height:1.6;margin:0}.footer-grid{grid-template-columns:1fr!important;gap:24px!important}.footer-grid>div{padding-bottom:4px}.footer-grid h3{margin-bottom:10px}.footer-grid a{margin:7px 0!important}.pagination-links{flex-direction:column}.faq-stack summary,.faq-item summary{font-size:.92rem;line-height:1.4}.blog-toc{border-radius:14px}.blog-toc summary{font-size:.98rem}.grid{grid-template-columns:1fr!important}.grid .card{padding:18px!important}}
/* FAQ accordions generated in guide articles */
main details:not(.blog-toc){position:relative;border:1px solid #d9eee7;border-radius:14px;margin:10px 0;background:#fff;box-shadow:0 5px 18px rgba(0,70,55,.05);overflow:hidden}main details:not(.blog-toc)>summary{position:relative;cursor:pointer;list-style:none;padding:16px 58px 16px 18px;font-weight:750;color:#173b2d}main details:not(.blog-toc)>summary::-webkit-details-marker{display:none}main details:not(.blog-toc)>summary:after{content:'+';position:absolute;right:16px;top:50%;transform:translateY(-50%);width:30px;height:30px;display:grid;place-items:center;border-radius:50%;background:#e4fff3;color:#008d5d;line-height:1;text-align:center;font-size:1.2rem}main details:not(.blog-toc)[open]>summary:after{content:'−'}main details:not(.blog-toc)>p{padding:0 18px 16px;margin:0}
/* v9: contextual homepage-to-blog internal links; no visible content changes */
.contextual-blog-link{color:inherit;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;text-decoration-color:rgba(0,145,96,.45);font-weight:inherit}.contextual-blog-link:hover{color:#008f62;text-decoration-color:currentColor}
/* v11: premium Blog index cards only */
body:has(.blog-grid) .blog-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-top:26px;align-items:stretch}
body:has(.blog-grid) .post-card{position:relative;overflow:hidden;display:flex;flex-direction:column;min-height:220px;padding:26px 24px 23px;border:1px solid #d6e9df;border-radius:22px;background:linear-gradient(150deg,#ffffff 0%,#fbfffd 62%,#effbf5 100%);box-shadow:0 12px 34px rgba(0,61,43,.075);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
body:has(.blog-grid) .post-card:before{content:"GB GUIDE";display:inline-flex;align-items:center;align-self:flex-start;width:max-content;margin-bottom:18px;padding:6px 10px;border-radius:999px;background:#e5f9ef;color:#087c4d;font-size:.67rem;font-weight:800;letter-spacing:.09em;line-height:1}
body:has(.blog-grid) .post-card:after{content:"→";position:absolute;right:20px;bottom:18px;display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:#087f50;color:#fff;font-size:1.15rem;font-weight:700;box-shadow:0 7px 18px rgba(8,127,80,.2);transition:transform .2s ease,background .2s ease}
body:has(.blog-grid) .post-card:hover{transform:translateY(-5px);border-color:#a9ddc4;box-shadow:0 20px 44px rgba(0,61,43,.13)}
body:has(.blog-grid) .post-card:hover:after{transform:translateX(3px);background:#05a864}
body:has(.blog-grid) .post-card h2{margin:0 0 12px!important;padding:0!important;background:transparent!important;font-size:1.14rem;line-height:1.38;letter-spacing:-.015em}
body:has(.blog-grid) .post-card h2 a{color:#102c21;text-decoration:none}
body:has(.blog-grid) .post-card h2 a:after{content:"";position:absolute;inset:0;z-index:2}
body:has(.blog-grid) .post-card p{margin:0;padding:0 46px 0 0!important;background:transparent!important;color:#60736a;font-size:.86rem;line-height:1.65}
@media(max-width:980px){body:has(.blog-grid) .blog-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}}
@media(max-width:700px){body:has(.blog-grid) .blog-grid{grid-template-columns:1fr!important;gap:16px;margin-top:20px}body:has(.blog-grid) .post-card{min-height:0;padding:21px 19px 20px;border-radius:20px;box-shadow:0 9px 26px rgba(0,61,43,.085)}body:has(.blog-grid) .post-card:before{margin-bottom:13px;padding:5px 9px;font-size:.63rem}body:has(.blog-grid) .post-card:after{right:17px;bottom:17px;width:34px;height:34px}body:has(.blog-grid) .post-card h2{font-size:1.08rem!important;line-height:1.36!important;margin-bottom:9px!important}body:has(.blog-grid) .post-card p{padding-right:44px!important;font-size:.86rem;line-height:1.58}}
/* v12 homepage-only brand color update — requested #49BAB9 */
.user-homepage-article a,
.user-homepage-article .sample-intro-copy a,
.user-homepage-article .contextual-blog-link{color:#49BAB9}
.user-homepage-article a:hover,
.user-homepage-article .sample-intro-copy a:hover,
.user-homepage-article .contextual-blog-link:hover{color:#49BAB9}
.user-homepage-article .sample-app-hero{background:#49BAB9}
.user-homepage-article .sample-download,
.user-homepage-article .sample-download.sample-mirror,
.user-homepage-article .sample-platforms a,
.user-homepage-article .sample-info-icon{background:#49BAB9!important;border-color:#49BAB9!important;color:#fff!important}
.user-homepage-article .sample-download:hover,
.user-homepage-article .sample-download.sample-mirror:hover,
.user-homepage-article .sample-platforms a:hover{background:#49BAB9!important;color:#fff!important}
.user-homepage-article .section-title:after{background:#49BAB9}
.user-homepage-article .feature-card h3:before{color:#49BAB9}
.user-homepage-article .faq-stack summary:after,
.user-homepage-article details summary:after{color:#49BAB9!important}
.user-homepage-article .old-version-download,
.user-homepage-article .cta{background:#49BAB9!important;border-color:#49BAB9!important}
/* v14 homepage screenshot gallery: right-to-left autoplay */
.gb-screen-gallery{width:100%;overflow:hidden;margin:0;padding:22px 0 24px;background:#fff;border-top:1px solid rgba(73,186,185,.18);border-bottom:1px solid rgba(73,186,185,.18)}
.gb-screen-gallery-viewport{width:100%;overflow:hidden;-webkit-mask-image:linear-gradient(to right,transparent,#000 4%,#000 96%,transparent);mask-image:linear-gradient(to right,transparent,#000 4%,#000 96%,transparent)}
.gb-screen-gallery-track{display:flex;width:max-content;gap:18px;will-change:transform;animation:gbGalleryRTL 54s linear infinite}
.gb-screen-shot{flex:0 0 230px;height:405px;border-radius:18px;overflow:hidden;background:#f5f8f8;box-shadow:0 8px 24px rgba(0,0,0,.10);border:1px solid rgba(73,186,185,.25)}
.gb-screen-shot img{display:block;width:100%;height:100%;object-fit:cover}
.gb-screen-gallery:hover .gb-screen-gallery-track{animation-play-state:paused}
@keyframes gbGalleryRTL{from{transform:translateX(0)}to{transform:translateX(calc(-50% - 9px))}}
@media(max-width:700px){.gb-screen-gallery{padding:16px 0 18px}.gb-screen-gallery-track{gap:12px;animation-duration:44s}.gb-screen-shot{flex-basis:170px;height:300px;border-radius:14px}}
@media(prefers-reduced-motion:reduce){.gb-screen-gallery-track{animation:none}}
/* v16 homepage contextual images only */
.homepage-topic-image{margin:30px 0 22px;width:100%;overflow:hidden;border-radius:18px;background:#f7ffff;box-shadow:0 10px 30px rgba(0,0,0,.08)}
.homepage-topic-image img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
@media(max-width:700px){.homepage-topic-image{margin:22px 0 18px;border-radius:12px}.homepage-topic-image img{width:100%;height:auto}}
/* v17: preserve the full ultra-wide updated-version banner on desktop and mobile */
.homepage-topic-image.homepage-wide-banner img{width:100%;height:auto;aspect-ratio:auto;object-fit:contain;object-position:center;max-width:100%}
@media(max-width:700px){.homepage-topic-image.homepage-wide-banner img{width:100%;height:auto;aspect-ratio:auto;object-fit:contain}}
/* v18 — Old Versions page row-card layout only */
.old-versions-grid{display:flex!important;flex-direction:column;gap:16px;margin:26px 0 56px}
.old-versions-grid>.card{display:grid!important;grid-template-columns:minmax(190px,.7fr) minmax(0,2fr) auto;grid-template-areas:"title desc button" "title meta button";align-items:center;column-gap:28px;row-gap:7px;padding:22px 24px!important;background:#fff;border:1px solid #d7ebe4;border-radius:18px;box-shadow:0 8px 26px rgba(0,70,55,.07);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;position:relative;overflow:hidden}
.old-versions-grid>.card:before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:#49BAB9}
.old-versions-grid>.card:hover{transform:translateY(-2px);border-color:#a8dddc;box-shadow:0 14px 34px rgba(0,70,55,.11)}
.old-versions-grid>.card h2{grid-area:title;margin:0!important;padding:0!important;background:transparent!important;border:0!important;color:#073d3b;font-size:1.25rem;line-height:1.3}
.old-versions-grid>.card p{margin:0!important;padding:0!important;background:transparent!important;color:#52645e;line-height:1.55}
.old-versions-grid>.card p:first-of-type{grid-area:desc}
.old-versions-grid>.card p:nth-of-type(2){grid-area:meta;font-size:.9rem;color:#334b43}
.old-versions-grid>.card .cta{grid-area:button;margin:0!important;min-width:142px;background:#49BAB9!important;border-radius:999px!important;box-shadow:0 8px 20px rgba(73,186,185,.22)!important;color:#fff!important;white-space:nowrap}
.old-versions-grid>.card .cta:hover{filter:brightness(.92);transform:translateY(-1px)}
@media(max-width:800px){.old-versions-grid{gap:13px;margin-top:20px}.old-versions-grid>.card{grid-template-columns:1fr;grid-template-areas:"title" "desc" "meta" "button";gap:10px;padding:19px 18px 18px 21px!important}.old-versions-grid>.card h2{font-size:1.15rem}.old-versions-grid>.card .cta{width:100%;min-width:0;margin-top:4px!important}}
/* v19 — mobile viewport containment only */
@media(max-width:850px){
html,body{width:100%;max-width:100%;overflow-x:hidden}
.wrap{width:calc(100% - 20px);max-width:100%;margin-left:auto;margin-right:auto}
.nav,.layout,.article-content,.user-homepage-article,
.sample-app-hero,.sample-app-body,.sample-app-left,.sample-app-info,
.sample-main-buttons,.sample-platforms,.sample-info-grid,.sample-info-item,
.sample-intro-copy,.gb-screen-gallery,.gb-screen-gallery-viewport,
.homepage-topic-image{min-width:0;max-width:100%}
.layout{display:grid;grid-template-columns:minmax(0,1fr)}
.article-content,.user-homepage-article{width:100%;overflow-wrap:break-word}
.sample-app-hero{width:100%;overflow:hidden}
.sample-app-hero>h1{width:100%;max-width:100%;font-size:clamp(1.65rem,8vw,2.35rem)!important;overflow-wrap:break-word;word-break:normal}
.sample-app-body{display:block;width:100%}
.sample-app-left,.sample-app-info{width:100%}
.sample-app-info{margin-top:30px}
img,video,iframe,svg{max-width:100%;height:auto}
.article-content table{max-width:calc(100% - clamp(44px,8vw,88px))}
}
@media(max-width:560px){
.sample-app-body{padding:22px 16px}
.sample-main-buttons{grid-template-columns:minmax(0,1fr)}
.sample-platforms,.sample-info-grid{width:100%}
.sample-platforms a,.sample-download,.sample-info-item{min-width:0;max-width:100%}
.sample-info-item span:last-child{min-width:0;overflow-wrap:anywhere}
}