:root{font-family:Inter,Segoe UI,Arial,sans-serif;color:#242735;background:#faf9f6;font-synthesis:none;--accent:#d44b28;--muted:#626675;--line:#dededc;--panel:#fff;--ink:#242735;--head:rgba(250,249,246,.97)}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0}a{color:inherit;text-underline-offset:4px}button{font:inherit;cursor:pointer}button,a,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #ef8c47;outline-offset:5px}.wrap{max-width:1240px;width:calc(100% - 96px);margin:auto}.skip{position:fixed;top:-100px;z-index:100;padding:14px;background:var(--panel)}.skip:focus{top:0}header{position:sticky;top:0;background:var(--head);border-bottom:1px solid var(--line);z-index:20;backdrop-filter:blur(16px)}.header-inner{height:84px;display:flex;align-items:center;gap:36px}.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-size:27px;font-weight:780;letter-spacing:-1px}.brand img{object-fit:contain}.desktop-nav{margin-left:auto;display:flex;align-items:center;gap:26px;font-size:14px;font-weight:600}.desktop-nav a{text-decoration:none}.desktop-nav a:hover{color:var(--accent)}.download{display:inline-flex;justify-content:center;align-items:center;gap:14px;border:0;border-radius:8px;padding:19px 23px;background:var(--accent);color:white;font-weight:700;min-height:54px;transition:background .2s,transform .2s;white-space:nowrap;text-decoration:none}.download:hover{background:#b83d1e;transform:translateY(-2px)}.download svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.7}.download span{margin-left:20px}.header-inner>.download{padding:13px 18px;font-size:13px;min-height:44px}.header-inner>.download span{display:none}.menu-toggle{display:none}.progress{height:2px;position:absolute;bottom:-1px;left:0;width:0;background:var(--accent)}.hero{display:grid;grid-template-columns:1.35fr 1fr;gap:90px;padding-top:78px;padding-bottom:78px;align-items:center}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:750;display:flex;gap:10px;align-items:center;color:var(--muted)}.eyebrow i{width:7px;height:7px;background:var(--accent);border-radius:50%}h1{font-size:clamp(36px,3.8vw,54px);line-height:1.12;letter-spacing:-2px;font-weight:750;margin:24px 0}.hero-copy{display:flex;flex-direction:column}.intro{order:1}.intro p{font-size:16px;line-height:1.75;color:var(--muted);margin:0 0 14px}.hero-action{order:2;margin-top:16px}.app-card{background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:0 24px 60px #25252508;overflow:hidden;position:relative}.app-identity{display:flex;gap:22px;align-items:center;padding:30px;background:linear-gradient(120deg,#fff4e8,#faf7ff)}.app-identity img{width:90px;height:90px;object-fit:contain}.app-identity strong{font-size:36px;letter-spacing:-1px}.app-identity span{display:block;color:var(--muted);font-size:13px;margin-top:5px}.app-table{padding:10px 26px}table{border-collapse:collapse;width:100%;font-size:13px;line-height:1.5}td,th{padding:12px 0;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}th{font-size:11px;text-transform:uppercase;letter-spacing:1px;color:var(--muted)}td:first-child{color:var(--muted);width:48%;padding-right:16px}td:last-child{font-weight:600}tr:last-child td{border:0}.card-note{display:block;padding:13px 26px;border-top:1px solid var(--line);font-size:11px;letter-spacing:.7px;color:var(--muted)}.reading{display:grid;grid-template-columns:250px minmax(0,1fr);gap:72px;border-top:1px solid var(--line);padding-top:56px;padding-bottom:90px}aside{position:relative}.toc{position:sticky;top:115px}.toc summary{font-size:13px;font-weight:750;padding-bottom:20px;list-style:none;cursor:pointer}.toc summary span{float:right;color:var(--accent)}.toc nav{display:grid;gap:0;max-height:calc(100vh - 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.design-b{--accent:#ff6a32;--ink:#f5f3f0;--muted:#b7b7c5;--line:#333440;--panel:#1c1d28;--head:rgba(17,18,26,.97);background:#11121a;color:#f5f3f0}.design-b .hero{grid-template-columns:1fr;gap:40px;max-width:1080px;padding-top:70px;padding-bottom:60px}.design-b .hero-copy{max-width:900px;margin:auto;text-align:center;align-items:center}.design-b h1{font-size:62px;max-width:900px}.design-b .intro{max-width:800px}.design-b .hero-action{order:0;margin:0 0 25px}.design-b .intro{order:1}.design-b .app-card{display:grid;grid-template-columns:235px 1fr;border-radius:0;box-shadow:none;background:transparent;border-left:0;border-right:0}.design-b .app-identity{background:transparent;padding:24px 0;border-right:1px solid var(--line);gap:14px}.design-b .app-identity img{width:64px;height:64px}.design-b .app-identity strong{font-size:30px}.design-b .app-table{padding:14px 30px}.design-b .app-table table tbody{display:grid;grid-template-columns:repeat(3,1fr);gap:0 24px}.design-b .app-table tr{display:flex;flex-direction:column;justify-content:flex-start;min-width:0}.design-b .app-table tr:first-child{display:none}.design-b .app-table td{border:0;width:auto;padding:5px 0;font-size:12px}.design-b .app-table td:first-child{font-size:10px}.design-b .card-note{display:none}.design-b .reading{display:block;max-width:1080px;border:0;padding-top:0}.design-b aside{margin-bottom:60px}.design-b .toc{position:static;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:22px 0}.design-b .toc summary{padding-bottom:10px}.design-b .toc nav{display:flex;flex-wrap:wrap;max-height:none;gap:8px}.design-b .toc a{border:1px solid var(--line);padding:8px 12px}.design-b article{max-width:850px;margin:auto}.design-b h2{font-size:36px}.design-b footer{background:#191a24}.design-b .section-top{display:flex;gap:20px;align-items:baseline}.design-b .section-line{flex:none;width:24px}.design-b .download{color:#11121a}.design-b .download:hover{background:#ff895d}.design-b .faq h3{color:#f5f3f0}
@media(min-width:851px) and (max-width:1100px){.hero{gap:35px}.wrap{width:calc(100% - 64px)}.desktop-nav{gap:16px}.header-inner{gap:22px}.reading{gap:40px;grid-template-columns:210px minmax(0,1fr)}}
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@media(max-width:360px){.wrap{width:calc(100% - 32px)}.header-inner{gap:8px}.header-inner>.download svg{display:none}.header-inner>.download{font-size:10px;padding:10px}h1,.design-b h1{font-size:30px}.eyebrow{font-size:8px}.app-table{padding:8px 16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}
.design-b .intro{text-align:left}
.footer-items a{text-decoration:none}.footer-items a:hover,.footer-items a[aria-current]{color:var(--accent)}
.design-b .inner-reading{display:grid;grid-template-columns:230px minmax(0,1fr);gap:65px;max-width:1120px;padding-top:0}
.design-b .inner-reading aside{margin-bottom:0}.design-b .inner-reading .toc{position:sticky;top:110px;border:0;padding:0}
.design-b .inner-reading .toc nav{display:grid;gap:0;max-height:calc(100vh - 175px);overflow:auto}
.design-b .inner-reading .toc a{border:0;border-left:2px solid var(--line);padding:10px 14px}
.design-b .inner-reading .toc a.active{border-color:var(--accent)}
.page-heading{max-width:1120px;padding:35px 0 50px}.breadcrumb{display:flex;gap:14px;align-items:center;font-size:12px;color:var(--muted);margin-bottom:45px}.breadcrumb a{text-decoration:none}.page-heading .eyebrow{margin-bottom:22px}
.design-b .page-heading h1{font-size:clamp(36px,4.5vw,56px);max-width:870px;margin-bottom:0}.inner-reading .page-intro{margin:0 0 42px}.inner-reading .page-intro p:first-child:not(.updated){font-size:18px;color:#e1dfdf}.inner-reading .updated{font-size:12px;letter-spacing:.3px;color:var(--accent)}
.design-b .inner-reading h2{font-size:29px}.inner-reading .section-top{gap:14px}.inner-reading article{min-width:0;width:100%}.inner-reading a{color:#ff976e;overflow-wrap:anywhere}.inner-reading .section{padding-bottom:25px;margin-bottom:35px}.inner-reading .section-line{width:17px}
.error-page{text-align:center;max-width:760px;padding:65px 0 100px;min-height:65vh}.error-number{display:block;color:var(--accent);font-size:clamp(90px,20vw,180px);font-weight:800;line-height:1}.design-b .error-page h1{font-size:36px;letter-spacing:-1px}.error-page p{color:var(--muted);line-height:1.8}.error-page>a{display:inline-flex;color:var(--accent);margin-top:20px}
article ol{padding-left:25px;margin:20px 0}article ol li{padding-left:10px}article ol li::marker{font-weight:700}article a{color:#ff976e}
@media(max-width:850px){.design-b .inner-reading{display:grid;grid-template-columns:1fr;gap:30px}.design-b .inner-reading .toc{position:static;border:1px solid var(--line);padding:17px}.design-b .inner-reading .toc nav{max-height:none}.page-heading{padding-top:24px;padding-bottom:30px}.breadcrumb{font-size:11px;gap:10px;margin-bottom:26px;flex-wrap:wrap}.page-heading .eyebrow{margin-bottom:12px}.design-b .page-heading h1{font-size:34px;line-height:1.2}.inner-reading .page-intro p:first-child:not(.updated){font-size:16px}.design-b .inner-reading h2{font-size:25px}.design-b .inner-reading .section-line{width:12px}.inner-reading .section-top{gap:10px}.error-page{padding-top:60px}.design-b .error-page h1{font-size:30px}.inner-reading .page-intro{margin-bottom:30px}}
.inner-reading article a{display:inline-block;max-width:100%}
.section,h3{scroll-margin-top:0}
/* Collapsible page contents: consistent rows and readable link columns. */
.design-b .toc,.design-b .inner-reading .toc{padding:0;border:1px solid var(--line);border-radius:10px;background:var(--panel);overflow:hidden}
.design-b .toc summary{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:58px;padding:17px 22px;font-size:14px;line-height:1.5}
.toc summary::-webkit-details-marker{display:none}
.toc-chevron{width:20px;height:20px;flex:none;fill:none;stroke:var(--accent);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s}
.toc[open] .toc-chevron{transform:rotate(180deg)}
.design-b .toc[open] summary{border-bottom:1px solid var(--line)}
.design-b .toc nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch;gap:10px;padding:16px;max-height:none}
.design-b .toc a{display:flex;align-items:center;min-width:0;min-height:48px;padding:12px 15px;border:1px solid var(--line);border-radius:6px;font-size:13px;line-height:1.55;text-align:left;overflow-wrap:break-word}
.design-b .toc a:hover{color:var(--ink);border-color:var(--accent);background:#ff6a3208}
.design-b .toc a.active{border-color:var(--accent);background:#ff6a3210}
.design-b .inner-reading .toc nav{grid-template-columns:1fr;gap:8px;padding:12px;max-height:calc(100vh - 205px);overflow-y:auto}
.design-b .inner-reading .toc summary{padding:16px;gap:12px}
.design-b .inner-reading .toc a{border:1px solid var(--line);padding:10px 12px;font-size:12px;min-height:44px}
@media(max-width:850px){.design-b .toc nav,.design-b .inner-reading .toc nav{grid-template-columns:1fr;gap:8px;padding:12px;max-height:none}.design-b .toc summary,.design-b .inner-reading .toc summary{min-height:54px;padding:15px 16px}.design-b .toc a,.design-b .inner-reading .toc a{font-size:13px;padding:12px;min-height:46px}}
.design-b .hero{gap:32px}
.design-b .hero-copy>.hero-action{margin-bottom:0}
.design-b .hero>.intro{order:0;width:100%;max-width:800px;margin:0 auto;text-align:left}
.design-b .hero>.intro p:last-child{margin-bottom:0}
@media(max-width:850px){.design-b .hero{gap:26px}}
footer .copyright{display:block;width:100%;padding-top:20px;border-top:1px solid var(--line);font-size:12px;line-height:1.7}
@media(min-width:851px) and (max-width:1050px){.header-inner{gap:22px}.desktop-nav{gap:16px;font-size:13px}}
@media(max-width:850px){#mobile-nav a{padding:6px 0}#mobile-nav{gap:7px}}
.back-top{z-index:30;display:inline-flex;align-items:center;justify-content:center;gap:10px;width:auto;min-width:54px;height:54px;padding:0 18px;border:2px solid #ff986e;border-radius:28px;background:var(--accent);color:#11121a;font-size:13px;font-weight:750;line-height:1;box-shadow:0 8px 26px #0008,0 0 0 4px #11121acc;bottom:max(24px,calc(env(safe-area-inset-bottom) + 12px));transition:opacity .2s,background .2s,transform .2s}
.back-top svg{width:24px;height:24px;flex:none;fill:none;stroke:currentColor;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}
.back-top:hover{background:#ff925f;transform:translateY(-3px)}
.back-top:focus-visible{outline:3px solid #fff;outline-offset:5px}
@media(max-width:850px){.back-top{width:56px;min-width:56px;height:56px;padding:0;right:16px;bottom:max(18px,calc(env(safe-area-inset-bottom) + 12px))}.back-top svg{width:27px;height:27px}.back-top span{display:none}}
@media(max-width:850px){footer{padding-bottom:96px}}

.design-b .security-tools{max-width:1080px;margin-bottom:36px;padding:26px 24px 20px;border:1px solid var(--line);border-radius:10px;background:var(--panel);text-align:center}
.security-tools>#safety-check-title{margin:0;font-size:22px;font-weight:750;line-height:1.4;letter-spacing:-.3px}

.security-badges{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));list-style:none;margin:0 auto;padding:0;max-width:780px}
.security-badges>li{min-width:0;padding:0;margin:0}
.security-badges>li+li{border-left:1px solid var(--line)}
.security-badges a{display:flex;flex-direction:column;align-items:center;gap:9px;padding:8px 15px 14px;min-width:0;border-radius:6px;text-decoration:none;transition:background .2s}
.security-badges a:hover{background:#ffffff06}
.security-badges img{display:block;object-fit:contain;width:62px;height:62px;margin-bottom:3px}
.security-badges strong{font-size:15px;line-height:1.4;font-weight:650}


@media(max-width:700px){.design-b .security-tools{padding:21px 12px 17px;margin-bottom:28px}.security-tools>#safety-check-title{font-size:19px}.security-badges a{padding:5px 7px 10px;gap:8px}.security-badges img{width:43px;height:48px}.security-badges strong{font-size:12px}}
@media(max-width:360px){.security-badges a{padding-left:4px;padding-right:4px}.security-badges strong{font-size:11px}}

.security-badges a{height:100%}
@media(max-width:700px){.security-badges strong{display:flex;align-items:center;justify-content:center;min-height:34px}}

.security-tools>#safety-check-title{margin-bottom:24px}@media(max-width:700px){.security-tools>#safety-check-title{margin-bottom:20px}}
.security-tools>#safety-check-title{font-size:28px;line-height:1.3;letter-spacing:-.5px;margin-bottom:28px}
.security-badges img{width:68px;height:68px}
.security-badges strong{font-weight:600}
@media(max-width:700px){.security-tools>#safety-check-title{font-size:22px;letter-spacing:-.3px;margin-bottom:24px}.security-badges img{width:48px;height:52px}}

/* Homepage introduction follows the security tools and precedes the contents. */
.design-b .home-intro{margin:0 auto 36px;text-align:left}.design-b .home-intro p:last-child{margin-bottom:0}
@media(max-width:700px){.design-b .home-intro{margin-bottom:28px}}

.download .android-mark{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;margin-left:0;flex:0 0 24px}.download .android-mark svg{display:block;width:24px;height:24px;fill:none;stroke:none}.download .android-mark .android-antennae{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}.download .android-mark .android-head{fill:currentColor;stroke:none}.hero-action .download>svg{width:24px;height:24px;flex:0 0 24px}.header-inner>.download .android-mark{display:none}

/* Progress updates only composite a transform, without changing layout width. */
.progress{width:100%;transform:scaleX(0);transform-origin:left center}