:root{--navy:#12305a;--navy-2:#0b2344;--orange:#ff7a33;--green:#29b270;--blue:#4498e6;--ink:#1d2939;--muted:#66758a;--line:#dbe5f1;--soft:#f5f8fc;--white:#fff;--shadow:0 18px 45px rgba(18,48,90,.10);--radius:22px;--header-h:78px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:96px}body{margin:0;font-family:"Poppins",Poppins,Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.65;-webkit-font-smoothing:antialiased}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button{cursor:pointer}p{margin:0 0 1rem}h1,h2,h3{line-height:1.15;color:var(--navy-2);margin:0 0 1rem}h1{font-size:clamp(2.35rem,5vw,4.7rem);letter-spacing:-.045em}h2{font-size:clamp(1.8rem,3.2vw,3rem);letter-spacing:-.03em}h3{font-size:1.18rem}.container{width:min(1160px,calc(100% - 40px));margin:auto}.section{padding:88px 0}.section-soft{background:var(--soft)}.section-kicker{display:inline-flex;align-items:center;gap:8px;font-size:.79rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--orange);margin-bottom:12px}.section-kicker:before{content:"";width:24px;height:2px;background:currentColor}.section-head{max-width:760px;margin-bottom:36px}.section-head.center{text-align:center;margin-left:auto;margin-right:auto}.section-head.center .section-kicker:before{display:none}.section-head p{color:var(--muted);font-size:1.03rem}.skip-link{position:fixed;left:12px;top:-80px;background:var(--navy);color:#fff;padding:10px 16px;z-index:2000;border-radius:8px}.skip-link:focus{top:12px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:13px 20px;border-radius:12px;font-weight:700;border:1px solid transparent;transition:.2s ease}.btn-primary{background:var(--orange);color:#fff;box-shadow:0 10px 24px rgba(255,122,51,.24)}.btn-primary:hover{transform:translateY(-1px);background:#ee6822}.btn-secondary{background:#fff;color:var(--navy);border-color:var(--line)}.btn-secondary:hover{border-color:#aebed1}.btn-small{padding:10px 15px;font-size:.9rem}.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:.2s}.site-header.is-scrolled{border-color:var(--line);box-shadow:0 8px 25px rgba(18,48,90,.08)}.nav-wrap{min-height:var(--header-h);display:flex;align-items:center;gap:28px}.brand img{width:220px;height:auto}.main-nav{margin-left:auto;display:flex;align-items:center;gap:22px}.main-nav a{font-size:.91rem;font-weight:600;color:#44536a;position:relative}.main-nav a:not(.nav-download):after{content:"";position:absolute;height:2px;background:var(--orange);left:0;right:100%;bottom:-8px;transition:.2s}.main-nav a:hover:after,.main-nav 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var(--line)}.floating-proof{position:absolute;right:-12px;bottom:22px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);padding:13px 16px;border-radius:14px;font-size:.86rem;font-weight:700;color:var(--navy)}.about-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:52px;align-items:center}.about-visual img{border-radius:22px;border:1px solid var(--line)}.fact-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}.fact{border-left:3px solid var(--orange);padding:11px 14px;background:var(--soft);border-radius:0 12px 12px 0}.fact strong{display:block;color:var(--navy)}.feature-band{background:var(--navy-2);color:#fff}.feature-band h2,.feature-band h3{color:#fff}.feature-band .section-head p{color:#c7d4e7}.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.feature-card{background:rgba(255,255,255,.07);border:1px solid 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var(--line);border-radius:var(--radius);background:#fff;padding:28px}.compat-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:20px}.compat-item{padding:16px;border-radius:14px;background:var(--soft);font-weight:700;color:var(--navy)}.mini-note{border-radius:18px;padding:24px;background:#fff8f3;border:1px solid #ffd7c0}.use-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.use-card{padding:24px;border:1px solid var(--line);border-radius:18px}.use-card span{display:inline-block;font-size:.78rem;font-weight:800;color:var(--green);background:#eaf8f1;padding:6px 9px;border-radius:999px;margin-bottom:13px}.setup-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.checklist{list-style:none;padding:0;margin:0}.checklist li{position:relative;padding:10px 0 10px 30px;border-bottom:1px solid var(--line)}.checklist li:before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:900}.download-panel{display:grid;grid-template-columns:1fr .85fr;gap:34px;align-items:center;background:linear-gradient(135deg,var(--navy-2),#1b4a80);border-radius:28px;padding:42px;color:#fff;box-shadow:var(--shadow)}.download-panel h2{color:#fff}.download-panel p{color:#cfdaea}.download-panel img{border-radius:20px;border:1px solid rgba(255,255,255,.17)}.download-meta{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0 24px}.download-meta span{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.14);padding:8px 11px;border-radius:999px;font-size:.82rem}.safety-box{border:1px solid #bce9d2;background:#effaf5;border-radius:22px;padding:28px;display:grid;grid-template-columns:58px 1fr;gap:18px}.safety-icon{width:52px;height:52px;background:var(--green);color:#fff;border-radius:16px;display:grid;place-items:center;font-size:1.4rem}.proscons{display:grid;grid-template-columns:1fr 1fr;gap:20px}.pc-card{border:1px solid var(--line);border-radius:20px;padding:27px}.pc-card.pro{border-top:4px solid var(--green)}.pc-card.con{border-top:4px solid var(--orange)}.release-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.release-stat{padding:22px;border:1px solid var(--line);border-radius:16px;text-align:center}.release-stat strong{display:block;color:var(--navy);font-size:1.1rem}.release-stat span{color:var(--muted);font-size:.85rem}.trouble-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.trouble-card{border:1px solid var(--line);border-radius:18px;padding:22px}.trouble-card b{color:var(--navy)}.guides-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.guide-card{border:1px solid var(--line);border-radius:20px;overflow:hidden;background:#fff;transition:.2s}.guide-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.guide-card img{aspect-ratio:16/9;object-fit:cover}.guide-card .body{padding:20px}.guide-card p{color:var(--muted);font-size:.92rem}.text-link{color:var(--navy);font-weight:800}.faq-shell{display:grid;grid-template-columns:220px 1fr;gap:28px}.faq-jump{position:sticky;top:110px;display:grid;gap:10px;align-self:start}.faq-jump button{border:1px solid var(--line);background:#fff;text-align:left;padding:14px;border-radius:12px;font-weight:700;color:var(--navy)}.faq-jump button:hover{border-color:var(--orange)}.faq-group{border:1px solid var(--line);border-radius:22px;padding:24px;background:#fff}.faq-group+.faq-group{margin-top:22px}.faq-group-title{display:flex;align-items:center;gap:12px;margin-bottom:16px}.faq-group-title span{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:#fff2ea;color:var(--orange);font-weight:800}.faq-item{border-top:1px solid var(--line)}.faq-item:first-of-type{border-top:0}.faq-question{width:100%;border:0;background:transparent;padding:17px 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310px;gap:36px}.article-main{min-width:0}.article-main>img.feature{border-radius:22px;border:1px solid var(--line);margin-bottom:28px}.article-main h2{margin-top:34px;font-size:1.7rem}.article-main h3{margin-top:25px}.article-main p,.article-main li{color:#42526a}.article-main ul{padding-left:22px}.sidebar{position:sticky;top:108px;align-self:start;display:grid;gap:16px}.side-card{border:1px solid var(--line);border-radius:18px;padding:20px;background:#fff}.side-card ul{list-style:none;margin:0;padding:0}.side-card li+li{border-top:1px solid var(--line)}.side-card a{display:block;padding:10px 0;color:var(--navy);font-weight:650}.notice{border-left:4px solid var(--orange);background:#fff7f2;padding:18px;border-radius:0 14px 14px 0;margin:24px 0}.related{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}.related a{border:1px solid 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img{width:230px;background:transparent;border-radius:0;padding:0;margin-bottom:18px}.footer-brand p{max-width:440px;color:#aebed1}.footer-col h3{color:#fff;font-size:1rem}.footer-links{list-style:none;margin:0;padding:0}.footer-links li+li{margin-top:8px}.footer-links a{color:#c8d4e4;text-decoration:none}.footer-links a:hover{color:#fff}.footer-email{color:#c8d4e4}.footer-bottom{border-top:1px solid rgba(255,255,255,.11);padding:20px 0 26px;text-align:center}.copyright{margin:0;color:#c8d4e4;font-size:.9rem}.copyright a{color:#fff}.footer-disclaimer{margin:7px 0 0;color:#92a5bd;font-size:.82rem;text-align:center}.scroll-top{position:fixed;right:18px;bottom:18px;width:44px;height:44px;border:0;border-radius:12px;background:var(--navy);color:#fff;box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(8px);transition:.2s;z-index:999}.scroll-top.show{opacity:1;visibility:visible;transform:none}.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}.reveal.is-visible{opacity:1;transform:none}
@media(max-width:980px){.main-nav{position:fixed;left:20px;right:20px;top:72px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:18px;display:none;flex-direction:column;align-items:stretch;gap:5px}.main-nav.is-open{display:flex}.main-nav a{padding:10px}.nav-download{text-align:center}.menu-toggle{display:block}.hero-grid,.about-grid,.compat-grid,.download-panel,.content-layout{grid-template-columns:1fr}.feature-grid{grid-template-columns:repeat(2,1fr)}.steps-shell{grid-template-columns:1fr}.steps-intro,.sidebar{position:static}.use-grid,.guides-grid,.blog-grid{grid-template-columns:repeat(2,1fr)}.release-grid{grid-template-columns:repeat(2,1fr)}.footer-top{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.faq-shell{grid-template-columns:1fr}.faq-jump{position:static;grid-template-columns:1fr 1fr}.hero-visual{max-width:760px}.floating-proof{right:12px}}
@media(max-width:680px){:root{--header-h:68px}.container{width:min(100% - 28px,1160px)}.section{padding:68px 0}.brand img{width:178px}.hero{padding:54px 0}.hero-grid{gap:34px}.hero-actions{display:grid}.btn{width:100%}.fact-list,.feature-grid,.use-grid,.setup-grid,.proscons,.trouble-grid,.guides-grid,.release-grid,.blog-grid,.contact-method,.footer-top,.compat-list,.related{grid-template-columns:1fr}.download-panel{padding:26px}.safety-box{grid-template-columns:1fr}.step{grid-template-columns:44px 1fr}.faq-group{padding:18px}.faq-jump{grid-template-columns:1fr}.footer-brand{grid-column:auto}.footer-top{gap:28px}.floating-proof{position:static;margin-top:12px;text-align:center}.page-hero{padding:46px 0 34px}.content-layout{gap:26px}.article-main h2{font-size:1.5rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}.btn,.guide-card,.scroll-top{transition:none}}