*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Poppins,"Segoe UI",Arial,sans-serif;color:#172033;background:#f8fbff;line-height:1.7;-webkit-font-smoothing:antialiased}img{max-width:100%;height:auto;display:block}a{color:#1d4ed8;text-decoration:none}a:hover{color:#163ba7}button,input,textarea{font:inherit}.container{width:min(1120px,calc(100% - 40px));margin-inline:auto}.site-header{position:sticky;top:0;z-index:1000;background:rgba(248,251,255,.96);border-bottom:1px solid transparent;backdrop-filter:blur(14px);transition:.2s}.site-header.scrolled{border-color:#dce6f4;box-shadow:0 8px 28px rgba(30,64,175,.08)}.header-shell{min-height:76px;display:flex;align-items:center;gap:28px}.brand{display:inline-flex;align-items:center;gap:10px;color:#14213a;font-weight:800;letter-spacing:-.02em;white-space:nowrap}.brand img{width:46px;height:46px;object-fit:contain}.primary-nav{margin-left:auto;display:flex;align-items:center;gap:4px}.primary-nav>a:not(.btn){padding:10px 9px;border-radius:10px;color:#43516b;font-size:.91rem;font-weight:600}.primary-nav>a.active:not(.btn),.primary-nav>a:not(.btn):hover{background:#edf4ff;color:#1d4ed8}.menu-toggle{display:none;margin-left:auto;background:#fff;border:1px solid #d7e2f2;border-radius:12px;width:46px;height:46px;padding:11px}.menu-toggle span{display:block;height:2px;background:#1e293b;margin:5px 0}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 20px;border:1px solid #2563eb;border-radius:12px;background:#2563eb;color:#fff;font-weight:800;box-shadow:0 9px 20px rgba(37,99,235,.15);transition:transform .2s,box-shadow .2s,background .2s}.btn:hover{color:#fff;background:#1d4ed8;transform:translateY(-2px);box-shadow:0 12px 25px rgba(37,99,235,.22)}.btn-secondary{background:#fff;color:#1d4ed8;border-color:#cad8ee;box-shadow:none}.btn-secondary:hover{color:#1d4ed8;background:#f1f6ff}.btn-small{min-height:42px;padding:9px 16px;font-size:.9rem}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:#0f766e;background:#e7f8f5;border:1px solid #c8eee8;border-radius:999px;padding:6px 12px;font-size:.78rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.section{padding:88px 0}.section-tight{padding:64px 0}.section-head{max-width:720px;margin:0 auto 34px;text-align:center}.section-head.left{margin-left:0;text-align:left}.section-head h2,.page-hero h1{margin:.3em 0 .35em;line-height:1.12;letter-spacing:-.035em;color:#111c33}.section-head h2{font-size:clamp(2rem,4vw,3rem)}.section-head p,.muted{color:#62708a}.hero{padding:74px 0 58px;overflow:hidden}.hero-card{background:#fff;border:1px solid #dce6f4;border-radius:26px;padding:46px;box-shadow:0 18px 55px rgba(41,75,130,.08);text-align:center;max-width:1040px;margin-inline:auto}.hero-card>div:first-child{max-width:820px;margin-inline:auto}.hero h1{font-size:clamp(2.7rem,5.7vw,5.1rem);line-height:.98;letter-spacing:-.06em;margin:18px 0 20px;color:#101b32}.hero h1 span{color:#2563eb}.hero p{font-size:1.07rem;color:#5e6c86;max-width:700px;margin-inline:auto}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:27px 0;justify-content:center}.hero-meta{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.meta-pill{font-size:.84rem;color:#40506b;background:#f4f7fb;border:1px solid #dce6f4;border-radius:999px;padding:7px 11px;font-weight:700}.hero-visual{background:#f5f9ff;border:1px solid #dce6f4;border-radius:22px;padding:14px;margin:30px auto 0;max-width:860px}.hero-visual img{width:100%;max-height:430px;object-fit:contain}.about-layout{display:grid;grid-template-columns:.88fr 1.12fr;gap:44px;align-items:center}.visual-frame{background:#fff;border:1px solid #dce6f4;border-radius:22px;padding:16px;box-shadow:0 15px 40px rgba(41,75,130,.06)}.visual-frame img{width:100%;max-height:430px;object-fit:contain}.check-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}.check-list div{background:#fff;border:1px solid #dce6f4;border-radius:14px;padding:12px 14px;font-weight:700;color:#34435d}.check-list div:before{content:"✓";color:#0f766e;margin-right:9px}.features-wrap{border-top:1px solid #dce6f4;border-bottom:1px solid #dce6f4;background:#fbfdff}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{background:#fff;border:1px solid #dce6f4;border-radius:18px;padding:24px;box-shadow:0 7px 18px rgba(30,64,175,.035)}.card-icon{width:42px;height:42px;border-radius:12px;background:#edf4ff;border:1px solid #d7e5fa;display:grid;place-items:center;color:#2563eb;font-weight:900;margin-bottom:16px}.card h3{margin:0 0 8px;color:#18253d}.card p{margin:0;color:#65728a}.how-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid #dce6f4;border-radius:20px;overflow:hidden;background:#fff}.step{padding:27px;border-right:1px solid #dce6f4}.step:last-child{border-right:0}.step-num{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:#2563eb;color:#fff;font-weight:800;margin-bottom:16px}.step h3{margin:0 0 7px}.step p{margin:0;color:#67758d}.soft-band{background:#f0f6ff;border-block:1px solid #dbe7f7}.compat-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:18px}.compat-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.compat-item{background:#fff;border:1px solid #d7e2f2;border-radius:14px;padding:18px}.compat-item strong{display:block;margin-bottom:5px}.use-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.installation{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px}.install-steps{counter-reset:setup}.install-steps li{list-style:none;counter-increment:setup;position:relative;padding:16px 16px 16px 56px;background:#fff;border:1px solid #dce6f4;border-radius:14px;margin:0 0 10px}.install-steps li:before{content:counter(setup);position:absolute;left:15px;top:14px;width:29px;height:29px;border-radius:9px;background:#eaf2ff;color:#1d4ed8;font-weight:900;display:grid;place-items:center}.download-box{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center;background:#13223d;border-radius:26px;padding:42px;color:#fff;overflow:hidden}.download-box h2{color:#fff;font-size:clamp(2rem,4vw,3.25rem);line-height:1.05;margin:10px 0 14px}.download-box p{color:#cbd7e8}.download-box .eyebrow{background:#173b49;color:#89e7d8;border-color:#275566}.download-box .btn{background:#fff;color:#173b7a;border-color:#fff}.download-box .btn:hover{background:#edf4ff;color:#173b7a}.download-box img{width:100%;max-height:340px;object-fit:contain;border-radius:18px}.notice{display:flex;gap:18px;background:#fffaf0;border:1px solid #f1dfb6;border-radius:18px;padding:22px}.notice-mark{flex:0 0 44px;width:44px;height:44px;border-radius:12px;background:#fff2c9;display:grid;place-items:center;font-weight:900;color:#9a6700}.split-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px}.pros li::marker{color:#0f766e}.cons li::marker{color:#b45309}.release-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:15px}.release-grid .card strong{display:block;font-size:1.35rem;color:#1d4ed8}.trouble-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.guide-card{background:#fff;border:1px solid #dce6f4;border-radius:18px;overflow:hidden}.guide-card img{aspect-ratio:16/9;width:100%;object-fit:contain;background:#f7faff;border-bottom:1px solid #dce6f4}.guide-card-body{padding:20px}.guide-card h3{margin:0 0 8px}.guide-card p{color:#65728a}.text-link{font-weight:800;color:#1d4ed8}.faq-section{background:#fff;border-top:1px solid #dce6f4}.faq-tabs{display:flex;justify-content:center;gap:10px;margin:0 0 24px}.faq-tab{border:1px solid #d7e2f2;background:#f7faff;color:#465571;border-radius:12px;padding:10px 16px;font-weight:800;cursor:pointer}.faq-tab.active{background:#2563eb;color:#fff;border-color:#2563eb}.faq-panel{max-width:900px;margin:0 auto}.faq-item{border:1px solid #dce6f4;border-radius:14px;background:#fbfdff;margin-bottom:10px;overflow:hidden}.faq-button{width:100%;display:flex;justify-content:space-between;gap:16px;text-align:left;padding:18px 20px;background:transparent;border:0;color:#1b2940;font-weight:800;cursor:pointer}.faq-button:after{content:"+";font-size:1.35rem;color:#2563eb}.faq-button[aria-expanded="true"]:after{content:"−"}.faq-answer{padding:0 20px 18px;color:#647188}.faq-answer p{margin:0}.page-hero{padding:68px 0 44px;text-align:center}.page-hero h1{font-size:clamp(2.5rem,5vw,4.3rem);max-width:900px;margin-inline:auto}.page-hero p{max-width:760px;margin:0 auto;color:#647188}.page-visual{max-width:880px;margin:30px auto 0;background:#fff;border:1px solid #dce6f4;border-radius:20px;padding:12px}.page-visual img{width:100%;max-height:400px;object-fit:contain}.content-shell{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;align-items:start}.article{background:#fff;border:1px solid #dce6f4;border-radius:20px;padding:34px}.article h2{margin-top:1.5em;line-height:1.2;color:#17233b}.article h3{line-height:1.25}.article p,.article li{color:#596983}.article a{font-weight:700}.sidebar{position:sticky;top:96px}.side-card{background:#fff;border:1px solid #dce6f4;border-radius:18px;padding:20px;margin-bottom:14px}.side-card h3{margin:0 0 12px}.side-card a{display:block;padding:7px 0;color:#53627b;font-weight:700}.breadcrumb{font-size:.86rem;color:#6b7890;margin-bottom:16px}.breadcrumb a{color:#1d4ed8}.blog-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.blog-card{background:#fff;border:1px solid #dce6f4;border-radius:18px;overflow:hidden;display:flex;flex-direction:column}.blog-card img{width:100%;aspect-ratio:16/9;object-fit:contain;background:#f6faff;border-bottom:1px solid #dce6f4}.blog-card-body{padding:21px;display:flex;flex-direction:column;flex:1}.blog-card h2{font-size:1.22rem;line-height:1.3;margin:0 0 8px}.blog-card p{color:#63718a;margin:0 0 15px}.blog-card .text-link{margin-top:auto}.legal-card{max-width:900px;margin:0 auto;background:#fff;border:1px solid #dce6f4;border-radius:20px;padding:38px}.legal-card h2{margin-top:1.5em}.contact-list{display:grid;grid-template-columns:repeat(2,1fr);gap:15px;margin-top:26px}.contact-item{border:1px solid #dce6f4;border-radius:16px;padding:20px;background:#fbfdff}.site-footer{background:#eef4fb;border-top:1px solid #d7e2f2;margin-top:0}.footer-main{display:grid;grid-template-columns:1.2fr .8fr;gap:52px;padding:52px 0 34px}.footer-brand .brand{margin-bottom:14px}.footer-brand .brand img{width:60px;height:60px}.footer-brand>p{max-width:650px;color:#5b6980}.footer-quick{display:flex;gap:16px;flex-wrap:wrap}.footer-quick a{font-weight:800}.footer-email{font-weight:800;color:#21314c}.footer-legal{display:grid;grid-template-columns:1fr 1fr;gap:10px 18px;align-content:start}.footer-legal a{color:#43516a;font-weight:700}.footer-bottom{border-top:1px solid #d7e2f2;text-align:center;padding:20px}.footer-bottom p{margin:4px 0;color:#5e6c83;font-size:.9rem}.footer-bottom a{font-weight:800}.scroll-top{position:fixed;right:20px;bottom:20px;width:46px;height:46px;border-radius:14px;border:1px solid #cddbef;background:#fff;color:#1d4ed8;font-weight:900;box-shadow:0 10px 25px rgba(30,64,175,.12);opacity:0;pointer-events:none;transform:translateY(10px);transition:.2s;z-index:900}.scroll-top.show{opacity:1;pointer-events:auto;transform:none}.reveal{opacity:0;transform:translateY(14px);transition:opacity .55s ease,transform .55s ease}.reveal.visible{opacity:1;transform:none}.tag{display:inline-block;background:#edf4ff;color:#1d4ed8;border:1px solid #d8e6fb;border-radius:999px;padding:5px 10px;font-size:.78rem;font-weight:800}.meta-row{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}.inline-note{background:#f0f8ff;border-left:4px solid #2563eb;padding:14px 16px;border-radius:10px;color:#4e5f78}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:12px;top:12px;z-index:9999;background:#fff;padding:10px;border-radius:8px}
@media(max-width:980px){.primary-nav{position:absolute;left:20px;right:20px;top:72px;background:#fff;border:1px solid #d7e2f2;border-radius:16px;padding:12px;box-shadow:0 18px 40px rgba(35,62,105,.12);display:none;flex-direction:column;align-items:stretch}.primary-nav.is-open{display:flex}.primary-nav>a:not(.btn){padding:11px 12px}.menu-toggle{display:block}.hero-card,.about-layout,.download-box,.compat-grid,.installation{grid-template-columns:1fr}.feature-grid,.blog-list,.guide-grid{grid-template-columns:repeat(2,1fr)}.use-grid,.how-strip{grid-template-columns:repeat(2,1fr)}.how-strip{border-radius:18px}.step{border-bottom:1px solid #dce6f4}.step:nth-child(2){border-right:0}.content-shell{grid-template-columns:1fr}.sidebar{position:static}.footer-main{grid-template-columns:1fr}.release-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.container{width:min(100% - 24px,1120px)}.section{padding:66px 0}.hero{padding:44px 0}.hero-card{padding:26px 20px;border-radius:20px;gap:28px}.hero h1{font-size:clamp(2.35rem,13vw,3.6rem)}.hero-actions .btn{width:100%}.check-list,.feature-grid,.compat-list,.use-grid,.how-strip,.split-cards,.release-grid,.trouble-grid,.guide-grid,.blog-list,.contact-list,.footer-legal{grid-template-columns:1fr}.step{border-right:0}.download-box{padding:28px 20px}.article,.legal-card{padding:24px 20px}.faq-tabs{flex-direction:column}.faq-tab{width:100%}.footer-main{gap:28px}.footer-bottom{padding-inline:12px}.brand span{font-size:.96rem}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}.reveal{opacity:1;transform:none}}
/* 2026-08-29 requested header/footer/logo update */
.header-shell{min-height:80px}
.brand{gap:12px}
.brand img{width:58px;height:52px;object-fit:contain;flex:0 0 auto}
.primary-nav{gap:6px}
.site-footer{background:#eef4fb}
.footer-main{grid-template-columns:minmax(0,1.35fr) minmax(150px,.55fr) minmax(220px,.75fr);gap:54px;align-items:start;padding:54px 0 36px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand img{width:88px;height:78px}
.footer-brand>p{max-width:560px;margin:0;color:#5b6980}
.footer-links-column{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.footer-links-column h2{margin:4px 0 8px;color:#17233b;font-size:1rem;line-height:1.2}
.footer-links-column a{display:block;color:#43516a;font-weight:700;text-decoration:none}
.footer-links-column a:hover{color:#1d4ed8}
.footer-legal{display:flex;grid-template-columns:none;gap:10px}
.footer-pages{display:flex;flex-direction:column}
.footer-bottom{text-align:center}
@media(max-width:980px){
.footer-main{grid-template-columns:1fr 1fr;gap:36px}
.footer-brand{grid-column:1/-1}
}
@media(max-width:640px){
.brand img{width:52px;height:47px}
.footer-brand .brand img{width:78px;height:70px}
.footer-main{grid-template-columns:1fr;gap:30px}
.footer-brand{grid-column:auto}
.footer-pages,.footer-legal{width:100%}
}