:root{
    --bg:#f8fafc;
    --surface:#ffffff;
    --surface-2:#f1f5f9;
    --surface-3:#eef4ff;
    --text:#0f172a;
    --muted:#64748b;
    --line:#e2e8f0;
    --primary:#2563eb;
    --primary-strong:#1d4ed8;
    --shadow:0 18px 44px rgba(15,23,42,.08);
    --shadow-soft:0 10px 24px rgba(15,23,42,.05);
    --radius-lg:28px;
    --radius-md:20px;
    --radius-sm:14px;
    --container:1180px;
    --font:Inter, Arial, sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    margin:0;
    font-family:var(--font);
    background:
        radial-gradient(circle at top left, rgba(37,99,235,.08), transparent 26%),
        linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
    color:var(--text);
    line-height:1.68;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:var(--primary)}
a:hover{color:var(--primary-strong)}
.container{
    width:min(var(--container), calc(100% - 32px));
    margin-inline:auto;
}
.site-header{
    position:sticky;
    top:0;
    z-index:50;
    background:rgba(248,250,252,.82);
    backdrop-filter:blur(16px);
    border-bottom:1px solid rgba(226,232,240,.8);
}
.header-row{
    min-height:82px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
}
.brand{
    display:flex;
    align-items:center;
    gap:12px;
    color:var(--text);
}
.brand-logo{
    width:42px;
    height:42px;
}
.brand-copy{
    display:flex;
    flex-direction:column;
    line-height:1.1;
}
.brand-title{
    font-size:1.05rem;
    font-weight:800;
    color:var(--text);
}
.brand-subtitle{
    font-size:.78rem;
    color:var(--muted);
    font-weight:600;
    letter-spacing:.2px;
}
.site-nav{
    display:flex;
    align-items:center;
    gap:18px;
}
.site-nav a{
    color:var(--muted);
    font-weight:700;
    font-size:.96rem;
}
.site-nav a.active,
.site-nav a:hover{
    color:var(--text);
}
.nav-cta{margin-left:8px}
.menu-toggle{
    display:none;
    width:48px;
    height:48px;
    border-radius:16px;
    border:1px solid var(--line);
    background:#fff;
    cursor:pointer;
    padding:10px;
}
.menu-toggle span{
    display:block;
    height:2px;
    background:var(--text);
    margin:6px 0;
    border-radius:999px;
}
.hero{
    padding:88px 0 60px;
}
.hero-grid{
    display:grid;
    grid-template-columns:1.05fr .95fr;
    gap:40px;
    align-items:center;
}
.eyebrow{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    min-height:36px;
    padding:0 14px;
    border:1px solid #dbeafe;
    border-radius:999px;
    background:#eff6ff;
    color:#1d4ed8;
    font-size:.83rem;
    font-weight:800;
}
.hero-copy h1,
.page-hero h1{
    margin:16px 0 14px;
    font-size:clamp(2.4rem, 5vw, 4.4rem);
    line-height:1.04;
    letter-spacing:-1.6px;
}
.hero-copy p,
.page-hero p{
    margin:0;
    max-width:720px;
    color:var(--muted);
    font-size:1.08rem;
}
.hero-actions,
.card-actions,
.stack-actions{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    margin-top:24px;
}
.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    min-height:48px;
    padding:0 18px;
    border-radius:16px;
    border:1px solid transparent;
    font-weight:800;
    transition:.2s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{
    background:linear-gradient(180deg, #2563eb, #1d4ed8);
    color:#fff !important;
    box-shadow:0 16px 30px rgba(37,99,235,.22);
}
.btn-secondary{
    background:#fff;
    color:var(--text) !important;
    border-color:var(--line);
    box-shadow:var(--shadow-soft);
}
.btn-sm{
    min-height:42px;
    padding:0 14px;
    font-size:.94rem;
}
.hero-stats{
    display:grid;
    grid-template-columns:repeat(3, minmax(0,1fr));
    gap:14px;
    margin-top:28px;
}
.stat-box{
    background:rgba(255,255,255,.88);
    border:1px solid var(--line);
    box-shadow:var(--shadow-soft);
    border-radius:22px;
    padding:18px;
}
.stat-box strong{
    display:block;
    font-size:1.35rem;
}
.stat-box span{
    color:var(--muted);
    font-size:.92rem;
}
.hero-visual{
    display:flex;
    justify-content:center;
}
.hero-panel{
    position:relative;
    width:min(100%, 520px);
    min-height:540px;
    border-radius:32px;
    background:linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
    border:1px solid var(--line);
    box-shadow:var(--shadow);
    padding:26px;
    overflow:hidden;
}
.mini-bar{
    width:120px;
    height:10px;
    border-radius:999px;
    background:#dbeafe;
    margin-bottom:18px;
}
.mini-card{
    max-width:280px;
    background:#fff;
    border:1px solid var(--line);
    box-shadow:var(--shadow-soft);
    border-radius:24px;
    padding:20px;
}
.mini-badge{
    display:inline-flex;
    padding:6px 10px;
    border-radius:999px;
    background:#eff6ff;
    color:#1d4ed8;
    font-weight:800;
    font-size:.8rem;
}
.mini-card h3{
    margin:14px 0 8px;
    font-size:1.18rem;
}
.mini-card p{
    margin:0;
    color:var(--muted);
    font-size:.96rem;
}
.mini-actions{
    display:flex;
    gap:10px;
    margin-top:16px;
    flex-wrap:wrap;
}
.mini-actions span{
    background:#f8fafc;
    border:1px solid var(--line);
    border-radius:999px;
    padding:7px 10px;
    font-size:.84rem;
    font-weight:700;
}
.phone-mockup{
    position:absolute;
    right:24px;
    bottom:24px;
    width:240px;
    height:470px;
    border-radius:38px;
    background:#0f172a;
    padding:14px;
    box-shadow:0 30px 60px rgba(15,23,42,.18);
}
.phone-screen{
    width:100%;
    height:100%;
    background:#fff;
    border-radius:28px;
    padding:18px;
}
.screen-top{
    width:100%;
    height:74px;
    border-radius:20px;
    background:linear-gradient(180deg, #2563eb 0%, #1d4ed8 100%);
}
.screen-row{
    width:100%;
    height:72px;
    border-radius:18px;
    background:#eef4ff;
    margin-top:14px;
}
.screen-row.large{height:110px}
.screen-chip{
    width:140px;
    height:36px;
    border-radius:999px;
    background:#bfdbfe;
    margin-top:16px;
}
.page-hero{
    padding:70px 0 22px;
}
.section{
    padding:32px 0 84px;
}
.section-muted{
    background:linear-gradient(180deg, rgba(239,246,255,.7), rgba(255,255,255,0));
}
.section-head{
    max-width:760px;
    margin-bottom:28px;
}
.section-head h2{
    margin:14px 0 10px;
    font-size:2rem;
}
.section-head p{color:var(--muted);margin:0}
.feature-card{
    display:grid;
    grid-template-columns:1.05fr .95fr;
    gap:28px;
    align-items:center;
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow);
    padding:28px;
}
.feature-card h3{
    margin:16px 0 10px;
    font-size:2rem;
}
.feature-card p{margin:0;color:var(--muted)}
.feature-cover-wrap{
    background:linear-gradient(180deg, #f8fbff, #eef4ff);
    border:1px solid var(--line);
    border-radius:24px;
    padding:16px;
}
.feature-cover{
    width:100%;
    border-radius:20px;
}
.card-grid{
    display:grid;
    grid-template-columns:repeat(2, minmax(0, 1fr));
    gap:24px;
}
.card-grid.three-col{
    grid-template-columns:repeat(3, minmax(0, 1fr));
}
.card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow);
    overflow:hidden;
}
.card-body{padding:24px}
.app-cover{
    width:100%;
    aspect-ratio:16/9;
    object-fit:cover;
    background:#eef4ff;
}
.app-card h2,
.app-card h3,
.info-card h3{
    margin:14px 0 10px;
}
.app-card p,
.info-card p,
.meta-list,
.policy-card p,
.footer-note{
    color:var(--muted);
}
.tag{
    display:inline-flex;
    padding:6px 10px;
    border-radius:999px;
    background:#eff6ff;
    color:#1d4ed8;
    font-size:.82rem;
    font-weight:800;
}
.tag.muted{
    background:#f8fafc;
    color:var(--muted);
    border:1px solid var(--line);
}
.meta-pills{
    display:flex;
    gap:8px;
    flex-wrap:wrap;
}
.meta-list{
    display:grid;
    gap:6px;
    margin-top:14px;
}
.placeholder-card{
    display:flex;
    flex-direction:column;
    justify-content:center;
}
.placeholder-icon{
    width:76px;
    height:76px;
    display:grid;
    place-items:center;
    margin:24px 0 0 24px;
    border-radius:22px;
    background:#eff6ff;
    color:#2563eb;
    font-size:2rem;
    font-weight:900;
}
.code-list{
    display:grid;
    gap:10px;
    margin-top:16px;
}
.code-list code{
    display:block;
    background:#eff6ff;
    color:#1e3a8a;
    padding:12px 14px;
    border-radius:14px;
    font-size:.92rem;
    overflow:auto;
}
.check-list{
    list-style:none;
    padding:0;
    margin:18px 0 0;
    display:grid;
    gap:10px;
}
.check-list li{
    position:relative;
    padding-left:28px;
    color:var(--text);
    font-weight:600;
}
.check-list li::before{
    content:"✓";
    position:absolute;
    left:0;
    top:0;
    color:var(--primary);
    font-weight:900;
}
.detail-layout{
    display:grid;
    grid-template-columns:minmax(0, 1fr) 340px;
    gap:24px;
}
.detail-main{
    display:grid;
    gap:24px;
}
.detail-side{
    display:grid;
    gap:24px;
    align-content:start;
}
.detail-card{overflow:visible}
.app-hero{
    display:flex;
    align-items:center;
    gap:18px;
}
.app-icon{
    width:86px;
    height:86px;
    border-radius:24px;
    border:1px solid var(--line);
    box-shadow:var(--shadow-soft);
    background:#fff;
}
.app-hero-copy h1{
    margin-bottom:12px;
}
.preview-grid{
    display:grid;
    grid-template-columns:repeat(2, minmax(0,1fr));
    gap:18px;
}
.preview-image{
    background:#fff;
    border:1px solid var(--line);
    border-radius:24px;
    box-shadow:var(--shadow-soft);
}
.info-list{
    margin:0;
    padding-left:18px;
}
.info-list.plain{
    list-style:none;
    padding-left:0;
}
.info-list li{
    margin:10px 0;
}
.policy-wrap{
    max-width:900px;
}
.policy-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow);
    padding:28px;
}
.policy-card h2{
    margin-top:28px;
    font-size:1.28rem;
}
.notice-box{
    margin-top:26px;
    padding:16px 18px;
    border-radius:18px;
    background:#fff7ed;
    border:1px solid #fed7aa;
    color:#9a3412;
}
.list-panel{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow);
    overflow:hidden;
}
.list-item{
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:14px;
    padding:20px 24px;
    color:inherit;
}
.list-item + .list-item{
    border-top:1px solid var(--line);
}
.list-item strong{
    display:block;
    color:var(--text);
    margin-bottom:4px;
}
.list-item span{color:var(--muted)}
.list-arrow{
    font-size:1.25rem;
    color:var(--primary) !important;
    font-weight:800;
}
.faq-list details{
    background:#fbfdff;
    border:1px solid var(--line);
    border-radius:18px;
    padding:14px 16px;
    margin-top:12px;
}
.faq-list summary{
    cursor:pointer;
    font-weight:800;
}
.site-footer{
    margin-top:24px;
    padding:44px 0 20px;
    border-top:1px solid var(--line);
    background:#fff;
}
.footer-grid{
    display:grid;
    grid-template-columns:1.2fr .8fr .8fr;
    gap:28px;
}
.footer-brand{
    display:flex;
    gap:14px;
    align-items:flex-start;
}
.footer-brand img{
    width:44px;
    height:44px;
}
.footer-grid h3,
.footer-grid h4{
    margin:0 0 12px;
}
.footer-grid p{
    margin:0;
    color:var(--muted);
}
.footer-links{
    list-style:none;
    padding:0;
    margin:0;
}
.footer-links li{
    margin:10px 0;
}
.footer-bottom{
    display:flex;
    justify-content:space-between;
    gap:20px;
    margin-top:22px;
    padding-top:18px;
    border-top:1px solid var(--line);
    color:var(--muted);
    font-size:.95rem;
}
@media (max-width: 1024px){
    .hero-grid,
    .feature-card,
    .detail-layout,
    .footer-grid{
        grid-template-columns:1fr;
    }
    .card-grid.three-col{
        grid-template-columns:1fr;
    }
    .detail-side{
        grid-template-columns:repeat(2, minmax(0,1fr));
    }
}
@media (max-width: 860px){
    .menu-toggle{display:block}
    .site-nav{
        position:absolute;
        top:82px;
        left:16px;
        right:16px;
        padding:16px;
        background:#fff;
        border:1px solid var(--line);
        border-radius:22px;
        box-shadow:var(--shadow);
        display:none;
        flex-direction:column;
        align-items:stretch;
    }
    .site-nav.open{display:flex}
    .nav-cta{margin-left:0}
    .hero-stats,
    .card-grid,
    .preview-grid,
    .detail-side{
        grid-template-columns:1fr;
    }
    .phone-mockup{
        position:relative;
        right:auto;
        bottom:auto;
        width:220px;
        height:430px;
        margin:22px auto 0;
    }
    .hero-panel{
        min-height:auto;
    }
}
@media (max-width: 640px){
    .hero,
    .page-hero{
        padding-top:54px;
    }
    .hero-copy h1,
    .page-hero h1{
        font-size:clamp(2rem, 8vw, 3rem);
    }
    .hero-actions,
    .card-actions,
    .stack-actions{
        flex-direction:column;
    }
    .btn{width:100%}
    .app-hero{
        align-items:flex-start;
        flex-direction:column;
    }
    .footer-bottom{
        flex-direction:column;
    }
}