*{
    box-sizing:border-box;
}

html{
    scroll-behavior:smooth;
}

body{
    margin:0;
    background:
        radial-gradient(circle at top, rgba(42,168,239,.12), transparent 36rem),
        #08111f;
    color:#e8f2fb;
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        "Hiragino Kaku Gothic ProN",
        "Yu Gothic",
        Meiryo,
        sans-serif;
    line-height:1.8;
}

a{
    color:inherit;
}

.site-header{
    position:sticky;
    top:0;
    z-index:10;
    border-bottom:1px solid rgba(140,220,255,.16);
    background:rgba(8,17,31,.88);
    backdrop-filter:blur(12px);
}

.site-header__inner{
    width:min(1000px, calc(100% - 32px));
    min-height:64px;
    margin:0 auto;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
}

.site-title{
    color:#f8fcff;
    font-size:1.05rem;
    font-weight:800;
    letter-spacing:.08em;
    text-decoration:none;
    text-shadow:0 0 14px rgba(97,200,255,.35);
}

.back-link{
    color:#9edcff;
    font-size:.9rem;
    text-decoration:none;
}

.back-link:hover{
    color:#fff;
}

.privacy{
    width:min(1000px, calc(100% - 32px));
    margin:0 auto;
    padding:64px 0 80px;
}

.privacy-hero{
    padding:48px 36px;
    border:1px solid rgba(140,220,255,.18);
    border-radius:18px;
    background:
        linear-gradient(135deg, rgba(25,70,110,.4), rgba(8,17,31,.82));
    box-shadow:
        0 18px 50px rgba(0,0,0,.28),
        inset 0 1px rgba(255,255,255,.04);
}

.privacy-hero__label,
.privacy-section__label{
    margin:0;
    color:#67cfff;
    font-size:.75rem;
    font-weight:800;
    letter-spacing:.18em;
}

.privacy-hero h1{
    margin:6px 0 12px;
    color:#fff;
    font-size:clamp(2rem, 5vw, 3.3rem);
    line-height:1.2;
}

.privacy-hero__description{
    margin:0;
    color:#bad0df;
}

.privacy-nav{
    margin:28px 0;
    padding:26px;
    border:1px solid rgba(140,220,255,.14);
    border-radius:16px;
    background:rgba(12,27,47,.72);
}

.privacy-nav__title{
    margin:0 0 18px;
    font-size:1.05rem;
}

.privacy-nav__links{
    display:grid;
    grid-template-columns:repeat(2, minmax(0, 1fr));
    gap:10px;
}

.privacy-nav__links a{
    display:flex;
    align-items:center;
    gap:12px;
    min-height:48px;
    padding:10px 14px;
    border:1px solid rgba(140,220,255,.1);
    border-radius:10px;
    background:rgba(255,255,255,.025);
    color:#dcecf7;
    text-decoration:none;
    transition:.18s ease;
}

.privacy-nav__links a:hover{
    border-color:rgba(103,207,255,.45);
    background:rgba(103,207,255,.08);
    transform:translateY(-1px);
}

.privacy-nav__links span{
    color:#67cfff;
    font-size:.75rem;
    font-weight:800;
    letter-spacing:.08em;
}

.privacy-intro,
.privacy-section,
.revision{
    margin-top:24px;
    padding:32px;
    border:1px solid rgba(140,220,255,.13);
    border-radius:16px;
    background:rgba(10,23,40,.84);
    box-shadow:0 12px 34px rgba(0,0,0,.16);
    scroll-margin-top:86px;
}

.privacy-intro p,
.privacy-section p,
.revision p{
    margin:0;
}

.privacy-section p + p{
    margin-top:16px;
}

.privacy-section__heading{
    display:flex;
    align-items:center;
    gap:16px;
    margin-bottom:22px;
}

.privacy-section__number{
    flex:0 0 auto;
    display:grid;
    place-items:center;
    width:46px;
    height:46px;
    border:1px solid rgba(103,207,255,.42);
    border-radius:50%;
    color:#67cfff;
    font-size:.82rem;
    font-weight:800;
    box-shadow:0 0 20px rgba(42,168,239,.12);
}

.privacy-section h2,
.revision h2{
    margin:4px 0 0;
    color:#fff;
    font-size:1.35rem;
    line-height:1.4;
}

.privacy-section h3{
    margin:24px 0 8px;
    color:#dff4ff;
    font-size:1.05rem;
}

.privacy-list{
    margin:18px 0 0;
    padding-left:1.4em;
}

.privacy-list li{
    margin:8px 0;
    padding-left:.25em;
}

.privacy-list li::marker{
    color:#67cfff;
}

.privacy-note{
    margin:22px 0 0;
    padding:22px 24px;
    border:1px solid rgba(103,207,255,.32);
    border-left:5px solid #67cfff;
    border-radius:12px;
    background:rgba(103,207,255,.07);
}

.privacy-note strong{
    display:block;
    color:#dff6ff;
    font-size:1.05rem;
}

.privacy-note p{
    margin-top:8px;
    color:#c8dce8;
}

.revision{
    color:#aebfcb;
}

.revision h2{
    margin-bottom:10px;
    font-size:1.05rem;
}

.page-top-link{
    display:block;
    width:max-content;
    margin:28px 0 0 auto;
    color:#8fd8ff;
    font-size:.9rem;
    text-decoration:none;
}

.page-top-link:hover{
    color:#fff;
}

.footer{
    border-top:1px solid rgba(140,220,255,.12);
    padding:30px 16px 36px;
    background:#060d17;
    text-align:center;
}

.footer__links{
    display:flex;
    flex-wrap:wrap;
    justify-content:center;
    gap:10px 22px;
}

.footer__links a{
    color:#9eb4c4;
    font-size:16px;
    text-decoration:none;
}

.footer__links a:hover{
    color:#fff;
}

.footer__copyright{
    margin:18px 0 0;
    color:#627483;
    font-size:.8rem;
}

@media(max-width:700px){
    .site-header__inner,
    .privacy{
        width:min(100% - 24px, 1000px);
    }

    .site-header__inner{
        min-height:58px;
    }

    .privacy{
        padding:34px 0 56px;
    }

    .privacy-hero{
        padding:34px 22px;
        border-radius:14px;
    }

    .privacy-nav,
    .privacy-intro,
    .privacy-section,
    .revision{
        padding:22px 18px;
        border-radius:14px;
    }

    .privacy-nav__links{
        grid-template-columns:1fr;
    }

    .privacy-section__heading{
        align-items:flex-start;
        gap:12px;
    }

    .privacy-section__number{
        width:40px;
        height:40px;
    }

    .privacy-section h2{
        font-size:1.14rem;
    }

    .privacy-note{
        padding:18px;
    }
}