body {
    margin: 0;
    font-family: "Segoe UI", sans-serif;
    background: linear-gradient(135deg, #020617, #0f172a);
    color: #e2e8f0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}


/* 名前 */
.name {
    font-size: 2.8em;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

/* 説明 */
.description {
    opacity: 0.7;
    margin-bottom: 30px;
}

/* セクション */
.section {
    margin: 25px 0;
}

.section h2 {
    margin-bottom: 10px;
    font-size: 1.2em;
    opacity: 0.8;
}

/* リンク */
.section a {
    display: inline-block;
    margin: 5px;
    padding: 10px 20px;
    text-decoration: none;
    color: #e2e8f0;
    background: #1d4ed8;
    border-radius: 10px;
    transition: 0.25s;
}

.section a:hover {
    background: #2563eb;
    transform: translateY(-2px);
}

:root {
    --bg: #05060a;
    /* near-black */
    --panel: #071024;
    /* deep navy */
    --accent: #0ea5e9;
    /* cyan/sky */
    --accent-2: #3b82f6;
    /* blue */
    --muted: #9fb6d8;
    --glass: rgba(255, 255, 255, 0.04);
    --glass-2: rgba(255, 255, 255, 0.02);
    --radius: 14px;
    --max-width: 1200px;
    --shadow: 0 8px 30px rgba(2, 6, 23, 0.6);
    font-family: Inter, system-ui, -apple-system, "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", sans-serif;
}

* {
    box-sizing: border-box
}

/* subtle animated gradient overlay */
.bg-shift {
    position: fixed;
    inset: 0;
    pointer-events: none;
    mix-blend-mode: screen;
    opacity: 0.6;
    z-index: 0;
    background: linear-gradient(120deg, rgba(14, 165, 233, 0.06), rgba(59, 130, 246, 0.04), rgba(7, 10, 20, 0));
    animation: bgFloat 20s linear infinite;
}

@keyframes bgFloat {
    0% {
        background-position: 0% 0%
    }

    50% {
        background-position: 100% 50%
    }

    100% {
        background-position: 0% 0%
    }
}

/* container */
.wrap {
    position: relative;
    z-index: 5;
    max-width: var(--max-width);
    /* margin: 48px auto; */
    padding: 32px
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 28px
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1em;
}

img {
    max-width: 200px;
    max-height: 200px;
}

.logo .mark {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #00101a;
    font-weight: 700;
    box-shadow: var(--shadow);
    transform: translateZ(0);
}

.sitop {
    margin-top: 0;
}

.sitop nav a:hover {
    background-color: #00aeffc1;
}

.logo h1 {
    margin: 0;
    font-size: 18px;
    color: #dff3ff;
    letter-spacing: 1px
}

nav {
    display: flex;
    gap: 12px
}

nav a {
    color: var(--muted);
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 10px;
    transition: all .22s
}

nav a:hover {
    background-color: #00aeffc1;
    background: var(--glass);
    color: #fff;
    transform: translateY(-3px)
}


.about-card {
    margin-top: 20px;
}

/* タイトル */
.about-title {
    margin-bottom: 20px;
    font-size: 20px;
    letter-spacing: 1px;
}

/* 各セクション */
.about-section {
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    line-height: 15px;
}

/* 最後の線消す */
.about-section:last-child {
    border-bottom: none;
}

/* 見出し */
.about-section h5 {
    margin: 0 0 5px;
    font-size: 14px;
    color: #9fb6d8;
    letter-spacing: 0.5px;
}

/* 内容 */
.about-section p {
    margin: 0;
    font-size: 15px;
    color: #e2e8f0;
}

.addons-card {
    /* background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
    border-radius: 20px;
    padding: 36px;
    box-shadow: var(--shadow);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px) */
    /* margin: 0; */
    line-height: 10px;
}

.addons-card .warn {
    /* margin-top: 10px; */
    padding-top: 5px;
    padding-bottom: 8px;
    padding-left: 5px;
    padding-right: 5px;
    background-color: #ff00005a;
    color: #000000;
    border-radius: 8px;
    line-height: 20px;
    align-items: center;
}

/* .about-me {
    line-height: 0.em;
} */

.title {
    font-size: 24px;
    color: #eaf8ff;
    margin: 0 0 10px;
    line-height: 1.02;
    font-family: "Hachi Maru Pop", cursive;
    font-weight: 400;
    font-style: normal;
}

.subtitle {
    color: var(--muted);
    margin: 0 0 22px
}

.cta-row {
    display: flex;
    gap: 12px;
    align-items: center
}

.btn {
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    color: #001019;
    padding: 12px 18px;
    border-radius: 12px;
    border: 0;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.12);
    transition: transform .18s, box-shadow .18s
}

.btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 50px rgba(59, 130, 246, 0.16)
}

.btn.ghost {
    background: transparent;
    color: var(--muted);
    border: 1px solid rgba(255, 255, 255, 0.04)
}


/* addons grid */
.addons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 18px;
    margin-top: 26px
}

.card {
    /* animation: floatUp 6s ease-in-out infinite; */
    background: linear-gradient(180deg,
            rgba(255, 255, 255, 0.02),
            rgba(255, 255, 255, 0.01));
    border-radius: 20px;
    /* padding: 36px; */
    padding-top: 0.3em;
    padding-bottom: 0.3em;
    padding-left: 2em;
    padding-right: 2em;
    box-shadow: var(--shadow);
    /* backdrop-filter: blur(6px); */
    /* -webkit-backdrop-filter: blur(6px); */
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: transform .24s, box-shadow .24s;
    transition: 0.3s;
    margin-top: 0.5em;
    margin-bottom: 0.5em;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
    background-color: #3b83f640;
}

.card .thumb {
    height: 120px;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.06), rgba(59, 130, 246, 0.04));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted);
    font-weight: 700
}

.card h4 {
    margin: 12px 0 6px;
    color: #eaf8ff
}


.meta {
    font-size: 13px;
    color: var(--muted)
}

.card .actions {
    display: flex;
    gap: 8px;
    margin-top: 12px
}

/* footer */
footer {
    margin: 48px 0 20px;
    color: var(--muted);
    text-align: center;
    font-size: 13px
}


.site-info-card {
    margin-top: 1em;
    /* padding-top: 20px; */
    border-top: 1px solid rgba(223, 223, 223, 0.1);
    font-family: "Klee One", cursive;
    font-weight: 300;
    /* display: grid; */
}

footer {
    margin: 48px 0 20px;
    color: var(--muted);
    text-align: center;
    font-size: 13px
}