:root {
    --main-black: #050505;
    --accent-gold: #e2e2e2;
    --neon-blue: #00f2ff;
    --font-en: 'Syncopate', sans-serif;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--main-black);
    color: #fff;
    overflow-x: hidden;
}

.main-visual {
    height: 100vh;
    width: 100%;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    background-image: url('https://images.unsplash.com/photo-1514525253361-bee8a4874a30?auto=format&fit=crop&q=80');
    /* ライブハウス風背景 */
    background-size: cover;
    background-position: center;
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.4) 0%, rgba(5, 5, 5, 1) 90%);
    z-index: 1;
}

.content {
    position: relative;
    z-index: 2;
    width: 85%;
    max-width: 600px;
    height: 85vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* ヘッダー周り */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-en);
    font-size: 1.5rem;
    border-bottom: 2px solid var(--neon-blue);
}

.status-badge {
    font-size: 0.6rem;
    letter-spacing: 2px;
    border: 1px solid #fff;
    padding: 4px 8px;
    border-radius: 4px;
}

/* ヒーローセクション */
h1 {
    font-family: var(--font-en);
    font-size: 3rem;
    line-height: 1;
    margin: 20px 0;
    letter-spacing: -2px;
}

.main-copy {
    font-size: 0.95rem;
    line-height: 1.8;
    color: #ccc;
    border-left: 2px solid var(--neon-blue);
    padding-left: 15px;
}

/* サークル活動内容 */
.features {
    margin: 30px 0;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 15px;
    background: rgba(255, 255, 255, 0.05);
    padding: 10px 15px;
    border-radius: 8px;
}

.num {
    font-family: var(--font-en);
    color: var(--neon-blue);
    font-size: 0.8rem;
}

.feature-item h3 {
    margin: 0;
    font-size: 1rem;
}

.feature-item p {
    margin: 0;
    font-size: 0.8rem;
    color: #888;
}

/* 円形ボタン */
.cta-wrap {
    text-align: center;
}

.circle-btn {
    position: relative;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 100px;
    height: 100px;
    text-decoration: none;
    color: #fff;
}

.inner-text {
    font-family: var(--font-en);
    font-size: 0.8rem;
    z-index: 3;
}

svg {
    position: absolute;
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

circle {
    fill: none;
    stroke: var(--neon-blue);
    stroke-width: 2;
    stroke-dasharray: 300;
    stroke-dashoffset: 300;
    transition: 0.5s;
}

.circle-btn:hover circle {
    stroke-dashoffset: 0;
}

.invite-msg {
    margin-top: 15px;
    font-size: 0.8rem;
    font-style: italic;
    color: var(--neon-blue);
}

footer {
    font-size: 0.6rem;
    color: #444;
}