/* ===== Base ===== */
body {
    margin: 0;
    background: #0f0f10;
    color: #e6e6e6;
    font-family: "Noto Sans JP", sans-serif;
    letter-spacing: 0.03em;
}

/* ===== Header ===== */
.header {
    border-bottom: 1px solid #222;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-family: "Playfair Display", serif;
    font-size: 22px;
    color: #c9a24d;
    text-decoration: none;
    letter-spacing: 0.15em;
}

/* ===== Navigation ===== */
.nav a {
    margin-left: 24px;
    color: #e6e6e6;
    text-decoration: none;
    font-size: 14px;
}

.nav a:hover {
    color: #c9a24d;
}

.nav-user {
    margin-right: 16px;
    font-size: 13px;
    color: #aaa;
}

/* ===== Main ===== */
main {
    min-height: calc(100vh - 160px);
}

/* ===== Footer ===== */
.footer {
    border-top: 1px solid #222;
    text-align: center;
    padding: 24px;
    font-size: 12px;
    color: #777;
}

/* ===== Concept ===== */
.concept {
    padding: 140px 32px 100px;
    text-align: center;
}

.concept h2 {
    font-family: "Playfair Display", serif;
    font-size: 44px;
    letter-spacing: 0.15em;
    margin-bottom: 32px;
}

.concept-lead {
    font-size: 16px;
    color: #bbb;
    line-height: 2;
}

/* ===== Features ===== */
.features {
    padding: 100px 32px;
    background: #111;
}

.features-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
}

.feature img {
    width: 100%;
    height: 260px;
    object-fit: cover;
    margin-bottom: 24px;
}

.feature h3 {
    font-size: 18px;
    margin-bottom: 16px;
    letter-spacing: 0.1em;
}

.feature p {
    font-size: 14px;
    color: #aaa;
    line-height: 1.9;
}

/* ===== Getting Started ===== */
.getting-started {
    padding: 120px 32px;
    text-align: center;
}

.getting-started h2 {
    font-family: "Playfair Display", serif;
    font-size: 32px;
    margin-bottom: 24px;
}

.getting-started p {
    color: #bbb;
    margin-bottom: 48px;
    line-height: 2;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .features-inner {
        grid-template-columns: 1fr;
    }
}