* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Hiragino Sans", "Yu Gothic", sans-serif;
    color: #3a4a57;
    line-height: 1.7;
    background: #ffffff;
}

img {
    display: block;
    max-width: 100%;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    width: 92%;
    max-width: 1200px;
    margin: 0 auto;
}
/* =========================
   Header
========================= */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid #dbeef7;
    backdrop-filter: blur(8px);
}

.header-inner {
    min-height: 76px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.site-logo a {
    display: inline-block;
    font-size: 22px;
    font-weight: bold;
    color: #7abed6;
    line-height: 1.3;
}

/* PCの横並びメニューは消す */
.pc-nav {
    display: none;
}

.menu-toggle {
    display: flex;
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid #d7eef7;
    border-radius: 12px;
    padding: 0;
    cursor: pointer;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    box-shadow: 0 6px 18px rgba(120, 190, 215, 0.18);
    transition: 0.3s;
    flex-shrink: 0;
}

.menu-toggle:hover {
    background: #f4fcff;
}

.menu-toggle span {
    display: block;
    width: 26px;
    height: 3px;
    margin: 0 auto;
    background: #7fc9dd;
    border-radius: 999px;
}

.sp-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 82%;
    max-width: 360px;
    height: 100vh;
    background: #ffffff;
    z-index: 1100;
    box-shadow: -8px 0 30px rgba(120, 180, 210, 0.18);
    padding: 90px 24px 30px;
    transition: right 0.3s ease;
}

.sp-nav.active {
    right: 0;
}

.sp-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.sp-nav li + li {
    margin-top: 14px;
}

.sp-nav a {
    display: block;
    font-size: 17px;
    font-weight: bold;
    color: #5f7f90;
    padding: 12px 0;
    border-bottom: 1px solid #e7f5fb;
}

.menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(90, 135, 160, 0.28);
    z-index: 1050;
    opacity: 0;
    visibility: hidden;
    transition: 0.3s;
}

.menu-overlay.active {
    opacity: 1;
    visibility: visible;
}
/* =========================
   Hero
========================= */
.hero {
    position: relative;
    min-height: 86vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('img/hero.jpg') center center / cover no-repeat;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(rgba(255,255,255,0.38), rgb(180, 225, 240));
}

.hero-inner {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 100px 20px 80px;
}

.hero-sub {
    display: inline-block;
    background: rgba(255,255,255,0.85);
    color: #79b8cf;
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 18px;
}

.hero h1 {
    margin: 0 0 20px;
    font-size: 54px;
    line-height: 1.2;
    color: #ffffff;
    text-shadow: 0 3px 16px rgba(70, 120, 145, 0.24);
}

.hero p {
    margin: 0 auto 30px;
    max-width: 760px;
    font-size: 18px;
    color: #ffffff;
    text-shadow: 0 2px 12px rgba(70, 120, 145, 0.20);
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* =========================
   Buttons
========================= */
.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 999px;
    font-weight: bold;
    transition: 0.3s;
}

.btn-primary {
    background: #9fdff1;
    color: #ffffff;
    box-shadow: 0 10px 25px rgba(159, 223, 241, 0.30);
}

.btn-primary:hover {
    background: #8fd3e8;
}

.btn-secondary {
    background: rgba(255,255,255,0.92);
    color: #6baec5;
}

.btn-secondary:hover {
    background: #ffffff;
}

/* =========================
   Sections
========================= */
.section {
    padding: 90px 0;
}

.section-white {
    background: #ffffff;
}

.section-blue {
    background: #f3fbfe;
}

.section-title {
    text-align: center;
    margin-bottom: 42px;
}

.section-en {
    display: block;
    margin-bottom: 10px;
    font-size: 14px;
    font-weight: bold;
    letter-spacing: 0.08em;
    color: #8ecfe3;
}

.section-title h2,
.split-text h2,
.cta-box h2 {
    margin: 0 0 16px;
    font-size: 36px;
    line-height: 1.35;
    color: #6aaec5;
}

.section-title p,
.split-text p,
.cta-box p {
    margin: 0;
    color: #617988;
}

/* =========================
   Cards
========================= */
.card-grid {
    display: grid;
    gap: 24px;
}

.three-grid {
    grid-template-columns: repeat(3, 1fr);
}

.card-box {
    background: #ffffff;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 12px 30px rgba(175, 214, 227, 0.18);
}

.card-box img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.card-content {
    padding: 22px;
}

.card-content h3 {
    margin: 0 0 10px;
    font-size: 22px;
    color: #74bbd1;
}

.card-content p {
    margin: 0;
    color: #667d8d;
}

.price {
    margin-bottom: 10px !important;
    font-weight: bold;
    color: #7fc9dd !important;
}

/* =========================
   About split
========================= */
.split-layout {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 42px;
    align-items: center;
}

.split-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.split-images img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-radius: 20px;
}

.split-images img:first-child {
    grid-column: 1 / 3;
    height: 290px;
}

.split-text {
    text-align: left;
}

.status {
    margin-top: 20px !important;
    color: #8fcde0 !important;
    font-weight: bold;
}

/* =========================
   Gallery
========================= */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.gallery-grid img {
    width: 100%;
    height: 260px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: 0 10px 24px rgba(175, 214, 227, 0.15);
}

/* =========================
   Info
========================= */
.info-box {
    background: #ffffff;
    border-radius: 24px;
    padding: 34px;
    box-shadow: 0 12px 30px rgba(175, 214, 227, 0.16);
}

.info-row {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 20px;
    padding: 16px 0;
    border-bottom: 1px solid #e4f4fa;
}

.info-row:last-child {
    border-bottom: none;
}

.info-label {
    font-weight: bold;
    color: #7bbfd5;
}

.info-value {
    color: #607887;
}

/* =========================
   CTA
========================= */
.cta-box {
    margin-top: 40px;
    padding: 54px 24px;
    border-radius: 28px;
    text-align: center;
    background: linear-gradient(180deg, #eefbff 0%, #dff5fc 100%);
    box-shadow: 0 12px 30px rgba(175, 214, 227, 0.16);
}

/* =========================
   Footer
========================= */
.site-footer {
    background: #eaf8fd;
    padding: 60px 0 20px;
    color: #5f7f90;
    border-top: 1px solid #d7eef7;
}

.footer-inner {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr;
    gap: 30px;
}

.footer-logo {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 12px;
    color: #78bfd5;
}

.footer-links-group h3 {
    margin-top: 0;
    margin-bottom: 14px;
    font-size: 16px;
    color: #6fb5cb;
}

.footer-links-group ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links-group li {
    margin-bottom: 10px;
}

.footer-links-group a {
    font-size: 14px;
    color: #6f8fa0;
    transition: 0.2s;
}

.footer-links-group a:hover {
    color: #5aaec7;
}

.footer-bottom {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #d7eef7;
    text-align: center;
}

.copyright {
    font-size: 13px;
    color: #8aa5b1;
}

/* スマホ */
@media (max-width: 768px) {
    .footer-inner {
        grid-template-columns: 1fr;
    }
}

/* =========================
   Responsive
========================= */
@media (max-width: 1024px) {
    .three-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .split-layout,
    .footer-inner {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .pc-nav {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .site-logo a {
        font-size: 18px;
    }

    .hero {
        min-height: 78vh;
    }

    .hero h1 {
        font-size: 34px;
    }

    .hero p {
        font-size: 16px;
    }

    .section {
        padding: 70px 0;
    }

    .section-title h2,
    .split-text h2,
    .cta-box h2 {
        font-size: 28px;
    }

    .three-grid,
    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .card-box img,
    .gallery-grid img {
        height: 220px;
    }

    .split-images img:first-child,
    .split-images img {
        height: 200px;
    }

    .info-row {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .info-box {
        padding: 24px;
    }
}

.feature-points .card-content h3 {
    color: #67b7cf;
}

.feature-points .card-box {
    border: 1px solid #e2f4fa;
}