:root {
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --accent-color: #1a392a; /* Sophisticated Deep Green */
    --accent-light: #2d4a3e;
    --muted-color: #666666;
    --section-bg: #f4f7f5; /* Very subtle green tint */
    --font-serif: "Bodoni Moda", serif;
    --font-sans: "Inter", "Noto Sans JP", sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

@media (max-width: 768px) {
    .container {
        padding: 0 24px;
    }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 30px 0;
    transition: 0.4s cubic-bezier(0.2, 0, 0, 1);
}

.header.scrolled {
    padding: 15px 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.05em;
    line-height: 1;
}

.nav {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-color);
    transition: 0.3s;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    background: var(--accent-color);
    color: #fff;
    padding: 12px 24px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    border-radius: 0;
}

.nav-cta:hover {
    background: #333;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    width: 24px;
    height: 1px;
    background: var(--accent-color);
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    .menu-toggle {
        display: flex;
    }
    .header {
        padding: 20px 0;
    }
}

/* Hero */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 100px;
    background: #fff;
    background-image: radial-gradient(circle at 90% 10%, rgba(26, 57, 42, 0.03) 0%, transparent 40%);
}

.hero-bg-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 20vw;
    font-weight: 900;
    color: #f8faf9;
    z-index: 1;
    pointer-events: none;
    white-space: nowrap;
    letter-spacing: -0.05em;
}

.hero-container {
    position: relative;
    z-index: 2;
}

.hero-tag {
    display: block;
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.3em;
    margin-bottom: 24px;
    color: var(--accent-light);
    opacity: 0.8;
}

.hero-title {
    font-size: 5rem;
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 30px;
}

.hero-title .title-line {
    display: block;
}

.hero-title .accent {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
    color: var(--accent-color);
}

.hero-description {
    font-size: 1.15rem;
    color: var(--muted-color);
    margin-bottom: 45px;
    max-width: 600px;
    line-height: 1.8;
}

.btn-main {
    display: inline-block;
    padding: 20px 54px;
    background: var(--accent-color);
    color: #fff;
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.15em;
    transition: 0.5s cubic-bezier(0.2, 0, 0, 1);
}

.btn-main:hover {
    background: #000;
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(26, 57, 42, 0.2);
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    right: 40px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.25em;
    transform: rotate(90deg);
    transform-origin: right bottom;
    color: var(--accent-light);
}

.hero-scroll::after {
    content: '';
    display: inline-block;
    width: 60px;
    height: 1px;
    background: var(--accent-light);
    vertical-align: middle;
    margin-left: 15px;
    opacity: 0.5;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
    .hero-description {
        font-size: 1rem;
    }
    .hero-bg-text {
        font-size: 30vw;
    }
}

/* Sections Common */
section {
    padding: 160px 0;
}

.section-label {
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.4em;
    color: var(--accent-light);
    margin-bottom: 24px;
    text-transform: uppercase;
    opacity: 0.6;
}

.section-label.white {
    color: rgba(255,255,255,0.4);
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.01em;
}

@media (max-width: 768px) {
    section {
        padding: 100px 0;
    }
    .section-title {
        font-size: 2.2rem;
    }
}

/* About */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    align-items: center;
}

.about-title {
    font-family: var(--font-serif);
    font-size: 3.5rem;
    font-weight: 400;
    line-height: 1.1;
    margin-bottom: 35px;
    color: var(--accent-color);
}

.about-description {
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--muted-color);
}

.img-placeholder {
    aspect-ratio: 4/5;
    background: linear-gradient(135deg, #f0f4f2 0%, #e8edea 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 6rem;
    color: rgba(26, 57, 42, 0.05);
    font-weight: 800;
    position: relative;
    overflow: hidden;
}

.img-placeholder::after {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    .about-title {
        font-size: 2.8rem;
    }
}

/* Service */
.service {
    background: var(--section-bg);
}

.service-list {
    margin-top: 100px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

.service-item {
    background: #fff;
    padding: 80px;
    display: flex;
    gap: 80px;
    transition: 0.6s cubic-bezier(0.2, 0, 0, 1);
    border: 1px solid transparent;
}

.service-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 30px 80px rgba(26, 57, 42, 0.05);
    border-color: rgba(26, 57, 42, 0.05);
}

.service-num {
    font-family: var(--font-serif);
    font-size: 3.5rem;
    font-weight: 400;
    line-height: 1;
    color: rgba(26, 57, 42, 0.08);
}

.service-name {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -0.01em;
}

.service-desc {
    font-size: 1.05rem;
    color: var(--muted-color);
    margin-bottom: 30px;
    line-height: 1.8;
}

.service-tags {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--accent-light);
    opacity: 0.4;
    text-transform: uppercase;
}

@media (max-width: 768px) {
    .service-item {
        flex-direction: column;
        padding: 50px 30px;
        gap: 30px;
    }
    .service-name {
        font-size: 1.5rem;
    }
}

/* Cases */
.cases-slider {
    margin-top: 80px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.case-box {
    cursor: pointer;
}

.case-img-wrap {
    overflow: hidden;
    margin-bottom: 28px;
    background: #eee;
}

.case-img-wrap .img-placeholder {
    aspect-ratio: 16/11;
    transition: 1s cubic-bezier(0.2, 0, 0, 1);
    font-size: 1.2rem;
    letter-spacing: 0.3em;
}

.case-box:hover .img-placeholder {
    transform: scale(1.08);
}

.case-category {
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.2em;
    color: var(--accent-light);
    opacity: 0.5;
    margin-bottom: 12px;
    display: block;
    text-transform: uppercase;
}

.case-name {
    font-size: 1.2rem;
    font-weight: 800;
    line-height: 1.45;
    letter-spacing: -0.01em;
}

@media (max-width: 992px) {
    .cases-slider {
        grid-template-columns: 1fr;
        gap: 60px;
    }
}

/* Booking */
.booking {
    background: var(--accent-color);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.booking::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 10% 90%, rgba(255,255,255,0.05) 0%, transparent 50%);
    pointer-events: none;
}

.booking-card {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

.booking-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 30px;
    letter-spacing: -0.02em;
}

.booking-text {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: 70px;
    line-height: 1.8;
}

.calendar-container {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    color: #000;
    box-shadow: 0 40px 100px rgba(0,0,0,0.2);
}

@media (max-width: 768px) {
    .booking-title {
        font-size: 2rem;
    }
    .booking-text {
        font-size: 1rem;
        margin-bottom: 40px;
    }
    .calendar-container {
        padding: 15px;
    }
}

/* Contact */
.contact {
    background: #fff;
}

.contact-wrap {
    text-align: center;
}

.contact-title {
    font-family: var(--font-serif);
    font-size: 9vw;
    font-weight: 400;
    line-height: 0.9;
    margin-bottom: 80px;
    letter-spacing: -0.04em;
    color: var(--accent-color);
}

.contact-mail {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 400;
    border-bottom: 2px solid var(--accent-color);
    display: inline-block;
    margin-bottom: 20px;
    color: var(--accent-color);
}

.contact-sub {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--accent-light);
    opacity: 0.6;
    letter-spacing: 0.1em;
}

@media (max-width: 768px) {
    .contact-title {
        font-size: 15vw;
    }
    .contact-mail {
        font-size: 1.5rem;
    }
}

/* Footer */
.footer {
    padding: 80px 0;
    border-top: 1px solid #eee;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 10px;
    display: block;
}

.footer-copy {
    font-size: 0.75rem;
    color: #aaa;
}

.footer-right {
    display: flex;
    gap: 30px;
}

.footer-right a {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
}

@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        gap: 40px;
        text-align: center;
    }
    .footer-right {
        justify-content: center;
        flex-wrap: wrap;
    }
}