@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500&family=Shippori+Mincho:wght@400;500;600;700&display=swap');

:root {
    --bg-main: #F4F1EB; /* Warm paper / clay */
    --bg-alt: #EBE6DF; /* Slightly darker */
    --text-main: #2A2A2A; /* Sumi ink */
    --text-light: #5A5A5A;
    --accent-moss: #4A5D4E;
    --accent-moss-hover: #37473A;
    --accent-wood: #8B5A2B;
    --accent-stone: #8E9490;
    --white: #FFFFFF;
    --border-color: #D5D0C5;
    
    --font-heading: 'Shippori Mincho', serif;
    --font-body: 'Noto Sans JP', sans-serif;
    
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;
    --space-xxl: 12rem;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 2;
    font-size: 16px;
    font-weight: 300;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 500;
    line-height: 1.4;
    color: var(--text-main);
}

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

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

/* Typography Classes */
.t-h1-f7bb6 { font-size: clamp(2.5rem, 5vw, 4.5rem); letter-spacing: 0.05em; }
.t-h2-f7bb6 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: 0.05em; margin-bottom: var(--space-lg); }
.t-h3-f7bb6 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: var(--space-sm); }
.t-lead-f7bb6 { font-size: 1.2rem; line-height: 2.2; color: var(--text-light); }
.t-vertical-f7bb6 {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-family: var(--font-heading);
    letter-spacing: 0.2em;
    color: var(--accent-moss);
}

/* Layout */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5%;
}

.container-narrow {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 5%;
}

.section-f7bb6 {
    padding: var(--space-xl) 0;
    position: relative;
}

.section-lg-f7bb6 {
    padding: var(--space-xxl) 0;
}

/* Header & Nav */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: var(--space-md) 0;
    z-index: 1000;
    transition: all 0.4s ease;
}

.header.scrolled {
    background-color: rgba(244, 241, 235, 0.95);
    backdrop-filter: blur(10px);
    padding: var(--space-sm) 0;
    box-shadow: 0 1px 0 rgba(0,0,0,0.05);
}

.nav-container-f7bb6 {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-f7bb6 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.1em;
}

.logo-f7bb6 svg {
    width: 32px;
    height: 32px;
}

.nav-desktop-f7bb6 {
    display: flex;
    gap: 2.5rem;
}

.nav-desktop-f7bb6 a {
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    position: relative;
    padding-bottom: 4px;
}

.nav-desktop-f7bb6 a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--text-main);
    transition: width 0.3s ease;
}

.nav-desktop-f7bb6 a:hover::after,
.nav-desktop-f7bb6 a.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 20px;
    position: relative;
    z-index: 1001;
}

.hamburger span {
    position: absolute;
    width: 100%;
    height: 1px;
    background-color: var(--text-main);
    left: 0;
    transition: all 0.3s ease;
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.hamburger span:nth-child(3) { bottom: 0; }

.hamburger.active span:nth-child(1) { top: 50%; transform: translateY(-50%) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { bottom: 50%; transform: translateY(50%) rotate(-45deg); }

.nav-mobile {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: var(--bg-main);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: right 0.5s cubic-bezier(0.77, 0, 0.175, 1);
    z-index: 1000;
}

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

.nav-mobile a {
    font-family: var(--font-heading);
    font-size: 2rem;
    margin: var(--space-sm) 0;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.nav-mobile.active a {
    opacity: 1;
    transform: translateY(0);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 1rem 2.5rem;
    border: 1px solid var(--text-main);
    background: transparent;
    color: var(--text-main);
    font-family: var(--font-heading);
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.4s ease;
    text-transform: uppercase;
    font-size: 0.9rem;
}

.btn:hover {
    background-color: var(--text-main);
    color: var(--bg-main);
}

.btn-primary {
    background-color: var(--accent-moss);
    color: var(--white);
    border-color: var(--accent-moss);
}

.btn-primary:hover {
    background-color: var(--accent-moss-hover);
    border-color: var(--accent-moss-hover);
    color: var(--white);
}

/* Hero Sections */
.hero-f7bb6 {
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 120%;
    object-fit: cover;
    z-index: -2;
    transform: translateY(0); /* Parallax controlled by JS */
}

.hero-overlay-f7bb6 {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(244, 241, 235, 0.9) 0%, rgba(244, 241, 235, 0.4) 50%, rgba(0,0,0,0.1) 100%);
    z-index: -1;
}

.page-hero-f7bb6 {
    height: 60vh;
    min-height: 400px;
    display: flex;
    align-items: flex-end;
    padding-bottom: var(--space-xl);
    position: relative;
    background-color: var(--bg-alt);
}

.page-hero-img-f7bb6 {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -2;
    opacity: 0.6;
}

.page-hero-overlay-f7bb6 {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, var(--bg-main) 0%, transparent 100%);
    z-index: -1;
}

/* Grids & Layouts */
.grid-2-f7bb6 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.grid-3-f7bb6 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.asymmetric-grid-f7bb6 {
    display: grid;
    grid-template-columns: 4fr 5fr;
    gap: var(--space-xl);
    align-items: center;
}

.asymmetric-grid-f7bb6.reverse-f7bb6 {
    grid-template-columns: 5fr 4fr;
}

.img-frame-f7bb6 {
    position: relative;
    overflow: hidden;
}

.img-frame-f7bb6 img {
    transition: transform 1.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.img-frame-f7bb6:hover img {
    transform: scale(1.05);
}

/* Specific Components */
.concept-block-f7bb6 {
    display: flex;
    gap: var(--space-md);
}

.concept-vertical-title-f7bb6 {
    flex-shrink: 0;
}

.service-card-f7bb6 {
    border-top: 1px solid var(--border-color);
    padding: var(--space-md) 0;
    transition: all 0.3s ease;
}

.service-card-f7bb6 h3 {
    margin-bottom: var(--space-sm);
    color: var(--accent-moss);
}

.portfolio-item-f7bb6 {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/5;
}

.portfolio-item-f7bb6 img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.portfolio-info-f7bb6 {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--space-md);
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: var(--white);
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.4s ease;
}

.portfolio-item-f7bb6:hover .portfolio-info-f7bb6 {
    transform: translateY(0);
    opacity: 1;
}

/* Footer */
.footer-f7bb6 {
    background-color: var(--text-main);
    color: var(--bg-main);
    padding: var(--space-xl) 0 var(--space-md);
}

.footer-grid-f7bb6 {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.footer-links-f7bb6 h4 {
    color: var(--bg-main);
    margin-bottom: var(--space-md);
    font-size: 1.2rem;
}

.footer-links-f7bb6 ul {
    list-style: none;
}

.footer-links-f7bb6 li {
    margin-bottom: var(--space-sm);
}

.footer-links-f7bb6 a {
    color: rgba(255,255,255,0.7);
}

.footer-links-f7bb6 a:hover {
    color: var(--white);
}

.footer-bottom-f7bb6 {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--space-md);
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
}

/* Animations */
.fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1s cubic-bezier(0.2, 0.8, 0.2, 1), transform 1s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1-f7bb6 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* Mobile Adaptations */
@media (max-width: 992px) {
    .nav-desktop-f7bb6 { display: none; }
    .hamburger { display: block; }
    
    .grid-2-f7bb6, .grid-3-f7bb6, .asymmetric-grid-f7bb6, .asymmetric-grid-f7bb6.reverse-f7bb6, .footer-grid-f7bb6 {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .asymmetric-grid-f7bb6.reverse-f7bb6 .img-frame-f7bb6 {
        order: -1;
    }
    
    .t-h1-f7bb6 { font-size: 2.5rem; }
    .t-h2-f7bb6 { font-size: 2rem; }
    
    .section-f7bb6, .section-lg-f7bb6 { padding: var(--space-lg) 0; }
}

@media (max-width: 480px) {
    .concept-block-f7bb6 {
        flex-direction: column;
    }
    .t-vertical-f7bb6 {
        writing-mode: horizontal-tb;
        letter-spacing: 0.1em;
        margin-bottom: var(--space-sm);
    }
}