:root {
    --bg-color: #FAF9F6;
    --surface-color: #F2F0EB;
    --primary-color: #064E3B; /* Deep Emerald */
    --accent-color: #E2A68C; /* Warm Peach/Salmon */
    --text-main: #1A1A1A;
    --text-light: #4A4A4A;
    --transition: all 0.8s cubic-bezier(0.19, 1, 0.22, 1);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: "Segoe UI", "Microsoft YaHei", "微软雅黑", -apple-system, BlinkMacSystemFont, Arial, sans-serif;
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    scroll-behavior: smooth;
}

h1, h2, h3 {
    font-family: Constantia, Georgia, serif;
    font-weight: 600;
}

/* --- Navigation --- */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 2.5rem 0;
    display: flex;
    justify-content: center;
    z-index: 1000;
    transition: var(--transition);
}

nav.scrolled {
    padding: 1.2rem 5%;
    background: rgba(250, 249, 246, 0.95);
    border-bottom: 3px solid var(--accent-color);
    backdrop-filter: blur(15px);
}

.nav-container {
    width: 90%;
    max-width: 1400px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-left {
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    text-decoration: none !important;
}

.logo-img {
    height: 60px;
    width: auto;
    transition: var(--transition);
}

nav.scrolled .logo-img {
    height: 45px;
}

.logo-text {
    font-size: 1.1rem;
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: 3px;
    text-transform: uppercase;
    transition: var(--transition);
    white-space: nowrap;
    text-decoration: none !important;
}

nav.scrolled .logo-text {
    font-size: 0.9rem;
    letter-spacing: 2px;
    color: var(--primary-color);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.nav-links {
    display: flex;
    gap: 3.5rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: var(--transition);
    position: relative;
    font-weight: 500;
}

nav.scrolled .nav-links a {
    color: var(--primary-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-color);
    transition: var(--transition);
}

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

.lang-switcher {
    display: flex;
    gap: 1.2rem;
}

.lang-btn {
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.8rem;
    color: #fff;
    opacity: 0.7;
}

nav.scrolled .lang-btn {
    color: var(--text-light);
}

.lang-btn:hover {
    opacity: 1;
    color: #fff;
}

nav.scrolled .lang-btn:hover {
    color: var(--primary-color);
}

.lang-btn.active {
    opacity: 1;
    font-weight: 700;
    color: #fff;
}

nav.scrolled .lang-btn.active {
    color: var(--primary-color);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: #fff;
    transition: var(--transition);
}

nav.scrolled .menu-toggle span {
    background: var(--primary-color);
}

.nav-active .menu-toggle span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.nav-active .menu-toggle span:nth-child(2) {
    opacity: 0;
}

.nav-active .menu-toggle span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* --- Hero Section --- */
.hero {
    height: 100vh;
    width: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.1)), 
                      url('https://images.unsplash.com/photo-1470071459604-3b5ec3a7fe05?auto=format&fit=crop&q=90&w=2400'); 
    background-size: cover;
    background-position: center;
    transform: scale(1.1);
    transition: transform 12s ease-out;
}

.hero.active .hero-bg {
    transform: scale(1);
}

.hero-content {
    position: relative;
    z-index: 10;
    width: 90%; 
    max-width: 1400px;
    padding: 0 2rem;
    color: white;
}

.hero-content h1 {
    font-size: clamp(2.2rem, 6.5vw, 5rem);
    margin-bottom: 2.5rem;
    opacity: 0;
    line-height: 1.15;
    transform: translateY(40px);
    transition: var(--transition);
    transition-delay: 0.3s;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.2rem;
    letter-spacing: 6px;
    text-transform: uppercase;
    margin-bottom: 3.5rem;
    opacity: 0;
    transform: translateY(40px);
    transition: var(--transition);
    transition-delay: 0.5s;
    font-weight: 600;
    color: var(--accent-color);
}

.hero.active .hero-content h1,
.hero.active .hero-content p {
    opacity: 1;
    transform: translateY(0);
}

/* --- Sections --- */
section {
    padding: 12rem 10%;
}

#philosophy {
    position: relative;
    background-image: linear-gradient(rgba(250, 249, 246, 0.9), rgba(250, 249, 246, 0.9)),
                      url('https://images.unsplash.com/photo-1540339832862-47459980783f?auto=format&fit=crop&q=80&w=2000'); 
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
}

.section-head {
    text-align: center;
    margin-bottom: 7rem;
}

.section-head span {
    display: block;
    font-size: 0.9rem;
    color: var(--accent-color);
    letter-spacing: 5px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.section-head h2 {
    font-size: clamp(2.5rem, 5vw, 3.8rem);
    color: var(--primary-color);
    line-height: 1.2;
}

/* --- Services --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3.5rem;
}

.service-card {
    position: relative;
    overflow: hidden;
    min-height: 600px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 4.5rem;
    transition: var(--transition);
    border-radius: 4px;
}

.service-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    transition: transform 1.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.service-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.service-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(6, 78, 59, 0) 20%, rgba(6, 78, 59, 0.85) 90%);
}

.service-card.wide::after {
    background: linear-gradient(to right, rgba(6, 78, 59, 0.9) 0%, rgba(6, 78, 59, 0.7) 40%, transparent 100%);
}

.service-info {
    position: relative;
    z-index: 10;
    color: white;
}

.service-info h3 {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    color: #fff;
}

.service-info p {
    font-size: 1.05rem;
    opacity: 0.95;
    max-width: 95%;
    line-height: 1.7;
    font-weight: 300;
}

.service-card:hover .service-img {
    transform: scale(1.1);
}

.service-card.wide {
    grid-column: span 2;
    min-height: 500px;
}

/* --- Membership --- */
.cta-btn {
    display: inline-block;
    padding: 1.3rem 3.5rem;
    border: 1px solid var(--accent-color);
    text-decoration: none;
    color: var(--accent-color);
    letter-spacing: 4px;
    font-size: 0.95rem;
    text-transform: uppercase;
    transition: var(--transition);
    background: transparent;
    font-weight: 700;
}

.cta-btn:hover {
    background: var(--accent-color);
    color: white;
}

/* --- Animations --- */
.reveal {
    opacity: 0;
    transform: translateY(60px);
    transition: all 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

footer {
    padding: 5rem 10%;
    text-align: center;
    background: #fff;
}

/* --- Responsive 1024px --- */
@media (max-width: 1024px) {
    nav {
        padding: 1.5rem 0;
    }
    .nav-container {
        width: 92%;
    }
    .nav-right {
        gap: 1rem;
    }
    
    .logo-text {
        font-size: 0.85rem;
        display: block !important;
        color: #fff;
        margin-left: 0.5rem;
    }
    
    nav.scrolled .logo-text {
        color: var(--primary-color);
    }

    .lang-switcher {
        position: static !important;
        display: flex !important;
        gap: 0.8rem;
    }
    
    .lang-btn {
        font-size: 0.75rem;
        color: #fff !important;
    }
    
    nav.scrolled .lang-btn {
        color: var(--primary-color) !important;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        right: -100%;
        top: 0;
        height: 100vh;
        width: 80%;
        max-width: 300px;
        background: #fff;
        flex-direction: column;
        justify-content: center;
        align-items: flex-start;
        padding-left: 15%;
        gap: 2.2rem;
        transition: 0.4s ease;
        box-shadow: -10px 0 50px rgba(0,0,0,0.1);
        z-index: 999;
    }

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

    .nav-links a {
        color: var(--primary-color) !important;
        font-size: 1.2rem;
    }

    .hero-content h1 {
        font-size: 3rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    .service-card.wide {
        grid-column: span 1;
    }
    section {
        padding: 8rem 8%;
    }
}

/* --- Responsive 600px --- */
@media (max-width: 600px) {
    .logo-text {
        font-size: 0.7rem;
        max-width: 85px;
        white-space: normal;
        line-height: 1.1;
    }
    .hero-content {
        padding-top: 4rem;
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .hero-content h1 {
        font-size: 2.22rem;
        line-height: 1.2;
    }
    .hero-content .cta-btn {
        margin: 0 auto;
        padding: 1.1rem 2.5rem;
    }
    .service-card {
        min-height: 400px;
        padding: 2.5rem;
    }
    .service-info h3 {
        font-size: 1.8rem;
    }
}