:root {
    --bg: #F2F0ED;          /* 灰白石材色 */
    --text-main: #353535;   /* 深碳灰 */
    --text-light: #707070;  /* 煙灰 */
    --accent: #B5A48B;      /* 霧面金 */
    --white: #FFFFFF;
    --font-serif: 'Cormorant Garamond', 'Noto Serif TC', serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--font-serif);
    background-color: var(--bg);
    color: var(--text-main);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}

/* --- Animations --- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Hamburger menu */
.menu-trigger {
    position: fixed;
    top: 2.5rem;
    right: 2rem;
    z-index: 1000;
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 6px;

    padding-top: 5px;
    display: none;
}
.hamburger-line {
    width: 24px;
    height: 3px;
    margin-bottom: 6px;
    background: var(--bg);
}


.container { margin: 0 auto; padding: 0 6%; max-width: 1400px; }
section { padding: 120px 0; }

/* --- Header & Nav --- */
header {
    position: fixed; top: 0; width: 100%; z-index: 1000;
    padding: 30px 0; transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-inner {
    display: flex; justify-content: flex-end; align-items: center;
    padding: 0 6%;
}

.logo { 
    position: fixed; 
    width: 140px;
    height: auto; 
    top: 50px; left: 6%;
    transition: 0.5s; 
    z-index: 9999; 
    filter: invert(1);
    mix-blend-mode: difference;
}

.nav-links { 
    display: flex; gap: 40px; list-style: none; 
    text-transform: uppercase; font-size: 0.85rem; letter-spacing: 2px; 
}

.nav-links li { 
    cursor: pointer; color: white; font-size: 16px; font-weight: 800; transition: 0.3s;
    mix-blend-mode: difference; margin: 0 20px;
}
.nav-links li:hover { color: var(--accent); }