/* 全局设定：暖调呼吸背景 */
body {
    margin: 0;
    padding: 0;
    font-family: "Optima", "Candara", "Noto Sans SC", sans-serif;
    background: linear-gradient(-45deg, #fffaf2, #fff5e6, #fdf2f4, #fafaf0);
    background-size: 400% 400%;
    animation: gradientBG 18s ease infinite;
    color: #4a4a4a;
    min-height: 100vh;
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 全局顶部导航 */
.global-nav {
    position: fixed;
    top: 0; left: 0; width: 100%;
    padding: 25px 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    z-index: 9999;
    box-sizing: border-box;
    border-bottom: 0.5px solid rgba(188, 170, 164, 0.1);
}

.nav-logo a {
    text-decoration: none;
    color: #333;
    font-size: 1.1rem;
    letter-spacing: 0.3em;
    font-weight: 200;
}

.nav-links {
    display: flex;
    gap: 40px;
    list-style: none;
    margin: 0; padding: 0;
}

.nav-links a {
    text-decoration: none;
    color: #666;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    transition: 0.3s;
}

.nav-links a:hover { color: #e5989b; }

/* 首页特有布局 */
.hero-wrapper {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
}

.main-logo {
    font-size: 5rem;
    font-weight: 100;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    margin: 0;
}

.center-statement {
    margin-top: 1.2rem;
    letter-spacing: 0.7em;
    font-size: 0.75rem;
    color: #bcaaa4;
}

/* 底部大导航 */
.footer-nav {
    position: absolute;
    bottom: 8vh;
    width: 85%;
    max-width: 1100px;
}

.nav-groups {
    display: flex;
    justify-content: space-between;
    list-style: none;
    padding: 35px 0;
    border-top: 0.5px solid rgba(188, 170, 164, 0.4);
}

.group-label {
    display: block;
    font-size: 0.65rem;
    color: #bcaaa4;
    margin-bottom: 20px;
    letter-spacing: 0.25em;
    text-transform: uppercase;
}

.sub-menu a {
    display: block;
    text-decoration: none;
    color: #5d5d5d;
    font-size: 0.95rem; /* 增强易读性 */
    font-weight: 300;
    margin-bottom: 12px; /* 增加行距，更疏朗 */
    transition: all 0.4s ease;
}

.sub-menu a:hover {
    color: #e5989b;
    transform: translateX(3px);
}