/* 深邃奢华风 - 变量设定 */
:root {
    --bg-obsidian: #edf1f8;
    /* 浅蓝灰底 */
    --bg-surface: #f5f8ff;
    /* 微蓝白表面 */
    --bg-surface-elevated: #dce6f5;
    /* 悬停抬升层 */
    --bg-navy: #0A192F;
    /* 深海军蓝（参考index1） */
    --text-pure: #0A192F;
    /* 深海军蓝文字 */
    --text-light: #FFFFFF;
    /* 纯白（用于深色背景） */
    --text-muted: #3d5070;
    /* 深调副文本 */
    --text-muted-light: #a8b8cc;
    /* 浅色背景上的副文本 */
    --accent-gold: #C5A059;
    /* 香槟金（与index1一致） */
    --border-dark: rgba(10, 25, 47, 0.14);
    --font-serif: "Playfair Display", "Noto Serif SC", "Songti SC", serif;
    --font-sans: "Helvetica Neue", "PingFang SC", sans-serif;
}

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

body {
    font-family: var(--font-sans);
    color: var(--text-pure);
    background-color: var(--bg-obsidian);
    background-image:
        radial-gradient(circle at 14% 10%, rgba(10, 40, 100, 0.06), transparent 42%),
        radial-gradient(circle at 86% 6%, rgba(10, 40, 100, 0.04), transparent 38%),
        radial-gradient(circle at 50% 120%, rgba(10, 40, 100, 0.08), transparent 55%),
        linear-gradient(180deg, #e8eef8 0%, #edf1f8 42%, #e8eef8 100%);
    background-attachment: fixed;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* 渐显动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-up {
    animation: fadeIn 1.5s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

/* 极简顶导 */
header {
    padding: 30px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    background: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(197, 160, 89, 0.15);
    box-shadow: 0 4px 24px rgba(10, 25, 47, 0.25);
}

.logo {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 400;
    letter-spacing: 4px;
    color: var(--accent-gold);
    text-decoration: none;
    text-transform: uppercase;
}

nav a {
    color: var(--text-light);
    text-decoration: none;
    margin-left: 40px;
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: color 0.4s;
    opacity: 0.78;
}

nav a:hover {
    color: var(--accent-gold);
    opacity: 1;
}

/* 英文修饰小标题 */
.subtitle-en {
    font-size: 10px;
    letter-spacing: 6px;
    color: var(--accent-gold);
    text-transform: uppercase;
    margin-bottom: 20px;
    display: block;
}

/* 第一屏：电影感主视觉 */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background:
        linear-gradient(to bottom, rgba(10, 25, 47, 0.55), rgba(10, 25, 47, 0.80), rgba(10, 25, 47, 0.92)),
        radial-gradient(circle at 50% 22%, rgba(197, 160, 89, 0.12), transparent 60%),
        url('../assets/images/glass-revolving-door-hotel-lobby.jpg') center/cover;
    padding: 0 5%;
}

.hero h1 {
    font-family: var(--font-serif);
    font-size: 56px;
    font-weight: 300;
    line-height: 1.3;
    margin-bottom: 30px;
    letter-spacing: 4px;
    color: var(--text-light);
}

.hero p {
    font-size: 15px;
    color: var(--text-muted-light);
    max-width: 600px;
    margin-bottom: 50px;
    font-weight: 300;
    letter-spacing: 1px;
    text-shadow: 0 1px 6px rgba(0, 0, 0, 0.30);
}

.btn-gold-line {
    display: inline-block;
    padding: 16px 45px;
    border: 1px solid rgba(197, 160, 89, 0.6);
    color: var(--accent-gold);
    text-decoration: none;
    font-size: 12px;
    letter-spacing: 3px;
    transition: all 0.5s ease;
    text-transform: uppercase;
    background: rgba(10, 25, 47, 0.30);
    box-shadow: 0 6px 20px rgba(10, 25, 47, 0.20);
}

.btn-gold-line:hover {
    border-color: var(--accent-gold);
    background: rgba(197, 160, 89, 0.10);
    box-shadow: 0 0 20px rgba(197, 160, 89, 0.18), 0 10px 28px rgba(10, 25, 47, 0.25);
}

/* 统一区块设置 */
section {
    padding: 150px 5%;
}

/* 第二屏：理念陈述 */
.statement {
    text-align: center;
    position: relative;
}

.statement::before {
    content: '';
    display: block;
    width: 1px;
    height: 100px;
    background: linear-gradient(to bottom, transparent, var(--accent-gold), transparent);
    margin: 0 auto 50px;
}

.statement h2 {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 300;
    color: var(--text-pure);
    margin-bottom: 50px;
    line-height: 1.8;
    letter-spacing: 2px;
}

.statement p {
    font-size: 15px;
    max-width: 800px;
    margin: 0 auto;
    color: var(--text-muted);
    font-weight: 300;
    text-align: justify;
    text-justify: inter-ideograph;
}

/* 第三屏：服务闭环 (暗金边框卡片) */
.services {
    background:
        linear-gradient(180deg, rgba(232, 238, 248, 0.98), rgba(225, 233, 245, 0.98));
    border-top: 1px solid var(--border-dark);
    border-bottom: 1px solid var(--border-dark);
}

.section-header {
    text-align: center;
    margin-bottom: 100px;
}

.section-header h3 {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 300;
    letter-spacing: 3px;
    color: var(--text-pure);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    /* 实现极细的网格线效果 */
    background-color: var(--border-dark);
    /* 线条颜色 */
    max-width: 1200px;
    margin: 0 auto;
    border: 1px solid var(--border-dark);
    box-shadow: 0 20px 60px rgba(100, 130, 190, 0.12);
}

.service-card {
    background-color: var(--bg-surface);
    padding: 80px 50px;
    text-align: center;
    transition: all 0.5s ease;
    position: relative;
    overflow: hidden;
}

.service-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-gold);
    transform: scaleX(0);
    transition: transform 0.5s ease;
    transform-origin: center;
}

.service-card:hover::after {
    transform: scaleX(1);
}

.service-card:hover {
    background-color: var(--bg-surface-elevated);
    box-shadow: inset 0 0 0 1px rgba(197, 160, 89, 0.12);
}

.service-img-wrapper {
    width: 100%;
    height: 180px;
    margin-bottom: 30px;
    overflow: hidden;
    position: relative;
    border-radius: 2px;
}

.service-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
    opacity: 0.9;
}

.service-card:hover .service-img-wrapper img {
    transform: scale(1.08);
    opacity: 1;
}

.service-num {
    font-family: var(--font-serif);
    font-size: 40px;
    color: rgba(10, 25, 47, 0.15);
    margin-bottom: 30px;
    transition: color 0.5s ease;
}

.service-card:hover .service-num {
    color: var(--accent-gold);
    opacity: 0.6;
}

.service-card h4 {
    font-size: 20px;
    font-weight: 400;
    margin-bottom: 20px;
    letter-spacing: 2px;
    color: var(--text-pure);
}

.service-card p {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 300;
    line-height: 2;
}

/* 第四屏：远景 */
.vision {
    padding: 150px 10%;
    text-align: center;
    background: var(--bg-navy);
}

.vision>.subtitle-en,
.vision>h3 {
    color: var(--text-light) !important;
}

.vision-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 60px;
    max-width: 1000px;
    margin: 80px auto 0;
    text-align: left;
}

.vision-item {
    position: relative;
    padding-left: 30px;
    border-top: 1px solid rgba(197, 160, 89, 0.25);
    padding-top: 20px;
}

.vision-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 28px;
    width: 6px;
    height: 6px;
    background: var(--accent-gold);
    border-radius: 50%;
    box-shadow: 0 0 12px rgba(197, 160, 89, 0.25);
}

.vision-item h5 {
    font-size: 18px;
    font-weight: 400;
    color: var(--accent-gold);
    margin-bottom: 15px;
    letter-spacing: 1px;
}

.vision-item p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
    font-weight: 300;
}

/* 第五屏：核心理念升华 */
.philosophy-closing {
    padding: 200px 5%;
    text-align: center;
    background:
        radial-gradient(circle at 50% 25%, rgba(197, 160, 89, 0.08) 0%, transparent 46%),
        radial-gradient(circle at center, #0d2040 0%, #0A192F 70%);
}

.philosophy-closing blockquote {
    font-family: var(--font-serif);
    font-size: 32px;
    line-height: 1.8;
    color: var(--accent-gold);
    max-width: 900px;
    margin: 0 auto;
    font-weight: 300;
    letter-spacing: 3px;
    text-shadow: 0 0 26px rgba(197, 160, 89, 0.18), 0 0 60px rgba(10, 25, 47, 0.30);
}

/* 页脚 */
footer {
    padding: 60px 10% 40px;
    text-align: center;
    border-top: 1px solid rgba(197, 160, 89, 0.15);
    background: linear-gradient(180deg, #0A192F, #050d1a);
}

.footer-logo {
    font-family: var(--font-serif);
    font-size: 18px;
    color: var(--accent-gold);
    margin-bottom: 20px;
    letter-spacing: 4px;
    text-transform: uppercase;
}

.footer-info {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 40px;
    letter-spacing: 1px;
}

.footer-bottom {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.3);
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* 导航与语言下拉菜单 */
.nav-dropdown,
.lang-switcher {
    position: relative;
    display: inline-block;
    vertical-align: middle;
    margin-left: 40px;
}

/* 触发按钮作为定位容器，使 left:50% 相对按钮文字宽度居中 */
nav .nav-item-dropdown {
    position: relative;
    display: inline-block;
    margin-left: 0;
    margin-right: -2px;
    /* 补偿 letter-spacing:2px 在末尾多出的空白 */
}

.lang-switcher .current-lang {
    position: relative;
    display: inline-block;
}

.current-lang {
    color: var(--text-light);
    font-size: 12px;
    letter-spacing: 2px;
    cursor: pointer;
    transition: color 0.4s;
    opacity: 0.78;
}

.current-lang:hover {
    color: var(--accent-gold);
    opacity: 1;
}

.nav-dropdown-content,
.lang-options {
    display: none;
    position: absolute;
    top: calc(100% + 25px);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(197, 160, 89, 0.15);
    padding: 10px 0;
    min-width: 140px;
    text-align: center;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    z-index: 200;
    white-space: nowrap;
}

/* 在下拉菜单顶部添加透明桥接伪元素，完美防止 hover 空隙丢失 */
.nav-dropdown-content::before,
.lang-options::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 0;
    width: 100%;
    height: 30px;
    background: transparent;
}

/* 触发展开下拉菜单 */
.nav-dropdown:hover .nav-dropdown-content,
.lang-switcher:hover .lang-options {
    display: block;
    animation: dropdownFadeIn 0.3s ease forwards;
}

/* 下拉专用动画，保留 translateX(-50%) 居中偏移 */
@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* 下拉项统一样式 */
nav .nav-dropdown-content a,
nav .lang-options a {
    display: block;
    margin-left: 0;
    padding: 12px 20px;
    text-transform: none;
    font-size: 13px;
    opacity: 0.78;
    white-space: nowrap;
    transition: all 0.3s;
}

nav .nav-dropdown-content a:hover,
nav .lang-options a:hover,
nav .lang-options a.active {
    opacity: 1;
    color: var(--accent-gold);
    background: rgba(197, 160, 89, 0.05);
}

/* 响应式适配 */
@media (max-width: 900px) {
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1px;
    }

    .service-card {
        padding: 50px 30px;
    }

    .vision-grid {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 38px;
    }

    .philosophy-closing blockquote {
        font-size: 22px;
    }
}

/* ---------------- Form Styles ---------------- */
.contact-section {
    padding: 100px 5%;
    background-color: var(--bg-surface);
}

.contact-container {
    max-width: 800px;
    margin: 0 auto;
    background: #fff;
    padding: 60px;
    border-top: 2px solid var(--accent-gold);
    box-shadow: 0 15px 40px rgba(10, 25, 47, 0.08);
}

.contact-header {
    text-align: center;
    margin-bottom: 50px;
}

.contact-header h2 {
    font-family: var(--font-serif);
    font-size: 28px;
    color: var(--text-pure);
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.contact-header p {
    font-size: 14px;
    color: var(--text-muted);
}

.form-group {
    margin-bottom: 25px;
}

.form-row {
    display: flex;
    gap: 30px;
}

.form-group.half {
    flex: 1;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-pure);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.form-group label .required {
    font-size: 10px;
    background: rgba(180, 50, 50, 0.1);
    color: #b43232;
    padding: 2px 6px;
    border-radius: 2px;
    margin-left: 8px;
    vertical-align: middle;
}

.form-group label .optional {
    font-size: 10px;
    background: rgba(10, 25, 47, 0.05);
    color: var(--text-muted);
    padding: 2px 6px;
    border-radius: 2px;
    margin-left: 8px;
    vertical-align: middle;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 18px;
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--text-pure);
    background: var(--bg-surface);
    border: 1px solid var(--border-dark);
    border-radius: 2px;
    transition: all 0.3s;
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted-light);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-gold);
    background: #fff;
    box-shadow: 0 4px 15px rgba(197, 160, 89, 0.08);
}

.form-submit {
    text-align: center;
    margin-top: 50px;
}

.btn-gold-solid {
    display: inline-block;
    padding: 18px 60px;
    background: var(--accent-gold);
    color: #fff;
    border: none;
    font-size: 13px;
    letter-spacing: 3px;
    transition: all 0.5s ease;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(197, 160, 89, 0.3);
}

.btn-gold-solid:hover {
    background: #b58d44;
    box-shadow: 0 10px 28px rgba(197, 160, 89, 0.4);
}

.btn-gold-solid:disabled {
    background: var(--text-muted-light);
    cursor: not-allowed;
    box-shadow: none;
}

@media (max-width: 768px) {
    .contact-container {
        padding: 40px 20px;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }
}