/* ==================== 基础样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --black: #0a0a0a;
    --dark: #1a1a1a;
    --gold: #c9a96e;
    --gold-light: #e8d5b0;
    --gray: #888;
    --light-gray: #f5f5f5;
    --white: #ffffff;
    --font-main: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

body {
    font-family: var(--font-main);
    color: #333;
    line-height: 1.8;
    background: var(--white);
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 32px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 48px;
    color: var(--black);
}

.gray-bg {
    background: var(--light-gray);
}

/* ==================== 导航栏 ==================== */
.navbar {
    background: var(--black);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0 24px;
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    font-size: 22px;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 2px;
}

.logo span {
    color: var(--gold);
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    color: #ccc;
    font-size: 15px;
    transition: color 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--gold);
}

/* ==================== 首页横幅 ==================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    background: var(--black);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(201,169,110,0.15) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 50%, rgba(201,169,110,0.08) 0%, transparent 60%);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.6) 100%);
}

.hero-content {
    position: relative;
    text-align: center;
    color: var(--white);
    padding: 0 24px;
}

.hero-sub {
    font-size: 14px;
    letter-spacing: 6px;
    color: var(--gold);
    margin-bottom: 20px;
    text-transform: uppercase;
}

.hero-content h1 {
    font-size: 72px;
    font-weight: 700;
    letter-spacing: 8px;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #fff 0%, var(--gold-light) 50%, var(--gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 18px;
    color: #ccc;
    margin-bottom: 40px;
    letter-spacing: 2px;
}

.hero-tags {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-tags span {
    background: rgba(201,169,110,0.15);
    border: 1px solid rgba(201,169,110,0.4);
    color: var(--gold-light);
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 14px;
    letter-spacing: 1px;
}

/* ==================== 品牌承诺 ==================== */
.promise-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.promise-card {
    text-align: center;
    padding: 40px 24px;
    border: 1px solid #eee;
    border-radius: 12px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.promise-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

.promise-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.promise-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--black);
}

.promise-card p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.8;
}

/* ==================== 主营品类 ==================== */
.category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.category-item {
    text-align: center;
    padding: 48px 24px;
    background: var(--black);
    color: var(--white);
    border-radius: 12px;
    transition: transform 0.3s;
}

.category-item:hover {
    transform: translateY(-4px);
}

.category-img {
    font-size: 56px;
    margin-bottom: 20px;
}

.category-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--gold);
}

.category-item p {
    font-size: 14px;
    color: #aaa;
    line-height: 1.8;
}

/* ==================== 品牌故事 ==================== */
.brand-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.brand-text p {
    font-size: 16px;
    color: #555;
    margin-bottom: 20px;
    line-height: 2;
}

.brand-img-placeholder,
.about-img-placeholder {
    width: 100%;
    height: 400px;
    background: var(--dark);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold);
    font-size: 28px;
    letter-spacing: 4px;
}

/* ==================== 关于我们页面 ==================== */
.page-hero {
    position: relative;
    height: 360px;
    background: var(--black);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 50%, rgba(201,169,110,0.12) 0%, transparent 70%);
}

.page-hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.55);
}

.page-hero-content {
    position: relative;
    text-align: center;
    color: var(--white);
}

.page-hero-content h1 {
    font-size: 48px;
    font-weight: 700;
    letter-spacing: 6px;
}

.about-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text h2 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--black);
}

.about-text p {
    font-size: 16px;
    color: #555;
    line-height: 2;
    margin-bottom: 16px;
}

.about-img-placeholder {
    height: 360px;
}

/* 优势 */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.advantage-item {
    padding: 36px 24px;
    background: var(--white);
    border-radius: 12px;
    border: 1px solid #eee;
}

.advantage-num {
    font-size: 48px;
    font-weight: 700;
    color: var(--gold);
    opacity: 0.6;
    display: block;
    margin-bottom: 16px;
}

.advantage-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--black);
}

.advantage-item p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.8;
}

/* ==================== 联系我们 ==================== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.contact-card {
    padding: 48px 36px;
    background: var(--white);
    border: 1px solid #eee;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

.contact-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.contact-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--black);
}

.contact-card p {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.8;
}

.contact-card strong {
    color: var(--black);
}

/* ==================== 底部 ==================== */
.footer {
    background: var(--black);
    color: #aaa;
    padding: 60px 0 0;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 48px;
    border-bottom: 1px solid #2a2a2a;
}

.footer-brand h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
}

.footer-brand h3 span {
    color: var(--gold);
}

.footer-brand p,
.footer-contact p {
    font-size: 14px;
    color: #777;
    line-height: 2;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: #999;
    font-size: 15px;
    transition: color 0.3s;
}

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

.footer-contact h4 {
    font-size: 15px;
    color: #999;
    margin-bottom: 12px;
}

.footer-bottom {
    text-align: center;
    padding: 24px 0;
    font-size: 13px;
    color: #555;
}

/* ==================== 响应式 ==================== */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 42px;
    }

    .promise-grid,
    .category-grid,
    .advantage-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .brand-inner,
    .about-section {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .footer-top {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .nav-links {
        gap: 20px;
    }

    .nav-links a {
        font-size: 13px;
    }

    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 26px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 32px;
        letter-spacing: 4px;
    }

    .promise-grid,
    .category-grid,
    .advantage-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .hero-tags {
        flex-direction: column;
        align-items: center;
    }
}