/*云南红河银饰批发 - 银色+蓝色主题 | 精致手工艺风格 */

:root {
    /* 银色系 */
    --silver-light: #e8e8e8;
    --silver: #c0c0c0;
    --silver-dark: #a0a0a0;
    --silver-deep: #707070;
    /* 蓝色系 */
    --blue-light: #4a90d9;
    --blue: #1e5799;
    --blue-dark: #0d3a6e;
    --blue-deep: #082850;
    /* 背景与文字 */
    --bg-light: #f5f7fa;
    --bg-white: #ffffff;
    --text-dark: #2c2c2c;
    --text-gray: #666666;
}

/* 重置与基础 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    color: var(--text-dark);
    background: var(--bg-light);
    line-height: 1.8;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部 - 精致银饰感 */
.hero {
    background: linear-gradient(135deg, var(--blue-deep) 0%, var(--blue-dark) 40%, var(--blue) 100%);
    color: var(--silver-light);
    padding: 80px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(192,192,192,0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 30%, rgba(192,192,192,0.1) 0%, transparent 40%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 300;
    letter-spacing: 0.3em;
    margin-bottom: 16px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.hero .subtitle {
    font-size: 1.1rem;
    letter-spacing: 0.2em;
    color: var(--silver);
    margin-bottom: 12px;
}

.hero .tagline {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.8);
    font-weight: 300;
}

/* 导航 */
.nav {
    background: var(--bg-white);
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.nav-list {
    display: flex;
    justify-content: center;
    list-style: none;
    gap: 40px;
}

.nav-list a {
    display: block;
    padding: 18px 0;
    color: var(--blue-dark);
    text-decoration: none;
    font-size: 0.95rem;
    letter-spacing: 0.1em;
    transition: color 0.3s;
    position: relative;
}

.nav-list a::after {
    content: "";
    position: absolute;
    bottom: 14px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--blue-light);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.nav-list a:hover {
    color: var(--blue-light);
}

.nav-list a:hover::after {
    transform: scaleX(1);
}

/* 通用区块 */
.section {
    padding: 70px 0;
}

.section-title {
    text-align: center;
    font-size: 1.8rem;
    font-weight: 400;
    color: var(--blue-dark);
    letter-spacing: 0.15em;
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: "";
    display: block;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--silver), var(--blue-light));
    margin: 16px auto 0;
}

/* 产品展示 */
.products {
    background: var(--bg-white);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--bg-light);
    border-radius: 8px;
    padding: 30px 20px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--silver-light);
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(30,87,153,0.12);
}

.product-img {
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--silver-light), var(--silver), var(--silver-dark));
    box-shadow:
        0 4px 16px rgba(0,0,0,0.1),
        inset 0 2px 4px rgba(255,255,255,0.8);
}

.product-card h3 {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--blue-dark);
    margin-bottom: 8px;
    letter-spacing: 0.1em;
}

.product-card .price {
    font-size: 1.2rem;
    color: var(--blue);
    font-weight: 600;
    margin-bottom: 10px;
}

.product-card .desc {
    font-size: 0.85rem;
    color: var(--text-gray);
}

/* 关于我们 */
.about {
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-white) 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text p {
    color: var(--text-gray);
    margin-bottom: 24px;
    font-size: 0.95rem;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 10px 0;
    color: var(--blue-dark);
    font-size: 0.95rem;
}

.craftsmanship {
    width: 100%;
    height: 280px;
    background: linear-gradient(135deg, var(--silver-light), var(--silver), var(--blue-light));
    border-radius: 8px;
    box-shadow:
        0 8px 32px rgba(30,87,153,0.15),
        inset 0 2px 8px rgba(255,255,255,0.5);
}

/* 联系方式 */
.contact {
    background: var(--blue-deep);
    color: var(--silver-light);
}

.contact .section-title {
    color: var(--silver-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.contact-item {
    text-align: center;
    padding: 30px 20px;
    border: 1px solid rgba(192,192,192,0.2);
    border-radius: 8px;
    transition: background 0.3s;
}

.contact-item:hover {
    background: rgba(255,255,255,0.05);
}

.contact-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 16px;
}

.contact-item h3 {
    font-size: 0.9rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    color: var(--silver);
    margin-bottom: 10px;
}

.contact-item p {
    font-size: 1rem;
    color: var(--silver-light);
}

/* 页脚 */
.footer {
    background: var(--blue-deep);
    border-top: 1px solid rgba(192,192,192,0.15);
    padding: 30px 0;
    text-align: center;
}

.footer p {
    font-size: 0.85rem;
    color: rgba(192,192,192,0.6);
    letter-spacing: 0.1em;
}

/* 响应式 */
@media (max-width: 768px) {
    .hero {
        padding: 60px 20px;
    }

    .nav-list {
        gap: 20px;
        flex-wrap: wrap;
    }

    .nav-list a {
        padding: 14px 0;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .about-img {
        order: -1;
    }

    .section {
        padding: 50px 0;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        letter-spacing: 0.15em;
    }

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

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