/* ===== 全局重置 & 变量 ===== */
:root {
    --primary: #b8860b;
    --primary-dark: #8b6508;
    --primary-light: #d4a843;
    --accent: #c0392b;
    --bg-cream: #faf7f0;
    --bg-warm: #f5efe2;
    --text-dark: #2c1810;
    --text-muted: #6b5a48;
    --card-shadow: 0 12px 28px rgba(0,0,0,0.06);
    --radius: 20px;
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Serif SC', 'PingFang SC', system-ui, -apple-system, sans-serif;
    background: var(--bg-cream);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

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

.section-tag {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    padding: 4px 18px;
    border-radius: 30px;
    font-size: 0.8rem;
    letter-spacing: 2px;
    margin-bottom: 12px;
    font-weight: 600;
}

.section-header h2 {
    font-size: 2.4rem;
    font-weight: 900;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.05rem;
}

.section-header.light h2,
.section-header.light p { color: #fff; }

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 60px;
    font-weight: 700;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: 0 8px 20px rgba(184, 134, 11, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(184, 134, 11, 0.45);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255,255,255,0.7);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.15);
    border-color: #fff;
}

.btn-block { width: 100%; justify-content: center; }

/* ===== 导航 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(250, 247, 240, 0.92);
    backdrop-filter: blur(12px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.06);
    padding: 10px 0;
}

.navbar.scrolled .logo,
.navbar.scrolled .nav-menu a { color: var(--text-dark); }

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.7rem;
    font-weight: 900;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo i { color: var(--primary-light); }

.nav-menu {
    display: flex;
    gap: 28px;
}

.nav-menu a {
    color: rgba(255,255,255,0.85);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 6px 0;
    position: relative;
    transition: var(--transition);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-light);
    transition: var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a.active::after { width: 100%; }

.nav-menu a:hover { color: var(--primary-light); }

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: #fff;
    border-radius: 4px;
    transition: var(--transition);
}

.navbar.scrolled .hamburger span { background: var(--text-dark); }

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(145deg, #1a0e0a, #2c1810, #3d2618);
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 40%, rgba(184,134,11,0.15), transparent 70%);
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    padding: 120px 0 60px;
}

.hero-text .hero-badge {
    display: inline-block;
    background: rgba(184,134,11,0.2);
    border: 1px solid rgba(184,134,11,0.3);
    color: var(--primary-light);
    padding: 6px 20px;
    border-radius: 30px;
    font-size: 0.85rem;
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.hero-text h1 {
    font-size: 3.2rem;
    font-weight: 900;
    line-height: 1.2;
    color: #fff;
    margin-bottom: 16px;
}

.hero-text p {
    font-size: 1.15rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: 32px;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-image img {
    width: 100%;
    max-width: 420px;
    margin-left: auto;
    border-radius: 30px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.5);
    transform: rotate(2deg);
    transition: var(--transition);
}

.hero-image img:hover { transform: rotate(0deg) scale(1.02); }

.wave-shape {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    line-height: 0;
}

.wave-shape svg { fill: var(--bg-cream); }

/* ===== 品牌 ===== */
.brand-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 28px;
}

.brand-card {
    background: #fff;
    padding: 36px 24px;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    border: 1px solid rgba(184,134,11,0.08);
}

.brand-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.brand-card i {
    font-size: 2.8rem;
    color: var(--primary);
    margin-bottom: 18px;
}

.brand-card h3 { margin-bottom: 10px; font-weight: 700; }
.brand-card p { color: var(--text-muted); font-size: 0.95rem; }

/* ===== 产品 ===== */
.products {
    background: linear-gradient(135deg, #2c1810, #3d2618, #2c1810);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 28px;
}

.product-card {
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    color: #fff;
    transition: var(--transition);
}

.product-card:hover {
    background: rgba(255,255,255,0.12);
    transform: translateY(-6px);
    border-color: var(--primary-light);
}

.product-card .product-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.product-card h3 { font-size: 1.25rem; margin-bottom: 6px; }
.product-card .price {
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--primary-light);
    margin: 12px 0;
}

.product-card .desc { font-size: 0.9rem; opacity: 0.75; margin-bottom: 18px; }

/* ===== 加盟优势 ===== */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.adv-item {
    background: #fff;
    padding: 30px 20px;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.adv-item:hover { transform: scale(1.02); }

.adv-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: #fff;
    font-size: 1.6rem;
}

.adv-item h4 { margin-bottom: 8px; font-weight: 700; }
.adv-item p { color: var(--text-muted); font-size: 0.9rem; }

/* ===== 流程 ===== */
.process-steps {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.step {
    background: #fff;
    padding: 32px 24px;
    border-radius: var(--radius);
    text-align: center;
    flex: 1 1 180px;
    max-width: 240px;
    box-shadow: var(--card-shadow);
    position: relative;
}

.step-num {
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 900;
    margin: 0 auto 16px;
}

.step h4 { margin-bottom: 6px; }
.step p { color: var(--text-muted); font-size: 0.9rem; }

/* ===== 统计 ===== */
.stats {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    padding: 60px 0;
    color: #fff;
}

.stats-grid {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 30px;
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    display: block;
    line-height: 1;
}

.stat-label { font-size: 1rem; opacity: 0.85; }

/* ===== 联系 ===== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: start;
    background: #fff;
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--card-shadow);
}

.contact-form .form-group {
    margin-bottom: 20px;
}

.contact-form label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: var(--text-dark);
}

.contact-form label i { color: var(--primary); margin-right: 6px; }

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #ddd;
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--bg-cream);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(184,134,11,0.15);
}

.form-tip { font-size: 0.8rem; color: var(--text-muted); margin-top: 12px; text-align: center; }

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding-top: 10px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 18px;
}

.info-item i {
    font-size: 2rem;
    color: var(--primary);
    width: 48px;
    text-align: center;
}

.info-item h4 { font-weight: 700; margin-bottom: 2px; }
.info-item p { color: var(--text-muted); }

/* ===== 底部 ===== */
.footer {
    background: #1a0e0a;
    color: rgba(255,255,255,0.7);
    padding: 30px 0;
    text-align: center;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-brand i { color: var(--primary-light); margin-right: 6px; }
.footer-links a { margin: 0 10px; color: rgba(255,255,255,0.6); transition: var(--transition); }
.footer-links a:hover { color: var(--primary-light); }

/* 回到顶部 */
.back-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(184,134,11,0.3);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 99;
}

.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--primary-dark); transform: scale(1.08); }

/* ===== 响应式 ===== */
@media (max-width: 992px) {
    .hero-content { grid-template-columns: 1fr; text-align: center; }
    .hero-image img { margin: 0 auto; }
    .hero-actions { justify-content: center; }
    .contact-wrapper { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(44, 24, 16, 0.98);
        backdrop-filter: blur(16px);
        flex-direction: column;
        padding: 80px 30px 30px;
        gap: 16px;
        transition: var(--transition);
        box-shadow: -10px 0 30px rgba(0,0,0,0.3);
    }
    .nav-menu.active { right: 0; }
    .nav-menu a { color: #fff; font-size: 1.1rem; }
    .hamburger { display: flex; }
    .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(6px,6px); }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(6px,-6px); }

    .hero-text h1 { font-size: 2.2rem; }
    .section-header h2 { font-size: 1.8rem; }
    .contact-wrapper { padding: 24px; }
    .stats-grid { gap: 20px; }
    .stat-number { font-size: 2.2rem; }
}

@media (max-width: 480px) {
    .hero-text h1 { font-size: 1.8rem; }
    .btn { padding: 12px 24px; font-size: 0.9rem; }
    .brand-grid, .advantage-grid { grid-template-columns: 1fr; }
}
```

```javascript